准噶尔盆地天然气勘探实践与克拉美丽气田的发现
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摘要
2006年初,中国石油新疆油田公司确定了准噶尔盆地天然气勘探的4大领域,根据"突破东西两翼、坚持南缘、探索深层大构造"的部署原则,将陆东—五彩湾地区作为主攻领域,由此发现了天然气探明储量超过1000×108m3的克拉美丽气田。总结陆东—五彩湾地区石炭系火山岩气藏的勘探实践工作,具有重大意义。为此详细阐述了该区火山岩气藏勘探的7个步骤,即:①综合分析选择突破口———滴南凸起;②开展火山岩岩性岩相研究,建立火山岩序列结构;③解剖已知气藏,确定控藏因素与气藏类型;④开展地震采集处理攻关,改善石炭系内幕成像质量;⑤井震结合识别火山岩体,综合评价优选钻探井位;⑥加强组织管理,探索适宜钻试工艺,加快勘探节奏;⑦勘探开发一体化,加快产能建设步伐。归纳了在滴南凸起石炭系火山岩油气勘探实践过程中逐步形成的6项配套技术。结论指出:市场需求是驱动中国石油新疆油田公司天然气勘探快速发展的重要动力,勘探领域及其突破口的正确选择是发现该气田的关键;合理的勘探程序和适宜的配套技术是该气田能够快速探明并投产的保证。
In the early 2006,the PetroChina Xinjiang Oilfield Company made sure four domains for gas exploration in the Junggar Basin and adopted the principle of exploring giant structure traps in the deep formations from south base to east and west sides in this basin to chose the Ludong-Wucaiwan area as the primary domain,where the Kelameili gas field with proved gas reserves of over 100 bcm was discovered in the Carboniferous volcanic rocks.The exploration of the volcanic oil and gas reservoirs in this area has been carried out in the following seven steps:a.The Dinan salient was selected as the primary exploration target based on comprehensive exploration;b.The volcanic sequence was established based on lithologic and lithofacies study;c.Factors controlling hydrocarbon pooling and gas pool types were defined through analyzing the known gas pools;d.The imaging quality of the inner Carboniferous was improved by enhancing seismic acquisition and processing;e.Volcanic bodies were identified through seismic and well data integration and the emplacement of exploration wells was optimized based on comprehensive evaluation;f.Management was strengthened and suitable drilling and testing techniques were developed to speed up exploration;g.Production capacity construction was speeded up through integrated exploration and development.In addition,the six technology series that have been developed during the exploration of the Carboniferous volcanic reservoirs in the Dinan uplift were presented here.It is concluded that a.market demand was the incentive factor for the rapid growth of gas exploration of this company,b.the optimization of exploration domain and the selection of the primary target were the key to the successful discovery of the Kelameili gas field,and c.an optimal exploration procedure and suitable technique series guaranteed this field to be rapidly proved and developed.
In the early 2006,the PetroChina Xinjiang Oilfield Company made sure four domains for gas exploration in the Junggar Basin and adopted the principle of exploring giant structure traps in the deep formations from south base to east and west sides in this basin to chose the Ludong-Wucaiwan area as the primary domain,where the Kelameili gas field with proved gas reserves of over 100 bcm was discovered in the Carboniferous volcanic rocks.The exploration of the volcanic oil and gas reservoirs in this area has been carried out in the following seven steps:a.The Dinan salient was selected as the primary exploration target based on comprehensive exploration;b.The volcanic sequence was established based on lithologic and lithofacies study;c.Factors controlling hydrocarbon pooling and gas pool types were defined through analyzing the known gas pools;d.The imaging quality of the inner Carboniferous was improved by enhancing seismic acquisition and processing;e.Volcanic bodies were identified through seismic and well data integration and the emplacement of exploration wells was optimized based on comprehensive evaluation;f.Management was strengthened and suitable drilling and testing techniques were developed to speed up exploration;g.Production capacity construction was speeded up through integrated exploration and development.In addition,the six technology series that have been developed during the exploration of the Carboniferous volcanic reservoirs in the Dinan uplift were presented here.It is concluded that a.market demand was the incentive factor for the rapid growth of gas exploration of this company,b.the optimization of exploration domain and the selection of the primary target were the key to the successful discovery of the Kelameili gas field,and c.an optimal exploration procedure and suitable technique series guaranteed this field to be rapidly proved and developed.
引文
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[2]宋岩,房德权,洪峰,等.准噶尔盆地天然气富集规律[J].新疆石油地质,1999,20(增刊):564-567.
[3]张义杰,王绪龙,刘得光.准噶尔盆地天然气资源勘探战略与对策[J].新疆石油地质,2001,22(5):386-389.
[4]况军,刘得光,李世宏.准噶尔盆地天然气藏地质特征及分布规律[J].新疆石油地质,2001,22(5):390-392.
[5]方世虎,宋岩,贾承造,等.准噶尔盆地白垩系底砾岩与油气成藏的关系[J].天然气工业,2006,26(5):13-16.
[6]李耀华.准噶尔盆地南缘天然气成藏模式及勘探方向[J].天然气工业,2001,21(4):27-31.
[7]张朝军,石昕,吴晓智,等.准噶尔盆地石炭系油气富集条件及有利勘探领域预测[J].中国石油勘探,2005,10(1):11-15.
[8]杨斌,李建新.准噶尔盆地东部油区石炭系原油探讨[J].新疆石油地质,1992,13(2):171-178.
[9]靳军,刘洛夫,余兴云,等.陆东—五彩湾地区石炭系火山岩气藏勘探进展[J].天然气工业,2008,28(5):21-23.
[10]杨斌,严志民.准东石炭系原油地球化学特征[J].新疆石油地质,2002,23(6):478-481.
[11]王绪龙.准噶尔盆地石炭系的生油问题[J].新疆石油地质,1996,17(3):230-233.
[12]石昕,王绪龙,张霞,等.准噶尔盆地石炭系烃源岩分布及地球化学特征[J].中国石油勘探,2005,10(1):34-39.
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