松辽盆地徐深气田营城组火山岩储层三维地质建模技术

3D geologic modeling technology for the volcanic reservoir of Yingcheng Formation in the Xushen Gasfield,Songliao Basin

针对徐深气田投产的开发井产能较低、低效井较多、成本高、储量动用程度低和经济效益较差的实际,本文提出了地震、地质和测井等多学科综合精细地质建模技术研究的新思路,通过精细建立地震速度模型、构造模型、古地貌模型、火山岩相模型、储层参数随机预测模型、储层发育概率预测模型和裂缝模型等优选储层发育的有利部位,优化设计了6口水平井,初步形成一套深层火山岩气藏三维地质建模技术。研究成果在SS-H1井、XS1-H1井和XS1-H2井随钻地质导向中发挥了重要作用,取得了比较好的实际应用效果。

To solve the problems of relatively low productivity, low efficiency and high cost, low degree of producing reserves and poor economic benefit of the development wells in the Xushen Gasfield,a muhidisciplinary refined modeling technology was presented in the paper. All the given data were synthetically and effectively used,including seismicity, geology,logging and so on. Based on refined models for seismic velocity,structural deformation,palaeogeomorphology, volcanic facies, stochastic prognosis of reservoir parameters, probability prognosis of reservoir and fractures,the favorable belts of reservoir were optimized, and where 6 horizontal wells were designed. The 3D geologic modeling technology of volcanic gas reservoir in deep layers was initially formed and its result played an important role in real time geo-steering of the wells SS- H1 ,XS1-H1 and XS1-H2 with fair application effect.