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Calculation methods for directional survey

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Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204065-MS
... bit projection calculation algorithm rta data slide drilling directional survey new survey station rotary drilling projection calculation survey station divergence In directional drilling, surveys are taken at predetermined intervals based on regulatory requirements to ensure wellbore...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194085-MS
.... Abstract The wellbore position uncertainty model is an important part of well design and operational considerations particularly for multi-well pads. The true uncertainty ellipsoids are dependent on the wellbore trajectory calculation method as much as it is on the quality of the survey measurements...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204027-MS
... are required to qualify planners and field personnel in the construction, interpretation and execution of the plans for what can be crowded and complex inter-well relationships. The minimum curvature method ( Taylor and Mason 1972 , Zaremba 1973 ) for directional survey calculations...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Russian Petroleum Technology Conference, October 12–15, 2021
Paper Number: SPE-206628-MS
... drilling due to DLS control and correct calculations for lowering liner elements. Method of quality control and correction of directional measurements An inclinometer measurement consists of three measurements taken at one point: Depth (MD), Inclination and Azimuth. It is these data come...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21258-MS
... of the well is calculated from the survey data provided by the survey tools. More than 50 survey calculation methods have been proposed including simple tangential method. It was further improved with a new method called average angle method in which both inclination and direction from both survey points were...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206188-MS
... and inclination that diminished tortuosity. Figure 8 Surface Interval directional survey comparison of MWD, Drillpipe Drop Gyro and Cased-Hole Wireline Gyro Methodology to Recalculate New Surveys Running a gyro survey after each casing interval is costly and time consuming, so having a method...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215925
... by the direct wave can be replaced by the given weathering layervelocity, and the near-surface structure can be inverted by the tomographic static correction method without raytracing, which can achieve better imaging result. The method is applied to the 3D seismic data processing of survey A in the alluvial...
Proceedings Papers

Paper presented at the SPE Offshore Europe Oil and Gas Conference and Exhibition, September 3–6, 2013
Paper Number: SPE-166563-MS
... driller will not have confidence in the kickoff direction with continuous (dynamic) survey while drilling, thus requiring additional static surveys to be made, taking up precious rig time. In a novel continuous survey method used in a particular rotary steerable system (RSS), a six-axis survey was taken...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2018
Paper Number: SPE-189654-MS
... for high-angle well crossings. The simple point-to-point collision calculations using this vector method do not include the confidence in the relative direction of the two wellbores. Therefore, probability calculations and separation-factor calculations that engage the pedal-curve distances are overly...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998536
.... The direct method was employed to interpret down-hole survey data and establish a near surface S-wave velocity model. Theoretical travel times were calculated using the S-wave velocity model and matched with the first breaks of real first arrival S-wave to test the accuracy of the velocity model. Test...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-115714-MS
... deviation among the different methods of calculation for a directional or horizontal well. Consequently, it is important to improve the precision and reliability of survey calculations. Although the most precise method of calculating a wellbore trajectory generally requires more calculations than other...
Proceedings Papers

Paper presented at the SPE Norway One Day Seminar, May 14, 2019
Paper Number: SPE-195621-MS
... survey well planning survey data wellbore direction rigorous averaging method variance procedure position uncertainty earth parameter tool model well profile society of petroleum engineers error term wellbore profile In many oil wells, directional surveys are obtained at various...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206253-MS
... . Bybee , Karen . "Multistation Analysis of MWD Magnetic Directional Surveys." J Pet Technol 62 ( 2010 ): 52 – 53 . Chia , C.R. , Phillips , W.J. , and D.L. Aklestad . "A New Wellbore Position Calculation Method." SPE Drill & Compl 18 ( 2003 ): 209 – 213 . Grindrod...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-457
... and provided a model for calculating the depth of towfish. Smith (2004) introduced some field experiments with the magnetic gradiometer system for UXO surveys. Takaak (2006) discussed magnetic dipole localization by measurement of its magnetic field. MATERIALS AND METHODS In the measurement plan, firstly, we...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194099-MS
... and unplanned tortuosity. The directional drilling literature contains various attempts at developing a metric of tortuosity that can be easily calculated and interpreted in real-time ( Gaynor, 2002 ). However, these attempts have shown that one metric cannot meet both needs. Two existing methods...
Proceedings Papers

Paper presented at the SPE Arctic and Extreme Environments Technical Conference and Exhibition, October 15–17, 2013
Paper Number: SPE-166865-MS
... Currently MSA is widely used for correction of magnetic directional surveys. However, the accuracy of the method can be strongly limited by geomagnetic reference uncertainty, especially for horizontal wells near the west/east direction. Often, to provide satisfactory accuracy of the azimuth...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-W1-02
... for direct P and converted PS waves recorded by a far offset VSP in the GOM and successfully obtained images of the salt base at the salt flank. Willacy and Kryvohuz (2019) developed the reverse time migration (RTM) method for salt proximity and applied RTM to a convention 3D VSP survey with a limited...
Proceedings Papers

Paper presented at the SPE Nigeria Annual International Conference and Exhibition, August 2–4, 2016
Paper Number: SPE-184282-MS
... and Technology . 7. Taylor , H. l and Mason , C. M. 1972 . A systematic Approach to well survey calculations ," Soc. Pet. Eng. J. pp. 474 – 88 . 8. Wilson , G. J. 1968 . " An Improved method for Computing Directional Survey ," Journal of Pet. Tech. pp. 871 – 76 ; trans., AIME...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 13–16, 2017
Paper Number: SPE-188653-MS
... i ( β ) ∂ β j Due to the complexity of the derivatives calculation, a finite difference method is used to obtain the Jacobian matrix. λ k in Equation (9) indicates the magnitude and direction of δ β k . This factor can be adjusted at each iteration in such a way...
Proceedings Papers

Paper presented at the Offshore Technology Conference Asia, March 20–23, 2018
Paper Number: OTC-28274-MS
... the direction of source implementation and here we model the effects of source implementation directions in terms of reservoir monitoring. Maxwell's equations were solved in the fictitious wave domain, a scheme allows faster calculations than conventional methods, reducing the computational cost. However...

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