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Oil deposit perforation method and device

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

Active Publication Date: 2019-10-22
PETROCHINA CO LTD
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  • Abstract
  • Description
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  • Application Information

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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

Method used

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  • Oil deposit perforation method and device
  • Oil deposit perforation method and device
  • Oil deposit perforation 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 deposit perforation method and device, and belongs to the technical field of oilfield development. The method comprises the steps that when a perforation command is received, the target perforation density is obtained; and the target perforation phase corresponding to the target perforation density is inquired in a preset corresponding relationship, the correspondingrelationships of perforation densities and perforation phases are recorded in the preset corresponding relationship, the target perforation phase is used for carrying out perforation in a closed oillayer of a lowered casing pipe so as to form multiple evenly-distributed oil holes in the side wall of the casing pipe, and the target perforation hole is obtained based on the distance between the multiple to-be-formed oil holes. The problems that in the correlation technique, capacity losses are large in oil-gas wells, and shakeout is quite serious are solved, and the effects of improving the capacity of the oil-gas wells and reducing the shakeout degree are achieved. The oil deposit perforation method and device are used for oil deposit 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 Applications(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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