A selective mining process and its equipment

Abstract

The invention discloses a selective mining process and equipment thereof. The process comprises the steps of cleaning a pipe, washing a well, perforating, inputting a laminated tubular column, setting a packer, cleaning the well for production, monitoring and analyzing production, and extracting oil selectively. The equipment comprises the laminated tubular column and the packer, wherein the packer is used for separating an oil layer of an oil well, is mounted on the laminated tubular column and is arranged at the place where the oil layer is separated; the laminated tubular column is also provided with multiple hydraulic control switch slide sleeves; the hydraulic control switch slide sleeves are connected to the laminated tubular column and are arranged to correspond to the oil layer; the multiple hydraulic control switch slide sleeves are connected to a ground control system through control pipelines respectively; the ground control system is used for opening and closing the hydraulic control switch slide sleeves.

Description

technical field [0001] The invention relates to an oil extraction process and its equipment in the field of oil extraction, in particular to a selective extraction process and its equipment. Background technique [0002] For the completion of vertical wells or conventional directional wells, the perforation completion method is generally adopted. In order to reduce operating costs, it is necessary to perforate multiple layers at a time, and then run into separate layers for separate production. The layers are separated by packers, and each layer corresponds to A switch slide. During the production process, according to the oil and gas reservoir development plan, the steel wire is lowered to open and close the sliding sleeve to realize selective oil recovery. see figure 1 , figure 1 It is a structural schematic diagram of selective oil recovery equipment in the prior art. The tubing string of the oil production equipment includes guide shoe 10, perforated pipe 20, working...

AI Technical Summary

Problems solved by technology

[0010] However, with the existing oil production equipment, for directional wells or horizontal wells with large inclination angles, steel wire operations cannot be performed, and it is difficult to realize separate production. layer production, the operating cost is relatively high

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