Downhole Identification And Evaluation Of Geology And Geophysics Of Oil, Gas And Water Layer

New geological logging technical method of pyrolysis gas-chromatogram and Gas chromatography is briefly introduced to evaluate Light crude oil zone and Residual oil zone here, involved in Geology, GeochemicaL Pyrolytic parameter and Geophysical method.Pyrolytic parameter is used to establish the quantity evaluative method on estimating oil saturition, Viscosity of petroleunu Density of crude oil, it is important significant to Detailed survey, oil and gas geological reserves .It is breakthrough that the method result in detailed distinguishing and evaluating the fluid property of reservoir bed in barehole by precise distinguishing oil and gas zone. Improving comprehensive explanative percent, give reasonable plan of testing, reduce exploration risk, and jump from relative explanation to quantitive evaluation.The research answers: l.what is in bed 2.How much is in bed 3.How is flow property 4.How much of recovery are there in bed.Within one year, the mud-logging data. Logging data, Testing data from 95 drilling well were collected and the trial in place was run. the comprehensive method about distinguishing and evaluating on oil gas and water bed has been established . then achieve the result following:1.establishing the new mud-logging method to distinguish oil and water bed. 2.getting the calculative method on low critical value of productive bed. 3.taking hold of the new distinguishing oil and water method by using pyrolysis gas-chromatogram and Gas chromatography and establishing fewer explanative and evaluative module on complex oil and water bed.The new technology take better effect at Wei Xing-taitong oil field, Xin zhao oil field in Daqing. Comprehensive explanative percent of oil water bed achieve 87.7%, meanwhile explanative percent of light crude oil bed is 89.3%. explanative percent of residual oil bed is 81.8%.The research is know as important method and take better effect.