盐城凹陷断层封闭性
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
盐城凹陷断裂发育,断层封闭性评价具有一定的难度。根据前人的研究方法,结合实际地质情况,选取典型断层——盘1断层、盐3断层,应用泥岩涂抹系数建立该区断层侧向封闭性的评价标准值为1.26,根据泥岩塑性变形及破裂所能承受的最大正压力建立断层垂向封闭性有效正压力,区间为10~22MPa.通过对盐城凹陷主要断层的封闭性进行综合评价发现,该区断穿基底——阜一段的断层封闭性具有明显的分区性特点:南部断层封闭性较好,北部断层封闭性差,封闭断层的特征各不相同,与实际地质情况相吻合。
Yancheng sag is characterized by developed faults, which has influenced the fault sealing evaluation. According to previous studies, integrated with real geologic conditions, Pan-1 and Yan-3 faults are taken as typical faults to develop the criterion for fault lateral sealing evaluation. Using the mud smear coefficient, the criterion is given by 1.26. According to the sustain maximum normal pressure of mud plastic distortion and cracking, the effective normal pressure of fault vertical sealing ranges from 10 MPa to 22 MPa. The study shows that the sealing of fault penetrating into the basement (Member Fu-1) in Yancheng sag is characterized by regions: the south area is better, the north area is worse, such a varied feature is accordant with the real geologic situation.
引文
[1]洪峰,宋岩,余辉龙,等.柴达木盆地北缘典型构造断层封闭性与天然气成藏[J].石油学报,2002,23(2):11-15.
    [2]吕延防,陈章明,陈发荣.非线性映射分析判断断层封闭性[J].石油学报,1996,16(2):36-41.
    [3]庞雄奇,付广,万龙贵,等.盖层封油气性综合定量评价[M].北京:地质出版社,1993:32-65.
    [4]刘东周,刘斌,李建英,等.生长断层封闭性分析[J].石油勘探与开发,2002,29(3):37-39.
    [5]刘琨,胡望水,陆建林.系统分析评价断层封闭能力的思路[J].石油勘探与开发,2004,31(2):87-89.
    [6]赵密福,李阳,李东旭.泥岩涂抹定量研究[J].石油学报,2005,26(1):60-64.
    [7]王东晔,查明,杨勇.运用模糊综合评判方法定量研究断层封闭性[J].断块油气田,2006,13(4):5-8.
    [8]李功权,曹代勇.断层封闭性的不确定性因素分析[J].石油天然气学报,2006,28(2):31-33.
    [9]杨智,何生,李奇艳,等.黏土涂抹充填方法评价断层封闭性研究[J].世界地质,2005,24(3):259-264.
    [10]Gibson R G.Fault-zone seals in siliciclastic strata of the Columbus basin offshore Trinidad[J].AAPG Bulletin,1995,78(9):1372-1385.
    [11]Yielding G,Freeman B,Needham D T.Quantitative fault seal prediction[J].AAPGBulletin,1997,81(6):897-917.
    [12]Smith D A.Theoretical consideration of sealing and nonsea-lingfaults[J].AAPGBulletin,1966,50(2):363-371.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心