柴达木盆地M区砂岩气藏储层地质建模分析

Reservoir Geological Modeling Analysis of Sandstone Gas Reservoir in M Zone of Qaidam Basin

为表征M区储层在三维空间的展布特征,指导新井部署,确保天然气科学合理高效地开发,通过三维地质建模平台,采用确定性建模和随机建模相结合,地震解释和地层划分与对比相融合,“岩相模型相控、流体模型相制”的方法,研究M区砂体展布、流体分布及接触关系。结果表明,运用该方法指导建立的三维地质模型在储量核算时能够充分匹配实际生产动态,便于剩余气分布规律研究,有效指导天然气高效开发,提高砂体控制程度。这种方法对于砂岩气藏储层较为适用。

The sand body distribution,fluid distribution and contact relationship in M zone were studied to characterize the distribution characteristics of M-zone reservoirs in three-dimensional space,guide the deployment of new wells and ensure the scientific and rational development of natural gas.The study was carried out through the three-dimensional geological modeling platform,the combination of deterministic modeling and stochastic modeling,the comparison of seismic interpretation to stratigraphic division,and the method of“phase control of rock facies model and fluid model phasemaking”.Results show that the 3D geological model guided by this method can fully match the actual production dynamics during the reserve calculation and facilitate the study of the residual gas distribution law.It can effectively guide the efficient development of natural gas and improve the control degree of sand body.This method is applicable to sandstone gas reservoirs layer.