Multiple types of oil inclusions with different fluorescence colors have been detected in the northern Dongpu depression.Recent evidences show that these inclusions may have been trapped simultaneously or during a ver...Multiple types of oil inclusions with different fluorescence colors have been detected in the northern Dongpu depression.Recent evidences show that these inclusions may have been trapped simultaneously or during a very short period.Therefore,whether these oils were mixed before trapping is unknown.In this study,we analyzed the petrography and fluorescence spectral characteristics of oil inclusions in the Wenliu uplift in the northern Dongpu depression,and assessed the data with the oil mixing ratio curve obtained in the previous experiment.The results show that there are three types of oil inclusions(type I,type II and type III)with yellow,green and blue fluorescence colors,corresponding to low-mature,medium-mature and high-mature oil,respectively.The"pure"oil inclusions,do exist in type II and type III group of oil inclusions,showing the medium-mature oil was generated from the source rock rather than being formed by the mixture of high-mature and low-mature end oils.Most of the oil inclusions are mixtures of high-mature and medium-mature end oils from the sub-sags to the Wenliu uplift,the mixing degree increases to close to 50%.The oil between the Qianliyuan sub-sag and the Wenliu uplift was mainly mixed by medium mature oils,whereas the oil between the Liutun sub-sag and the Wenliu uplift was mainly mixed by high mature oil.展开更多
The Dongpu depression,like other depressions in the Bohai Bay Basin,is characterized by overpressure,however,the published studies have not clearly given the overpressure formation mechanism and paleo-pressure evoluti...The Dongpu depression,like other depressions in the Bohai Bay Basin,is characterized by overpressure,however,the published studies have not clearly given the overpressure formation mechanism and paleo-pressure evolution history in the Dongpu depression.In addition,the current researches are mainly focused on the northern Dongpu depression,while rare investigation has been conducted in the southern part.In this context,it is urgent to explore the comprehensive overpressure evolution and formation mechanism in the Dongpu depression in academic and industrial fields.This paper provided a systematic analysis of fluid inclusions,including fluid inclusion petrography,microthermometry,vapor phase filling degree measurement and PVT-x modeling.By using homogenization temperature-burial history projection,the trapping time of the oil inclusions are determined.Four pressure evolution stages are identified in both the northern and the southern Dongpu depression.The results indicate that the pressure accumulation stage is derived by disequilibrium compaction and hydrocarbon generation in the northern part because of the salt rock distribution,while the stage is only derived by hydrocarbon generation in the southern part because of no salt rock distribution.The pressure release stages are mainly caused by the tectonic uplifting movements at the end of Dongying and Minghuazhen Formation.The overpressure in most areas in the northern part has been preserved till now,which is considered as a result of the good plasticity and sealing ability of salt rock that prevent the pressure leakage by smearing on the fault.Areas without salt rock distribution show normal pressure,which means the salt rock is an important factor that contributes to the overpressure preservation.However,there are exceptions that in Baimiao and Qiaokou,the overpressure still exists even without salt rock distribution,which is due to fault closure.展开更多
China, as an important source country in the global value chain, especially in the East Asian production networks, has exerted significant influence on Sino-Japanese trade fluctuations. This paper explores the real fa...China, as an important source country in the global value chain, especially in the East Asian production networks, has exerted significant influence on Sino-Japanese trade fluctuations. This paper explores the real factors that lead to the fluctuations in Sino- Japanese trade. Using the Hodrick-Prescott filter technique and OECD-WTO Statistics on Trade in Value Added from 1995 to 2011, the impact of the changing comparative advantage between the two countries is also examined. The empirical results indicate that determinants of the fluctuations in Sino-Japapese trade include changing comparative advantages, the volatility of the real exchange rate and quite a few external shocks. Some policy suggestions are put forward in regards to the stability of trade between the two countries.展开更多
This paper aims to examine the role of the subway network,a typical form of transportation within urban areas,on innovation and knowledge diffusion.Applying the differece-in-diferences strategy and spatial analysis,we...This paper aims to examine the role of the subway network,a typical form of transportation within urban areas,on innovation and knowledge diffusion.Applying the differece-in-diferences strategy and spatial analysis,we used 1,332 newly opened stations in China from 2000 to 2013 as a quasi-experiment to identify the local effects of subway expansions.Results suggested that by reducing communication costs and increasing opportunities for interaction,subway construction would bring growth at the district level.Knowledge dissemination would become more active after new stations open.Micro-level results showed that these positive impacts were highly localized;that is,only those firms located within lkm around stations benefited from the new subway.Moreover,new subways facilitated the flow of knowledge from station to station and assisted.firms in acquiring knowledge from more distant technology clusters conveniently.展开更多
基金the National Natural Science Foundation of China(No.41730421)the Major Science and Technology Project of SINOPEC during the 13th Five-Year Plan period(No.ZDP1705)。
文摘Multiple types of oil inclusions with different fluorescence colors have been detected in the northern Dongpu depression.Recent evidences show that these inclusions may have been trapped simultaneously or during a very short period.Therefore,whether these oils were mixed before trapping is unknown.In this study,we analyzed the petrography and fluorescence spectral characteristics of oil inclusions in the Wenliu uplift in the northern Dongpu depression,and assessed the data with the oil mixing ratio curve obtained in the previous experiment.The results show that there are three types of oil inclusions(type I,type II and type III)with yellow,green and blue fluorescence colors,corresponding to low-mature,medium-mature and high-mature oil,respectively.The"pure"oil inclusions,do exist in type II and type III group of oil inclusions,showing the medium-mature oil was generated from the source rock rather than being formed by the mixture of high-mature and low-mature end oils.Most of the oil inclusions are mixtures of high-mature and medium-mature end oils from the sub-sags to the Wenliu uplift,the mixing degree increases to close to 50%.The oil between the Qianliyuan sub-sag and the Wenliu uplift was mainly mixed by medium mature oils,whereas the oil between the Liutun sub-sag and the Wenliu uplift was mainly mixed by high mature oil.
基金supported by the National Natural Science Foundation of China(No.41730421)Major Science and Technology Project of SINOPEC during the 13th Five-Year Plan Period(No.ZDP1705)。
文摘The Dongpu depression,like other depressions in the Bohai Bay Basin,is characterized by overpressure,however,the published studies have not clearly given the overpressure formation mechanism and paleo-pressure evolution history in the Dongpu depression.In addition,the current researches are mainly focused on the northern Dongpu depression,while rare investigation has been conducted in the southern part.In this context,it is urgent to explore the comprehensive overpressure evolution and formation mechanism in the Dongpu depression in academic and industrial fields.This paper provided a systematic analysis of fluid inclusions,including fluid inclusion petrography,microthermometry,vapor phase filling degree measurement and PVT-x modeling.By using homogenization temperature-burial history projection,the trapping time of the oil inclusions are determined.Four pressure evolution stages are identified in both the northern and the southern Dongpu depression.The results indicate that the pressure accumulation stage is derived by disequilibrium compaction and hydrocarbon generation in the northern part because of the salt rock distribution,while the stage is only derived by hydrocarbon generation in the southern part because of no salt rock distribution.The pressure release stages are mainly caused by the tectonic uplifting movements at the end of Dongying and Minghuazhen Formation.The overpressure in most areas in the northern part has been preserved till now,which is considered as a result of the good plasticity and sealing ability of salt rock that prevent the pressure leakage by smearing on the fault.Areas without salt rock distribution show normal pressure,which means the salt rock is an important factor that contributes to the overpressure preservation.However,there are exceptions that in Baimiao and Qiaokou,the overpressure still exists even without salt rock distribution,which is due to fault closure.
基金This research is supported by the Key Project of the National Social Science Foundation of China （Grant No. 15AJY001）, the National Natural Science Foundation of China （Grant No. 71203099） and the Jiangsu Provincial Social Science Foundation in China （Grant Nos. 14EYA002 and 15EYB008）.
文摘China, as an important source country in the global value chain, especially in the East Asian production networks, has exerted significant influence on Sino-Japanese trade fluctuations. This paper explores the real factors that lead to the fluctuations in Sino- Japanese trade. Using the Hodrick-Prescott filter technique and OECD-WTO Statistics on Trade in Value Added from 1995 to 2011, the impact of the changing comparative advantage between the two countries is also examined. The empirical results indicate that determinants of the fluctuations in Sino-Japapese trade include changing comparative advantages, the volatility of the real exchange rate and quite a few external shocks. Some policy suggestions are put forward in regards to the stability of trade between the two countries.
文摘This paper aims to examine the role of the subway network,a typical form of transportation within urban areas,on innovation and knowledge diffusion.Applying the differece-in-diferences strategy and spatial analysis,we used 1,332 newly opened stations in China from 2000 to 2013 as a quasi-experiment to identify the local effects of subway expansions.Results suggested that by reducing communication costs and increasing opportunities for interaction,subway construction would bring growth at the district level.Knowledge dissemination would become more active after new stations open.Micro-level results showed that these positive impacts were highly localized;that is,only those firms located within lkm around stations benefited from the new subway.Moreover,new subways facilitated the flow of knowledge from station to station and assisted.firms in acquiring knowledge from more distant technology clusters conveniently.
