Electronically controlled hydraulic slottingblocking-removing reservoir modification tool

Abstract

The invention discloses an electronically controlled hydraulic slottingblocking-removing reservoir modification tool capable of performing a slottingoperation on an oil well reservoir. Theelectronically controlled hydraulic slottingblocking-removing reservoir modification toolcomprises a reservoir modification valve connected to an oil pipe, the reservoir modification valve comprises a sleeve pipevalve seat and a sliding sleeve is fixedly arranged in a central hole of the sleeve pipe valve seat, and the outer side end surface, close to the oil pipe, of the sliding sleeve is recessed, and an electric wood ball is installed onthe outer side end surfaceof the sliding sleeve. The lower end of the sleeve pipevalve seat is coaxially connected with a spray gun nipple through a threaded joint,wiper blocksare evenly distributed on the axial outer peripheral wall of thespray gun nipple, and a central passage is arranged in thespray gun nipple. Nozzles are arranged on the spray gun nippleon thefrontsides and rear sides of the wiper blocks, and the two nozzles are arranged in a 90-degree-included-angle mode. The lower end of the spray gun nipple is connected to a well washing guide shoe by athreaded joint, and the lower end of the well washing guide shoe is closed, a backwashing passage is arranged at the center shaft position of the well washing guide shoe, a steel ball is arranged atthe liquid inlet end of the backwashing channel, and four liquid outlets are formed in thebackwashing passage.

Description

technical field [0001] The invention relates to an electronically controlled hydraulic slotting and plugging removal reservoir transformation tool capable of performing slotting operations on oil well reservoirs. Background technique [0002] In oilfield production operations, in order to increase the permeability of the formation around the wellbore, it is often necessary to cut the formation near the wellbore by jetting high-pressure water. The existing conventional cutting tools have the problems of insufficient perforation depth and contamination of the perforation compaction zone, the resulting cracks are not easy to control, and the effect of increasing production and injection is not obvious. Moreover, the erosion of water flow and gravel often causes great impact and damage to casing and cement sheath. Contents of the invention [0003] The purpose of the present invention is to provide an electronically controlled hydraulic slotting and plugging removal reservoir...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electronically controlled hydraulic slotting and plugging removal reservoir transformation tool, which can solve the problems of insufficient perforation depth and pollution in the perforation compaction zone, and increase the seepage area at the same time. The construction is simple and the cost is low. The generated fractures are easy to control, and the effect of increasing production and injection is obvious

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