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Problem of Monitoring of Arbitrary Oriented Trajectories of Boreholes with SmallDiameters by Means of Strapdown Gyroscopic Inclinometers and its Solution Methods

机译：捷联式陀螺测斜仪监测小直径井眼任意轨迹的问题及解决方法

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摘要

The possibility to use two-axis gyro rate sensor (GRS) inrnprinciple for measurement of trajectory parameters is shown.,rnin the present report. The angular momentum vector of thisrnsensor is oriented along the longitudinal axis of the boreholerndevice. The errors and limits of this scheme utilization arerndefined, when operating in gyrocompassing mode. A methodrnof utilization of the scheme with a longitudial gyro is originalrnfor two operation modes (gyrocompassing and analyticalrndirectional gyro) near the line West-East. The errors intrinsicrnto such a combined operation mode are analyzed.rnIn order to eliminate the restrictions typical forrninclinometer with a longitudinal gyro, it was proposed tornarrange GRS with angular momentum in the cross-sectionrnplane of the borehole. And with this, a method of inclinometerrnutilization was develop, which permits not only to solve thern“accuracy loss zone” problem but also to eliminate effect ofrnthe gyro drift changeability caused both by its utilizationrnperiod and the gyro start-up errors.rnFor the first time calibration of the gyro during operation isrnproposed by slewing the gyro housing about two multuallyrnperpendicular axes: the main sensor axis and the boringrncolumn axis. Algorithms on multiposition gyrocompassing ofrnsuch a single-gyro system are proposed and analyzed.rnExperimental results confirming the main conclusions ofrnthe teoretical investigations are presented.
机译：本报告显示了使用两轴陀螺率传感器（GRS）原理测量轨迹参数的可能性。该传感器的角动量矢量沿空心轴装置的纵轴定向。当以陀螺罗盘模式运行时，会定义该方案利用的错误和限制。对于西-东线附近的两种运行模式（陀螺罗经和解析方向陀螺），最初采用纵向陀螺的方法是可行的。为了消除这种组合操作模式固有的误差。为了消除典型的带有纵向陀螺仪的测斜仪的限制，提出了在井眼横截面中具有角动量的torrrange GRS。并以此为基础，开发了一种测斜仪的利用方法，该方法不仅可以解决“精度损失区”问题，而且可以消除因其使用周期和陀螺仪启动误差而引起的陀螺仪漂移可变性的影响。通过围绕两个多垂直轴（主传感器轴和镗杆轴）回转陀螺仪壳体，提出了在运行期间对陀螺仪进行标定的建议。提出并分析了这种单陀螺系统的多位置回旋算法。实验结果证实了理论研究的主要结论。

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