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1.发明公开公开(公告)号：US20240093589A1
公开(公告)日：2024-03-21
申请号：US18470510
申请日：2023-09-20
Applicant: Chengdu University of Technology
Inventor： Jianguo ZHAO , Qingyou LIU , Haiyan ZHU , Guorong WANG , Jie ZENG , Xu LUO , Xuecheng DONG , Xingming WANG
Abstract: Disclosed are a wireless remote control method and system for controllable rotary sliding guiding drilling. An upper end of a controllable rotary sliding guiding drilling mechanism is provided with a drill rod; and the wireless remote control system for controllable rotary sliding guiding drilling further comprises: an MWD arranged at a lower end of the controllable rotary sliding guiding drilling mechanism; a bent screw drill tool mounted at a lower end of the MWD; a drill bit mounted at a lower end of the bent screw drill tool, the drill bit being connected with the bent screw drill tool through a connector; and a clutch module mounted on the controllable rotary sliding guiding drilling mechanism, the clutch module comprising an electromagnetic valve, a processor, an internal pipe pressure sensor, an external pipe pressure sensor and a wireless data transmission module.
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公开(公告)号：US20240360733A1
公开(公告)日：2024-10-31
申请号：US18508923
申请日：2023-11-14
Applicant: Chengdu University of Technology
Inventor： Jianguo ZHAO , Qingyou LIU , Haiyan ZHU , Min WAN , Guorong WANG , Xuecheng DONG , Xu LUO , Yingju PEI , Xingming WANG
CPC classification number: E21B23/001 , E21B47/06 , E21B47/09 , E21B47/13
Abstract: A downhole traction system includes a driving system and a downhole wheeled tractor. The driving system is connected with the downhole wheeled tractor; the downhole wheeled tractor comprises a tractor body, a power unit and a plurality of traction units; the plurality of traction units are arranged along the extension direction of the tractor body; each of the traction units comprises a driving arm, a supporting arm, a supporting wheel, a driving assembly and a supporting assembly; the driving arm and the supporting arm are movably connected with the tractor body; and the supporting wheel is connected with the driving arm and the supporting arm. When the supporting assembly drives the supporting arm to extend along the radial direction of the tractor body under the hydraulic drive action of the hydraulic power unit, the supporting wheel can be abutted against the well wall.
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公开(公告)号：US20240093554A1
公开(公告)日：2024-03-21
申请号：US18463876
申请日：2023-09-08
Applicant: Chengdu University of Technology
Inventor： Qingyou LIU , Jianguo ZHAO , Guorong WANG , Haiyan ZHU , Xuecheng DONG , Xingming WANG , Xu LUO , Yingju PEI , Xianwei DAI
CPC classification number: E21B7/067 , E21B17/042 , E21B31/00 , E21B34/066 , E21B47/06 , E21B47/13
Abstract: Provided is a two-stage reverse-torque bent screw orientation tool. An existing bent screw orientation technology has the technical problems of large friction resistance, difficult control of a borehole track, a low drilling speed and the like, and restricts economic, safe and long-acting development of oil and gas. In order to solve the above problems, the two-stage reverse-torque bent screw orientation tool is invented and composed of a first-stage clutch mechanism and a second-stage clutch mechanism, and the first-stage clutch mechanism and the second-stage clutch mechanism are both composed of a battery, a battery compartment, a pressure sensor, an electromagnetic valve, a body, a plug, a piston, an outer tooth cylinder, an inner tooth cylinder, a transmission cylinder, a connecting cylinder, a bearing, a limiting cylinder, a lower joint, a thrust bearing, a battery compartment, a circuit board, a cover plate and the like.
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Patent Agency Ranking
公开(公告)号：US20210003727A1
公开(公告)日：2021-01-07
申请号：US16580936
申请日：2019-09-24
Applicant: Chengdu University of Technology
Inventor： Haiyan ZHU , Jingen DENG , Xuanhe TANG
Abstract: The present invention discloses an optimization design method for volumetric fracturing construction parameters of an infilled well of an unconventional oil and gas reservoir. The method comprises the following steps: S1, establishing a three-dimensional geological model with physical and geomechanical parameters; S2, establishing a natural fracture network model through integration of rock core-logging-seismic data; S3, generating old well hydraulic fracturing complex fractures based on the natural crack model; S4. establishing a three-dimensional shale gas reservoir seepage model; S5, establishing a three-dimensional geomechanical model; S6, analyzing and calculating a dynamic geostress field; S7, establishing a numerical model for horizontal fracturing complex fractures in the infilled well based on the calculation results of old well complex fractures and dynamic geostress; and S8, performing optimization design on volumetric fracturing construction parameters of the infilled well. The method of the present invention has the following beneficial effects: the effects of long-term exploitation of shale reservoirs in which natural fractures are developed on volumetric fracturing of the infilled well can be reflected accurately, the fracturing construction parameters are subjected to optimization design, the fracturing effect is improved effectively, and the single-well capacity is increased.
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5.发明申请公开(公告)号：US20200263522A1
公开(公告)日：2020-08-20
申请号：US16503471
申请日：2019-07-04
Applicant: CHENGDU UNIVERSITY OF TECHNOLOGY
Inventor： Qingyou LIU , Haiyan ZHU
Abstract: A design method for a personalized drill bit for a complex difficult-to-drill formation includes: S1, acquiring rock drillability indexes of a drilled formation; S2, performing digital simulation analysis of rock breaking of bit teeth and a composite rock breaking experiment of a ring gear and a drill bit, and establishing a mechanical model of the rock interaction at the bottom of a well; S3, establishing an integrated dynamics model of drill string-drill bit-rock system coupling; S4, designing a tooth shape, a tooth distribution density, a crown shape and a gauge protection structure for rock mechanics properties of a complex difficult-to-drill formation; S5, optimizing bit nozzle and hydraulic structure parameters by using the computational fluid dynamics theory and the numerical simulation method; S6. optimizing a manufacturing process of the drill bit by using the tooth material decarburization strengthening technology, the high-strength bit body material technology and the special tooth-shaped tooth technology.
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6.发明申请公开(公告)号：US20200181994A1
公开(公告)日：2020-06-11
申请号：US16511004
申请日：2019-07-15
Applicant: CHENGDU UNIVERSITY OF TECHNOLOGY
Inventor： Qingyou LIU , Haiyan ZHU , Jianguo ZHAO , Guorong WANG
Abstract: A coiled tubing drilling robot, a robot system and a process parameter control method thereof. The coiled tubing drilling robot is mainly characterized in that a drilling pressure and a drilling speed of a drill string are adjusted by an electric proportional relief valve and an electric proportional flow valve disposed inside the drilling robot; a support mechanism of the drilling robot adopts a single oblique block to prop against a spring piece to clamp a well wall; the coiled tubing drilling robot system consists of a coiled tubing intelligent drilling rig, a wellhead device, a coiled tubing, a drilling robot, a drill string vibration measurement device, a MWD, a power drill and a drill bit.
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7.发明申请公开(公告)号：US20210003731A1
公开(公告)日：2021-01-07
申请号：US16790801
申请日：2020-02-14
Applicant: Chengdu University of Technology
Inventor： Haiyan ZHU , Yapu ZHAO , Jianchun GUO , Xuanhe TANG
Abstract: A method for determining a favorable time window of an infill well of an unconventional oil and gas reservoir, which comprises the following steps: S1, establishing a three-dimensional geological model with physical properties and geomechanical parameters; S2, establishing a natural fracture network model in combination with indoor core-logging-seismic monitoring; S3, calculating complex fractures in hydraulic fracturing of parent wells; S4, establishing an unconventional oil and gas reservoir model and calculating a current pore pressure field; S5, establishing a dynamic geomechanical model and calculating a dynamic geostress field; S6, calculating complex fractures in horizontal fractures of the infill well in different production times of the parent wells based on pre-stage complex fractures and the current geostress field; S7, analyzing a microseismic event barrier region and its dynamic changes in infill well fracturing; and S8, analyzing the productivity in different infill times, and determining an infill time window.
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8.发明申请公开(公告)号：US20200301043A1
公开(公告)日：2020-09-24
申请号：US16516261
申请日：2019-07-19
Applicant: CHENGDU UNIVERSITY OF TECHNOLOGY
Inventor： Haiyan ZHU , Qingyou LIU , Yapu ZHAO , Yang LI
Abstract: A numerical simulation and parameter optimization method for volumetric fracturing of an unconventional dual medium reservoir includes the following steps: based on the theory of dual-medium pore elasticity, in consideration of the friction effect between fractures, developing a viscoelastic-plastic damage model of hydraulic fractures based on explicit time integral; simulating random intersection and bifurcation of hydraulic fractures encountering with natural fractures by adopting a method of embedding zero-thickness fracture units in the inner boundaries of computational model grids, and establishing a mathematical model of hydraulic fracture expansion of volumetric fracturing in the unconventional dual-medium reservoir; compiling a finite element program for complex multi-fracture fracturing and competitive expansion during volumetric fracturing of the unconventional reservoir, and establishing a hydraulic fracturing finite element model of a casing-cement ring-perforation hole in cluster-reservoir matrix containing natural fractures.
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