伊朗Yadavaran油田储层保护技术研究  

The Researching on Iran Yadavaran Oilfield Reservoir Protection Technology

作　　者：王松[1] 王浩任[2] 

机构地区：[1]长江大学化工学院,荆州434023 [2]中国石化集团德州大陆架公司,德州253000

出　　处：《科学技术与工程》2016年第21期206-210,共5页Science Technology and Engineering

基　　金：国家重大专项项目(2008ZX05031-003)资助

摘　　要：Yadavaran油田在纵向上发育三套含油层位,沉积类型为浅海碳酸盐岩沉积,主要储层类型为白垩质灰岩。储层储集空间以孔、洞为主,其次是粒间孔、裂缝、晶间孔,储层储集空间类型为孔隙、裂缝型。从测试结果看,孔隙度9.44%-10.06%,渗透率（2.29-8.45）×10^-3μm^2。敏感性实验研究结果表明,储层岩样的地层水速敏为弱-中等,临界流速为0.3m L/min左右;煤油速敏程度总体为弱-中等,临界流速为0.5-1.5 m L/min;水敏、盐敏和碱敏均为弱-中等程度;HCl酸敏损害程度总体为中等,HF酸敏损害程度总体为中等;应力敏感性为中偏弱到中等.针对该区块目前使用的钻井液体系对储层的损害情况,选用聚磺钻井液的基础上加入合适的暂堵剂,研制了一套保护该区块的钻井液体系,室内实验结果表明,新研制的钻井液污染岩心后返排渗透率恢复值达到90%以上,现场应用效果显著。In the longitudinal, there are three parts of oil horizon in the Yadavaran oilfield. Its sedimentation type is shallow sea carbonate sedimentary and the main reservoir type is chalkiness limestone. Hole is the main res-ervoir pore space and the second is intergranular pore, fracture, intergranular hole. Types of reservoir pore space are pore and crack. The text results show the porosity is 9. 44% ~ 10. 06% and the permeability is （2.29-8.45）×10^-3μm^2.Results of sensitivity text show： The formation water velocity sensitive of reservoir rock sample is weak-medium and its critical flow rate is about 0？ 3 mL/min; The degree of kerosene velocity sensitivity is overall weak-medium and its critical flow rate is 0？ 5 ？1. 5 m L / m i n ; Water sensitivity,salt sensitivity and alkali sensitivity are weak-moderate; T he sensitive damage degree of HC1 and HF acid is generally medium; T he stress sensitivity is weak to moderate. According to the current block the use of drilling fluid system of reservoir damage situation, in poly sulfonated drilling fluid on the basis of the right was Choosed to the temporary plugging agent and developed a set of drilling fluid system, protecting this block. Indoor experimental results show that, the new development of drilling fluid backflow pollution after the core permeability recovery value above 90% , The field application effect is obvious.[

关 键 词：钻井液 储层保护 暂堵剂 敏感性 

分 类 号：TE254.3[石油与天然气工程—油气井工程]