Calculation method of oil production in block under gas flooding co2 and n2 development mode

A technology of calculation method and development method, which is applied in the direction of mining fluid, earthwork drilling, climate sustainability, etc., can solve the problems of low accuracy and achieve the goal of improving accuracy, reducing workload, reducing estimation and referring to analogy errors Effect

Active Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

These parameters are calculated through laboratory experiments and reservoir engineering methods. The traditional calculation of gas drive production is generally based on estimation and analogy with similar blocks, and the accuracy is not high

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  • Calculation method of oil production in block under gas flooding co2 and n2 development mode
  • Calculation method of oil production in block under gas flooding co2 and n2 development mode
  • Calculation method of oil production in block under gas flooding co2 and n2 development mode

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Embodiment Construction

[0034] In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings.

[0035] like Image 6 shown, Image 6 For the gas drive CO of the present invention 2 , N 2 The flow chart of the oil production calculation method of the block in the development mode.

[0036] Step 101 , using the minimum miscible pressure experiment or the long core flooding experiment to determine the gas flooding oil displacement efficiency Edg under different pressure levels.

[0037] According to the actual situation of the mine, in the case of continuous gas flooding, the minimum miscible pressure test experiment can generally be used to test 5-6 pressure points, and the gas flooding oil displacement efficiency under different pressures can be calculated by curve regression; when the gas an...

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Abstract

The present invention provides a gas-driven CO 2 , N 2 The method for calculating the oil production of the block under the development mode includes: step 1, using the minimum miscible pressure experiment or long core flooding experiment to determine the gas-flooding oil displacement efficiency Edg under different pressure levels; step 2, calculating the residual oil under different development stages Saturation Sor; Step 3, use the reservoir engineering method to calculate the water flooding wave Evw and coefficient and gas flooding sweep coefficient Evg; Step 4, predict the water flooding production Qw` in the same period according to the reservoir engineering method; Step 5, calculate the water flooding according to the above results Block-to-gas flooding production. The gas drive CO of the present invention 2 , N 2 The oil production calculation method of the block under the development mode is based on laboratory experiments and reservoir engineering, and through certain calculations and analysis, the oil production of the gas drive block is obtained, which solves the long-term basis for production calculation. Conversion and estimation, and unreasonable mineral production allocation. It provides the possibility for more accurate and efficient preparation of gas flooding development plan, mine production allocation and gas flooding potential evaluation.

Description

technical field [0001] The present invention relates to gas drive CO 2 , N 2 Technical field, specifically relates to a gas drive CO 2 , N 2 Calculation method of block oil production under development mode. Background technique [0002] Gas drive CO 2 , N 2 Technology is one of the most important and popular technologies for oil and gas field development to enhance oil recovery. Gas flooding production calculation is an important research content of this technology. With the help of laboratory experiments and reservoir theoretical calculation methods, gas flooding production calculation can be better carried out. The size of the oil production when the water flooding reservoir is converted to gas flooding is mainly based on the multiple of gas flooding oil displacement efficiency, the multiple of gas flooding sweep coefficient, and the multiple of remaining oil saturation when switching to gas flooding. These parameters are calculated by laboratory experiments and res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/16E21B43/20E21B49/00
CPCE21B43/164E21B43/168E21B43/20E21B49/00Y02P90/70
Inventor 任允鹏邴绍献牛祥玉李景梅刘晓英贾艳平李超张传宝孙渡
Owner CHINA PETROLEUM & CHEM CORP
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