Research On Shahejie Formation Subtle Reservoir Evaluation Of Jiuzhou-Hupoying Langgu Sag

Jiuzhou-Hupoying is gallery is concave compound reservoir accumulation zone,belongs to the typical hydrocarbon reservoirs.At present in the accumulation zone of Es2-Es4 have been found in the reservoir of oil reservoir,oil and gas layer.Proven hydrocarbon reservoirs due to burial depth,complex causes,development of oil and gas resource base is relatively weak,needs to further develop the effectiveness of the trap and spatial distribution,reservoir performance analysis of the vertical change research,optimizing favorable scrolling development blocks,comprehensive evaluation analysis,prediction and resources,to ease tensions in the huabei oilfield oil and gas resources and production,the implementation increase in oil reserve and production goals.The stratigraphic sequence analysis method,from the key Wells?single well?high resolution sequence stratigraphy analysis and comparison of the high resolution sequence stratigraphy well two aspects to study the old state-amber camp in shahejie formation stratigraphic sequence and interwell connectivity relation,established the sedimentary period of the shahejie formation in the study area such as the sequence stratigraphic framework,analysis the LST and HST sand body is the most favorable reservoir forming lithologic reservoir.Through the key hole of fine sedimentary facies analysis and description,determine the fan delta is the most favorable sedimentary facies in the study area,especially the fan delta front subfacies.The best is the braided channel sand body,the cause of frontal facies sand.Application of seismic interpretation system for the main purpose of interval,in accordance with the"fault distribution method"of the three-dimensional structure interpretation method to carry on the fine structure interpretation,fine structure interpretation area of about 120 km².At the bottom of the oil and gas in the study area are mainly distributed in Es2,Es3²,Es3^4-1,Es3^4-2formation,from the perspective of the trap evaluation,to select the favorable target area three,respectively,the old state fault and amber camp fault clamping trough fault belt,the old state fault rose plate and amber fault camp up plate.Appliedacousticcurves,reservoirinversionreservoir-capassemblagesin understanding ways such as study area,found mainly in the study area development has three sections of sand sand bodies of fan delta,turbidite sand body and underwater channel sand,sand,and a channel sand body,Es2 Es3 are six main reservoir-cap combination.Combined with the characteristics of sedimentary facies and plane distribution of sand body,summed up the sand bodies in the vertical distribution characteristics on the surface of the peace.Analyzed the favorable conditions of forming subtle trap in the study area,to identify the study reservoiring pattern,daxing fault down steep belt?sag?packing department patterns hydrocarbon reservoirs are mainly the self-generated and since the updip pinchout,breccia body in the form of anticline and breccia body internal lithology change accumulation mode;Amber camp collapse anticline hidden reservoir accumulation mode since the author classifies the type and laying on the reservoir lithologic reservoir accumulation mode.Optimizing the favorable subtle reservoir formation of the formation of Es3^4-2Es1 nine in development sequence in the low and high system domain,beneficial hydrocarbon reservoirs formed by tectonic position for oil sources on both sides of the fault and the nose structure background or antiformal trend bridge of the nose,put forward the drilling deployment,pointed out the direction for the next step is to find favorable traps.