Oil production water control apparatus, directional well completion oil production pipe and completion method thereof

A technology of water control device and oil production pipe, which is applied in wellbore/well components, production fluid, earthwork drilling, etc., can solve the problems of high construction risk, poor water control pertinence, complicated post-management and operation, etc.

Pending Publication Date: 2018-04-24
BEIJING CONOVA-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Currently, the water plugging measures commonly used in directional wells mainly include hole refilling, chemical water plu

Method used

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  • Oil production water control apparatus, directional well completion oil production pipe and completion method thereof
  • Oil production water control apparatus, directional well completion oil production pipe and completion method thereof
  • Oil production water control apparatus, directional well completion oil production pipe and completion method thereof

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Embodiment Construction

[0054]In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0055] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may al...

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Abstract

The present invention discloses an oil production water control apparatus, a directional well completion oil production pipe and a completion method thereof. The water control apparatus comprises an outer pipe; a central pipe sleeved in the outer pipe; a pipe wall of the central pipe is provided with a fluid through hole penetrating the inside thereof; and a water control mechanism installed between the outer pipe and the central pipe. The water control mechanism has an approximately disc-shaped swirling flow cavity, inflow ports, an outflow port, and inflow passages; the cross-section shape of the swirling flow cavity radially vertical to the central pipe is circular and the center line is parallel to the radial direction; the outflow port communicates the swirling flow cavity and the fluid through hole; the inflow passages communicates the inflow ports and the swirling flow cavity; and the inflow passages penetrate the swirling flow cavity so that fluid input into the swirling flow cavity can form swirling flow. The water control apparatus can automatically adjust generated additional resistance according to fluid flow and fluid physical property of a producing horizon, and the influence of oil reservoir heterogeneity can be reduced.

Description

technical field [0001] The invention relates to the technical field of oilfield well completion, in particular to an oil production and water control device, a well completion and production pipe string for directional wells and a well completion method. Background technique [0002] As oil wells enter the middle and late stages of development, the water content of most oil wells begins to rise, which greatly affects the development effect of oil wells. There will still be problems of high water cut, low production and low efficiency, so these low-efficiency directional wells must undergo workover and secondary completion reconstruction, so as to revitalize the asset stock and improve the oilfield development effect. [0003] Currently, the water plugging measures commonly used in directional wells mainly include hole refilling, chemical water plugging, and layered mining. A series of problems such as large layer damage, high cost, or cumbersome post-management and operatio...

Claims

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Application Information

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IPC IPC(8): E21B43/16E21B33/12
CPCE21B33/12E21B43/16
Inventor 陈彦洪
Owner BEIJING CONOVA-TECH CO LTD
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