Research And Application Of Logging Method Of Carbonate Buried Hill Reservoir In Huabei Oilfield

Carbonate buried hill is one of the major oil,gas exploration and development target zone in North China Oilfield.Due to the formation of carbonate buried hill is very complex,exploration and development encountered hill interface judgment is inaccurate,resulting in drilling accident,such as “leakage get”,“mistakenly get”,causing and subsequent down hole drilling,oil testing,fracturing,mining construction difficult,bringing huge economic losses to the oil and gas exploration and development.The main research summary which called Huabei Oilfield carbonate buried hill interface basic features,Huabei Oilfield buried hill reservoir layers of carbonate rocks microscope microscopic pattern established for different types of buried interfaces obtain quasi-technical methods.Huabei Oilfield exploration area closely carbonate rock formations characteristic hill region,oil drilling conditions and test results,regional regularity of perfect judgment ancient hill interface technology,the establishment of carbonate rock reservoir heterogeneity Recognition,classification methods to explore oil and gas due to water under equilibrium conditions show identification and evaluation.Drilling in carbonate rocks buried,buried interface inaccuracies,leading to inaccurate identification hill interface,it will cause difficulties to continue drilling.It summarizes the seismic profiles,stratigraphic correlation hill interface forecasting techniques;drilling identification,geological cycle,lithology recognition technology to determine carbonate rocks buried hill interface.Carbonate buried hill reservoir type complex,strong heterogeneity,the conventional technology can not effectively obtain reservoir parameters,severely restricted the identification and evaluation of reservoir evaluation,especially in fractured reservoir evaluation logging industry is a major problem.For carbonate reservoir identification and evaluation of established power index rapid identification and evaluation of carbonate reservoirs method for drilling a basis for decision-making and improve efficiency.Through the research,the use of conductivity identification,quantitative fluorescence oil index,the gas component identification,direct display and other methods to identify oil water interface judgment to solve the identification problem hill bottom water,the basis for the calculation of reserves.And probe underbalanced condition explored the use of gas-bearing gas flow parameters identification methods;the use of conductivity,index and other methods to improve the oily water buried recognition;the use of quantitative fluorescence peak wavelength,oil concentration parameter identification oily display method.