E21B 47/006
Detection of corrosion or deposition of substances
Official title: {Detection of corrosion or deposition of substances}
E21B47/006 (Detection of corrosion or deposition of substances) appears on 271 US grants and 293 published applications in this corpus.
Search patents in E21B- Granted patents
- 271
- Published applications
- 293
- Assignees
- 103
- Inventors
- 696
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 2 | 6 |
| 2005 | 8 | 6 |
| 2006 | 3 | 9 |
| 2007 | 1 | 3 |
| 2008 | 5 | 5 |
| 2009 | 5 | 3 |
| 2010 | 5 | 5 |
| 2011 | 3 | 4 |
| 2012 | 1 | 6 |
| 2013 | 4 | 4 |
| 2014 | 4 | 1 |
| 2015 | 4 | 8 |
| 2016 | 7 | 19 |
| 2017 | 7 | 20 |
| 2018 | 8 | 11 |
| 2019 | 22 | 26 |
| 2020 | 17 | 24 |
| 2021 | 16 | 20 |
| 2022 | 14 | 22 |
| 2023 | 21 | 18 |
| 2024 | 17 | 26 |
| 2025 | 25 | 22 |
| 2026 | 11 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for wellbore drilling utilizing a thermochemical sulfate reduction (TSR) proxy25 Aug 2026US 12,716,349 B2Saudi Arabian Oil Company
- Multi-casing evaluation using multi-frequency, non-collocated, induction measurements11 Aug 2026US 12,704,060 B2Schlumberger Technology Corporation
- Processes for monitoring corrosion and carrying out operational plans using same7 Jul 2026US 12,674,385 B2Schlumberger Technology Corporation
- Downhole tubular inspection using partial-saturation eddy currents21 Apr 2026US 12,607,113 B2Halliburton Energy Services.Inc.
- Processing of azimuthal electromagnetic pipe inspection data21 Apr 2026US 12,607,601 B2Halliburton Energy Services.Inc.
- System and method for predicting corrosion rate in boreholes8 Oct 2026US 2026/0309021 A1Schlumberger Technology Corporation
- Downhole sensing based on time domain reflectometry using resistance and capacitance coupling8 Oct 2026US 2026/0309026 A1Halliburton Energy Services.Inc.
- Well integrity evaluation with eddy current diffusion time response1 Oct 2026US 2026/0299159 A1Schlumberger Technology Corporation
- Multimodal processing of pulsed eddy current response signal for well integrity evaluation24 Sep 2026US 2026/0287553 A1Schlumberger Technology Corporation
- Method for integrating the fluid dynamic, thermodynamic, and kinetic models of the calcium carbonate scale in the well completion6 Aug 2026US 2026/0227546 A1Petroleo Brasileiro S.A. - Petrobras
Most cited
By later US patents
- Monitoring of downhole parameters and tools utilizing fiber optics244US 6,281,489 B1Baker Hughes Incorporated · 2001
- Method and apparatus for inspecting well bore casing129US 5,717,169 ASchlumberger Technology Corporation · 1998
- Pipeline monitoring systems125US 6,644,848 B1ABB Offshore Systems Limited · 2003
- Fiber optic sensing system for monitoring restrictions in hydrocarbon production systems121US 5,845,033 AThe Babcock & Wilcox Company · 1998
- Exploitation method for reservoirs containing hydrogen sulphide117US 4,988,389 A1991