摘要
东营凹陷八面河西南段正断层发育。通过断裂活动性分析,明确了研究区与成藏期匹配的断裂分布及活动强度。开展面138井区部分断裂的输导能力定量评价,计算断裂启闭系数。计算表明研究区断裂的启闭性与泥岩涂抹因子密切相关,泥岩流体压力和断面正应力的影响力相对较小,因此可将断裂启闭系数计算公式简化为与泥岩涂抹因子的一个乘幂式。借鉴前人成果,建立研究区启闭系数与连通概率的关系式。据此关系式可计算各断层不同断点的连通概率,在断面空间上展开,分析断面上连通概率高值与低值区的分布,进而判断油气的优势运移通道。
A lot of normal faults developed in Bamianhe southwest of Dongying Sag.Based on the analysis of fault activity,the distribution and activity intensity of the faults matching with reservoiring period were made clear in the study area.In well-138 area,quantitative evaluation of transporting ability of part of faults,and calculation of fault sealing coefficient show that the fault sealing coefficient and clay smear factor closely related each other.The influence of fluid pressure of mudstone and normal stress on fault plane is relatively small.So the fault sealing coefficient calculation formula is simplified as a power type with shale smear factor.Based on the previous studies,the formula is set up between fault sealing coefficient and connectivity probability in the area.The connectivity probability calculation of different breakpoint on fault can be calculated using the formula.Calculation of different faults plane for the analysis of the distribution of connectivity probability of high value and low value area can be used to determine the dominant migration pathway of the oil and gas.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2014年第S1期39-45,共7页
Natural Gas Geoscience
基金
中国石化股份科技攻关项目"输导体系及输导能力量化研究"(编号:P08037)资助
关键词
八面河
断裂活动性
启闭系数
输导能力
Bamianhe
Fault activity
Sealing coefficient
Transporting ability
