The APPI FT-SCR MS Analytical Technology Of Different Occurrence States Of Shale Occluded Hydrocarbons

In the shale oil exploration in Jiyang depression state,the retained oil in mud shale interval's occurrence and flow state is an urgent problem during the shale oil exploration.With the mean of FT-SCR MS,this paper constructed APPI FT-SCR MS for the composition of shale oil,and built detailed composition analysis to the less polar compound(mainly PAHs and Sulfur compounds),and processed FT-SCR MS on extract the cores in coring system of SLOF shale oil exploration.Based on the analysis of heteroatomic compound DBE and carbon number distribution in the extract the cores from different depths of L69,we figured out that the HC compound DBE are all greater than two and maintained the highest level of relative abundance;the DBE distribution of S1 compound only less than HC compound,and with the deepening bury,S1 compound which DBE equals to 6 and 9 collected low carbon number gradually.According to the systematic analysis on extract the cores from Zhanhua seg and Dongying seg systems with APPI FT-SCR MS,the core extracts from Zhanhua seg contained higher level of sulfur compounds in abundance because of the different sedimentary environment,and the S(m/z212)/ HC(m/z212)ratio is higher,while Dongying seg maintained lower level of sulfur compounds in abundance with lower S(m/z212)/ HC(m/z212)ratio.With the mean of Multi-temperature step pyroelectric hydrocarbons,we selected the typical sample of FY1 coring system,the results illustrated that FY1-11 B and FY1-22 are both back peak types,which means they contain low content of S1-1 and S1-2 with high content of S2-1 and S2-2;FY1-18 and FY1-33 are both former peak type,contain high content of S1-1 and S1-2 with low content of S2-1 and S2-2,combining core chip observation,we concluded that the sample extracts from FY1-11 B and FY1-22 are mainly absorbed hydrocarbon with low level mobility,while the ones from FY1-18 and FY1-33 are mostly free hydrocarbon with high level mobility.The data from typical samples of FY1 with the mean of FT-SCR MS illustrated that in the samples of FY1-11 B and FY1-22,the strength ratio of HC compound and N compound is weak,HC compound with high condensation contains high level of abundance,while in the samples of FY1-18 and FY1-33,the strength ratio of HC compound and N compound is high,HC compound with high condensation contains low level of abundance.