最新螺杆钻具使用手册chineseandengkish

最新螺杆钻具使用手册chineseandengkish内容摘要：

l and radial load from drilling weight. We have two types of drive shafts, as follows: 1) Bit nozzle pressure loss is Mpa, using hard alloy radial bearing and drive shaft assembly with thrust bearings ()。 2) Bit nozzle pressure loss is Mpa, using hard alloy radial bearing and PDC cutter flat thrust bearing. It has longer lasting life and higher bearing capacity. 上海奥森油田服务有限 公司 Shanghai Ocean Oilfield Service Co. Downhole Motor 7 4．螺杆钻具型号说明 4. Model Number 例： 5LZ165 表示为转子头数与定子头数比为 5﹕ 6 的、外径为 165mm 螺杆钻具，钻头水眼压降为。 BH(渤海 )。 5．使用须知 5． 1 井场钻井技术人员和司钻必须了解钻具的结构原理和使用参数。 按使用手册的要求合理使用钻具。 5． 2 根据整个井眼的钻井作业计划，由钻井工程师根据任务结合地层结构、井眼孔径、深度、机械转速选定所用钻头与钻具型号，决定水眼直径和钻具组合。 现场施工必须严格按制定的钻井作业计划执行。 5． 3 对钻井液的要求：螺杆钻具的马达为容积式，决定钻具性能的因素是马达的输入流量和作用于两端的压力 降，而不是钻井液的类型。 钻井液的物理化学性能除个别有损钻具寿命外，一般不影响钻具性能，应注意考虑钻井工艺的需要。 但钻井液所含的各 Example: It expresses: Ratio of the number of rotor ends and the number of stator ends is 5:6。 of Screw drill is 165mm。 Bit nozzle pressure loss is Mpa。 BH is Bo Hai 5. Application Notices Site drilling technical persons and drillers shall know well screw drill structure principle and technical parameters, correctly apply screw drill in accordance with requirements specified in this manual. Drilling engineer shall make operation program upon the whole hole, and select the model of screw drill and bit to be used , determine nozzle size and screw drill bination according to formation edge structure, hole size, depth and mechanical speed . The determined drilling program shall be strictly carried out accordingly on the location. Drilling Fluid Requirement: Screw drill motor shall be volumetric. The key factor to screw drill property is motor inlet flow rate, and the pressure loss functioning onto both ends. But it is not the kind of drilling fluid. Physical and chemical property of drilling fluid, except the individual damage to screw drill running life, normally does not affect its property. 上海奥森油田服务有限 公司 Shanghai Ocean Oilfield Service Co. Downhole Motor 8 工艺的需要。 但钻井液所含的各 种硬颗粒必须予以限制，因为它会加速轴承、马达的磨损而降低钻具的使用寿命，建议固相含砂量不超过 1%（事实证明：若含砂量达到 5%，钻具寿命会降低 50%）。 同时注意钻井液中不要混有各种气体，因为混有气 体的钻井液在钻具中压力的变化下容易产生“气蚀作用”，加速钻具的损坏，尤其是定子橡胶更容易被气蚀坏，必须予以足够的重视。 5． 4 使用钻头的选择：与螺杆钻具一起使用的钻头在选择上是十分重要的问题。 因此螺杆钻具是否能成功的发挥作用的几个因素中，钻头与钻具的匹配是最重要的，希望能引起现场使用人员的重视。 选择钻头与螺杆钻具配套使用的因素应是： （ 1） 钻井方案及计划； （ 2） 针对地层需要的刃部结构； （ 3） 钻井液流通通道的结构； （ 4） 预先计划的机械钻速； （ 5） 使用该钻头，钻具运转的时间估算： （ 6） 钻头水眼压降的设计。 什么样的地层结构、地层 软硬、使用哪类钻头、用什么样的刃部设计，请参考有关钻头的专业资料，这里仅就使用螺杆钻具完成各种钻井作业，对钻头的选择作些简要说明。 A：除了钻头水眼造成的压降外，要使钻井液流经钻头底部时别再形成其他较大的压力损失，尤其是钻头水眼压降已达到该型号钻具规定的压降值时更应注意。 这对牙轮钻头不必担心，但是 PDC钻头冠部液体通道的设计，就必须考虑通道过流面积是否可能造成额外过多的压力损失问题，同时并能保证岩屑及时排出及钻头冷却需要。 B：牙轮钻头：这类钻头在螺杆钻具配合使用时，更实用于钻井周期不长的作业，如定向造斜、 侧钻等。 This shall be considered for the need of drilling process. However, the content of hard grains in mud stream must be limited since they can speed up wear of bearing and motor, may cause shortening screw drill running life. It is suggested that solid sand content should not be over 1%( actually when sand content is 5%, running life will be reduced by 50%). Also, take care, not let drilling fluid mixed with any gas , because the fluid with gas may easily cause ―Gas Erosion‖. It may speed up tool damage with change of pressure. In particular, the rubber on stator is more easily damaged by gas erosion. Enough attention shall be paid to this problem. Bit Selection: For bit selection, it is important to bine and match screw drill to be used. It relates to success of screw drill application. It is advised site operators shall take care of this matter. Application factors to bine bit with screw drill are as follows: (1) Drilling Plan and Program。 (2) Formation Edge Structure。 (3) Structure of Mud Flowing Channels。 (4) Determined Mechanical Drilling Speed。 (5) Estimation of Bit and Screw Drill Running Life。 (6) Design of Bit Nozzle Pressure Loss Please refer relevant professional information for detail bit selection on formation structure. Hereby it briefly describes bit selection for performance of drilling operation with screw drill. A: Except bit nozzle pressure loss, in order to avoid producing higher pressure loss while drilling fluid flowing through bit bottom, attention shall be specially paid to this matter when the nozzle pressure loss has reached the specified loss value of this kind drilling tool. This does not affect rock bit, but for the crown passage design of PDC bit. The problem shall be considered that passing fluid area may cause much extra loss, meanwhile to ensure prompt discharge of cuttings and bit cooling. B: Rock Bit : When this kind of bit is used with screw drill it is more appropriate to shorter drilling period, such as directional deflection and reentry etc. 上海奥森油田服务有限 公司 Shanghai Ocean Oilfield Service Co. Downhole Motor 9 C： PDC 钻头： PDC 钻头不仅适用于定向造斜，更适用于钻井周期较长的作业，如打直井等。 在较长周期的钻井作业中，最重要的因素就是钻头与钻具作为一个 整体，不要由于其中的哪一部分出了问题，而造成不必要的起下钻。 大家已熟知：复合片钻头较牙轮钻头寿命长，而且结构是整体的，具有很多优点。 D：提高钻具和钻头的使用寿命，也是一个重要因素。 改善传动轴的稳定性，例如加稳定器，对提高钻具寿命发挥钻头性能是有帮助的。 考虑钻头金刚石的几何尺寸、布置方位、钻压负荷与要求井下钻具转速高、钻压小的甚密关。