The large reserves ofoil are disposed in zones of permafrost in shelf and continental fields. In Europe the subarctic and arctic tundra are abundant only in Nenetsky autonomous area and in the north-east of the republ...The large reserves ofoil are disposed in zones of permafrost in shelf and continental fields. In Europe the subarctic and arctic tundra are abundant only in Nenetsky autonomous area and in the north-east of the republic of Komi. Oil and gas production activity has threatened richest biological resources and health of the population of the region. A singularity of petroliferous fields of the north of Russia is the existence of the thick strata of permafrost. On top of them different heat-insulating overlying layers （snow, biogenic covers） reside. State and dynamics of permafrost cause progressing dangerous exogenic geoecological processes, which are exhibited completely. State of permafrost is instituted by exchange of heat in near-surface strata of a geological section. During the development of oil fields there is a disturbance of a temperature schedule of permafrost. For estimation of technical attack the analytical computational method of influence of the different factors on value of annual heat exchange and prediction of geocryological conditions is proposed. It is shown, that such dangerous phenomena as degradation of permafrost and thermokarst would develop in the first place, which would cause the destruction of natural ecosystems.展开更多
页岩孔隙特征是页岩储层研究的重要内容.基于沁水盆地S-1井太原组、山西组页岩样品,利用氩离子抛光扫描电镜(argon ion polishing scanning electron microscope,Ar-SEM)对孔隙形态特征进行分析,并运用孔裂隙特征分析系统软件(pores and...页岩孔隙特征是页岩储层研究的重要内容.基于沁水盆地S-1井太原组、山西组页岩样品,利用氩离子抛光扫描电镜(argon ion polishing scanning electron microscope,Ar-SEM)对孔隙形态特征进行分析,并运用孔裂隙特征分析系统软件(pores and cracks analysis system,PCAS)对Ar-SEM照片中孔隙进行定量表征.结果显示样品孔隙以有机质孔、粒间孔、粒内孔为主,孔径多集中在<100nm,占比72.70%~82.13%,其中介孔占比39.76%~45.48%.随深度的增加孔隙结构越来越复杂,且越深的层位,随孔隙面积的增大其结构复杂程度增加的越缓慢.孔隙结构复杂程度在Ro,max=2附近存在拐点,高成熟阶段,随成熟度的增加孔隙结构复杂程度越来越低,且孔隙面积越大其结构复杂程度越低;过成熟阶段,随成熟度的增加孔隙结构复杂程度越来越高,且孔隙面积越大其结构复杂程度越高.展开更多
文摘The large reserves ofoil are disposed in zones of permafrost in shelf and continental fields. In Europe the subarctic and arctic tundra are abundant only in Nenetsky autonomous area and in the north-east of the republic of Komi. Oil and gas production activity has threatened richest biological resources and health of the population of the region. A singularity of petroliferous fields of the north of Russia is the existence of the thick strata of permafrost. On top of them different heat-insulating overlying layers （snow, biogenic covers） reside. State and dynamics of permafrost cause progressing dangerous exogenic geoecological processes, which are exhibited completely. State of permafrost is instituted by exchange of heat in near-surface strata of a geological section. During the development of oil fields there is a disturbance of a temperature schedule of permafrost. For estimation of technical attack the analytical computational method of influence of the different factors on value of annual heat exchange and prediction of geocryological conditions is proposed. It is shown, that such dangerous phenomena as degradation of permafrost and thermokarst would develop in the first place, which would cause the destruction of natural ecosystems.
文摘页岩孔隙特征是页岩储层研究的重要内容.基于沁水盆地S-1井太原组、山西组页岩样品,利用氩离子抛光扫描电镜(argon ion polishing scanning electron microscope,Ar-SEM)对孔隙形态特征进行分析,并运用孔裂隙特征分析系统软件(pores and cracks analysis system,PCAS)对Ar-SEM照片中孔隙进行定量表征.结果显示样品孔隙以有机质孔、粒间孔、粒内孔为主,孔径多集中在<100nm,占比72.70%~82.13%,其中介孔占比39.76%~45.48%.随深度的增加孔隙结构越来越复杂,且越深的层位,随孔隙面积的增大其结构复杂程度增加的越缓慢.孔隙结构复杂程度在Ro,max=2附近存在拐点,高成熟阶段,随成熟度的增加孔隙结构复杂程度越来越低,且孔隙面积越大其结构复杂程度越低;过成熟阶段,随成熟度的增加孔隙结构复杂程度越来越高,且孔隙面积越大其结构复杂程度越高.
