Oil-gas drilling production increasing combined operation device and method

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...

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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

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