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Method and processor for determining storage capacity of gas storage

A gas storage and capacity technology, applied in the oil and gas field, can solve the problems of not considering dynamic changes and large errors in gas storage capacity

Pending Publication Date: 2022-07-29
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The prior art involves a method for determining the static storage capacity of a water-flooded gas reservoir for rebuilding a gas storage. This method is a static calculation and does not consider the dynamic changes in actual operation. The error in calculating the storage capacity of the gas storage is relatively large.

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  • Method and processor for determining storage capacity of gas storage
  • Method and processor for determining storage capacity of gas storage
  • Method and processor for determining storage capacity of gas storage

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Embodiment Construction

[0044] The specific implementations of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0045] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present application, the directional indications are only used to explain a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for the purpose of description, and should ...

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Abstract

The invention relates to the technical field of oil gas, and discloses a method for determining the capacity of a gas storage and a processor. The method comprises the following steps: establishing a three-dimensional geologic model based on acquired fault data, structural layer data, layer parameter data and well trajectory data; selecting permeability, porosity and relative permeability curves in the model as time-varying parameters in numerical reservoir simulation; the black oil model is transformed based on the reservoir physical property time-varying phenomenon, a new mathematical model is formed, the new mathematical model is used for reflecting the change of permeability and relative permeability curves along with surface flux, and a continuity equation in the new mathematical model changes; reading a first effective pore volume after multi-cycle historical fitting of the three-dimensional geologic model, and calculating a second effective pore volume contributed by each gas storage fluid region to the dynamic reserves of the gas reservoir; and determining the storage capacity of the gas storage based on the second effective pore volume and the natural gas compression factor. The method is closer to actual production, and can obtain reservoir capacity data more accurately.

Description

technical field [0001] The invention relates to the technical field of oil and gas, in particular to a method and a processor for determining the storage capacity of a gas storage. Background technique [0002] Underground Gas Storage (UGS) is a "container" for storing natural gas. The so-called "gas storage" generally refers to the underground gas storage. The underground gas storage is an artificial gas field or gas reservoir formed by re-injecting the commercial natural gas delivered by the long-distance pipeline into the underground space. Near the downstream natural gas user cities. The operation of a gas storage is based on an annual cycle, and "gas extraction in winter and spring, gas injection in summer and autumn" is the operation process of a general gas storage. [0003] The underground gas storage has the dual functions of seasonal peak regulation and energy strategic reserve. Its gas wells have both gas injection and gas production functions. They belong to th...

Claims

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Application Information

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IPC IPC(8): G06F30/27G06F30/28E21F17/16G06N20/00G06F113/08G06F119/14
CPCG06F30/27G06F30/28G06N20/00E21F17/16G06F2113/08G06F2119/14
Inventor 张平王多才黄发木常大伟李海川谢鹏飞苏海波成凡王元刚张宏付亚平
Owner PIPECHINA SOUTH CHINA CO
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