Detailed Structural Interpretation Of 3-D Seismic Data In 10^th Block Of Ordovician Tahe Oilfield

This paper taking Tahe oilfield in Tarim basin as an example,discusses the application of three-dimensional sectors-connecting high resolution seismic data interpretation and low-level tectonic sequences,and summarizes the content,thought and method of detailed structural interpretation of carbonate reservoir.Tahe oilfield is located in the north Tarim basin,which is the first Paleozoic marine giant oilfield with billion tonner reserves.It has been brought into development in 2002 and into productivity construction stage in 2006.Even though it has been through series of productivity construction stages,the target Ordovician reservoir formation of Tahe oilfield 10 th area needs to be carefully evaluated for large quantities of undeveloped reserves.Besides,there is comparatively great reservoir developing difference between the horizontal and vertical direction and there are different controlling factors of oil and gas accumulation in different areas,which makes it necessary to re-understand and reevaluate the reservoir.Using three-dimensional high resolution seismic data of the oilfield development on structure and low sectors-connecting sequence of oilfield,study the development adjustment rolling extension and deploy play an important guiding role.The research takes high resolution of 3-D seismic data interpretation as the dominate method,combined with geological characteristics and seismic tectonic interpretation of the target area,fully applying potential seismic data in the fine reservoir description.Main USES of seismic data interpretation,coherent body of data section explains,3d visualization body interpretation and fault of technology and mapping technique,variable shall finish the three-dimensional sectors-connecting Tahe oilfield of seismic data interpretation and tectonic mapping,carry out different phases of faults and low amplitude structure,small fault block and broken nose.In sectors-connecting of 3-D fine structure interpretation on the basis of geological and low oil fine structure based on research achievements of amplitude,adopt various low-level sequence fault earthquakes material identification and interpretation techniques,implement the structural study of low amplitude of the fault block 4,5.Paper then according to the structure of three-dimensional sectors-connecting described the research achievements in construction and fracture characteristics of traps,combining structural evolutionary characteristics and structural development history to analyze the local structure of Tahe oilfield 10 th area.The research also includes tectonic zone of low amplitude,low fault distribution characteristics of sequence with dynamic data analysis of oilfield development sequence of development of the lower fault.Based on the three-dimensional sectors-connecting structural interpretation and low sequence of fault research achievements of Tahe oilfield,the paper proposed the faults' controlling effect of reservoirs in the target area.