薄窄砂体地震跟踪预测方法  

Seismic Prediction Reservoir by Tracking Thin and Narrow Sand

作　　者：秦月霜[1] 陈友福[1] 叶萍[1] 

机构地区：[1]中国石油大庆油田公司勘探开发研究院,黑龙江大庆163712

出　　处：《吉林大学学报（地球科学版）》2012年第1期269-274,共6页Journal of Jilin University：Earth Science Edition

基　　金：中石油科技攻关项目(03012)

摘　　要：大庆长垣西部地区葡萄花油层主要发育水下分流河道和小片席状砂,砂体厚度1～3m,横向变化快,分布零散,地震储层预测精度受到限制,给油藏评价和开发带来较大风险。为了提高薄窄砂体预测精度,以古龙油田为例,提出了分步逐级井震联合反演方法:以岩石物理响应特征分析为基础,优选反演方法,优化流程参数,不断增加滚动井数,通过5批161口开发井的优选及调整,砂体预测精度不断提高,确保了该油田初步开发方案实施效果,形成了可以推广应用的滚动预测跟踪调整的工作流程。The subsea channel sand and sheet sand,in the west of Daqing placanticline,play the most important role in the oil layer of Putaohua.The sand reservoir has the characteristic of chare distribution,1-3 m thick,which varies fast horizontally.So the prediction of sand reservoir by seismic has a limit of resolution.Therefore the reservoir evaluation and development has a risk of uncertainty.In order to improve the prediction accuracy of thin narrow sand body,taking Gulong oilfield as an example,we created the stepwise well-seismic joint tracking inversion.The method is based on petrophysical response characteristic analysis,optimizing inversion method and parameters.Continuously increasing rolling well numbers,by optimizing and adjusting five batches 161 development wells,the prediction accuracy of sand body is increased continuously,which ensures the effect of preliminary development plan of the oilfield.A set of rolling prediction and adjusting workflow is developed,which can be popularized and applied.

关 键 词：砂泥岩薄互层 地震响应 储层预测 方案实施 

分 类 号：P631.4[天文地球—地质矿产勘探]