Numerical simulation method considering nitrogen injection

A numerical simulation, nitrogen technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of short application time, achieve the effect of simple application, clear technical thinking, innovation and practicability

Inactive Publication Date: 2018-02-23
CHINA PETROLEUM & CHEM CORP +1
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  • Claims
  • Application Information

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Problems solved by technology

However, the geological characteristics of oil reservoirs in different blocks are not the same, and the properties of crude oil are not completely the same. What kind of development method is used, the reasonable range of the injection amount of additive

Method used

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  • Numerical simulation method considering nitrogen injection
  • Numerical simulation method considering nitrogen injection
  • Numerical simulation method considering nitrogen injection

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Embodiment Construction

[0030] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0031] Such as figure 1 as shown, figure 1 It is a flow chart of the numerical simulation method considering nitrogen injection in the present invention.

[0032] Step 1: Define a two-phase three-component model in the model. The three phases and three components are three components of oil, water and nitrogen and three phases of oil, water and gas.

[0033] Step 2: collect the experimental data of the viscosity of the three components changing with temperature. The crude oil viscosity data in this data is the surface degassed crude oil viscosity. Collect the dissolved oil-gas ratio of the target block. The formula is used to correct the viscosity data of crude oil and convert it into the change data of underground crude oil viscosity with t...

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Abstract

The invention provides a numerical simulation method considering nitrogen injection. The numerical simulation method considering nitrogen injection comprises the steps that 1, a three-phase three-component model is established; 2, an underground viscosity-temperature relation and an out-phase equilibrium constant are determined; 3, the relation between heat conductivity coefficients and nitrogen concentrations is determined, and a numerical reservoir simulation model is established; 4, a production history and a calculation result of the numerical simulation model are utilized for fitting; and5, different nitrogen injection volumes are defined, the calculation result is optimized, and a reasonable nitrogen injection volume is determined. The numerical simulation method considering nitrogen injection is clear in technical thinking and easy to apply, has creativity and practicability, is beneficial for popularization and has important guidance significance for guiding field implementation and realizing economical and effective development of a shallow and thin layer.

Description

technical field [0001] The invention relates to the field of reservoir numerical simulation, in particular to a reservoir numerical simulation method for improving the development effect of heavy oil reservoirs by utilizing steam + nitrogen gas recovery. Background technique [0002] Shengli Oilfield currently has proven heavy oil geological reserves of 6.4×10 8 t, of which the proven heavy oil in place in the eastern oil region is 5.89×10 8 t, currently used 4.69×10 8 t; Chunfeng and Chunhui oilfields were successively discovered in the western oil region, with proven geological reserves of 8029×10 4 t, currently used 2471×10 4 t. With the popularization and application of new theories and technologies, the annual output of Shengli heavy oil continues to grow, reaching 475×10 in 2012. 4 t is one of the main positions for the stable and increased production of Shengli Oilfield. [0003] At present, Chunfeng Oilfield mainly adopts HDNS, VDNS, HNS, HDS, VNS and other met...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 孙业恒曹秋颖吴光焕于建梅唐亮赵衍彬韦涛李伟忠王传飞韩文杰赵梅魏超平尉雪梅路言秋刘西雷梁金萍陈明铭
Owner CHINA PETROLEUM & CHEM CORP
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