Multilayer-gas-lift water exploration device for oil field and water exploration method thereof

A gas lift and oil field technology, which is applied to earth-moving drilling, wellbore/well components, etc. It can solve the problems such as the inability to measure the liquid production profile of the oil layer, and the inability to meet the multi-layered oil production, so as to avoid interlayer interference. , Simple structure, avoid the effect of jamming

Inactive Publication Date: 2018-03-20
QINGYANG DUNBO TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Or use the single-pump mixed pumping method, and use the constant pressure distribution device to adjust the production pressure difference of the oil layer to complete layered oil production. The pressure of the constant pressure distribution device has been set before the tool goes into the well. This technology cannot be satisfied with multi-layer The oil production section of the oil layer cannot be measured

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  • Multilayer-gas-lift water exploration device for oil field and water exploration method thereof

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example 1

[0017] A kind of multi-layer gas lift water seeking device used in oil field, such as figure 1 As shown, it includes a wellhead device 1, a gas lift string 2, a production string 3, a packer 4, a switch actuator 5, a layer switch 6, a piston 7, a return spring 8, a support arm 9, and a casing 10, A water-seeking layer 11; a packer 4 is installed between each water-seeking layer, and a production string 3 is installed inside the casing 10; a gas lift string 2 is installed inside the production string 3, and a return spring 8 is arranged outside, A mandrel is connected below; a wellhead device 1 is provided above the gas lift string 2, and a switch actuator 5 is connected below, and the switch actuator 5 extends into the mandrel, and a support arm 9 and a piston 7 are arranged inside the mandrel; Layer switches 6 are arranged on both sides, and the lower end is connected with the next water-seeking layer 11 .

[0018] The water finding method of the multi-layer gas lift water f...

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Abstract

The invention relates to an oil-field water exploration device, in particular to a multilayer-gas-lift water exploration device. The multilayer-gas-lift water exploration device aims at achieving theeffects that multilayer repeating layer-adjusting water exploration can be achieved, layer limiting is avoided, and the water exploration efficiency is improved. The multilayer-gas-lift water exploration device comprises a well opening device (1), a gas-lift pipe column (2), a production pipe column (3) and water exploration layers (11); layering switches (6) are installed at the portions, corresponding to all the water exploration layers (11), on the production pipe column (3), and all the water exploration layers (11) are partitioned through packers (4); after the packers (4) are closed, a switch starter (5) enters a well along with the gas-lift pipe column (2) together, liquid is explored, and then the oil-water content of the explored liquid is analyzed to judge whether the layer is awater layer or not, and layering is accurate. The multilayer-gas-lift water exploration device has the advantages that the structure is simple, operation is flexible, lifting is convenient, and the clamping phenomenon is avoided; layering is accurate, multilayer repeating water exploration can be achieved through once pipe column, and layer section limiting is avoided.

Description

technical field [0001] The invention relates to an oil field water finding device, in particular to a multi-layer gas lift water finding device and a water finding method for the oil field. Background technique [0002] Due to the rapid development of our country's economy and the improvement of people's living standards, the amount of oil used has also greatly increased. In order to use the hydraulic drive method to obtain the highest yield among various driving methods, to replenish energy for the oil layer, keep the pressure of the oil layer unchanged, and prolong the self-spraying time. During the oil recovery period, increase the development speed of the oil field, increase the recovery rate, increase the formation pressure, stabilize the pressure and drive the oil, and increase the crude oil production; the oil field has developed a large area of ​​water injection, and due to factors such as fracturing and cementing quality, the interlayer and extralayer The series of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/08
CPCE21B49/084E21B49/088
Inventor 房世平
Owner QINGYANG DUNBO TECH DEV CO LTD
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