The Character Of Sedimentation On Silurian In The Kongquehe Zone Of Tarim Basin

The article give a depth study about area structure background, deposit characteristic of Silurian in Kongque River region, which according to the prospect research present situation, using available geology,geophysical exploration,drill and comprehensive research material sufficiently, utilizing oil geolgy, sedimentology, sequece stratigraphy and the new theories,new technique and new means. Base on the identification strata and seismic trace, the article build stratigraphic sequence framework of Silurian in Kongque River region, point out lithology and pattern in Silurian. Classified individual well lithologic sequence and facies about 9 Wells in the region, studied seismic and sedimentary facies, built sedimentary facies and subfacies classification system, which suit the region crop , logging and seismic and could be identified. Shore neritic facies clastic rock is the chiefly sedimentary, which mainly is bund facies sandstone, the better reservoir mainly distribute in lower bench of the lower sandstone in Silurian. The mudstone in Yimuganta and Tata'ai'ertage formation is the main capping formation. At last, basedⅠon the storage-cover assemble type in the region, present sandstone reservoir-mudstone, close sand capping pattern, sand reservoir-close sand capping pattern are the chiefly reservoir capping style, thereinto red mudstone of Yimuganta formation and the upper close sand segment of the lower sand region is the capping formation, and the reservoir-capping in lower bench of the lower sandstone is the best in Silurian, the pattern which distributed area is theⅠbeneficial region in the next prospect in Silurian。...