Multi-layer intelligent tubular column controlled by single pipeline

Abstract

The invention relates to the field of intelligent well completion of oil and gas well exploitation, and particularly provides a multi-layer intelligent tubular column controlled by a single pipeline. A Christmas tree is connected with the top of an oil pipe, and sealers are installed on the outer wall of the oil pipe and the inner wall of a wellhead. A safety valve, a production packer, a connector, an electric pump, a circulating sliding sleeve, a decoder, a positioning sealing assembly, a data acquisition instrument, a multi-stage control unit and an isolation sealing assembly are sequentially installed at the bottom of the oil pipe from top to bottom, the positioning sealing assembly is in interference sealing connection with a top packer, the isolation sealing assembly is in interference sealing connection with an isolation packer, the decoder is connected with the control system through a main pipeline, the bottom of the decoder is connected with the multi-stage control unit through a branch pipeline, and the data acquisition instrument is connected with a data acquisition system through a cable. The reliability and timeliness are improved, real-time detection and adjustment are achieved, cost is saved, operation safety is improved, operation difficulty is lowered, labor intensity is lowered, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of intelligent well completion for oil and gas well exploitation, in particular to a multi-layer intelligent pipe string controlled by a single pipeline. Background technique [0002] Intelligent well completion technology is to build a closed-loop production management system by combining software and hardware closely through downhole measurement and control equipment, wellhead control devices, real-time remote control, data acquisition, analysis feedback adjustment control, well completion scheme design, data analysis and decision-making. . It provides a brand-new way to improve the level of oil reservoir operation and management, and has broad application prospects. [0003] At present, intelligent completion technology is mostly applicable to wells with complex geological conditions and complex structures, such as multi-layer development wells, long horizontal wells with long horizontal sections, offshore oil and...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a single-pipeline to solve the problems of poor tool reliability, short service life, limited number of layers for liquid flooding completion, and high cost of liquid control pipelines in the existing intelligent well completion technology. Pipeline control multi-layer intelligent pipe string

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