综合常规与核磁共振测井资料评价储层产液性质  

Producibility Prediction in Reservoir Through Integration of NMR and Conventional Log Data

作　　者：张恒荣 何胜林 曾少军 张海荣 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057

出　　处：《测井技术》2014年第5期574-580,共7页Well Logging Technology

基　　金：国家科技重大专项近海大中型油气田形成条件及勘探技术(2011ZX05023-004)

摘　　要：在一定的压差条件下,储层的产液性质及各相流体的产量主要取决于各自的相对渗透率和流体黏度。提出一套新的动静态参数结合的产液性质研究思路,利用常规密度、电阻率测井与核磁共振测井资料,得到储层的束缚水、残余烃与可动水体积,再结合核磁共振T2谱转换的伪毛细管压力曲线一起建立相渗模型,计算出含水率以及流量剖面。该方法能够提供油气井开采初期整个射孔层段的烃类产量和出水量比值。预测的结果与后续的测试吻合精度高,有助于完井决策,提供今后产量变化油藏模拟所必须的参数。Formation fluid property is mainly determined by the flow ability of the oil, gas and water in the pores, it could be described by multiphase flow equation. Under certain differential pressure conditions, the reservoir fluid property and phase fluid production depend on their relative permeability and fluid viscosity. Evaluating formation fluid property has traditionally centered on calculations of porosity and water saturation which are static parameters. An interpretation workflow is investigated combining with static and dynamic parameters which integrates resistivity, NMR, and porosity log data to obtain irreducible water, residual hydrocarbon and movable water volume of reservoir. And then, we integrate in false capillary pressure curves transformed by NMR T2 spectrum to establish phase permeability model. Last, we calculate water cut rate and flow profile. The new method enhances traditional formation evaluation to predict hydrocarbon and water production percentages throughout the entire logged interval for the initial production of the well. Comparing later logging data or cased-hole production logging data with result predicted, the effectiveness and influence factor can be evaluated. It also provides the parameters needed for reservoir simulation of the future production of the well.

关 键 词：测井评价 核磁共振 束缚水 可动水 毛细管压力 相渗曲线 含水率 流量剖面 产液性质 

分 类 号：P631.84[天文地球—地质矿产勘探]