Research On Seismic Interpretation And Favorable Reservoir Prediction In The Western Margin Of Taipei Sag And Hongtai Area, Turpan-Hami Basin

In recent years,the Western margin and HongTai area of TaiBei sag have been the key block of TuHa Basin,and the prediction research on the favorable reservoir has important and practical guiding significance.This paper research on fine seismic data interpretation,sedimentary reservoir analysis by comprehensive utilization of structural geology,sequence stratigraphy,reservoir geology and seismic reservoir prediction and so on,In the end,predicts the favorable reservoir distribution by post-stack wave impedance inversion,multiple attribute log inversion,amplitude attribute,Finally points out the next exploration targets.This paper maiuly achieves the following results and understandings:(1)Fine explains the structure,fracture characteristics by the 3D data structure interpretation technology,and makes the synthetic record of 89 wells in the area,calibrates the main formation.Then points out the main reflector and reflection characteristics(TN1t?TE?TK?TJ3k?TJ3q?TJ2q?TJ2s?TJ2x?TJ1s?TJ1b).Comprehensive use of time slice,coherence,curvature,multi-attribute fusion and multi-line parallel interpretation for fine interpretation of the fault,Finally implement the fracture and structure characteristics of in the study area.(2)Sedimentary system is braided river delta and alluvial plain fluvial facies-fan delta of SanJianfang formation of Jurassic in NW QiQuanHu.There are mainly 3 sets of reservoir-cap combination about J1,J2x-J2s1,J2s2+3+J2q1-J2q2+J3.Respectively analyzes the reservoir characteristics of the main purpose of the layer about YuGuo,PuTaogou,ShengNan area.It concluded that YouZi south block which located on the eastern slope of YuGuo area,the northern of PuBei 6 broken nose of PuBei-PuTaogou area,are the favorable reservoir area.(3)For the Xishanyao and Sanjianfang formation,this paper describe the low amplitude structure and fracture characteristics,carry out the comparative study on the small layers and partition and the identification of the sedimentary cycle.Its corresponding sequence is JSQ2,JSQ3 and JSQ4,then describes the electrical characteristics of different stratigraphic sequence.Carry out the main sedimentary reservoir analysis and implementation the sand body distribution by comprehensive utilization of the sedimentary microfacies analysis,contrast sand,seismic attribute inversion.At the end,it describes J2x4 sand body distribution in rHong 23 well block,Identified and characterized 6 sand body,the total is 28.6 km2.(4)In the end,optimizing the several favorable exploration targets in the study area.It is about the southern of YaDong 3,You 1,the northern of PuBei 6 trap in the Western margin of TaiBei sag;the Western of HongTai 23,the Eastern of HongTai 21,the northern of HongTai 16 and the southern of HongTai 7 trap in the HongTai area.