2002•Journal of Mineralogy and PetrologyRequires access

THE RESEARCH ON THE ANCIENT KARST OF THE WELL TZ16-TZ24 AREA IN THE CENTRAL TARIM BASIN

W Y B Chang

Abstract

The ancient carbonate ancient karst of Well TZ16-TZ24 area can be divided into two main categories, the erosion karst and deep karst.Five belts can be differentiated in the erosion karst in profile,namely the weathering shell, vertical permeating belt, season changing belt, horizontal underflow belt and deep slow flowing belt.Both erosion karst and deep karst experienced 3 periods of development in the geology history. Deep karst had a great influence on the carbonate reservoir porosity in this area. Many factors such as lithology, sedimentary faces, tectonic, temperature and the ancient hydrographic net affected the development of the ancient carbonate karst are the main factors.Both erosion karst and deep karst experienced 3 periods of development.

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Key concepts: Karst, Geology, Carbonate rock, Sedimentary rock, Lithology, Tectonics, Erosion, Carbonate