Title:
WELL-GROUND COMBINED MINING COILED TUBING DIRECTIONAL FRACTURING GAS EXTRACTION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/087965
Kind Code:
A1
Abstract:
A well-ground combined mining coiled tubing directional fracturing gas extraction system and method. The extraction method comprises the following steps: constructing at least one directional long drill hole in a determined layout layer; putting a casing pipe in the first directional long drill hole, and fixing the hole; putting a fracturing fluid delivery pipe into a ground penetrating well to extend to an opening of the directional long drill hole; completing the assembly of a well-ground combined mining coiled tubing directional fracturing gas extraction system; performing a hydraulic sand blasting perforation operation in a first fracturing segment; after completing the hydraulic sand blasting perforation operation, supplementing water to a coiled tubing, in addition, delivering a fracturing fluid into the first fracturing segment by means of the above-well fracturing fluid delivery pipe and an underground confluence pipe, so as to complete the combined operation of hydraulic fracturing on the first fracturing segment and water supplement to the coiled tubing; completing the fracturing operation in the residual fracturing segments in the first directional long drill hole; after completing segmented fracturing construction of all directional long drill holes, performing pressure maintaining and blowout operations; and after finishing the blowout operation, completing a gas extraction operation.
Inventors:
JIANG ZAIBING (CN)
ZHANG QUN (CN)
LI HAOZHE (CN)
SHU JIANSHENG (CN)
CHENG BIN (CN)
DU TIANLIN (CN)
FAN YAO (CN)
MOU QUANBIN (CN)
ZHANG QUN (CN)
LI HAOZHE (CN)
SHU JIANSHENG (CN)
CHENG BIN (CN)
DU TIANLIN (CN)
FAN YAO (CN)
MOU QUANBIN (CN)
Application Number:
PCT/CN2023/120609
Publication Date:
May 02, 2024
Filing Date:
September 22, 2023
Export Citation:
Assignee:
CCTEG XIAN RES INSTITUTE GROUP CO LTD (CN)
International Classes:
E21F7/00; E21B43/267
Foreign References:
| CN115875070A | 2023-03-31 | |||
| CN113530517A | 2021-10-22 | |||
| CN109339855A | 2019-02-15 | |||
| CN216043669U | 2022-03-15 | |||
| RU2453695C1 | 2012-06-20 | |||
| US20170030173A1 | 2017-02-02 |
Attorney, Agent or Firm:
HENG TAI INTELLECTUAL PROPERTY AGENCY (CN)
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