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Single-well zipper type fracturing gas testing construction method

A construction method and zipper-type technology, which are applied in earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problem of high cost of single-well reverse drainage sewage treatment, insufficient flowback energy in atmospheric gas reservoirs, and reservoir formation. Water damage and other problems, to achieve the effect of significantly speeding up, shortening the construction period, and reducing water damage

Pending Publication Date: 2022-06-14
CHINA PETROCHEMICAL CORP +3
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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned technical problems, provide an easy-to-operate, environmentally friendly, energy-saving and emission-reducing device that can effectively shorten the construction period and save operating costs, and solve the problem of insufficient flowback energy and serious damage to reservoir water in atmospheric gas reservoirs. , Single well "zipper type" fracturing and gas testing construction method for the problem of high cost of single well reverse drainage sewage treatment

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  • Single-well zipper type fracturing gas testing construction method
  • Single-well zipper type fracturing gas testing construction method

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Embodiment Construction

[0017] The method of the present invention is further explained below in conjunction with the accompanying drawings:

[0018] see figure 1 , the present invention includes a fracturing period and a blow-out period, wherein during the fracturing period, multi-stage fracturing operations are performed during the day, and blow-out operations are performed at night, and the two are alternately performed. In the whole well blowout period, when the production is stable, the whole well blowout period ends.

[0019] Among them, the flowback fluid from the venting and blowing operation the night before was collected, and the fracturing fluid was prepared and used during the multi-stage fracturing operation the next day; after the last stage of the fracturing operation during the day, the pumping perforation bridge-plug combined operation was performed, and then The night blowing operation is carried out without casting the bridge plug ball; after the night blowing operation is complet...

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Abstract

The invention discloses a single well zipper type fracturing gas testing construction method which comprises a fracturing period and a whole well open flow period, in the fracturing period, multi-section fracturing operation is carried out in the daytime and open flow operation is carried out at night, the multi-section fracturing operation and the open flow operation are carried out alternately, and the whole well open flow period is carried out after the multi-section fracturing operation is carried out in the daytime in the last day. The method is easy to operate, environment-friendly, energy-saving and emission-reducing, the construction period can be effectively shortened, the operation cost is saved, and the problems that the normal-pressure gas reservoir flow-back energy is insufficient, reservoir water damage is serious, and the single-well flow-back liquid sewage treatment cost is high are solved.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, in particular to a single well "zipper type" fracturing gas test construction method. Background technique [0002] With the continuous increase of energy demand, shale gas, as a new type of unconventional natural gas resource, has attracted more and more attention. At present, my country's high-pressure shale gas reservoirs have been successfully developed commercially, but the efficient development technology of atmospheric shale is still in the exploratory stage. Atmospheric shale reservoirs in my country are mainly located in residual synclines outside the basins, with strong structural deformation, formation pressure coefficients of 0.9 to 1.3, shallow burial depths, and insufficient formation energy. So far, no commercial breakthrough has been made. [0003] The characteristics of atmospheric shale reservoirs determine that high-yield industrial gas flow must be obtained through fract...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 胡泽文高云伟钟涛
Owner CHINA PETROCHEMICAL CORP
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