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1.
2.
This paper considers the principles of deciphering basin-scale hydrocarbon migration patterns using the geochemical information which is present in trapped petroleum. Petroleum accumulations in subsiding basins can be thought of as "data archives" within which stored information can help us to understand aspects of hydrocarbon formation and migration. This information can impart a time-resolved picture of hydrocarbon migration in a basin in response to processes associated with progressive burial, particularly in the context of the occurrence and periodic activity of faults.
This review, which includes a series of tentative models of migration-related processes in the extensional Halten Terrace area, offshore mid-Norway, illustrates how we can use information from the migrating mobile hydrocarbon phase to improve our knowledge of the static geological system. Of particular importance is the role of sub-seismic heterogeneities and faults in controlling migration processes. We focus on how the secondary migration process can be enhanced in a multi-source rock basin such as the Halten Terrace, thereby increasing prospectivity. 相似文献
This review, which includes a series of tentative models of migration-related processes in the extensional Halten Terrace area, offshore mid-Norway, illustrates how we can use information from the migrating mobile hydrocarbon phase to improve our knowledge of the static geological system. Of particular importance is the role of sub-seismic heterogeneities and faults in controlling migration processes. We focus on how the secondary migration process can be enhanced in a multi-source rock basin such as the Halten Terrace, thereby increasing prospectivity. 相似文献
3.
We consider the Mayer optimal control problem with dynamics given by a nonconvex differential inclusion, whose trajectories are constrained to a given set and we obtain a relation between the costate function that appears in the maximum principle and the value function. This relation extends the known conditions existing in the literature for unconstrained problems to those for problems under state constraints. 相似文献
4.
This paper considers the principles of algorithmic and software implementation of the software system NADRA 3D designed to
analyze processes in three-dimensional multicomponent soil media. The principles of operation of NADRA 3D are described.
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Translated from Kibernetika i Sistemnyi Analiz, No. 6, pp. 157–174, November–December 2006. 相似文献
5.
K. P. Balan 《Journal of Failure Analysis and Prevention》2002,2(3):71-74
Wire ropes, pulleys, counterweights, and connecting systems are used for auto tensioning of contact wires of electric railways.
A wire rope in one such auto tensioning system suffered premature failure. Failure investigation revealed fatigue cracks initiating
at nonmetallic inclusions near the surface of individual wire strands in the rope. The inclusions were identified as Al-Ca-Ti
silicates in a large number of stringers, and some oxide and nitride inclusions were also found. The wire used in the rope
did not conform to the composition specified for AISI 316 grade steel, nor did it satisfy the minimum tensile strength requirements.
Failure of the wire rope was found to be due to fatigue; however, the ultimate fracture of the rope was the result of overload
that occurred after fatigue failure had reduced the number of wire strands supporting the load. 相似文献
6.
提出了一种新的铝液夹杂物快速检测方法。导出了该法的检测原理方程。分析并试验研究了影响检测重复性和分辨率的因素。试验选择了较好的检测参数,并获得了较好的检测结果。 相似文献
7.
非金属夹杂物对硬线盘条拉拔性能的影响及其工艺控制 总被引:3,自引:0,他引:3
李秀清 《冶金标准化与质量》2003,41(6):9-10
分析了非金属夹杂物对硬线盘条拉拔性能的影响及其来源 ,通过考察分析冶炼、浇注生产工艺针对非金属夹杂物含量的影响 ,提出了避免或减少非金属夹杂物含量的工艺控制方法。 相似文献
8.
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10.
非金属夹杂物的数量、分布、尺寸和化学成分对钢的性能有直接影响。通过控制这些夹杂物的尺寸和化学成分可以生产出优质产品。区分夹杂物的性质和控制夹杂物的形成对钢的清洁度十分重要。通过检验非金属夹杂物的化学成分可以预测夹杂物在钢中的性能。为了研究夹杂物的化学成分、尺寸和分布,某钢厂在二次精炼和连铸阶段采集了低碳铝和硅镇静钢的试样。试样用扫描电子显微镜(SEM)采用EDS系统进行分析。通过分析结果可以判定夹杂物的性质,分析精炼过程对减少夹杂数量和减小比表面积的效果。还可以确定处理后残留的夹杂对钢的性能和连铸过程(浸入式水口的堵塞)的影响大小。 相似文献