Nanpu Oilfield Reservoir Evaluation Method And Application Based On Mud Logging

It drilled too many wells in Nanpu NO.5 structure until the Nineties of last century.The effect is not ideal of all lot of wells except 1 or 2 wells when oil test.At present,the structure of the exploration is relatively low,the mechanism of oil and gas accumulation and the law is not clear enough,especially for judging the four laws of oil and gas water is unclear,resulting in some industrial value of the oil and gas layer was missed or wrong Judgment.In this paper,combined with the new mud logging technology,this paper reconstructs the old data,and sets up several sets of explanatory plates,finds several sets of display and reservoir,forms a set of mud logging technology reservoir evaluation method suitable for the area,The entire Nanpu Oilfield to promote the application,the effect is good.Through the new oil and gas to oil test,get a good industrial oil and gas flow,for the Nanpu Oilfield reservoir understanding and post-exploration and development to provide a strong technical support.The results of drilling time analysis,cuttings analysis,Pixar gas chart analysis,gas measurement curve difference method analysis,geological analysis,rock pyrolysis analysis,humidity ratio-hydrocarbon slope analysis,water pressure gas pressure recovery and drilling Combined with the analysis,the evaluation of the study area of ??light reservoirs,low resistance reservoir oil and gas display,for the interpretation of oil and gas interpretation to provide the basis.Based on XRF element analysis,macroscopic characteristics of microscopy,microcosmic characteristics of microscopic and atomic absorption spectrometry(for the basalts and sandstone mixed reservoirs in the Shahejie Formation of Nanpu Oilfield,the characteristics of the rocks were observed under natural light and their characteristics were observed.The contents of Si,Ca,Mg and Sl in rock minerals were determined by atomic absorption spectrometry,and the contents of Si,Ca,Mg and Sl were determined by atomic absorption method.Method to identify reservoir lithology),mud logging and logging curve response characteristics of the method,the establishment of the Nanpu Oilfield lithology identification criteria.Through the drilling data and the physical observation and sampling analysis of the core pool of the Nanpu Oilfield.The method of "humidity ratio-hydrocarbon slope" is established in Nanpu Oilfield,and the first tome to application in the Nanpu Oilfield has solved the technical bottleneck of light reservoir.Based on the comparison of humidity ratio and characteristic component ratio,the interpretation and evaluation criteria of reservoir layer,oil and water layer and water layer are established,which solves the technical problem of oil and gas interpretation evaluation in light oil reservoir and low resistance oil reservoir in Nanpu Oilfield.