85 results about "Resistance Factors" patented technology

Microbial ecology of a specimen is evaluated using an approach (Level I) that utilizes nucleic acid amplification with specific gene primers that will identify panels of microorganisms and antibiotic-resistance factors generating a diagnostic report (optionally with quantification of each microorganism or antibiotic-resistance factor) and an approach (Level II) that utilizes universal or semi-universal primers to amplify conserved genes at a general or specific taxonomic level that are tagged specimen specifically using a genetic or chemical marker that is specific to the specimen from which it was derived, then sequencing the amplified products with highly-parallel, high-throughput technology to provide comprehensive sequences of the microbial population in the specimen followed by analysis of this sequence information and specific targeted information from Level I and / or Level II to generate a comprehensive analysis, interpretation, and / or diagnostic report.

The invention relates to an optimal scheduling method for a single-stage pump station. The optimal scheduling method comprises the following steps: establishing mathematical models according to water pump energy consumption and water pump performance and optimizing pump station running parameters; establishing a mathematical model according to water pump energy consumption influencing factors including water pump flow and lift, and obtaining functional relations between the water pump energy consumption and every influencing factor; establishing a mathematical model according to water pump performance influencing factors including water pump flow, lift, efficiency, motor speed, upstream and downstream water level difference of the pump station and resistance factors of a system pipeline, and obtaining functional relations between the water pump performance and every factor; and adjusting the pump station by combination with the mathematical models established according to the water pump energy consumption and the water pump performance and specific changes of the real-time parameters. According to scientific management optimization technology and scheduling decisions, the water pump performance and motor efficiency factors are considered comprehensively, minimum of energy consumption of the pump is achieved for a goal of minimum of total power consumption of a pump station unit on the premise that the required flow of every time period and the lift are met.

The invention belongs to a dual-cyclone powder coal burner for power plant boilers; the invention comprises a central fan drum with a fuel gun and a Venturi segment as well as a bunching tube; a main nozzle with a flow channel and a Venturi segment inside a diversion collar and with a flared edge; a secondary air nozzle composed of a cyclone generator and a governor valve; a third air nozzle composed of a cyclone generator and a horn-shaped opening, as well as a corresponding air intake. The invention can effectively improve the radial distribution effects of interior thicker and exterior thinner in powder coal concentrate at a main spout of the burner; therefore, the invention has the perfect dense-light separation effect for powder coal; both the secondary and third air flowrate can be regulated conveniently; the flowrate ratio on the dense-light side is RQ being 0.9 to 1.0; the powder coal concentrate ratio on the dense-light side is Rc higher than 4.5; the flowing resistance factor is low and the flow speed distribution at the spout is ideal; the invention adapts to use together with boilers with rather high adaptability for coal specifies and load variations; the invention is characterized by perfect combustion stability, low emission of nitrogen oxides, and effectively avoiding fuel gun abrasion and pitting on the nozzles, as well as long service life and etc.

The invention discloses a method for selecting a plugging agent most suitable for a low permeability crack rock core from plugging adjusting agents to be selected. The experimental method comprises the following steps that (1) low permeability crack rock core models are prepared, wherein cracks are manufactured with an artificial low permeability homogeneous columnar rock core and an artificial low permeability homogeneous square rock core as matrixes by referring to actual low permeability crack reservoirs, and a crack columnar rock core model and a crack square rock core model are manufactured; (2) the crack columnar rock core model or the crack square rock core model is taken as a physical model, the plugging performance of different plugging adjusting agents with the injection amount same as the crack size, and the breakthrough pressure gradient, the residual resistance factor and the plugging ratio of each plugging adjusting agent are worked out; firstly, the breakthrough pressure gradient of each plugging adjusting agent is compared with the minimum starting pressure gradient of the model, and the plugging agents with the breakthrough pressure gradients smaller than or equal to the minimum starting pressure gradient are removed; secondly, the plugging rate of the rest of the plugging adjusting agents are compared, and the plugging adjusting agent which larger the plugging rate is, larger the breakthrough pressure gradient is serves as the most adaptive plugging adjusting agent for the low permeability crack rock core.

The invention belongs to the technical field of petroleum industry, relates to a measuring method for performance of foaming agent, specifically relates to measurement of high temperature performance of foaming agent. By measuring the foam volume and half-life of the foaming agent under different temperature conditions, the method obtains average foam comprehensive index as the measurement result of the foaming performance and foam stabilizing performance of the foaming agent; on this basis, by measuring the resistance factor of the foaming agent under different temperatures conditions, an average foam resistance factor is obtained to be used as the measurement result of the sealing and blocking performance of each foaming agent. The method can objectively measure the foaming performance, foam stabilizing performance and sealing and blocking performance of the foaming agent under varying temperature conditions, thus realizing the optimal selection of the foaming agent used for blocking and profile adjusting under high temperature vapor conditions on the site of oil field.

The invention relates to a submarine with internal and external water reducing resistance to internally form efficient and energy-saving power impelling, in particular to a submarine capable of automatically generating electrical power for persistently sailing. Conventional submarine sailings have rudder resistance and the fluid resistance and the noise of surface orifices, and ballast water occupies the load during sailing; the power of a propeller pays out energy consumption for loading the water weight and various resistance factors, and partial power is lost and wasted; and the bearing capacity of a commonly known diesel-electricity storage energy source is limit, the power is limit, and the endurance of sailing oceanic energy sources is limit. The innovative impelling mechanism adopts the scheme that the submarine is provided with a relevant guide rudder and has no resistance; the orifices are inwards arranged for collective and distributive drainage; the ballast water is converted and reduced for light sailings; bundling untangling is water jet propulsion; the power loss is reduced, and the impelling efficiency is increased; the submarine impelling mechanism has the multiple dual-purpose effect of water, the storage electricity source impels to promote the resistance, and water resources circularly act on a generating system and an electrical system; a distribution system is switched, and the generating system is operated to output electric energy so as to promote to generate energy and supply for the endurance; the energy replacing and saving are finished, and the emission is reduced; and the submarine is beneficial to the ecological protection and suitable for oceanic strategies and embodies full energy storage innovative and characteristic oceanic sailings.

The invention discloses a flexible DC distribution line protection method based on transient current similarity, and belongs to the DC distribution system protection technical field; the method aims at the flexible DC distribution system, and derives a mathematics expression of a fault current after a DC line fails according to current change physics nature and direction characteristics at the DCline failing moment in the system; aiming at the conditions that a conventional protection cannot fast move after the DC line fails, the invention proposes the protection determination method that uses a cosine similarity; the method is simple, reliable, fast in power swing, can accurately determine DC line zone internal and external faults, thus selecting the fault line; the method is applied toDC line fault determination in a multi-terminal flexible DC distribution system; the method is not affected by line length, communication non-synchronization and transit resistance factors, thus improving the whole system operation reliability, and providing good selectivity and adaptability; the method is easy for promotion and application.

The present invention relates to profile control agent, and is one kind of zeolite profile control agent and method of injecting the zeolite profile control agent into profile control well. The zeolite profile control agent consists of zeolite of 40-200 mesh size, polymer of anion type polyacryamide and water in the weight ratio of 0.5-5.0 to 0.04-0.08 to 100. The zeolite profile control agent is injected into profile control well with profile controlling hydraulic pump in the amount of 5,000-10,000 cu m each well and the injection radius of 1 / 3-1 / 2 distance between the profile control well and the oil well. The zeolite profile control agent can increase the residual resistance factor and raise the oil recovering rate by 3 percentage points, and has simple injection process.

The present invention discloses a fluid mechanics comprehensive experiment device. The device comprises an engine body and a pressure stabilization water tank, a water tank, a metering water tank, a pressure measurement plate and an experiment pipeline which are installed on the engine body; an indication dose bottle is installed on the pressure stabilization water tank, and the bottom portion ofthe indication dose bottle communicates with a reynolds experiment pipeline through a rubber tube; a vertical overflow plate and a vertical steady flow plate are arranged in the pressure stabilizationwater tank, the bottom portion of the pressure stabilization water tank is connected with the water tank through an overflow pipe and a water supply pipe, the water tank is internally provided with awater pump, and one end of the water pump is connected with the water supply pipe. The fluid mechanics comprehensive experiment device can perform the following experiments: 1) the reynolds experiment; 2) the local resistance factor measurement experiment; 3) the Venturi meter flow measurement experiment; 4) the orifice plate flowmeter experiment; 5) the Pitot tube experiment; 6) the bernoulli equation experiment; 7) the on-way resistance coefficient measurement experiment. The fluid mechanics comprehensive experiment device is simple in usage method, accurate in measurement result and high in market promotion value.

The invention discloses a resistance measuring device and method for measuring the wind resistance factor of a non-smooth surface object. The device comprises a dynamometer connecting shaft, a wind inlet section, a wind meter, a fan, a test observation section and a flow guide wind grid arranged between the wind inlet section and the test observation section; the test observation section is provided with two guide rails; the dynamometer connecting shaft penetrates through the wind inlet section and the test observation section; during the test, the non-smooth surface object is placed on the dual guide rails firstly, and one end of a stay wire is tied and suspended on a hook of the dynamometer connecting shaft; then the fan is electrified to suck external air, the air is shunted by the flow guide wind grid and is exhausted after passing by the non-smooth surface object; meanwhile, the non-smooth surface object moves on the dual guide rails along the horizontal direction, when the dynamometer connecting shaft horizontally moves as the non-smooth surface object is subjected to the resistance of the air flow, the dynamometer connecting shaft can pulls a digital dynamometer to test the magnitude of the wind resistance applied to the non-smooth surface object. The resistance measuring device is simple in structure, the test means is simple, convenient and fast and the errors are smaller.

The invention discloses a complex terrain-based optimal path searching method, which comprises the following steps of dividing a map into m*n rectangular nets, endowing each net with one of six terrain attributes, namely different resistance factors, setting a starting point rectangle and an end point rectangle, and determining a rectangle which a user moves towards next by comparing the sum of actual energy consumption from one rectangle to a peripheral rectangle and the planned energy consumption from the peripheral rectangle to the end point rectangle. According to the method, by calculating and judging the energy consumption by meeting barriers in various paths in a given region and selecting the optimal path, the method is simple and results are accurate. A constructor function is used for performing attribute assignment on each point, different attributes present different barrier varieties, whether a path is good or bad is judged through energy consumption, and the path in which the user takes the least time, costs least and consumes least energy can be selected.

The invention relates to the technical field of steam generator heat exchangers and particularly discloses a novel supporting device for steam generator heat exchange tubes of a pressurized water reactor nuclear power plant. A U-shaped heat exchange tube mounted in a heat exchange tube bundle sleeve in the supporting device is supported and fixed through a plurality of parallel heat exchange tube supporting plates, a tube lane area is formed by the U-shaped heat exchange tube with the smallest bent radius, tube bundle area are formed in the two sides, and the supporting plates and the wall of the U-shaped heat exchange tube form flow channels with plum blossom petal holes in the section. Supporting boss edges for supporting the heat exchange tube supporting plates are distributed on the heat exchange tube supporting plates. The ratio of the sectional area of the heat exchange tube supporting plate channels to the sectional area of two heat exchange tube supporting plate rising channels in the supporting device is large, so that the local resistance factor of the heat exchange tube supporting plates is reduced, and resistance through the heat exchange tube supporting plates is reduced; meanwhile, due to retaining plates mounted on the heat exchange tube supporting plates, the fluid can be forced to flow into the tube bundle area to be participated in secondary side heat exchange of the steam generator, and accordingly, the steam generator heat transmission efficiency is improved.

Shaped beads formed from a zeolite and a clay binder by tumbling granulation is problematic in that the strength and abrasion resistance are poor. Shaped zeolite beads with an average diameter of 1.0 to 3.0 and having a compressive strength of 35 N or greater (particularly 70 N or greater) when hydrated and an abrasion resistance factor of 1.5% or less are obtained by subjecting a composition of at least 35 parts by weight of water per 100 parts by weight of zeolite and clay binder combined to tumbling granulation and then adding 4 parts by weight or less of clay binder per 100 parts by weight of the molding (excluding the water content), subjecting the product to tumbling granulation, drying and baking. Preferably the zeolite crystals used are 5 [mu]m or smaller; between 10 and 50 parts by weight of clay binder are used; and the same type of clay binder is used for molding and grading.

The invention provides a method for evaluating adaptability of a gel microsphere profile control agent to an oil reservoir. The method comprises the following steps: preparing a plurality of cement artificial rock cores; carrying out displacement on each cement artificial rock core by using an aqueous stratum solution and a to-be-measured gel microsphere profile control agent with a known concentration, calculating residual resistance factors and determining minimum expected applicable permeability and maximum expected applicable permeability according to the residual resistance factors; respectively determining minimum applicable permeability and maximum applicable permeability according to the minimum expected applicable permeability and maximum expected applicable permeability; and determining a range with the minimum applicable permeability and maximum applicable permeability as end points as the range of permeability of an oil reservoir stratum, wherein the to-be-measured gel microsphere profile control agent with the known concentration is applicable in the range. The range can be provided by a manufacturer to a user as an applicable standard of the gel microsphere profile control agent, which facilitates selection of an appropriate concentration of the gel microsphere profile control agent by a profile control water plugging worker.

The invention relates to an online detection method for the performance of oil displacement foams. The method includes the following steps in order: conducting vacuum pumping of saturated water to a rock core, then placing the rock core into a rock core holder, testing the water phase permeability of the rock core, and recording the pressure change of a water flooding process; injecting gas and a foaming agent into the rock core according to a gas-liquid ratio, and recording the pressure change of a foam flooding process; calculating a foam resistance factor according to the pressure of the foam flooding process in a smooth state and the pressure of water flooding; conducting real-time observation of the foam state through a foam online collection chamber and a form online observation device, acquiring the foam image and performing processing to obtain foam performance parameters; and according to the comparison result of the foam resistance factor and foam performance parameters under different schemes, selecting reasonable injection parameters. The online detection method can truly simulate the foam generation process in oil reservoir, visually observe the condition of newly generated foams in the displacement process, and acquire the original foam data information, and reaches the purpose of real-time observation of the performance of foams generated in a porous medium.

A method for stably labeling liver cancer cell includes combining liver cancer cell with specific AFP single cloning antibody used as the first resistance factor, washing and climbing plate of PBS, carrying out fluorescent label by using QDs ¿C IgG composite probe as the second resistance factor, washing and climbing plate of PBS, re ¿C staining cell core with DAPI, washing and climbing plate of PBS and preserving sample in light shielded condition.

The invention provides an ecological security evaluation and optimization method and system for an abandoned land site. The method includes the steps that site investigation is conducted on a selected abandoned land site; the pollution level of the abandoned land site is determined according to the site investigation result; a resistance factor model analysis is conducted on the abandoned land site according to the site investigation result; the minimum cumulative resistance and the corresponding migration path of the abandoned land site are calculated; the ecological security evaluation index of the abandoned land site is obtained according to the pollution level of the abandoned land site and the minimum cumulative resistance of the abandoned land site; ecological restoration technical scheme comparison and optimization are conducted on the abandoned land site according to the ecological security evaluation index result. According to the ecological security evaluation and optimization method and system, the ecological security evaluation and optimization method and system which are high in operability are provided from the viewpoint of ecological safety according to the landscape ecological restoration technical requirements of the abandoned land site.

The invention relates to the field of nutritional food, in particular to nutritional food for people with an insulin resistance syndrome and a preparation method thereof. The nutritional food for people with the insulin resistance syndrome includes, by weight, 5-25 parts of soy protein isolate powder, 3-15 parts of inulin, 3-12 parts of oat fiber, 3-10 parts of konjac flour, 3-10 parts of wheat germ powder, 3-10 parts of polygonatum odoratum extract, 6-16 parts of oligopeptide, 2-13 parts of yeast powder, and 0.001-0.012 part of vitamin B family. The nutritional food for people with the insulin resistance syndrome has the advantages of having a reasonable ratio, having a synergistic effect to eliminate various resistance factors of insulin resistance with multiple factors to work together,and providing comprehensive nutrition for a human body to quickly reverse the insulin resistance.

A method and apparatus for measuring corneal resistance to deformation use an empirically derived function wherein an inward applanation pressure P1 and an outward applanation pressure P2 obtained during a corneal deformation cycle caused by a fluid pulse are separately weighted so as to minimize dependence of the calculated corneal resistance factor (CRF) on intraocular pressure. In one embodiment, the function is optimized, at least in part, to maximize statistical correlation between the calculated corneal resistance factor (CRF) and central corneal thickness.

The production method of edible protein by using plant leaf includes the following steps: using ethyl alcohol or propyl alcohol to remove nutrient-resistance factors of chlorophyll, alkaloid and saponin from plant leaf, pulverizing and sieving to obtain the invented leaf protein. Said method is safe and non-toxic, the yield rate of whole leaf protein can be up to above 80%, and the protein content in the product can be up to above 45%.

The invention relates to a steam foam compound flooding composition and a preparation method thereof. The composition mainly solves the problems that in the steam foam compound flooding oil extraction process in the prior art, a foaming agent precipitates when facing divalent ions, and formed foam has low plugging capability. The steam foam compound flooding composition comprises a long-chain polyether nitrogen containing compound, long-chain diaryl sulfonate, mineralized water and gas, and steam; the long chain polyether nitrogen containing compound and long-chain diaryl sulfonate are dissolved in mineralized water and are mixed with gas and steam in order to form foam, wherein the long-chain polyether nitrogen containing compound comprises the molecular general formula shown in the formula (I), and the long-chain diaryl sulfonate surfactant has the molecular general formula shown in the formula (II). The technical scheme can better solve the problem, in the condition that mineralization is 0-300000mg / L and temperature is 200 DEG C, formed foam resistance factor reaches 100, and the composition can be used in the steam foam compound flooding process.

The invention relates to a method for determining a typical daily load curve by using comprehensive energy system energy consumption big data. According to the method, the original energy consumptionhistorical data is subjected to standardized preprocessing, so that the influence caused by large order-of-magnitude difference of data participating in clustering analysis is eliminated, abnormal data generated by human and other non-resistance factors are eliminated, and the accuracy and reasonability of a result are ensured. The optimal clustering number is determined by adopting a double-indexmutual verification method of a contour coefficient method SILHOUETTE index and an elbow method SSE index, so that the phenomenon of non-optimal result caused by self-calculation characteristics of asingle index is avoided. Compared with a typical daily load curve selected by a traditional peak load-apportionment proportional method, the method for solving the typical daily load by using the data averaging processing in the classification cluster has the advantages that the classification characteristics of the obtained energy consumption data are closer to the actual energy consumption demand characteristics, and the load prediction is more representative.

The invention discloses a heat exchange and resistance calculation formula for a flat fin heat exchanger in an air side laminar flow state, which comprises the following steps of 1, establishing a finned tube model, and designing an orthogonal test working condition by taking the spacing, the thickness, the tube spacing, the tube row number, the inlet wind speed and the tube wall temperature of afin as the variable factors; and carrying out flow and heat transfer numerical calculation on different working conditions to obtain a change rule of the heat exchange amount and the flow resistance;2, on the basis of verifying a model calculation result, giving out a power function expression which takes the Reynolds number, the Pluronic number and the ratio of the fin spacing to the characteristic length as the independent variables and takes the Number of the heat exchange amount and the resistance factor of the flow resistance as the strain; and 3, fitting each coefficient value in the function relationship by adopting a least square method. The calculation formula can be used for calculating the heat exchange and the resistance of the flat-fin heat exchanger in a laminar flow state and determining the influence of the fin spacing on the performance of the flat-fin heat exchanger.

The invention discloses an ARCGIS-based rail transit station passenger flow attraction range defining method. The method includes calculating travelling speeds of different trip modes, the average travel distance of urban residents and transfer time between rail transit and other modes, and determining a direction attraction range, an indirect attraction range and a potential passenger flow attraction range; acquiring an irregular polygon by taking the trip modes, trip paths and trip time as constraint conditions for the direct attraction range and the indirection attraction range and introducingThiessen polygon in meteorology for division of a transit station potential attraction range; constructing a road network set by utilizing a geological information system and creating a passenger flow attraction zone by using reasonable distances between different attraction zones as a resistance factor; and introducing rail transit stations and solving the attraction ranges of the stations according to an enclosure rule of attraction range. By employing ARCGIS software and taking the trip modes, trip paths and trip time as constraint conditions, rail transit station passenger flow attraction ranges are determined accurately and rail transit passenger flow predication accuracy is ensured.

The invention belongs to the technical field of oil reservoir exploitation, and more specifically relates to a method used for evaluating particle size distribution of polymer microspheres, and a method used for evaluating oil reservoir adaptability of polymer microspheres. The method used for evaluating particle size distribution of polymer microspheres comprises following steps: 1, the number and the particle size of polymer microspheres in a certain area are calculated so as to obtain the largest particle size and the smallest particle size; 2, the obtained data is divided into a plurality of groups, and class interval width is calculated; 3, the limit of each group is calculated; 4, the frequency of the data of each group is calculated, and the frequency of each group is calculated; and 5, a microsphere particle size distribution curve is drawn. According to the method used for evaluating oil reservoir adaptability of polymer microspheres, evaluation of the oil reservoir adaptability of the polymer microspheres is carried out based on the matching relationship of the microsphere with pore size, core of different permeability is selected to measure the resistance coefficient and the residual resistance factor of the microspheres in passing through the core, if the microspheres are capable of entering core pores and performing transmission transporting, and the injection pressure increases firstly and then becomes stable, the geometric size of the microspheres matches the geometric size of the core pores, and the core permeability can be taken as the microsphere permeability extreme.

The invention provides an oil displacement system for medium permeability oil reservoirs. The oil displacement system includes an association polymer with a molecular weight of 182.3-3521 ten thousands, and in terms of mole percent, the association polymer is obtained by polymerization of acrylamide, 0.12%-9.2% of a hydrophobic monomer and 0-16.08% of a functional monomer. In the oil displacement system, the association polymer concentration is 400-3500mg / L. Compared with the prior art, a small amount of the hydrophobic monomer and functional monomer are introduced to a polymer molecular chain to obtain the association polymer, the association polymer can associate into a reversible spatial network structure with certain strength, thus greatly improving the system viscosity, and establishing a high resistance coefficient and high residual resistance factor, and because of the introduction of the functional monomer and increase of the spatial network structure strength, the system can have good temperature resistance and salt tolerance, shear resistance and aging stability, has a better effect of improving oil-water mobility ratio on medium permeability oil reservoirs, and improves the injected water sweep efficiency, thus better improving the recovery ratio of medium permeability oil reservoirs.

The invention relates to a calculation method of a regulating space of a slurry circulating system and a device thereof. The calculation method includes the following steps that according to the equipment size and resistance factor of each part in a slurry circulation pipeline, the loss of a pipeline pressure head is calculated; according to the minimum inlet pressure value to ensure the atomization effect of a nozzle, the minimum flow value of a pipeline is calculated; according to the state parameter of slurry at a pipeline inlet / outlet, the loss of the pipeline pressure head and the minimumflow value of the pipeline, and the minimum lift value of a pump is calculated; according to a performance curve of the pump at other rotation speeds, the minimum flow value of the pipeline and the minimum lift value of the pump, the minimum rotation speed value of the pump is obtained; the space between the minimum rotation speed value of the pump and a rated rotation speed value is a single pipeline regulating space; the sum of the pipeline regulating spaces is the regulating space of the slurry circulating system. According to a regulating device, a frequency converter or a speed regulating hydraulic coupler is additionally installed on the pump of the pipeline. The method can guide the transformation of a desulfurizing slurry circulating system, the safety and stability of operation of a wet desulfurizing system and the flexibility in regulating are improved, and the energy saving effect is achieved.

The invention discloses a method for increasing the cell phloroglucinol synthesis yield and application, and belongs to the technical field of genetic engineering. According to the method provided by the invention, a recombined cell co-expresses a phosphoketolase fxpk gene, a fructose 1,6-biphosphatase fbp gene and a poly-ketene anhydride synthetase phld gene and also expresses any one or two of a multiple-resistance-factor MarA gene and an acetyl-coenzyme a carboxylase ACCase gene. According to the method provided by the invention, a new phloroglucinol synthesis way is built in the recombined cell, so that the yield of phloroglucinol is greatly increased; as for a contrast group, the phloroglucinol yield is increased by 68.9 percent; meanwhile, by the method, emission of carbon dioxide in a phloroglucinol synthesis process is also reduced; the method has high environmental benefits.

The invention provides a test device for fracturing fluid distribution for multi-perforation cluster near wellbore resistance factor. The device includes a water tank, a water pump, a sand tank, a sand control valve, a throttle valve, a flow meter, a first perforation cluster unit, a second perforation cluster unit, a third perforation cluster unit, a first collecting barrel, a second collecting barrel, a third collecting barrel and a pressure acquisition system. According to the invention, the test work of different resistance can be realized by changing the size of a perforation channel anda steel pipe. After each experiment is finished, the relevant law is analyzed by measuring the liquid and the propping agent in the collecting barrels. According to the research result, the differenceof fracture extension pressure is quantitatively obtained base on to the reservoir property and the stress difference of the logging interpretation and the induced stress theory. The optimized cluster spacing, the variable perforation parameters, the different hole layout scheme and the fracturing fluid type are developed to counteract the difference of the flow resistance as much as possible, soas to improve the uniformity of the distribution of the liquid between the perforation clusters.