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Method, device and storage medium for determining gas storage capacity in reservoir

A gas volume and oil reservoir technology, applied in measurement, earthwork drilling and production, data processing applications, etc., can solve the problem of inaccurate gas storage in reservoirs and achieve high accuracy

Active Publication Date: 2021-09-28
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method, device and storage medium for determining the gas storage capacity of the oil reservoir, which can solve the problem that the gas storage capacity of the oil reservoir determined according to the prior art is not accurate enough

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  • Method, device and storage medium for determining gas storage capacity in reservoir
  • Method, device and storage medium for determining gas storage capacity in reservoir
  • Method, device and storage medium for determining gas storage capacity in reservoir

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Embodiment Construction

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0063] Before explaining the embodiments of the present invention in detail, the nouns involved in the embodiments of the present invention will be explained first.

[0064] gas volume multiple

[0065] Gas volume multiple refers to 1m 3 The ratio of the volume of natural gas under reservoir conditions to its volume under surface standard conditions (20°C, 0.1MPa).

[0066] surface crude oil density

[0067] Surface crude oil density refers to the mass of crude oil per cubic meter under standard conditions (20°C, 0.1MPa).

[0068] dissolved gas

[0069] Dissolved gas refers to natural gas that exists in crude oil or water in a dissolved state.

[0070] Reservoir average water cut

[0071] The average reservoir water cut r...

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Abstract

The invention discloses a method, a device and a storage medium for determining the gas storage capacity of an oil reservoir, and belongs to the technical field of natural gas flooding. The method includes: obtaining the gas volume multiple of the target oil reservoir and the surface crude oil density, and the oil production, water production and dissolved gas production of the target production cycle of the target natural gas flooding project, according to the gas volume multiple and the surface crude oil density, and the target The oil production, water production and dissolved gas production in the production cycle determine the reservoir gas storage in the target production cycle. The gas storage volume in the target natural gas flooding project determined by this method is more in line with the actual change of the reservoir development, and solves the problem of determining the gas storage volume in the target natural gas flooding project based on setting a fixed ratio of gas storage rate in the prior art. In order to solve the problem of inaccurate gas volume, the determined gas storage capacity in the reservoir of the target natural gas flooding project can provide data support for the subsequent accurate determination of the economic benefits of the target natural gas flooding project.

Description

technical field [0001] The invention relates to the technical field of natural gas flooding, in particular to a method, device and storage medium for determining the gas storage capacity of an oil reservoir. Background technique [0002] When natural gas flooding is used to develop a reservoir, natural gas can usually be injected into the reservoir by means of cyclic gas injection to supplement the energy of the reservoir and improve the oil displacement efficiency of the reservoir. During cyclic gas injection, in order to achieve the stability and balance of reservoir energy, the amount of natural gas injected into the reservoir is usually greater than the amount of natural gas produced from the reservoir, that is, a certain volume of injected natural gas will form and remain The gas is stored in the oil reservoir, and the volume of the retained gas in the oil reservoir can be called the gas storage volume of the oil reservoir. In a natural gas flooding project, the gas st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/16E21B47/00G06Q50/02
CPCE21B43/168E21B47/00G06Q50/02
Inventor 程海鹰闫云贵章杨柳敏梁雁滨于娣
Owner PETROCHINA CO LTD
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