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Design method of well pattern model for fracturing fractures in horizontal wells

A model design, horizontal well technology, applied in wellbore/well components, calculation, earth-moving drilling and production, etc., can solve problems such as distortion of productivity prediction research, less consideration of reservoir seepage laws, etc., to achieve good popularization and application value and clear mechanism , the effect of strong operability

Inactive Publication Date: 2018-10-02
GUANGDONG UNIV OF PETROCHEMICAL TECH
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Problems solved by technology

However, for a long time, in the mine field, the vertical well pattern is mostly used to simulate and optimize the horizontal well pattern, or the single well model of the fracturing horizontal well is used to simulate and optimize the horizontal section of the horizontal well and the fracturing fracture parameters, and less consideration is given to the actual Different rocks, fluid physical property areas, and seepage laws in injection-production well control areas of the reservoir, resulting in distortion of reservoir productivity influencing factors and productivity prediction research

Method used

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  • Design method of well pattern model for fracturing fractures in horizontal wells
  • Design method of well pattern model for fracturing fractures in horizontal wells
  • Design method of well pattern model for fracturing fractures in horizontal wells

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Embodiment 1

[0021] In the embodiment of the present invention, such as figure 1 As shown, the design method of horizontal well fracturing fracture well pattern model, the steps are as follows:

[0022] In step 101, based on the actual geological parameters, a conceptual model of the target oil reservoir is established to lay a geological foundation for designing a well pattern model for fracturing and fractures of horizontal wells. The flow goes to step 102.

[0023] In step 102, using the multi-segment well model (multi-segment wellmodel) in the Eclipse reservoir numerical simulation software, deploy two fractured horizontal wells, one injection and one production, in the conceptual model obtained in step 101 . In the embodiment, the spacing and length of the fractures of the fractured horizontal wells in the conceptual model are equal, but the fractures are arranged in a staggered pattern. The process goes to step 103.

[0024] In step 103, the conceptual model of two fractured horiz...

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Abstract

The invention discloses a well pattern model designing method for horizontal well fractures. The method comprises the steps that on the basis of actual geological parameters, a conceptual model of a target oil reservoir is established with Eclipse reservoir numerical simulation software; an injection fractured horizontal well and a production fractured horizontal well are deployed, and the fractures have identical intervals and lengths and are staggered; an interval between adjacent fractures of the fractured horizontal wells is taken as a research range; a balance area is arranged according to physical properties of reservoir rock, distribution characteristics of fluid physical properties and percolation characteristics of an injection and production well control area; balance interval threshold breakthrough pressure is set for the balance area, so that start-up pressure of the oil reservoir can be simulated approximately, and the well pattern model for the horizontal well fractures can be established. The method is clear in mechanism, high in operability, effective and practical, broad in popularization and application prospect and substantial in economic and social benefit, and a scientific and reasonable numerical simulation model is provided for development strategy research of fractured horizontal wells for dense reservoirs.

Description

technical field [0001] The invention relates to the fields of oil and gas field development and computational fluid dynamics, in particular to a method for designing a well pattern model of a horizontal well fracturing fracture. Background technique [0002] For the development of tight oil reservoirs, it is impossible to achieve scale-effective production by relying on conventional technologies, and it is necessary to use technologies such as horizontal wells and hydraulic fracturing to achieve economical production. However, the production capacity of fractured horizontal wells is affected by many factors such as horizontal well pattern, horizontal well section and horizontal well fracturing parameters. However, for a long time, in the mine field, the vertical well pattern is mostly used to simulate and optimize the horizontal well pattern, or the single well model of the fracturing horizontal well is used to simulate and optimize the horizontal section of the horizontal w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/30E21B43/26G06F17/50
CPCE21B43/26E21B43/305G06F30/367
Inventor 胡罡田选华刘全稳陈国民刘大伟陈振亚鲍祥生王刘英陈才王身建马飞英王林
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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