The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation backgroun...The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation background and strong tectonic activity have led to the simultaneous production of heavy oil and light oil from multi-layer in the area,which makes it very difficult to identify oil origins,presently,the hot debate on the oil origins needs to be clarified.In this paper,due to the selective consumption of different types of compounds in crude oils by severe and intense biodegradation,the commonly used oilsource correlation tools are ineffective or may produce misleading results,this study adopted a biomarker recovery method based on the principle of mass conservation that uses the sum of the mass of the residual biomarkers and their corresponding biodegradation products to obtain the mass of the original biomarkers,improving the reliability of oil origins determination.Based on the nature and occurrence of crude oils,the investigated oils are subdivided into three types,Group A,Group B and Group C.Group A,light oils occurred mainly in lower structure Neogene Shawan Formation in the western Chepaizi Uplift,while Group B,heavy oils occurred mainly in higher structure Neogene Shawan Formation in the western Chepaizi Uplift.The two types of crude oils may come from the mixed source of Jurassic Badaowan Formation source rocks(J_(1)b)and Paleogene Anjihaihe Formation source rocks(E_(2-3)a)in the Sikeshu Sag,and Jurassic Badaowan Formation source rocks(J_(1)b)are the main source of crude oils.Group C,heavy oils occurred mainly in Neogene Shawan Formation in the eastern Chepaizi Uplift,showing good correlation with the Permian(P_(1)f and P_(2)w)source rocks in the Shawan Sag.At the same time,by combining stable carbon isotope and parameters related to triaromatic steroids,the accuracy of the oilsource correlation results by biomarker recovery method was further verified.展开更多
In recent years, based on the rapid development of our country's social economy, the utilization of geological and mineral resources is also increasing, and its mining will directly affect the sustainable developm...In recent years, based on the rapid development of our country's social economy, the utilization of geological and mineral resources is also increasing, and its mining will directly affect the sustainable development of our country's economic construction, so in order to meet the market demand, geological exploration technology needs to keep pace with the times, and constantly carry out reform and optimization. In the actual mining work, the application of geological exploration technology can greatly improve its work efficiency. However, its safety cannot be ignored, it will directly affect the development of geological exploration. All along, our country has abundant mineral resources, which can effectively promote the improvement of our country's social and economic level. Mineral resources are non-renewable energy, so the best exploration technology should be used in the mining and use of mineral resources, so as to achieve the purpose of orderly development of the whole work.展开更多
20162863 Liu Tianle(Engineering Research Center of Rock-Soil Drilling and Excavation and Protection,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Li Lixia A New Drilling Fluid for Drilling ...20162863 Liu Tianle(Engineering Research Center of Rock-Soil Drilling and Excavation and Protection,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Li Lixia A New Drilling Fluid for Drilling in Marine Gas Hydrate Bearing Sediments(Earth Science,ISSN1000-2383,CN42-1233/P,40(11),2015,p.1913-展开更多
基金co-funded by the National Natural Science Foundation of China(42372160,42072172)。
文摘The Neogene Shawan Formation in the Chepaizi Uplift of the Junggar Basin(NW China)has obtained high oil flow,demonstrating a good potential for oil and gas exploration.The multi-source hydrocarbon generation background and strong tectonic activity have led to the simultaneous production of heavy oil and light oil from multi-layer in the area,which makes it very difficult to identify oil origins,presently,the hot debate on the oil origins needs to be clarified.In this paper,due to the selective consumption of different types of compounds in crude oils by severe and intense biodegradation,the commonly used oilsource correlation tools are ineffective or may produce misleading results,this study adopted a biomarker recovery method based on the principle of mass conservation that uses the sum of the mass of the residual biomarkers and their corresponding biodegradation products to obtain the mass of the original biomarkers,improving the reliability of oil origins determination.Based on the nature and occurrence of crude oils,the investigated oils are subdivided into three types,Group A,Group B and Group C.Group A,light oils occurred mainly in lower structure Neogene Shawan Formation in the western Chepaizi Uplift,while Group B,heavy oils occurred mainly in higher structure Neogene Shawan Formation in the western Chepaizi Uplift.The two types of crude oils may come from the mixed source of Jurassic Badaowan Formation source rocks(J_(1)b)and Paleogene Anjihaihe Formation source rocks(E_(2-3)a)in the Sikeshu Sag,and Jurassic Badaowan Formation source rocks(J_(1)b)are the main source of crude oils.Group C,heavy oils occurred mainly in Neogene Shawan Formation in the eastern Chepaizi Uplift,showing good correlation with the Permian(P_(1)f and P_(2)w)source rocks in the Shawan Sag.At the same time,by combining stable carbon isotope and parameters related to triaromatic steroids,the accuracy of the oilsource correlation results by biomarker recovery method was further verified.
文摘In recent years, based on the rapid development of our country's social economy, the utilization of geological and mineral resources is also increasing, and its mining will directly affect the sustainable development of our country's economic construction, so in order to meet the market demand, geological exploration technology needs to keep pace with the times, and constantly carry out reform and optimization. In the actual mining work, the application of geological exploration technology can greatly improve its work efficiency. However, its safety cannot be ignored, it will directly affect the development of geological exploration. All along, our country has abundant mineral resources, which can effectively promote the improvement of our country's social and economic level. Mineral resources are non-renewable energy, so the best exploration technology should be used in the mining and use of mineral resources, so as to achieve the purpose of orderly development of the whole work.
文摘20162863 Liu Tianle(Engineering Research Center of Rock-Soil Drilling and Excavation and Protection,Ministry of Education,China University of Geosciences,Wuhan 430074,China);Li Lixia A New Drilling Fluid for Drilling in Marine Gas Hydrate Bearing Sediments(Earth Science,ISSN1000-2383,CN42-1233/P,40(11),2015,p.1913-
