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Bridge type concentric integrated regulating apparatus for seal examining and single-layer direct detecting

An integrated technology for adjusting instruments, which is applied in the directions of sealing/isolation, production fluid, wellbore/well components, etc., can solve the problems of increased operation risk, large flow error, and heavy workload, so as to reduce downhole operation risk and The effect of construction cost, improvement of precision efficiency, and less interlayer interference

Active Publication Date: 2016-03-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the need to carry out at least two operations of seal inspection and adjustment process in the existing separate injection well test process, and the flow test adopts the flow collection type, the flow error is large, the workload is large, the efficiency is low, and the increase job risk

Method used

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  • Bridge type concentric integrated regulating apparatus for seal examining and single-layer direct detecting

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Experimental program
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Embodiment 1

[0019] In order to overcome the problems in the existing layered water injection process technology, such as seal inspection and measurement and adjustment process, which need to be lowered into the instrument for at least two operations, the workload is relatively large, the efficiency is low, and the flow test error is superimposed, etc., the present invention provides a kind of like figure 1 The shown bridge-type concentric integrated sealing single-layer direct measurement adjustment instrument includes an upper joint 1 and an outer sheath 4, the upper joint 1 is connected to the upper end of the outer sheath 4, and the upper end of the outer sheath 4 is An upper magnetic steel 2 is provided, and the upper magnetic steel 2 is connected with the control collection mechanism 3 below, and the control collection mechanism 3 is connected with the lower magnetic steel 5 below; the lower magnetic steel 5 and the upper magnetic steel 2 realize the accurate position of downhole tool...

Embodiment 2

[0022] On the basis of Embodiment 1, the upper magnetic steel 2 and the lower magnetic steel 5 are fixed in the outer sheath 4 through the framework. A positioning frame body 11 is sleeved on the transmission shaft 15 below the limit position control mechanism 10 , and the positioning frame body 11 is fixed in the outer sheath 4 . The control acquisition mechanism 3 adopts the SM201 type control module, which is electrically connected to the outside through the upper joint to realize the sending and receiving of ground data instructions. The control acquisition mechanism 3 is also connected with the position judgment sensor 9, the electromagnetic flowmeter 18 and the pressure sensor respectively 21 is electrically connected to receive recorded data; wherein the position judgment sensor 9 is a displacement sensor. The reset mechanism 12 is fixed on the lower end of the positioning frame body 11; the reset mechanism 12 includes a housing and a spring, the housing is fixed with t...

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Abstract

The invention belongs to the technical field of oil field separated layer water-flooding and particularly provides a bridge type concentric integrated regulating apparatus for seal examining and single-layer direct detecting. The bridge type concentric integrated regulating apparatus comprises an upper joint, upper magnetic steel, a control collecting mechanism, an outer protective jacket, lower magnetic steel, a motor, a speed reducer, a shaft coupler, a position judging sensor, a limit position control mechanism, a positioning rack body, a return mechanism, a spring, a positioning anti-reverse claw, a transmission shaft, a flow meter probe, an electromagnetic flow meter, a flow passage, an upper clutch, a pressure sensor, an upper rubber barrel, a lower rubber barrel, a lower clutch, a regulating claw, a guide cone, and the like. According to the bridge type concentric integrated regulating apparatus for seal examining and single-layer direct detecting provided by the invention, functions of seal examining, hierarchy-flow testing and regulation, and the like for a packer are integrated, so that less interlayer interference is realized, flow testing precision efficiency of a layered water flood well is improved, and underground operation risks and construction cost are reduced.

Description

technical field [0001] The invention belongs to the technical field of layered water injection in oil fields, and specifically provides a bridge-type concentric integrated single-layer direct measurement and adjustment instrument for seal inspection. Background technique [0002] Fine water injection development in oilfields is a powerful means to maintain reservoir capacity and improve reservoir development effects. By adopting the new technology of bridge-type concentric layered water injection in Changqing Oilfield, the application of separate injection technology in highly deviated wells, deep wells and production areas has been greatly improved. The adaptability of water wells can effectively alleviate the phenomenon of tongue or fingering in low-permeability oilfields, improve the sweep efficiency of water flooding, and improve the effect of reservoir development. Domestic oil fields generally use eccentric water distribution string technology or concentric water distr...

Claims

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Application Information

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IPC IPC(8): E21B43/20E21B33/127
CPCE21B33/127E21B43/20
Inventor 杨玲智于九政罗必林毕福伟王子建刘延青庞洁
Owner PETROCHINA CO LTD