Development model of compound buried-hill reservoirs in the Yingmai 32 area of Tabei and its significance for exploration
LUO Ri-sheng
HUANG La-mei
CUI De-yu
LUO Xin-sheng
ZHU Yong-feng
Abstract：A special type of buried-hill reservoirs,which is compounded by both carbonates and sandstones, has been discovered in the Yingmai 32 area of Tabei (North Tarim).This paper describes part of these reser-voirs and analyzes structures and sedimentary history of the Yingmai 32 area.We suggest that the key reason for the generation of such reservoirs is that multiple-episode truncations and overlaps have happened along the unconformity surface of basement rocks.The two enormous unconformities that developed during the Middle to the Late Caledonian period and Hercynian to Indo-China period set up the foundation for the build-ing-up of these compound reservoirs.The reservoirs could be divided into two types:truncation type and o-verlap type.The truncation type can be further divided into three different models:overlap,pinch-out and graben models,while the overlap type includes three sub-models:overlay,pinch-out and gully models.Such compound buried-hill reservoirs are common in Tabei.Thus we should make more efforts to describe the top surface of all connected reservoirs instead of carbonates alone,which would significantly contribute to expan-sion of hydrocarbon exploration.
Keywords：Yingmai 32compound buried-hill reservoirreservoir development modelsubtle trapsignifa-cance for exploration
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 165-170 )