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Reservoir perforating method and device

A perforation and oil hole technology, which is applied in earthwork drilling, wellbore/well components, production fluids, etc., can solve the problems of large productivity loss and severe sand production in oil and gas wells, and achieve the goal of reducing the degree of sand production, increasing productivity, evenly distributed effect

Active Publication Date: 2021-11-30
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for oil reservoir perforation, which can solve the problems of relatively large productivity loss and serious sand production in oil and gas wells in related technologies

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  • Reservoir perforating method and device
  • Reservoir perforating method and device
  • Reservoir perforating method and device

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] In related technologies, after the perforation density is determined, the staff will determine the perforation phase based on experience based on the perforation density, and then use the perforating gun to shoot oil holes according to the determined perforation phase, thereby establishing the connection between the wellbore and the formation. Allows fluid to enter the wellbore. Among them, the perforation density refers to the number of oil holes per meter, and the perforation phase refers to the deflection angle of the line connecting the center points of two adjacent oil holes relative to the vertical direction. In order to enable readers to understand the perforation phase more accurately, the perforation phase is now explai...

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Abstract

The invention discloses an oil reservoir perforating method and device, belonging to the technical field of oil field development. The method includes: obtaining the target perforation density when receiving the perforation instruction; querying the target perforation phase corresponding to the target perforation density from the preset correspondence, which records the perforation density and the perforation phase. The corresponding relationship of the perforation phase, the target perforation phase is used to perforate in the closed oil layer that has been casing, so as to form a number of uniformly distributed oil holes on the side wall of the casing, the target perforation phase is based on the The distance between the formed multiple oil holes is obtained. The invention solves the problems of relatively large productivity loss and relatively serious sand production in oil and gas wells in the related art, and achieves the effect of increasing the production capacity of oil and gas wells and reducing the degree of sand production. The invention is used for oil reservoir perforation.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to an oil reservoir perforating method and device. Background technique [0002] In the process of oil production, it is necessary to use perforation technology to form oil holes of a certain depth in the closed oil layer that has been casing, so as to establish the connection between the wellbore and the formation, so that fluid can enter the wellbore and realize the normal production of oil and gas wells. [0003] At present, after determining the perforation density, the staff will empirically determine the perforation phase according to the perforation density, and then use the perforating gun to shoot the oil hole according to the determined perforation phase, so as to establish the connection between the wellbore and the formation, so that the fluid able to enter the wellbore. Among them, the perforation density refers to the number of oil holes per meter, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/11
CPCE21B43/11
Inventor 宋友贵赵广天郑小雄王新红
Owner PETROCHINA CO LTD
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