A three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs

A technology of tight sandstone reservoir and design method, applied in the field of oil and gas exploration, can solve the problems of poor targetness of horizontal well fracturing design, insufficient reservoir stimulation, and low production of oil and gas wells with controlled reserves of a single well, so as to achieve controlled reserves and oil and gas wells. Maximize single well production, achieve overall uniform stimulation, and improve targeted effects

Active Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs, so as to solve the problems of poor pertinence in fracturing design of horizontal wells and insufficient reservoir stimulation, resulting in low controlled reserves of single wells and low production of oil and gas wells

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  • A three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs
  • A three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs
  • A three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs

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Embodiment Construction

[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] The present invention calculates the volume of sand bodies stimulated by horizontal wells by combining the sand body distribution of oil and gas reservoirs, three-dimensional seismic prediction, oil and gas display in horizontal well sections, physical parameters of adjacent wells and well pattern layout to determine the design parameters of each section of the horizontal well, thereby ensuring water The pertinence of flat well fracturing design, the success rate of construction and the effectiveness of stimulation form a three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs. The method specifically includes the following steps:

[0026] 1. According to oil and gas well exploration of oil and gas layers, determine the sand body distribution characteristics of oil and gas layers, such as figure 1...

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Abstract

The invention relates to a three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs, belonging to the technical field of oil and gas exploration. The present invention combines the distribution of oil and gas reservoir sand bodies, three-dimensional seismic prediction, oil and gas display in horizontal well sections, physical parameters of adjacent wells and well pattern layout to calculate the volume of sand bodies stimulated by horizontal wells, and determine the length of each section of the horizontal well, the half-length and The amount of sand added to the fracturing design enables different fracturing design parameters to be adopted for different types of horizontal sections. Well production is maximized. The invention is not only applicable to the fracturing design of horizontal wells in unconventional tight sandstone oil and gas reservoirs, but also can be used in the fracturing design of horizontal well reconstruction in conventional clastic rocks, carbonates, shales, volcanic rocks and other reservoirs.

Description

technical field [0001] The invention relates to a three-dimensional fracturing design method for horizontal wells in tight sandstone reservoirs, belonging to the technical field of oil and gas exploration. Background technique [0002] Tight sandstone reservoirs usually have the characteristics of low porosity, low permeability, low reserve abundance, and low natural productivity. Conventional hydraulic fracturing forms a proppant with a certain length and conductivity by filling high-strength proppants in the fractured oil and gas reservoirs. Artificial fractures form oil and gas migration channels to increase production of oil and gas wells. Therefore, the stimulation effect of conventional hydraulic fracturing mainly depends on the length of the stimulated fracture and the conductivity of the fracture. However, due to the characteristics of tight sandstone reservoirs, conventional hydraulic fracturing has limited reserves and low oil and gas production per well, making i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B47/00E21B49/00
Inventor 徐兵威李克智秦玉英何青罗懿陈付虎张永春王德安王迁伟李国锋
Owner CHINA PETROLEUM & CHEM CORP
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