Dense oil carbon dioxide huffing-puffing simulation method and device, and storage medium

A technology of carbon dioxide and simulation method, which is applied in earthwork drilling, design optimization/simulation, production fluid, etc. It can solve problems such as low simulation efficiency, inability to apply oil reservoirs in practice, and large calculation amount, so as to reduce simulation calculation amount and reduce Complexity, the effect of improving the degree of fitting

Pending Publication Date: 2020-09-18
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

Although the existing discrete fracture numerical models can accurately describe fractures, the amount of calculation is too large. Due to the constraints of

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  • Dense oil carbon dioxide huffing-puffing simulation method and device, and storage medium
  • Dense oil carbon dioxide huffing-puffing simulation method and device, and storage medium
  • Dense oil carbon dioxide huffing-puffing simulation method and device, and storage medium

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Embodiment Construction

[0066] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments in this specification, not all of the embodiments. Based on the implementations in this specification, all other implementations obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0067] refer to figure 1 As shown, the tight oil carbon dioxide huff and puff simulation method in some embodiments of this specification may include the following steps:

[0068] S101. Obtain reservoir geological parameters and initial inversion parameter characteristic values ​​of tight oil reservoirs.

[0069] In some embodiments of the ...

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Abstract

The embodiment of the specification provides a dense oil carbon dioxide huffing-puffing simulation method and device, and a storage medium. The method comprises the following steps that a reservoir geological parameter and an initial inversion parameter characteristic value are acquired, and a gridding embedded component discrete crack prior model is established based on the reservoir geological parameter as a carbon dioxide huffing-puffing numerical simulation model; based on a well production mode, the embedded component discrete crack prior model is subjected to carbon dioxide huffing-puffing production historical data numerical simulation, and a production dynamic parameter simulation value is obtained; a covariance matrix of the production dynamic parameter simulation value and an actual production dynamic parameter value is determined, and a Kalman iteration gain is obtained accordingly; the initial inversion parameter characteristic value is adjusted according to the Kalman iteration gain, and a new inversion parameter characteristic value is obtained; and when the numerical simulation meets iteration termination conditions, the currently obtained inversion parameter characteristic value is used as a reservoir characteristic parameter fitting result. The embodiment of the specification can improve accuracy and efficiency of dense oil carbon dioxide huffing-puffing simulation.

Description

technical field [0001] This description relates to the technical field of tight oil and gas reservoir development, in particular to a method, device and storage medium for simulating tight oil carbon dioxide huff and puff. Background technique [0002] During the development of oil and gas reservoirs, tight oil CO 2 During throughput production, automatic history fitting can be performed on production history data, and the characteristic parameters of tight oil can be obtained through automatic parameter inversion, so as to establish accurate tight oil CO 2 Throughput models to use to guide future production. [0003] Due to the low porosity and permeability of tight oil reservoirs, fracturing and related methods are usually used to increase the recovery of tight oil reservoirs. After fracturing, the geological conditions of tight oil reservoirs are similar to those of fractured oil reservoirs, although the matrix permeability The rate is very low, but due to the existence...

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Application Information

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IPC IPC(8): E21B43/16E21B43/26E21B47/00G06F30/20
CPCE21B43/164E21B43/26E21B47/00G06F30/20Y02P90/70
Inventor 薛亮张道伟刘月田
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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