Geochemical characteristics and accumulation conditions of crude oils in well Ba 1, Tanzhuang Sag, Southern North China Basin
-
摘要: 通过对南华北盆地谭庄凹陷巴1井下白垩统原油的地球化学特征分析,认为该原油来自于下白垩统烃源岩,为自生自储型油藏.结合埋藏史-热演化史模拟结果分析,推测该原油经历了至少早(K1)、晚(N+Q)2期充注过程.油气成藏条件综合研究表明,谭庄凹陷下白垩统烃源岩品质较好、盖层封闭能力强、局部圈闭发育、匹配关系良好,但由于下白垩统砂岩为低孔低渗储层,物性整体差,制约了油气勘探的突破.建议开展高精度层序地层学研究和沉积相精细刻画,预测相对有利的储层砂体.Abstract: The analysis of the biomarker compositional characteristics of crude oils from the Lower Cretaceous of the Tanzhuang Sag in the Southern North China Basin indicated for the Lower Cretaceous origin,and the reservoir was indigenously generated and accumulated.According to the simulation of burial and thermal evolution histories,there were at least two stages of hydrocarbon charging in the study area.The early stage was the Early Cretaceous and the late stage was from the Late Tertiary to Quaternary.The studies of accumulation conditions revealed that the Lower Cretaceous source rocks in the Tanzhuang Sag had good quality,strong sealing capacity and nice allocation of generation-migration-accumulation;however,the Lower Cretaceous sandstones with low porosity and permeability restricted petroleum exploration.High resolution sequence stratigraphy and sedimentary facies studies were advised to predict favorable sandbodies.
-
[1] 孙自明,熊保贤.周口坳陷的逆冲推覆构造特征[J].石油勘探与开发,1999,26(3):22-26. [2] 陈祥,张琴,朱筱敏,等.南华北盆地谭庄凹陷下白垩统储集体成因类型及特征[J].石油实验地质,2010,32(2):124-129. [3] 谢其锋,周立发,何明喜,等.南华北盆地谭庄凹陷构造特征与下白垩统勘探前景[J].石油与天然气地质,2009,30(5):643-647. [4] 张琴,朱筱敏,陈祥,等.南华北盆地谭庄凹陷下白垩统成岩相分布及优质储层预测[J].石油与天然气地质,2010,31(4):472-480. [5] 杜建波,黄晓,马荣芳,等.谭庄-沈丘凹陷下白垩统油气勘探突破关键因素分析[J].石油天然气学报(江汉石油学院学报),2008,30(5):171-177. [6] 张功成,徐宏,王同和,等.中国含油气盆地构造[M].北京:石油工业出版社,1999:201-212. [7] 梁世友,何将启,倪春华,等.北黄海盆地中生界油源对比及成因分析[J].石油实验地质,2011,33(4):414-418. [8] 徐义卫.济阳坳陷八面河地区古近系孔店组油气成藏特征[J].石油与天然气地质,2011,32(3):352-359. [9] 白森舒,周小进,倪春华,等.南华北盆地谭庄凹陷巴1井下白垩统原油成因及地质意义[J].石油实验地质,2011,33(6):634-638. [10] Tissot B P,Welte D H.Petroleum formation and occurrence[M].New York:Springer-Verlag,1984. [11] Tegelaar E W,Matthezing R M,Jansen J B H,et al.Possible origin of n-alkanes in high wax crude oils[J].Nature,1989,342(6249):529-531. [12] 王飞宇,郝石生,何萍,等.泌阳凹陷湖相藻类体中藻质素作为高蜡油母质[J].科学通报,1997,42(11):1193-1196. [13] 黄海平,郑亚斌,张占文,等.低等水生生物:高蜡油形成的重要来源[J].科学通报,2003,48(10):1092-1098. [14] 吕慧,陈致林,王忠,等.济阳坳陷东营凹陷南斜坡高蜡原油高分子量烃类分布及高蜡成因[J].石油与天然气地质,2008,29(3):355-360. [15] 李文厚,陈景维,邵磊.周口坳陷早白垩世沉积相与沉积格局[J].岩相古地理,1996,16(1):44-50. [16] 饶丹,全书进.南华北盆地周口坳陷周参10井低产油流剖析[J].石油实验地质,2005,27(6):612-618. [17] 张立平,黄第藩,廖志勤.伽马蜡烷:水体分层的地球化学标志[J].沉积学报,1999,17(1):136-140. -
计量
- 文章访问数: 2217
- HTML全文浏览量: 66
- PDF下载量: 828
- 被引次数: 0
下载:
苏公网安备32021102000780号