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A bridge-type concentric profile control water distribution and injection device and its process method

A process method and water distribution technology, which can be used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of low operation efficiency and large operation workload, reduce operation costs, and improve layered profile control efficiency. and success rate

Active Publication Date: 2018-06-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of heavy workload and low working efficiency of existing devices, the present invention provides a bridge-type concentric profile control water distribution and injection device and process method. The profile control agent injection process meets the low shear effect and solves the problem of layered profile control. Complicated operation procedures, large shearing of profile control agents, and high operational risks have greatly improved the efficiency and success rate of layered profile control of separate injection wells and reduced operating costs

Method used

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  • A bridge-type concentric profile control water distribution and injection device and its process method
  • A bridge-type concentric profile control water distribution and injection device and its process method
  • A bridge-type concentric profile control water distribution and injection device and its process method

Examples

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Embodiment 1

[0023] In order to overcome the problems of large operating workload and low operating efficiency of existing devices, the present invention provides such figure 1 , figure 2 , image 3 , Figure 4 A bridge-type concentric profile control water distribution and injection device and process method are shown. The profile control agent injection process meets the low-shear effect, and solves the problems of complex layered profile control operations, large shearing of the profile control agent, and high operational risks. , greatly improve the efficiency and success rate of layered profile control of separate injection wells, and reduce operating costs.

[0024] A bridge-type concentric profile control water distribution device, comprising a bridge-type concentric profile control water distribution device 21 and a profile control plug 22, the profile control plug 22 is located inside the bridge-type concentric profile control water distribution device 21, the bridge-type The ...

Embodiment 2

[0036] On the basis of Embodiment 1, in this embodiment, the profile control plug 22 is composed of a fishing head 13, a cam machine 14, a positioning claw 15, a sealing rubber cylinder 16, an annular leather cup 17 and a guide head 18. Fishing head 13 is sequentially connected with cam machine 14, positioning claw 15, sealing rubber tube 16, annular cup 17 and guide head 18, and described cam machine 14 is connected with positioning claw 15, controls the contraction and release of positioning claw 15.

[0037] The upper end of the concentric adjustment cylinder 4 is also connected with a positioning anti-reverse cylinder 2 , and the positioning anti-reverse cylinder 2 is located in the connecting cylinder 3 . Positioning the anti-rotation cylinder 2 prevents the device from tipping over.

[0038] The fixed nozzle 5 is provided with a drop-shaped hole 19 . By designing the drop-shaped water outlet, the water nozzle is adjusted to the narrow part of the water drop to meet the ...

Embodiment 3

[0040] On the basis of Example 1, in this example, a bridge-type concentric profile control and water distribution multifunctional injection process method, the specific steps are:

[0041] S1, the surface equipment steel wire 20 is connected to the profile control plug 22 and lowered into the well, and the profile control plug 22 is lifted up through the bridge-type concentric profile control water distribution and injector 21, and the profile control plug cam 14 is under the action of the sealing section 12, Open the positioning claw 15;

[0042] S2, the profile control plug 22 is lowered, the positioning claw 15 is docked with the setting platform 10, the annular cup 17 controls the sealing rubber cylinder 16 to set in the sealing section 12, and seals the pipe string below the dispenser;

[0043] S3, the fishing tool is lowered to dock with the fishing head 13, the profile control plug 22 is pulled upwards, the annular cup 17 controls the sealing rubber cylinder 16 to be u...

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PUM

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Abstract

The invention provides a bridge type concentric profile control water injection allocation apparatus. The bridge type concentric profile control water injection allocation apparatus is composed of a bridge type concentric profile control water injection allocation unit and a profile control stopper. The bridge type concentric profile control water injection allocation unit is composed of an upper joint, a positioning and anti-reverse cylinder, a connecting cylinder, a concentric adjusting cylinder, a main body, a fixed pedestal and a lower joint. The invention also provides a bridge type concentric profile control water injection allocation process, and belongs to the technical field of oil field separated layer water injection. According to the invention, bridge type concentric water injection well profile control operation can be carried out without pulling strings, a profile control agent injection process meets low-shear requirements, problems in the prior that a profile control operation process is complex, a profile control agent is subjected to high shear effects, and the operation has large risks are solved, the water injection well separated layer profile control efficiency and success rate are greatly improved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to a bridge-type concentric profile control water distribution and injection device and a process method thereof, belonging to the field of oilfield water injection. Background technique [0002] With the continuous improvement of the refined development of reservoirs, higher requirements are put forward for the level of separate injection technology. Changqing Oilfield has developed a new generation of separate injection technology, that is, bridge concentric separate injection technology. This technology consists of bridge concentric It consists of a water device, a concentric electric downhole measuring and adjusting instrument, an electric sealing inspection instrument, and a ground controller. At present, the profile control process of separate injection wells still needs to pull out the original well string, run in a special profile control string, and perform layer-by-layer profile control operations. Large, low operating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20
CPCE21B43/20
Inventor 杨玲智于九政罗必林毕福伟王子建刘延青
Owner PETROCHINA CO LTD