埕岛油田勘探实践与认识

Practice and knowledge of exploration on Chengdao oil field.

埕岛油田位于山东省东营市以北的浅海海域 ,是具有 7套含油层系、十余种油藏类型、4种流体性质的大型复式油气聚集区。针对 3套目的层系石油地质特征和海上勘探高投入、高风险的特点 ,采用不同三维地震储集层描述技术 :采用测井约束反演技术描述馆陶组河道砂储集层 ;采用地层基准面原理和基准面旋回对比技术预测东营组和沙一段的水下扇体储集层分布 ;采用合成声波测井等技术完成全区太古界、下古生界的储集层横向描述和预测。 1984年至 1999年 ,按选带、控层、逐层深入的思路进行勘探 ,探井部署中采用多参数、神经网络等储集层描述和油气检测技术 ,缩短了勘探开发进程 ,取得了较好的经济效益 ,每口井平均探明储量 560× 10 4 t。图 3参 2 (王孝陵摘 )

Chengdao oil field is located at the shallow sea area to the north of Dongying, Shandong, which is a giant composite oil (gas) accumulation of which there are seven sets of oil bearing strata, more than ten types of reservoirs, and four kinds of fluid property. In view of petroleum geological feature of three sets of oil bearing strata and high investment and risk in the exploration of Chengdao oil field, 3D seismic survey and well logging constrained inversion technologies were used for describing fluvial channel sandstone reservoirs of Guantao Formation; stratigraphic datum principle and datum cyclic bedding correlation techniques were used for predicting the distribution of subaqueous fan shaped reservoirs of Dongying Formation and Member S 1; and synthetic acoustic log and other techniques were used for describing and predicting the lateral extent of Archaeozoic and Lower Paleozoic oil bearing reservoirs in the whole oil field. In 1984 and 1999, three ideas such as zone choosing,beds controlling and exploration expanding gradually were adopted in the exploration,and a number of methods for describing reservoir and detecting oil/gas such as multi parameter, neural network, etc. were adopted in planning exploratory wells,therefore,the periods of exploration and development were shortened and a large economic benefit was obtained.The average proved OOIP per well amount to 560×10 4t.