准噶尔盆地阜东斜坡韭菜园子组储集层特征及敏感性  

Characteristics and Reservoir Sensitivity of Jiucaiyuanzi Formation in Fudong Slope,Junggar Basin

作　　者：王剑 马聪 罗正江 吕剑 李二庭 张宝真 刘翠敏 WANG Jian;MA Cong;LUO Zhengjiang;LYU Jian;LI Erting;ZHANG Baozhen;LIU Cuimin(Key Laboratory for Exploration and Development of Conglomerate Reservoir,PetroChina,Karamay,Xinjiang 834000,China;Xinjiang Key Laboratory for Conglomerate Reservoir,Karamay,Xinjiang 834000,China;PetroChina Xinjiang Oilfield Company,Reaearch Institute of Experiment and Detection,Karamay,Xinjiang 834000,China;PetroChina Xinjiang Oilfield Company,Development Company,Karamay,Xinjiang 834000,China;PetroChina Xinjiang Oilfield Company,Fengcheng Oilfield Operation District,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油砾岩油气藏勘探开发重点实验室,新疆克拉玛依834000 [2]新疆维吾尔自治区砾岩油藏重点实验室,新疆克拉玛依834000 [3]中国石油新疆油田分公司实验检测研究院,新疆克拉玛依834000 [4]中国石油新疆油田分公司开发公司,新疆克拉玛依834000 [5]中国石油新疆油田分公司风城油田作业区,新疆克拉玛依834000

出　　处：《新疆石油地质》2021年第1期38-45,共8页Xinjiang Petroleum Geology

基　　金：国家科技重大专项(2017ZX05008);中国石油科技重大专项(2017E-0401)。

摘　　要：为确定准噶尔盆地阜东斜坡下三叠统韭菜园子组储集层敏感性特征及敏感程度,及时调整压裂工艺及注采开发措施,在剖析储集层岩性、储集空间、孔隙结构、物性等特征的基础上,结合扫描电镜、X射线衍射全岩矿物组成等分析资料,系统评价了研究区韭菜园子组砂砾岩储集层敏感性及其影响因素。研究表明,阜东斜坡韭菜园子组储集层的酸敏性最强,盐敏性为中等偏强,水敏性和速敏性整体上属于中等偏弱。黏土矿物的发育部位和产状,是决定储集层敏感性程度的关键因素。粒间充填的丝状、絮状伊蒙混层是产生水敏的主要原因,同时,水敏性和速敏性还受丝带状伊利石的影响;盐敏的形成则源于蠕虫状高岭石;而研究区储集层填隙物中富含沸石、方解石胶结物及栉壳状和叶片状绿泥石,则是导致强酸敏的主要原因。引入静态浸泡实验,建立动静态一体敏感性评价方法,有效解决了因胶结疏松、膨胀性强及岩性致密难以获取敏感性评价参数的问题,能够更加直观地反映储集层敏感性机理,为同类储集层敏感性评价提供了新的思路。In order to investigate the characteristics and degree of reservoir sensitivity of the lower Triassic Jiucaiyuanzi formation in the Fudong slope of Junggar basin,the fracturing technology and injection⁃production development measures have been timely updated.The sensitivity of the conglomerate reservoirs in the Jiucaiyuanzi formation and its controlling factors on the sensitivity were systematically eval⁃uated based on the analysis of reservoir lithology,reservoir space,pore structure and physical properties,and the data of SEM and whole⁃rock X⁃ray diffraction in the study area.The studies show that acid sensitivity of the reservoir is the strongest,followed by medium⁃strong salinity sensitivity,and the last are water sensitivity and velocity sensitivity,generally medium to weak.The location and occurrence of clay minerals are key factors that determine the reservoir sensitivity.Filamentous and flocculent illite/smectite formation among grains is the pri⁃mary cause for water sensitivity.Meanwhile,water sensitivity and velocity sensitivity are also affected by filamentous illite.The salinity sen⁃sitivity is mainly caused by worm⁃like kaolinite.Furthermore,interstitial fillings rich in zeolite,calcite cements and comb⁃shaped and leaf⁃shaped chlorite are the main reasons resulting in the strong acid sensitivity in the study area.The integrated sensitivity evaluation method of dynamic flow and static immersion established through static immersion comparative experiments is introduced,which can eliminate the difficulty in obtaining sensitivity evaluating parameters due to loose cementation,strong expansion and dense lithology.This method can re⁃flect the sensitivity mechanism of the reservoir more intuitively,and provides a new way for sensitivity evaluation of similar reservoirs.

关 键 词：准噶尔盆地 阜东斜坡 韭菜园子组 储集层特征 敏感性 微观特征 黏土矿物 流动性实验 静态浸泡实验 

分 类 号：TE112.23[石油与天然气工程—油气勘探]