Research And Application Of Old Well Re-Examination Technology In The C Oil Field

Re-examination of old wells plays an important role in rolling reservoir increase and potential tapping.After many years of research and exploration,the re-examination of old wells technology has been progressing,the results have become increasingly remarkable,and the evaluation methods have become more and more diversified.This requires logging workers to synthesize all kinds of geological exploration data and create a technical method of old wells re-examination and evaluation in accordance with the characteristics of each oilfield.In view of the characteristics of the 10 area in Peru,this paper comprehensively utilizes the comprehensive data of well logging,oil testing and production to search for suspicious oil and gas horizons,and puts forward suggestions for hole-filling horizons.On the basis of collecting,sorting out and classifying logging data,coring data and production dynamic data,this paper studies the "four characteristics" relationship of reservoirs,redefines the logging interpretation model of the study area and carries out detailed logging interpretation.According to the results of researching logging,oil testing and fracturing,comprehensive production dynamic data,combined with formation correlation of adjacent wells,the missing layers are found out and the perforation adding layers are determined.Finally,by synthesizing production distribution and water intrusion layer distribution,the enrichment area of remaining oil is predicted.The research results of this paper have certain application value for the research of value-added and remaining oil distribution regularity of the C oilfield in the 10 area of Peru.