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Trinity quantitative water injection device

A three-in-one, water distribution device technology, applied in the fields of production fluids, wellbore/well components, earthwork drilling, etc., can solve the problems of complex sealing inspection, poor pressure bearing capacity of packers, and cumbersome casting and distribution process, etc. Check and replace the convenient effect of the faucet

Active Publication Date: 2018-10-19
CHENGDU NORTH OIL EXPLORATION DEV TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the defects of the existing supporting tools for layered water injection, such as cumbersome throwing and fishing process of the water distribution device, difficulty in setting the size of the control nozzle, poor pressure bearing capacity of the packer, and complicated seal inspection, the present invention provides an oil field separation device. Three-in-one quantitative water injection device used in layer water injection technology

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, the three-in-one quantitative water injection device includes a working cylinder 1 and a water distribution core 2 arranged in the working cylinder 1. The water distribution core 2 is composed of three identical water distribution devices 3. The water outlet A4 set on the water distribution device 3 is connected to the working The water outlet B5 opened on the cylinder 1 corresponds; the working cylinder 1 is composed of an upper cylinder body 6, a middle cylinder body 7, a lower cylinder body 8 and two isolation devices 9; one of the isolation devices 9 is set on the upper cylinder Between the middle cylinder body 6 and the middle cylinder body 7, another sealing device 9 is arranged between the middle cylinder body 7 and the lower cylinder body 8.

[0036] The traditional water injection process adopts the working principle of graded water distribution and single use, that is, one water distribution core 1 is arranged on one layer. The fishi...

Embodiment 2

[0039] This embodiment is on the basis of embodiment 1, as figure 2 As shown, the water distribution device 3 includes an outer cylinder 10, a water nozzle 11 arranged in the outer cylinder 10; Ring 13, the protruding ring 13 is provided with a second water inlet 14 that runs through the front and rear end faces of the protruding ring 13, and the protruding ring 13 is provided with a water outlet A4 radially penetrating the outer cylinder 10, and the water outlet A4 is not connected to the second water inlet 14 A third water inlet 15 is provided at the bottom of the outer cylinder, and the third water inlet 15 communicates with the second water inlet 14; the water nozzle 11 includes a plunger 16, and the plunger 16 is composed of a large diameter section 161 and a small diameter section 162, The large-diameter section 161 is slidably arranged on the convex ring 13, and the outer surface of the large-diameter section 161 is in contact with the inner surface of the convex ring 13...

Embodiment 3

[0051] On the basis of Embodiment 2, this embodiment also includes a connecting column A20 and a connecting column B21. The two ends of the connecting column A20 are respectively connected to the bottom of the upper water distribution device 3 and the top of the Chinese water distribution device 3. The bottom of the Chinese water distribution device 3 and the top of the lower water distribution device 3 are connected; the outer surface of the connecting column A20 and the inner surface of the working cylinder 1 form a popular channel A22, and the outer surface of the connecting column B21 and the inner surface of the working cylinder 1 form a popular channel B23. The upper cylinder body 6 is provided with an upper channel 24 , one end of which runs through the front end of the upper cylinder body 6 , and the other end communicates with the popular channel A.

[0052] This embodiment can realize the water injection to the middle water injection layer, specifically as follows: wa...

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Abstract

The invention provides a triune quantitative water injection device. The triune quantitative water injection device comprises a working barrel and a water distributing core, wherein the water distributing core is arranged in the working barrel and consists of three identical water distributing devices; a water outlet A formed in each water distributing device corresponds to a water outlet B formed in the working barrel; the working barrel consists of an upper barrel body, a middle barrel body, a lower barrel body and two packer devices; one of the packer devices is arranged between the upper barrel body and the middle barrel body; and the other packer device is arranged between the middle barrel body and the lower barrel body. Water nozzles are convenient to change, and can be fed and fished conveniently and quickly. Hydraulic fishing is implemented, the water nozzles are directly fed in a well from a wellhead, a steel wire rope and a pump truck are not required, and the two water nozzles can be examined at one step and can be used for injecting water in an inclined shaft separately.

Description

technical field [0001] The invention relates to a water injection device, in particular to a three-in-one quantitative water injection device used in oil field layered water injection technology. Background technique [0002] At present, oilfield layered water injection wells have the characteristics of large workload and high cost of pulling, deploying, deploying, and layering testing. Under the current situation of increasingly tight oilfield costs, how to improve the effect of layered water injection and reduce the production cost of the oilfield is an oilfield decision. a problem faced by the reader. In this case, the use and popularization of new layered water injection technology is a good way to improve the water injection effect in oilfields and reduce production costs. [0003] As we all know, the supporting tools for layered water injection are mainly composed of two downhole tools: a water distribution device and a packer. [0004] 1. Water distribution device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20
CPCE21B43/20
Inventor 卢立泽王贺华张健刘榧周长江高健成一米中荣
Owner CHENGDU NORTH OIL EXPLORATION DEV TECH
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