准噶尔盆地南缘古近系砂岩储层物性控制因素  

CONTROLLING FACTORS ON RESERVOIR PROPERTIES OF PALAEOGENE SANDSTONE IN THE SOUTH MARGIN OF JUNGGAR BASIN

作　　者：崔杰[1,2] 张立强[1] 

机构地区：[1]中国石油大学地球资源与信息学院,山东东营257061 [2]胜利油田钻井工艺研究院,山东东营257017

出　　处：《大庆石油地质与开发》2010年第6期44-49,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：国家“863”计划项目“超深井钻井地质参数定量探测与三维描述技术”（2006AA06A109）资助.

摘　　要：通过对准噶尔盆地南缘古近系碎屑岩储层物性分布特征进行分析，阐述了砂岩储集层物性的影响因素。研究表明，古近系碎屑岩储层物性分布在横向上受砂体沉积相带控制，滩坝及三角洲分流河道砂体孔渗性较好；在纵向上受次生孔隙发育带控制，砂岩的次生孔隙发育带与有利的沉积相带、成岩作用和异常高压带的发育有关。压实作用与方解石、黏土矿物等胶结作用是储层物性变差的重要因素，酸性水的溶解作用能够产生大量次生孔隙，异常高压带的发育有利于次生孔隙的形成和保存。准噶尔盆地南缘霍玛吐构造带安集海组下部滨浅湖滩坝和紫泥泉子组三角洲分流河道砂体，储层物性好，是有利的勘探区带。Through the analysis of the distribution characteristics of the physical properties in Palaeogene clastic reservoirs of the south margin of Junggar Basin, this paper states the influencing factors on the properties of above sandstone reservoirs. The study shows that the distribution is controlled by sedimentary belt horizontally; the porosity-permeability properties of the coastal bars and delta distributary river channels are pretty better ; hut vertically, it is controlled by the secondary well-developed pore belt, and moreover the belt is related to favorite sedimentary facies belts, diagenesis and highly abnormal pressure. Compaction and the cementations of calcites, clays and so on are the important factors of making physical properties worse ; the solution of acid water can generate a large number of secondary pores, and the development of belts with abnormally high pressure is favorable to the formation and reservation of secondary pores. The distributary channel sandbodies in the delta of shallow coastal lake bars in Lower Anjihai and Ziniquanzi Formations are much better in physical properties in the south margin （i. e. Huomatu Structural Belt） of Junggar Basin and become favorable plays.

关 键 词：储层特征 异常高压 古近系 准噶尔盆地 

分 类 号：TE121[石油与天然气工程—油气勘探]