An oil control and profile control device

A technology of profile control and base pipe, which is applied in the direction of wellbore/well components, production fluid, sealing/isolation, etc., can solve the problems of chemical agent damage to the reservoir, high cost, etc., and achieve the improvement of single well production and recovery, Suppresses water coning at the edge and bottom and increases flow resistance

Active Publication Date: 2021-07-13
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
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Problems solved by technology

The above methods have a certain effect on delaying the edge and bottom water coning of horizontal wells, prolonging the production cycle of oil wells, and improving the outflow profile, but there are disadvantages such as high cost, multiple operations, and chemical agents that damage the reservoir to a certain extent.

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  • An oil control and profile control device
  • An oil control and profile control device
  • An oil control and profile control device

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] figure 1 Shown is an oil control profile control device 100 according to the present invention. Such as figure 1 As shown, the oil control profile control device 100 includes an outer cylinder 1 , a base pipe 2 and a filter assembly 3 . Wherein, the base pipe 2 is sleeved in the inner cavity of the outer cylinder 1, and forms an annular space 4 with the outer cylinder 1 with an open upstream end and a closed downstream end. Flow holes 21 are provided on the wall of the base pipe 2 to connect the annular space 4 with the inner cavity of the base pipe 2 . The filter assembly 3 is arranged at the upstream end of the annular space 4 , and is used to supply the annular space 4 after filtering the fluid in the wellbore.

[0030] During the oil and gas development process of a horizontal well, the device 100 is installed on the production string, so that the fluid in th...

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Abstract

The present invention proposes an oil control profile control device, which includes an outer cylinder; a base pipe interferingly arranged in the outer cylinder; the base pipe and the outer cylinder form an annular space with an open upstream end and a blocked downstream end; A flow hole for connecting the inner cavity of the annulus space and the base pipe is arranged on the upper part; and a filter assembly communicated with the upstream of the annulus space. Using this device can increase the flow resistance of the fluid in the reservoir, thereby controlling the production rate of fluid in the reservoir corresponding to different sections of the horizontal well, and then adjusting the fluid production profile of the horizontal well, thereby inhibiting the edge-bottom water coning and delaying the flow of water. The water breakthrough time of flat wells can achieve the purpose of increasing single well production and recovery.

Description

technical field [0001] The invention relates to the technical field of oil and gas well completion, in particular to an oil control and profile control device. Background technique [0002] Compared with conventional vertical wells, horizontal wells increase the contact area between the wellbore and the reservoir, and the single well production is high. With the continuous improvement of horizontal well technology, more and more horizontal wells are used in the production and development of oil reservoirs. [0003] With the development of production and development, due to the long horizontal wellbore, the heterogeneity of reservoir rock and the anisotropy of permeability, and the different oil-water interfacial tensions lead to different outflow pressure differences between oil and water, it is very easy to be affected by edge and bottom water. The coning leads to a large amount of water production in the horizontal wellbore, and even the violent flooding of the horizontal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20E21B33/13
CPCE21B33/13E21B43/20
Inventor 赵旭李晓益张同义侯倩翟羽佳
Owner CHINA PETROLEUM & CHEM CORP
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