DRILLING POSITIONING APPARATUS, METHOD AND SYSTEM

WIPO Patent Application WO/2023/221458

A1

A drilling positioning apparatus, comprising a three-axis fluxgate (31) and a computing apparatus (32), wherein the three-axis fluxgate (31) is electrically connected to the computing apparatus (32); the three-axis fluxgate (31) is arranged at a target location of a horizontal well (2), the target location is located in a target drill pipe (23), and the target drill pipe is a drill pipe which is located in the end part at the lowermost part of the horizontal well (2); the three-axis fluxgate (31) is used for measuring a target magnetic-field value at the target location, the target magnetic-field value is the magnetic-field intensity of a static magnetic field at the target location, the direction of the static magnetic field is the circumferential direction of a target well (1), and the static magnetic field is generated by a preset static magnetic-field generation apparatus (4) in the target well (1); the computing apparatus (32) is used for acquiring the posture of the horizontal well, and determining the distance and azimuth angle between the horizontal well (2) and the target well according to the target magnetic-field value and the posture of the horizontal well; and when the distance and azimuth angle between the horizontal well (2) and the target well (1) are determined, a coordinate conversion matrix is determined according to the posture of the horizontal well, and the coordinate conversion matrix is used for converting the target magnetic-field value into a magnetic-field value in a geomagnetic-field coordinate system, and the azimuth angle between the target location and the target well is thus determined. Further disclosed are a drilling positioning method and a drilling positioning system.

QIAO LEI (CN)
YUAN GUANGJIE (CN)
CHE YANG (CN)
LIN SHENGJIE (CN)
DU WEIQIANG (CN)
WANG CHENLONG (CN)
LAN HAIFENG (CN)
HE AIGUO (CN)
WANG KAILONG (CN)
ZHU XIAOYU (CN)
REN XIANKE (CN)
LIU TIANEN (CN)
LIU YISHAN (CN)
ZHENG LI (CN)
ZHANG JIZHE (CN)
DONG SHENGXIANG (CN)

PCT/CN2022/136458

November 23, 2023

December 05, 2022

Click for automatic bibliography generation  

CHINA NAT PETROLEUM CORP (CN)
CNPC ENG TECH RES & DEV CO LTD (CN)

E21B47/09; E21B7/04; E21B47/13

CN101806210A	2010-08-18
CN106050223A	2016-10-26
CN104781503A	2015-07-15
CN101929310A	2010-12-29
CN104632076A	2015-05-20
US20150362621A1	2015-12-17

LEADER PATENT & TRADEMARK FIRM (CN)

View/Download PDF      PDF Help

Previous Patent: SILICON PHOTONIC TRANSCEIVER INTEGRATED CHIP FOR PON OLT SYSTEM

Next Patent: KITCHEN APPLIANCE