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| 低孔隙度低渗透率泥质砂岩储层中胶结指数m和饱和度指数n的计算和应用 | |
| 引用本文： | 贾自力,陈文武,房育金,周红燕,公学成,沈金松.低孔隙度低渗透率泥质砂岩储层中胶结指数m和饱和度指数n的计算和应用[J].测井技术,2010,34(2):108-114. |
| 作者姓名： | 贾自力 陈文武 房育金 周红燕 公学成 沈金松 |
| 作者单位： | 1. 中国地质大学,北京,100083 2. 中国石油股份有限公司吐哈油田分公司鄯善采油厂,新疆,鄯善,838202 3. 中国石油大学,北京,102249 |
| 基金项目： | 中国石油天然气集团公司基础研究项目 |
| 摘 要： | 低孔隙度低渗透率储层的孔隙结构复杂,连通性较差,孔隙中流体分布不均匀,Archie公式中系数m、n的确定存在较大误差.由传统统计分析方法求取的m和n参数会随孔隙度和含水饱和度的不同变化,使测井电阻率计算的含油气饱和度精度降低.从数学物理边界条件和低孔隙度低渗透率储层的地质特征出发,分析了低孔隙度低渗透率储层中胶结指数m和饱和度指数n的变化特征.从储层岩石的地质作用和岩石物理变化过程探讨低孔隙度低渗透率储层中地层胶结指数m随孔隙度变化的一般规律,并用渗滤门限理论(PPTT)解释这一变化过程,建立了地层胶结指数m和饱和度指数n的准确计算方法.应用新参数对应的饱和度关系对QL油田不同水淹程度的2口井进行了处理解释,获得了良好的效果. |
| 关 键 词： | 测井解释 泥质砂岩 阿尔奇公式 含水饱和度 岩石电阻率 地层胶结指数 饱和度指数 |
Computation of the Formation Cementation Factor m and the Saturation Exponent n and Its Application to Shaly Sand Formation with Low Porosity and Low Permeability |
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| JIA Zili,CHEN Wenwu,FANG Yujin,ZHOU Hongyan,GONG Xuecheng,SHEN Jinsong.Computation of the Formation Cementation Factor m and the Saturation Exponent n and Its Application to Shaly Sand Formation with Low Porosity and Low Permeability[J].Well Logging Technology,2010,34(2):108-114. | |
| Authors: | JIA Zili CHEN Wenwu FANG Yujin ZHOU Hongyan GONG Xuecheng SHEN Jinsong |
| Affiliation: | JIA Zili1,CHEN Wenwu2,FANG Yujin2,ZHOU Hongyan2,GONG Xuecheng2,SHEN Jinsong3(1.China University of Geosciences,Beijing 100083,China,2.Tuha Oilfield Company,PetroChina,Shanshan,Xinjiang 838202,3.China University of Petroleum,Beijing 102249,China) |
| Abstract: | When the Archie equation is applied to computation of the water saturation in shaly sand formation with low porosity and low permeability,problems in accurate prediction of the cement factor m and the saturation exponent n are commonly encountered,because of the limited experimental conditions and the parameter distribution from which the Archie equation was derived.In fact,the Archie equation only accommodates the clean sand formation which holds medium to high porosity and the fluid in it must be homogene... |
| Keywords: | log interpretation shaly sand Archie equation water saturation rock resistivity formation cementation factor water saturation exponent |
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