石油实验地质Issue(5)：650-655,6.DOI:10.11781/sysydz201405650
咸化湖盆碎屑岩储层中铁白云石的溶蚀作用模拟实验研究
Simulation experiment for ankerite dissolution in clastic reservoir of saline lacustrine basin
摘要
Abstract
It is generally believed that carbonate minerals can easily dissolve. This process will lead to the formation of secondary pores, thereby enlarging the reservoir space and improving the permeability of reservoir rocks. In the QaidamBasin, clastic reservoirs of the Lower Eocene Gancaigou Formation are deposits of saline lacustrine basin, with plaster and ankerite well developed in rock flacks as revealed by polarized light microscopy and scanning electron microscope. Experimental results of fluid-rock dynamic stimulation show that the ankerite dissolution can generate secondary pores, and gypsum catalyzes the dissolution. The iron and magnesium ions generated are reactants in the transformation from koalinite to chlorite. The foliated chlorite easily blocks thin throat, leading to the decrease of permeability, while the dissolution of easily soluble minerals like ankerite increases porosity.关键词
铁白云石/绿泥石/溶蚀作用/模拟实验/咸化湖盆/柴达木盆地Key words
ankerite/chlorite/dissolution/simulation experiment/saline lacustrine basin/Qaidam Basin分类
能源科技引用本文复制引用
黄成刚,袁剑英,曹正林,张世铭,王莹,佘敏,米海杰..咸化湖盆碎屑岩储层中铁白云石的溶蚀作用模拟实验研究[J].石油实验地质,2014,(5):650-655,6.基金项目
中国石油重大科技专项“柴达木盆地建设千万吨油气田综合配套技术研究”（2011E-03）、国家油气专项“前陆盆地油气成藏规律、关键技术及目标评价”项目（2011ZX05003）和中国石油天然气股份有限公司勘探开发研究院青年创新基金联合资助。 （）
