As several major new gas discoveries have been made recently in the Lower Cambrian Longwangmiao Fm reservoirs in the Leshan-Longnǚsi Palaeohigh of the Sichuan Basin,a super-huge gas reservoir group with multiple gas ...As several major new gas discoveries have been made recently in the Lower Cambrian Longwangmiao Fm reservoirs in the Leshan-Longnǚsi Palaeohigh of the Sichuan Basin,a super-huge gas reservoir group with multiple gas pay zones vertically and cluster reservoirs laterally is unfolding in the east segment of the palaeohigh.Study shows that the large-scale enrichment and accumulation of natural gas benefits from the good reservoir-forming conditions,including:(1)multiple sets of source rocks vertically,among which,the high-quality Lower Paleozoic source rocks are widespread,and have a hydrocarbon kitchen at the structural high of the Palaeohigh,providing favorable conditions for gas accumulation near the source;(2)three sets of good-quality reservoirs,namely,the porous-vuggy dolomite reservoirs of mound-shoal facies in the 2nd and 4th members of the Sinian Dengying Fm as well as the porous dolomite reservoirs of arene-shoal facies in the Lower Cambrian Longwangmiao Fm,are thick and wide in distribution;(3)structural,lithological and compound traps developed in the setting of large nose-like uplift provide favorable space for hydrocarbon accumulation.It is concluded that the inheritance development of the Palaeohigh and its favorable timing configuration with source rock evolution are critical factors for the extensive enrichment of gas in the Lower Cambrian Longwangmiao Fm reservoirs.The structural high of the Palaeohigh is the favorable area for gas accumulation.The inherited structural,stratigraphic and lithological traps are the favorable sites for gas enrichment.The areas where present structures and ancient structures overlap are the sweet-spots of gas accumulation.展开更多
This paper explores the development of China’s labor market by examining labor market integration, thescaleand scopeoflabormigration, and wagedetermination. Itfindsthatlabor marketdevelopmenthasmadedramaticprogress s...This paper explores the development of China’s labor market by examining labor market integration, thescaleand scopeoflabormigration, and wagedetermination. Itfindsthatlabor marketdevelopmenthasmadedramaticprogress since thereform, especiallysincethe1990s. There are stillsomeinstitutional barriersto labor market development. Itreveals somepolicy implications on how to develop thelabor marketand improvelabor market integration.展开更多
文摘As several major new gas discoveries have been made recently in the Lower Cambrian Longwangmiao Fm reservoirs in the Leshan-Longnǚsi Palaeohigh of the Sichuan Basin,a super-huge gas reservoir group with multiple gas pay zones vertically and cluster reservoirs laterally is unfolding in the east segment of the palaeohigh.Study shows that the large-scale enrichment and accumulation of natural gas benefits from the good reservoir-forming conditions,including:(1)multiple sets of source rocks vertically,among which,the high-quality Lower Paleozoic source rocks are widespread,and have a hydrocarbon kitchen at the structural high of the Palaeohigh,providing favorable conditions for gas accumulation near the source;(2)three sets of good-quality reservoirs,namely,the porous-vuggy dolomite reservoirs of mound-shoal facies in the 2nd and 4th members of the Sinian Dengying Fm as well as the porous dolomite reservoirs of arene-shoal facies in the Lower Cambrian Longwangmiao Fm,are thick and wide in distribution;(3)structural,lithological and compound traps developed in the setting of large nose-like uplift provide favorable space for hydrocarbon accumulation.It is concluded that the inheritance development of the Palaeohigh and its favorable timing configuration with source rock evolution are critical factors for the extensive enrichment of gas in the Lower Cambrian Longwangmiao Fm reservoirs.The structural high of the Palaeohigh is the favorable area for gas accumulation.The inherited structural,stratigraphic and lithological traps are the favorable sites for gas enrichment.The areas where present structures and ancient structures overlap are the sweet-spots of gas accumulation.
文摘This paper explores the development of China’s labor market by examining labor market integration, thescaleand scopeoflabormigration, and wagedetermination. Itfindsthatlabor marketdevelopmenthasmadedramaticprogress since thereform, especiallysincethe1990s. There are stillsomeinstitutional barriersto labor market development. Itreveals somepolicy implications on how to develop thelabor marketand improvelabor market integration.
