Study on the evidence of fluid flow within the Tazhong area of the Tarim Basin, western of China

Xiumei GONG, Basin & Reservoir Research Center, Faculty of Geoscience, China University of Petroleum(Beijing), Changping Dist. Beijing, Peo.Rep. of China, [email protected]

Characterizing hydrocarbon migration within carrying bed systems has being a difficult and critical problem. The purpose, in virtue of geochemistry and organic petrology methods and techniques, is to look for the evidence of fluid flow within sedimentary basin with multi-phase basin forming, multi-phase reconstruction, multi-set of source rocks, multi-phase generation & expulsion, and migration and accumulation and dissipation of hydrocarbon, and then to research the movement of oil with multi-phase filling within the established trellis of carrying bed systems.

The study area is located in the Tazhong area of Tarim Basin, western of China. The main research contents include: 1. Characterizing the distribution between present reservoirs and faults in plane and section respectively, according to seismic and log information, as well as other former research results. 2. Observing the fault zones and fillings within cores, and looking for petrology proof of hydrocarbon migration by means of the fluorescence color difference of fluid inclusions on the basis of the distribution between present reservoirs and faults. 3. Collecting and analyzing oil and core samples along fault zones, upper and lower sides of faults by use of the study on fluid inclusions and nitrogen containing compound to find out the geochemical evidences of hydrocarbon migration within carrying bed systems. Based on tracing the path route of hydrocarbon migration within complex basin, it is helpful for us to open out the spatial distribution of hydrocarbon, which is of great importance to guide oil & gas exploration of the Tarim Basin, western of China.