致密砂岩“甜点”预测及在井位部署中的应用  

Tight Sandstone“Sweet Spot”Prediction and Its Application in Well Deployment

作　　者：张昊 张军林 胡云亭 万欢 逄建东 石雪峰 周龙刚 ZHANG Hao;ZHANG Junlin;HU Yunting;WAN Huan;PANG Jiandong;SHI Xuefeng;ZHOU Longgang(Engineering Technology Branch,CNOOC Energy Tech-Drilling & Production Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《科技和产业》2022年第1期262-268,共7页Science Technology and Industry

基　　金：中国海洋石油总公司重大科技专项(CNOOC-KJ 135KJXM NFGJ2016-05)。

摘　　要：致密砂岩油气藏是目前非常规油气勘探开发研究的重点和难点,对其“甜点”的有效识别影响了勘探开发策略和井位的部署。致密砂岩储层岩性致密、横向变化快且厚度较薄,只用纵波阻抗对致密砂岩储层和含气砂岩难以识别。针对以上特点,以岩石物理分析为基础,综合约束稀疏脉冲反演和地质统计学反演进行储层预测,利用AVO流体检测技术和纵横波速度比(V_(p)/V_(s))刻画含气砂岩的分布范围,开展致密砂岩储层识别及储层含气性预测,提高优质砂岩的识别及预测精度,并在鄂尔多斯盆地F区块太原组井位部署中进行应用,取得了良好的实际效果,具有推广价值和可操作性。Tight sandstone reservoirs are currently the focus and difficulty of unconventional oil and gas exploration and development.The effective description of the“sweet spot”of tight sandstone affects exploration and development strategies and well placement deployment.Tight sandstone reservoirs have tight lithology,rapid lateral changes and thin thickness.It is difficult to identify tight sandstone reservoirs and effective reservoirs only by P-wave impedance.In view of the above characteristics,based on petrophysical analysis,comprehensively restrict sparse pulse inversion and geostatistical inversion for reservoir prediction,AVO fluid detection technology and P/S wave velocity ratio(V_(p)/V_(s))was used to describe effective reservoirs Distribution range.Research on tight sandstone reservoir identification and gas-bearing prediction methods was carried out,which improved effective reservoir identification and prediction accuracy,and applied it in the well location deployment of Taiyuan Formation in Block F of the Ordos Basin,achieving good practical results and having promotion value and operability.

关 键 词：致密砂岩 “甜点”预测 地震反演 AVO流体预测 井位部署 

分 类 号：P631.4[天文地球—地质矿产勘探]