Refined Structural Interpretation Of The Q Block In The Aonan Oilfield

Q block in Aonan oilfield is a developing zone of horizontal wells,horizontal wells of the reservoir in the process of drilling depth changes in the horizontal precision is very high,the accuracy is directly related to the structural interpretation of reservoir inversion and geological modeling precision,it will affect the success rate of horizontal well,affect the accuracy of the analysis on structural characteristics therefore,in the research area.The special requirements on precision structural interpretation,refined structural interpretation of the study area,strengthen the understanding of the structural features of this area.Based on the careful analysis and draw lessons from the previous research results,this paper makes full use of the seismic,logging and drilling data,and carries out a detailed study on the Q-block of Aonnan Oilfield,and makes a detailed explanation for the oil-bearing group in the area,which focuses on the interpretation of a group of top(P32)and bottom(P52)interface and its fracture research,at the same time,explains the P11,P22,P42 a total of five small layers,makes the interpretation of the earthquake horizon and fault interpretation,and explanation of network density is set to 1x1.During the process of interpretation,seismic geologic stratigraphic calibration and fault interpretation were carried out.Aiming at the fault development in the study area,the low seismic resolution of the research unit,the contradiction between the Drilling and Seismic and the difficult characterization of small fault,the horizontal slice interpretation technique and the coherence time slice interpretation technique are used to explain the plane fault.And the cross section fault is explained by the longitudinal magnification technique.Finally,the structural maps of P11,P22,P32,P42,P52 and P52 of the Ao Q block are obtained,and develop the research of a series of top(P32)and bottom(P52)interfaces of microstructure and small faults,to find out the main purpose of the local structure of the spatial distribution of the situation,and find out the plane and space distribution situation.A total of 31 faults were analyzed,and obtained the data of fault tendency,general length and fault breakage.And the understanding of the tectonic form of the Q-block in Aonnan Oilfield has also changed greatly.It is found that the structural tectonic form of the study block is a monsoon of the northwest,and it is found that the structural high point is N2560312 well,the high point is deep-1155 m,and the top of the study area(P32)is about-1200 m deep.Through the elaboration of the fine structure,the depth of the whole study area is more reliable and the accurate structure and depth are provided.The structural characteristics of Q block in Aonnan oilfield are analyzed accurately,which lays the foundation for horizontalwell design.