Multifractal Analysis of Pore Structure and Evaluation of Deep-Buried Cambrian Dolomite Reservoir with Image Processing: A Case from Tarim Basin, NW China

Figure 2

The thin section images of different types of dolomite. (a) Thin section image of MD sample S18 with low porosity value 1.38%. It shows that the intergranular pores are not developed and the fractures are filled with quartz, asphalt, and other minerals. (b) Image of SD sample S32 with porosity 5.07%. The pore space consists of medium and small intergranular pores and dissolved pores. (c) Image of FD sample S5 with porosity 14.87%. The pores are mainly larger intergranular dissolved pores. (d) Image for MD sample S4 with porosity 10.2%. Intergranular pores and intergranular dissolved pores with large size mainly develop in such type of dolomite. (e) Image of CD sample S22 with porosity 2.21%. The intergranular pores were slightly developed. (f) Image of GD sample S19 with porosity 4.43%. Dolarenite was recrystallized as fine crystalline dolomite. The intergranular dissolved pore with medium scale distributes along fractures.

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