Patent | Date |
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Negative Pressure Shale Shaker Integrated With Negative Pressure Generation And Gas-liquid Separation App 20220307336 - HOU; Yongjun ;   et al. | 2022-09-29 |
Displacement Measuring Device And Speed Measuring Method Of Drilling Traction Robot App 20220307367 - ZHAO; Jianguo ;   et al. | 2022-09-29 |
Pressure-bearing plugging agent and preparation method and use thereof Grant 11,453,814 - Bai , et al. September 27, 2 | 2022-09-27 |
Gas Flow Rate Analysis And Prediction Method For Wellhead Choke Of Gas Well Based On Gaussian Process Regression App 20220290529 - JIANG; Youshi ;   et al. | 2022-09-15 |
Device And Method For Testing The Three-phase Saturation Of Oil, Gas And Water In High-temperature And High-pressure Planar Model App 20220290561 - GUO; Ping ;   et al. | 2022-09-15 |
Oil-based Drilling Fluid Composition, Oil-based Drilling Fluid And Preparation Method And Use Thereof App 20220290032 - BAI; Yang ;   et al. | 2022-09-15 |
Modified polyvinyl acetate and preparation method and use thereof and oil-based drilling fluid Grant 11,441,062 - Bai , et al. September 13, 2 | 2022-09-13 |
Drilling platform for amphibious operations Grant 11,441,357 - Zhang , et al. September 13, 2 | 2022-09-13 |
In situ exploitation-separation-backfilling integration apparatus used for natural gas hydrates Grant 11,434,727 - Tang , et al. September 6, 2 | 2022-09-06 |
Spherical Organic Nano Boron Crosslinker With Pamam Core And Preparation Method Thereof, And Gel Fracturing Fluid App 20220275269 - MAO; Jincheng ;   et al. | 2022-09-01 |
High-temperature and high-pressure microscopic visual flowing device and experimental method Grant 11,428,620 - Xiao , et al. August 30, 2 | 2022-08-30 |
Cavity Creation Tool By Crushing With Multi-stage Controllable Water Jet For Natural Gas Hydrate Development App 20220268132 - TANG; Yang ;   et al. | 2022-08-25 |
Pressure-bearing Plugging Agent And Preparation Method And Use Thereof App 20220267662 - BAI; Yang ;   et al. | 2022-08-25 |
Photocatalytic oil-water separation material and preparation method thereof Grant 11,413,609 - Liu , et al. August 16, 2 | 2022-08-16 |
Method for determining sand pumping parameters based on width distribution of fracture Grant 11,408,281 - Lu , et al. August 9, 2 | 2022-08-09 |
In Situ Exploitation-separation-backfilling Integration Apparatus Used For Natural Gas Hydrates App 20220243564 - TANG; Yang ;   et al. | 2022-08-04 |
Safety pipe loop and method for strain monitoring of mountainous pipelines Grant 11,402,194 - He , et al. August 2, 2 | 2022-08-02 |
Method of particle size distribution of particulate bridging lost circulation materials for fractured leakage Grant 11,397,839 - Wang , et al. July 26, 2 | 2022-07-26 |
Test device and method for top-of-the-line corrosion of high-temperature high-pressure wet gas pipeline Grant 11,397,147 - Deng , et al. July 26, 2 | 2022-07-26 |
Pressure-bearing plugging composition, pressure-bearing plugging slurry and preparation method and use thereof Grant 11,396,621 - Bai , et al. July 26, 2 | 2022-07-26 |
Method for producing heavy oil by generating solvents in situ in the reservoir Grant 11,391,128 - Jiang , et al. July 19, 2 | 2022-07-19 |
Dynamic fracture width calculation method for drilling fluid loss in fractured formation Grant 11,391,145 - Xu , et al. July 19, 2 | 2022-07-19 |
Emulsifer with high temperature resistance, low viscosity and low corrosiveness, and emulsified acid system comprising same Grant 11,377,589 - Yang , et al. July 5, 2 | 2022-07-05 |
Intelligent water invasion tracking and early warning method for water-gas reservoirs Grant 11,377,951 - Tan , et al. July 5, 2 | 2022-07-05 |
Rotary fatigue tester with complex loads Grant 11,378,501 - Zhang , et al. July 5, 2 | 2022-07-05 |
High-temperature And High-pressure Microscopic Visual Flowing Device And Experimental Method App 20220205896 - XIAO; Wenlian ;   et al. | 2022-06-30 |
Oil Extraction And Gas Production Method Capable Of In-situ Sand Control And Removal By Downhole Hydraulic Lift App 20220205347 - TANG; Yang ;   et al. | 2022-06-30 |
Integrated method for nitrogen-assisted carbon dioxide fracturing and development of shale oil reservoirs Grant 11,371,328 - Zhou , et al. June 28, 2 | 2022-06-28 |
Method for testing and extracting paleo-tectonic geostress based on rock core Grant 11,372,121 - Liang , et al. June 28, 2 | 2022-06-28 |
Multi-frequency acoustic velocity measurement device for core Grant 11,371,962 - Chen , et al. June 28, 2 | 2022-06-28 |
Mechanical Automatic Vertical Drilling Tool App 20220186599 - TIAN; Jialin ;   et al. | 2022-06-16 |
Multi-Function Drilling Tool App 20220186560 - TIAN; Jialin ;   et al. | 2022-06-16 |
Mechanical Rotary Steering Drilling Tool App 20220186563 - TIAN; Jialin ;   et al. | 2022-06-16 |
Photocatalytic Oil-water Separation Material And Preparation Method Thereof App 20220184590 - LIU; Yucheng ;   et al. | 2022-06-16 |
Integrated Method For Nitrogen-assisted Carbon Dioxide Fracturing And Development Of Shale Oil Reservoirs App 20220186595 - ZHOU; Xiang ;   et al. | 2022-06-16 |
Method For Predicting And Optimizing Penetration Rate In Oil And Gas Drilling Based On Cart Algorithm App 20220188648 - Shi; Xiangchao ;   et al. | 2022-06-16 |
Double-capillary viscometer for measuring viscosity of acid natural gas Grant 11,360,013 - Bian , et al. June 14, 2 | 2022-06-14 |
Self-generating smart glass Grant 11,362,617 - Yu , et al. June 14, 2 | 2022-06-14 |
Method And System For Predicting Production Of Fractured Horizontal Well In Shale Gas Reservoir App 20220178252 - HU; Shuyong ;   et al. | 2022-06-09 |
Safety Pipe Loop And Method For Strain Monitoring Of Mountainous Pipelines App 20220170730 - HE; Tengjiao ;   et al. | 2022-06-02 |
3d In-situ Characterization Method For Heterogeneity In Generating And Reserving Performances Of Shale App 20220170366 - Ou; Chenghua ;   et al. | 2022-06-02 |
Oil well cement slurry high-temperature suspension stabilizer prepared from oil-based shale drilling cuttings Grant 11,345,844 - Cheng , et al. May 31, 2 | 2022-05-31 |
Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof Grant 11,345,841 - Bai , et al. May 31, 2 | 2022-05-31 |
Integrated Piling Tool with Continuous Drilling and Circulation Pouring App 20220162919 - TIAN; Jialin ;   et al. | 2022-05-26 |
Tunnel toxic-and-harmful-gas deep-hole detection device and method Grant 11,340,203 - Su , et al. May 24, 2 | 2022-05-24 |
Lignocellulose nanofibril material, stable foam system based thereon, preparation method and application thereof Grant 11,339,254 - Wei , et al. May 24, 2 | 2022-05-24 |
Dynamic Fracture Width Calculation Method For Drilling Fluid Loss In Fractured Formation App 20220136387 - XU; Chengyuan ;   et al. | 2022-05-05 |
Natural Gas Diffusion Coefficient Measurement Auxiliary Device Based On Hand-operated Lifting Device App 20220136948 - Hu; Shuyong ;   et al. | 2022-05-05 |
Rotary downhole cavitation generator Grant 11,319,789 - Gou , et al. May 3, 2 | 2022-05-03 |
Method and system for determining single-well dynamic reserve and recoverable reserve of gas-drive reservoir Grant 11,320,564 - Hu , et al. May 3, 2 | 2022-05-03 |
Methods For Preparing And Applying A Nano Emulsifier App 20220127517 - PU; Wanfen ;   et al. | 2022-04-28 |
Device and method for evaluating fracture initiation and propagation, and stress sensitivity of propped fracture Grant 11,313,775 - Li , et al. April 26, 2 | 2022-04-26 |
Method for injecting non-condensable gas or in-situ combustion to recover remaining oil in a heavy oil reservoir with bottom water Grant 11,306,571 - Jiang , et al. April 19, 2 | 2022-04-19 |
Device and method for swinging power generation and vibration suppression by using arc-shaped wing plates with rough surfaces Grant 11,306,695 - Zhu , et al. April 19, 2 | 2022-04-19 |
Comprehensive geological-engineering classification evaluation method for low-permeability reservoirs App 20220106876 - Xiong; Jian ;   et al. | 2022-04-07 |
Method And Test System For Determining Sand Pumping Parameters Based On Width Distribution Of Fracture App 20220090495 - Lu; Qianli ;   et al. | 2022-03-24 |
Lubricating Element For Drag Reduction In Production And Transportation Of Water-cut Heavy Oil In Wellbore App 20220090480 - JING; Jiaqiang ;   et al. | 2022-03-24 |
Thermoplastic Elastomer For Profile Control And Water Shutoff And Method For Preparing Same App 20220089935 - Xue; Yan ;   et al. | 2022-03-24 |
Preparation method of amphoteric two-dimensional nanosheet Grant 11,279,621 - Liu , et al. March 22, 2 | 2022-03-22 |
Method for evaluating and preventing creep damage to conductivity of hydraulic fracture in gas reservoirs Grant 11,280,172 - Peng , et al. March 22, 2 | 2022-03-22 |
Free slant platform Grant 11,268,569 - Hu , et al. March 8, 2 | 2022-03-08 |
Insatiability emulsification and viscosity system with controlled viscosity and its application in water-driven reservoir Grant 11,268,013 - Liu , et al. March 8, 2 | 2022-03-08 |
Preparation method of supercritical carbon dioxide thickener for tight oil and gas reservoir Grant 11,261,373 - Zhou , et al. March 1, 2 | 2022-03-01 |
Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor Grant 11,255,745 - Liu , et al. February 22, 2 | 2022-02-22 |
Injection method for solid retarded acid Grant 11,254,859 - Wang , et al. February 22, 2 | 2022-02-22 |
Method for evaluating and preventing creep damage to conductivity of hydraulic fracture in gas reservoirs App 20220049591 - Peng; Yu ;   et al. | 2022-02-17 |
Shale gas well dynamic production allocating method App 20220049604 - Hu; Shuyong ;   et al. | 2022-02-17 |
Reservoir Isolation Valve For Secondary Completion App 20220049578 - DING; Liangliang ;   et al. | 2022-02-17 |
Cross-linked plugging agent stimulated by high density brine and preparing method thereof App 20220041916 - Jia; Hu ;   et al. | 2022-02-10 |
Bullhead-shaped grooved diversion jet and empennage swing vibration suppression device and method Grant 11,242,715 - Zhu , et al. February 8, 2 | 2022-02-08 |
Method for continuous downhole cooling of high-temperature drilling fluid Grant 11,236,584 - Zhang , et al. February 1, 2 | 2022-02-01 |
Region-growing motion tracking method based on bayesian inference and polynomial fitting Grant 11,238,599 - Peng , et al. February 1, 2 | 2022-02-01 |
Safety drilling system and method for preventing collapse of water-sensitive formation in upper part of high-pressure saltwater layer Grant 11,236,562 - Li , et al. February 1, 2 | 2022-02-01 |
Drilling fluid for enhancing stratum pressure bearing capacity and preparation method and method of using thereof Grant 11,225,594 - Bai , et al. January 18, 2 | 2022-01-18 |
Polymer-monodispersed nano-microspheres for deep profile control and flooding, and preparation method thereof Grant 11,225,597 - Liu , et al. January 18, 2 | 2022-01-18 |
System And Method For Pumping Lubricant In Gas Pipeline App 20220010925 - ZHAO; Jianguo ;   et al. | 2022-01-13 |
Fluid-solid coupling numerical simulation method for evaluating effect of wellbore strengthening in fractured formation App 20220012389 - Liu; Yang ;   et al. | 2022-01-13 |
Method For Improving Recovery Ratio Of Braided Well Pattern Of Hugely Thick Or Multi-layer Oil And Gas Reservoir App 20220010666 - PENG; Xiaolong ;   et al. | 2022-01-13 |
Intelligent water invasion tracking and early warning method for water-gas reservoirs App 20220010674 - Tan; Xiaohua ;   et al. | 2022-01-13 |
Rotary Downhole Cavitation Generator App 20220010665 - GOU; Ruyi ;   et al. | 2022-01-13 |
Metal-doped Amorphous Carbon Nitride Photocatalytic Material And Preparation Method Thereof App 20210402382 - Zhou; Ying ;   et al. | 2021-12-30 |
Fine Identification Method Of Tight Reservoir Fracture Based On Conventional Logging Data App 20210404331 - LIU; Hongqi ;   et al. | 2021-12-30 |
Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation Grant 11,199,050 - Wang , et al. December 14, 2 | 2021-12-14 |
Method for experimentally determining influence of acid liquor on Young's modulus of compact carbonate rock Grant 11,199,483 - Gou , et al. December 14, 2 | 2021-12-14 |
Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate Grant 11,193,333 - Tang , et al. December 7, 2 | 2021-12-07 |
Weighing Structure And Adsorbed Gas Measuring Equipment App 20210372901 - Hu; Shuyong ;   et al. | 2021-12-02 |
Intelligent water-control and gas-diversion particle for water-gas reservoirs and preparation method thereof Grant 11,186,766 - Tan , et al. November 30, 2 | 2021-11-30 |
Dynamic simulation method of circulating temperature variation in RMR subsea pump mud-lift drilling system Grant 11,188,694 - Li , et al. November 30, 2 | 2021-11-30 |
Automatic cleaning device for suction port of electric submersible pump Grant 11,187,250 - Gou , et al. November 30, 2 | 2021-11-30 |
Region-growing Motion Tracking Method Based on Bayesian Inference and Polynomial Fitting App 20210358138 - Peng; Bo ;   et al. | 2021-11-18 |
Carbonate reservoir filtration-loss self-reducing acid Grant 11,174,425 - Chen , et al. November 16, 2 | 2021-11-16 |
Process for preparing Mannich base quaternary ammonium salt high-temperature resistant corrosion inhibitor and applications thereof Grant 11,161,811 - Wang , et al. November 2, 2 | 2021-11-02 |
Nanometer plugging water-based drilling fluid and preparation method and use thereof Grant 11,162,010 - Bai , et al. November 2, 2 | 2021-11-02 |
Multi-slug staged method for plugging fractured formation Grant 11,162,323 - Li , et al. November 2, 2 | 2021-11-02 |
Optimization Method For Dense Cutting, Temporary Plugging And Fracturing In Shale Horizontal Well Stage App 20210334434 - YANG; Zhaozhong ;   et al. | 2021-10-28 |
Natural gas hydrate solid-state fluidization mining method and system under underbalanced positive circulation condition Grant 11,156,064 - Zhao , et al. October 26, 2 | 2021-10-26 |
Inspection system and method with variable-diameter traveling robot for inspection of natural gas pipeline Grant 11,150,199 - Chen , et al. October 19, 2 | 2021-10-19 |
Automatic cleaning device for suction port of electric submersible pump App 20210301835 - Gou; Ruyi ;   et al. | 2021-09-30 |
Intelligent water-control and gas-diversion particle for water-gas reservoirs and preparation method thereof App 20210301196 - Tan; Xiaohua ;   et al. | 2021-09-30 |
Testing method for evaluating the effect of CO2 reaction rate of acid rock plate Grant 11,130,108 - Guo , et al. September 28, 2 | 2021-09-28 |
Downhole failure analysis and processing method based on the particle diameter distribution of cuttings Grant 11,125,071 - Yin , et al. September 21, 2 | 2021-09-21 |
Channel fracturing method with alternative injection of conventional and capsule-type soluble proppants Grant 11,125,068 - Jiang , et al. September 21, 2 | 2021-09-21 |
Mine application method for in-situ nano-microspheres to increase crude oil recovery rate Grant 11,118,102 - Pu , et al. September 14, 2 | 2021-09-14 |
Pressure oscillation simulation device of deep coalbed methane and method thereof Grant 11,120,710 - Li , et al. September 14, 2 | 2021-09-14 |
Method for simulating the discontinuity of the hydraulic fracture wall in fractured reservoirs Grant 11,118,450 - Zhao , et al. September 14, 2 | 2021-09-14 |
Inspection System And Method With Variable-diameter Traveling Robot For Inspection Of Natural Gas Pipeline App 20210278349 - CHEN; Zhen ;   et al. | 2021-09-09 |
Optimization method for high-efficiently placing proppants in hydraulic fracturing treatment App 20210270114 - Chen; Xiyu ;   et al. | 2021-09-02 |
Systems and methods for determining in-situ stresses based on orthotropic rock physics model Grant 11,106,843 - Ma , et al. August 31, 2 | 2021-08-31 |
Intermediate Gas Concentration-regulating Piston Pressure Device For High-temperature Autoclave And Gas Distribution Method App 20210260547 - Zhang; Zhi ;   et al. | 2021-08-26 |
Method For Injecting Non-condensable Gas Or In-situ Combustion To Recover Remaining Oil In A Heavy Oil Reservoir With Bottom Water App 20210262331 - JIANG; Qi ;   et al. | 2021-08-26 |
Bullhead-shaped Grooved Diversion Jet And Empennage Swing Vibration Suppression Device And Method App 20210246734 - Zhu; Hongjun ;   et al. | 2021-08-12 |
Injection Method For Solid Retarded Acid App 20210238473 - WANG; Shibin ;   et al. | 2021-08-05 |
Device And Method For Swinging Power Generation And Vibration Suppression By Using Arc-shaped Wing Plates With Rough Surfaces App 20210239087 - Zhu; Hongjun ;   et al. | 2021-08-05 |
Sealing integrity evaluation device for high-temperature and high-pressure casing-cement ring-formation and method thereof App 20210231520 - Zhang; Zhi ;   et al. | 2021-07-29 |
channel fracturing method with alternative injection of conventional and capsule-type soluble proppants App 20210222537 - Jiang; Youshi ;   et al. | 2021-07-22 |
Safety Drilling System And Method For Preventing Collapse Of Water-sensitive Formation In Upper Part Of High-pressure Saltwater Layer App 20210222528 - LI; Qian ;   et al. | 2021-07-22 |
Emulsifer With High Temperature Resistance, Low Viscosity And Low Corrosiveness, And Emulsified Acid System Comprising Same App 20210222057 - YANG; Xiaojiang ;   et al. | 2021-07-22 |
Physical simulation and calibration device and method for formation pressure testing Grant 11,067,492 - Ma , et al. July 20, 2 | 2021-07-20 |
Dynamic Simulation Method of Circulating Temperature Variation in RMR Subsea Pump Mud-lift Drilling System App 20210216689 - Li; Xin ;   et al. | 2021-07-15 |
Lignocellulose Nanofibril Material, Stable Foam System Based Thereon, Preparation Method And Application Thereof App 20210214509 - WEI; Bing ;   et al. | 2021-07-15 |
Testing device and method for simulating the flowback in the shut-in period of fractured wells Grant 11,054,405 - Hu , et al. July 6, 2 | 2021-07-06 |
Strain and acoustic wave testing device and method for high-temperature rock sample Grant 11,054,351 - Li , et al. July 6, 2 | 2021-07-06 |
Hydrate solid-state fluidization mining method and system under underbalanced reverse circulation condition Grant 11,053,779 - Zhao , et al. July 6, 2 | 2021-07-06 |
Test Device For Simulating Longitudinal-lateral-torsional Coupled Nonlinear Vibration Of Drill String Of Deepwater Riserless Drilling And Method Therefor App 20210199535 - LIU; Jun ;   et al. | 2021-07-01 |
Irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof Grant 11,047,789 - Guo , et al. June 29, 2 | 2021-06-29 |
Mine Application Method For In-situ Nano-microspheres To Increase Crude Oil Recovery Rate App 20210189221 - Pu; Wanfen ;   et al. | 2021-06-24 |
Polymer-monodispersed Nano-microspheres For Deep Profile Control And Flooding, And Preparation Method Thereof App 20210189220 - Liu; Rui ;   et al. | 2021-06-24 |
Systems And Methods For Determining In-situ Stresses Based On Orthotropic Rock Physics Model App 20210173976 - MA; Tianshou ;   et al. | 2021-06-10 |
Method for experimentally determining the conductivity of unpropped fracture in hydraulic fracturing of shale reservoir Grant 11,028,689 - Zhao , et al. June 8, 2 | 2021-06-08 |
Nanometer Plugging Water-based Drilling Fluid And Preparation Method And Use Thereof App 20210163807 - Bai; Yang ;   et al. | 2021-06-03 |
In-situ Emulsification And Viscosity Increase System With High Phase Change Point And Application Thereof In Water-flooding Oil Reservoir App 20210163814 - PU; Wanfen ;   et al. | 2021-06-03 |
Ultrasonic Wellbore Anti-collision Monitoring System And Monitoring Method App 20210164339 - YIN; Hu ;   et al. | 2021-06-03 |
Quantitative scoring and optimization method of drilling and completion loss-control material Grant 11,017,134 - Xu , et al. May 25, 2 | 2021-05-25 |
Method of calculating etching profile of acid-etched fracture system considering complex filtration media Grant 11,015,924 - Guo , et al. May 25, 2 | 2021-05-25 |
Particulate profile control agent self-adaptive to size of formation pore throat and preparation method thereof Grant 11,015,109 - Jin , et al. May 25, 2 | 2021-05-25 |
Method for predicting the optimal shut-in duration by coupling fluid flow and geological stress Grant 11,015,444 - Hu , et al. May 25, 2 | 2021-05-25 |
Simulation device and simulation method for gas reservoir exploitation App 20210150933 - Hu; Shuyong ;   et al. | 2021-05-20 |
Ultrasonic wellbore anti-collision monitoring system and monitoring method Grant 11,008,851 - Yin , et al. May 18, 2 | 2021-05-18 |
Plate holder for simulating flowing of multiphase fluids in fractures and an operating method thereof Grant 11,009,442 - Gou , et al. May 18, 2 | 2021-05-18 |
Method for dynamic imbibition capacity of shale Grant 11,009,443 - Guo , et al. May 18, 2 | 2021-05-18 |
Quantitative Scoring And Optimization Method Of Drilling And Completion Loss-control Material App 20210141984 - Xu; Chengyuan ;   et al. | 2021-05-13 |
Combined Crushing Super-variable-diameter Drill Bit For Natural Gas Hydrate Exploitation App 20210140244 - WANG; Guorong ;   et al. | 2021-05-13 |
Automatic Jet Breaking Tool For Solid Fluidization Exploitation Of Natural Gas Hydrate App 20210140243 - TANG; Yang ;   et al. | 2021-05-13 |
Method and system for obtaining micro-nano level fracture model and evaluating plugging performance of drilling fluid Grant 10,989,576 - Bai , et al. April 27, 2 | 2021-04-27 |
Particulate Profile Control Agent Self-adaptive To Size Of Formation Pore Throat And Preparation Method Thereof App 20210115317 - Jin; Fayang ;   et al. | 2021-04-22 |
Parallel Core Simulation Device For Commingling Production In Low-permeability Gas Reservoirs App 20210116352 - YUE; Ping ;   et al. | 2021-04-22 |
Insatiability Emulsification And Viscosity System With Controlled Viscosity And Its Application In Water-driven Reservoir App 20210115324 - LIU; Rui ;   et al. | 2021-04-22 |
Cross-linked plugging agent stimulated by high density brine and preparing method thereof App 20210108122 - Jia; Hu ;   et al. | 2021-04-15 |
Fixed Cutting Structure-composite Cone Drill Bit App 20210108465 - KUANG; Yuchun ;   et al. | 2021-04-15 |
Well cementation working solution prepared from red mud, slag and waste drilling fluids Grant 10,975,284 - Cheng , et al. April 13, 2 | 2021-04-13 |
Circulating system and a method for continuous downhole cooling of high-temperature drilling fluid App 20210102441 - Zhang; Jie ;   et al. | 2021-04-08 |
Rotating cutter single cone bit Grant 10,961,784 - Chen , et al. March 30, 2 | 2021-03-30 |
Selection method of loss control materials for lost circulation control in fractured reservoirs based on photoelastic experiments Grant 10,962,354 - Xu , et al. March 30, 2 | 2021-03-30 |
Method For Measuring Micro-scale Strength And Residual Strength Of Brittle Rock App 20210088428 - SONG; Rui ;   et al. | 2021-03-25 |
Device and Method for Evaluating Fracture Initiation and Propagation, and Stress Sensitivity of Propped Fracture App 20210088429 - Li; Yongming ;   et al. | 2021-03-25 |
Process For Preparing Metal-chelate Retarder By Sol-gel Method App 20210079288 - CHENG; Xiaowei ;   et al. | 2021-03-18 |
Ultra-long Stroke Multi-cylinder Reciprocating Pump App 20210079901 - HOU; Yongjun ;   et al. | 2021-03-18 |
Experimental Device And Experimental Method For Natural Gas Hydrate Solid-state Fluidized Mining And Crushing App 20210079762 - WANG; Guorong ;   et al. | 2021-03-18 |
Method for establishing chart for designing mechanical properties of cement stones in large-scale fracturing oil well App 20210082543 - Yin; Hu ;   et al. | 2021-03-18 |
Method for interpreting and evaluating production profile of multi-layer gas reservoir based on downhole distributed temperature monitoring App 20210071518 - Wei; Mingqiang ;   et al. | 2021-03-11 |
Experimental device for carbon dioxide imbition, diffusion and oil discharge in tight oil reservoir Grant 10,942,105 - Hu , et al. March 9, 2 | 2021-03-09 |
Method And Device For Characterizing Microbial Carbonate Pores, And Server App 20210063298A1 - | 2021-03-04 |
Experimental device and experimental method for testing the lubricity in horizontal well drilling with a cuttings bed taken into consideration Grant 10,928,300 - Su , et al. February 23, 2 | 2021-02-23 |
Digital imaging technology-based method for calculating relative permeability of tight core App 20210047925 - Duan; Yonggang ;   et al. | 2021-02-18 |
Method of calculating etching profile of acid-etched fracture system considering complex filtration media App 20210048293 - Guo; Jianchun ;   et al. | 2021-02-18 |
Method For Determining The Characteristic Parameters Of Stimulation Intervals Of Multi-stage Fractured Horizontal Well In Unconventional Oil And Gas Reservoir App 20210048547 - NIE; Renshi ;   et al. | 2021-02-18 |
Tunnel Toxic-and-harmful-gas Deep-hole Detection Device And Method App 20210048419 - Su; Peidong ;   et al. | 2021-02-18 |
Testing device and method for floating rate of floating agent for fracture height control Grant 10,921,228 - Jiang , et al. February 16, 2 | 2021-02-16 |
Thermosensitive self-plugging bentonite and preparation method thereof and water-based drilling fluid Grant 10,920,123 - Pu , et al. February 16, 2 | 2021-02-16 |
Method For Preparing Low-density Proppant By Taking Oil-based Mud Wastes As Raw Materials App 20210040379 - Yang; Zhaozhong ;   et al. | 2021-02-11 |
Downhole Failure Analysis and Processing Method and Device Based on the Partical Diameter Distribution of Cuttings App 20210040835 - Yin; Hu ;   et al. | 2021-02-11 |
Systems And Methods For Combined Physical And Numerical Simulation Of Subterranean Characteristics App 20210041597 - Hongjun; Wang ;   et al. | 2021-02-11 |
Method for experimentally determining conductivity distribution of acid-fractured fracture of carbonate rock oil and gas reservoir Grant 10,908,317 - Gou , et al. February 2, 2 | 2021-02-02 |
Experimental Device for Measuring Diffusion Coefficient of Natural Gas App 20210025801 - Hu; Shuyong ;   et al. | 2021-01-28 |
Carbonate Reservoir Filtration-loss Self-reducing Acid App 20210017445 - CHEN; Weiyu ;   et al. | 2021-01-21 |
Testing Device And Method For Floating Rate Of Floating Agent For Fracture Height Control App 20210018415 - Jiang; Youshi ;   et al. | 2021-01-21 |
Recyclable clean fracturing fluid thickener, preparation method and recovery method thereof, and high-temperature resistant clean fracturing fluid Grant 10,894,761 - Yang , et al. January 19, 2 | 2021-01-19 |
Process for preparing dibenzylamine quaternary ammonium salt high-temperature resistant corrosion inhibitor and applications thereof Grant 10,889,748 - Li , et al. January 12, 2 | 2021-01-12 |
Plugging agent with temperature-resistant, salt-resistant and high-expansion for plugging large fractures and preparation method thereof Grant 10,889,745 - Jin , et al. January 12, 2 | 2021-01-12 |
Method For Calculating Single-well Controlled Reserve Of Low-permeability/tight Gas Reservoir And Analyzing Residual Gas Thereof App 20210002999 - Yue; Ping ;   et al. | 2021-01-07 |
Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load Grant 10,876,945 - Cheng , et al. December 29, 2 | 2020-12-29 |
Tri-cationic viscoelastic surfactant, preparation method and application thereof and clean fracturing fluid Grant 10,870,790 - Mao , et al. December 22, 2 | 2020-12-22 |
Oil Well Cement Slurry High-temperature Suspension Stabilizer Prepared From Oil-based Shale Drilling Cuttings App 20200392393 - Cheng; Xiaowei ;   et al. | 2020-12-17 |
Multi-slug Staged Plugging Method Applicable To Fractured Formation App 20200392809 - LI; Gao ;   et al. | 2020-12-17 |
method for experimentally determining the conductivity of unpropped fracture in hydraulic fracturing of shale reservoir App 20200392840 - Zhao; Zhihong ;   et al. | 2020-12-17 |
Design Method Of Particle Size Distribution Of Particulate Bridging Lost Circulation Materials For Fractured Leakage App 20200394350 - WANG; Gui ;   et al. | 2020-12-17 |
Multi-functional weighting agent for drilling fluid and preparation method thereof, and water-based drilling fluid and use thereof Grant 10,865,337 - Bai , et al. December 15, 2 | 2020-12-15 |
Preparation Method of Supercritical Carbon Dioxide Thickener for Tight Oil and Gas Reservoir App 20200385631 - Zhou; Ming ;   et al. | 2020-12-10 |
Optimized Design Method For Temporary Blocking Agent To Promote Uniform Expansion Of Fractures Produced By Fracturing In Horizontal Wells App 20200386081 - CHEN; Xiyu ;   et al. | 2020-12-10 |
Fracturing Fluid Flow-back Simulation Method For Fractured Horizontal Well In Shale Gas Reservoir App 20200387650 - LI; Yongming ;   et al. | 2020-12-10 |
Single Horizontal Well Gravity Oil Drainage Production Device And Method Of Using Downhole Steam Generation App 20200370402 - JIANG; Qi ;   et al. | 2020-11-26 |
Multi-Functional Weighting Agent for Drilling Fluid and Preparation Method Thereof, and Water-Based Drilling Fluid and Use Thereof App 20200369936 - BAI; Yang ;   et al. | 2020-11-26 |
Method for acquiring opening timing of natural fracture under in-slit temporary plugging condition Grant 10,844,710 - Lu , et al. November 24, 2 | 2020-11-24 |
Intelligent Throttled Well-killing Method And Device For Overflow In High-temperature And High-pressure Deep Drilling App 20200362650 - LI; Qian ;   et al. | 2020-11-19 |
Recyclable Clean Fracturing Fluid Thickener, Preparation Method And Recovery Method Thereof, And High-temperature Resistant Clean Fracturing Fluid App 20200354310 - YANG; Xiaojiang ;   et al. | 2020-11-12 |
Method For Acquiring Opening Timing Of Natural Fracture Under In-slit Temporary Plugging Condition App 20200355069 - Lu; Cong ;   et al. | 2020-11-12 |
Method for dynamic imbibition capacity of shale App 20200355598 - Guo; Jianchun ;   et al. | 2020-11-12 |
Micro-nanometer plugging anti-collapse drilling fluid and preparation method and use thereof Grant 10,829,679 - Bai , et al. November 10, 2 | 2020-11-10 |
Modified nano-silica plugging agent, water-based drilling fluid, and preparation method and use thereof Grant 10,829,681 - Bai , et al. November 10, 2 | 2020-11-10 |
A method for simulating the discontinuity of the hydraulic fracture wall in fractured reservoirs App 20200347721 - Zhao; Jinzhou ;   et al. | 2020-11-05 |
Microorganism curing anti-seepage device based on capsule transmission and control App 20200347724 - Guo; Liang ;   et al. | 2020-11-05 |
Method for evaluating the longitudinal deformation of proppant pack Grant 10,823,646 - Guo , et al. November 3, 2 | 2020-11-03 |
Split roller cone and PDC composite drill bit Grant 10,822,881 - Tian , et al. November 3, 2 | 2020-11-03 |
Device and method for solid-state fluidized mining of natural gas hydrates in shallow seabed Grant 10,822,927 - Tang , et al. November 3, 2 | 2020-11-03 |
Process For Preparing Dibenzylamine Quaternary Ammonium Salt High-temperature Resistant Corrosion Inhibitor And Applications Thereof App 20200339865 - LI; Yongming ;   et al. | 2020-10-29 |
Method For Evaluating Difference In Gas Injection Effect Of Gas Injection Wells In Carbonate Reservoir App 20200340356 - HU; Yisheng ;   et al. | 2020-10-29 |
Testing device and method for simulating the flowback in the shut-in period of fractured wells App 20200333314 - Hu; Yongquan ;   et al. | 2020-10-22 |
Method for predicting the optimal shut-in duration by coupling fluid flow and geological stress App 20200332655 - Hu; Yongquan ;   et al. | 2020-10-22 |
Strain And Acoustic Wave Testing Device And Method For High-temperature Rock Sample App 20200333221 - LI; Gao ;   et al. | 2020-10-22 |
Process For Preparing Mannich Base Quaternary Ammonium Salt High-temperature Resistant Corrosion Inhibitor And Applications Thereof App 20200331856 - WANG; Dingli ;   et al. | 2020-10-22 |
A Quadripolymer Based On Host-guest Interaction And Preparation Process Thereof App 20200332043 - REN; Qiang ;   et al. | 2020-10-22 |
Experimental apparatus and method for simulating transport of sand-carrying fluid in fracturing fractures Grant 10,801,312 - Hu , et al. October 13, 2 | 2020-10-13 |
Multi-functional multi-field coupling seepage experiment device and testing method thereof Grant 10,801,942 - Ou , et al. October 13, 2 | 2020-10-13 |
Mineshaft-stratum fracture coupled flowing simulation experiment device and method Grant 10,794,180 - Li , et al. October 6, 2 | 2020-10-06 |
Method for preparing artificial core to simulate fluvial sedimentary reservoir App 20200300054 - Zhu; Shanshan ;   et al. | 2020-09-24 |
Natural Gas Hydrate Solid-state Fluidization Mining Method And System Under Underbalanced Positive Circulation Condition App 20200300066 - ZHAO; Jinzhou ;   et al. | 2020-09-24 |
Physical Simulation And Calibration Device And Method For Formation Pressure Testing App 20200300746 - MA; Tianshou ;   et al. | 2020-09-24 |
Method For Injecting Non-condensable Gas Or In-situ Combustion To Recover Remaining Oil In A Heavy Oil Reservoir With Bottom Water App 20200300069 - JIANG; Qi ;   et al. | 2020-09-24 |
Calculation method for dynamic fluid loss of acid-etched fracture considering wormhole propagation App 20200300082 - Liu; Pingli ;   et al. | 2020-09-24 |
Cross-scale wide-spectrum particle size plugging formula granularity analysis method Grant 10,782,220 - Xu , et al. Sept | 2020-09-22 |
Crushing System For Large-size Natural Gas Hydrate Rock Samples App 20200290052 - ZHAO; Jinzhou ;   et al. | 2020-09-17 |
Test Device And Method For Top-of-the-line Corrosion Of High-temperature High-pressure Wet Gas Pipeline App 20200292440 - DENG; Kuanhai ;   et al. | 2020-09-17 |
Hydrate Solid-state Fluidization Mining Method And System Under Underbalanced Reverse Circulation Condition App 20200291754 - ZHAO; Jinzhou ;   et al. | 2020-09-17 |
Thermosensitive Self-plugging Bentonite and Preparation Method Thereof and Water-based Drilling Fluid App 20200283673 - PU; Xiaolin ;   et al. | 2020-09-10 |
Tri-cationic Viscoelastic Surfactant, Preparation Method And Application Thereof And Clean Fracturing Fluid App 20200283676 - MAO; Jincheng ;   et al. | 2020-09-10 |
Testing device and method for evaluating the effect of CO2 on the reaction rate of acid rock plate App 20200282373 - Guo; Jianchun ;   et al. | 2020-09-10 |
Plate holder for simulating flowing of multiphase fluids in fractures and an operating method thereof App 20200284712 - Gou; Bo ;   et al. | 2020-09-10 |
Self-generating Smart Glass App 20200287503 - YU; Hua ;   et al. | 2020-09-10 |
Direct method for manufacturing large model fractured core and maintaining original oil-water saturation Grant 10,746,638 - Guo , et al. A | 2020-08-18 |
Method For Intelligently Determining Hydrate Drilling And Production Risks Based On Fuzzy Judgment App 20200240243 - LI; Haitao ;   et al. | 2020-07-30 |
Experimental Apparatus And Method For Simulating Transport Of Sand-carrying Fluid In Fracturing Fractures App 20200240252 - HU; Yongquan ;   et al. | 2020-07-30 |
Method For Characterizing Complexity Of Rock Fracture Based On Fractal Dimension And Device Thereof App 20200240251 - Lu; Cong ;   et al. | 2020-07-30 |
Non-contact real-time stress monitoring method for buried pipeline Grant 10724906 - | 2020-07-28 |
Rotary fatigue tester with complex loads App 20200225135 - Zhang; Zhi ;   et al. | 2020-07-16 |
Completions for triggering fracture networks in shale wells Grant 10711585 - | 2020-07-14 |
Experimental Device And Experimental Method For Testing The Lubricity In Horizontal Well Drilling With A Cuttings Bed Taken Into App 20200217780 - SU; Junlin ;   et al. | 2020-07-09 |
Rotating Cutter Single Cone Bit App 20200217141A1 - | 2020-07-09 |
Mineshaft-stratum Fracture Coupled Flowing Simulation Experiment Device And Method App 20200217193 - LI; Gao ;   et al. | 2020-07-09 |
Automatic diagnosis method for wellhead pressure curve of hydraulic fracturing in shale gas horizontal well Grant 10689972 - | 2020-06-23 |
Pipeline robot capable of steering actively Grant 10690281 - | 2020-06-23 |
Method for optimizing perforation parameters to maintain uniform fracture growth in multi-stage hydraulic fracturing of horizontal well Grant 10677961 - | 2020-06-09 |
Device and method for solid-state fluidization mining of seabed shallow layer non-diagenetic natural gas hydrates Grant 10655436 - | 2020-05-19 |
Shale Gas Enrichment And Accumulation Classification Method App 20200131901 - OU; Chenghua ;   et al. | 2020-04-30 |
Ultra-high temperature fracturing fluid Grant 10633576 - | 2020-04-28 |
Method For Experimentally Determining Influence Of Acid Liquor On Young's Modulus Of Compact Carbonate Rock App 20200124511 - GOU; Bo ;   et al. | 2020-04-23 |
Intelligent switching valve for reservoir reformation and production monitoring and control and construction method therefor Grant 10626704 - | 2020-04-21 |
Method for predicting reservoir reform volume after vertical well volume fracturing of low-permeability oil/gas reservoir Grant 10627543 - | 2020-04-21 |
Double-capillary Viscometer For Measuring Viscosity Of Acid Natural Gas App 20200110016A1 - | 2020-04-09 |
Mechanics experiment system and method for perforated string in underground perforating blasting of oil-gas well Grant 10590708 - | 2020-03-17 |
Well Cementation Working Solution Prepared From Red Mud, Slag And Waste Drilling Fluids App 20200071594A1 - | 2020-03-05 |
Device And Method For Solid-state Fluidization Mining Of Seabed Shallow Layer Non-diagenetic Natural Gas Hydrates App 20200072028A1 - | 2020-03-05 |
Surface-active Two-tailed Hydrophobic Associated Polymer And Preparation Method Thereof App 20200062881A1 - | 2020-02-27 |
Ultra-high Temperature Fracturing Fluid App 20200063020A1 - | 2020-02-27 |
Surface-active two-tailed hydrophobic associated polymer and preparation method thereof Grant 10570239 - | 2020-02-25 |
Device And Method For Solid-state Fluidized Mining Of Natural Gas Hydrates In Shallow Seabed App 20200040710A1 - | 2020-02-06 |
Downhole automatic connection device and method for oil pipe internal communication cable used for intelligent layered water injection Grant 10550647 - | 2020-02-04 |
Drilling platform for amphibious operations App 20200018121A1 - | 2020-01-16 |
Irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof App 20200018681A1 - | 2020-01-16 |
Strong plugging drilling fluid composition and preparation method thereof, and use thereof Grant 10533122 - | 2020-01-14 |
Method For Evaluating Breakage Strength Of First And Second Cemented Surfaces Of Well Cementation Under Dynamic Load App 20200011777A1 - | 2020-01-09 |
Method For Predicting Reservoir Reform Volume After Vertical Well Volume Fracturing Of Low-permeability Oil/gas Reservoir App 20190377101A1 - | 2019-12-12 |