公开(公告)号：US11078768B2

公开(公告)日：2021-08-03

申请号：US16605068

申请日：2019-04-04

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Teng Lu ,  Zhaomin Li ,  Jianping Yang ,  Hongyuan Wang ,  Shizhong Wang ,  Yao Wei ,  Zhuangzhuang Wang ,  Dawei Hou ,  Yajie Xu

IPC: E21B43/24 ,  E21B43/30 ,  E21B43/16

Abstract: Disclosed belongs to the technical field of oil and gas field development engineering, and particularly relates to a super heavy oil development method for strengthening an SAGD steam chamber to break through a low physical property reservoir. The super heavy oil development method for strengthening the SAGD steam chamber to break through the low physical property reservoir includes the following steps: (1) selection of a developed oil reservoir; (2) well distribution; (3) steam chamber forming; (4) steam chamber expansion; (5) steam chamber strengthening. The method may enhance the ability of the steam chamber to break through the low physical property reservoir, enlarge the development height of the steam chamber, and further improve the SAGD development effect of super heavy oil.

公开(公告)号：US11280932B2

公开(公告)日：2022-03-22

申请号：US16420010

申请日：2019-05-22

Applicant: CHINA UNIVERSITY OF PETROLEUM—BEIJING

Inventor： Guangzhi Liao ,  Lizhi Xiao ,  Yangyang Xu ,  Wei Liu ,  Yao Wei

IPC: G01V3/32 ,  E21B47/14 ,  E21B49/00

Abstract: Provided are a main control system and a device for a nuclear magnetic resonance logging while drilling tool, the system includes: a digital signal processor, an auxiliary measurement module, a pulse signal generation module and a memory disposed in a downhole drilling tool; wherein the digital signal processor is communicatively connected to an upper computer arranged on the ground, the auxiliary measurement module and the pulse signal generation module respectively; the memory is communicatively connected to the pulse signal generation module. The main control system and a device for a nuclear magnetic resonance logging while drilling tool achieve the effect of improving the accuracy of the logging data.

公开(公告)号：US10746825B2

公开(公告)日：2020-08-18

申请号：US16238369

申请日：2019-01-02

Applicant: CHINA UNIVERSITY OF PETROLEUM—BEIJING

Inventor： Lizhi Xiao ,  Guangzhi Liao ,  Wei Liu ,  Yao Wei ,  Yangyang Xu

IPC: G01R33/36 ,  G01R33/34 ,  G01R33/3415 ,  G01N24/08 ,  G01V3/32

Abstract: Provided is an array antenna driving method and device for a three-dimensional scanning nuclear magnetic resonance imager, wherein each antenna to be operated is driven to transmit a nuclear magnetic pulse signal by receiving a control command sent by a control system; parsing the control command to generate a pulse transmission timing signal and an antenna switching control signal; processing an externally inputted high voltage signal according to the pulse transmission timing signal to output high voltage radio frequency pulses of a plurality of channels; and selecting a high voltage radio frequency pulse of at least one channel and the antenna to be operated in the nuclear magnetic resonance pulse array antenna according to the antenna switching control signal, and superposing the selected high voltage radio frequency pulse. The device of the present invention can improve multi-layer slice information detection of signals in circumferentially different azimuth zones.