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A bridge type concentric water distributor

A water distributor and bridge technology, which is applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of low success rate of instrument docking, inability to operate at the same time, poor deployment accuracy, etc., and achieve high docking success rate. , reduce workload and improve efficiency

Active Publication Date: 2018-09-04
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 solve the above-mentioned oilfield water injection testing and deployment process, which involves heavy workload, low success rate of instrument docking, poor deployment accuracy, and the test deployment and packer sealing cannot be operated at the same time. The problem of high volume and low work efficiency

Method used

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  • A bridge type concentric water distributor
  • A bridge type concentric water distributor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment provides a bridge-type concentric water distributor, such as figure 1 As shown, it includes an upper joint 1, the outer side of the lower end of the upper joint 1 is connected to the casing 2, the inner side of the lower end of the casing 2 is connected to the fixed faucet 4, and the outer side of the lower end of the fixed faucet 4 is connected to the lower joint 7, and the fixed faucet 4 is the middle pipe The wall is provided with a casing with a trumpet-shaped water outlet 8, the inner side of the upper end of the fixed water nozzle 4 is screwed to the outer side of the lower end of the anti-rotation positioning cylinder 3, and the lower end of the anti-rotation positioning cylinder 3 is provided with a radial water outlet opposite to the trumpet-shaped water outlet 8 9.

[0024] The inner side of the lower end of the fixed faucet 4 is fixed with the main cylinder 6, and the inner side of the main cylinder 6 is movably screwed to the movable faucet 5...

Embodiment 2

[0028] On the basis of Embodiment 1, this embodiment is further improved. In this embodiment, the fixed faucet 4 is provided with a bridge channel 15 along the axial direction, and the top of the anti-rotation positioning cylinder 3 is provided with a positioning groove, and the anti-rotation positioning A plurality of water-passing cutouts 11 are provided on the wall of the middle part of the cylinder 3 , and the water-passing cutouts 11 communicate with the bridge channel 15 of the fixed water nozzle 4 .

[0029] There is a positioning groove 16 at the top of the anti-rotation positioning cylinder 3, which cooperates with the positioning claw of the measuring and adjusting instrument to realize precise positioning. The upper part of the anti-rotating positioning cylinder 3 is provided with a number of water-passing cutouts 11, and the water-passing notches 11 are connected with the anti-rotation cam of the measuring and adjusting instrument. Cooperate to prevent the measuring...

Embodiment 3

[0031] In this embodiment, the structure in Embodiment 1 is further limited. The outer side of the upper part of the main body cylinder 6 is welded to the inner side of the lower part of the fixed faucet 4 in the form of welding. The middle part thread is connected, and the movable faucet 5 and the main cylinder 6 have the same axis.

[0032] Due to the complex downhole environment, there will be a lot of impurities and dirt, and the dirt will enter the thread along the gap under high pressure, causing thread corrosion and jamming. Therefore, in this embodiment, between the connecting surface of the upper joint 1 and the casing 2, the protective Between the lower end of the barrel 2 and the upper outer connection surface of the fixed faucet 4, and between the lower outer side of the fixed faucet 4 and the connection surface of the lower joint 7, the army is threadedly connected, and two O-rings 13 are provided on the connection surface , The rubber ring can protect the thread....

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Abstract

The invention provides a bridge type concentric water distributor which comprises an upper connector, a protecting drum, a fixed water nozzle and a lower connector which are sequentially in threaded connection. The fixed water nozzle is a sleeve with a middle pipe wall provided with a horn-shaped water outlet and is spirally connected with an anti-rotating locating drum, and the anti-rotating locating drum is provided with a radial water outlet opposite to the horn-shaped water outlet. A main body drum is fixed at the lower end of the fixed water nozzle, the inner side of the main body drum is spirally connected with a movable water nozzle, a ceramic ring is installed at the upper end of the movable water nozzle, the lower portion of the movable water nozzle is provided with an adjusting notch, an anti-rotating locating mechanism is provided with a water notch, and the water notch is communicated with a bridge type through hole in the fixed water nozzle. The movable water nozzle and the main body drum have the same axis, and the water injection amount can be adjusted only through the rotation of the movable water nozzle. The bridge type concentric water distributor is in downhole concentric butt joint with a concentric electric testing regulating examining seal integrated tester, the regulation of the water injection amount and the examining seal by a packer are performed simultaneously, the butt joint success rate is high, the workload is reduced, the efficiency is improved, and the requirements of layered water distribution of highly-deviated wells and deep wells are met.

Description

technical field [0001] The invention belongs to the field of oil field water injection, in particular to a bridge-type concentric water distributor used for water injection in a water injection well. Background technique [0002] In recent years, with the development and improvement of bridge eccentric and conventional eccentric injection technology, it has also been widely used in major oil fields. [0003] When conducting test deployment, according to the water distribution volume of each oil layer and the loss curve of the faucet, roughly select a faucet with a fixed size, put it into the plug, and put the plug into the water distributor with a fisher. Then use a flow meter to test the actual water injection volume of each layer. If the actual amount of water injection does not meet the requirements, it is necessary to remove the plug and faucet, replace the faucet and then put it into the water distributor, and so on until the water injection amount of this layer meets ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20
Inventor 毕福伟巨亚锋张随望于九政杨玲智罗必林王子建
Owner PETROCHINA CO LTD
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