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One-pump multi-injection profile control device for oil field and profile control method

An oil field and profile control technology, which is applied to the valve device of wellbore/well, earthwork drilling and production of fluids, etc., can solve the problems such as the inability to meet the demands of oilfield profile control workload, etc., to improve profile control efficiency and work Efficiency and cost reduction effect

Pending Publication Date: 2020-11-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the original profile control technology can only carry out profile control operation on one water injection well by one profile control pump, which cannot meet the demand of oilfield profile control workload, the present invention provides a one-pump multi-injection profile control device and method for oilfield , can carry out profile control operation on two water injection wells at the same time, improve work efficiency and reduce operation cost

Method used

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  • One-pump multi-injection profile control device for oil field and profile control method
  • One-pump multi-injection profile control device for oil field and profile control method
  • One-pump multi-injection profile control device for oil field and profile control method

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Effect test

Embodiment 1

[0033] refer to figure 2 , in order to effectively improve the implementation efficiency of oilfield profile control operations and reduce the implementation cost, the profile control equipment has been improved and upgraded. Through the transformation at the outlet end of the profile control pump, one outlet has been changed into two outlets, and the purpose of separate distribution can be realized simultaneously. The profile control operation of the two water injection wells has greatly improved the work efficiency and reduced the operation cost. Theoretically, the construction cost can be reduced by 50%.

[0034] The end of the original profile control plunger pump has only one outlet, which is converted into two outlets by connecting the three-way device, and a steady flow water distributor is installed on the two outlet pipelines to achieve flow control, and the two outlet pipelines are respectively connected to the two injection ports. On the well, according to the prof...

Embodiment 2

[0043] refer to image 3 , a one-pump multi-injection profile control device, including a liquid distribution tank 1 and a profile control pump 2, the outlet of the liquid distribution tank 1 is connected to the inlet of the profile control pump 2 through a liquid inlet pipeline 9, and the outlet of the profile control pump 2 is connected to the connecting pipeline The inlet of 16 is connected, the outlet of connecting pipeline 16 is connected with the first end of the first outlet pipeline 7 and the first end of the second outlet pipeline 8, the second end of the first outlet pipeline 7 is the first outlet port, and the second outlet The second end of line 8 is the second outlet port. A sampling tube 15 is connected to the liquid inlet line 9 for sampling and testing the liquid flowing out of the liquid dosing tank 1 .

[0044] Among them, a first one-way stop valve 10 is installed on the connecting pipeline 16, and a second one-way stop valve 11, a first steady flow water d...

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Abstract

The invention discloses a one-pump multi-injection profile control device for an oil field and a profile control method. The profile control device comprises a liquid preparation tank and a profile control pump, wherein an outlet of the liquid preparation tank is connected with an inlet of the profile control pump through a liquid inlet pipeline, an outlet of the profile control pump is connectedwith an input connector of a multi-way pipe, a steady flow water distributor is installed on each output pipeline, each output connector of the multi-way pipe is connected with one output pipeline, and the outlet ends of the different output pipelines are connected to different water injection wells. According to the device, the profile control pump is used for setting the injection displacement,the steady flow water distributors are used for deploying the water injection wells respectively, then differentiated requirements can be met, and profile control operation is carried out on the waterinjection wells respectively. The device is used for profile control, the different water injection wells are subjected to profile control operation through the different outlet pipelines, thus the profile control efficiency is improved, and the operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a one-pump multi-injection profile control device and a profile control method for an oil field. Background technique [0002] As the development time of the oilfield becomes longer and longer, the water cut of crude oil rises gradually, the decline increases, and the production loss becomes more and more serious. It is necessary to carry out profile control technology to control the rise of water cut and draw more remaining oil. Especially in recent years, in the low-permeability oilfields represented by Changqing, the effect of water flooding has gradually deteriorated. In order to maintain the stable production of oilfields and national energy security, large-scale profile control work has been carried out, with the purpose of improving the effect of water flooding and achieving growth. The role of oil precipitation. [0003] Due to the increasing w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B47/00E21B34/02
CPCE21B43/20E21B47/00E21B34/02
Inventor 易萍周广卿何治武魏江伟张进科杨金锋贾玉琴薛芳芳张满张倩
Owner PETROCHINA CO LTD
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