Multi-segment transforming tubular column for horizontal well and use method for same

Abstract

The invention discloses a multi-segment transforming tubular column for a horizontal well and a use method for the multi-segment transforming tubular column. The multi-segment transforming tubular column comprises an oil tube, hydraulic anchors, anti-obstruction water-hammer-resistant expanded packers, breakable ball-throwing fracturing slide sleeves, a setting ball seat and a guide shoe, wherein the hydraulic anchors, the anti-obstruction water-hammer-resistant expanded packers and the breakable ball-throwing fracturing slide sleeves are sequentially connected to form basic unit tubular columns, the plurality of basic unit tubular columns are arranged at the lower end of the oil tube and sequentially connected, and the hydraulic anchor, the anti-obstruction water-hammer-resistant expanded packer, the setting ball seat and the guide shoe are connected to the tail end of the basic unit tubular column at the aftermost end, so as to form the multi-segment transforming tubular column. According to the invention, the breakable ball-throwing fracturing slide sleeves are used for replacing conventional ball-throwing fracturing slide sleeves, the tubular column can be divided into multiple segments, breakage for the tubular columns from the lower tubular columns is realized after a horizon corresponding measure is finished, and stage-by-stage fishing can be implemented after the measure is finished, thus reducing a fishing lifting load; and the problem that the tubular column cannot be lifted out after being blocked by sand is solved, thus saving labour and operation expense.

Description

technical field [0001] The invention relates to a combination of downhole segmented reforming tools for oil and gas production, in particular to a horizontal well segmented reforming pipe string and a use method thereof. Background technique [0002] In the process of oil and gas exploitation, for some oil and gas wells with low natural energy and rapid production decline, after a period of exploitation, it is necessary to carry out targeted step-by-step transformation of the reservoir to improve the recovery rate of the reservoir . Although the existing staged measures to transform the pipe string and technology (one trip pipe string partial pressure three-layer pipe string and its use method, patent number: 200710200824.3), although it can realize the staged transformation of vertical wells to a certain extent, in general In other words, there are still some shortcomings such as few segments, narrow application range, and difficulty in pulling out pipe strings and tools w...

AI Technical Summary

Problems solved by technology

Although the existing staged measures to transform the pipe string and technology (one trip pipe string partial pressure three-layer pipe string and its use method, patent number: 200710200824.3), although it can realize the staged transformation of vertical wells to a certain extent, in general In other words, there are still shortcomings such as few segments, narrow application range, and difficulty in pulling out pipe strings and tools when used in multi-stage measures, and it is difficult to meet the requirements of multi-stage measures for horizontal wells and highly deviated wells.

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