缝洞型油藏储集空间类型对油井含水率影响的实验研究  

Experimental study on effect of reservoir space types on water cut of wells in karstic-fractured carbonate reservoir

作　　者：刘中春[1] 李江龙[1] 吕成远[1] 谭中良[1] 骆铭[1] 

机构地区：[1]中国石化石油勘探开发研究院,北京100083

出　　处：《石油学报》2009年第2期271-274,共4页Acta Petrolei Sinica

基　　金：中国石油化工股份有限公司科技开发项目(P03093)"塔河油田四区碳酸盐岩缝洞型油藏流动机理研究"资助

摘　　要：根据流体动力学相似理论,建立了不同类型储集空间的室内物理模型,利用物理模拟方法,研究了底水锥进的机理及其对油井含水率的影响,探讨了缝洞型油藏残余油存在的主要形式。物理模型包括洞、缝洞及缝3种,其中洞模型是可视化模型,通过记录一定时间间隔的水锥图像,分析水锥产生的机理及发展规律。另外两种为充填式的,通过碳酸盐岩岩屑及不同尺度玻璃管模拟缝洞储集空间。实验过程中,用低压传感器测量模型中流体流动的压力变化,用部分自动收集器计量流体流量及含水率的变化。According to the characteristic space of karstic-fractured carbonate reservoir and the similarity theory of hydrokinetics, the physical laboratory models for different reservoir space were constructed and used to study the coning mechanism of bottom water flowing in the different flow conduits and its effect on well water cut. The existence style of residual oil in karstic-fractured reservoirs was investigated. The physical models of reservoir space include three types of cave, fracture-cave and fracture. The experiments were implemented on the visual cave model for observation of water coning process. The digital images at specific time intervals were recorded. The other two models were filled with carbonate rock fragments and glass pipes to simulate the reservoir spaces. The lowpressure sensors were used to measure the pressure gradients of fluid flow process in the models. A partial auto-collecting vessel was used to measure fluid flow rate and water cut.

关 键 词：缝洞型碳酸盐岩油藏 储集空间 物理模拟模型 底水水锥机理 油井含水率 实验研究 

分 类 号：TE112.2[石油与天然气工程—油气勘探]