48results about How to "Drilling safety" patented technology

The invention specifically relates to an additive composition applicable to viscosity reduction of an oil-based drilling fluid and application thereof, and the oil-based drilling fluid and application thereof. The additive composition is a double block copolymer which is composed of a block A and a block B, wherein the block A is composed of a constitutional unit as shown in a formula (1) which is described in the specification and has a number-average molecular weight of 1500 to 10000, and the block B is composed of a constitutional unit as shown in a formula (2) which is described in the specification. The double block copolymer can be used as a viscosity reducer for the oil-based drilling fluid, especially as a viscosity reducer for a high-density clay-free oil-based drilling fluid; and the double block copolymer can greatly reduce the apparent viscosity and plastic viscosity of the oil-based drilling fluid in high-temperature high-pressure strata while guaranteeing proper shearing force, so drilling speed can be conveniently accelerated and difficulty in well drilling can be reduced.

The invention relates to a bionic nanometer blocking agent for drilling fluid and a preparation method thereof. The bionic nanometer blocking agent is prepared from the following raw materials in parts by weight: 60 to 70 parts of distilled water, 1 to 2 parts of 2-acrylamide-2-methylpropanesulfonic acid, 20 to 30 parts of lactic acid, 5 to 10 parts of cross-linking agent, 0.7 to 1.5 parts of nanometer titania, 0.7 to 1.5 parts of molecular weight regulator, 0.1 to 0.5 part of potassium persulfate and 0.2 to 0.5 part of sodium hydroxide. The cross-linking agent is one of ethylene glycol dimethacrylate, polyethylene glycol and trimethylolpropane; the molecular weight regulator is isooctyl 3-mercaptopropionate. The preparation method comprises the following process steps of preparing alkyl solution; preparing titanium-based solution; preparing the bionic nanometer blocking agent. The bionic nanometer blocking agent for the drilling fluid, which is disclosed by the invention, solves the problems of shale hydration and extraneous water erosion in the existing drilling process; meanwhile, the bionic nanometer blocking agent has high biodegradability, so that pollution to a reservoir is effectively reduced.

The invention discloses a drilling fluid forced-cooling device and a low-temperature circulatory drilling method. The drilling fluid forced-cooling device comprises a refrigerating medium cooling system and a convection heat exchange system, wherein the refrigerating medium cooling system and the convection heat exchange system are connected in the device in series. The low-temperature circulatory drilling method for the drilling fluid forced-cooling device adopts the drilling fluid forced-cooling device to control an inside temperature of drilling fluid to be 40-50 DEG C, and comprises drilling fluid cooling cycle and refrigerating medium cooling cycle. The drilling technology can solve the technical bottleneck that a drilling fluid circulating temperature caused by an ultra-high underground temperature exceeds temperature-resistant limit of an underground tool, can effectively reduce the drilling fluid circulating temperature by reducing the inside temperature of the drilling fluid, prolongs the service life of the underground tool, is an effective means for safe and efficient well drilling of a high-temperature well, and is a key technology for deeper development of drilling operation. Process and equipment related can independently operate, so that normal drilling operation is not affected.

The invention relates to a drilling fluid used for active mud shale drilling, and the drilling fluid is used in oilfield drilling. The drilling fluid comprises the following components in percentages by weight: 2-6% of bentonite, 0.2-0.5% of coated inhibitor, 0.2-1.0% of flow pattern regulator, 0.2-0.5% of high-temperature-resistant polymer filtrate reducer, 4-7% of potassium chloride, 1-3% of polymeric alcohol, 0.5-1.0% of polyamine inhibitor, 0.5-1.0% of anti-balling fast drilling agent and 45-85% of water. The drilling fluid has the inhibition property and lubricating property approximate to that of an oil-based drilling fluid, solves the problems that the mud making of the mud shale is severe, mud escapes from a vibrating screen, the viscous shearing of the drilling fluid increases and the rheological properties of the drilling fluid deteriorates during strong-mud-making active mud shale drilling, prevents destabilization of the active mud shale, dispersion of drill cuttings, balling of drill bit, and adhesion and coalescence of the mud shale, and increases the drilling speed of the active mud shale.

The invention discloses an evaluation method for the ability of drilling fluid to consolidate well wall broken surrounding rock. By means of the evaluation method for the ability of the drilling fluidto consolidate the well wall broken surrounding rock, quantitative evaluation for improving shear strength between broken blocks through the drilling fluid is realized, and reliable mechanical parameters are provided for the stability of the well wall of a fractured formation. Meanwhile, a scientific and effective experimental method is provided for performance optimization of the drilling fluidand optimization of the drilling fluid, a powerful support is provided for establishment of a fractured formation well wall stabilizing system technology, and the method is of great significance in safe and efficient drilling of deep oil and gas.

The invention relates to drilling machinery, in particular to a wall traceless safety water drilling machine. The wall traceless safety water drilling machine comprises a motor, a transmission device,a water drill bit, a wall fixing device, a guide rail 8 and a water pipe, wherein the wall fixing device comprises an expansion screw which is fixed on a wall and the guide rail which is in threadedconnection with the expansion screw, and the expansion screw and the guide rail are fixed to the center of a drilling hole; a sliding block is provided with a longitudinal central cavity, and the guide rail penetrates through the central cavity of the sliding block; a rack is arranged on the top surface of the guide rail, and a pinion meshed with the rack is arranged at the rear end of the slidingblock; the front end of the sliding block is a hollow cylinder, a driven gear is installed through a bearing, the water drill bit is installed on the driven gear, and the driven gear is meshed with adriving gear of the output shaft of the motor. The wall traceless safety water drilling machine has the beneficial effect that the sliding block 6 with the longitudinal central cavity 7 are arranged,the sliding block 6 with the longitudinal central cavity 7 can move along the guide rail, the expansion screw is fixed to the center of a wall drilling hole, the guide rail is fixed on the expansionscrew, the water drill is drilled in the drill hole namely the center of the drill hole through, the drilling wall core is removed after drilling hole, and no fixed mark is left on the wall, then, thesliding block 6 of an installation motor moves along a center guide rail, so that the drilling is labor-saving, stable, safe and positive in drilling.

The invention relates to a bionic wall reinforcer for drilling fluids and a preparation method thereof. The bionic wall reinforcer is prepared from the following raw materials in parts by weight: 85.215-85.237 parts of distilled water, 9.129-9.140 parts of polyphenol protein, 3.550-3.561 parts of acrylamide, 2.028-2.039 parts of dimethyldiallylammonium chloride and 0.072-0.083 part of potassium persulfate. The preparation method of the bionic wall reinforcer for drilling fluids comprises the following steps: preparing a bionic group solution; preparing a bionic wall reinforcer potential solution; and preparing the bionic wall reinforcer. The properties of the bionic wall reinforcer are as follows: the low-temperature low-pressure filter loss reduction rate is greater than or equal to 30%, the core compression strength increase rate is greater than or equal to 8%, and the core linear expansion reduction rate is greater than or equal to 30%. The bionic wall reinforcer solves the problems of high collapse tendency of the shaft wall and loss of the drilling fluid in the existing drilling process, has high biodegradability, and effectively lowers the reservoir pollution.

The well gel valve preparing process and construction process is applied oil well construction. The gel fluid consists of base fluid 40-60 vol%, cross-linking fluid 20-35 vol%, and cracking fluid 20-35 vol%. The base fluid consists of guar gum 0.5-2.5 vol%, alkali 0.1-2 vol%, formaldehyde 0.2-0.6 vol% and water for the rest; the cross-linking fluid consists of borax 0.02-0.05 vol% and water for the rest; and the cracking fluid consists of hydrogen peroxide 0.001-0.005 vol% and water for the rest. The fluids for the well gel valve are in-situ prepared and injected into well to form the gel valve. The present invention is used in drilling well, completing well and repairing well to replace casing valve and other technological arrangements to separate slurry and kill fluid from the reservoirbed, to avoid the escape of hydrogen sulfide and other gases from the stratum, and to avoid contamination to the reservoir bed.

The invention discloses a hyperbranched polyetheramine environmental protection shale inhibitor, a preparation method thereof and a water-based drilling fluid, belonging to the technical field of oil field chemistry. The shale inhibitor is prepared by reacting diallylamine and dietheramine compounds as raw materials. The shale inhibitor provided by the invention is a hyperbranched polymer, which has good shale inhibition, clay stability and temperature resistance, and is easy to biodegrade and has good environmental protection performance; the preparation method provided by the invention has simple steps , synthetic raw materials are easy to obtain, and are suitable for industrial production; the hyperbranched polyetheramine shale inhibitor provided by the invention has good compatibility with other conventional drilling fluid treatment agent components, and the configured water-based drilling fluid is suitable for strong water-sensitive mud shale It can significantly reduce the expansion rate of shale, prevent wellbore collapse, effectively stabilize the wellbore and reduce the occurrence of downhole complex situations.

The invention relates to a clamper for filing data binding, which is composed of a scale clamp and a drilling pad. The scale clip is marked on the upper clip or the lower clip near the edge of the clip, and three semicircular holes are opened along the quartering points of the clip length as the drilling positions for binding and archiving data. The drilling pad is a cuboid with three strip-shaped hollow grooves, which correspond to the positions of the three semicircular holes on the scale clip one by one. The center of the semicircular holes is used as the drilling point for filing data. The side of the drilling pad is provided with a strip-shaped hollow groove on one side, and a pass is opened on the upper part, and the scale clamp extends into the pass to clamp the archived materials, and the clamping is firm. Utilizing the clamper for binding archives, the traditional "three points and one line" manual thread binding tool components are integrated, the binding steps are simplified, and the efficiency is improved.

The invention discloses an evaluation method for the ability of drilling fluid to consolidate the borehole wall to break surrounding rock. The method for evaluating the ability of the drilling fluid to consolidate the well wall to break the surrounding rock provided by the present invention realizes the quantitative evaluation of the drilling fluid to improve the shear strength between the broken blocks, and provides reliable mechanical parameters for the stability of the well wall in the fractured formation. At the same time, it also provides scientific and effective experimental methods for drilling fluid performance optimization and drilling fluid optimization, and provides strong support for the establishment of wellbore stabilization system technology in fractured formations, which is of great significance to safe and efficient deep oil and gas drilling.

The invention discloses a dual-track transportation residual oil recovery line for automobile dismantling, which comprises: a vehicle body transportation line, an oil unloading transportation line and a fuel tank perforation device, which includes a supporting part, and is provided with a receiving plate for accommodating part of the surface of the fuel tank; The part is arranged at one end of the supporting part close to the bar-shaped hole, and is used to fix the first end of the fuel tank; the lifting part is arranged at the end of the supporting part away from the bar-shaped hole, and drives the second end of the fuel tank to lift upwards; the punching part , including a drill bit and an oil guide plate, the drill bit can be inclined to pass through the strip hole and drill through the oil tank, the oil guide plate is arranged under the strip hole to guide the outflowing oil through the oil guide plate after the drill bit breaks the hole . Beneficial effects of the present invention: the rear end of the fuel tank is lifted by the lifting part, so that the residual oil in the fuel tank flows to one end, thereby better concentrating the waste oil, and the perforated part corresponds to one side of the fixing part, so as to realize all the concentrated waste oil Exported, the waste oil falls from the strip hole to the oil guide plate to prevent the waste oil from dripping in the workshop and keep the workshop clean.

The invention relates to aryl-substituted saccharides, glycosides, or mixtures of a plurality of aryl-substituted saccharides or glycosides, having at least good high-temperature resistance, salt resistance and filtrate loss reduction properties. The invention also relates to a drilling fluid composition prepared from the aryl-substituted saccharides or glycosides and a preparation method of the drilling fluid composition. The aryl-substituted saccharides, glycosides or a mixture of a plurality of aryl-substituted saccharides or glycosides have a substituent A and a substituent B, the structure of the substituent A comprises a unit O-R6-, and the definitions of substituents and numerical values of the units of the structure of the substituent B are as shown in the specification.

The invention relates to a bionic nanometer blocking agent for drilling fluid and a preparation method thereof. The bionic nanometer blocking agent is prepared from the following raw materials in parts by weight: 60 to 70 parts of distilled water, 1 to 2 parts of 2-acrylamide-2-methylpropanesulfonic acid, 20 to 30 parts of lactic acid, 5 to 10 parts of cross-linking agent, 0.7 to 1.5 parts of nanometer titania, 0.7 to 1.5 parts of molecular weight regulator, 0.1 to 0.5 part of potassium persulfate and 0.2 to 0.5 part of sodium hydroxide. The cross-linking agent is one of ethylene glycol dimethacrylate, polyethylene glycol and trimethylolpropane; the molecular weight regulator is isooctyl 3-mercaptopropionate. The preparation method comprises the following process steps of preparing alkyl solution; preparing titanium-based solution; preparing the bionic nanometer blocking agent. The bionic nanometer blocking agent for the drilling fluid, which is disclosed by the invention, solves the problems of shale hydration and extraneous water erosion in the existing drilling process; meanwhile, the bionic nanometer blocking agent has high biodegradability, so that pollution to a reservoir is effectively reduced.

The invention discloses a drilling and closing method for infill adjustment wells in oil fields, which is characterized in that: the safety pressure line of each water injection well in the well area is determined; if the well to be drilled is within the safety pressure line, the water injection well is closed or lowered. The water injection well is injected with pressure, otherwise, the normal water injection of the water injection well is maintained; all the water injection wells in a certain radius area centered on the well to be drilled are all shut down in the existing general drilling and closing technology, so that the water volume has a large impact and the pressure recovery is slow. Problems such as slug loosening in the third production well.

The invention relates to an improved appliance for binding archives, which is composed of scale clips and drilling pads. The scale clip is marked on the upper or lower clip by the edge of the clip, and semicircular holes are designed at a certain distance along the length of the clip, and the centers of the three semicircular holes are taken as the drilling points for file binding; The pad is a cuboid, and one end of the long side is designed with a strip-shaped hollow groove, which corresponds to the position of the semicircular hole on the scale clamp; one end of the hollow groove of the drilling pad is designed with a concave platform in the middle, which is close to the concave platform and parallel to the concave platform. The horizontal scale is marked on the upper surface of the drilling pad of the concave table, and a magnet is embedded in each end of the concave table to place and fix the scale clip; on the surface of the drilling pad parallel to the concave table, the scale is marked from left to right, and the scale clip is clamped When the archives are placed on the concave platform of the drilling pad, the scales of the two correspond one by one. By using the improved tool for binding archives and materials, the traditional "three points and one line" binding tool components are integrated, the binding steps are simplified, and the efficiency is improved.