徐深气田火山岩气藏密井网精细解剖与三维地质建模  

FINE ANATOMY AND 3D GEOLOGICAL MODEL FOR THE DENSE WELL PATTERN OF THE VOLCANIC GAS RESERVOIRS IN XUSHEN GASFIELD

作　　者：陈炳峰[1] 徐岩[1] 于海生[1] 刘春生[1] 曲立才[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2013年第1期65-70,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究发展计划（973）项目（2009CB219300）.

摘　　要：针对松辽盆地徐深气田火山岩气藏开发实际，为了实现经济有效开发，通过密井网精细解剖，分析了火山岩储层的多种影响因素，认为火山作用决定储集空间的分布与规模，后生改造作用决定火山岩能否成藏，火山作用和后生改造作用二者共同决定气藏的储量，高储渗体和裂缝的发育程度决定气井的产能。建立了徐深气田火山岩储层的岩石基质、高储渗体和裂缝的三元结构概念模型，通过VSP速度、叠加速度和声波速度的联合速度建模和井控、体控、震控的协同储层建模，降低了三维地质模型构造和储层预测的不确定性，为气藏开发提供了技术支持，在实际应用中效果显著。Abstract： In view of the reality of volcanic reservoir development in Xushen Gasfield of Songliao Basin, in order to achieve cost-effective development, the multiple influencing factors on the volcanic reservoir development are ana- lyzed with the help of the fine anatomy of dense well pattern. The study shows that the volcanism determines the AS distribution and its size ; the epigenetic reconstructing effects control of the formation of the gas reservoirs ; both ac- tions dominate the reserves of the reservoirs; the developed degrees of both high-porosity and high-permeability bodies and fractures constrain the productivity of the gas wells. The conceptual model of the ternary structures such as the rock matrix, the above bodies and fractures in the volcanic reservoirs in Xushen Gasfield is established. With the helps of the combined velocity modeling by VSP velocity, stacking velocity and acoustic velocity and moreover the accordant reservoir modeling among wells control, geologic bodies＂ control and seismic control, the prediction uncertainties of the structures and reservoirs of 3D geology model are decreased greatly. These achievements have provided a technical support for the development of the gas reservoirs and furthermore the remarkable effects have obtained in actual application.

关 键 词：松辽盆地 徐深气田 火山岩气藏 密井网 精细解剖 三维地质建模 

分 类 号：TE122.1[石油与天然气工程—油气勘探]