工程经济分析在地下水系统规划中的应用     

谢新民 《吉林大学学报(地球科学版)》1991,(2)

阐述了在地下水系统规划研究中引进工程经济分析观点的重要性和迫切性;系统地介绍了工程经济分析的理论和方法,以喀什市地下水系统规划为例,探讨了工程经济分析在地下水系统规划中的应用。  相似文献   

Oil-generating coals of the San Juan Basin, New Mexico and Colorado, U.S.A.     

J.L. Clayton  D.D. Rice  G.E. Michael 《Organic Geochemistry》1991,17(6)

Coal beds of the Upper Cretaceous Fruitland Formation in the San Juan Basin of northwestern New Mexico and southwestern Colorado have significant liquid hydrocarbon generation potential as indicated by typical Rock-Eval Hydrogen Indexes in the range of 200–400 mg hydrocarbon/g organic carbon (type II and III organic matter). Small, non-commercial quantities of oil have been produced from the coal beds at several locations. The oils are characterized by high pristane/phytane (ca 4) and pristane/n-C₁₇ ratios (ca 1.2), abundant C₂₁₊ alkanes in the C₁₀₊ fraction with a slight predominance of odd carbon-numbered n-alkanes, abundant branched-chain alkanes in the C₁₅₊ region, and a predominance of methylcyclohexane in the C₄----C₁₀ fraction. The oils are indigenous to the Fruitland Formation coals and probably migrated at thermal maturities corresponding to vitrinite reflectance values in the range 0.7–0.8%. Although the oils found to date are not present in commercial amounts, these findings illustrate the potential of some coals to generate and expel oil under conditions of moderate thermal heating.  相似文献   

玉米气候适宜度动态模型的建立和应用   总被引：4，自引：0，他引：4  

王雪娥 《南京气象学院学报》1992,15(2):63-72

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提取油气田伽玛能谱弱异常方法研究     

王平  戴丽君 《吉林大学学报(地球科学版)》1992,(1)

1988年在任丘油田100km~2范围内进行地面伽玛能谱测量。为减小随机干扰,采用最小二乘圆滑、加权游动平均对原始数据进行处理。结果表明加权游动平均方法效果较好。为进一步突出找油信息。采用趋势分析、组合变量和聚类分析方法对数据进行处理,并在此基础上提出了以聚类分析为基础的航空伽玛能谱数据归一化方法。用该方法对航空能谱数据进行处理,测区内三个已知油田在归一化图上都有明显低值反映。其中位于高场中的低值异常在原始图上则很难辨别出来。  相似文献   

深层卤水单井可采资源量预测   总被引：1，自引：0，他引：1  

周训 《地球科学》1992,17(5):581-584

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石油与天然气定量评价的体积统计法（续）     

金之钧 《地质科技情报》1992,11(2):99-102

多元线性回归方法的可靠性如何呢?上述研究者以美国的二叠系盆地为评价对象,对该方法进行验证,所取得的结果是令人满意的,和其它方法所得的结果很接近。  相似文献   

热液烃的生成与深部油气藏   总被引：25，自引：1，他引：25  

张景廉  王先彬  曹正林 《地球科学进展》2000,15(5):545-552

热液烃不仅分布于洋底,在大陆也有广泛分布,实验表明:热液对碳酸盐岩和沉积有机质的作用均有油气生成;洋底火山岩流体包裹体、原油、有机质Pb、Sr、Nd同位素均表明地幔流体在油气生成中的作用。认识热液烃的存在对开拓深部油气藏的勘探有重要意义。  相似文献   

Land, sea and human effort: technical achievement and territorial engagement     

Joost H. J. Terwindt  Jan G. Groenendijk 《GeoJournal》1997,42(1):1-7

Land, Sea and Human Effort was the central theme of the 28th IGU Congress in The Hague, The Netherlands. This volume contains the key-note addresses highlighting this central theme. Three major issues regarding low-land coasts came to the fore: land-use, environmental quality and safeguarding of the land. An interesting question is whether the concentration of human activities in large urban nodes will continue, or that such nodes and hierarchies will no longer structure our world, because of the ever-increasing importance of all means of communication and transport, as indicated by Johnston. Functions may disperse to specialised environments. A similar specialisation may be encountered in e.g. the development of tourism in the coastal zone. As Gormsen has elucidated, tourism has over time extended in a sequence of spatial peripheries. Consequently, phases in development may be identified with a growing impact and participation of local tourism interwoven with international growth. The environmental quality of coastal zones is seriously under threat, due to ever-increasing population pressure and human exploitation. The major problems are pollution and the availability of good quality water. Oudshoorn explored the worlds resources of drinking water, indicating the great need for political awareness of this huge problem. Cross-sectoral planning is advocated by Oudshoorn, even if water management often trespasses international boundaries and the harmonisation of the planning strategies is mostly difficult. The environmental quality of the coastal zone is also affected by the exploitation of oil and gas resources. Odell demonstrates that the conditions for this exploitation in the North Sea are unique, especially because of the great impact of an international agreement on offshore exploitation. Planning in sea areas is becoming an issue of increasing importance as it has to cope with the many, often conflicting interests, such as shipping, fishery, mining, waste disposal in relation to environmental and ecological constraints. The safeguarding of the land against river floods and sea side storm surges under the threat of a rising sea level is another important issue in coastal low-lands. Callander reviews the present state of human influence on climatic change and the associated sea level change. As indicated by Hesselman et al. new remote sensing and associated GIS techniques have recently been developed which are a great contribution in determining the fate of the coastal zones with respect to the threats induced by natural and human activities.  相似文献   

森林景观模型研究新进展及其应用   总被引：1，自引：0，他引：1  

奚为民  戴尔阜  贺红士 《地理科学进展》2016,35(1):35-46

森林景观模型(forest landscape models)是基于森林动态机制和干扰作用在景观尺度上模拟和预测森林时空变化特征的计算机模型。该类模型越来越多地用于森林规划、经营管理、生态资源保护与恢复及全球气候变化研究。本文通过对大量文献资料的整理,对森林景观模型的概念、尺度、类型、方法、应用和最新研究进展进行了综述。随着计算机、地理信息系统、遥感等技术的迅猛发展,森林景观模型将会越来越多地与地理信息系统、规划经营管理决策等紧密结合,未来将向服务性决策模型方向发展。  相似文献   

三肇凹陷扶余油层致密油资源评价与参数研究          下载免费PDF全文

郑曼  王社教  王瑞  汪少勇  陈宁生 《地质科学》2016,(1):177-188

松辽盆地三肇凹陷扶余油层发育河流-浅水三角洲环境下形成的低渗透致密砂岩储集层,已发现的探明储量以常规砂岩储层中的岩性油藏为主。剩余资源以赋存于孔隙度小于10%、渗漏率小于1×10^-3 μm²储集层中的致密油为主。本文分析三肇凹陷扶余油层致密油成藏条件,采用致密油的资源评价方法(小面元容积法、资源丰度类比法及EUR类比法)对研究区源下致密油资源进行评价,并初步估算青山口组一段泥岩的生烃量,获取了泉四段致密油的地质资源量、运聚系数、最终可采资源量、可采系数、地质资源丰度和可采资源丰度等关键参数,这类参数代表了松辽盆地源下致密油资源评价的关键参数,对评价其它地区相同类型的致密油具有借鉴意义。  相似文献