Applied Mechanics and Materials Vol. 737

Abstract: For prolonging the campaign of hearth in a 1000 m3 Blast Furnace, a mathematical model is developed to compute the erosion situation of the hearth. With the model, the position of erosion line is calculated from Sep. 2011 to Apr. 2013. It is found that the dead-man zone of the hearth is eroded, and that upper the iron notch level is covered by slag.

Abstract: The Proved, Probable and Possible Reserves of a gas reservoir in Sichuan Basin is more than 400 billion cubic meter. It has very good prospects for development. In this paper, a preliminary discussion was taken on countermeasures of gas reservoir basing on analysis of the main geological properties and challenges of the development of the gas reservoir. This study proposed to strengthen the comprehensive geological study of the gas reservoir and resource base to increase the single well productivity and decrease the cost. The existing achievements must be combined with self-dependent innovation to form the right technologies of development quickly by investigation study and pilot test to help the gas reservoir develop fast, efficiently and safely.

Abstract: Experimental studies show that under special conditions, oils in corrosion environment have some inhibiting effect on CO₂ corrosion behavior of gathering pipelines. Oil wetting and corrosion product film are the great difference in existent rate prediction models of sweet corrosion. The progress of CO₂ corrosion rate prediction including empirical model, semi-empirical model, mechanistic model and artificial neural networks model considering the impact of oil in recent years are introduced in detail, the present problems and further research directions are also discussed.

Abstract: Owing to the growing gap of natural gas between supply and demand in China, the unconventional natural gas, including coal-bed methane (CBM) and shale gas, has been considered as strategic energy sources. An assessment by China’s Ministry of Land and Resources (MLR) announced that China has potentially resources of 36.7 trillion cubic meters of CBM and 25 trillion cubic meters of shale gas, larger than those of the U.S. Controversial views about their commercial prospects and priorities in order are available. This research aims at exploring which is more economically viable and worth the priority. A cost-benefit analysis (CBA) based on average single well data is employed to carry out a comparative analysis between two typical fields, the coal-bed methane (CBM) fields in the Qinshui basin and the shale gas fields in Sichuan basin. The net present value (NPV), the internal rate of return (IRR) and the payback period are used as indicators in this analysis. The results indicate that CBM is superior to shale gas in viability under the current technological and economic conditions, and the future of the CBM industry is clearer than that of the shale gas industry, but the latter is still promising if the drilling costs can be reduced significantly with technical progress. We suggest that the CBM industry should be given the priority to, and the policy for shale gas should focus on promoting technical innovations.

Abstract: Alberta, known as the “Energy Province”, has abundant natural resources with the largest reserve among all other provinces in Canada. The mining rights in Alberta are mainly taken charge by the Alberta Energy and separated from land rights. The rights are divided into three forms-Permit, leases and Licence, and can be divided further into different kinds according to different mineral resources. The electronic information management mode is applied to the management of mineral rights, which offers a significant reference to the category of mineral rights, the management of energy minerals and the acceleration of mineral rights electronic computerization in our country.

Abstract:

Coalbed methane (CBM) which is a kind of efficient and clean unconventional natural gas will be the alternative energy in the future. The studying degree of predecessor is low to the pore-fracture structures of coal reservoir in Hancheng Mining area, Ordos Basin, China. It has been researched with some tests and the results are as follows: micropore is more, specific surface area is larger, throat radius is lesser, permeability is low, but the pore - fracture is development, phenomenon of mineral filling pore - fracture is widespread, sorting features of throat radius is better. From the point of test results, physical property of coal reservoir in the study area is good,which is suitable for the exploration and development of coalbed methane resources.

Abstract: Stratal Slicing technology is a common method of 3D seismic data interpretation, studying its physiognomy and lithologic characteristics by acquiring variation characteristics of the seismic attributes on the plane. The purpose stratum in the study area is wedged, it is more proper to use stratal slicing than time slicing and horizontal slice. Based on stratal slicing technology, this paper characterizes the Akshabulak formation sedimentary system in block D of South Turgai Basin, Kazakstan. The results show that, making clear of the seismic attributes on behalf of the depositional facies combine with stratal slicing and regional depositional environment can judge that the block D develops fluvial deposit and delta deposit, Another finding is that by using stratal slicing can characterize channel‘s boundary, plane geometry and discontinuity accurately.

Abstract: In order to provide essential information for enterprises to exploit the iron ore of Yunnan province in China, properties of the ore were analyzed. Experiments of the best grinding fineness analysis and magnetic separation current were conducted. The result show that the ore is martite; when the grinding fineness content below 74um is 95%, and magnetic separation current is 10A (0.8T), iron concentrate with a grade of 65.40% and a recovery of 90.49% can be obtained. Sulfur and phosphorus content in the iron concentrate is 0.057% and 0.011%, respectively.

Abstract: The collapse column is widely developed and distributed in North China coalfield, has been a threat for coal mine production safety. According to the existing collapse columns in pansan mine, using the combination with geology analyzing and geophysical exploration technology, the cause and development regularity of the collapse columns is discussed in a way of palaeogeographic and palaeoenvironment, the inner filling material features of the collapse columns in the coalfield are introduced, The watery features of collapse columns are studied. The results show that collapse columns have a law of zonation in the horizontal and vertical , and have a certain subsiding distance, collapse column widths ranging periphery have the peripheral edge of the impact zone and transition zone, In the collapse column, the cementation degree is poor at the top, highly compressed at the middle and relatively poor in the bottom. The top and middle sections are less in water bearing, the rich water in the bottom was caused by the vertically leakage recharge from Ordovician limestone in the deep. The research results provide scientific basis for the prevention of collapse column in coal mine.

Abstract: Based on the data of core, thin section, scanning electron microscopy and geochemical analysis.etc, from the dissolution phenomenon of laumontite in the carboniferous volcanic reservoirs of Santanghu Basin,the exploratory study of alkaline diagenesis and the formation mechanism in volcanic reservoir was carried out.