Method for determining capacity of gas storage reservoir

A gas storage and capacity technology, which is applied in the directions of measurement, earthwork drilling, and fluid extraction, etc., can solve the problems of large storage capacity errors of gas storage, and achieve the effect of increasing reliability and safety and reducing costs

Inactive Publication Date: 2018-10-09
PETROCHINA CO LTD
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method for determining the capacity of the gas storage to solve the problem of large errors in determining the storage capacity of the gas storage in the prior art

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  • Method for determining capacity of gas storage reservoir
  • Method for determining capacity of gas storage reservoir
  • Method for determining capacity of gas storage reservoir

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] It should be noted that the terminology used here is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0033] It should be noted that the terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish similar object...

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Abstract

The invention provides a method for determining the capacity of a gas storage reservoir. The method comprises the steps of establishing a formation pressure model according to a real-time radius of agas layer in the gas storage reservoir, establishing a bottom hole flowing pressure model according to the effective permeability of the gas storage reservoir and a skin coefficient of the gas layer,establishing a wellhead oil pressure model and a gas injection model of a wellhead of the gas storage reservoir according to the formation pressure model and the bottom hole flowing pressure model, and determining the capacity of the gas storage reservoir according to the wellhead oil pressure model and the gas injection model. By adopting the method, the storage capacity of the gas storage reservoir can be accurately determined, according to the storage capacity obtained by the method, peak regulation operation can be timely performed on a gas well. The reliability and safety of gas supply ofthe gas well are increased. At the same time, the cost of gas production can be effectively reduced by adopting the gas production method.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a method for determining the capacity of a gas storage. Background technique [0002] The underground gas storage has the dual functions of seasonal peak regulation and strategic energy storage. Its gas wells have both the functions of gas injection and gas production. It belongs to the same type of injection and production. There are three basic requirements for the normal operation of the gas storage. The first is to verify the gas storage The second is to prevent the gas from migrating in the reservoir to leakage; the third is to ensure the gas supply capacity. The storage capacity is an important monitoring and control content for the normal operation of the UGS. The design and evaluation of the storage capacity parameters is the key technology for the construction and operation of the UGS. At present, the storage capacity calculation methods for different ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B47/00
CPCE21B43/00E21B47/00G16Z99/00
Inventor 王彬陈超孔丽娜庞晶崔国强
Owner PETROCHINA CO LTD
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