Title:
CARBONATE ROCK FRACTURE DRILLING TRAJECTORY DESIGN AND CONTROL METHODS
Document Type and Number:
WIPO Patent Application WO/2016/015654
Kind Code:
A1
Abstract:
Carbonate rock fracture drilling trajectory design and control methods, comprising: utilizing earthquake data to obtain the contours of carbonate rock fractures; determining a safe distance from each carbonate rock fracture; determining a segment-based drilling trajectory for each carbonate rock fracture, and connecting the segment-based drilling trajectories of neighboring carbonate rock fractures to obtain a carbonate rock fracture drilling trajectory. The described design and control methods optimize the carbonate rock reservoir drilling trajectory, thus improving communication between a horizontal well and the fractures. This reduces development costs, increases exploration and development efficiency and, at the same time, eliminates leaks resulting from the drilling process, thereby allowing for smooth drilling to a target well depth.
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Inventors:
SHI LIN (CN)
ZHOU YINGCAO (CN)
LIU WEI (CN)
ZHAI XIAOQIANG (CN)
WANG YING (CN)
WANG KAI (CN)
ZHOU BOQI (CN)
ZHOU YINGCAO (CN)
LIU WEI (CN)
ZHAI XIAOQIANG (CN)
WANG YING (CN)
WANG KAI (CN)
ZHOU BOQI (CN)
Application Number:
PCT/CN2015/085517
Publication Date:
February 04, 2016
Filing Date:
July 30, 2015
Export Citation:
Assignee:
DRILLING RES INST OF CHINA NAT PETROLEUM COMPANY (CN)
International Classes:
E21B7/04
Foreign References:
| CN103046868A | 2013-04-17 | |||
| CN104265270A | 2015-01-07 | |||
| US4386665A | 1983-06-07 | |||
| CN103993831A | 2014-08-20 | |||
| CN104975808A | 2015-10-14 |
Attorney, Agent or Firm:
RUNPING&PARTNERS (CN)
北京润平知识产权代理有限公司 (CN)
北京润平知识产权代理有限公司 (CN)
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