A drilling and shut-off method for infill adjustment wells in oilfields

A technology for oilfields and oil production wells, which is applied in the field of oil field infill adjustment well drilling and closing, which can solve the problems of slugging in the third production well, slow pressure recovery, and large influence of water volume, so as to reduce the range of high pressure sweep, reduce injection pressure, and ensure The effect of drilling safety

Active Publication Date: 2022-05-20
DAQING PETROLEUM ADMINISTRATION +1
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  • Abstract
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Problems solved by technology

[0006] In view of this, the present invention provides a drilling and shutting method for infill adjustment wells in oil fields, which solves the problem of shutting down all water injection wells within a certain radius area centered on the well to be drilled in the existing general drilling and shutting technology, resulting in a large impact on water volume and slow pressure recovery , third production well slug loosening and other issues

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  • A drilling and shut-off method for infill adjustment wells in oilfields
  • A drilling and shut-off method for infill adjustment wells in oilfields
  • A drilling and shut-off method for infill adjustment wells in oilfields

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Embodiment Construction

[0040] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.

[0041] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0042] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".

[0043] The inventive concept of the application...

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Abstract

The invention discloses a drilling and closing method for infill adjustment wells in oil fields, which is characterized in that: the safety pressure line of each water injection well in the well area is determined; if the well to be drilled is within the safety pressure line, the water injection well is closed or lowered. The water injection well is injected with pressure, otherwise, the normal water injection of the water injection well is maintained; all the water injection wells in a certain radius area centered on the well to be drilled are all shut down in the existing general drilling and closing technology, so that the water volume has a large impact and the pressure recovery is slow. Problems such as slug loosening in the third production well.

Description

technical field [0001] The invention relates to a drilling and closing method for ensuring safe drilling when drilling an infill adjustment well in an oil field in the field of petroleum and natural gas drilling. Background technique [0002] Drilling off refers to a working method of shutting down water injection wells in a certain range nearby when drilling infill adjustment wells in oil fields, so as to reduce formation pressure and ensure safe drilling. [0003] The traditional drilling and closing technology formed in the 1980s centered on the well to be drilled and closed all water injection wells in a circular area with a certain radius (generally 450 meters or 300 meters). The number of water injection wells that need to be shut down has increased from a few at the beginning to dozens, and in areas with the highest well pattern density it is close to a hundred. [0004] Because the pressure conduction law and pressure sweep range of each water injection well in the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20G06T11/20
CPCE21B43/20G06T11/206
Inventor 王连生何俊才许明朋
Owner DAQING PETROLEUM ADMINISTRATION
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