致密砂岩气藏多段压裂水平井优化部署
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摘要
国内致密砂岩气藏普遍存在含气砂体分布零散、储集体内非均质性强的特征,含气砂体准确预测的难度较大。对于水平井开发方式而言,2口相向水平井靶点B之间留有较大间距,将造成储量平面控制和动用程度降低。从国外致密气开发实践调研入手,基于鄂尔多斯盆地苏里格致密砂岩气藏有效砂体空间展布、规模尺度及开发动态特征分析,结合数值模拟方法,论证水平井在不同部署方式下的开发效果,提出水平井的优化部署方案。研究表明:相向2口水平井靶体B点接近重合、压裂段等间距部署,可以大幅度提高水平井对储量的控制和动用程度,同时有效提高气田整体开发经济效益。研究成果在致密气实际开发中具有可操作性和推广应用前景。
For domestic tight sandstone gas reservoirs,the distribution of gas-bearing sand bodies which is difficult to predict accurately is scattered and the heterogeneity of reservoirs is strong.For the development mode of horizontal wells,there is a large distance between target B of two opposite horizontal wells,which will reduce the degree of area control and utilization of reserves.Starting from the investigation of foreign tight gas development practice,based on the analysis of effective sand body spatial distribution,scale and development dynamic characteristics of Sulige tight sandstone gas reservoir,combined with numerical simulation method,the paper demonstrates the development effect of horizontal wells under different deployment modes,and puts forward the optimal deployment scheme of horizontal wells.The results show that the target B of two horizontal wells in opposite direction is close to coincidence and the fracturing section is deployed equidistantly,which can greatly improve the level of reserves control and utilization of horizontal wells,and effectively improve the overall economic benefits of gas field development.The research and understanding have operability and application prospects in the actual development of dense gas.
For domestic tight sandstone gas reservoirs,the distribution of gas-bearing sand bodies which is difficult to predict accurately is scattered and the heterogeneity of reservoirs is strong.For the development mode of horizontal wells,there is a large distance between target B of two opposite horizontal wells,which will reduce the degree of area control and utilization of reserves.Starting from the investigation of foreign tight gas development practice,based on the analysis of effective sand body spatial distribution,scale and development dynamic characteristics of Sulige tight sandstone gas reservoir,combined with numerical simulation method,the paper demonstrates the development effect of horizontal wells under different deployment modes,and puts forward the optimal deployment scheme of horizontal wells.The results show that the target B of two horizontal wells in opposite direction is close to coincidence and the fracturing section is deployed equidistantly,which can greatly improve the level of reserves control and utilization of horizontal wells,and effectively improve the overall economic benefits of gas field development.The research and understanding have operability and application prospects in the actual development of dense gas.
引文
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[10]Wang Ruihe,Zhang Yuzhe,Bu Yuhuan,et al.A segmentally numerical calculation method for estimating the productivity of perforated horizontal wells[J].Petroleum Exploration and Development,2006,33(5):630-633.王瑞和,张玉哲,步玉环,等.射孔水平井产能分段数值计算[J].石油勘探与开发,2006,33(5):630-633.
[11]Wu Xiaodong,Sui Xianfu,An Yongsheng,et al.Electrolytic simulation experiment of fractured horizontal well[J].Acta Petrolei Sinica,2009,30(5):740-748.吴晓东,隋先富,安永生,等.压裂水平井电模拟实验研究[J].石油学报,2009,30(5):740-748.
[12]Wei Yunsheng,Jia Ailin,He Dongbo,et al.A new way of evaluating productivity of multi-stage fracturing horizontal well in tight gas reservoir[J].Drilling&Production Technology,2012,35(1):32-34.位云生,贾爱林,何东博,等.致密气藏分段压裂水平井产能评价新思路[J].钻采工艺,2012,35(1):32-34.
[13]He Dongbo,Wang Lijuan,Ji Guang,et al.Well spacing optimization for Sulige tight sand gas field,NW China[J].Petroleum Exploration and Development,2012,39(4):458-464.何东博,王丽娟,冀光,等.苏里格致密砂岩气田开发井距井网优化[J].石油勘探与开发,2012,39(4):458-464.
[14]Liu Yuetian.Methodology for horizontal well pattern design in anisotropic oil reservoirs[J].Petroleum Exploration and Development,2008,35(5):619-624.刘月田.各向异性油藏水平井开发井网设计方法[J].石油勘探与开发,2008,35(5):619-624.
[15]Ling Zongfa,Wang Lijuan,Hu Yongle,et al.Flood pattern optimization of horizontal well injection[J].Petroleum Exploration and Development,2008,35(1):85-91.凌宗发,王丽娟,胡永乐,等.水平井注采井网合理井距及注入量优化[J].石油勘探与开发,2008,35(1):85-91.
[16]Wang Zhengbiao.Geological design optimization of horizontal well[J].Petroleum Exploration and Development,2002,29(6):78-80.王振彪.水平井地质优化设计[J].石油勘探与开发,2002,29(6):78-80.
[17]Liu Yuetian.Analytic solution for flow through horizontal well network[J].Petroleum Exploration and Development,2001,28(3):57-66.刘月田.水平井整体井网渗流解析解[J].石油勘探与开发,2001,28(3):57-66.
[2]Giger F M.Low-permeability Reservoirs Development using Horizontal Wells[C].SPE 6406,Low Permeability Reservoirs Symposium,Denver,Colorado,18-19May,1985.
[3]Joshi S D.Horizontal Well Technology[M].Tulsa:Penn Well Publishing Company,1991.
[4]Meyer B R,Bazan L W,Jacot R H,et al.Optimization of Multiple Transverse Hydraulic Fractures in Horizontal Wellbores[C].SPE 131732,SPE Unconventional Gas Conference,Pittsburgh,Pennsylvania,USA,23-25February,2010.
[5]Bello R O,Wattenbarger R A.Multi-stage Hydraulically Fractured Shale Gas Rate Transient Analysis[C].SPE 126754,SPE North Africa Technical Conference and Exhibition,Cairo,Egypt,14-17February,2010.
[6]Jia Ailin,Tang Junwei,He Dongbo,et al.Geological modeling for sandstone reservoirs with low permeability and strong heterogeneity in Sulige Gas Field[J].China Petroleum Exploration,2007(1):12-16.贾爱林,唐俊伟,何东博,等.苏里格气田强非均质致密砂岩储层的地质建模[J].中国石油勘探,2007(1):12-16.
[7]He Dongbo,Jia Ailin,Ji Guang,et al.Well type and pattern optimization technology for large scale tight sand gas,Sulige Gas Field[J].Petroleum Exploration and Development,2013,40(1):79-89.何东博,贾爱林,冀光,等.苏里格大型致密砂岩气田开发井型井网技术[J].石油勘探与开发,2013,40(1):79-89.
[8]Li Junshi,Hou Jianfeng,Hu Yongle,et al.Performance analysis of unsteady porous flow in fractured horizontal wells[J].Petroleum Exploration and Development,2008,35(1):92-96.李军诗,侯建锋,胡永乐,等.压裂水平井不稳定渗流分析[J].石油勘探与开发,2008,35(1):92-96.
[9]Li Shusong,Duan Yonggang,Chen Wei.Porous flow characteristics of fractured horizontal well in mid deep tight gas reservoir[J].Petroleum Drilling Techniques,2006,34(5):65-69.李树松,段永刚,陈伟.中深致密气藏压裂水平井渗流特征[J].石油钻探技术,2006,34(5):65-69.
[10]Wang Ruihe,Zhang Yuzhe,Bu Yuhuan,et al.A segmentally numerical calculation method for estimating the productivity of perforated horizontal wells[J].Petroleum Exploration and Development,2006,33(5):630-633.王瑞和,张玉哲,步玉环,等.射孔水平井产能分段数值计算[J].石油勘探与开发,2006,33(5):630-633.
[11]Wu Xiaodong,Sui Xianfu,An Yongsheng,et al.Electrolytic simulation experiment of fractured horizontal well[J].Acta Petrolei Sinica,2009,30(5):740-748.吴晓东,隋先富,安永生,等.压裂水平井电模拟实验研究[J].石油学报,2009,30(5):740-748.
[12]Wei Yunsheng,Jia Ailin,He Dongbo,et al.A new way of evaluating productivity of multi-stage fracturing horizontal well in tight gas reservoir[J].Drilling&Production Technology,2012,35(1):32-34.位云生,贾爱林,何东博,等.致密气藏分段压裂水平井产能评价新思路[J].钻采工艺,2012,35(1):32-34.
[13]He Dongbo,Wang Lijuan,Ji Guang,et al.Well spacing optimization for Sulige tight sand gas field,NW China[J].Petroleum Exploration and Development,2012,39(4):458-464.何东博,王丽娟,冀光,等.苏里格致密砂岩气田开发井距井网优化[J].石油勘探与开发,2012,39(4):458-464.
[14]Liu Yuetian.Methodology for horizontal well pattern design in anisotropic oil reservoirs[J].Petroleum Exploration and Development,2008,35(5):619-624.刘月田.各向异性油藏水平井开发井网设计方法[J].石油勘探与开发,2008,35(5):619-624.
[15]Ling Zongfa,Wang Lijuan,Hu Yongle,et al.Flood pattern optimization of horizontal well injection[J].Petroleum Exploration and Development,2008,35(1):85-91.凌宗发,王丽娟,胡永乐,等.水平井注采井网合理井距及注入量优化[J].石油勘探与开发,2008,35(1):85-91.
[16]Wang Zhengbiao.Geological design optimization of horizontal well[J].Petroleum Exploration and Development,2002,29(6):78-80.王振彪.水平井地质优化设计[J].石油勘探与开发,2002,29(6):78-80.
[17]Liu Yuetian.Analytic solution for flow through horizontal well network[J].Petroleum Exploration and Development,2001,28(3):57-66.刘月田.水平井整体井网渗流解析解[J].石油勘探与开发,2001,28(3):57-66.