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Sand control screen pipe and design method thereof

A technology of sand control screen and design method, which is applied in the directions of earth-moving drilling, production fluid, wellbore/well components, etc., can solve the problems of poor adaptability, single design of sand control screen, damage and so on.

Inactive Publication Date: 2021-07-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a sand control screen and its design method to solve the problem that the original sand control screen has a single design and poor adaptability in some areas, resulting in sand control failure or even damage

Method used

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  • Sand control screen pipe and design method thereof
  • Sand control screen pipe and design method thereof
  • Sand control screen pipe and design method thereof

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Embodiment approach 1

[0031] Such as figure 1 and figure 2 As shown, the present invention provides a sand control screen, including a screen body 1, the screen body 1 is provided with a plurality of slots 11, and the slots 11 penetrate the wall thickness of the screen body 1, The area of ​​the outer opening 111 of the slot 11 is smaller than the area of ​​the inner opening 112 of the slot 11 , and the area of ​​the inner opening 112 of the slot 11 is determined according to the pressure of the formation and the average diameter of sand particles in the formation.

[0032] Specifically, the screen body 1 is generally in the shape of a cylinder, and a plurality of slots 11 are arranged on the screen body 1, and these slots 11 penetrate the wall thickness of the screen body 1, thereby communicating with the inner channel of the screen body 1 And the outside of the screen body 1. In this embodiment, the plurality of slots 11 on the screen body 1 are divided into a plurality of slot groups 12 arrang...

Embodiment approach 2

[0045] Such as Figure 1 to Figure 4 As shown, the present invention also provides a sand control screen design method for manufacturing the sand control screen described in Embodiment 1. The design method includes the following steps: according to the pressure of the formation and the average diameter of the sand grains in the formation The area of ​​the inner opening 112 of the slot 11 of the sand control screen;

[0046] Wherein, the sand control screen comprises a screen body 1, and the screen body 1 is provided with a plurality of slots 11, and the slots 11 run through the wall thickness of the screen body 1, and the outer openings of the slots 11 are The area of ​​111 is smaller than the area of ​​the inner opening 112 of the slot 11 .

[0047]In this embodiment, the area of ​​the inner opening 112 of the slot 11 is also determined according to the yield of the formation.

[0048] Further, the area of ​​the inner opening 112 of the slot 11 is also determined according ...

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Abstract

The invention provides a sand control screen pipe and a design method thereof. The sand control screen pipe comprises a screen pipe body, a plurality of kerfs are formed in the screen pipe body and penetrate through the wall thickness of the screen pipe body, the area of an opening in the outer side of each kerf is smaller than that of an opening in the inner side of each kerf, and the area of the opening in the inner side of each kerf is determined according to the pressure of a stratum and the average diameter of stratum sand grains. According to the sand control screen pipe and the design method thereof, the problems that an original sand control screen pipe is single in design and poor in adaptability in part of areas, so that sand control fails and even is damaged are solved.

Description

technical field [0001] The invention relates to the technical field of oilfield development and design, in particular to a sand control screen and a design method thereof. Background technique [0002] In the production process of oil and gas wells, sand control technology has a direct impact on the quality and production effect of oil and gas wells, and is also related to the life of oil and gas wells, so sand control technology is very important in the production process of oil and gas wells. Among them, the most commonly used sand control tool in the production process of oil and gas wells is the sand control screen, which can block the sand particles in the formation output from the sand control screen through the sand control screen, which can play a very good role in sand control, thereby preventing oil wells from Sand out causes the pump to get stuck. [0003] The gaps on the sand control screen currently used are produced by laser cutting on the casing. The outer di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/08
CPCE21B43/086
Inventor 张国辉陈荣王鹏胡贵张希文
Owner PETROCHINA CO LTD
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