钻井泥浆

——提高样品和岩心采取率—在采样作业中，钻具提升过程，钻孔内的泥浆柱对取样器内岩样有抑留作用，可使岩样免于脱落。在破碎、松软、易碎或水溶性地层中，泥浆的     

英汉对照参考资料(15)

Portable computer programhelp drllling optlmizationby Chris H. ReinsvoldSmith Tool Division of Smith International Inc.A NEW TOOL has been devised to help drilling con-tractors and operators answer complex drilling ques-tions both at the office and in the field. This informa-tion, available for quite a few years, is now more sim-ply and quickly computed through the utilization ofmodern programming and micro-computer technology.As part of its commitment to lowering drilling costsper foot and in an effort to provide more complete,precise technical information in the field, Smith Toolhas developed a family of new portable computer pro-grams that: (1) alleviate the complications of ter-     

电铸法制造细粒金刚石钻头

在钻头钻进岩层的外表面上,大都为1/60克拉以下的细粒金刚石,而各金刚石的颗粒结晶体尖端(切刃),均于钻头表面作垂直方向外露,作为这种表镶细粒金刚石钻头,钻头表面复以金刚石群,组成螺旋状,各群金刚石颗粒,当钻头旋转时,其轨迹如图4所示     

英汉对照参考资料(16)

Comment:Will Mike be the keyman on the drilling crew?RIG MANUFACTURERS AND OPERATORS have been quick to appreciate theadvantages of all-hydraulic operation. Tried and tested components could beconfidently built into new designs, flexibility in the positioning of major unitswas simplified-to the extent that the motive power pack could be physicallyseparated from the drill, if desired-and very sensitive control of all operationswas possible. The operator's work was simplified and alleviated since he couldbe provided with a console (mobile, if required) carrying all the control valvesand gauges. There were also many other incidental benefits-as listed in allthe best catalogues.     

英汉对照参考资料(12)

The Future of Drilling EquipmentBut considering the 80 plus year history ofrotary oil well drilling, I confess to be just asmystified as he that so little has beenaccomplished in streamlining and improvingthe system.Why are rotary rigs, dnilling 5000 ft anddeeper, configured and operated exactly as theywere 50 or more years ago?     

英汉对照参考资料(13)

In the hole equipment fordiamond drillingA basic review of the various standards, sizes, types ofequipment, and indicated applications of the hardwarethat goes into the hole when core drillingDrill rods and casingThere is often confusion re-garding the nomenclature,types, and sizes of bits, rods,core barrels; and other in theRegular DCDMA hole sizes range fromR(1 3/16 inch) to H(3 15/16 inch). TheBSI/ISO standard goes up to Z(7 7/8inch) (see Table 1). This standard will beIn the DCDMA standard it is not fixedwhether drill rods should have parallelwalls or should be upset. In which casethere is sufficient material at the end of the     

柴油机的使用与维护方法

柴油机基本上十分类似汽油机。不过，柴油机无电发火系统。为了有效地运转，柴油机必须具备润滑油、洁净空气、清洁燃料和有效冷却。     

“克拉”的来龙去脉

古代最早使用的克拉单位，缘于刺槐树豆籽。当时，克拉的变化在188.60—215.99毫克之间。这种用法大约溯及18世纪到19世纪末叶。现在，所有宝石与工业金刚石贸易均按国际承认标准—每克拉为200毫克或0.20克。目前，全世界买卖金刚石凿岩工具、板牙、磨具及金刚砂等所沿用下来的     

金刚石钻探作业的经济分析

金刚石钻探的应用领域极其广泛。通常，大多数目的为金刚石岩心钻探的取心钻进，以便从岩心上获取地质资料，其中也包括一些专用的辅助项目；像单孔钻进后，造斜、多孔底钻进、钻孔测量、岩心定向，及其他一些诸如此类的项目。这里将描述一些有代表性的钻探应用情形及影响成本大小的一些主要因素。不准备探讨特殊专门技术或个别场合专用工序的成本。     

英汉对照参考资料(11)

The HYDRA-DRILL is as simple and eary to operate as your power lawn mower. The major HYDRA-DRILL componentsare:1. The POWER MAST which holds thedrill and raises and lowers the drillstem.2. The POWERHEAD, a З-hp. gasolineengine and gearhead which rotatesthe POWER SWIVEL.