Study on influencing factors of gas reservoir recovery factor and its enlightenment:A case study of well area A in Jingbian Gas Field,Ordos Basin

Ren Qian-ying, Dai Jin-you, Mu Zhong-qi

doi:10.11764/j.issn.1672-1926.2018.06.015

2018 , Vol. 29 >Issue 9: 1376 - 1382

DOI: https://doi.org/10.11764/j.issn.1672-1926.2018.06.015

Study on influencing factors of gas reservoir recovery factor and its enlightenment:A case study of well area A in Jingbian Gas Field,Ordos Basin

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College of Petroleum Engineering,China University of Petroleum-Beijing,Beijing 102249,China

Received date: 2018-05-08

Revised date: 2018-06-20

Online published: 2019-08-27

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Abstract

Taking well area A in Jingbian Gas Field of Ordos Basin as an example,the effects of well pattern control,reservoir physical properties and formation abandonment pressure on gas reservoir recovery and their primary and secondary relations are comparatively analyzed by using single factor correlation analysis and numerical simulation methods.The results show that the control level of well pattern is the primary factor affecting the recovery factor,and the recovery factor increases by 8.5% for every 10% increase in the control level of well pattern.Permeability is an important factor that affects the recovery factor,for every 10% increase in permeability,the average recovery factor increases by 6%.The abandonment pressure also has a great influence on the recovery factor,and the recovery factor can be increased by 1.6% for every 10% reduction of the abandonment pressure.The comprehensive order of the influence of the three factors on the recovery factors is:Well pattern control degree>reservoir physical properties>abandonment pressure.The study shows that permeability is the inherent property of the reservoir and it is difficult to change fundamentally.However,the abandonment pressure is limited by wellhead export pressure and pressurized production cost,and the reduction range is limited.Therefore,optimizing well pattern and increasing the control level of well pattern are effective ways to improve gas reservoir recovery factor.The research results are of practical significance and can provide references for improving the development mode and increasing the recovery factor of gas reservoirs.

Key words： Control level of well pattern; Permeability; Abandonment pressure; Influencing factors; Recovery factor; Jingbian Gas Field

Cite this article

Ren Qian-ying, Dai Jin-you, Mu Zhong-qi . Study on influencing factors of gas reservoir recovery factor and its enlightenment:A case study of well area A in Jingbian Gas Field,Ordos Basin[J]. Natural Gas Geoscience, 2018 , 29(9) : 1376 -1382 . DOI: 10.11764/j.issn.1672-1926.2018.06.015

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