271results about How to "Improve oil recovery efficiency" patented technology

The invention relates to a novel oil shale dry distillation and oil refining method and a novel oil shale dry distillation and oil refining device. Firstly, the invention provides the oil shale dry distillation and oil refining method. In the method, oil shale particles with granularity less than 15mm are used as raw materials; and high temperature flue gas generated by burning semicoke and / or dry distillation gas is utilized to indirectly heat the oil shale particles so as to realize dry distillation of oil shale. The invention also provides the novel oil shale dry distillation and oil refining device for the oil shale dry distillation and oil refining method. Due to the adoption of the oil shale dry distillation and oil refining method and the oil shale dry distillation and oil refiningdevice, which are provided by the invention, high shale oil yield can be obtained, recycling of various products can also be realized, the burning utilization effect of the semicoke is high, and the utilization rate of the oil shale can reach 100 percent. The oil shale dry distillation and oil refining method and the oil shale dry distillation and oil refining device are not only beneficial for improving the economic benefits, but also are beneficial for protecting the environment.

The invention discloses a digital automatic oil extraction control system, which comprises a pressure sensor, a load sensor, a displacement sensor, a voltage sensor and a current sensor. The load sensor, the displacement sensor, a pressure sensor, the voltage sensor and the current sensor are all connected with an analog module of a programmable controller; the programmable controller is wirelessly connected with an upper computer; and the programmable controller controls an oil extractor motor through a transducer. The system also comprises an automatic counterweight imbalance adjusting mechanism arranged on a walking beam; the automatic counterweight imbalance adjusting mechanism comprises a movable counterweight block, a slide rail for supporting the movable counterweight block to move, and a motor playing a driving role for adjusting and balancing the counterweight block; and the programmable controller is connected with the motor for adjusting and balancing the counterweight block on an oil extractor. On the one hand, the system can conveniently finish oil extraction; and on the other hand, the system can judge the underground fault in time and change the counterweight condition so as to improve the oil extraction efficiency and achieve the energy-saving effect.

The invention relates to a subdivision water injection, ball-off and profile control integrated tubular column for a water injection well of an oilfield. A plurality of special water distributors for subdivision water injection, ball-off and profile control of the water injection well are serially connected to form the integrated tubular column, packers are arranged among the special water distributors, and a ball valve is disposed at the bottom end of the integrated tubular column; the special water distributors for subdivision water injection, ball-off and profile control of the water injection well comprise water distributor bodies, and a ball containing basket is hermetically sleeved on the outer side of each water distributor body along the axial direction of the water distributor body and corresponds to a water outlet of the water distributor body; each ball containing basket is in the shape of an annular barrel, the upper end of each ball containing basket is hermetically connected to the outer wall of the corresponding water distributor body while an annular opening at the lower end of each ball containing basket is hermetically closed by an annular baffle plate, and each annular baffle plate is connected with the lower end of the corresponding ball containing basket via a shear pin; an inner cavity of each ball containing basket is communicated with the water outlet of the corresponding water distributor body; and subdivision water injection, ball-off and profile control selective plugging balls are arranged in the ball containing baskets. The profile control balls are fed in a subdivision water injection section to plug shot holes so as to adjust uneven interlayer water absorption, a water injection effect is improved, and accordingly crude oil production yield and oil production efficiency are improved.

The invention provides a buoy-type weir oil recovery device which can be used for solving the problems that the traditional weir oil recovery device in the prior art has the disadvantages of poor stochastic volatility, poor oil recovery efficiency and the like. The buoy-type weir oil recovery device comprises an upper container and buoyancy compartment device, a lower container and buoyancy compartment device, a turbine device and a pump station system. The upper container and buoyancy compartment device is a container defined by a buoyancy material, wherein the container is mainly used for collecting overwater overflowing oil and providing buoyancy; and an oil-water interface monitoring probe is arranged on the upper container and buoyancy compartment device so as to intelligently control the pump station to operate. The lower container and buoyancy compartment device is also a container defined by the buoyancy material, wherein the container is mainly used for initially collecting an oil-water mixture and providing certain buoyancy; and the container is provided with a weir crest heating device for heating overflowing oil at the weir crest of the oil recovery device and a water injection pipe for adjusting the buoyancy of the entire oil recovery device. The turbine device is mainly used for guiding water in a lower container to overflow, so that the overflowing oil is better collected. The pump station system uses hydraulic power and sucks the oil sucked in an upper container to discharge. The buoy-type weir oil recovery device provided by the invention not only has functions of the traditional weir oil recovery device but also can be used for efficiently recovering the overwater overflowing oil, is slightly influenced by waves, and is a combined oil recovery device.

The invention discloses an intelligent winch type pulling oil production system. The system comprises a drive assembly (1), a rack (2), an oil pumping rope (3) and a control device (9), wherein the drive assembly is provided with a winding drum (11) and a drive device (12) driving the winding drum (11) to rotate; a pulley (21) is installed on the rack; one end of the oil pumping rope is wound on the winding drum (11) and the other end thereof is connected with an oil production device (4) in an underground oil well pipe (5) by bypassing the pulley (21); the control device is used for controlling the drive device (12) to rotate; the oil production device (4) is provided with an underground liquid column height detector (6); and the underground liquid column height detector (6) transfers the detected liquid column height signal to the control device so that the control device controls the drive device (12) to act when receiving the preset liquid column height signal, thus driving the oil production device (4) to pull the liquid in the oil well pipe (5) out of the well mouth. The system has high oil production efficiency, reduces the energy consumption and reduces equipment wear.

The invention provides a polymer microsphere for oil field profile control and water plugging and a preparation method thereof. The polymer microsphere is of a three-layer spherical structure, and comprises a positive ion inner core, a middle oleophilic casing layer and an outer layer negative ion hydrophilic casing layer, wherein the positive ion inner core comprises acrylamide, cationic monomers and crosslinking agent copolymers; the middle oleophilic casing layer comprises acrylamide, oleophilic monomers and cross linking copolymers; the outer layer negative ion hydrophilic casing layer comprises acrylamide, anionic monomers and crosslinking agent copolymers. The polymer microsphere prepared according to the invention has the advantages that the particle diameter range is controllable in the dimension range of 1 to 500 mu. m; in the use process, the outer hydrophilic casing layer and the middle oleophilic casing layer are gradually degraded along with the prolonging of the water dissolution time; the inner core has good water absorption expansion performance; the dimension after the sufficient expansion reaches 30 to 1500 mu. m; good expansion performance and good plugging performance are realized. The polymer microsphere is solid powder; the storage is convenient; the stability is high; the validity period is 3 to 5 years; in the use process, the addition of other auxiliary agents is not needed; the polymer microsphere can be fast dispersed in the solvent.

The invention provides a remote management device for oil field wells. The device comprises a remote sensing component and a remote monitoring component, wherein the remote sensing component and the remote monitoring component are communicated and connected with each other via wireless data; the remote sensing component comprises a containing box, the containing box is internally provided with a signal collecting module, the input end of the signal collecting module is connected with a main sensor module, and the output end of the signal collecting module is connected with a communication module; and the remote monitoring component comprises a containing box, the containing box is internally provided with a communication machine, the signal output end of the communication machine is connected with a real-time database server, and the control port of the communication machine is connected with a computer system module. Therefore, the device has the following advantages: the crude oil yield can be increased; oil wells can work in optimum conditions; the well patrolling cost and the labor intensity of workers are lowered; and the working efficiency of managers can be greatly improved.

The present invention discloses a method of electromagnetic drive rectilinear motion and the device thereof, comprising a electric driver, two electromagnets in the shape of U (two feet are in parallel and form an angle at one end), a straight metal conductor provided with a location sensor which form a shape of letter 'n' with the electromagnets. Inputting two continuous periodic sawtooth wave pulse current to the device, generating periodically enhanced or weakened magnetic field on two magnetic poles of the electromagnets, generating periodic magnetic flux enhancement or weakening on touch part between conductor and magnetic poles, generating eddy current on partial conductor and the energy conversion used for conductor displacement, hence electromagnetic linear drive and power - magnetic energy - mechanical energy conversion are realized. As prime mover of rectilinear motion and or straight reciprocating motion, the device in the invention can replace existing bent axle or complex mechanism like eccentric wheel, engine oil cylinder etc., and can be applied on engine of motorcycle and electric vehicle, new electric submersible direct-drive reciprocating pump (oil well), compressor of refrigerator and air condition, high pressure pump, intercity maglev light rail, maglev train and ship injection propulsion pump etc. as a new engine device.

Provided is a universal random deviation rectification outside injected magnetic fluid polished rod sealing device applied for oil extraction in the oil field. The universal random deviation rectification outside injected magnetic fluid polished rod sealing device comprises a polished rod sealing culvert at the upper portion, wherein an upper and a lower group of permanent magnets are arranged in the culvert, an injection hole is formed in the middle portion capable of Is capable of injecting and supplying magnetic fluid into a cavity in due time to conduct a dynamic sealing to the polished rod, and a universal-joint mechanism at the lower portion is capable of rectifying deviation randomly in radial and axial three-dimensional space. A polished rod sealing culvert assembly is arranged above the random deviation rectification mechanism. The universal random deviation rectification outside injected magnetic fluid polished rod sealing device thoroughly resolves problems that production halts often occur due to applying packing polished rod sealing device in the existing oil extraction with huge energy consumption and easy damage, causing emitting, dipping and leakage of well mouth pressed oil, gas and water and accompanying serious environmental pollution, potential safety hazard and other world class problems, and can be widely applied in well mouth polished rod sealing of oil field sucker-rod pump oil extractor.

The invention relates to pour point depressing and viscosity reducing composition for heavy oil, a pour point depressing and viscosity reducing agent for the heavy oil and a preparation method of the pour point depressing and viscosity reducing agent, and belongs to the technical field of oil exploitation. The pour point depressing and viscosity reducing composition for the heavy oil comprises components in parts by weight as follows: 25-55 parts of a surfactant, 5-20 parts of a dispersing agent, 15-20 parts of an inhibitor and 20-50 parts of a co-emulsifier, wherein the dispersing agent contains polyoxyethylene alkyl amine, and polyoxyethylene alkyl amine accounts for not lower than 9% of the dispersing agent in percentage by mass. The pour point depressing and viscosity reducing composition for the heavy oil has good emulsifying viscosity reduction functions on the heavy oil with the gum asphalt content of 40% and the freezing point of 40 DEG C, the viscosity reducing rate can be up to 99% or higher and the pour point depressing range can be up to 15 DEG C or higher only through addition of 0.5% by mass of the pour point depressing and viscosity reducing agent product, and the problems of high entering-pump resistance of crude oil and difficulty in shaft lifting can be solved very well.

The embodiment of the invention provides a downhole electric heating horizontal production well string structure. The string structure comprises a casing pipe, a horizontal liner pipe and oil pipes located in a cavity formed by the casing pipe and the horizontal liner pipe in a defined mode, the oil pipes include the first metal oil pipe and the second metal oil pipe which are used for forming an electromagnetic wave energy transmission channel, the first metal oil pipe is sleeved with the second metal oil pipe, and the cavity between the second metal oil pipe and the first metal oil pipe is filled with an insulating material; the casing pipe and the horizontal liner pipe are insulated and isolated, the horizontal liner pipe is horizontally divided into two parts which are insulated and isolated to serve as two arms of a radio frequency antenna, and the first metal oil pipe and the second metal oil pipe are correspondingly coupled with the two arms of the radio frequency antenna respectively. The structure further comprises a continuous oil pipe for forming an oil and gas transmission channel, the continuous oil pipe is located in the cavity formed by the casing pipe and the horizontal liner pipe in the defined mode, and a hot fluid injecting pipe is installed in the continuous oil pipe. The embodiment can be used for collaborative development of electromagnetic waves and hot fluid.

The invention discloses a main controlling factor analysis for shale oil production and an earthquake prediction method and device. The main controlling factor analysis for shale oil production and the earthquake prediction method and device are characterized in that the main controlling factor analysis for shale oil production is capable of establishing a shale oil and gas reservoir accumulation mode which plagues scientific research workers from a long time by means of analyzing shale oil and gas accumulation conditions, oil and gas geological characteristics and oil and gas accumulation characteristics; the earthquake prediction method and device conducts prediction by selecting a targeted earthquake prediction technique to ultimately realize comprehensive prediction of oil and gas enrichment region of a shale oil reservoir in Langzhong area of Sichuan province; the main controlling factor analysis for shale oil production and the earthquake prediction device mainly comprises a driller, a lifting base, an acoustic detector, a camera, a sensor, an analysis computer and a storage printer. Furthermore, the main controlling factor analysis for shale oil production and the earthquake prediction method and device determines main controlling factors of shale oil drilling production in Daanzhai section of Langzhong area to predict favorable areas for oil and gas via a corresponding earthquake and geological prediction technique, thereby improving oil recovery efficiency and laying the foundation for the further exploration of shale oil and gas in Sichuan area.

The invention discloses a compact hydraulic oil pumping machine adopting a composited pneumatic-hydraulic cylinder, which comprises a power unit and an oil pumping unit, wherein the oil pumping unit is an executing part of the hydraulic oil pumping machine, directly placed at a wellhead and used for driving a polish rod; and the power unit is connected with the oil pumping unit through an oil pipe and a control cable, and used for controlling and driving the oil pumping unit to move. A closed hydraulic circuit of a three-cavity composited pneumatic-hydraulic cylinder is controlled by using a variable-rotational-speed pump, the up-and-down motion of a piston rod of the composited pneumatic-hydraulic cylinder drives a movable block, and the movable block lifts a beam hanger at the tail end of a steel wire rope wound around the movable block so as to realize an oil pumping process of a sucker-rod pump. A balance weight cavity of the composited pneumatic-hydraulic cylinder is connected with a nitrogen tank so as to realize pneumatic balance. The three-cavity composited pneumatic-hydraulic cylinder and the nitrogen tank both are functional parts and brackets of the oil pumping machine, and a walking beam and a truss are not required. An effect of pneumatic balance and an effect of variable-frequency valveless direct drive are simultaneously achieved by using the three-cavity composited pneumatic-hydraulic cylinder; and the compact hydraulic oil pumping machine is large in load capacity, compact in structure, steplessly regulated in stroke and jig frequency, small in reactive loss of motors, and high in oil pumping efficiency.

The invention provides a magnetofluid polished rod sealer used for oil production in an oil field, comprising a housing; the lower end of the housing is enclosed, the upper end is provided with gram and a gland bush and the gland bush is sheathed on the outside of a polished rod; particularly, a magnetic sleeve gasket is arranged in the housing, the inner ring surface of the magnetic sleeve gasket is provided with a fill area opposite to the polished rod and the fill area is filled with magnetofluid; the upper end and the lower end of the magnetic sleeve gasket are respectively provides with an upper sleeve gasket and a lower sleeve gasket. The invention completely solves the long-standing problems of high power consumption, vulnerableness, 'running', 'emitting', 'dropping' and 'leaking' of oil-gas-water and harm on safety and environment protection of the existing oil producing sealer and the like; the sealer can be widely used for sucker-rod pumping wells in the oil field.

The invention relates to a liquid level-pressure coordinated control method used for a gas-liquid separator, used to set a liquid level-pressure coordinated control device. The method comprises: presetting each target value and opening initial values; determining whether gas-phase pressure is larger than a preset gas-phase pressure target value, calculating a valve opening value of a first pneumatic control valve and feeding back to a valve to operate; determining the relations between the difference value of the maximum value and the minimum value of pressure measuring values and pressure fluctuation errors; determining whether liquid level measuring values are larger than a preset liquid level height target value, calculating the valve opening value of a second pneumatic control valve and feeding back to a valve to operate; determining relations between the difference value of the maximum value and the minimum value of liquid level measuring values and liquid level fluctuation errors; performing simple control on gas-phase pressure and liquid level height in the gas-liquid separator; determining received liquid level height; and a liquid level-pressure operation control module determining whether the received gas-phase pressure exceeds an error range, and determining whether the received liquid level height exceeds an error range.

The invention relates to an oil extraction system for an oil well, and in particular relates to a sucker-rod pump oil extraction system used in mechanical oil extraction of the oil well, wherein the sucker-rod pump oil extraction system comprises a sleeve pipe and an oil pipe installed in the sleeve pipe; the oil pipe is internally provided with a rocker-rod oil extraction pump which comprises an oil-well pump and a sucker rod connected with the oil-well pump. The oil extraction system is characterized in that an oil sleeve annular space between the oil pipe and the sleeve pipe, close to the oil-well pump, is provided with a packer, thus the oil sleeve annular space is separated in upper and lower; the oil pipe corresponding to the above of the oil-well pump and the packer is connected with a hydraulic communicating valve; the crude oil pumped by the oil-well pump enters the oil sleeve annular space through the communicating valve; an oil outlet which is communicated with the sleeve pipe annular space is formed on the upper end of the sleeve pipe; and the oil pipe above the oil-well pump is internally filled with lubricating media. According to the invention, the abrasion between the rocker rod and the oil pipe can be relieved effectively; and the liquid flow quantity is great, the oil well oil extraction system can be used for a high-water-containing eccentric wear oil well with greater well depth, the construction is simple and convenient, and the cost is low.

The invention provides a fabricated rotor rare-earth permanent magnet torque motor. The fabricated rotor rare-earth permanent magnet torque motor comprises a stator, a rotor, an end cover, a hollow rotor shaft, a double-barrel non-magnetic rotor bracket formed by sleeving a small barrel in a big barrel, magnetic pole shoes embedded at the outer edge of the rotor bracket at equal intervals and in a spacing manner and a rare-earth permanent magnet, wherein an upper end plate and a lower end plate both made of a non-magnetic material and used for fixing a permanent magnet are mounted on the two ends of the rotor respectively. Due to such the design, the assembling technology of the motor rotor is better, the rotor is lighter in weight, the rotational inertia is lower, the permanent magnet material is less, the utilization rate of the permanent magnet is higher, the leakage flux is lower, the reliability is higher and permanent demagnetization can be avoided. Therefore, the comprehensive performances of the low-speed high-power torque motor are improved greatly.

The invention relates to the technical field of pumping units, in particular to a lifting platform type pumping unit, which comprises a mounting support, a supporting base, a slider, a scissor type lifting platform, a counterweight sleeve, a counterweight cylinder, a left fixed pulley, a right fixed pulley and a sucker rod; the supporting base is arranged under the mounting support, and a power system is fixedly mounted on the supporting base; a pair of slider rails are fixedly mounted on the inner lower part of the mounting support, and the slider is mounted between the slider rails; the slider can be driven by the power system to move up and down; a crossbeam is fixedly mounted at the middle of the mounting support, and the scissor type lifting platform which can be extended and retracted is mounted on the crossbeam and located in the mounting support. The lifting platform type pumping unit has a reasonable and compact structure, and is convenient to use; the oil-pumping stroke can be increased by the scissor type lifting platform, consequently, the efficiency of oil production can be increased, and the oil output can be increased; the scissor type lifting platform is a link structure, the weight is light, and drive is flexible; the power of a used electromotor is low, consequently, more energy can be saved, and the cost is reduced.

The invention discloses a microbial multi-cycle huff and puff oil production method. The method comprises the following steps that: strains are screened, acclimated, cultivated and produced; determined process of injection parameters which comprise strain liquid injection rate, nutrient solution injection rate, shortest well shutdown time t and multi-cycle huff and puff interval parameters; and an oil-well microbial community is tracked and monitored. In the method, the tracking and the monitoring are performed by molecular biology; a field process is improved by combining the actual production condition and a monitoring result; and the method has the advantages of simple construction process, low cost and high oil production efficiency.

The invention provides a pumping unit fault diagnosis method based on an improved unscented Kalman filter and an RBF neural network. Firstly, modeling is performed on decision parameters by using theRBF neural network; then, the weights, center and width of the hidden layer of a neural network model are updated by using an mproved unscented Kalman filter algorithm in real time to obtain optimal parameters of the neural network; and the pumping unit fault diagnosis method based on the combination of the improved unscented Kalman filter and the RBF neural network is established. The remarkableeffect of the invention lies in that: the accuracy rate of fault diagnosis is improved, and the purpose of real-time detection of the operation condition of a pumping unit is truly achieved.

The invention provides an axial oil collecting ring and an inner-ring lubricating device and method of an aviation engine main bearing. The axial oil collecting ring comprises a cylindrical oil collecting ring body, a plurality of oil collecting grooves arranged in the circumferential direction are formed in the inner wall of the oil collecting ring body, one end of each oil collecting groove penetrates to the opening of the oil inlet end of the oil collecting ring body to form an oil collecting inlet, and the other end of each oil collecting groove does not penetrate to form an oil collectingbaffle wall; an oil conveying hole penetrating through the wall surface of the oil collecting ring body is formed in the position, near the corresponding oil collecting baffle wall, of each oil collecting groove; the inner-ring lubricating device comprises the axial oil collecting ring, a main shaft, a bearing, a bearing seat sleeving the bearing and an oil supply nozzle which is arranged on thebearing seat and connected with an oil supply path and penetrates into the bearing seat; the axial oil collecting ring sleeves the main shaft, the bearing sleeves the axial oil collecting ring, and both the axial oil collecting ring and the bearing can rotate synchronously along with the main shaft. According to the axial oil collecting ring and the inner-ring lubricating device and method of theaviation engine main bearing, quantitative distribution of lubricating oil can be realized under high oil collection efficiency, lubrication and cooling requirements of high-speed rolling bearings aremet, and safety and reliability of the bearings are improved.

The invention provides a single-well water-containing-rate remote metering device and a transmission method of single-well water-containing-rate data. The single-well water-containing-rate remote metering device can achieve single-well on-site on-line continuous metering and is small in metering error, low in manufacturing cost, high in metering speed and capable of saving labor and material resources. The device comprises a water-containing analysis instrument composed of a probe, a radio frequency signal generator, a center processor, a data storage and an RS 485 communication port. The center processor is connected with a remote transmission module. According to the transmission method of the single-well water-containing-rate data, the single-well water-containing-rate remote metering device is arranged in each well, the center processor stores a water-containing-rate curve mathematical model in advance, the water-containing-rate in a wellhead production fluid is measured and transmitted to a data center server through the remote transmission module, meanwhile, the measured data are uploaded to a central control room through the RS485 communication port, the measured water-containing-rate data are collected in real time, remote zero calibration and parameter configuration are carried out, then the data are transmitted to a host of a user through the Internet, and a manager can learn about and monitor single-well water-containing metering operations remotely.

The invention discloses a preparation method of long-chain fatty alcohol-polyoxyethyleneether sulfate and amphoteric surfactant as well as an application thereof in tertiary oil recovery. According to the special scheme, long-chain fatty alcohol ether, chlorosulfonic acid and sodium hydroxide are used as main raw materials, and are subjected to sulfonation and neutralization reactions to synthesize a nonionic-anion surfactant. The preparation method has the advantages of simple process, low cost of the raw materials, wide sources, stable product property, environmental friendliness and economical benefits. An oxethyl group is embedded into the long alkyl chain of the anion surfactant, so that the surface activity is high, the thermal stability and the anti-salt capability are good, the compatibility is good and the biodegradation property is good. The preparation method of an oil-displacing agent and the other surfactants provided by the invention has very good coordination effect and is used for preparing the efficient oil-displacing agent in the tertiary oil recovery, so that the ultralow interface tension can be formed on a water-raw oil interface. Furthermore, the interface tension is not influenced by temperature, mineralization degree and calcium-magnesium ion concentration.

The invention discloses an oil pumping unit system with multiple sections of steam injection packer parts. The oil pumping unit system comprises an oil pumping unit body, a steam injection thermal production oil pump and a packer assembly. The oil pumping unit body is connected with the steam injection thermal production oil pump through a traction system of the oil pumping unit body. The steam injection thermal production oil pump is connected with the packer assembly through a release sub. The packer assembly comprises the release sub, a first oil discharging pipe, a first side sealing spindle, a second oil discharging pipe, a second side sealing spindle, a third oil discharging pipe, a third side sealing spindle, a packer body, a one-way valve, a first spraying head, a second spraying head, a sealing ring, a fourth oil discharging pipe, a third side sealing spindle, a fifth oil discharging pipe, a fourth side sealing spindle, a third spraying head, a ventilation pipe, a cable inletguiding part and a side gas pipeline.

The invention discloses an oil collecting device. The oil collecting device comprises a fixed frame, wherein a rotating shaft is transversely inserted onto the fixed frame, an oil collecting rolling shaft is arranged on the rotating shaft, a half-arc-shaped oil collecting pipe is arranged on the fixed frame at the rear side of the oil collecting rolling shaft, a scraper is arranged at one side, close to the oil collecting rolling shaft, of the half-arc-shaped oil collecting pipe and is abutted against the surface of the oil collecting rolling shaft, the two ends of the half-arc-shaped oil collecting pipe are abutted against the fixed frame, an oil outlet is formed in the fixed frame at one side of the half-arc-shaped oil collecting pipe, and the half-arc-shaped oil collecting pipe is tilted towards the oil outlet side. Through the characteristic of stickiness of oil and rolling of the oil collecting rolling shaft on the surface of oily water, oil will be adsorbed to the surface of theoil collecting rolling shaft, the oil adsorbed to the surface of the oil collecting rolling shaft will be scraped off by the scraper when the oil collecting rolling shaft passes through the scraper during rotation, and then, the oil flows onto the half-arc-shaped oil collecting pipe and then is discharged through the oil outlet, so that efficient oil collecting is achieved, water is prevented frombeing collected during oil collecting, and efficient oil-water separation is achieved.

The invention discloses an oil shale oven and a carbonification process, wherein the oil shale shale oven comprises feeding equipment, a gas collecting umbrella, an oven body, a carbonification section, a mixing chamber, an arch abutment and a generating section, wherein a wind shoe, an ash exhauster and an cupel are arranged at the bottom of the generating section; the side parts of the mixing chamber are provided with circulating gas inlets; and circulating gas are introduced to the carbonification section to heat oil shale. The invention also relates to the carbonification process of the oil shale, which is characterized by carrying out carbonification stage twice and using full circulating gas for heating so that the oil shale is completely carbonified in the oven body, no incomplete carbonification phenomenon happens and high oil extraction efficiency is achieved. The invention has the advantages of novel structure, ingenious design and easy operation control, and the the carbonification process has high oil extraction efficiency , little environment pollution and high utilization rate of the oil shale.

The invention discloses an energy-saving oil pumping mechanism used for oil field, which belongs to the technical field of oil exploitation machinery and includes a derrick, a machine platform, a first head block assembly and a second head block assembly, a first transition block assembly, and a second transition block assembly, a power device, and a hauling cable. The machine platform is provided with a first hauling cable hole and a second hauling cable hole on a platform surface and is provided with barriers on the surrounding of the platform surface; and the machine platform is fixed on the top of the derrick. The first head block assembly and the second head block assembly are fixed on the machine platform; the first transition block assembly and the second transition block assembly are arranged on the machine platform; the power device consists of a tractor, a traction sheave and a brake, and is arranged on the machine platform; one end of the hauling cable is connected with a sucker rod and the other end is twisted on the second head block assembly, the first transition block assembly, the traction sheave, the second transition block assembly and the first head block assembly, and then is induced into the first hauling cable hole and is connected with the sucker rod of another oil well pipe or is connected with a counterweight device. The energy-saving oil pumping mechanism used for oil field has a high transmission efficiency, is convenient, safe and convenient to be used, has a simple integral structure, is convenient to be managed and protected, can realize to configure two wells for one machine, has high mechatronics degree and saves power energy.

The invention discloses a blowout prevention oil well pump for an oil field, which comprises a pump body, wherein the pump body is internally provided with an oil pumping mechanism and a blowout prevention device; the oil pumping mechanism comprises a first oil pumping part and a second oil pumping part; the second oil pumping part comprises a second oil pumping device, an oil pipe and a pump cylinder; the first oil pumping device and the second oil pumping device comprise plungers and valve rods; oil-collecting hoods are arranged at the tops of the plungers; a connection bracket is arranged between every two adjacent valve rods and comprises a rotation support block, a telescopic connecting rod and a locating block; and the blowout prevention device comprises a housing; the housing is internally provided with a one-way guide plate; a buffer plate is arranged on the one-way guide plate; and an oil nipple and a filter screen are arranged at the bottom of the pump body. The oil recovery efficiency of the oil well pump is improved, continuous oil recovery is realized, simultaneous oil production of the double valve rods is realized, the oil production efficiency is improved, the oil recovery cost is lowered, and the economic benefit is significant.

The invention belongs to the technical field of oilfield chemistry, and particularly relates to an oil extraction method and a CO<2> injection amount determination method and device used for assistinghuff-puff oil increase. The oil extraction method comprises the following steps that firstly, pore volume, oil saturation, crude oil density, gas-oil ratio, gas-water ratio and crude oil compressioncoefficient are acquired, and substituting the pore volume, the oil saturation, the crude oil density, the gas-oil ratio, the gas-water ratio and the crude oil compression coefficient into a carbon dioxide injection amount model is carried out to obtain carbon dioxide injection amount; the carbon dioxide injection amount model is constructed according to the relationship between the carbon dioxideinjection amount and the pore volume, the oil saturation, the crude oil density, the gas-oil ratio, the gas-water ratio and the crude oil compression coefficient; then the carbon dioxide injection speed is determined; and finally, carbon dioxide is injected to assist huff and puff according to the determined carbon dioxide injection amount and injection speed so that oil extraction can be carriedout. According to the model, the physical parameters of an oil layer and the solubility of the carbon dioxide in oil and water are fully considered, the obtained carbon dioxide injection amount is proper, the oil extraction efficiency is high, and the crude oil yield is high.

The invention discloses a floor type multi-rope oil extractor system. The system comprises an oil extractor main body, a gas injection thermal recovery oil extracting pump and a packer module; the oilextractor main body is connected with the gas injection thermal recovery oil extracting pump through a traction system thereof; the gas injection thermal recovery oil extracting pump is connected with the packer module through a hand-free joint; the oil extractor main body comprises a concrete foundation, a shifter guide rail, a rail clamper module, a control cabinet, a bracket, an adjustable balance counterweight, an upper platform, an upper guard combination, a power device, a brake, the traction system and an elevator; the traction system comprises a traction wheel, a steel wire rope, a movable pulley set and a steel wire rope joint; the steel rope is divided into an elevation steel wire rope and a balance steel wire rope; one end of the elevation steel wire rope is fixed on the traction wheel and bypassed through the traction wheel, and the other end is fixedly connected with the steel wire rope joint on the bracket through the elevator and the movable pulley on the elevator; andthe balance steel wire rope is opposite to the elevation steel wire rope, one end is fixed on the traction wheel and bypassed through the traction wheel, and the other end is fixedly connected with the steel wire rope joint on the bracket through the adjustable balance counterweight and the movable pulley on the adjustable balance counterweight.