专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6019180A Method for evaluating the power output of a drilling motor under downhole conditions 失效
标题翻译：井下条件下钻井电机功率输出评估方法
公开(公告)号：US6019180A
公开(公告)日：2000-02-01
申请号：US69525
申请日：1998-04-29
申请人： Demosthenis Pafitis , Vernon Koval
发明人： Demosthenis Pafitis , Vernon Koval
IPC分类号： E21B44/00
CPC分类号： E21B44/00 , Y10T137/86445
摘要： A procedure is described for determining the power output of a downhole drilling motor, when the motor is inside the wellbore. The technique uses stand-pipe pressure and fluid flow rate as the main inputs. The power output of the motor is calculated by carrying out two low flow stall tests at flow rates lower than the drilling flow rate. These tests result in "off-bottom" and stall pressures at the two flow rates. Another off-bottom pressure is taken at the actual flow rate that will be used during drilling operations. From the use of the off-bottom and stall pressure measurements, a determination is made of the differential pressure across the motor and the stall pressure at the actual drilling fluid flow rate. A full power curve and a predicted operating stand-pipe pressure for optimal power generation are provided based on an experimentally verified assumption regarding the change in rotation rate of the motor versus the differential pressure across the motor power section.
摘要翻译：描述了当电机在井眼内部时确定井下钻井马达的功率输出的程序。该技术采用立管压力和流体流量作为主要输入。通过以低于钻井流量的流量进行两个低流量失速试验来计算电机的功率输出。这些测试导致两个流速下的“底部”和失速压力。在钻井作业期间将采用的实际流量取另外的底部底部压力。通过使用底部和失速压力测量，确定电动机两端的压差和实际钻井液流速下的失速压力。基于关于电动机的转速与电动机功率部分的压差的变化的实验验证的假设，提供了用于最佳发电的全功率曲线和预测的操作立管压力。

IPRDB

热门服务

关于我们

友情链接

联系方式