Study On Log-evaluation Technique For Buried-hill Reservoirs In DongPu Depression

This paper collected elements about drilling, core samplling, logging, testting for all wells of burried hill in Dongpu depression. It analysised, summarized and summed up combined with well-logging informations, in accordance with geological ages.This paper established log interpretation model for sand-shale profile and carbonate profile according to lithologic character of buried-hill reservoirs in Dongpu depression. Also put forward a computational methods of geological parameter, such as porosity, permeability,oil saturation and so on, in sand-shale formation and carbonate formation. It proposed various methods to determinate existence and occurrence of fractures, and the method to calculate fracture porosity with conventional log data, for carbonate formation existance.The result of practical application in eight wells indicated the method is very effective.well-logging data re-processed used various methods that this paper introduced. And two metheds for fructure porosity, the one is originated from conventional method which distincted secondary porosity between fruvture porosity and caves porosity. Another is a new method inversion from resistivities in reseach from Xinjiang rigion. These was very valuable tries. And its result was nice in comparion with ELAN+.After these, this article proposed own potential formation according to geological agies, which combined with drilling, logging and testting data. and proposed own worthy to test formation or sections. But it was regret because its result not received and tested.This paper proposed own optimazed well-logging combination according to domestic and international status quo equipment, In particular local logging company equipment.This thesis was on Dongpu depression since the 1970's buried hill exploration logging in on a summary. Understanding in a certain depth. Can Dongpu Depression buried hill exploration the next stage of exploration role play warm-up.