E21B 47/017
Protecting measuring instruments
E21B47/017 (Protecting measuring instruments) appears on 1,076 US grants and 1,003 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,076
- Published applications
- 1,003
- Assignees
- 344
- Inventors
- 2,044
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 16 | 0 |
| 1990 | 13 | 0 |
| 1991 | 5 | 0 |
| 1992 | 18 | 0 |
| 1993 | 15 | 0 |
| 1994 | 13 | 0 |
| 1995 | 8 | 0 |
| 1996 | 10 | 0 |
| 1997 | 13 | 0 |
| 1998 | 14 | 0 |
| 1999 | 20 | 0 |
| 2000 | 15 | 0 |
| 2001 | 27 | 6 |
| 2002 | 16 | 24 |
| 2003 | 20 | 20 |
| 2004 | 20 | 26 |
| 2005 | 21 | 31 |
| 2006 | 22 | 22 |
| 2007 | 16 | 22 |
| 2008 | 11 | 20 |
| 2009 | 14 | 14 |
| 2010 | 21 | 24 |
| 2011 | 12 | 32 |
| 2012 | 14 | 41 |
| 2013 | 19 | 38 |
| 2014 | 34 | 55 |
| 2015 | 31 | 65 |
| 2016 | 48 | 63 |
| 2017 | 48 | 58 |
| 2018 | 51 | 73 |
| 2019 | 72 | 99 |
| 2020 | 78 | 54 |
| 2021 | 64 | 43 |
| 2022 | 53 | 36 |
| 2023 | 39 | 37 |
| 2024 | 37 | 46 |
| 2025 | 39 | 34 |
| 2026 | 28 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Transducers including laser etched substrates29 Sep 2026US 12,751,228 B2Baker Hughes Oilfield Operations LLC
- Downhole sensor apparatus, system, and related methods22 Sep 2026US 12,742,382 B2Baker Hughes Oilfield Operations LLC
- Systems for thermally insulating sensitive downhole equipment15 Sep 2026US 12,735,977 B2Saudi Arabian Oil Company
- Measuring water level in highly deviated or horizontal hydrocarbon well sections15 Sep 2026US 12,735,978 B2Openfield
- Monitoring drilling parameters25 Aug 2026US 12,716,350 B2Schlumberger Technology Corporation
- Temperature management of downhole tools8 Oct 2026US 2026/0309023 A1Eavor Technologies Inc.
- Pressure vessel antennas and containers for electronic circuitry1 Oct 2026US 2026/0302588 A1
- Apparatuses and methods for abandonment of wells having a sensor27 Aug 2026US 2026/0251056 A1NuWave Industries Inc.
- Advanced sensor subsystems for dynamic drilling performance and lithology identification in real time20 Aug 2026US 2026/0243159 A1
- Systems and methods for determining deformation of a tool string13 Aug 2026US 2026/0235027 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Well control systems employing downhole network334US 5,959,547 ABaker Hughes Incorporated · 1999
- Short hop communication link for downhole MWD system294US 5,160,925 ADevelco, Inc. · 1992
- Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores267US 6,167,965 ABaker Hughes Incorporated · 2001
- Monitoring of downhole parameters and tools utilizing fiber optics244US 6,281,489 B1Baker Hughes Incorporated · 2001
- Method for controlling production wells having permanent downhole formation evaluation sensors241US 5,597,042 ABaker Hughes Incorporated · 1997