Reservoir Parameter Evaluation And Reaserves Calation Of Chang2in Zhiluo Oil Field

Zhiluo oilfield Chang2members of Triassic Yanchang Formation is mainly the low porosity and low permeability oil field. This article unifies the well drilling, the logging, the oil well logging and each kind of chemical examination material, has studied, mainly promote the research of reserves parameter on the foundation in research such as sedimentary facies, petrology characteristic, hole structure characteristic, diagenesis characteristic, natural characteristic in this district Chang2members.By researching of the correlation of porosity and acoustic time, finding which are closed, and the correlation coefficient above0.9.Based on the information to establish the formula explained by the large number of well-layer core analysis data validation, interpretation of high precision, for the production wells to provide a reliable interpretation of the porosity data. Oil saturation mainly determined by log interpretation model-based, established interpretation plates to coring data and mercury data analysis to interpret the results validate the results, accuracy is higher.Effective thickness of the explanation of the relationship established in the four studies, which based on full use of oil testing results and core logging data integrated with a variety of logging parameters to determine, plates comprehensive line rate of90%, in line with storage specifications.Zhiluo oilfield Chang2members of Triassic Yanchang Formation Petroleum Technology recoverable reserves104.94×104t, is belong to small fields. Chang2oil reservoir long oil-bearing area26.33km, recoverable reserves of oil abundance of3.99×104t/km,is buried in shallow, low-yield, is pecial low-abundance field.According to projections indicate that production of Zhiluo oil field:When the output of0.12t/d is the economic limit of production, the corresponding economic recovery of6.5%.