摘要
分析了吐孜洛克构造逆掩断裂发育特征和活动特征 ,阐述了同时考虑断裂带填充物质的性质、断面压力和膏泥岩变形特征的断裂封闭性评价方法 ;应用该方法评价了主要穿盐断裂的封闭性 ,评价结果为它们在现今多是封闭的 .在此基础上恢复了穿盐断裂封闭性演化史 ,结果表明 ,吐孜洛克局部构造上发育的穿盐断裂自形成后在各个时期均活动 ,但这种活动并不是持续性的 ,而是间歇性的 ,活动时期断裂开启 ,为油气运移的有利通道 ,静止后很快封闭 ,成为油气聚集的遮挡物 。
Based on the analysis of overthrust development characteristic and its movement characteristic in Tuziluoke structure, we evaluated the cross-salt fault sealing ability in Tuziluoke structure utilizing the fault sealing ability evaluation method, considering the property of fault zone filler, fault pressure, and shale deformation characteristic. The result shows that most cross-salt faults are now sealing. Based on these, we reversed the cross-salt sealing ability history, the result is that after the cross-salt fault in Tuziluoke structure partial structures have been formed, they have moved in every period. But this kind of activity is not continuous. It is periodic. In its active period, the fault is open and it is the favorable passage for hydrocarbon movement. In stasis period, the fault is soon sealed and it is the sealing material. This is one of the reasons that natural gas still exist in Tuziluoke depression.
出处
《大庆石油学院学报》
CAS
北大核心
2004年第2期4-7,共4页
Journal of Daqing Petroleum Institute
基金
黑龙江省自然科学基金资助项目 (E0 12 9)
关键词
吐孜洛克构造
穿盐断裂
垂向封闭性
演化特征
天然气
Tuziluoke structure
cross-salt fault
vertical sealing ability
evolution character
natural gas
