摘要
运用沉积体系分析和旋回地层学的理论 ,对东营凹陷利津断裂带沙四段、沙三段复杂砂砾岩扇体进行垂向期次划分和对比 ,在此基础上 ,利用三维地震水平切片研究砂砾岩扇体的发育规律 ,并预测可能发育的有利扇体分布。研究结果 ,砂砾岩扇体主要发育于断陷阶段的缓慢沉降末期和加速沉降初期 ,扇体发育程度与生长断裂活动强度密切相关 ,主要含油相带是扇三角洲平原辫状水道 ,最有利的含油部位是辫状水道与扇三角洲前缘交界处。L3 72井和L5 61井钻遇的扇体是基本同期发育的单个扇体 ,L5 4井、L85井和L3 71井钻遇的是不同时期继承性发育的复合扇体。
On the basis of depositional system analysis and the theory of cyclic stratigraphy, glutenitefan bodies of Es 4 and Es 3 of Lijin fault belt in Jiyang depression were subdivided and correlated, and using the technology of three dimensional seismic horizontal slices, the development patterns of the glutenite bodies were studied and potentially well developed glutenite fan bodies were predicted. The results of studies indicated that glutenite fan bodies were mainly developed at the end of slow setting and the initial stage of fast setting in faulted period. Development degree of fan bodies is closely related to the active intensity of growth fault movement. Main oil beaering zone is braided channel of fan delta plain and favorable oil bearing position is at crossing point of braided channel and fan delta front. The fan bodies drilled by wells L371, L372 and L561 are basiclly individual fan bodies grown at the same period; and fan bodies drilled by wells L54, L85 and L371 are composite fan bodies grown continuously in different periods.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2002年第6期22-24,共3页
Petroleum Exploration and Development
关键词
砂砾岩扇体
地震水平切片
空间迁移
利津断裂带
glutenite body
seismic horizontal slice
spatial migration
Lijin fault belt
