A horizontal well directional sand blasting perforation fracturing integrated tool string and construction method

Abstract

The invention relates to a horizontal well directional sand blasting perforation and fracturing integral tool pipe column and a construction method thereof. The tool pipe column comprises a safe joint, a first centralizer, a first rotating joint, a hydraulic sand blasting device, a second rotating joint, a second centralizer, a packer, a coupling positioning device and a guiding shoe, wherein the safe joint is arranged at the left end of the tool pipe column; the guiding shoe is arranged at the right end of the tool pipe column; the left end of the safe joint is connected with an oil pipe; the first centralizer, the first rotating joint, the hydraulic sand blasting device, the second rotating joint, the second centralizer, the packer and the coupling positioning device are sequentially arranged between the right end of the safe joint and the guiding shoe from left to right. The horizontal well directional sand blasting perforation and fracturing integral tool pipe column and the construction method provided by the invention have the advantages that the structure of the tool pipe column is simple; the directional san blasting perforation can be realized; the stratum energy is released to the greatest degree; the problem of shot hole compression zone of gunpowder perforation can be solved.

Description

technical field [0001] The invention relates to downhole tools in the technical field of petroleum and natural gas exploitation and equipment, in particular to a horizontal well directional sandblasting, perforating and fracturing integrated tool string and construction method. Background technique [0002] Because hydraulic sand blasting perforation does not pollute the formation, it solves the problem of the compaction zone of the blasthole in gunpowder perforation, and can release the formation energy to the maximum, so it is widely used. However, the existing hydraulic sandblasting perforation cannot solve the problem of directional perforation. During the implementation of hydraulic sandblasting perforation fracturing in horizontal wells with bottom water, if the problem of the orientation of the injector cannot be solved, the fracturing operation cannot be carried out. . [0003] The utility model with the notification number CN 201420541 Y discloses a positioning san...

AI Technical Summary

Problems solved by technology

However, the existing hydraulic sandblasting perforation cannot solve the problem of directional perforation. During the implementation of hydraulic sandblasting perforation fracturing in horizontal wells with bottom water, if the problem of the orientation of the injector cannot be solved, the fracturing operation cannot be carried out.

[0003] The utility model with the notification number CN 201420541 Y discloses a positioning sandblasting perforator for horizontal wells. It is necessary to first determine the orientation of the perforation through the construction design, and determine the opening position of the nozzle on the body according to the angle of the perforation on the ground. Positioning is carried out through its own eccentricity, rotating structure and self-weight, but it does not involve the entire pipe string technology; the utility model patent with the notification number CN203050649 U discloses an intermediate joint of a horizontal well perforating gun, and describes a propellant perforating gun The intermediate swivel joint of the present invention does not involve sand blasting perforation technology; the utility model with the notification number CN 204060649 discloses a bearing ball joint for external directional perforation, and describes a bearing ball joint for gunpowder perforation, which is used to shoot The technology of converting the sliding friction of the hole pipe string into rolling friction does not involve sandblasting perforation and fracturing pipe strings, and the introduction of the entire downhole tool is not comprehensive

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