大庆石油地质与开发2017，Vol.36Issue(5)：62-67,6.DOI:10.19597/J.ISSN.1000-3754.20170205
辽东湾坳陷X油田黏土矿物对注水开发储层物性的影响
INFLUENCES OF THE CLAY MINERALS ON THE WATERFLOODED RESERVOIR PHYSICAL PROPERTIES OF OILFIELD X IN LIAODONG BAY DEPRESSION
摘要
Abstract
In order to find out the change laws of the reservoir physical properties in the study area and provide the guide for the development of the oilfield water injection,taking the clay minerals of the delta front reservoir in Member E3d2L of Oilfield X in Liaodong Bay Depression as the researching object,with the help of the cast thin sheet,scanning electron microscope (SEM),X-ray diffraction and so on,by means of the contrasts of the volume fractions of the clay minerals,reservoir physical properties of different positions and watercut stages of the sealed coring wells,integrated with the palaeogeomorphology and sedimentary environments,the distribution laws and controlling factors of the clay minerals were analyzed in-depth,the influences of the clay minerals on the waterflooded reservoirs were explored.The researches show that the main clay minerals in the reservoir area are illite/smectite mixed layer and kaolinite with a small amount of the illite and chlorite;under the controls of two principal factors:palaeogeomorphology and sedimentary environments,the contents of the clay mineral change regularly,the palaeogeomorphology in the southern and western regions is rather lower,the buried depth of the reservoir is rather bigger,the mouth bar sandbodies in the subsurface distributary channels are well developed and mainly composed of the quartz sandstones,the content of the illite/smectite mixed layer is pretty higher,while the palaeogeomorphology in the northern and eastern regions uplifts a litter bit,the buried depth is pretty shallow,the sandbodies in the subsurface distributary channels are well developed and mainly composed of the feldspar sandbodies with the high content of the kaolinite;the reservoirs with the low content of the clay minerals are seriously waterflooded,the reservoirs with the high content of the clay mineral are just on the contrary;the physical properties of the reservoirs with the high content of the illite/smectite mixed layer are significantly reduced after waterflooded,while the properties of the reservoir with the high content of the kaolinite are obviously changed better.The research achievements provide a new idea for the characterization and description of the remained oil in the reservoir,and meanwhile provide the theoretical guidance for the optimization of the waterflooding measures and the adjustments of the developing program for the similar oilfields.关键词
辽东湾坳陷X油田/东二下段/三角洲前缘/黏土矿物/储层物性Key words
Oilfield X in Liaodong Bay Depression/Member E3d2L/delta front/clay mineral/reservoir physical property分类
能源科技引用本文复制引用
张雪芳,刘宗宾,刘超,刘欢,张瑞..辽东湾坳陷X油田黏土矿物对注水开发储层物性的影响[J].大庆石油地质与开发,2017,36(5):62-67,6.基金项目
国家科技重大专项“海上油田丛式井网整体加密及综合调整技术”(2011ZX05024). （2011ZX05024）
