墨西哥Sureste盆地成藏组合及勘探潜力

发布时间：2018-02-09 06:37

本文关键词： 成藏要素成藏模式成藏组合勘探潜力 Sureste盆地墨西哥　出处：《地学前缘》2017年03期 　论文类型：期刊论文

【摘要】：Sureste盆地为墨西哥油气最富集的盆地,但与墨西哥湾北部相比仍存在很大的勘探潜力。在分析油气成藏要素、成藏模式的基础上,首次对成藏组合进行了划分与评价,指明了盆地的勘探潜力。研究表明:以上侏罗统提塘阶为主的4套烃源岩为盆地提供了丰富的物质基础,5套碳酸盐岩和碎屑岩优质储层为盆地提供了多样的勘探层系。受盐岩活动、构造运动和沉积负载的共同控制,盆地发育6种圈闭类型和4种成藏模式。据此,将成藏组合在纵向上划分为深部、中部、浅部3套,其展布范围、控制因素及勘探程度各不相同。目前油气发现在中部成藏组合最为富集,其中深部和中部成藏组合以断层沟通下生上储的挤压背斜油气藏为主,浅部成藏组合以"盐岩+断层"沟通下生上储的盐刺穿相关油气藏为主。盆地未来勘探潜力主要集中在陆上深层和海上深水。陆上深层深部成藏组合的牛津阶风成砂岩勘探程度很低。海上深水至今未有油田投产,其西侧以浅部成藏组合为目标,东侧以中部成藏组合为目标,南侧以深部成藏组合为目标。
[Abstract]:The Sureste basin is the most oil-gas enriched basin in Mexico, but it still has great exploration potential compared with the northern part of the Gulf of Mexico. Based on the analysis of the oil and gas accumulation elements and the reservoir forming model, the oil and gas accumulation assemblage is classified and evaluated for the first time. The exploration potential of the basin is pointed out. The study shows that the above Jurassic Tiitang stage provides abundant material basis for the basin and 5 sets of high quality carbonate and clastic reservoirs provide various exploration for the basin. Strata. Salt rock activity, Under the common control of tectonic movement and sedimentary load, there are 6 trap types and 4 reservoir forming models developed in the basin. According to this, the reservoir forming assemblage is divided into deep, middle and shallow three sets vertically, and its distribution range. The controlling factors and exploration degree are different. At present, oil and gas discovery is most abundant in the middle part of the oil and gas accumulation assemblage, in which the deep and middle reservoirs are mainly composed of compressional anticline oil and gas reservoirs which are generated and stored under fault communication. The shallow reservoir formation assemblage is dominated by "salt rock fault" linking the salt piercing oil and gas reservoirs. The exploration potential of the basin in the future is mainly concentrated in the deep land and deep sea. The Oxford step wind of the deep reservoir formation assemblage in the deep layer on the land. The exploration level of sandstone is very low. No oil fields have been put into production in deep water. On the west side, the shallow reservoir formation assemblage is the target, the east side is the central one, and the south side is the deep reservoir formation assemblage.
【作者单位】：中国海洋石油总公司;
【基金】：国家科技重大专项“大陆边缘盆地类比与油气成藏规律研究”(2011ZX05030-001) 中国海洋石油国际有限公司项目“墨西哥第一轮招标项目评价”(2014-HW-12)
【分类号】：P618.13

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