三维地质建模技术在磨溪雷一~1气藏中的应用

Application of 3Dgeological modeling technology in Lei-11reservoir of Moxi gas field

川中磨溪气田雷一1气藏已进入开发中后期,存在储量、压力分布不均匀等问题,为弄清剩余储量分布特征、动用西端低渗储量、确保水平井合理部署及钻遇率、提高气藏最终采收率,就必须开展储层精细描述,落实储层、物性在三维空间的分布状态。在精细地质综合研究基础上,应用Petrel建立了气藏三维精细构造模型和属性模型,对模拟前后参数分布特征及储量进行计算和分析,并对水平井储层钻遇率及生产效果关系进行了剖析,验证了模型的可靠性,为分析和评价气藏提供了依据。

Lei-11 reservoir of Moxi gas field in Chuanzhong has entered in the mid-late period of field development , with the problems of uneven distribution of reserves and pressure. In order to make clear the distribution characteristics of remaining reserves , to produce low permeability reserves in the west , to ensure reasonable deployment of horizontal wells and drilling rate , and enhance the ultimate recovery , the research on reservoir fine description , reservoir and physical properties distribution in 3D space must be carried out.On the basis of comprehensive study of fine geology , by the use of Petrel software , 3D fine structural model and property model have been established.Through parameter distribution and reserves calculation analysis before and after the simulation , the effect on reservoir horizontal well drilling rate and production relations has been analyzed and the model reliability has been verified , which provides guidance for gas reservoir analysis and evaluation.