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Continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method

A technology for tight oil reservoirs and volume reconstruction, which is applied in the fields of fluid production, earth-moving drilling, measurement, etc., and can solve problems such as difficulty in greatly increasing production capacity, failure to effectively consider imbibition and energy-enhancing fracture conductivity, and increasing net pressure, etc. Achieve the effect of improving fracturing effect, increasing formation energy and pore pressure, and avoiding flowback waste

Active Publication Date: 2021-09-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This patent evaluates the fracability of glutenite reservoirs, screens the layers with vertical well fracture network fracturing, and then optimizes the fracture network fracturing process parameters such as fracturing construction pump sequence, construction parameters and temporary plugging agent, increasing the number of fractures in the fracture network. Net pressure forces fractures to divert to form a fracture network system; only considers the optimization of fracturing stimulation technology, but does not effectively consider imbibition enhancement and fracture conductivity. Although it can increase the complexity of fractures, it is difficult to greatly increase productivity

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  • Continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method
  • Continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method
  • Continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method

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[0029] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0030] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations and / or combinations thereof.

[0031] In order to enable those skilled in the art to understand the technical solution of the present invention more clearly, the technical solution of th...

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Abstract

The invention provides a continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method. The continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method comprises the steps that step 1, a tight oil reservoir full-three-dimensional horizontal well fracturing geomechanical model containing a single fracturing section is established, and horizontal well close cutting optimization design strengthening transformation is carried out; step 2, energy-increasing imbibition reinforced transformation is carried out on the oil reservoir; step 3, a full-three-dimensional horizontal well fracturing geomechanical model of the tight oil reservoir block is established, and volume fracture net fracturing strengthening transformation is carried out; and step 4, main crack cluster type support high flow guide fracturing strengthening transformation is carried out. According to the continental facies tight oil reservoir volume transformation strengthening fracture network fracturing method, the volume transformation strengthening fracture network fracturing technology is developed on the basis of the volume fracturing technology, namely, the technological means for improving the initial yield and the final recovery efficiency of the oil reservoir are fully considered in all links of the fracturing technology, and the effective reservoir transformation volume maximization is achieved.

Description

technical field [0001] The invention relates to the technical field of increasing production of oil and natural gas, in particular to a method for intensifying volume reforming fracture network fracturing of continental tight oil reservoirs. Background technique [0002] Due to the great success of shale gas stimulation in North America, the idea of ​​volume fracturing stimulation has attracted worldwide attention, and the technologies of staged stimulation of horizontal wells and large-scale slick water fracturing have been widely used in the stimulation of continental tight oil reservoirs in China . Volume fracturing is the use of hydraulic fracturing technology to generate shear slip in brittle rocks, continuously communicate with the natural fracture system, and form a fracture network in which artificial fractures and natural fractures intersect, thereby increasing the effective stimulation volume, improving initial production and ultimate recovery . The fracturing fr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/16E21B47/00
CPCE21B43/26E21B43/164E21B43/16E21B47/00Y02P90/70
Inventor 王增林陈勇钱钦张潦源黄波王东英郑彬涛张子麟陈凯
Owner CHINA PETROLEUM & CHEM CORP
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