柴达木盆地油气勘探现状和突破方向
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摘要
柴达木盆地半个世纪的勘探历程表明,盆地的勘探工作有着明显的阶段性和复杂性“。十五”计划以来,遵循“加强前期、注重技术、突出重点、积极有效”的勘探方针,积极转变观念,解放思想,依靠新技术,油气勘探成果较为明显,尤其在柴西岩性油藏勘探方面已初见成效。随着地质认识的逐步深化和基础工作的深入,对柴达木盆地油气聚集条件、勘探潜力和下步勘探方向有了进一步的认识,提出了油田的发展目标。确定了“十一五”总的勘探思路:坚持甩开预探和风险勘探、坚持勘探开发一体化、坚持地震先行的3个原则,突出精细勘探碎屑岩和战略突破复杂区两个重点,实施精细研究和优化部署两项措施。油气勘探按照精细勘探、战略突破、积极准备3个层次进行,并提出了下步的勘探方向,其中,石油勘探:柴西南区、阿尔金山前带;柴北缘马海—南八仙构造带、柴北缘山前带、德令哈断陷;天然气勘探:三湖生物气区、柴西北区油型气、柴北缘煤型气。
The exploration in Qaidam Basin now has the characteristics of obvious stage and complexity after more than half century's development. Since the beginning of the Tenth Five-Year Plan period, Qaidam Basin has focused itself on following the principle of òstrengthening the earlier stage exploration, emphasizing technology, giving prominence to main points, and adopting effective measuresó, liberating exploration concept, and relying on advanced technologies and has obtained notable results in its oil and gas exploration, especially in lithology reservoir exploration in the western area. With the development of geologic cognition and fundamental work, hydrocarbon accumulation conditions, exploration potential, key target areas for next exploration have been more understood, and the target of the oilfield development has also been laid out. In addition, the general exploration concept of the 11th Five-Year Plan has been established, that is, insisting on the three principles of regional: preliminary exploration, risk exploration, as well as exploration and development integration, emphasizing two key stones including fine clastic rock exploration and strategic breakthroughs in complicated areas, undertaking fine research and optimization of deployment. Oil and gas exploration will be carried out in three stages, i.e., fine exploration, strategic breakthrough, and active preparation. The targets of next exploration are presented as well. With the respect to petroleum exploration, the southwestern area, the foothill belt of Altun, Mahai-Nanbaxian structural belt in the northern margin, the northern marginal foothill belt, and Delingha depression are the targets of petroleum exploration. In respect of natural gas exploration, the Sanhu biogas zone, the oil-type gas in the northwestern area, and the coal-type gas in the northern margin are the targets of natural gas exploration.
The exploration in Qaidam Basin now has the characteristics of obvious stage and complexity after more than half century's development. Since the beginning of the Tenth Five-Year Plan period, Qaidam Basin has focused itself on following the principle of òstrengthening the earlier stage exploration, emphasizing technology, giving prominence to main points, and adopting effective measuresó, liberating exploration concept, and relying on advanced technologies and has obtained notable results in its oil and gas exploration, especially in lithology reservoir exploration in the western area. With the development of geologic cognition and fundamental work, hydrocarbon accumulation conditions, exploration potential, key target areas for next exploration have been more understood, and the target of the oilfield development has also been laid out. In addition, the general exploration concept of the 11th Five-Year Plan has been established, that is, insisting on the three principles of regional: preliminary exploration, risk exploration, as well as exploration and development integration, emphasizing two key stones including fine clastic rock exploration and strategic breakthroughs in complicated areas, undertaking fine research and optimization of deployment. Oil and gas exploration will be carried out in three stages, i.e., fine exploration, strategic breakthrough, and active preparation. The targets of next exploration are presented as well. With the respect to petroleum exploration, the southwestern area, the foothill belt of Altun, Mahai-Nanbaxian structural belt in the northern margin, the northern marginal foothill belt, and Delingha depression are the targets of petroleum exploration. In respect of natural gas exploration, the Sanhu biogas zone, the oil-type gas in the northwestern area, and the coal-type gas in the northern margin are the targets of natural gas exploration.
引文
[1]张一伟,党玉琪,刘震,等.柴达木盆地油气分布基本规律[A].见:柴达木盆地油气勘探论文集[C].北京:石油工业出版社,2004:8～9
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