靖边油田靖探721井区长6超低渗油藏水平井井网布井探讨
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摘要
以鄂尔多斯盆地长6层为主的超低渗透油气资源在中国低渗油气资源中占据主要部分,具有巨大的开发潜力,但是超低渗油田岩性致密、储层非均质性强等特征导致其开发难度大。针对该类油藏的储层特点,论文以靖边油田靖探721井区域实际地质情况为基础,建立数值模拟模型,对该类超低渗油藏水平井井网开发进行优化研究,优化结果表明:水平井方位垂直于最大主应力方向、水平段长度为700～800 m、压裂裂缝密度为1.5×10~(-2)条/m、裂缝半长为100～150 m、采用纺锤型裂缝布放模式、注采井距为500～600 m、排距为130～150 m的水平井井网系统有更好的开发效果,研究结果对靖边油田靖探721井区域长6超低渗透油田水平井井网开发具有指导意义。
In the low permeable oil-gas resources of our country, ultra-low permeable resources which is represented by Chang-6 oil layer in Ordos Basin occupied the main part and has great development potential. However, with the characteristics of find and close lithology and strong reservoir heterogeneity, etc., it is difficult to develop the ultralow permeable oil field. In this article, according to the characteristics of such reservoirs, based on the practical geological situation of Jingtan 721 area in Jingbian oil field, numerical simulators were built and the optimization research for the horizontal well pattern in such ultra-low permeable resource was carried out. The research results show that the horizontal well pattern has a better development effect while the horizontal direction is perpendicular to the direction of maximum principal stress; the horizontal length is 700～800 m; the density of artificial fracture is 1.5×10~(-2) m~(-1); the half length of fracture is 100～150 m; the artificial pressure crack pattern is spindle-shape; the injector producer distance is 500～600 m; the row spacing is 130～150 m. The research results have a guiding significance for the horizontal well pattern development of Chang-6 ultra-low permeable oil layer of Jingtan 721 area in Jingbian oil field.
In the low permeable oil-gas resources of our country, ultra-low permeable resources which is represented by Chang-6 oil layer in Ordos Basin occupied the main part and has great development potential. However, with the characteristics of find and close lithology and strong reservoir heterogeneity, etc., it is difficult to develop the ultralow permeable oil field. In this article, according to the characteristics of such reservoirs, based on the practical geological situation of Jingtan 721 area in Jingbian oil field, numerical simulators were built and the optimization research for the horizontal well pattern in such ultra-low permeable resource was carried out. The research results show that the horizontal well pattern has a better development effect while the horizontal direction is perpendicular to the direction of maximum principal stress; the horizontal length is 700～800 m; the density of artificial fracture is 1.5×10~(-2) m~(-1); the half length of fracture is 100～150 m; the artificial pressure crack pattern is spindle-shape; the injector producer distance is 500～600 m; the row spacing is 130～150 m. The research results have a guiding significance for the horizontal well pattern development of Chang-6 ultra-low permeable oil layer of Jingtan 721 area in Jingbian oil field.
引文
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[16]张晓黎.低渗透油藏水平井开发渗流规律研究[D].东营:中国石油大学,2009.
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[19]JOSHI S D.Augmentation of Well Productiion Using Slant and Horizontal Well[Z].SPE15375,1986.
[20]樊建明,屈雪峰,王冲,等.超低渗透油藏水平井注采井网设计优化研究[J].西南石油大学学报(自然科学版),2018,40(2):115-128.
[21]曾保全,程林松,李春兰,等.特低渗透油藏压裂水平井开发效果评价[J].石油学报,2010,31(5):791-796.
[2]李道品.低渗透砂岩油田开发[M].北京:石油工业出版社,1997.
[3]李安琪,李忠兴.超低渗透油藏开发理论与技术[M].北京:石油工业出版社,2015.
[4]胡文瑞.中国低渗透油气的现状与未来[J].中国工程科学,2009,11(8):29-37.
[5]胡文瑞,魏漪,鲍敬伟.中国低渗透油气藏开发理论与技术进展[J].石油勘探与开发,2018,45(4):646-656.
[6]叶敬东,康德泉.低渗透油气田开发译文集[M].北京:石油工业出版社,1992:53-55.
[7]李忠兴,赵继勇,李宪文,等.超低渗透油藏渗流特征及提高采收率方向[J].辽宁工程技术大学学报(自然科学版),2009,28(S1):1-3.
[8]黄德利.大庆油田特低渗透裂缝性油藏渗流特征研究及应用[D].大庆:大庆石油学院,2010.
[9]黄延章.低渗透油田渗流机理[M].北京:石油工业出版社,1998.
[10]杨仁锋,姜瑞忠,孙君书,等.低渗透油藏非线性微观渗流机理[J].油气地质与采收率,2011,18(2):90-93.
[11]王书礼,唐许平,李伯虎.低渗透油藏水平井开发设计研究[J].大庆石油地质与开发,2001(1):23-24.
[12]赵继勇,樊建明,何永宏,等.超低渗-致密油藏水平井开发注采参数优化实践--以鄂尔多斯盆地长庆油田为例[J].石油勘探与开发,2015,42(1):68-75.
[13]杨正明,张仲宏,刘学伟,等.低渗/致密油藏分段压裂水平井渗流特征的物理模拟及数值模拟[J].石油学报,2014,35(1):85-92.
[14]姜华.低渗透油藏水平井开发优化设计[D].东营:中国石油大学(华东),2013.
[15]董国栋,乔南方,杜亚峰,等.低渗透油藏水平井开发研究综述[J].重庆科技学院学报(自然科学版),2014,16(1):78-80.
[16]张晓黎.低渗透油藏水平井开发渗流规律研究[D].东营:中国石油大学,2009.
[17]方燃.水平井开发低渗透油藏研究综述[J].赤峰学院学报(自然科学版),2013,29(14):110-111.
[18]LI HUJUN,JIA ZHENGQI,WEI ZHAOSHENG.A New Mothod to Predict Performance of Fractured Horizontal Wells[Z].SPE37051,1996.
[19]JOSHI S D.Augmentation of Well Productiion Using Slant and Horizontal Well[Z].SPE15375,1986.
[20]樊建明,屈雪峰,王冲,等.超低渗透油藏水平井注采井网设计优化研究[J].西南石油大学学报(自然科学版),2018,40(2):115-128.
[21]曾保全,程林松,李春兰,等.特低渗透油藏压裂水平井开发效果评价[J].石油学报,2010,31(5):791-796.