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青藏高原由于地质构造背景复杂,自然地理环境恶劣,石油地质研究十分困难,仍是我国唯一没有进行大规模油气勘探的空白区.作者尝试开展了青藏地区岗巴通-亚安乡、东巧-纳木错油气地表地球化学勘探工作,根据实际探测资料和试验数据,探讨了青藏地区岗巴通-亚安乡、东巧-纳木错主要化探指标(总吸附烃、蚀变碳酸盐、热释汞等)的浓度特征、剖面分布特征及其烃类成因,并评价了羌塘、比如盆地各区段的含油气性,为该区油气勘探和预测提供参考.索县亚安乡-巴青县杂冬、安多县捷查-当雄剖面总吸附烃浓度高(平均分别为312.64μL·kg-1,164.36μL·kg-1),蚀变碳酸盐浓度较低(平均分别为0.11%,0.56%),热释汞含量较高(平均分别为13.09×10-9,1.94×10-9).化探结果较真实地反映地下油气信息,主要为石油伴生气和过成熟裂解气.羌塘盆地捷查-查仁鹿玛、下马押耳桶-索巴区为含油气最有利区段,鄂口-杂冬为含油气较有利区段;比如盆地纳木错、兹各塘错-东巧区段为含油气有利区段,江错-那顶错、亚安乡-押耳桶为含油气较有利区段.
The Qinghai-Tibet Plateau is still the only area that has not been large-scale oil and gas exploration in our country because of the complicated geological structure and poor natural geography environment, and the petroleum geology research is very difficult. Based on the actual exploration data and experimental data, the major geochemical indicators (total adsorbed hydrocarbons, altered carbonates, pyrolysis mercury Etc.), the distribution characteristics of the profiles and hydrocarbon genesis, and evaluated the hydrocarbon-bearing properties of Qiangtang, such as the various sections of the basin, to provide references for the exploration and prediction of oil and gas in this area. The concentrations of total adsorbed hydrocarbons in the Jiecha-Dangxiong section of winter and Anxian sections were high (average 312.64μL · kg-1,164.36μL · kg-1, respectively), while the concentrations of altered carbonate were lower (average 0.11% and 0.56% ), And pyrohydrin (13.09 × 10-9 and 1.94 × 10-9, respectively) .The results of geochemical exploration more accurately reflect the information of underground oil and gas, mainly oil-associated gas and over-mature pyrolysis gas.The Qiangtang basin Jiecha - Charen Luma, under the barrel Bo bar - Soho area containing The most favorable oil and gas zone, Hubei Province, Hubei Province, Hebei Province, Hubei Province, Hubei Province, Hubei Province, Hubei Province, Hubei Province, Hubei Province, Hubei Province, The ear bucket is the more favorable oil and gas sector.