摘要
为了预测渤海湾盆地辽河坳陷西部凹陷南段古近系异常低压背景下致密砂岩的类型与分布规律,讨论了沉积相和成岩作用对致密储集层物性的综合影响,应用异常低压力背景下的成岩数值模拟模型,预测了沙三段的成岩阶段,结合沉积相的研究成果,预测了异常低压背景下沙三中亚段的各种致密储集层类型在平面上的分布。结果表明,常规储集层(孔隙度φ≥10%)主要分布在研究区埋藏较浅的欢曙斜坡带;低致密储集层(6.0%≤φ<10%)和高致密储集层(2.0%≤φ<6.0%)主要分布在埋藏较深的凹陷区。
In order to predict types and distribution regulations of the Paleocene tight sandstone under abnormally low pressure in the Southern part of the West Sag of the Liaohe depressin in the Bohaiwan Basin,the integrated effects of sedimentary facies and diageneses on the property of the tight reservoirs have been studied,and the diagenetic stages and distribution of various tight reservoir types of the Es23 under abnormally low pressure have been predicted laterally by using diagenetic numerical modeling under abnormally low pressure in combination with the research results of sedimentary facies.The results show that the conventional reservoirs（porosity φ≥10%） are distributed mainly in the relatively shallow buried Huanshu Slop zone,while low density reservoirs（6.0% ≤φ 10%） and high density reservoirs（2.0% ≤φ 6.0%） are mainly distributed in the relatively deep buried Sag zone of the study area.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2016年第4期701-709,共9页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金项目(U1262106,41572135)
关键词
致密砂岩气
非常规油气
异常低压
成岩模拟
储集层质量预测
辽河坳陷
tight sandstone gas
unconventional gas and oil
underpressure
diagenetic modeling
reservoir quality prediction
Liaohe depression
