E21B 47/007
Measuring stresses in a pipe string or casing
Official title: Measuring stresses in a pipe string or casing (for locating blocked portions of pipes E21B47/09)
E21B47/007 (Measuring stresses in a pipe string or casing) appears on 597 US grants and 652 published applications in this corpus.
Search patents in E21B- Granted patents
- 597
- Published applications
- 652
- Assignees
- 236
- Inventors
- 1,297
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 2 |
| 2002 | 6 | 7 |
| 2003 | 6 | 3 |
| 2004 | 3 | 10 |
| 2005 | 3 | 7 |
| 2006 | 3 | 8 |
| 2007 | 9 | 3 |
| 2008 | 5 | 10 |
| 2009 | 3 | 11 |
| 2010 | 6 | 3 |
| 2011 | 4 | 13 |
| 2012 | 5 | 31 |
| 2013 | 7 | 30 |
| 2014 | 23 | 21 |
| 2015 | 13 | 42 |
| 2016 | 34 | 62 |
| 2017 | 41 | 64 |
| 2018 | 41 | 53 |
| 2019 | 53 | 43 |
| 2020 | 46 | 32 |
| 2021 | 38 | 55 |
| 2022 | 48 | 43 |
| 2023 | 45 | 33 |
| 2024 | 27 | 29 |
| 2025 | 24 | 22 |
| 2026 | 18 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Calculating pull for a stuck drill string15 Sep 2026US 12,735,953 B2Landmark Graphics Corporation
- Dynamic load resistant drilling system15 Sep 2026US 12,735,974 B2Schlumberger Technology Corporation
- Brittle-burst strength for well system tubular integrity1 Sep 2026US 12,723,502 B2Landmark Graphics Corporation
- Monitoring drilling parameters25 Aug 2026US 12,716,350 B2Schlumberger Technology Corporation
- Systems and methods for torque unwind18 Aug 2026US 12,709,974 B2Helmerich & Payne, Inc.
- Wellhead fatigue damage estimation using probabilistic generative ai models1 Oct 2026US 2026/0298047 A1Chevron U.S.A.Inc.
- Mechanical casing deformation detection tool1 Oct 2026US 2026/0298072 A1Tier 1 Energy Solutions, Inc.
- Predicting torque and drag buckling behavior of a drill string and casing1 Oct 2026US 2026/0300575 A1Schlumberger Technology Corporation
- Multimodal processing of pulsed eddy current response signal for well integrity evaluation24 Sep 2026US 2026/0287553 A1Schlumberger Technology Corporation
- Modified mechanical specific energy system and methods using a ternary graph-based approach17 Sep 2026US 2026/0278331 A1Wellbore Consultants LLC
Most cited
By later US patents
- Control of heat injection based on temperature and in-situ stress measurement321US 6,102,122 AShell Oil Company · 2000
- Method and apparatus for providing controlled force transference to a wellbore tool200US 5,343,963 A1994
- Measurement of downhole component stress and surface conditions171US 9,057,247 B2Baker Hughes Incorporated · 2015
- Logging and correlation prediction plot in real-time146US 9,518,459 B1Petrolink International Ltd. · 2016
- Measuring drillstem loading and behavior122US 4,715,451 AAtlantic Richfield Company · 1987