Large-pressure-differential separate injection multi-stage regulation and control water distributor

A technology of large pressure difference and water distributor, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of large difference between high and low permeability layers, etc.

Active Publication Date: 2020-10-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a large pressure differential injection multi-stage control water distributor, which can solve the problem of separate water injection in large pressure differential wells with large differences between high and low permeability layers in the related art

Method used

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  • Large-pressure-differential separate injection multi-stage regulation and control water distributor

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0043] figure 1 It is a structural schematic diagram of a large pressure differential injection multi-stage control water distributor provided in the embodiment of the application. see figure 1 , the large pressure differential injection multi-level control water distributor includes: upper joint 1, connecting sleeve 2, main body seat 3, positioning platform 4, rotating body 5, adjusting core rod 6, main body 7, lower joint 8, screw sleeve cylinder 9, adjustment gear 10, transmission gear 11, first adjustment member 12, adjustment rod 13, fixed sleeve 14 and sealing plug 15. The first end of the connecting sleeve 2 is connected to the first end of the upper joint 1, and the inner cavity of the connecting sleeve 2 communicates w...

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Abstract

The invention discloses a large-pressure-differential separate injection multi-stage regulation and control water distributor, and belongs to the field of oil field water injection. The inner wall ofan adjusting gear of the large-pressure-differential separate injection multi-stage regulation and control water distributor is connected with the outer wall of a rotating body, a transmission gear ismeshed with the adjusting gear, and the transmission gear sleeves an adjusting core rod, so that when the rotating body rotates, the adjusting gear, the transmission gear and the adjusting core rod rotate in sequence. Due to the fact that the inner wall of a lead screw sleeve is in threaded connection with the outer wall of the adjusting core rod, the adjusting core rod moves up and down along threads arranged on the inner wall of the lead screw sleeve while the adjusting core rod rotates, and a first adjusting part and an adjusting rod are further driven to move up and down. Therefore, an overflowing gap between a first-stage throttling mechanism formed by the first adjusting part and a liquid entering nozzle and a second-stage throttling mechanism formed by the adjusting rod and a fixing sleeve is gradually increased or decreased, so that water flow is subjected to two-stage pressure regulation and flow control, the water injection amount is adjusted more finely, and the requirementfor fine water injection of a separate injection well and especially a large-pressure-differential separate injection well is met.

Description

technical field [0001] The application relates to the field of water injection in oil fields, in particular to a multi-stage control water distributor for large-pressure differential injection. Background technique [0002] In heterogeneous oilfields, there are differences in the permeability between the oil layers in the horizontal and vertical directions. During water injection, the high permeability layer and the lower permeability layer are easy to absorb water, and the water sucked into the high permeability layer will be absorbed in the high permeability layer. The low-permeability layer absorbs very little water, especially when injecting water into the high-permeability and low-permeability layers with large differences, which will easily lead to over-injection of the high-permeability layer and under-injection of the low-permeability layer. Therefore, it is necessary to control the amount of water injection in oil layers with different permeability (namely layered w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20
CPCE21B43/20
Inventor 杨天成胡金铜王文韬舒畅韩增辉
Owner PETROCHINA CO LTD
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