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Downhole magnetic surveys

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Proceedings Papers

Paper presented at the Middle East Technical Conference and Exhibition, February 25–28, 1979
Paper Number: SPE-7748-MS
... Assembly directional survey compass error magnetic pole strength fbha drill assembly drillstring design drill pipe selection pole strength magnetic interference assembly earth 1 SPE 7748 DETERMINING DOWNHOLE MAGNETIC INTERFERENCE ON DIRECTIONAL SURVEYS by A. C. Scott and B. E. MacDonald...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194179-MS
.... The methods are used to evaluate downhole magnetic survey data that was flagged after evaluation by subject matter experts, but traditional quality control measures had failed to identify as problematic. Errors that do not fit the expectations of the error model are flagged in a way that is apparent to a non...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119420-MS
... concept for enabling cost-efficient downhole connections—namely, Rotating Magnetic Ranging Services and Single Wire Guidance. After extensive testing that found the ranging technology suitable, an existing offshore well jacket located in Southeast Asia, in 5.1 m of water and 1.3 km from shore...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, August 27–29, 2018
Paper Number: SPE-190979-MS
... techniques for magnetic ranging versus the simultaneous gyro attitude referencing. The alternative techniques include a magnetic north orientation and the north orientation derived from a prior downhole survey and gravity high side tool face. The results show that the described technique can improve magnetic...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 5–8, 2003
Paper Number: SPE-84452-MS
... speed motor with a bent housing, mule-shoe orientating sub with a built-in float valve, nonmagnetic drill collars which include magnetic surveying sensors and a slick drill pipe. The sensor package transmits data using mud-pulse telemetry, a microprocessor-controlled downhole procedure utilizing...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-196131-MS
..., the two azimuth solutions are symmetric around magnetic north/south, which might not be an issue when drilling horizontally in east/west, because it is clear which orientation the BHA has from the history of the survey points. However, when drilling north/south, this algorithm is not particularly helpful...
Proceedings Papers

Paper presented at the SPE Russian Petroleum Technology Conference, October 12–15, 2021
Paper Number: SPE-206630-MS
... properties of the metal (electrical conductivity and magnetic permeability) at downhole conditions. Moreover, if the casing configuration to be assessed did not exist in the set of palettes developed in the laboratory, then interpolation between palettes will need to be applied. This can introduce...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2012
Paper Number: SPE-150107-MS
... between downhole tool readings and the British Geological Survey (BGS) Global Geomagnetic Model (BGGM), which provides the magnetic field at a 400-km resolution. A better understanding of natural variations in the local magnetic field is essential for a successful development of the field. As such, a new...
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-205938-MS
... an approach to investigate the barriers status prior the rig came to the location. Surface diagnostics included evaluation of pressure trends, completion design, leak fluid composition and drilling records analysis which guided the selection of downhole survey. The input parameters for downhole through...
Journal Articles
SPE Drill & Compl 35 (01): 014–025.
Paper Number: SPE-194130-PA
Published: 12 March 2020
... of different but complementary survey methods. In this paper, we focus mainly on the benefits of combining gyroscopic and magnetic measurements to reduce or remove the known errors related to the Earth's magnetic field to which magneticsurvey systems are susceptible: errors in total magnetic field...
Proceedings Papers

Publisher: International Petroleum Technology Conference
Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-22255-MS
... integrity management system (WIMS). In fact, temperature and pressure surveys play a major role in evaluating and preventing casing leaks in the wells and any potential flow behind casings. Usually, these surveys are the first line of defense in evaluating immediate risks related to downhole flow anomalies...
Proceedings Papers

Publisher: International Petroleum Technology Conference
Paper presented at the International Petroleum Technology Conference, February 21–23, 2022
Paper Number: IPTC-22080-EA
... and providing zero motion while making and sending downhole survey measurements. This procedure involves drilling risks, delivers reduced drilling efficiency and increases the risk of differential sticking in depleted reservoirs. As a leader in modernizing the drilling industry, a major operator has worked...
Proceedings Papers

Paper presented at the IADC/SPE Asia Pacific Drilling Technology Conference, August 22–24, 2016
Paper Number: SPE-180581-MS
... or abandoned BHAs still downhole ("fish"). While the survey platform cannot correct for the presence of nearby wells, if the crustal magnetic data have been acquired, it can correct for the other survey biases. Crustal offsets can be identified by surveys gradually going out of specification by slowly...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2013
Paper Number: SPE-166165-MS
... automation) Accurate magnetic tool face kickoff (improved continuous survey) Efficient buildup curve drilling (improved continuous survey) HIA in lateral (downhole steering automation) Figure 1 Downhole steering automation used in the sections drilled with a high-dogleg RSS...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 15–18, 2021
Paper Number: SPE-207240-MS
... and XRD test. The dynamic behavior of drilling fluid in shielding the geomagnetic field has made correction of the downhole magnetic sensor reading errors caused by magnetic contaminated drilling fluid impossible so far. Thus, effective cleaning of the magnetic content of the drilling fluid...
Proceedings Papers

Paper presented at the SPE Middle East Oil and Gas Show and Conference, March 18–21, 2019
Paper Number: SPE-194784-MS
... in conjunction with the earliest downhole magnetic survey tools ( Kopecki 2010 ). The typical drill collar is approximately 30 feet long with an outer diameter between 4 and 9 inches. Most bottom hole assemblies (BHAs) used in directional drilling contain the following components: the drill bit, a mud motor...
Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 3–5, 2020
Paper Number: SPE-199588-MS
... in relation to the surrounding wellbores this potential strike zone radius is calculated. The traditional wellbore surveying practices alone cannot provide an accurate relative position between the wellbores due to the aforementioned positional uncertainty. Magnetic ranging has been used for relative...
Journal Articles
J Pet Technol 61 (05): 75–82.
Paper Number: SPE-0509-0075-JPT
Published: 01 May 2009
...Karen Bybee This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 119420, "Rotating-Magnetic- Ranging Service and Single-Wire- Guidance Tool Facilitates in Efficient Downhole Well Connections," by Ray T. Oskarsen, SPE, and John W. Wright, SPE, John...
Proceedings Papers

Paper presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, July 27–31, 2020
Paper Number: SPE-199127-MS
... associated with significant positional uncertainty. The major part of this uncertainty comes from compounding systematic errors that accumulate at every survey station when magnetic and gyro measurement-while-drilling or wireline tools are used ( Wolff, 1981 ). Modern downhole survey correction and error...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204066-MS
... blindly, based on the position of the first casing collars revealed by caliper or ultrasound surveys. This may result in an increase of the RIG operation timing from few hours to few days. The paper shows results of downhole scanning during three subsea wells P&A campaign at the stage...

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