The evaluation and calculation of different geological reserves and recovery ratio of Ma51+2  gas reservoir in Yulin Gasfield of Ordos Basin

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  • 1.No.2 Gas Production Plant of PertroChina Changqing Oilfield Company,Yulin 719000,China;
    2.Sulige Gas Field Research Center of PertroChina Changqing Oilfield Company,Xi’an 710018,China;
    3.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China

Received date: 2017-09-09

  Revised date: 2018-09-27

  Online published: 2019-03-11

Abstract

Lower Paleozoic carbonatite Ma51+2  gas reservoirs in Yulin Gasfield,located on the east side of Jingbian ancient submarine platform of Ordos Basin,which is the expanded part of the developed Ma51+2 gas reservoir in the Jingbian Gasfield.Under the effect of drilling and the production characteristics,the Lower Paleozoic reservoir shows good development potential.Because the heterogeneity of reservoir is strong,the data of early gas field is not rich enough,and the density of well pattern is relatively low.There is a certain degree of error in the proven reserves.At the same time,it is in the process of rolling development of the gas field.Because avoided the thin reservoir and the poor physical property,the actual use of geological reserves and the early submission of the proven geological reserves are different.This will influence the accuracy of the calculation results of the development index of gas recovery rate,recovery degree,recovery ratio and so on.In view of the problem,many methods are adopted to separate gas reservoirs into relatively independent flow units.By carrying out the gas-bearing area and reserves of each flow unit,it is more accurate and reliable to verify the actual geological reserves obtained by excluding the undeveloped area in the gas-bearing area.The dynamic reserves of gas wells are calculated by using many methods.The dynamic reserves of gas fields are calculated by area weighted method and flow unit method.On the basis of this,the dynamic ratio of reserves is calculated,which lays a foundation for accurate calculation of gas recovery.According to the economic evaluation and gas reservoir engineering research,the waste gas and waste formation pressure will be confirmed in the gas field.Combined with the dynamic reservesand its ratio for the geological reserves,the recovery of the different geological reserves will be calculated finally.Through comparison and analysis,the geological reserves ratio are proved to be of great error.It is more scientific and practical to verify the geological reserves ratio to be practical,to have lateral comparability.The dynamic geological reserve ratio excluded the ineffective reserves of non-seepage,which is more accurate and reliable.


Cite this article

Wen Kai-feng, Yang Guo-ping, Gao Jun-wei, Hao Yu-hong, Bai Hui, Zhang Yin-de, Ye Cong-lin, Sun Long . The evaluation and calculation of different geological reserves and recovery ratio of Ma51+2  gas reservoir in Yulin Gasfield of Ordos Basin[J]. Natural Gas Geoscience, 2019 , 30(2) : 266 -273 . DOI: 10.11764/j.issn.1672-1926.2018.09.016

References

[1]Dai Jinxing,Pei Xigu,Qi Houfa.China Natural Gas Geology[M].2nd edition.Beijing:Petroleum Industry Press,1996.
戴金星,裴锡古,戚厚发.中国天然气地质学[M].第二版.北京:石油地质出版社,1996.
[2]Liu Quanyou,Jin Zhijun,Wan Yi,et al.Gas filling pattern in Paleozoic marine carbonate reservoir of Ordos Basin[J].Acta Petrologica Sinica,2012,28(3):847-858.
刘全有,金之钧,王毅,等.鄂尔多斯盆地海相碳酸盐岩层系天然气成藏研究[J].岩石学报,2012,28(3):847-858.
[3]Ning Ning,Chen Mengjin,Sun Fenjin,et al.Determination and its significance of ancient oil pools in Ordovician meathering crusting,Ordos Basin[J].Oil and Gas Geology,2007,28(2):280-286.
宁宁,陈孟晋,孙粉锦,等.鄂尔多斯盆地奥陶系风化壳古油藏的确定及其意义[J].石油与天然气地质,2007,28(2):280-286.
[4]Liu Zhijun,Lan Yifei,Xia Yong,et al.Dynamic evaluation and horizontal-well development technology for Jingbian Gasfield[J].Natural Gas Exploration & Development,2014,37(3):37-40.
刘志军,兰义飞,夏勇,等.靖边气田动态精细评价及水平井开发技术研究与实践[J]天然气勘探与开发,2014,37(3):37-40.
[5]Yang Hua,Fu Jinhua,Wei Xinshan,et al.Characteristics of natural gas reservoirs formation in Ordos Basin[J].Natural Gas Industry,2005,25(4):5-8.
杨华,付金华,魏新善,等.鄂尔多斯盆地天然气成藏特征[J].天然气工业,2005,25(4):5-8.
[6]Yan Ningping,Zhang Zonglin,He Yalin,et al.Heterogeneity appraisal of Majiagou51+2 gas reservoir in Jingbian Gasfield[J].Natural Gas Industry,2007,27(5):102-103.
晏宁平,张宗林,何亚宁,等.靖边气田马五1+2气藏储层非均质性评价[J],天然气工业,2007,27(5):102-103.
[7]Li Shilin,Lei Bianjun,Zhang Wenji,et al.Study on the main diagenesis of Ma51  submember in northeastern Jingbian Gas Field[J].Lithologic Reservoirs,2009,21(1):22-26.
李世临,雷卞军,张文济,等.靖边气田东北部马五1亚段主要成岩作用研究[J],岩性油气藏,2009,21(1):22-26.
[8]Shu Zhuangzhi,Du Zhimin,Liu Jianyi,et al.Prediction method of production performance gas wells[J].Natural Gas Industry,2004,24(8):78-81.
疏壮志,杜志敏,刘建仪,等.气井生产动态预测方法研究[J],天然气工业,2004,24(8):78-81.
[9]Zhang Wen,Xie Weiguo.Decline analysis methods and performance prediction of gas well production[J].Petrochemical Industry Application,2009,16(4):86-88.
张文,解维国.气井产量递减分析方法与动态预测[J],断块油气田,2009,16(4):86-88.
[10]Wang Zuoqian,Huang Shu’nv,He Shunli,et al.New methods of reserves estimation for the Lower Paleozoic carbonate gas reservoir of Jingbian Gas Field[J].Special Oil and Gas Reservoirs,2010,17(6):21-24.
王作乾,黄淑女,何顺利,等.靖边气田下古碳酸盐岩气藏储量计算新方法[J].特种油气藏,2010,17(6):21-24.
[11]Shi Yucheng,Chen Mingqiang,Zhang Shenqing,et al.Flow unit method for calculation of single well controlled reserves in low permeability gas field[J].Lithologic Reservoirs,2007,19(4):106-110.
史玉成,陈明强,张审琴,等.低渗透气田单井控制储量计算的流动单元方法研究[J],岩性油气藏,2007,19(4):106-110.
[12]Yang Guoping,Hao Yuhong,Wen Kaifeng,et al.Fine division of flow units in Shan32 member for the low permeability sandstone gas reservoir in Yulin Gasfield[J].Petroleum Exploration and Development,2017,40(1):44-51.
杨国平,郝玉鸿,文开丰,等.榆林气田山32段低渗砂岩气藏流动单元精细划分[J].天然气勘探与开发,2017,40(1):44-51.
[13]Hao Yuhong,Xu Min,Xu Xiaorong.Accurately calculating dynamic reserves of low-permeability gas reservoir[J].Petroleum Exploration and Development,2002,29(5):66-68.
郝玉鸿,许敏,徐小蓉.正确计算低渗气藏的动态储量[J],石油勘探与开发,2002,29(5):66-68.
[14]Li Tiancai,Hao Yuhong,Yin Shugen,et al.A new method of determining abandonment condition in Yulin gas reservoir[J].Special Oil and Gas Reservoirs,2006,13(6):52-54.
李天才,郝玉鸿,殷树根,等.榆林气田气井废弃条件的确定[J].特种油气藏,2006,13(6):52-54.
[15]Li Zhongxing,Hao Yuhong.Correction of the gas reservoir recovery factor and recoverable reserves estimated by volumetric method[J].Natural Gas Industry,2001,21(2):71-74.
李忠兴,郝玉鸿.对容积法计算气藏采收率和可采储量的修正[J],天然气工业,2001,21(2):71-74.

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