Research On Structural Characteristics And Evaluation Of Exploration Targets In Dinan Area, Junggar Basin

The Dinan broken band in Junggar basin abdomen is Xinjiang Oil Company one of the hot fields in order to find scale reservoirs recent Two years.The sequence stratigraphic correlation technique is used to sort out the distribution characteristics of the study area;The micro fracture identification technology is used to comb the plane combination of fracture of the study area;Using the wave impedance inversion technique,the highlight body advantage reservoir prediction technique and the time frequency analysis technology,the reservoir prediction and oil&gas prediction are carried out for the main purpose of the study area.Through this topic research,carry out the structure characteristics and hydrocarbon accumulation characteristics of the studied area in-depth analysis.Has been clear about the hydrocarbon accumulation periods and the advantage of oil and gas migration path,Set up the oil and gas accumulation patterns.The overall performance in the study area for the construction of "two convex clamp a concave" pattenr,due to the hercynian fracture control,In the Permian sedimentary period of concave and convex pattern,With complete sag zone formation development,However,north-south trunk is lack;During the period of the triassic strata deposit has been filled up characteristics,Overall performance for the northeast uplift background of slope;The initial implementation of a new structure interpretation the Permian in the study area the ground spring set of hydrocarbon source rock distribution area of more than 4500km2,Thickness is 150m?260m,estimating total resources of 6 billion tons;In the study area,"Three periods three groups"Fracture development,In the Late hercynian,Tectonic framework has been basically formed In the study area.In early indosinian period,Fracture is given priority to with strike-slip properties,In the Yanshan-Himalayas period,Breaking into a series of tensile fracture.The influence of the indosinian period episodic tectonic movement,The north-south trunk squeeze each other,And in the study area form the convergent effect,Formed a series of north west to adjust thrust faults,composite with north east to strike-slip fault,forming a series of block structure;Accumulation analysis,the research area is the source of endogenous hydrocarbon potential,strike-slip faults development scale of fault block traps traction nose-like zone,fan delta front facies belt widely development "accumulation conditions.Based on this understanding,Has been clear about the north slope of DongDaoHaiZi depression Dinan8?Dinanll is the favorable zones for the next step prospecting.