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首页> 外文会议>IADC/SPE Drilling Conference and Exhibition >State-of-the-Art Open Hole Tractor Enables Accurate Pressure Measurement in Horizontal Wells, Resulting in Significant Rig Time Saving
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State-of-the-Art Open Hole Tractor Enables Accurate Pressure Measurement in Horizontal Wells, Resulting in Significant Rig Time Saving

机译：最先进的开孔拖拉机可以在水平井中进行精确的压力测量，导致显着的钻机节省时间

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摘要

In North Kuwait, formation evaluation in horizontal/highly deviated wells typically requires the use of Logging While Drilling (LWD) technology. In this paper, we will discuss how for the first time in Kuwait a state-of-the-art wireline open hole tractor has been successfully used to convey an advanced wireline pressure measurement in a horizontal well. Two wells will be discussed in this paper, the first was a short radius horizontal side track in the tight carbonate formation while the second is highly deviated well across sand/shale layers. Traditionally in horizontal wells, the pressure measurement is either run on drill pipe or LWD. Moreover, the formation tightness posed another challenge, as stabilized formation pressures can be difficult to achieve. To address the challenge of formation tightness and save rig time, a fast wireline pretest measurement tool allowing dynamic control of the pretest system would be conveyed on wireline using Open Hole tractor. A job simulation was conducted, based on the friction force and tool weight, to ensure the ability of conveying the tractor to the required depth in addition to the ultimate tractor drives number with tandem configuration. After gaining confidence and experience from the first well tractoring across tight consolidated carbonate, it was decided to go for open hole tractoring across less consolidated sand/shale layers in a highly deviated well (maximum deviation of 85deg). Both jobs were successfully executed as per plan. The tool was conveyed smoothly across the tight carbonate reservoir to the target depth of 10,030 ft MD at an average tractoring speed of 1800 ft/hr. The job was concluded with a cumulative tractoring footage of 3200 ft and an operating time of 12.5 hours, which resulted in more than 30 hours of rig time savings compared to other alternatives. The requested pressure program was achieved. Due to the pressure tool's low rate pretest capability, in addition to the flexible volume and pretest time options; stabilized formation pressure data could be acquired. The precise depth control resulting from this conveyance method enabled accurate pressure profiling. Similarly, the second job was conveyed smoothly to the target depth. The combination of the advanced pressure measurement with a state-of-the-art open hole tractor conveyance method has proved to be an efficient and effective alternative to LWD and drill pipe in a challenging horizontal and highly deviated environments (the first job of its kind in the region). It resulted in acquiring accurate pressure data with significant rig time saving, and proved to be a cost effective solution contributing to an overall reduction in the well cost per barrel.
机译：在北科威特，水平/高度偏差井中的形成评估通常需要在钻井（LWD）技术时使用测井。在本文中，我们将在科威特讨论如何在科威特第一次，最先进的电缆开孔拖拉机已成功地用于在水平井中传送先进的有线压力测量。本文将讨论两个孔，首先是紧密碳酸盐形成中的短半径水平侧轨道，而第二半径在砂/页面层中高度偏离。传统上，在水平孔中，压力测量要么在钻杆或LWD上运行。此外，形成紧张性造成另一个挑战，因为稳定的形成压力可能难以实现。为了解决地层密封性和节省钻机时间的挑战，可以在使用开孔拖拉机在有线线上传送允许动态控制的快速有线预测试工具。基于摩擦力和刀具重量进行了作业模拟，以确保除了最终拖拉机驱动数量的串联配置之外，还要确保将拖拉机输送到所需深度的能力。在对紧密综合碳酸盐的第一个井手的信心和经验中获得了信心和经验，决定在高度偏差的良好井中脱脂砂/页面层的开放孔牵引器（最大偏差为85deg）。这两个作业都按计划成功执行。该工具以1800英尺/小时的平均牵引速度，在紧密碳酸盐储存器上平滑地传送到塔里碳酸盐储存器的目标深度为10,030英尺MD。这项工作是累积的3200英尺的累积训练镜头和12.5小时的操作时间，导致与其他替代方案相比，花架时间超过30小时。请求的压力计划实现。由于压力刀具的低速率预测能力，除了灵活的体积和预由时间选项之外;可以获得稳定的形成压力数据。该输送方法产生的精确深度控制使能够精确的压力分析。类似地，第二作品将平稳地传送到目标深度。通过最先进的开孔拖拉机输送方法的高级压力测量的组合已被证明是LWD和钻杆在挑战的水平和高度偏差的环境中是一种有效且有效的替代方案（其类型的第一份工作在该区域）。它导致采用具有重大钻机节省时间的准确压力数据，并被证明是一种成本效益的解决方案，有助于每桶井成本的总体减少。

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