Residual coal exploitation and its impact on sustainable development of the coal industry in China

Although China owns large coal reserves, it now faces the problem of depletion of its coal resources in advance. The coal-based energy mix in China will not change in the short term, and a means of delaying the coal resources depletion is therefore urgently required. The residual coal was exploited first with a lower recovery percentage and was evaluated as commercially valuable damaged coal. This approach is in comparison to past evaluations when the residual coal was allocated as exploitation losses. Coal recovery rates, the calculation method of residual coal reserves and statistics of its mines in China were given. On this basis, a discussion concerning the impacts on the delay of China's coal depletion, development of coal exploitation and sustainable developments, as well as technologies and relevant policies, were presented. It is considered that the exploitation of residual coal can effectively delay China's coal depletion, inhibit the construction of new mines, redress the imbalance between supply and demand of coal in eastern China, improve the mining area environment and guarantee social stability. The Chinese government supports the exploitation technologies of residual coal. Hence, exploiting residual coal is of considerable importance in sustainable development of the coal industry in China.     

2000年以来中国大气田勘探开发特征

截至2013年底,中国共探明51个大气田,天然气储量持续高峰增长、产量快速上升、管网建设蓬勃发展、市场需求旺盛。总结2000年以来中国大气田勘探、开发的特征,可以为发现更多的大气田提供借鉴和思路。中国大气田勘探特征:仅发现于沉积面积大于10×10~4km~2的盆地,已在9个盆地中探明了大气田;2005年前大气田探明天然气总储量较少,为2.708588×10~(12)m~3,之后则较大,2013年底探明天然气总储量为8.168377×10~(12)m~3;大气田储量丰度最大的和最小的相差超过86倍,储量丰度最大的克拉2气田为59.05×10~8m~3/km~2,最小的靖边气田为0.684×10~8m~3/km~2;深度介于3000~4500m的大气田探明储量比例大,占总储量的46.11%。中国大气田开发特征:大气田的产量是中国天然气工业的支柱,2013年大气田总产量达922.72×10~8m~3,占全国天然气总产量的76.3%;大气田的产量中以煤成气为主,2013年大气田中煤成气总产量为710.13×10~8m~3,煤成气占全国大气田总产量的77.0%;关键大气田(苏里格、靖边、大牛地、普光、克拉2等气田)的产量是支撑产气大国的基石。     

无轨设备备件管理及其储备量的计算方法探讨

如何对矿山无轨设备备件进行细化管理,以达到效率高、投资少、费用省的管理目标,是矿山生产中十分重要的问题。本文针对无轨设备备件量化管理应考虑的因素进行了探讨,提出了自己的看法。     

地质统计学及其在某铜矿山储量计算中的应用

首先论述了地质统计学的基本理论及应用其计算地质储量的方法步骤；然后以计算机为工具，运用地质统计学对某铜矿山铜金属储量进行了分析计算，并将计算结果与真实储量进行了对比分析。通过对比分析，认为运用地质统计学计算储量具有先进性及实用性。     

我国耐火材料矿物资源状况与发展问题的讨论

介绍了我国耐火资源的现状和开发利用状况,包括我国耐火资源储量分析、耐火资源的行业配置、耐火矿物资源消耗状况以及耐火矿物资源利用情况。对合理利用耐火资源,走可持续发展道路提出建议;通过改进原料产品生产工艺,提高耐火矿物资源的利用效能;合理使用耐火材料,降低耐火资源的消耗。     

基于3DMine的贾家堡铁矿储量估算研究

在贾家堡地质数据库的基础上,利用3DMine矿业软件进行样品组合,并对组合样进行地质统计学分析;根据分析后的矿体品位空间变异情况,运用距离平方反比法及普通克里格法对块体模型进行品位估值,并分别生成矿体资源量报告,比较了两者的储量计算结果,并探讨了在资源管理及采矿设计中的应用。     

试探经济因素在SEC储量评估中的作用

中国的石油公司上市成功后 ,储量观念正在由地质储量向剩余经济可采储量转变 ,其中最重要的是强调经济因素对SEC储量评估的影响。在总结净现值法评估储量的基本流程、所需经济参数基础上 ,探讨了经济极限产量、递减规律、油价、成本和投资等经济因素对储量评估的影响 ,认为油气田的自身产量递减规律决定了其未来剩余技术可采储量 ,而经济因素决定了剩余经济可采储量 ,其中油价对剩余经济可采储量影响最为明显     

地质统计学在北衙金矿的应用

简述了地质统计学的由来及使用原理,建立了北衙金矿万硐山矿段地质数据库,模拟了金元素变异函数,建立了矿段的三维模型和品位模型,用克立格法估算了储量,并进行了地质解译,探讨了基于该模型之上的实际应用。     

Economic geology value of oil shale deposits: Ethiopia (Tigray) and Jordan

Oil shale is an organic-rich, fine-grained sedimentary rock, containing kerogen, from which liquid hydrocarbons (called shale oil) can be produced. The oil shale deposits in the Tigray region are found in the northern parts of Ethiopia, Eastern Africa. They are of Upper Paleozoic in age, existing as remnants of the Cretaceous erosion period, underlain by tillites and overlain by sandstones. They were formed during the glacial retreat followed by marine deposition of shales in a basin created by the enormous load of the glaciers. The Ethiopian-Tigray oil shale deposits cover an area extending over approximately 30 km², with an average mineable bed-thickness of 55 m, showing on the upper part inter-beds and laminations of shaley limestones. The oil shale resources in this region are estimated to be approximately 4 billion tonnes. The exploitation of the Ethiopian-Tigray oil shale deposits is an excellent alternative to fulfill the fuel and other petroleum products’ demand of Ethiopia. This study sheds light on the oil shale resources in the Ethiopian region of Tigray, as they are fairly investigated, regarding their geological characterization, and future strategies for their exploration and exploitation potential. In addition, the oil shale deposits in Jordan are also moderately investigated, as Jordan is considered a promising country for shale oil, taking into account that Jordan has no other hydrocarbon resources (such as crude oil and natural gas), unlike many other countries in the MENA (Middle East and North Africa) region, as MENA sets on “seas” of oil and natural gas. Furthermore, oil shale in the USA is also briefly investigated, as the USA is being the world’s largest country of oil shale resources and reserves. Also, some other issues related to the oil shale industry are investigated, such as economics, extraction technologies of shale oil, and the environmental impacts.     

杏树岗油田杏田一六面积西块油藏模拟研究

介绍了杏树岗油田－单方面 积西块油藏模拟研究,为了达到研究的目的,建立了规模较大,能反映多油同藏分层开采动态的油藏模型。研究中进行了动态数据评价,拟定了合理的历史拟合策略。并对注水量的修正和储量潜力进行了敏感性分析,最后对该区域的表外储层储量潜力,调整后的稳定产趋和压力恢复速度进行了研究。