东营凹陷广饶海相灰岩油藏的勘探与成因机制探讨   总被引：1，自引：1，他引：0  

李春光 《海相油气地质》1998,3(2):22-28

山东东营凹陷南部的广饶油藏为一奥陶系灰岩残丘山整带含稠油的大潜山油藏,其埋藏深度为６３４．４￣１５７５．０ｍ,现已探明含油面积３０．７ｋｍ＾２。１９９０年发现一个山头含油,１９９１￣１９９３年发现多个山头含油,１９９６￣１９９７年在各山头之间的部位钻探,结果探明潜山带南部整带含油。地质和地球化学资料分析证实,该油藏不仅是今生储潜山油藏,还是烃类经基岩风化壳运移、聚集而形成的稠油油藏。形成稠油的主要  相似文献   

从地震信息看中国东部和中国中西部沉积盆地构造演化动力学与断块油气藏(下) 中国中西部盆地演化及断块(圈闭)油气藏     

杨克绳 《海相油气地质》1998,(4)

中国中西部地区以塔里木盆地及其演化为典型代表。震旦纪以来,经历了地台发育、持续沉降、拉张翘倾、挤压坳陷及断陷推覆等构造发育阶段,与中国东部一样,表现为拉张与挤压交互出现的手风琴式演化史,突出的差别在于晚喜马拉雅期在西部地区形成强烈的挤压逆掩推覆构造,而东部地区只形成坳陷式的沉积盆地。中亚—蒙古大洋、秦—祁—昆大洋、古特提斯洋、中特提斯洋、印度洋以及印度板块等在不同地质时期的板块活动是中国中西部地区盆地演化发展的动力学因素。根据地震剖面解释成果,可确定出四种断块油气藏类型,均反映后期挤压逆冲特征,尤其是燕山期—喜马拉雅期推覆前锋带断块油气藏,还可区分为拆离型、褶皱型、前冲型和反冲型等四种,且每一种还可再区分出若干种。  相似文献   

Quality Assessment of Concrete Blocks Exposed in Nature for Eighty Years     

Hu Yuchu  Wu Shaozhang Lu Liyun Senior Engineer  Nanjing Hydraulic Research Institute  Nanjing Professor  Senior Engineer  Nanjing Hydraulic Research Institute  Nanjing Assistant Engineer  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1992,(4)

The concrete blocks used on a jetty in Shanghai were made in 1909 and 1910. Having been exposed in nature for 80 years, now there are 4600 pieces of blocks left on the jetty. Comprehensive inspections, such as external appearance examination, core-drilling of concrete blocks, ultrasonic detection, nuclear densimeter inspection and in-door and out-door chemical analysis, show that 75% of the blocks are of the rebound number of 21 - 23, and the saturated limit compressive strength and dry limit compressive strength of 10MPa; the carbonized depth of concrete is 1 - 2 mm. Compared with the state of the jetty in 1968, already used for 60 years then, the jetty is expected to serve another 40 years or more after being repaired.  相似文献   

Statistic Analysis of the Annual Extreme Wave Parameters for the Coast of China     

Yao Guoquan Ding Bingcan Wang Jianyi Ma Zhixiong Senior Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1993,(1)

- According to the need of project design for offshore engineering and coastal engineering, this paper statistically analyses the annual extreme data of waves acquired at 19 observation stations along the coast of China. Five kinds of distribution curves are adopted: Pearson Ⅲ(P-Ⅲ), Log-Extreme I (LE), Log-Normal(LN), Weibull(W) and Exponential r(Eг) to check the adaptability to the long-term distribution of annual extreme of wave in the China Sea areas. The New Curve Fittling Method (NFIT) method and Probability Weighted Moments (PWM) method are used to estimate the distribution parameters and thereby to derive the design wave parameters with different return periods at 19 observation stations. The test results show that by combining Eг distribution and NFIT parameter estimation and optimum seeking by computer, the design wave parameters can be estimated with high accuracy, high speed and high efficiency, and the randomness of the estimated results can be avoided.  相似文献   

Experimentally validated numerical method for the hydrodynamic design of horizontal axis tidal turbines   总被引：1，自引：0，他引：1  

W.M.J. Batten  A.S. Bahaj  A.F. Molland  J.R. Chaplin  Sustainable Energy Research Group 《Ocean Engineering》2007,34(7):1013-1020

Although a lot can be learnt from technology transfer from wind turbines and ship propellers, there have been a few experiments investigating marine current turbines. As a result, a study has been carried out on the power, thrust and cavitation characteristics of 1/20th scale model of a possible 16 m diameter horizontal axis tidal turbine. Cavitation tunnel experiments for different blade pitch settings have been compared with simulations based on a developed blade element-momentum theory. This theory has been shown to provide a satisfactory representation of the experimental turbine performance characteristics. As an example application, the developed theory has been used to design possible horizontal axis tidal turbines for the tidal flows around Portland Bill. The results show that there is a clear balance between design loads and optimisation of energy yields.  相似文献   

Tracing Method of Natural Sediments by Neutron Activation and Its Application     

Mao Zhixiang  Yan Peilan  Huang Jianwei  Dai Xiankai  Han Naibing Chai Zhifang  Qian Qinfang  Ma Shulan  Ma Jianguo Engineer  Nanjing Hydraulic Research Institute  Nanjing Senior Engineer  Nanjing Hydraulic Research Institute  Nanjing Associate Researcher 《中国海洋工程》1991,(3)

A new method of Neutron Activation Analysis (NAA) for sediment movement study is presented in this paper. Through analyzing the natural sediment, the information about natural tracing agents has been obtained, which can show the direction of sediment movement and relative discharge of sediment transportation. Test results in some areas, such as Shantou Harbour and Hangzhou Bay, are in good agreement with those from normal hydrologic measurements and some results are not obtainable with the latter. The NAA is economical, practical and reliable, and should be widely used in engineering practice.  相似文献   

A Normalized Stress-Strain Model for Soft Clays     

Wang Nianxiang Wei Rulong Engineer  Geotechnical Engineering Department  Nanjing Hydraulic Research Institute  Nanjing Prof. Senior Engineer  Geotechnical Engineering Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1994,(2)

-A nonlinear model for the stress-strain behaviour of normally consolidated clays is presented based on the experimental results. It is indicated that the volume strain under pure shear is a power function of stress ratio and the normalized stress-strain curve is a standard hyperbola. According to the model, the coefficient of pore pressure induced by shear stress and the critical stress ratio which governs the influence of the negative dilatancy are suggested. It is shown by some triaxial tests that the proposed model can be used to study the negative dilatancy and to describe the stress-strain-pore pressure adequately for soft clays.  相似文献   

Dynamic Response Analysis of Risers Subjected to Combined Wave and Current Loading     

Nie Wu  Yu Xiukun Ma Chunyan Li Weiyang Associate Professor  Harbin Shipbuilding Engineering Institute  Harbin Research Staff  Harbin Shipbuilding Engineering Institute  Harbin Professor  Harbin Shipbuilding Engineering Institute  Harbin 《中国海洋工程》1993,(2)

A dynamic response analysis in the frequency domain is presented for risers subjected to combined wave and current loading. Considering the effects of current, a modified wave spectrum is adopted to compute the linearized drag force. An additional drag force convolution term is added to the linearized drag force spectrum, therefore the error is reduced which arises from the truncation of higher order terms in the drag force auto-correlation function. An expression of linearized drag force spectrum is given taking the relative velocity into account. It is found that the additional term is a fold convolution integral. In this paper dynamic responses of risers are investigated, while the influence of floater motion on risers is considered. The results demonstrate that the accuracy of the present method reaches the degree required in time domain analysis.  相似文献   

Experimental Study on Superficial Sliding of a New Type of Offshore Platform     

Wang Zhaojing Zhang Ling Senior Engineer  Geotechnical Engineering Department  Nanjing Hydraulic Research Institute  Nanjing Engineer  Geotechnical Engineering Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1996,(1)

- In order to verify the theoretical design and computation of a new type of platform, laboratory model test of the superficial sliding of the platform is carried out. Test results show that the requirement for the stability of the platform can be satisfied, and the API-82 criterion can be met. It is also suggested that, in order to enhance the stability of the platform, a buried- pad with porous holes and a long apron-board should be adopted in the design of the new type of platform.  相似文献   

Simulation on the Strength of Model Armor Block on Rubble-Mound Breakwaters     

Chen Guoping  Wang Hong  Hu Zhinong Master  Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing Engineer  River  Harbour Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1996,(2)

This paper mainly deals with the simulation on the strength of the concrete armor block in model test. According to the requirement for the strength of blocks in models with various scales, the components of materials for model blocks and their proportions are determined. The failure of armor blocks on rubble-mound breakwaters is reproduced by model tests.  相似文献