Paradigm Drilling Services Limited - the development of a novel rotary well tractor capable of operating both within well liners and fresh borehole environments. To extend the reach and effectiveness of ERD wells

储层岩石的水平钻井增加了石油和天然气的产量，因此变得越来越普遍。目前正在使用各种技术来扩大从一个地点就可以达到的覆盖范围，从而能够进入常规钻探无法到达的绕过的或小的矿床。大多数威尔斯井都是利用井眼垂直或接近垂直部分的管子重量来施加向钻头施加重量所需的推力而完成的。该项目的目标是开发一套旋转动力牵引器，作为钻柱或完井管柱的一部分，利用钻柱旋转和钻井电机提供的动力进行操作。这种类型的牵引器具有多种用途，因为它可以提供推力或牵引力，以部署用于ERD威尔斯完井的套管或衬管的长段：此外，它们可以提供牺牲泥浆马达驱动组件，以通过套管、衬管或裸眼井构造的长段牵引智能完井。泥浆润滑轴承用于一个系统，可以科普钻井泥浆和完井液的侵蚀性，但仍然有效地运行需要发展。这些轴承还需要在高pH值和高温条件下生存，以实现其预期的长寿命。创新与两个关键目标相关;旋转钻井牵引机的概念从未被探索过，因此极具创新性。创新的另一个关键领域是上述轴承开发，可以承受高pH值，高温（高达2000 C），高粘度和含有砂砾，沙子和岩石碎片的钻井泥浆的磨损。主要受益者是那些希望勘探更偏远的碳氢化合物矿床的生产商。利用现有的地面基础设施和旋转拖拉机将确保碳氢化合物资源能够以具有成本效益的方式继续开采。用户最终受益

Horizontal drilling of reservoir rock increases oil and gas production and has become morecommon as a result. Techniques are being used to extend the area of coverage that can beachieved from a single location, enabling bypassed or small deposits to be accessed which arebeyond the reach of conventional drilling. Most wells are completed using the weight oftubulars in the vertical or near vertical section of hole to apply the pushing forces required toapply weight to the drill bit. The project aim is to develop a suite of rotationally poweredtractors that operate as a part of a drill string or completion string utilising the power providedby string rotation and a drilling motor. This type of tractor has multiple uses in that it couldprovide thrust or traction forces to deploy long sections of casing or liner for the completionof ERD wells: also, they could provide sacrificial mud motor driven assemblies to pullintelligent well completions through long sections of cased, lined or open hole reservoirformations. Mud lubricated bearings utilised in a system that can cope with the aggressivenature of drilling muds and completion fluids and yet still operate effectively requiredevelopment. These bearings also need to survive in high pH and elevated temperatureconditions to achieve their desired long life. Innovation is associated with the two keyobjectives; the concept of a rotary drilling tractor has never been explored and as such isextremely innovative. The other key area of innovation is the aforementioned bearingdevelopment that can survive high pH, elevated temperature (up to 2000C), high viscosity andwear from the ingress drilling muds containing grit, sand & rock chippings. The main benefitis for producers who wish to explore more remote hydrocarbon deposits. Utilising existing surface infrastructure with the use of rotary tractors will ensure hydrocarbon resources can continue to be extracted in a cost effective manner. Users ultimately benefit