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Oil-water separate mining pipe column and oil-water separate mining method

A water and pipe string technology, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problems of low oil and water recovery and low production, shorten the time-consuming of separate production, increase the Ease of recovery and fractional mining

Inactive Publication Date: 2020-06-26
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide an oil-water recovery string and an oil-water recovery method to solve the problems of low oil recovery and low yield in the prior art

Method used

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  • Oil-water separate mining pipe column and oil-water separate mining method
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  • Oil-water separate mining pipe column and oil-water separate mining method

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0025] In the present invention, in the absence of a contrary statement, the used orientation words such as "up and down" usually refer to the direction shown in the drawings, or refer to the vertical, vertical or gravity direction Similarly, for the convenience of understanding and description, "left and right" usually refer to the left and right shown in the drawings; The words are not used to limit the invention.

[0026] In order to solve the problems o...

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Abstract

The invention provides an oil-water separate mining pipe column and an oil-water separate mining method. The oil-water separate mining pipe column comprises a sleeve, an oil pipe, a hollow sucker rod,an oil-water separate mining device, an electric submersible pump assembly and a packer, wherein the oil pipe is arranged inside the sleeve; the hollow sucker rod is movably arranged inside the oil pipe; the oil-water separate mining device is arranged on the oil pipe and is provided with a first channel which allows oil to flow and a second channel which allows water to flow, the oil-water separate mining device further comprises a tubing pump assembly, and the hollow sucker rod is arranged inside the oil-water separate mining device in a penetrating mode and is connected with the tubing pump assembly; the electric submersible pump assembly is arranged on the oil pipe; and the packer is arranged on the oil pipe. By means of the electric submersible pump assembly, the water in the sleeveis conveyed into the second channel through the oil pipe, and the water is discharged out of the oil-water separate mining pipe column through the annular space between the oil pipe and the hollow sucker rod. By means of the hollow sucker rod, the tubing pump assembly is driven to move in the oil-water separate mining device so that the oil entering the first channel is discharged out of the oil-water separate mining pipe column through the hollow sucker rod. By means of the oil-water separate mining pipe column and the oil-water separate mining method, the problem that in the prior art, the recovery ratio of oil-water separate mining is low is solved.

Description

technical field [0001] The invention relates to the technical field of oil well exploitation, in particular to an oil-water recovery pipe string and an oil-water recovery method. Background technique [0002] At present, in the middle and later stages of production in bottom water reservoirs, due to bottom water coning, oil wells will inevitably experience water breakthrough. If reasonable and effective water control measures are not taken, it will cause serious decline in production, decline in recovery rate, and poor development effect. become worse, and the remaining oil in some oil layers cannot be recovered. At the same time, the increase of produced water also increases the processing burden of ground equipment and increases the cost of production. [0003] In the prior art, in order to reduce the influence of bottom water coning, a double-acting pump is used to separately recover oil and water downhole. However, the above separate recovery technology has the problem...

Claims

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Application Information

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IPC IPC(8): E21B43/16
CPCE21B43/16
Inventor 王洋雷德荣张辉孟胡姚满仓黄晓东陈瑞祥迪力夏提·吐尔逊巴克·海肉拉孙新
Owner PETROCHINA CO LTD
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