Structural Characteristics And Oil-gas Distribution Of Ng_下-Ed_上in Z113Block

The guantao and dongying formation of zhuangnan fault zone have complex geologicalstructure.Development characteristic of faults and structural style are not distinct.Sub-layercorrelation is very difficult and sub-layer distribution characteristics is not explicit.Oil-gasdistribution is scattered.The thesis is very important for increasing geological structure anddistribution regulation of the strata in buried hill and guiding the exploration and developmentof oil-gas.Based on well logging，mud-logging and geological data，use cycle correlation，seismicdata and well-logging data to chose several profiles to establish strata framework.Finally，ascertain the distribution rule of strata.Based on stratigraphic division and correlation，discuss the structural characteristics ofthe study area by3-d seismic data interpretation.Zhuangnan fault is the main fault.Due toextension，the revolution of fault structure style make the part of zhuangnan fault becomearcuate.East-west faults develop in the study area under the inflution of zhuangnan fault.Platetype and shovel type are the main forms of fault profile.Zhuangnan fault zone has complex geological structure and varied sedimentaryenvironment. There are many types of reservoirs.Tidy up oil layers data of marine of all wellsin the study area and use seismic horizon calibration of seismic interpretation，combined withfine fault interpretation to ascertain the oil-gas distribution revolution and the control functionof structure to oil-gas.Form the third member of dongying formation to guantao formation,thefault characteristics have complex changes.Zhuangnan fault and “Y” structural type are themain dimension of hydrocarbon accumulation.These faults provide good channels for oil-gasmigration and the crossrange blockage make oil-gas become formation conditions of structural lithological oil and gas reservoirs.