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Fracturing pump-injection method

A technology of fracturing pumps and fracturing trucks, which is applied in the field of fracturing pump injection, which can solve the problems of low utilization rate of fracturing equipment, achieve the effect of improving equipment utilization rate and ensuring net pressure

Active Publication Date: 2019-07-23
PETROCHINA CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a fracturing pump injection method to solve the problem of low utilization rate of fracturing equipment in the prior art

Method used

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  • Fracturing pump-injection method

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] Such as figure 1 and figure 2 As shown, the embodiment of the present invention provides a fracturing pumping method, the fracturing pumping method includes:

[0019] S100. Set a preset construction pressure according to wellhead and pipe string parameters. Among them, the wellhead and str...

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Abstract

The invention provides a fracturing pump-injection method. The fracturing pump-injection method comprises the steps that preset construction pressure is set according to parameters of a wellhead and apipe column; fracturing substances are injected into a formation by a fracturing pump according to the preset construction pressure; the fracturing pump is subjected to pressure detection, and an actual pressure value is obtained; and the displacement of the fracturing pump is adjusted according to a difference value between the actual pressure value and the preset construction pressure, whereinwhen the actual pressure value is greater than the preset construction pressure, the displacement of the fracturing pump is reduced, specifically, the preset construction pressure is multiplied by a first fluctuation coefficient to determine the construction pressure upper limit, and when it is detected that the actual pressure value is greater than the construction pressure upper limit, the displacement of the fracturing pump is reduced, so that the actual pressure value is equal to the preset construction pressure. Through the fracturing pump-injection method, the problem of low utilizationrate of fracturing equipment in the prior art can be solved, and meanwhile, the fracturing transformation effect of the formation is improved advantageously.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development, in particular to a fracturing pump injection method. Background technique [0002] At present, with the vigorous development of unconventional oil and gas resources, the demand for complex fracture networks in reservoir volume fracturing is getting higher and higher. For unconventional reservoirs with no bottom water, on the premise of ensuring construction safety, increasing the displacement of the fracturing pump as much as possible will help increase the net pressure in the fracturing artificial fractures, thereby increasing the complexity of the artificial fracture network. [0003] However, the fracturing pumping method in the prior art is to pump the fracturing fluid and proppant according to the preset design displacement. If the actual pressure value is lower than the designed preset construction pressure, the fracturing equipment will not be able to It has been ful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/267
CPCE21B43/267
Inventor 张奎石善志聂洁净承宁于会永李洪陈进郭长永陈昂蒋丹
Owner PETROCHINA CO LTD
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