Figure 1

Core electron microscope and cast photos of carbonate reservoir in the study area. (a) Moxi 17, Longwangmiao Formation, 4612.50–4612.61, fine-silt crystal sand debris dissolved pore dolomite, \(\times\)20, single polarization; (b) Moxi 17, 4628.07–4628.34, medium-coarse grained sandstone lithic dissolved pore dolomite, intergranular dissolved pore development, partially filled asphalt, \(\times\)20, single polarization; (c) Moxi 13, 4640.15–4640.30, fine-medium crystalline dissolved pore dolomite, the dissolved pores see the asphalt ring edge, \(\times\)20; (d) Moxi 13, 4606.28, fine-grained residual sand debris dissolved pore dolomite, cave development, single polarization, \(\times\)20; (e) Moxi 12, 4622.05–4622.21, medium-fine-grained residual sandy dolomite, intergranular solution pore development, casting body, single polarization, \(\times\)20; (f) Moxi 12, Longwangmiao Formation, 4636.82–4637.10, fine-grained sand-clastic dolomite, see mesh seam development; (g) Moxi 12, 4628.32–4628.50, Longwangmiao Formation, fine-powder crystal residual sandy dolomite, fracture, casting body, single polarization, \(\times\)20.