Experimental study on influence of vertical casing on magnetic surveying parameters of measurement while drilling

被引：0
|
作者：
Guan Z.-C. [1 ]
Liu Y.-W. [1 ]
Shi Y.-C. [1 ]
Wang J.-Y. [1 ]
Wei J.-H. [2 ]
机构：
[1] College of Petroleum Engineering in China University of Petroleum
[2] Bohai Drilling Corporation of Shengli Petroleum Administrative Bureau
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2011年 / 35卷 / 04期
关键词：
Correction; Distribution law; Experimental study; Magnetic field; Relative position; Vertical casing;
D O I：
10.3969/j.issn.1673-5005.2011.04.012
中图分类号：
学科分类号：
摘要：
Magnetic field of casing caused the magnetic surveying parameters distortion in directional wells, which caused the collision or the unmoral construction of directional wells. Understanding the influence law of magnetic field of casing on magnetic surveying parameters is the key to the realization of interference factor correction and the guidance of construction. Using non-magnetic test-bench for casing, the impact of vertical magnetic field of casing on magnetic surveying parameters in non-magnetic environment with different relative position was researched. The results show that the distortion of magnetic surveying parameters mainly associates with the relative distance and relative azimuth between vertical casing and instruments. When the relative azimuth is fixed, the magnetic surveying parameters are approaching to true parameters with the increase of relative distance. When the relative distance is fixed, taking magnetic north direction as symmetry axis, the trend of magnetic surveying parameters assumes an approximate symmetric form. The impact of vertical casing on magnetic surveying parameters in the direction of magnetic north pole is larger than that in the direction of magnetic south pole. Magnetic field of casing has no interference to measurement of inclination.
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页码：72 / 76
页数：4
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