Three-dimensional fracturing design method for horizontal well in compact sandstone reservoir

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, low output of oil and gas wells with controlled reserves of single wells, etc. Maximize single well production, achieve overall uniform stimulation, and improve targeted effects

Active Publication Date: 2014-02-19
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 p

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  • Three-dimensional fracturing design method for horizontal well in compact sandstone reservoir
  • Three-dimensional fracturing design method for horizontal well in compact sandstone reservoir
  • Three-dimensional fracturing design method for horizontal well in compact sandstone reservoir

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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 the exploration of oil and gas layers by oil and gas wells, determine the distribution characteristics of sand bodies in oil and gas layers, suc...

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Abstract

The invention relates to a three-dimension fracturing design method for a horizontal well in a compact sandstone reservoir, and belongs to the technical field of oil-gas exploration. The size of an improved sand body of the horizontal well is calculated in combination with sand body distribution in an oil-gas reservoir, three-dimensional earthquake prediction, horizontal well segment oil-gas display, adjacent well physical property parameters and a well network layout, and the length of each segment of the horizontal well, fracture half-length of fracturing and designed sand adding amount in fracturing are determined to achieve the effect that different fracturing design parameters are adopted for different horizontal segments of different types. The pertinence of the fracturing design for the horizontal well is improved, and the whole horizontal segments are improved evenly, so that single well controlled reserves of the horizontal well and the single well yield of an oil-gas well are maximum. The three-dimension fracturing design method is not only suitable for the fracturing design of the unconventional compact sandstone reservoir horizontal well, but also can be used in fracturing design of horizontal well improving in conventional clastic rock reservoir, carbonate reservoir, shale reservoir, volcanic reservoir and the like.

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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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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