断砂配置侧向输导油气特征的影响因素及其与油气聚集的关系  

Influencing factors of lateral transport characteristics of oil and gas in fault sand configuration and its relation with oil and gas accumulation

作　　者：曹兰柱 李熹微 鱼占文 项鑫 王紫豪 穆燕 张新樵 CAO Lanzhu;LI Xiwei;YU Zhanwen;XIANG Xin;WANG Zihao;MU Yan;ZHANG Xinqiao(Exploration and Development Research Institute,Huabei Oilfield Company CNPC,Renqiu 062552,China;School of Geosciences,Northeast Petroleum University,Daqing 163318,China;Department of Oil-Gas Production Capacity Construction,Tarim Oilfield Company CNPC,Korla 841000,China)

机构地区：[1]中国石油华北油田公司勘探开发研究院,河北任丘062552 [2]东北石油大学地球科学学院,黑龙江大庆163318 [3]中国石油塔里木油田油气田产能建设事业部,新疆库尔勒841000

出　　处：《成都理工大学学报（自然科学版）》2021年第5期549-557,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家科技重大专项(2016ZX05006-005);中国石油科技重大专项(2017E-15);黑龙江省自然科学基金研究团队项目(TD2019D001)。

摘　　要：探讨含油气盆地下生上储式断裂附近油气纵向分布规律。结合油气分布,对断砂配置侧向输导油气特征的影响因素及其与油气聚集的关系进行研究,结果表明:区域性盖层封闭,断砂配置侧向输导油气发生在区域性盖层之下的层段内,油气聚集分布在区域性盖层之下的层段;若区域性盖层不封闭,油气聚集分布在区域性盖层上下层段内。断裂两侧地层砂地比高,断砂配置侧向输导油气能力强,有利于油气的聚集;而低砂地比地层砂体中不利于油气聚集。断裂和砂体输导油气优势路径耦合关系越好,断砂配置侧向输导油气数量相对越多,越有利于油气聚集;反之则不利于油气聚集。断砂配置侧向输导油气特征的影响因素及其与油气聚集的关系主要表现在3个方面:断砂配置侧向输导油气层段受到区域性盖层封闭与否的控制;断砂配置侧向输导油气层位受到断裂两侧地层砂地比值相对大小的控制;断砂配置侧向输导油气数量受到断裂和砂体输导油气优势路径的耦合关系的控制。The vertical distribution regularity of oil and gas near the lower-generation and upper-accumulation faults in petroliferous basins is discussed and the influencing factors of lateral transport of oil and gas characteristics of fault sand configuration and the relationship with oil and gas accumulation are studied.The results show that if the regional cap rock is a closed one,the lateral transport of oil and gas in fault sand configuration occurs in the layers beneath the regional cap rock,and the oil and gas accumulation is distributed in the layers under the regional cap rock.If the regional cap rock is not sealed,then,the oil and gas accumulates in the upper and lower sections of the regional cap rock.It shows that the sandstone to formation ratio on both sides of the fault is high,and the fault sand configuration has strong lateral ability of transporting oil and gas,which is conducive to the accumulation of oil and gas.Conversely,low sandstone to formation ratio is not conducive to hydrocarbon accumulation in the formation sand body.The better the coupling relationship between the dominant path of hydrocarbon transport between fault and sand body is,the more oil and gas are transported laterally in fault sand configuration,which is more favorable to hydrocarbon accumulation,otherwise,it is not conducive to oil and gas accumulation.The factors affecting the characteristics of lateral transport of oil and gas in fault sand configuration and their relationship with oil and gas accumulation are mainly shown in three aspects:1)The lateral transport of oil and gas in fault sand configuration is controlled by the regional cap rock sealing.2)The lateral transport of oil and gas in fault sand configuration is controlled by the relative value of the sandstone to formation ratio on both sides of the fault.3)The quantity of lateral hydrocarbon transport in fault sand configuration is controlled by the coupling relationship between the dominant hydrocarbon transport path of fault and sand body.

关 键 词：断砂配置 输导特征 控制因素 油气成藏 控制作用 

分 类 号：TE122.31[石油与天然气工程—油气勘探]