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81.
Arps递减开发模型 总被引:22,自引:8,他引:14
本文在Arps递减产能预测模型的基础上提出了Arps递减开发模型,提出了开发速度,采出程度等开发指标的数学关系式,分析了参数Arps递减开发模型的影响,提出了开发初期Arps递减开发模型的确定方法,便于开发初期决策,制作了Arps递减开发模型的logVd-logRp图版,logVd-log(Dt)图版,logRp-log(Dt)图版,提出了开发中晚期Arps递减开发模型的判断方法,三点抛物线法和三 相似文献
83.
Liu Baohua Wu Jinlong Xin Baisen Peng Chao . First Institute of Oceanography State Oceanic Administration Qingdao China . Ocean University of Qingdao Qingdao China 《海洋学报(英文版)》1999,(2)
INTRODUCTIONTo study the compensation model of sea topography and isostatic states by using toPOgraphicand gravity data, is an imPOrtant mean for further researching deep structures as elastic structure,stress state of lithosphere, and so on. Since Airy and Pratt proPOsed local isostatic model in the1850' s, greater development on the theoretical study has been attained. Veining Meinesz (1941 )introduced regional compensation mechanism by considering it as floating crust in elastic fie… 相似文献
84.
Nelson pointed out that the wave breaking criterion(H/d)_b for gentle slopes(i<1/100),inwhich H is the wave height and d is the water depth at the breaking point,is smaller than that for beachslopes of i>1/100),i.e.,the value of(H/d)_b for gentle slopes may be smaller than 0.6.Goda indicatedthat the wave breaking criterion given by himself is a result based on theoretical study,so it should be alsocorrect and can be used for gentle beaches,i.e.,the value of(H/d)_b for gentle slopes may be still largerthan 0.7.By use of high order nonlinear wave theory,this problem is analyzed in this study and the reasonwhy there is a large difference between different studies is explained.Moreover,the bottom energy loss dur-ing wave propagation is considered and the critical slope for the absence of wave breaking is also analyzed. 相似文献
85.
LI Yucheng
Professor the State Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian P. R. China. 《中国海洋工程》1999,(2)
-The hydrodynamic coefficients C_d and C_m are not only dependent on the size of slender cylin-der,its location in water,KC number and Re number,but also vary with environmental conditions,i.e.,in regular waves or in irregular waves,in pure waves or in wave-current coexisting field.In this paper,thenormalization of hydrodynamic coefficients for various environmental conditions is discussed.When aproper definition of KC number and proper characteristic values of irregular waves are used,a unified re-lationship between C_d,C_m and KC number for regular waves,irregular waves,pure waves and wave-cur-rent coexisting field can be obtained. 相似文献
86.
Geospatial Information Service Based on Digital Measurable Image——Take Image City·Wuhan as an Example 总被引:1,自引:0,他引:1
LI Deren SHEN Xin State Key Laboratory of Information Engineering in Surveying Mapping Remote Sensing Wuhan University Luoyu Road Wuhan China 《地球空间信息科学学报》2010,(2)
LBS (location-based service) is a remarkable outcome of the development from GIS to geospatial information service. Faced by the requirements of geospatial information from the masses and the opportunity provided by the next generation Internet and Web 2.0, a new model of geospatial information service based on DMI (digital measurable image) is presented. First, the concept of LBS and the opportunities of Web 2.0 are introduced, then the characteristic of DMI is discussed. Taking the Image City·Wuhan as an ... 相似文献
87.
A Review on the Global Stratotype Section and Point of the Permian-Triassic Boundary 总被引:6,自引:0,他引:6
YIN Hongfu TONG Jinnan ZHANG Kexin Lab of Biological Environmental Geology China University of Geosciences Wuhan Hubei State Key Lab of Geological Process Mineral Resources China University of Geosciences Wuhan Hubei 《《地质学报》英文版》2005,79(6):715-728
1 Introduction The Global Stratotype Section and Point (GSSP) of the Permian-Triassic Boundary (PTB) has been ratified by IUGS in 2001 (Yin et al., 2001). It is defined at the base of the Hindeodus parvus horizon, i.e. the base of Bed 27c of Meishan Section D, Changxing County, Zhejiang Province, South China. The PTB is important because it is not only an erathem boundary but also a great turning point of geological history symbolized by profound global changes and the strongest … 相似文献
88.
ZHANG Jing CHEN Yanjing QI Jinping GE Jun State Key Laboratory of Geological Process Mineral Resources China University of Geosciences Beijing China Key Laboratory of Metallogenic Dynamics Guangzhou Institute of Geochemistry the Chinese Academy of Sciences Guangzhou China 《《地质学报》英文版》2009,83(2)
The Tongbai-East Qinling Mountains,an important part of the Central orogenic belt,is one of the most important metallogenic belts in China and contains lots of orogenic-type and VMS-type (Volcanogenic Massive Sulfide type)metallogenic systems.The Dahe and Shuidongling VMS-type Cu-Zn deposits,located in the Erlangping Group in Tongbai and East Qinling Mountains,respectively, show similar geological and geochemical features.The Huoshenmiao Formation in the East Qinling region and the Liushanyan Formation i... 相似文献
89.
The diverse clam shrimp Nestoria-Keratestheria fauna is widely distributed in the Dabeigou Formation in northern Hebei and eastern Inner Mongolia of China.Its important component genus Magumbonia from the Dabeigou Formation in the Luanping Basin,northern Hebei,China,is revised on the basis of a scanning electron microscope (SEM) examination of the type species M.jingshangensis Wang,1984,which revealed morphological features not recognized previously.These include coarse reticulation on the umbo and promi... 相似文献
90.