公开(公告)号：US20210199535A1

公开(公告)日：2021-07-01

申请号：US16982439

申请日：2019-04-04

Applicant: SOUTHWEST PETROLEUM UNIVERSITY ,  Chengdu University of Technology

Inventor： Jun LIU ,  Xiaoqiang GUO ,  Qingyou LIU ,  Yufa HE ,  Anchao WEI ,  Linlin ZENG ,  Jianxun WANG

IPC: G01M7/02

Abstract: The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (1), a motor (2) and a hook load adjustment device (3), wherein a guide wheel (4) is provided on the top of the pool (1); a support seat A (5) and a support seat B (6) are fixed on the bottom surface of the pool (1); an organic glass tube (8) is fixed between the support seat A (5) and the support seat B (6); a casing (9) is respectively provided on the top surface of the support seat B (6) and the top surface of the trailer (7); the left end of the plastic tube (10) extends into the organic glass tube (8) along the axis of the organic glass tube (8). The present invention further discloses a simulation method. The present invention has the following beneficial effects: the structure is compact; the longitudinal-transverse-torsion coupled vibration responses of the drill string under different rotating speeds of the drill string, ocean flow rates, flow rates of the drilling fluid, torsional excitations and longitudinal excitations at the bottom of the formation section is simulated, thereby filling up the blank in the riser-free drilling system.

公开(公告)号：US20190010760A1

公开(公告)日：2019-01-10

申请号：US15744891

申请日：2017-02-27

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Jun LIU ,  Xiaoqiang GUO ,  Qingyou LIU ,  Guorong WANG ,  Haiyan ZHU ,  Xian LIU

IPC: E21B7/06 ,  E21B47/12 ,  E21B43/117

CPC classification number: E21B7/061 ,  E21B43/117 ,  E21B47/12

Abstract: A mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system includes an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A/D converter and a computer. The signal amplifier, the A/D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string includes an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom.