Tie-back type electric control shaft isolation intelligent well completion tool and working method

An intelligent well completion and wellbore technology, applied in wellbore/well components, wellbore/well valve devices, drilling equipment, etc., can solve the problems of operational risk and high cost, achieve fast signal transmission rate, long downhole life, Feature-rich effects

Pending Publication Date: 2021-10-19
弗润联科(北京)石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the conditions of oil wells, the expected life of permanent downhole completion tools and instruments may range from several months to several years. According to statistics, in cable intelligent well completion, 60%-80% of well failures are due to corrosion, fracture, stress, etc. of cables. Due to non-docking methods between cables and downhole instruments and tools due to non-downhole equipment and tool reasons such as fracture, failure of downhole falling objects, and wellbore cleaning problems, once any problems related to cables occur, all well completion tools must be retrieved and reinstalled. well completion, which means replacing the production string and associated systems, an operation that is risky and costly

Method used

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  • Tie-back type electric control shaft isolation intelligent well completion tool and working method
  • Tie-back type electric control shaft isolation intelligent well completion tool and working method
  • Tie-back type electric control shaft isolation intelligent well completion tool and working method

Examples

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Embodiment Construction

[0053] Such as Figure 1-13 As shown, a reconnectable electronically controlled wellbore isolation intelligent completion tool consists of a plug-in anchor seal with a wet joint, a sealing cylinder with a wet joint, a cable packer, and an eccentric cluster electro-hydraulic Control system pup joint, distribution line sub-section and hydraulic control ball bottom valve 600.

[0054] Such as Figure 1-3 As shown, the plug-in anchor seal with a wet joint includes a first upper joint 101 and a first mandrel 104 that are connected to each other. The outer wall of the first upper joint 101 is provided with a through groove 102 and a pawl 103. A first through hole 112 parallel to the axial direction is provided in the wall surface of a mandrel 104, and a first isolation plug 105 and a first electrode assembly 106 are provided on the upper part of the first through hole 112, and the middle part of the first mandrel 104 A first spring 107 is arranged on the outer wall of the first ma...

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PUM

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Abstract

The invention discloses a tie-back type electric control shaft isolation intelligent well completion tool and a working method. The tool is composed of an insertion clamping anchoring seal with a wet connector, a sealing cylinder with a wet connector, a cable passing packer, an eccentric bundling type electric hydraulic control system short section, a line concentration distribution short section and a hydraulic control ball bottom valve. By the adoption of the scheme, expensive tools and instruments in an underground intelligent well completion main body system can still be reserved, temporary electrical separation can be formed between the expensive tools and instruments and an upper cable, an operator is allowed to safely and simply replace an oil pipe and a defective cable under the condition that a well is not killed, and hydraulic and electrical connection with the underground intelligent well completion main body system is reestablished in the short time as much as possible.

Description

technical field [0001] The present invention relates to the technical field of oil drilling and production downhole tools, in particular to an intelligent completion tool for wellbore isolation, which is mainly used for oil and gas well wellbore production or pump injection intelligent exploitation and operation, especially but not limited to the use of downhole wet electrode docking method A method and device for downhole intelligent well completion control are established. Background technique [0002] In order to simplify the pipe string for fracturing and acidizing, reduce the tripping operation, prevent the loss of well fluid in low-pressure wells, control the safety of well control in snubbing operations, test wells for shut-in wells, offshore storm valves, etc., and the oil industry generally relies on oil wells and The purpose of collecting data in the reservoir. Based on the above-mentioned need for data and control, many wells are equipped with battery-operated per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12E21B17/02E21B33/126E21B34/16E21B34/10
CPCE21B47/12E21B17/023E21B33/1265E21B34/16E21B34/10
Inventor 董丹
Owner 弗润联科(北京)石油科技有限公司
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