石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (3): 385-391,398.doi: 10.11743/ogg20120307

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鸡西盆地致密砂岩气存在的可能性

王伟明1, 卢双舫1, 王世辉2, 刘世恩3, 王贵磊1, 穆国栋1, 蒋思芹4, 徐建军5   

  1. 1. 东北石油大学 地球科学学院, 黑龙江 大庆 163318;
    2. 中国石油 大庆油田公司 勘探开发研究院, 黑龙江 大庆 163300;
    3. 承德石油高等专科学校, 河北 承德067000;
    4. 中国石油 大庆油田公司 第六采油厂, 黑龙江 大庆 163114;
    5. 中国石油 吉林油田公司 新木采油厂, 吉林 松原 138000
  • 收稿日期:2011-12-29 修回日期:2012-04-10 出版日期:2012-06-28 发布日期:2012-07-10
  • 作者简介:王伟明(1981-),男,博士研究生、讲师,油气地球化学。
  • 基金资助:

    国家自然科学基金项目(40972101);国家重点基础研究发展规划("973"计划)项目(2009CB219306)。

Possibility of tight sand gas reservoirs in Jixi Basin

Wang Weiming1, Lu Shuangfang1, Wang Shihui2, Liu Shi’en3, Wang Guilei1, Mu Guodong1, Jiang Siqin4, Xu Jianjun5   

  1. 1. Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
    2. Petroleum Exploration and Development Institute, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163000, China;
    3. Chengde Petroleum College, Chengde, Hebei 067000, China;
    4. No.6 Oil Production Plant, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163114, China;
    5. Xinmu Oil Production Plant, PetroChina Jinlin Oilfield Company, Songyuan, Jilin 138000, China
  • Received:2011-12-29 Revised:2012-04-10 Online:2012-06-28 Published:2012-07-10

摘要:

鸡西盆地的油气勘探程度较低,尤其是对致密砂岩气的研究尚处于起步阶段。在总结国内外成功地区致密砂岩气成藏条件的基础上,从构造、烃源岩以及储层条件等方面探讨了鸡西盆地致密砂岩气的成藏条件。依据鸡D8井暗色泥岩样品的地球化学资料,使用化学动力学法计算了研究区致密砂岩气的资源量。研究表明,鸡西盆地属于小型断陷盆地,多期构造演化与储层快速沉积等特点,决定了研究区不具备类似北美阿尔伯达等成功地区的大型致密砂岩气成藏的地质条件。但鸡西盆地城子河组大规模发育的煤系地层长期生气,为致密砂岩气藏的形成提供了充足的气源,烃源岩与储集层紧密叠置接触也有利于致密气的运移和保存。在鸡西盆地的中央凹陷构造稳定区域,寻找致密储层的甜点区,将有机会获得致密砂岩气藏的勘探突破。

关键词: 化学动力学, 成藏条件, 资源潜力, 断陷盆地, 致密砂岩气, 鸡西盆地

Abstract:

Jixi Basin is still immature in petroleum exploration,especially for tight sand gas.Based on summarizing accumulation conditions of tight sand gas reservoirs at home and abroad,we discussed the tight sand gas accumulation conditions in Jixi Basin in respects of structure,source rock and reservoir.According to the geoche-mical data of the dark mudstone samples of Ji D8 well,the tight sand gas resources was estimated by the method of chemical kinetics.The results show that Jixi Basin is a small rifted basin featuring in multiple-cyclic tectonic evolution and rapid deposition.Its tight gas geological conditions are quite different from the large tight sand gas reservoirs in North America.However,large-scale coalbeds in the Chengzihe Formation in Jixi Basin provide abundant gas source for the tight sand gas reservoirs.Superimposition and closely contact of source rocks and re-servoir are also in favor of the migration and accumulation of gas.Sweet spots of tight sand gas may exist in the tectonically stable region of the central depression in Jixi Basin.

Key words: chemical kinetics, hydrocarbon accumulation, resource potential, faulted basin, tight sand gas, Jixi Basin

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