Fine Structure Description In South Of Lamadian Oil,Songliao Basin

Daqing changyuan oilfield in Songliao basin development already has more than 50 years,most experienced flowing production phase,adjust the phase formation and comprehensive transfer of pumping stage,injection-production system adjustment stage,secondary well pattern encryption stage,the main reservoir of polymer flooding development stage and other development adjustment stage,at present has entered high water cut development period,including imbalance of grim situation,therefore need to further clarify the oilfield geology and looking for new method development adjustment.Although the research on the structure of the long wall has been basically mature,some well stratification and breakpoints and fault mismatches are still existed in the construction interpretation.And southern lamadian area is located in the fault relative development of lamadian oil field area,for the production in recent years are in urgent need of blocks,in order to meet this block fine development adjustment and new well deployment requirements,and it is necessary for the blocks in well combined with fine structure description,so as to guide the fine adjustment of the blocks of remaining work.This paper carried out well seismic structure interpretation method,structural modeling method and structure analysis method study,high reservoir,Portugal on demodex south region combined with fine structure interpretation of the well.In this paper,through the base data pretreatment,making synthetic seismogram,horizon interpretation,fault interpretation,structural mapping process,such as the key using a variety of methods for fault interpretation,accurate identification and mapping out the fault,improve its accuracy;In this paper,the structure refinement model of depth domain is established,and the fault and well breakpoints are matched,and accurate fault model and horizon model are established.Then the structural features,fault structure and fracture patterns of the block are studied and analyzed.Studies have shown that la south block based on the results of seismic interpretation,well breakpoint match the fault of fault model,a layered model of the well and layer phase matching,and through the reasonable grid set final structure model is set up;Fault mainly including north west to the small faults and the many times of associated activity is part of the fault of small fault,major tectonic style have been removed,the rift tectonic style and inversion tectonic style,fault combination style characteristics mainly for double break type rift,lei fracture combination tectonic style,double break type "Y" fracture combination tectonic style and trapezium combined fracture tectonic style.,these studies can be used to include fault zone and injection-production plan adjustment of the fault zone,and avoid fault for not spud Wells layer and well location optimization adjustment,therefore,the research results can effectively guide the oil field development and exploration of new well plan,to block the follow-up research laid the foundation of all work.