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Horizontal well fracturing dessert section selection display method

A display method and technology for horizontal wells, which can be applied in the fields of earth-moving drilling, wellbore/well components, and production fluids, etc., which can solve the problems that the selection of fracturing sweet spots in horizontal wells cannot be visually displayed.

Pending Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for displaying the sweet spots of fracturing in horizontal wells, so as to solve the problem that the sweet spots of fracturing in horizontal wells cannot be displayed directly

Method used

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  • Horizontal well fracturing dessert section selection display method
  • Horizontal well fracturing dessert section selection display method
  • Horizontal well fracturing dessert section selection display method

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] The invention calculates the comprehensive sweetness value by determining the three-dimensional space coordinates of the wellbore, correcting the validity of the parameters, and determining the level value of the evaluation factor, and visually displays the comprehensive sweet spot; In the analysis module of fracture selection section, the 3D scatter plot function is used to construct a 3D wellbore trajectory scatter plot for each dimension vector in the data volume of the comprehensive sweetness distribution along the wellbore under the 3D space coordinate system, and the fourth dimension color data is assigned to visually display the scatter plot along the wellbore. Comprehensive sweetness at various points in the wellbore. The method designed by the invention can visually display the fracturing sweet spot of the horizontal well along...

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Abstract

The invention relates to a horizontal well fracturing dessert section selection display method, and belongs to the technical field of oil and gas field development. According to the method, the shaft three-dimensional space coordinate data body is established, the position data of all the sampling points are converted into the shaft three-dimensional space coordinate data body, the comprehensive sweetness obtained through calculation of all the sampling points is loaded into the shaft three-dimensional space coordinate data body, and the sweetness distribution of the fractured horizontal well section can be visually displayed; the method can accurately identify dessert sections and non-dessert sections in fracturing well and section selection and optimization design processes, comprehensively considers integral characteristics of horizontal well sections and geological engineering parameters of local sections to complete fracturing segmented clustering and seam distribution design, and formulates a differential fracturing transformation scheme according to sweetness distribution and sweetness values of the sections. And the method is of great significance to improvement of the fracturing transformation effect and the fracturing construction efficiency.

Description

technical field [0001] The invention relates to a method for selecting and displaying sections of a horizontal well fracturing sweet spot, belonging to the technical field of oil and gas field development. Background technique [0002] In the process of staged fracturing stimulation of horizontal wells, due to the heterogeneity of the reservoir, it is necessary to select the sweet spot for fracturing stimulation of horizontal wells, carry out differential fracturing, and focus on the stimulation of the sweet spot section. In order to formulate a fracturing stimulation plan reasonably and efficiently, it is necessary to fully grasp the reservoir heterogeneity characteristics along the horizontal wellbore and accurately locate the fracturing stimulation sweet spot. [0003] The Chinese patent application document with application publication number CN106484925A discloses a fracturing section selection system and section selection method for shale gas horizontal wells. Through ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B47/00E21B47/022E21B47/04G06F30/20G06F17/16G06F17/18
CPCE21B43/26E21B47/00E21B47/022E21B47/04G06F30/20G06F17/16G06F17/18
Inventor 王帆李月丽张永春姚昌宇胡艾国刘威李嘉瑞宋丽阳
Owner CHINA PETROLEUM & CHEM CORP
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