--> Identification of Neogene Mixed Lacustrine Carbonate in Western Qaidam Basin

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Identification of Neogene Mixed Lacustrine Carbonate in Western Qaidam Basin

Abstract

Abstract

Comparing with marine carbonate, lacustrine carbonate is limited in distribution globally, moreover, as an unconventional kind of carbonate, it can't be evaluated and identified with conventional methods, so less attention has been paid and less study have been made on it. However, according to exploration experiences all of the world, lacustrine carbonate can be important source rock and reservoir rock in some cases.

Qaidam basin, a large salt-water lake basin, had the lacustrine mixed deposition setting to form complex carbonate reservoirs, where the recently found Neogene lacustrine algal limestone is an exploration target worth attention, the author has used drilling seismic and well logging data to identify lacustrine algal limestone, the method is of great significance for the exploration and development of lacustrine carbonate in other areas.