苏里格地区天然气勘探新进展
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摘要
苏里格地区位于鄂尔多斯盆地西北部,勘探面积约4×104km2。该区地表条件复杂、地震信噪比低,储层岩性复杂、非均质性较强,气层有效厚度较薄、单井产量低,勘探难度较大。近年来,中国石油长庆油田公司通过深化地质综合研究及勘探技术攻关,明确了苏里格气田有效储层分布和天然气富集规律,创新形成了地震有效储层预测、复杂气层测井评价、致密砂岩储层改造等先进适用的勘探技术。勘探目标从砂体预测转向有效储层与含气性预测,通过整体勘探,探明了我国第一个超万亿立方米储量的整装大气田,探明天然气地质储量规模达2.85×1012m3,同时在苏里格南部地区形成了新的资源接替区。预计2015年以前,苏里格地区的天然气储量规模可超过3.5×1012m3,天然气年产量将达到230×108m3。
The Sulige is situated in the northwest of the Ordos Basin with an exploration area of 40,000 km2,where,under complicated surface conditions,a low signal-to-noise ratio is obtained in seismic data acquisition,the complex lithology reservoirs are of heterogeneous intensity,the effective thickness of gas pay zones is rather small,and per-well production is quite low.All these above will result in the great difficulty in this area's gas exploration.In view of this,the PetroChina Changqing Oilfield Company has made deep investigation into integrated geological research and has developed many exploration techniques.As a result,effective gas reservoir distribution and gas enrichment rules in the Sulige Gas Field are clarified,and advanced and practical exploration techniques are formed including the seismic forecast on effective gas reservoirs,the logging evaluation on the complicated gas pay zones,the stimulation measures of dense sandstone gas reservoirs,and so on.Moreover,this company's exploration target has turned its forecast from the sand body to effective gas reservoirs and gas-bearing properties.Through overall exploration in the Sulige area,a first mono-block gas field with the reserves of more than 10 trillion cubic meters has been explored,where the original gas in place is up to 2.85 trillion cubic meters,and the southern Sulige part has become a new gas resource turn-over zone.It is predicted that by 2015,the accumulated proved gas reserves in the Sulige area will be over 3.5 trillion cubic meters and the annual gas production there will be up to 23 billion cubic meters.
The Sulige is situated in the northwest of the Ordos Basin with an exploration area of 40,000 km2,where,under complicated surface conditions,a low signal-to-noise ratio is obtained in seismic data acquisition,the complex lithology reservoirs are of heterogeneous intensity,the effective thickness of gas pay zones is rather small,and per-well production is quite low.All these above will result in the great difficulty in this area's gas exploration.In view of this,the PetroChina Changqing Oilfield Company has made deep investigation into integrated geological research and has developed many exploration techniques.As a result,effective gas reservoir distribution and gas enrichment rules in the Sulige Gas Field are clarified,and advanced and practical exploration techniques are formed including the seismic forecast on effective gas reservoirs,the logging evaluation on the complicated gas pay zones,the stimulation measures of dense sandstone gas reservoirs,and so on.Moreover,this company's exploration target has turned its forecast from the sand body to effective gas reservoirs and gas-bearing properties.Through overall exploration in the Sulige area,a first mono-block gas field with the reserves of more than 10 trillion cubic meters has been explored,where the original gas in place is up to 2.85 trillion cubic meters,and the southern Sulige part has become a new gas resource turn-over zone.It is predicted that by 2015,the accumulated proved gas reserves in the Sulige area will be over 3.5 trillion cubic meters and the annual gas production there will be up to 23 billion cubic meters.
引文
[1]杨华,傅锁堂,马振芳,等.快速高效发现苏里格大气田的成功经验[J].中国石油勘探,2001,6(4):89-94.
[2]何自新,付金华,席胜利,等.苏里格大气田成藏地质特征[J].石油学报,2003,24(2):6-12.
[3]YANG Hua,FU Jinhua,WEI Xinshan,et al.Sulige field inthe Ordos Basin:geological setting,field discovery andtight gas reservoirs[J].Marine and Petroleum Geology,2008,25(4/5):387-400.
[4]冉新权,何光怀.关键技术突破,集成技术创新,实现苏里格气田规模有效开发[J].天然气工业,2007,27(12):1-5.
[5]杨华,席胜利,魏新善,等.苏里格地区天然气勘探潜力分析[J].天然气工业,2006,26(12):45-48.
[6]杨华,魏新善.鄂尔多斯盆地苏里格地区天然气勘探新进展[J].天然气工业,2007,27(12):6-11.
[7]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):45-51.
[8]李仲东,惠宽洋,李良,等.鄂尔多斯盆地上古生界天然气运移特征及成藏过程分析[J].矿物岩石,2008,28(3):77-83.
[9]刘新社,周立发,侯云东.运用流体包裹体研究鄂尔多斯盆地上古生界天然气成藏[J].石油学报,2008,28(6):37-42.
[10]窦伟坦,刘新社,王涛,等.鄂尔多斯盆地苏里格气田地层水成因及气水分布规律[J].石油学报,2010,31(5):766-773.
[11]赵林,夏新宇,戴金星.鄂尔多斯盆地上古生界天然气的运移与聚集[J].地质地球化学,2000,28(3):48-53.
[12]汪泽成,陈孟晋,王震,等.鄂尔多斯盆地上古生界克拉通坳陷盆地煤成气成藏机制[J].石油学报,2006,27(5):8-12.
[13]戴金星,陈践发,钟宁宁,等.中国大气田及其气源[M].北京:科学出版社,2003:170-194.
[14]戴金星,邹才能,陶士振,等.中国大气田形成条件和主控因素[J].天然气地球科学,2007,18(4):474-483.
[15]邹才能,陶士振,朱如凯,等.“连续性”气藏及其大气区形成机制与分布——以四川盆地上三叠统须家河组煤系大气区为例[J].石油勘探与开发,2009,36(3):307-319.
[16]曾溅辉,金之钧.油气二次运移和聚集物理模拟[M].北京:石油工业出版社,2000:74-83.
[17]姜福杰,庞雄奇,姜振学,等.致密砂岩气藏成藏过程的物理模拟实验[J].地质评论,2007,53(6):844-849.
[18]窦伟坦,杜玉斌,于波.全数字地震叠前储层预测技术在苏里格天然气勘探中的研究与应用[J].岩性油气藏,2009,21(4):63-68.
[19]杨双定,赵建武,唐文江,等.低孔隙度、低渗透率储层气层识别新方法[J].测井技术,2005,29(1):43-45.
[20]才博,王欣,蒋廷学,等.苏里格气田下二叠统储层改造难点及对策[J].天然气工业,2009,29(12):59-61.
[2]何自新,付金华,席胜利,等.苏里格大气田成藏地质特征[J].石油学报,2003,24(2):6-12.
[3]YANG Hua,FU Jinhua,WEI Xinshan,et al.Sulige field inthe Ordos Basin:geological setting,field discovery andtight gas reservoirs[J].Marine and Petroleum Geology,2008,25(4/5):387-400.
[4]冉新权,何光怀.关键技术突破,集成技术创新,实现苏里格气田规模有效开发[J].天然气工业,2007,27(12):1-5.
[5]杨华,席胜利,魏新善,等.苏里格地区天然气勘探潜力分析[J].天然气工业,2006,26(12):45-48.
[6]杨华,魏新善.鄂尔多斯盆地苏里格地区天然气勘探新进展[J].天然气工业,2007,27(12):6-11.
[7]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):45-51.
[8]李仲东,惠宽洋,李良,等.鄂尔多斯盆地上古生界天然气运移特征及成藏过程分析[J].矿物岩石,2008,28(3):77-83.
[9]刘新社,周立发,侯云东.运用流体包裹体研究鄂尔多斯盆地上古生界天然气成藏[J].石油学报,2008,28(6):37-42.
[10]窦伟坦,刘新社,王涛,等.鄂尔多斯盆地苏里格气田地层水成因及气水分布规律[J].石油学报,2010,31(5):766-773.
[11]赵林,夏新宇,戴金星.鄂尔多斯盆地上古生界天然气的运移与聚集[J].地质地球化学,2000,28(3):48-53.
[12]汪泽成,陈孟晋,王震,等.鄂尔多斯盆地上古生界克拉通坳陷盆地煤成气成藏机制[J].石油学报,2006,27(5):8-12.
[13]戴金星,陈践发,钟宁宁,等.中国大气田及其气源[M].北京:科学出版社,2003:170-194.
[14]戴金星,邹才能,陶士振,等.中国大气田形成条件和主控因素[J].天然气地球科学,2007,18(4):474-483.
[15]邹才能,陶士振,朱如凯,等.“连续性”气藏及其大气区形成机制与分布——以四川盆地上三叠统须家河组煤系大气区为例[J].石油勘探与开发,2009,36(3):307-319.
[16]曾溅辉,金之钧.油气二次运移和聚集物理模拟[M].北京:石油工业出版社,2000:74-83.
[17]姜福杰,庞雄奇,姜振学,等.致密砂岩气藏成藏过程的物理模拟实验[J].地质评论,2007,53(6):844-849.
[18]窦伟坦,杜玉斌,于波.全数字地震叠前储层预测技术在苏里格天然气勘探中的研究与应用[J].岩性油气藏,2009,21(4):63-68.
[19]杨双定,赵建武,唐文江,等.低孔隙度、低渗透率储层气层识别新方法[J].测井技术,2005,29(1):43-45.
[20]才博,王欣,蒋廷学,等.苏里格气田下二叠统储层改造难点及对策[J].天然气工业,2009,29(12):59-61.
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