Title:
SLEEVE PATCH PLUGGING CONTINUOUS OIL PIPE DRAG FRACTURING OLD WELL RECONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/228088
Kind Code:
A1
Abstract:
A sleeve patch plugging continuous oil pipe drag fracturing old well reconstruction method: by means of a sleeve patch plugging continuous oil pipe drag fracturing column to which a continuous oil pipe connector (1), a safety joint (2), a spray device (3), a continuous oil pipe bottom-seal packer (4), a sleeve connecting hoop positioning device (5), and a righting head (6) are connected in sequence from top to bottom, using a technical measure combining a sleeve patch plugging technique with continuous oil pipe bottom-seal drag large-displacement fine repeated fracturing reconstruction processing to implement effective plugging of original perforation positions of the old well and repeated fracturing reconstruction of the old well, the employed technical measure of continuous drag fracturing of a continuous oil pipe with a bottom-seal packer having the characteristics of large displacement construction and fine fracturing reconstruction, efficiently completing the repeated reconstruction of the old well, effectively exploiting the mining potential of the old well, and increasing the recovery rate.
Inventors:
SUN HU (CN)
SU MINWEI (CN)
DENG XIAOQIANG (CN)
LIAO ZUOJIE (CN)
LONG SHIMING (CN)
ZHANG WEN (CN)
LI JINGBIN (CN)
GOU WEN (CN)
GU CHONGSHAN (CN)
LI XINGXING (CN)
TIAN WENCHAO (CN)
WANG WENPENG (CN)
NING ZHIJUN (CN)
WANG KEMENG (CN)
XI ZHONGCHEN (CN)
XIE TAO (CN)
SU MINWEI (CN)
DENG XIAOQIANG (CN)
LIAO ZUOJIE (CN)
LONG SHIMING (CN)
ZHANG WEN (CN)
LI JINGBIN (CN)
GOU WEN (CN)
GU CHONGSHAN (CN)
LI XINGXING (CN)
TIAN WENCHAO (CN)
WANG WENPENG (CN)
NING ZHIJUN (CN)
WANG KEMENG (CN)
XI ZHONGCHEN (CN)
XIE TAO (CN)
Application Number:
PCT/CN2019/091032
Publication Date:
November 19, 2020
Filing Date:
June 13, 2019
Export Citation:
Assignee:
CHINA NAT PETROLEUM CORP (CN)
CHINA NAT PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY (CN)
CHINA NAT PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY (CN)
International Classes:
E21B29/10
Foreign References:
| CN104213891A | 2014-12-17 | |||
| CN206468317U | 2017-09-05 | |||
| CN108119118A | 2018-06-05 | |||
| CN109469463A | 2019-03-15 | |||
| CN104213894A | 2014-12-17 | |||
| CN108643888A | 2018-10-12 | |||
| US5954132A | 1999-09-21 |
Attorney, Agent or Firm:
XI'AN JISHENG PATENT AGENCY CO., LTD (CN)
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