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Cable presetting device for horizontal well

A technology for horizontal wells and cables, applied in wellbore/well components, earthwork drilling and production, etc., can solve the problems of cable lowering failure, cable damage, fracture, etc., achieve high fishing success rate and improve the safety of going down well

Active Publication Date: 2018-11-27
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the cables used in automated downhole devices are arranged horizontally on the outside of the tubing, bound and run in. When running in, the cables are easily scratched against the pipe wall and damaged; especially when the cables pass through the deflection section of the horizontal well, they are easily crushed and broken. , so that the lowering of the cable fails, and the existing technology cannot solve this problem

Method used

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  • Cable presetting device for horizontal well

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specific Embodiment approach

[0011] Specific implementation method: see figure 1 : The present invention consists of an upper joint 1, a fishing head 2, a sealing ring 3, a fishing head seat 4, a shear pin 5, a copper ring 6, a shear pin seat 7, a bearing fastening ring 8, a bearing 9, a baffle plate 10, and a central tube 11 , cable lead-out device 12, fastening pin 13, jacket 14, anti-rotation seat 15, anti-rotation pin 16, connecting sleeve 17, sealing ring 18, fastening nut 19, lower joint 20, cable 21; Connect the shearing pin seat 7, jacket 14, connecting sleeve 17, lower joint 20, and cable 21 in turn from top to bottom; the fishing head 2 fixes the cable 21 on the fishing head seat 4 through the thread and the copper ring 6, and the fishing head seat 4 is cut off The pin 5 is fixed on the shearing pin seat 7; the bearing fastening ring 8 connects the bearing 9, the baffle 10, the central tube 11, and the cable lead-out device 12 sequentially from top to bottom; the bearing fastening ring 8 and the...

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Abstract

The invention relates to the technical field of oil field oil production engineering and provides to a cable pre-arrangement device used for a horizontal well. The cable pre-arrangement device used for the horizontal well provided by the invention is designed for solving problems of rolling compaction, intertwining and breakage during a horizontal well cable arrangement process. The cable pre-arrangement device used for the horizontal well is composed of an upper joint (1), a bailer head (2), a seal ring (3), a bailer headstock (4), a shear pin (5), a copper ring (6), a shear pin block (7), a bearing fastening ring (8), a bearing (9), a barrier plate (10), a central pipe (11), a cable leading-out device (12), a fastening pin (13), a sleeve (14), an anti-rotation base (15), an anti-rotation pin (16), a connection sleeve (17), a seal ring (18), a fastening nut (19), a lower joint (20) and a cable (21). The device provided by the invention is mainly applied to a horizontal well cable arrangement process and has advantages of simple structure, high release success rate, high space utilization rate and the like.

Description

technical field [0001] The invention relates to the technical field of oil production engineering in oil fields, and belongs to a horizontal well cable preset device with high release success rate, simple structure and high space utilization rate for horizontal well cable arrangement. Background technique [0002] At present, the cables used in automated downhole devices are arranged horizontally on the outside of the tubing, bound and run in. When running in, the cables are easily scratched against the pipe wall and damaged; especially when the cables pass through the deflection section of the horizontal well, they are easily crushed and broken. , so that the lowering of the cable fails, and the existing technology cannot solve this problem. Contents of the invention [0003] The purpose of the present invention is to design a cable presetting device for horizontal wells that prevents rolling, entanglement and breakage during cable layout in horizontal wells, improves the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/14
CPCE21B23/14
Inventor 杨野刘崇江徐晓宇张激扬李楠赵骊川高飞王齐生黄明刘云
Owner PETROCHINA CO LTD
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