The Lithological Features of Sublacustrine Fans and Significance to Hydrocarbon Exploration: A Case Study of the Chang 7 Interval of the Yanchang Formation, Southeastern Ordos Basin, North China

Figure 14

Pore types in the study area: (a) primary intergranular pores and dissolved intergranular pores, well X66, (-); (b) lithic dissolved pores, Shiwang river profile, (-); (c) microfracture pores, well X66; (d) intercrystalline pores, well X54, (-); (e) dissolved intergranular pores and grain-coating chlorite, Shiwang river profile; (f) feldspar dissolution pores, Shiwang river profile.

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