公开(公告)号：US20160245063A1

公开(公告)日：2016-08-25

申请号：US15144821

申请日：2016-05-03

Applicant: Southwest Petroleum University

Inventor： Tiejun Lin ,  Ying Zhang ,  Zhanghua Lian ,  Qiang Zhang ,  Yong He ,  Gao Li ,  Taihe Shi ,  Hao Yu

IPC: E21B44/00 ,  E21B21/16 ,  E21B7/04 ,  E21B3/00 ,  E21B4/02

CPC classification number: E21B10/44 ,  E21B7/046 ,  E21B21/16 ,  E21B44/005

Abstract: A remote-controlled adjustable-speed screw drill for gas-drive hydraulic-motive during gas drilling is provided, including a piston speed control system, a motor assembly, a cardan shaft assembly and a transmission shaft assembly which are connected with each other from up to down in sequence. The motor assembly includes air inlets, a cam, air cylinders, pistons, a connecting rod, air outlets, liquid inlets, hydraulic cylinders, liquid check valves, a liquid storage chamber, liquid outlets, a liquid injecting chamber, a liquid injecting hole, an anti-drop cap, a rotor, a stator, and a motor assembly housing. The present invention utilizes the high-pressure gas injected by the gas drilling to drive the pistons to move back and forth at high-speed, so as to drive the incompressible liquid within the driving screw to achieve the self-circulating motion, and the screw rotor is driven to rotate by the liquid.

Abstract translation: 提供了一种用于气体钻井中气体驱动液压动作的遥控可调速螺旋钻，包括活塞速度控制系统，马达组件，万向轴组件和传动轴组件，它们彼此连接起来 按顺序排列。 马达组件包括空气入口，凸轮，气缸，活塞，连杆，空气出口，液体入口，液压缸，液体止回阀，液体储存室，液体出口，液体注入室，液体注入孔， 防滴帽，转子，定子和马达组件壳体。 本发明利用通过气体钻井喷射的高压气体来驱动活塞高速往复运动，以驱动驱动螺杆内的不可压缩液体以实现自身循环运动，螺杆 转子由液体驱动旋转。

公开(公告)号：US20230168164A1

公开(公告)日：2023-06-01

申请号：US17690018

申请日：2022-03-09

Applicant: Southwest Petroleum University

Inventor： Duo Hou ,  Zhongling Xiao ,  Zhi Zhang ,  Jian Ding ,  Jiawei Wang ,  Taihe Shi

IPC: G01N3/02 ,  G01M3/00 ,  G01M3/26 ,  G01N33/38

CPC classification number: G01N3/02 ,  G01M3/002 ,  G01M3/26 ,  G01N33/383 ,  E21B47/005

Abstract: The invention discloses a device for testing strength and sealing performance of cement sheath after perforation, comprising a cement sheath curing maintenance simulation component, a perforation operation simulation component, and a cement sheath performance test component. By simulating the detonation effect and fluid-solid coupling effect, quantitatively testing the internal transverse crack and longitudinal crack propagation size, compressive strength and tensile strength, permeability, blowby pressure, blowby velocity and other parameters of the cement sheath, drawing the relation curve between different perforation distances and the maximum blowby pressure and permeability of the cement sheath, determining the perforation distance Hp where the blowby of the cement sheath does not occur, determining the perforation distance HK to ensure the sealing of the cement sheath, and using min (Hp, HK), the critical perforation distance that the cement sheath has sufficient strength to prevent blowby and meet the sealing requirements can be determined.

公开(公告)号：US09850716B2

公开(公告)日：2017-12-26

申请号：US15144821

申请日：2016-05-03

Applicant: Southwest Petroleum University

Inventor： Tiejun Lin ,  Ying Zhang ,  Zhanghua Lian ,  Qiang Zhang ,  Yong He ,  Gao Li ,  Taihe Shi ,  Hao Yu

IPC: E21B10/44 ,  E21B21/16 ,  E21B44/00 ,  E21B7/04

CPC classification number: E21B10/44 ,  E21B7/046 ,  E21B21/16 ,  E21B44/005

Abstract: A remote-controlled adjustable-speed screw drill for gas-drive hydraulic-motive during gas drilling is provided, including a piston speed control system, a motor assembly, a cardan shaft assembly and a transmission shaft assembly which are connected with each other from up to down in sequence. The motor assembly includes air inlets, a cam, air cylinders, pistons, a connecting rod, air outlets, liquid inlets, hydraulic cylinders, liquid check valves, a liquid storage chamber, liquid outlets, a liquid injecting chamber, a liquid injecting hole, an anti-drop cap, a rotor, a stator, and a motor assembly housing. The present invention utilizes the high-pressure gas injected by the gas drilling to drive the pistons to move back and forth at high-speed, so as to drive the incompressible liquid within the driving screw to achieve the self-circulating motion, and the screw rotor is driven to rotate by the liquid.

公开(公告)号：US12196725B2

公开(公告)日：2025-01-14

申请号：US18055819

申请日：2022-11-15

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Duo Hou ,  Zhi Zhang ,  Zhongling Xiao ,  Huabo Yang ,  Jian Ren ,  Taihe Shi

IPC: G01N3/56 ,  E21B47/005 ,  G01N3/12 ,  G01N25/00

Abstract: The embodiments of the present disclosure disclose an evaluation apparatus and a method for seal integrity of a wellbore in a full life cycle. The apparatus may include an oil pipe temperature and pressure simulation assembly, an oil casing annular temperature and pressure simulation assembly, a formation confining pressure simulation assembly, a casing-cement sheath-formation combination preparation assembly, a blowby characteristic detection assembly, and a monitoring system. The present disclosure may crustal stress quickly complete scanning of cement slurry system and maintenance and preparation of casing-cement sheath-formation combination, intelligent monitor blowby pressure of cement sheath in real time, test the critical blowby pressure curve of cement sheath of oil and gas wells under various production conditions throughout the life cycle for evaluating the seal integrity of wellbore, and provide technical support for the formulation of wellbore safeguard measures.

公开(公告)号：US11828733B2

公开(公告)日：2023-11-28

申请号：US17690018

申请日：2022-03-09

Applicant: Southwest Petroleum University

Inventor： Duo Hou ,  Zhongling Xiao ,  Zhi Zhang ,  Jian Ding ,  Jiawei Wang ,  Taihe Shi

IPC: G01N3/02 ,  G01M3/00 ,  G01M3/26 ,  G01N33/38 ,  E21B47/005 ,  E21B43/116

CPC classification number: G01N3/02 ,  G01M3/002 ,  G01M3/26 ,  G01N33/383 ,  E21B43/116 ,  E21B47/005

Abstract: The invention discloses a device for testing strength and sealing performance of cement sheath after perforation, comprising a cement sheath curing maintenance simulation component, a perforation operation simulation component, and a cement sheath performance test component. By simulating the detonation effect and fluid-solid coupling effect, quantitatively testing the internal transverse crack and longitudinal crack propagation size, compressive strength and tensile strength, permeability, blowby pressure, blowby velocity and other parameters of the cement sheath, drawing the relation curve between different perforation distances and the maximum blowby pressure and permeability of the cement sheath, determining the perforation distance Hp where the blowby of the cement sheath does not occur, determining the perforation distance HK to ensure the sealing of the cement sheath, and using min (Hp, HK), the critical perforation distance that the cement sheath has sufficient strength to prevent blowby and meet the sealing requirements can be determined.