Calibration method of oil reservoir gas drive recovery ratio, data processing device, computer equipment and readable storage medium

A calibration method and recovery factor technology, applied in data processing applications, calculations, instruments, etc., can solve problems such as inapplicability, and achieve the effect of reliable principle, accurate calibration, and high accuracy.

Pending Publication Date: 2021-06-15
PETROCHINA CO LTD
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Problems solved by technology

The conventional water drive curve method and water drive chart are not applicable to the calibration of gas drive recovery, so it is necessary to propose a calibration method for gas drive recovery in reservoirs

Method used

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  • Calibration method of oil reservoir gas drive recovery ratio, data processing device, computer equipment and readable storage medium
  • Calibration method of oil reservoir gas drive recovery ratio, data processing device, computer equipment and readable storage medium
  • Calibration method of oil reservoir gas drive recovery ratio, data processing device, computer equipment and readable storage medium

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Embodiment Construction

[0046] The invention discloses a method for calibrating oil reservoir gas flooding recovery, which includes the following process:

[0047] S1. Calculate the cumulative oil production measured by underground volume, the cumulative water production measured by underground volume and the cumulative gas production measured by underground volume

[0048] 1.1 Accumulated oil production processing

[0049] Due to the cumulative oil production N in the comprehensive data table of oilfield development p Measured in surface mass units (10,000 tons), it needs to be converted into underground volume units (10,000 cubic meters); the specific method is to divide the cumulative oil production measured in surface mass units by the crude oil density, multiply by the crude oil volume coefficient, and then Get the cumulative oil production N measured by underground volume p B o .

[0050] 1.2 Accumulated water treatment

[0051] Similarly, the cumulative water production W measured in grou...

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Abstract

The invention belongs to the technical field of recovery ratio calibration, and discloses a calibration method for oil reservoir gas drive recovery ratio, a data processing device, computer equipment and a readable storage medium. The method comprises the steps that S1, obtaining a first-class gas drive characteristic curve function according to the cumulative oil production measured by the underground volume, the cumulative water production measured by the underground volume and the cumulative gas production measured by the underground volume, and obtaining a fitting coefficient and a fitting constant according to the first-class gas drive characteristic curve function; S2, calculating gas flooding limit cumulative oil production according to the fitting coefficient, the fitting constant and the oil content under the gas flooding limit condition; and S3, according to the gas drive limit cumulative oil production, calculating the gas drive recovery ratio in combination with the oil reservoir geological reserves. The method is reliable in principle and high in solving precision, accurate calibration of the gas drive recovery ratio can be achieved, and the gas drive recoverable reserves are solved by calibrating the gas drive recovery ratio of the oil reservoir so as to guide oil reservoir gas drive development scheme compiling, gas drive oil reservoir recoverable reserve calibration and SEC reserve evaluation.

Description

technical field [0001] The invention relates to the technical field of recovery factor calibration, in particular to a calibration method, data processing device, computer equipment and readable storage medium for oil reservoir gas drive recovery factor. Background technique [0002] The reservoirs in the later stage of water injection development are in the "double high and one low" stage of "combined high water cut, high recovery degree, and low oil recovery rate". The potential for continued fine water flooding is small, and the situation of stable production is passive; therefore, some reservoirs are turned to gas injection development. The conventional water drive curve method and water drive chart are not applicable to gas drive recovery calibration, so it is necessary to propose a gas drive recovery calibration method. Contents of the invention [0003] One of the objects of the present invention is to provide a method for calibrating oil reservoir gas flooding reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0639G06Q50/02
Inventor 陶正武陈江林赵行
Owner PETROCHINA CO LTD
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