Forecasting petroleum discoveries in sparsely drilled areas: Nigeria and the North Sea   总被引：1，自引：0，他引：1  

E. D. Attanasi  D. H. Root 《Mathematical Geology》1988,20(7):763-776

Decline function methods for projecting future discoveries generally capture the crowding effects of wildcat wells on the discovery rate. However, these methods do not accommodate easily situations where exploration areas and horizons are expanding. In this paper, a method is presented that uses a mapping algorithm for separating these often countervailing influences. The method is applied to Nigeria and the North Sea. For an amount of future drilling equivalent to past drilling (825 wildcat wells), future discoveries (in resources found) for Nigeria are expected to decline by 68% per well but still amount to 8.5 billion barrels of oil equivalent (BOE). Similarly, for the total North Sea for an equivalent amount and mix among areas of past drilling (1322 wildcat wells), future discoveries are expected to amount to 17.9 billion BOE, whereas the average discovery rate per well is expected to decline by 71%.  相似文献   

Computer-controlled automated jumbo drilling robot manipulator     

C. Y. Ho  Yao Jianchi 《Geotechnical and Geological Engineering》1986,4(4):303-318

Summary This programme involves the study of the technique of using a micro-computer to control a rock drilling machine. The motion of an existing jumbo machine has been successfully analysed. The kinematic control equations are established for any given geometrical configuration. The computer software has been written to demonstrate its feasibility. The needs of hardware implementation are also discussed.The Deputy Chief Engineer at Yangzhuang Coal Mine, Hueibei Coal Mining Bureau, China.  相似文献   

金刚石钻进微钻法岩石可钻性分级的探讨     

励美恒  孔健 《地球科学》1985,(3)

岩石可钻性的分级是确定生产定额、设计钻头和选择最佳参数的依据。本文论述了作者在实验台上用微钻法进行岩石分级的研究成果。该实验台是自行设计并可以同时自动记录9个钻进参数的一种装置,微钻法可以很好地表示在两向力同时作用下,岩石破碎过程的主要力学特征。岩石抗破碎阻力是岩石机械性质的综合反映,因此,以往用单一的性质来进行分级并不完善,用微钻法进行分级、经野外实践,符合率可达85％以上。  相似文献   

孕镶金刚石钻头工作温升的理论分析   总被引：3，自引：0，他引：3  

赵建康  曲敬信  邓福铭 《煤田地质与勘探》2004,32(4):57-59

在研究钻进规程参数对钻头温升的影响过程中，以能量守恒定律为基础，建立了钻头与岩石系统的能量守恒数学模型。研究表明：在一定范围内，钻头的温升与钻压与转速的乘积呈线性关系，钻压与转速对钻头温升的影响是等效的；通过谐振子模型研究摩擦热能的产生和分配，得出以下结论：摩擦热能在钻头与岩石之间的分配，与其各自弹性模量(硬度)有关，热能的分配与其弹性模量成反比，即Q1：Q2=E2：E1。  相似文献   

Approximately-Balanced Drilling in Daqing Oilfield     

XiaBairu ZhengXiuhua LiGuoqing TianTuo 《中国地质大学学报(英文版)》2004,15(1):128-132

The Daqing oilfield is a multilayered heterogeneous oil field where the pressure are different in the same vertical profile causing many troubles to the adjustment well drillings. The approximatelybalanced drilling technique has been developed and proved to be efficient and successful in Daqing oilfield. This paper discusses the application of approximately-balanced drilling technique under the condition of multilayered pressure in Daqing oilfield, including the prediction of fornmtion pressure, the pressure discharge technique for the drilling well and the control of the density of drilling fluid.  相似文献   

长春市轻轨工程大漂石地层灌注桩成孔钻进技术          下载免费PDF全文

吴开滨  代国忠 《探矿工程》2004,31(12):12-13

结合长春市轻轨工程斜拉桥钻孔灌注桩施工实例，介绍了大漂石地层的筒钻法钻进原理、潜孔锤钻进工艺、岩心聚能爆破工艺及筒钻回转切石工艺等，为该类地层的顺利成孔成桩总结出了一套切实可行的施工方法。  相似文献   

油气悬挂技术及其在车装钻机中的应用展望          下载免费PDF全文

王智明  殷琨  郑治川 《探矿工程》2004,31(10):33-35

油气悬挂系统具有优越的非线性弹性特性和良好的减振性能，能大幅度改善悬挂系统的性能。介绍了油气悬挂技术在车装钻机的应用现状，指出了油气悬挂系统的引入对车装钻机等特种工程车辆发展的重要性。  相似文献   

钻井过程中钻具吸附卡钻事故成因与处理技术          下载免费PDF全文

卢予北  刘志国  程存平  吴青松 《探矿工程》2004,31(12):33-35

针对钻井过程中常遇的吸附卡钻事故，就其成因、产生条件及处理技术方法进行了较为详细的论述。结合工程实例对新研制的XS-1型解卡剂作用机理进行了分析、应用并提出了具体的操作规程和注意事项。  相似文献   

关于金刚石钻进时冲洗液气蚀的试验研究——金刚石钻进技术专题之二          下载免费PDF全文

汤凤林  段隆臣  В.Ф.Чихоткин  刘晓阳 《探矿工程》2004,31(7):37-40

根据水力学原理提出了冲洗液气蚀的概念，为了研究气蚀现象建立了实验台，给出了实验结果，提出了防止冲洗液气蚀的措施和相应的建议。  相似文献   

钻井与压裂液用摩芋粉的改性试验研究          下载免费PDF全文

陈晓知  刘建明  罗子立 《探矿工程》2004,31(12):40-41

魔芋胶以其固有的水溶性好、水溶胶粘度高、破胶残渣少且对地层无污染而得到水文地质钻井行业的广泛应用。在前人研究的基础上，采用化学改性与物理改性相结合的方法，提高了魔芋胶的水溶性以及护壁性能，降低了其破胶残渣  相似文献