论文部分内容阅读
油田开发进入中后期,含水率高,剩余油分布零散,油田稳产难度非常大。为进一步挖潜剩余油,预测井间砂体展布,掌握地下剩余油分布规律,迫切需要建立更为精确的地质模型。以垦西油田垦71断块密井网区为例,应用岩心、测井、地震及生产动态等多尺度资料,对河流相野外露头和现代沉积的原型模型进行分析,提出了点坝识别及精细解剖其内部构型的方法,确定了地下点坝垂向和平面上的识别标志。总结了点坝空间组合特征,应用经验公式、水平井及小井距资料确定了研究区侧积体和侧积层的规模及产状,在此基础上对研究区点坝内部构型进行解剖,最终建立了曲流河点坝三维构型模型。
Oilfield development into the late, high moisture content, residual oil scattered, oil production is very difficult to stabilize. In order to further tap the remaining oil, predict the distribution of sand bodies between wells, and grasp the distribution rule of remaining oil underground, it is urgent to establish a more accurate geological model. Taking the Kenitou zone of Ken 71 fault block in Kenxi oilfield as an example, this paper analyzes the prototype of the outcrop of river facies and the modern sediment by using multi-scale data such as core, well logging, earthquake and production dynamics, Finely dissecting the internal configuration of the method to determine the vertical and horizontal subsurface point of dam identification marks. The characteristics of spatial combination of point dam are summarized. The empirical formula, horizontal well and small well spacing data are used to determine the size and occurrence of lateral accumulated body and lateral accumulated layer. On the basis of this, the internal configuration of point dam in the study area is dissected, Finally, the three-dimensional configuration model of meandering point dam is established.