Well Trajectory Measurement Error Based on Gyro Survey
Gyroscopic survey technology is one of the key technologies to promote the progress of directional drilling technology. It is of great practical significance to study the error of well trajectory measurement based on gyro surveys and identify the main error sources. This paper introduces the error s...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2022-01-01
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| Series: | E3S Web of Conferences |
| Subjects: | |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/25/e3sconf_gesd2022_01008.pdf |
| _version_ | 1811179592025636864 |
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| author | Diao Binbin Zhang Yan Gao Deli Liu Zhe |
| author_facet | Diao Binbin Zhang Yan Gao Deli Liu Zhe |
| author_sort | Diao Binbin |
| collection | DOAJ |
| description | Gyroscopic survey technology is one of the key technologies to promote the progress of directional drilling technology. It is of great practical significance to study the error of well trajectory measurement based on gyro surveys and identify the main error sources. This paper introduces the error sources which lead to the uncertainty of borehole position in gyroscopic survey, six gyroscopic survey error models, and the calculation model of the contribution rate of the error sources to the error ellipse. The differences between gyro and MWD survey errors and the main error sources of gyro surveys are investigated with an example. The results show that gyroscopic surveys cannot reduce the uncertainty of borehole position compared to MWD surveys in the environment without magnetic interference. The static measurement by a three-axis gyro inclinometer is more beneficial for the improvement of the measurement accuracy of the borehole position. The error sources that contribute to the measurement error of the well trajectory are also different in the vertical section, build-up section, and horizontal section. Unlike the main error source of the MWD survey, the g-dependent error sources of the gyro sensor significantly contribute to the measurement error of the borehole trajectory. Therefore, the measurement error of the well trajectory can be significantly reduced by improving the gyroscope survey tool and reducing the influence of spin mass unbalance. |
| first_indexed | 2024-04-11T06:36:53Z |
| format | Article |
| id | doaj.art-2c88e391066e46128e92b0d75f151889 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-04-11T06:36:53Z |
| publishDate | 2022-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-2c88e391066e46128e92b0d75f1518892022-12-22T04:39:39ZengEDP SciencesE3S Web of Conferences2267-12422022-01-013580100810.1051/e3sconf/202235801008e3sconf_gesd2022_01008Well Trajectory Measurement Error Based on Gyro SurveyDiao Binbin0Zhang Yan1Gao Deli2Liu Zhe3China University of PetroleumChina University of PetroleumChina University of PetroleumChina University of PetroleumGyroscopic survey technology is one of the key technologies to promote the progress of directional drilling technology. It is of great practical significance to study the error of well trajectory measurement based on gyro surveys and identify the main error sources. This paper introduces the error sources which lead to the uncertainty of borehole position in gyroscopic survey, six gyroscopic survey error models, and the calculation model of the contribution rate of the error sources to the error ellipse. The differences between gyro and MWD survey errors and the main error sources of gyro surveys are investigated with an example. The results show that gyroscopic surveys cannot reduce the uncertainty of borehole position compared to MWD surveys in the environment without magnetic interference. The static measurement by a three-axis gyro inclinometer is more beneficial for the improvement of the measurement accuracy of the borehole position. The error sources that contribute to the measurement error of the well trajectory are also different in the vertical section, build-up section, and horizontal section. Unlike the main error source of the MWD survey, the g-dependent error sources of the gyro sensor significantly contribute to the measurement error of the borehole trajectory. Therefore, the measurement error of the well trajectory can be significantly reduced by improving the gyroscope survey tool and reducing the influence of spin mass unbalance.https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/25/e3sconf_gesd2022_01008.pdfdirectional drillinggyromeasurement errorcontribution rate |
| spellingShingle | Diao Binbin Zhang Yan Gao Deli Liu Zhe Well Trajectory Measurement Error Based on Gyro Survey E3S Web of Conferences directional drilling gyro measurement error contribution rate |
| title | Well Trajectory Measurement Error Based on Gyro Survey |
| title_full | Well Trajectory Measurement Error Based on Gyro Survey |
| title_fullStr | Well Trajectory Measurement Error Based on Gyro Survey |
| title_full_unstemmed | Well Trajectory Measurement Error Based on Gyro Survey |
| title_short | Well Trajectory Measurement Error Based on Gyro Survey |
| title_sort | well trajectory measurement error based on gyro survey |
| topic | directional drilling gyro measurement error contribution rate |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2022/25/e3sconf_gesd2022_01008.pdf |
| work_keys_str_mv | AT diaobinbin welltrajectorymeasurementerrorbasedongyrosurvey AT zhangyan welltrajectorymeasurementerrorbasedongyrosurvey AT gaodeli welltrajectorymeasurementerrorbasedongyrosurvey AT liuzhe welltrajectorymeasurementerrorbasedongyrosurvey |