石油勘探与开发2018，Vol.45Issue(3)：396-405,10.DOI:10.11698/PED.2018.03.04
页岩微观孔隙模型构建——以滇黔北地区志留系龙马溪组页岩为例
Model construction of micro-pores in shale: A case study of Silurian Longmaxi Formation shale in Dianqianbei area, SW China
摘要
Abstract
Based on scanning electron microscopy and nitrogen adsorption experiment at low temperature,the pore types and structures of the Longmaxi Formation shale in the Dianqianbei area,SW China were analyzed,and a molecular model was built.According to mathematical statistics,the validation of the model was solved by converting it into a mathematical formula.It is found by SEM that the pores in clay mineral layers and organic pores occupy most of the pores in shale;the nitrogen adsorption experiment at low temperature reveals that groove pores formed by flaky particles and micro-pores are the main types of pores,and the results of the two are in good agreement.A molecular model was established by illite and graphene molecular structures.Moreover,based on the fractal theory and the Frenkel-Halsey-Hill formula,a modified Frenkel-Halsey-Hill formula was proposed.The reliability of the molecular model was verified to some extent by obtaining parameters such as the fractal dimension,replacement rate and fractal coefficients of correction,and mathematical calculation.This study provides the theoretical basis for quantitative study of shale reservoirs.关键词
滇黔北地区/页岩/志留系/龙马溪组/微观孔隙/孔隙模型/模型验证Key words
Dianqianbei area/shale/Silurian/Longmaxi Formation/micro-pore/pore model/model verification分类
能源科技引用本文复制引用
陈科洛,张廷山,陈晓慧,何映颉,梁兴..页岩微观孔隙模型构建——以滇黔北地区志留系龙马溪组页岩为例[J].石油勘探与开发,2018,45(3):396-405,10.基金项目
国家自然科学基金(41772150) （41772150）
国家科技重大专项(2017ZX05063002-009) （2017ZX05063002-009）
