Keywords: 
• reservoir prediction /
• oil pool characterisation /
• fluvial-delta /
• sedimentology

Abstract: Techniques and methods used forprediction of reservoirs and description of pertoleum accumulation have important effect in exploration and exploitation of engineering of oil and gas resource. However, their more abundant base connotations are taken into account when advancement of method andinnovation of technique are paid attentionto. Especiallywhen the research objects are hiddenpetroleum accumulations such as lithologic and strata reservoirs, their core contents refer to theory problems of sedimentary geology. So,in this paper it aimsat the peculiarity of lithologic reservoirs of sedimentary system of fluvial-delta-lacutrine of terrigenous basin in our country, many sedimentary geologicalproblems in prediction of reservoirs and description of pertoleum accumulation are expounded. These problems include the background and geological basement of research objects, the description of reservoir facies architecture of pertoleum accumulation, genetic types and their description of reservoir at delta front, petrographical facies mapping on small scale, elements of reservoir formation and high grade target and the research of reservoir three dimensionalarchitecture taking the reservoir flow units as objects, and it emphasizes that techniques of prediction of reservoirs and description of pertoleum accumulationare dependent onsedimentary geology,which is the fundamental basis.