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A kind of oil and gas drilling and production stimulation combined device and method

A technology of oil and gas drilling and joint production, which is applied in drilling equipment and methods, drilling with liquid/gas jet, drilling equipment, etc. Chemical pollution, small footprint effect

Active Publication Date: 2019-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the object of the present invention is to provide a combined oil and gas drilling and production stimulation device and method, which is used to overcome the defects of the current drilling and fracturing methods, such as complicated construction procedures, long well construction period, and high operating costs

Method used

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  • A kind of oil and gas drilling and production stimulation combined device and method
  • A kind of oil and gas drilling and production stimulation combined device and method
  • A kind of oil and gas drilling and production stimulation combined device and method

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Embodiment

[0073] Taking a horizontal well in a coalbed methane reservoir as an example, the drilling and production stimulation joint operation device and method are described:

[0074] 1. Prepare the construction conditions of the combined oil and gas drilling and production stimulation device: connect each device to ensure that the connection is firm and the seal is reliable;

[0075] 2. Start the high-pressure pump 1: the working displacement of the high-pressure pump is 100L / min, and the working pressure is 150MPa;

[0076] 3. Drilling operation: Power is supplied to the downhole dynamic drilling tool 10 through the ground, and the downhole dynamic drilling tool 10 drives the drill bit 8 to rotate to break the rock; Crushing; the thrust nozzle 14 behind the drill bit 8 pushes the drill bit 8 forward to drill. The cuttings produced by drilling are returned to the surface from the high-pressure coiled tubing 6 and the annular space of the wellbore, and after being treated by the surf...

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Abstract

The invention discloses an oil-gas drilling production increasing combined operation device and method. The device comprises a high-pressure pump, high-pressure coiled tubing and a downhole drilling tool combination, wherein the downhole drilling tool combination comprises a drill bit and a downhole cutting nipple; the drill bit is connected with the high-pressure coiled tubing, and a rock breaking nozzle and a thrust nozzle are formed in the front end and the rear end of the drill bit correspondingly; the downhole cutting nipple comprises a shell and a valve body; the valve body is provided with an axial hydraulic channel and a radial hydraulic channel; a jet flow channel is formed in the shell and provided with a radial jet flow nozzle; a drilling water channel is further formed in the shell; and the axial hydraulic channel communicates with the rock breaking nozzle of the drill bit. When the valve body moves in the shell to enable the axial hydraulic channel to communicate with the drilling water channel, the radial hydraulic channel does not communicate with the jet flow channel; and when the radial hydraulic channel communicates with the jet flow channel, the axial hydraulic channel do not communicate with the drilling water channel. Compared with an existing oil-gas exploitation technology, the oil-gas drilling production increasing combined operation device and the method have the advantages that (1) operation efficiency is high; (2) the production increasing effect is good; (3) reservoir adaptability is wide; and (4) the environmental influence is less.

Description

technical field [0001] The invention relates to an oil and gas extraction device and method, which are especially suitable for the extraction of oil and gas in low-permeability reservoirs. Background technique [0002] Compared with traditional oil and gas resources, unconventional resources such as tight oil and gas, shale gas, and coalbed methane are characterized by low porosity and low permeability, resulting in low single well productivity, low recovery rate, and poor economic benefits, and development faces many challenges. The development of low-permeability oil and gas mainly adopts horizontal well drilling and horizontal well staged fracturing technology, but at present, horizontal well drilling and horizontal well staged fracturing are two construction processes. Completion strings are used to carry out staged fracturing operations for horizontal wells. The construction process is complex, the well construction period is long, and the operation cost is high. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/02E21B7/18E21B10/60E21B10/42E21B43/26
CPCE21B7/02E21B7/18E21B10/602E21B43/26
Inventor 王敏生光新军赵阳闫娜邓辉
Owner CHINA PETROLEUM & CHEM CORP
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