摘要
断陷湖盆陡坡带砂砾岩体沉积期次划分一直是影响砂砾岩体油藏勘探开发的一个难题。通过对东营凹陷盐家油田岩石相研究,识别出泥岩相、砂岩相及砾岩相3大类岩石相,并将其细分为10小类。利用小波变换分析技术,选择砂泥岩剖面的自然伽马(GR)曲线数据进行小波分析,实现砂砾岩体内等时地层对比;并建立了各级沉积界面的识别标准,识别出研究区从亚段、砂组到小层的三级沉积界面,并将盐家油田沙四上亚段统一划分为4个砂组、15个小层。
The depositional period of glutenite body in the rift lake was always a problem affected the exploration and development of the glutenite body reservoirs. By the division of lithic facies of Yanjia Oilfield in Dongying Depression,3 types of lithic facies of the mud facies,lithic facies,and conglomerate facies are identified,and it was subdivided into 10 subclasses. The analytic technique of wavelet transform was used to research the depositional stages of glutenite body in the region of the rift lake. Through analysis of well logging data in the researching area,GR curve and AC curve in mud profile were used to analyze wavelet,and the formation of glutenite body was matched. Based on the lithic facies and wavelet transform analyzed,recognition criteria of depositional interface of all levels are founded,3 type of depositional interface from the submember,sandstone group,to sublayer is identified,and 4 sandstone groups and 15 sublayers are divided from the 4th member of Shahejie Formation.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第5期45-49,共5页
Journal of Oil and Gas Technology
基金
国家"863"计划项目(2007AA060500)
关键词
盐家油田
砂砾岩体
沉积期次
岩石相
小波变换
Yanjia Oilfield
Glutenite body
Depositional period
lithic facies
wavelet transform
