中国石油大学学报（自然科学版）2012，Vol.36Issue(3)：69-75,7.DOI:10.3969/j.issn.1673-5005.2012.03.011
塔南凝灰质火山碎屑岩储层岩石物理试验研究
Petrophysical experimental research in Tanan tuffaceous pyroclastic rock reservoir
摘要
Abstract
Under the condition of simulated formation temperature and pressure, the compression and shear wave velocity of the tuffaceous conglomerates and rock-fragment sandstones of the reservoirs in Kit, Kin group of Cretaeeous system in Tanan were measured. The effects of lithology, mineral content, cementation type and particle contact mode, density, porosity, shale content, and water saturation on the acoustic velocity of the tuffaceous pyroclastic rock were studied. Within the observation limits, some rules are found: ①The acoustic velocity of the fine tuffaceous conglomerates is remarkably greater than that of the tuffaceous rock-fragment sandstones with good physical property. ②The acoustic velocity increases with fragment content increasing, and decreases with quartz and feldspar content increasing. ③In the same porosity, the velocity of porous cementation and lineal contact rock is the biggest, the velocity of basal cementation and matrix-suppot-point contact rock is the smallest and the compression velocity is more sensitive to the cementation type and particle contact mode than shear wave velocity. ④The acoustic velocity increases with density increasing, and the velocity of luffaceous rock-fragment sandstones keeps a good relation with density in form of power function. The acoustic velocity decreases with porosity and shale content increasing, the velocity of the tuffaceous rock-fragment sandstones keeps a good relation with porosity and shale content in form of negative linear function, but effect of shale (be made of tuffaceous) content is only 5-10 times as small as that of the porosity, hence can be neglected. ⑤With porosity increasing, compression wave velocity is relatively sensitive to fluid alternation, and the range in which velocity varies keeps positive correlation with porosity.关键词
凝灰质火山碎屑岩/声波速度/胶结类型/接触方式/岩石物理性质Key words
tuffaceous pyroclastic rock/ acoustic velocity/ cementation type/ particle contact mode/ petrophysical property分类
天文与地球科学引用本文复制引用
韩学辉,李来林,杨龙,赵海波,成德安,仇吉亮..塔南凝灰质火山碎屑岩储层岩石物理试验研究[J].中国石油大学学报（自然科学版）,2012,36(3):69-75,7.基金项目
山东省自然科学基金项目(Y2008E08) （Y2008E08）
国家油气专项课题(2011ZX05009-003) （2011ZX05009-003）
