测井技术2017，Vol.41Issue(2)：199-204,6.DOI:10.16489/j.issn.1004-1338.2017.02.013
川西马井气田蓬莱镇组致密砂岩储层可动水饱和度计算方法
Calculation of Mobile Water Saturation in Tight Sandstone Reservoirs of Penglaizhen Formation,Western Sichuan Basin
司马立强 1王超 1吴丰 1王亮 1马力 2王紫娟3
作者信息
- 1. 西南石油大学地球科学与技术学院,四川 成都 610500
- 2. 中国石油川庆钻探工程有限公司 测井公司,重庆 400021
- 3. 西安昌源石油科技服务有限责任公司,陕西 西安 710076
- 折叠
摘要
Abstract
The gas field in Majing is located in the depression of the western Sichuan basin,its main production formation is Penglaizhen formation in Jurassic.The formation is mainly tight sandstone reservoirs which are of the characteristics such as complex lithology,complicated pore structure,low porosity and permeability.The parameters of rock electrical property experiment from the reservoirs show an obvious non-Archie phenomenon on account of their characteristics,so conventional Archie model can't calculate water saturation accurately.Meanwhile,the irreducible water saturations which are constructed in conventional sandstone reservoirs are less effective for the tight sandstone reservoirs with complicated pore structure.The result from the water saturation calculated by Archie model subtracting irreducible water saturations calculated by conventional irreducible water saturations model can't represent the mobile water saturation precisely.In this paper,combining rock electrical property experiments data on the basis of the analysis of the basic characteristics of the reservoirs,it's clear that the dual-porosity conducting volume model constructed on the complicated pore structure can better present the conducting law,and deduce the calculation model of mobile water saturation on the basis of the dual-porosity conducting volume model.We analyze all parameters of the model on the basis of rock electrical property experiments,irreducible water saturation of the NMR test and conventional logging data,and proposed a new method to calculate the irreducible water saturation which can convert to determine the micro-porosity.Practical examples show that the result of mobile water saturation calculation is consistent with water production characteristics of reservoirs,simultaneously it is a good result when the calculated mobile water saturations are used to distinguish the fluid mobility.关键词
测井解释/致密砂岩储层/双孔隙导电模型/可动水饱和度/束缚水饱和度/微孔孔隙度/川西/马井气田/蓬莱镇组Key words
log interpretation/tight sandstone reservoir/dual-porosity conducting volume model/mobile water saturation/irreducible water saturation/micro-pore porosity/the western Sichuan basin/majing gas field/Penglaizhen formation分类
天文与地球科学引用本文复制引用
司马立强,王超,吴丰,王亮,马力,王紫娟..川西马井气田蓬莱镇组致密砂岩储层可动水饱和度计算方法[J].测井技术,2017,41(2):199-204,6.
