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Oil well fluid self-adaption device and fluid control device

A fluid control device and self-adaptive technology, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., and can solve the problems that cannot meet the development needs of high water-cut oil wells in oil fields

Pending Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an oil well fluid adaptive device and a fluid control device to solve the problem that the adaptive inflow control device in the prior art cannot meet the development needs of oil wells with high water cut

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  • Oil well fluid self-adaption device and fluid control device
  • Oil well fluid self-adaption device and fluid control device
  • Oil well fluid self-adaption device and fluid control device

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] see Figure 1 to Figure 4 , the present invention provides a technical solution:

[0034] An oil well fluid self-adaptive device, comprising an oil pipe 5, an outer pipe 4, and a fluid control device, the oil pipe is concentrically placed inside the outer pipe, and an annular channel is formed between the oil pipe and the outer pipe, and the outer pipe is opened with an outer Pipe fluid inlets 1, 2, 3, the oil pipes are provided with radial fluid contr...

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Abstract

The invention discloses an oil well fluid self-adaption device and a fluid control device. The oil well fluid self-adaption device comprises an oil pipe and an outer pipe and further comprises the fluid control device, the oil pipe is concentrically arranged in the outer pipe, an annular channel is formed between the oil pipe and the outer pipe, the outer pipe is provided with an outer pipe fluidinlet, the oil pipe is provided with a radial fluid control port, and the radial fluid control port is provided with the fluid control device. The oil well fluid self-adaption device can automaticallyadjust flowing resistance passing through the oil well fluid self-adaption device according to fluid properties, specifically, when the water content is low, the oil well fluid self-adaption device has certain resistance to a fluid, the influence of the heel end effect and reservoir heterogeneity can be offset, and a production profile is propelled in a balanced mode; and along with the increaseof the water content, the flowing resistance of the fluid control device is remarkably increased, the flow of a water outlet layer section is remarkably inhibited, and long-term stable production of an oil-gas well is guaranteed.

Description

technical field [0001] The invention relates to the technical field of devices for improving oilfield development effects, in particular to an oil well fluid adaptive device and a fluid control device. Background technique [0002] In the process of oilfield development, due to the influence of reservoir heterogeneity and other factors, the production of oil wells at different positions is different, and the unbalanced advancement of the production profile will lead to premature water / gas breakthrough at high production positions. Once water / gas breakthrough occurs, well production will be significantly reduced. Completion methods such as staged perforation and variable density perforation can balance the production profile to a certain extent. However, these methods have limited ability to control the production profile and cannot effectively control water / gas. [0003] As of 2018, a variety of passive inflow control devices and adaptive inflow control devices have been d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
CPCE21B43/12
Inventor 赵麟王增林张全胜贾庆升古光明智勤功刘丙生姜东刘廷峰孟永
Owner CHINA PETROLEUM & CHEM CORP
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