RELATION BETWEEN GEOTHERMAL-GEOPRESSURE SYSTEM AND PETROLEUM ACCUMULATION IN MOLIQING RIFT IN YITONG BASIN
-
摘要: 基于地温和地压实测数据及声波测井资料等,利用地温-地压系统的原理,对伊通盆地莫里青断陷的地温场、压力场及温压系统特征进行了剖析,并从油气生成、保存及分布角度探讨了温压系统与油气成藏的关系。研究表明,断陷内各区带地温梯度较高,有利于有机质的成熟与烃类生成;泥岩欠压实段主要出现在双阳组,强化了油气的封闭作用;斜坡带泥岩不发育异常压力,以毛细管压力封闭为主;莫里青断陷发育弱高压型复式温压系统,上下2套温压系统流体能量相差较小,油气垂向运聚活动很少,深部弱高压型温压系统内部最有利于油气富集成藏,双阳组含油气系统是最重要的勘探对象。Abstract: Based on the data of geothermal, geopressure and acoustic log, the characteristics of geothermal and geopressure fields and geothermal-geopressure system of Moliqing rift in Yitong basin are analyzed by using the theory of geothermal-geopressure system. The relation between geothermal-geopressure system and petroleum accumulation is also discussed on the view of hydrocarbon generation, preservation and distribution in the studied area. The research results show that Moliqing area presents high geothermal gradient which is favorable for organic matter maturation and hydrocarbon generation. Undercompaction mudstone appears in the Shuangyang Formation and it enhances the seal of oil-gas. Abnormal pressure does not occur in the ramp region, and capillary pressure acts as the main control factor for sealing the hydrocarbon. Moliqing rift has a geothermal-geopressure system with low overpressure. Because the fluid energy is similar between the upper and the lower geothermal-geopressure system, the vertical migration and accumulation of hydrocarbon are not obvious and the inner low overpressure system is most favorable for hydrocarbon accumulation. The Es2 petroleum system is the most important object for oil-gas exploration in this studied area.
-
-
[1] 刘震,贺维英,韩军,等. 准噶尔盆地东部地温地压系统与油气运聚成藏的关系[J]. 石油大学学报,2000,24(4):15-20. [LIU Zhen, HE Wei-ying, HAN Jun,et al. Relation of geotemperature-formation pressure systems with migration and accumulation of petroleum in the east of Junggar basin 2000[J]. Journal of the University of Petroleum,2000, 24(4):15-20.]
[2] 肖焕钦,刘震,赵阳,等. 济阳坳陷地温-地压场特征及其石油地质意义[J]. 石油勘探与开发,2003,30(3):68-70. [XIAO Huan-qin, LIU Zhen, ZHAO Yang, et al. Characteristics of geotemperature and geopressure fields in the Jiyang depression and their significance of petroleum geology[J]. Petroleum Exploration and Development, 2003, 30(3):68-70.]
[3] 梁春秀,魏志平,李本才,等. 伊兰-伊通盆地输导体系与油气运聚[J].天然气工业,2002,22(1):31-32. [LIANG Chun-xiu, WEI Zhi-ping,LI Ben-cai,et al. Carrying bed systems and oil -gas migration in Yilan-Yitong basin[J]. Natural Gas Industry, 2002, 22(1):31-32.]
[4] 黄湘通,方石,许海华. 伊通地堑莫里青盆地双阳组储层敏感性研究[J]. 世界地质,2002,21(4):347-352. [HUANG Xiang-tong, FANG Shi, XU Hai-hua. Reservoir sensibility research on Shuangyang Formation in Moliqing basin of Yitong graben[J]. World Geology, 2002, 21(4):347-352.]
[5] 童亨茂,纪洪勇,宋立忠,等. 伊通地堑构造样式及其油气分布规律[J]. 西安石油学院学报自然科学版,2002,17(5):9-14. [TONG Heng-mao, JI Hong-yong,SONG Li-zhong,et al. Tectonic styles and oil-gas distribution in Yitong graben[J]. Journal of Xi'an Petroleum Institute(Natural Science Edition),2002,17(5):9-14.]
[6] 黄志龙,高岗. 莫里青断陷天然气成因与运聚模式[J]. 天然气地球科学,2005,16(3):2-5. [HUANG Zhi-long, GAO Gang. The natural gas origin and the model of oil-gas migration-accumulation in Moliqing rift[J]. Natural Gas Geoscience, 2005, 16(3):2-5.]
[7] 黄志龙,高岗,刘鸿友. 伊通地堑天然气地球化学特征与运移效应[J]. 地质地球化学,2002,30(3):59-63. [HUANG Zhi-long, GAO Gang, LIU Hong-you. The geochemical behavior of natural gas and efficiency of migration in Yitong Garbon[J]. Geology-Geochemistry, 2002, 30(3):59-63.]
[8] 刘鸿友,彭苏萍,魏志平,等. 伊通地堑原油特征与成熟度[J]. 石油勘探与开发,2002,29(3):21-24. [LIU Hong-you, PENG Su-ping,WEI Zhi-ping,et al. Characteristics and maturity of crude oil in Yitong graben[J]. Petroleum Exploration and Development, 2002, 29(3):21-24.]
[9] 李本才,刘鸿友,杜怀旭,等. 伊通盆地含油气系统与油气藏[J]. 中国石油勘探,2003,8(3):38-46. [LI Ben-cai, LIU Hong-you, DU Huai-xu,et al. The Petroleum system and accumulation in Yitong Basin[J]. China Petroleum Exploration, 2003, 8(3):38-46.]
[10] 刘震,曾宪斌,张万选. 沉积盆地地温与地层压力关系分析[J]. 地质学报,1997,71(2):180-185. [LIU Zhen, ZENG Xian-bin,ZHANG Wan-xuan. Relation between subsurface temperatures and formation pressures in sedimentary basins[J]. Acta Geologica Sinica, 1997, 71(2):180-185.]
[11] 王永春. 伊通地堑含油气系统与油气成藏[M]. 北京:石油工业出版社,2002:143-173.[WANG Yong-chun. Petroleum system and accumulation in Yitong Garben[M]. Beijing:Petroleum Industry Press, 2002:143 -173.]
[12] Magoon L B,Dow W G. The petroleum system[C]//The Petroleum System-from Source to Trap. AAPG Memoir 60. 1994:3-24.
计量
- 文章访问数: 1673
- HTML全文浏览量: 166
- PDF下载量: 7
下载:
