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Underground layered oil production control device

A layered oil recovery and control device technology, which is applied to wellbore/well valve devices, production fluids, earthwork drilling and production, etc., can solve the problem of low displacement, increase oil production, increase oil intake efficiency, The effect of improving work efficiency

Pending Publication Date: 2022-04-22
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the oil pump in the prior art can only be used for a single oil layer and has a low displacement, the present invention proposes a downhole layered oil recovery control device, which can simultaneously recover oil from multiple oil layers, effectively increasing the single oil recovery. Improved work efficiency

Method used

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  • Underground layered oil production control device

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A downhole layered oil production control device, comprising a hollow pump barrel 1, an inlet 11 for oil inlet is provided at the bottom of the pump barrel 1, and a fixed valve 3 inside the pump barrel 1 is provided at the inlet 11.

[0045] In the above embodiment, the pump barrel 1 is inserted into the downhole oil layer, and the bottom oil flow is absorbed into the pump barrel 1 through the inlet 11 .

[0046] There are two partitions 2 distributed up and down inside the pump barrel 1, and the two partitions 2 divide the inner space of the pump barrel 1 into three independent compartments 22 for the oil flow during the oil pumping and oil discharge process. provide storage space;

[0047] The outer wall of one side of the pump cylinder 1 is connected with three oil discharge assemblies, and the other side of the outer wall is connected with two oil inlet assemblies 5. The three oil discharge assemblies are respectively connected to a partition chamber 22, and the two...

Embodiment 2

[0067] The restriction that the primary oil inlet assembly 5 is located at the bottom of the segmented cavity 22 where the oil discharge assembly is located at the top of the range of the segmented cavity 22 is cancelled, refer to Figure 4 , only make the position of the oil discharge assembly within the scope of the divided chamber 22 higher than the position of the oil inlet assembly 5 .

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Abstract

The invention discloses an underground layered oil production control device, which belongs to the technical field of oil production, and is characterized in that partition cavities which are distributed up and down and are used for drawing oil from a plurality of oil layers are arranged in a pump cylinder, and a fixed valve and a traveling valve in a one-way conveying part are mutually opened and closed to control the oil drawing of the oil layers in the up-down stroke process of a driving part; oil flow in each oil layer can be adsorbed into the corresponding partition cavity and then is discharged through the corresponding oil discharge pipe of each partition cavity, so that each oil layer is provided with a corresponding oil flow channel, oil can be extracted from the multiple oil layers at the same time, and the oil layers are relatively independent and do not interfere with one another; the problem that oil flows of all oil layers interfere with each other in the oil drawing and oil discharging processes is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a downhole layered oil production control device. Background technique [0002] In the process of oil extraction, oil well pumps are generally used to control the pumping and drainage of oil, while the existing oil well pumps are used, such as figure 1 As shown, a single plunger reciprocates up and down inside the pump barrel, and under the mutual cooperation of the fixed valve and the floating valve, the downhole oil is pumped and drained. It can only be used for a single oil layer, and the single displacement is low, which leads to low work efficiency and affects oil production. Contents of the invention [0003] In order to solve the problem that the oil pump in the prior art can only be used for a single oil layer and has a low displacement, the present invention proposes a downhole layered oil recovery control device, which can simultaneously re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/06E21B43/12E21B43/14
CPCE21B34/06E21B43/121E21B43/14
Inventor 刘雪超吉程刘永为吴炳谦张广君潘桂娟王鹏辉李丽丽冷琨胡梦瑶肖大维韩洪伟姜元元张驰远李玲
Owner PETROCHINA CO LTD
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