Balanced Cross-Section in M Basin,Kazakhstan and Its Application in the Study of Hydrocarbon Accumulation

Balanced cross-section can be used not only to evaluate and test seismic interpretation profiles,analysis of tectonic evolution,but also can combine the oil and gas accumulation theory,truthfully reproduce the dynamic accumulation process of hydrocarbon.In this paper,we balanced one main seismic profile in M basin,Kazakhstan,and analyzed the characteristic of tectonic evolution and its effects to hydrocarbon accumulation.The results show that the evolution of the basin can be divided into five stages,in which the Early-Middle Jurassic period is the main stage for basin fracture extension,deposition and subsidence,and the Cretaceous period is the main stage for basin depression.Structure controlled the hydrocarbon accumulation conditions.Two tectonic uplifts and two deep buries are the main factors which resulted to the discontinuity of hydrocarbon accumulation process.