石油学报 ›› 2013, Vol. 34 ›› Issue (2): 219-224.DOI: 10.7623/syxb201302002

• 地质勘探 • 上一篇    下一篇

塔北隆起雅克拉凝析油气田油气充注途径示踪

李洪波 1,2,3   王铁冠 1   李美俊 1   

  1. 1. 中国石油大学油气资源与探测国家重点实验室 北京 102249; 2. 长江大学油气资源与勘探技术教育部重点实验室 湖北荆州 434023; 3. 长江大学地球化学系 湖北荆州 434023
  • 收稿日期:2012-09-18 修回日期:2012-12-18 出版日期:2013-03-25 发布日期:2013-01-31
  • 通讯作者: 李洪波
  • 作者简介:李洪波,男,1981年9月生,2010年获中国石油大学(北京)博士学位,现为长江大学地球化学系讲师,主要从事油气地球化学教学与研究工作。
  • 基金资助:

    湖北省教育厅优秀中青年人才项目(Q20111303)资助。

Tracing study on oil-gas filling pathways of Yakela gas condensate field in Tabei uplift

LI Hongbo 1,2,3   WANG Tieguan 1   LI Meijun 1   

  • Received:2012-09-18 Revised:2012-12-18 Online:2013-03-25 Published:2013-01-31

摘要:

依据原油的三萜烷Ts/(Ts+Tm)、咔唑类含氮化合物总量、1,8-/2,4-DMC与4-/1-MDBT等分子参数,示踪塔北隆起雅克拉凝析油气田下白垩统亚格列木组油气充注途径。研究表明,雅克拉凝析油气田原油运移分馏效应显著,原油运移具有主、次两条油气运移与充注成藏的途径;主要充注途径以油气田东端S7-YK13井区为充注点,油气平行轮台断裂,顺沿背斜长轴,从NEE向SWW方向充注成藏;次要充注途径则从油气田SE翼沿NW方向,往构造轴部充注。上述油气运移充注途径受到雅克拉凝析油气田南侧轮台断裂的制约,后者堪称塔北隆起一条重要的油源通道。

关键词: 塔北隆起, 雅克拉凝析油气田, 轮台断裂, 油气充注途径, 含氮化合物, 二苯并噻吩

Abstract:

Molecular parameters such as triterpanes Ts/(Ts+Tm), total concentration of carbazole compounds, 1,8-/2,4-DMC and 4-/1-MDBT were used as “tracers” to investigate oil-gas migration and accumulation of the Yageliemu Formation (K 1y) in the Yakela gas condensate field in the Tabei uplift. The results indicated that in the K 1y oil reservoir, oil migration and reservoir filling have major and minor pathways with significant fractionation effect. It was suggested that the main charging point should be around S-7 and YK-13 wells located at the eastern end of the reservoir. Oil migrated in parallel with the Luntai fault and along the long axis of the anticline with NEE-SWW direction. And there exits a secondary filling point in the southeast of the oil reservoir. Oil migrated towards NW direction and accumulated at the structural high. Both the above-mentioned oil-gas filling pathways were apparently controlled by the Luntai fault in the south of the Yakela gas condensate field, which is supposed to be a major oil-gas migration pathway in the Tabei uplift.

Key words: Tabei uplift, Yakela gas condensate field, Luntai fault, oil-gas filling pathway, nitrogenous compound, dibenzothiophene