A Study On Logging Interpretation Evaluation Methods In Jiyuan Oilfield Of Changqing Oilfield

There are wide exploration and development areas in Ordos basin,but reservoir distributions are more scattered,there are reservoir distributions in Jurassic yanan formation,chang1 ?chang2? chang3? chang4+5? chang6? chang7?chang8?chang9?chang10 of Triassic Yanchang Formation,the reservoir physical properties and homogeneity are poor,water cut is complex,the correlation of four properties is poor,It is very difficult to oil and water layers identification,reservoir distributions are not homogeneous,fluid properties and distribution are complex,the characteristic of the reservoir is more hiddener,the variation of resistivity of local oil layer is rapid,there are the developments of low resistance oil layer and high resistance layer,the existence of these factors makes oil and gas interpretation and evaluation and confirmation of production test very difficult.So for all these reasons,in this paper,based on techniques such as the gas logging,geochemical Logging,light hydrocarbon logging,nuclear magnetic resonance logging,conventional physical properties analysis,we summarize Logging interpretation evaluation methods of identification reservoir fluidof Jiyuan Oilfield through comprehensive analyze and research of reservoir fluid properties of yanan formation and Yanchang Formation of jiyuan Oilfield.these methods have a better solution to the identification of reservoir fluid of yanan formation and Yanchang Formation of jiyuan Oilfield,raise the coincidence rateof interpretation and play an important role in oil and gas exploration and development.