Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Ther...Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Therese Esperdy,who heads Banking for Asia Pacific Corporate&Investment Bank at JP Morgan.The bond offering issued by CNOOC and Sinopec in the autumn of 2013 will set China in the global arena with full benefit rights as a prime player on world financial markets.展开更多
Recycling reinjection of CO_(2)captured and purified from the produced gas of CO_(2)flooding can not only enhance oil recovery,but also realize the geological storage of CO_(2),so as to provide good social and economi...Recycling reinjection of CO_(2)captured and purified from the produced gas of CO_(2)flooding can not only enhance oil recovery,but also realize the geological storage of CO_(2),so as to provide good social and economic benefit.With the operation and advancement of CO_(2)flooding development mode,one single CO_(2)capture and purification process can hardly deal with the yearly increase and large-scale variation of CO_(2)content in the produced gas.In order to provide support for the promotion of CO_(2)-EOR technology oil and gas fields,to this end,this paper puts forward four schemes of multi-method CO_(2)capture and purification process.It includes two-stage hydramine method,one-stage membrane separation+one-stage hydramine method,two-stage membrane separation+one-stage hydramine method,one-stage membrane separation+two-stage hydramine method.And based on the working condition data of CO_(2)flooding in one certain oilfield,simulation was carried out by using HYSYS software.In addition,the enrichment degree of the CO_(2)captured and purified by means of different schemes and its energy consumption and economy were analyzed mainly.And the following research results were obtained.First,when the CO_(2)concentration of the produced gas is low,it is necessary to put the two-stage alcohol amine circulation process into production firstly to realize the deacidification of natural gas while purchasing some pure CO_(2)to mix at a certain proportion,so as to reach the required CO_(2)purity of reinjected gas.Second,as the CO_(2)concentration of the produced gas increases,it is better to use the membrane separation technology before the two-stage alcohol amine circulation process,so that the enriched and purified gas can reach the required CO_(2)purity of direction reinjection.In conclusion,the research results can provide engineering practical guidance for the formulation of the scheme to enrich and purify CO_(2)from the produced gas of CO_(2)flooding.展开更多
文摘Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Therese Esperdy,who heads Banking for Asia Pacific Corporate&Investment Bank at JP Morgan.The bond offering issued by CNOOC and Sinopec in the autumn of 2013 will set China in the global arena with full benefit rights as a prime player on world financial markets.
基金supported by the National Major Science and Technology Project“Whole-Development-Cycle Gathering and Processing Technology for MultiGas Commingled Production”(No.2016ZX05066005-001)the Scientific Research Fund of China University of Petroleum(Beijing)“Study on the Intelligent Operation and Control of Natural Gas Pipeline Network Based on Big Data”(No.2462020YXZZ045).
文摘Recycling reinjection of CO_(2)captured and purified from the produced gas of CO_(2)flooding can not only enhance oil recovery,but also realize the geological storage of CO_(2),so as to provide good social and economic benefit.With the operation and advancement of CO_(2)flooding development mode,one single CO_(2)capture and purification process can hardly deal with the yearly increase and large-scale variation of CO_(2)content in the produced gas.In order to provide support for the promotion of CO_(2)-EOR technology oil and gas fields,to this end,this paper puts forward four schemes of multi-method CO_(2)capture and purification process.It includes two-stage hydramine method,one-stage membrane separation+one-stage hydramine method,two-stage membrane separation+one-stage hydramine method,one-stage membrane separation+two-stage hydramine method.And based on the working condition data of CO_(2)flooding in one certain oilfield,simulation was carried out by using HYSYS software.In addition,the enrichment degree of the CO_(2)captured and purified by means of different schemes and its energy consumption and economy were analyzed mainly.And the following research results were obtained.First,when the CO_(2)concentration of the produced gas is low,it is necessary to put the two-stage alcohol amine circulation process into production firstly to realize the deacidification of natural gas while purchasing some pure CO_(2)to mix at a certain proportion,so as to reach the required CO_(2)purity of reinjected gas.Second,as the CO_(2)concentration of the produced gas increases,it is better to use the membrane separation technology before the two-stage alcohol amine circulation process,so that the enriched and purified gas can reach the required CO_(2)purity of direction reinjection.In conclusion,the research results can provide engineering practical guidance for the formulation of the scheme to enrich and purify CO_(2)from the produced gas of CO_(2)flooding.
