Method and device for removing blockage of stratum, storage medium and computer equipment

A technology for formation and blockage removal, which can be used in calculations, earth-moving drilling, wellbore/well components, etc. It can solve problems such as poor performance and achieve less pollution.

Pending Publication Date: 2022-05-13
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for some soil formations, for example, formations with high sediment content, the effect of using acidified liquid for plugging removal is poor

Method used

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  • Method and device for removing blockage of stratum, storage medium and computer equipment
  • Method and device for removing blockage of stratum, storage medium and computer equipment
  • Method and device for removing blockage of stratum, storage medium and computer equipment

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Embodiment Construction

[0048] In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings.

[0049] The embodiment of the present application provides a method for unclogging a formation. Such as figure 1 As shown, the method includes the following steps:

[0050] Step 101, obtaining the well conditions of the energy collection wells connected to the formation to be unblocked.

[0051] Optionally, the energy collection well may be a gas production well or an oil production well, etc., which are not specifically limited in this embodiment of the present application.

[0052] Step 102. Based on the well conditions, determine the conditions that the injection pipelines that need to be installed in the wellbore of the energy collection well need to meet, and instruct to set up the injection pipelines that meet the conditions in the wellbore, and the first end of the i...

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Abstract

The invention relates to a method and device for removing blockage of a stratum, a storage medium and computer equipment, and belongs to the field of oil and gas exploitation. The method comprises the steps that the well condition of an energy collection well communicated to a stratum to be unblocked is obtained; on the basis of the well condition, the conditions needing to be met by an injection pipeline arranged in a shaft of the energy collection well are determined, the injection pipeline meeting the conditions is indicated to be arranged in the shaft, the first end of the injection pipeline is connected with a well opening of the energy collection well, and the second end of the injection pipeline is connected with the well opening of the energy collection well. The second end of the injection pipeline is communicated with the stratum to be unblocked; and the injection pipeline is indicated to inject carbon dioxide into the to-be-unblocked stratum, so that the to-be-unblocked stratum is unblocked under the action of the carbon dioxide. According to the invention, effective plugging removal can be carried out on the stratum.

Description

technical field [0001] The present application relates to the field of oil and gas exploitation, in particular to a method and device, a storage medium, and computer equipment for unblocking formations. Background technique [0002] During the drilling of energy collection wells (such as oil production wells or gas production wells), fluids such as water-based drilling fluids and well killing fluids will enter the formation, and these fluids will cause formation water-sensitive damage near the wellbore, resulting in pollution and blockage near the wellbore. The pollution blockage will affect the development of the energy collection well, therefore, it is necessary to unblock the pollution blockage. [0003] In related technologies, acidizing fluid is usually injected into energy collection wells, so that the formation to be unplugged can be unplugged under the action of the acidizing fluid. [0004] However, for some soil formations, for example, formations with high sedime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/16E21B43/26G06Q50/02
CPCE21B43/164E21B43/26G06Q50/02Y02P90/70
Inventor 构小婷赵玉东郝桂宪田福春刘学伟贾云鹏贾国龙闫阳杨立永尹顺利赵涛赵冬华
Owner PETROCHINA CO LTD
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