石油实验地质Issue(5)：582-590,9.DOI:10.11781/sysydz201505582
塔北哈拉哈塘地区奥陶系碳酸盐岩岩溶层组特征与溶蚀强度分析
Characteristics and solution intensity of karst formations in Ordovician carbonates in the Halahatang area of the northern Tarim Basin
摘要
Abstract
Fractured and vuggy reservoirs were found in several Ordovician carbonate formations in the Halahatang area of the northern Tarim Basin. The lithology of different formations and their vertical distribution were studied based on microscopic observations and geochemical testing of core samples. Dissolution tests of different types of carbonates showed that the contents of argillaceous matter and MgO could influence carbonate solubility. The in⁃tensity of dissolution decreased from pure limestones, dolomitic limestones, dolomites to muddy limestones. The Ordovician carbonates were classified into two classes, three types and five subtypes. The Yijianfang Formation and the first and second members of the Yingshan Formation are continuous limestones with strong karstification. The first member of the Lianglitage Formation and the third and fourth members of the Yingshan Formation are dolomitic limestones with medium karstification. The other formations were weakly karstified. Drilling results and the presence of “stringed beads” on seismic profiles indicated that the types of karst formation controlled the development of fractured and vuggy reservoirs.关键词
溶蚀强度/溶蚀试验/古岩溶/缝洞型储层/奥陶系/哈拉哈塘地区/塔里木盆地Key words
solution intensity/solution test/paleokarst/fractured and vuggy reservoir/Ordovician/Halahatang area/Tarim Basin分类
能源科技引用本文复制引用
淡永,梁彬,曹建文,张庆玉,郝彦珍,李景瑞..塔北哈拉哈塘地区奥陶系碳酸盐岩岩溶层组特征与溶蚀强度分析[J].石油实验地质,2015,(5):582-590,9.基金项目
国家自然基金青年基金（41302122）、国家重点基础研究发展计划（973计划）（2011CB201001）、国土资源部公益性行业科研专项（201211082）和“广西自然科学基金（2015GXNSFBA139187）”资助。 （）
