Theory and Technology of Effective-Displacement-Pressure System of Tight Oil Reservoir

CHENG  Qi-Gui, LEI  Qi-Hong, XIONG  Wei-Liang

doi:10.11764/j.issn.1672-1926.2012.03.570

Natural Gas Geoscience >

2012 , Vol. 23 >Issue 3: 570 - 576

DOI: https://doi.org/10.11764/j.issn.1672-1926.2012.03.570

Theory and Technology of Effective-Displacement-Pressure System of Tight Oil Reservoir

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1.The Exploration and Development Research Institution of PetroChina Changqing Oilfield Company,Xi′an 710018,China;
2. National Engineering Laboratory of Low Permeability Oil and Gas Field,Xi′an 710018,China

Received date: 2011-12-08

Revised date: 2012-04-16

Online published: 2012-06-10

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Abstract

With development of oil and gas industry,the exploration and development of oil and gas have been expanded from conventional oil-gas reservoir to tight oil-gas reservoir. The establishment of effective-displacement-pressure system plays a fundamental role in the development of tight oil reservoir. Based on flow characteristics of tight reservoir,a new reservoir evaluation method as main evaluation parameters has been constructed,taking pressure gradient,mainstream throat radius,effective porosity,movable fluid saturation etc. We use this new evaluation method to establish the reservoir classification evaluation chart. Meanwhile,the theory of the effective-displacement-pressure system is explored. Some key parameters such as endpoint displacement pressure,terminal flow pressure,and balance coefficient between injection and production etc are also considered. We also point out how to setup the effective-displacement -pressure system by the specific ways and methods. The process of the development practice has prove its validity.

Key words： Tight oil reservoir; Reservoir evaluation; Effective-displacement-pressure system; Balance coefficient between injection and production.

Cite this article

CHENG Qi-Gui, LEI Qi-Hong, XIONG Wei-Liang . Theory and Technology of Effective-Displacement-Pressure System of Tight Oil Reservoir[J]. Natural Gas Geoscience, 2012 , 23(3) : 570 -576 . DOI: 10.11764/j.issn.1672-1926.2012.03.570

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