The Application Of Using TFEM Method To Detect The Reservoir Targets In Buried-hills Of DCH Uplift And The Test Research

Chinese oil and gas exploration potential is tremendous, plenty of oil and gasresources to be in the exploration and development. Buried hill structure as an importantstructure of oil and gas enrichment, has always been the important fields in many parts ofthe oil and gas exploration. The central hope of buried hill oil and gas field explorationand development is the most conspicuous. Since Ren Qiu oilfield going north depressionwas found in the1970s as a representative of a large number of buried hill oil and gasfields, the importance of the identification and detection of buried hill reservoir furtherhighlighted. Patterns buried hill reservoirs have complex, the reservoir age range,lithology diversity, hydrocarbon source rocks, reservoir space is secondary, reservoir isabundant, has huge potential, etc. But due to the characteristics of buried hill, make itsonce by the exploration of exploration and development methods and the limitation of theburied hill exploration in complex condition, stagnant. Due to the complicatedsurroundings accumulation conditions, structural trap development, and similar in seamhole, fissure, cavity trap relative development, so when using seismic method carries onthe exploration and development tend to depict the profile for the reflection characteristicsof dome structure, as in a group of two or three strong phase under the weak reflection,some even no reflection. So for the buried hill exploration, new mode changing, searchingfor buried hill reservoir exploration of understanding is the key to achieve newbreakthroughs, using new methods to buried hill reservoirs exploration has very realisticsignificance and value. Because electromagnetic method to the exploration of fluid has astrong ability, therefore has received the widespread attention for oil and gas explorationin recent years. Time and frequency electromagnetic method as one of the emergingtechnologies of hydrocarbon detection, in oil and gas monitoring and recognitionachieved good application effect.Based on the time and frequency electromagnetic method to the exploration of the buriedhill, one of the new theory methods means to explore the buried hill exploration. Throughcore test and model simulation studies are similar frequency electromagnetic explorationmechanism and feasibility of earthquake are summarized based on method of test-electromagnetic joint exploration of buried hill reservoirs, new methods mainly finished the following work:(1) Analysis of the current status and situation of buried hill oil and gas exploration inour country, put forward and the process of the buried hill reservoir exploration problemsnamely, the use of a single seismic method in exploration it is hard to meet therequirements of the buried hill exploration, and put forward the corresponding explorationand new model-electromagnetic method and the integrated model of the earthquake.(2) Geological model is set up according to the practical geological situation of thecentral hope, forward modeling. Through the simulation study and the feasibility analysisof its application in exploration of buried hill oil and gas, we innovative the methods.(3) Buried hill core complex frequency characteristic test study, based on the actualcollected core samples from the central hope complex frequency characteristic test, theresult to summarize the buried hill oil and gas target electromagnetic anomaly regularity.(4) Through time and frequency electromagnetic method is used to obtain data andinformation processing, the buried hill oil and gas target frequency electromagneticanomaly and anomaly interpretation.(5) When the comprehensive evaluation of frequency electromagnetic method inexploration of buried hill insider reservoirs in application effect. Find the most suitable forthe comprehensive evaluation method of buried hill exploration.