Petrophysical Characteristics of Silurian Mudstones from Central Taurides in Southern Turkey  

作　　者：Zeynep Döner Qinhong Hu Mustafa Kumral Md Golam Kibria Hongguo Qiao Mengdi Sun 

机构地区：[1]Department of Geological Engineering,Faculty of Mines,Istanbul Technical University,Istanbul 34469,Turkey [2]Department of Earth and Environmental Sciences,The University of Texas at Arlington,Arlington TX 76019,USA [3]Shandong Provincial Key Laboratory of Deep Oil and Gas,China University of Petroleum(East China),Qingdao 266580,China [4]Key Laboratory of Tectonics and Petroleum Resources,Ministry of Education,China University of Geosciences,Wuhan 430074,China

出　　处：《Journal of Earth Science》2021年第4期778-798,共21页地球科学学刊（英文版）

基　　金：supported by the Abroad Doctoral Research Scholarship Program(No.2214A)from the Scientific and Technological Research Council of Turkey(TUBITAK);the National Natural Science Foundation of China(No.41802146);the National Science and Technology Major Project of China(No.2016ZX05034-002-006);the Scientific Research Projects(No.39184)of Istanbul Technical University.

摘　　要：This study used a range of integrated and complementary experiments to examine porestructure,fluid-shale wetting characteristics,sample size-dependent porosity towards different fluids,and imbibition behavior,as well as the relationships between these properties and the mineralogy of Silurian mudstones in the Central Taurides of Turkey.Working with different sample-sizes,the experiments consisted of helium pycnometry,low-pressure nitrogen physisorption isotherm,mercury intrusion porosimetry,fluid immersion porosimetry,liquid displacement,fluid droplet wettability and contact angle measurements,and spontaneous imbibition of fluids;four fluids with different hydrophilicity were used to assess the characteristics of fluid-shale interaction and its influence on porestructure.Results show that studied mudstones can be grouped into three rock types:siliceous,carbonate-dominated,and mixed mudstones.Siliceous and mixed mudstones have higher porosities,pore-throat diameters,surface areas and tortuosities than the carbonate-dominated mudstones,regardless of sample sizes and fluids used.With low permeabilities and medium pore-throat sizes for the siliceous and mixed mudstones,the wettability and imbibition results show that these mudstones are both oil-wet and moderately-to-high water-wet.In contrast,the carbonate-dominated mudstones exhibit oil-wet characteristics.These results indicate that studied siliceous and mixed mudstones in the Central Taurides seem to have appropriate petrophysical properties in the context of reservoir quality.

关 键 词：Silurian mudstones Central Taurides of Turkey petrophysical properties pore structure CONNECTIVITY fractal dimension 

分 类 号：P618.13[天文地球—矿床学]