致密沉凝灰岩储层特征及储层伤害评价——以三塘湖盆地马56块条湖组为例  

Characteristics and damage evaluation of tight sedimentary tuff reservoir: a case study of Tiaohu formation of Ma 56 block in Santanghu basin

作　　者：张金发 管英柱 李亭[1,2] 徐摩[3] 陈菊 董为民 ZHANG Jinfa;GUAN Yingzhu;LI Ting;XU Mo;CHEN Ju;DONG Weimin(School of Petroleum Engineering,Yangtze University,Wuhan 430100,China;Hubei Key Laboratory of Drilling and Production Engineering for Oil and Gas(Yangtze University),Wuhan 430100,China;Department of Development,PetroChina Tuha Oilfield Company,Hami,Xinjiang 839000,China)

机构地区：[1]长江大学石油工程学院,武汉430100 [2]油气钻采工程湖北省重点实验室(长江大学),武汉430100 [3]中国石油吐哈油田分公司开发事业部,新疆哈密839000

出　　处：《中国科技论文》2022年第9期1027-1034,1056,共9页China Sciencepaper

基　　金：油气资源与探测国家重点实验室开放课题资助项目(PRP/open-1901)。

摘　　要：为了识别注入流体对致密沉凝灰岩储层的伤害情况,以马56块沉凝灰岩储层为例,采用X射线衍射(X-ray diffraction, XRD)、扫描电子显微镜(scanning electron microscope, SEM)、气测孔渗等方法分析储层基本特征,开展储层伤害实验,评价储层伤害类型及损害机理,并提出储层保护措施。储层基本特征分析结果表明:储层岩石类型以火山碎屑岩为主,黏土矿物以高岭石和蒙脱石为主,属于中黏土矿物储层;储层物性表现中高孔特低渗,原油为中质原油,油藏为正常地层压力的未饱和油藏。储层伤害实验结果表明:储层具有强应力敏、中等偏强盐敏、中等偏弱速敏和水敏、弱碱敏、负伤害酸敏及中等偏弱水锁。油田后续注水开发应控制生产压差、注入流体矿化度和流速,可添加黏土稳定剂和解水锁剂。In order to identify the damage of injected fluid to the tight sedimentary tuff reservoir, taking the sedimentary tuff reservoir of Ma 56 block as an example, the basic characteristics of the reservoir were obtained by X-ray diffraction(XRD), scanning electron microscope(SEM), gas porosity and permeability measurement. The reservoir damage types and damage mechanism were evaluated by reservoir damage experiments, and the reservoir protection measures were put forward. The basic characteristics of the reservoir show that the reservoir rock types are mainly volcanic clastic rocks, and the clay minerals are mainly kaolinite and montmorillonite, belonging to the medium clay mineral reservoir. In addition, the reservoir physical properties are medium-high porosity and ultra-low permeability, and the crude oil is medium crude oil, and the reservoir is an unsaturated reservoir with normal formation pressure. Reservoir damage experiments show that the reservoir has strong stress sensitivity, medium strong salt sensitivity, medium weak flow velocity sensitivity, medium weak water sensitivity, weak alkali sensitivity, negative damage acid sensitivity and medium weak water block damage. The follow-up water injection development of oilfield should control the production pressure difference, the salinity and flow velocity of injected fluid, and the clay stabilizer and water locking removing agent can be added.

关 键 词：三塘湖盆地 致密油 沉凝灰岩 储层敏感性 水锁伤害 储层保护 

分 类 号：TE258[石油与天然气工程—油气井工程]