E21B 47/14
Using acoustic waves
Official title: using acoustic waves
E21B47/14 (Using acoustic waves) appears on 1,975 US grants and 1,914 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,975
- Published applications
- 1,914
- Assignees
- 445
- Inventors
- 2,861
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 13 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 10 | 0 |
| 1981 | 13 | 0 |
| 1982 | 6 | 0 |
| 1983 | 10 | 0 |
| 1984 | 7 | 0 |
| 1985 | 17 | 0 |
| 1986 | 9 | 0 |
| 1987 | 16 | 0 |
| 1988 | 12 | 0 |
| 1989 | 15 | 0 |
| 1990 | 12 | 0 |
| 1991 | 16 | 0 |
| 1992 | 23 | 0 |
| 1993 | 13 | 0 |
| 1994 | 12 | 0 |
| 1995 | 10 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 15 | 0 |
| 1999 | 14 | 0 |
| 2000 | 21 | 0 |
| 2001 | 25 | 2 |
| 2002 | 17 | 29 |
| 2003 | 15 | 25 |
| 2004 | 21 | 34 |
| 2005 | 23 | 32 |
| 2006 | 19 | 35 |
| 2007 | 29 | 38 |
| 2008 | 28 | 37 |
| 2009 | 21 | 34 |
| 2010 | 24 | 40 |
| 2011 | 24 | 34 |
| 2012 | 25 | 50 |
| 2013 | 31 | 68 |
| 2014 | 48 | 74 |
| 2015 | 45 | 123 |
| 2016 | 91 | 171 |
| 2017 | 135 | 171 |
| 2018 | 127 | 176 |
| 2019 | 195 | 170 |
| 2020 | 162 | 118 |
| 2021 | 123 | 111 |
| 2022 | 111 | 97 |
| 2023 | 112 | 85 |
| 2024 | 86 | 54 |
| 2025 | 72 | 62 |
| 2026 | 50 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Geologic velocity modeling framework6 Oct 2026US 12,754,338 B2Schlumberger Technology Corporation
- Interference compensated cross-axial magnetometer measurements22 Sep 2026US 12,742,380 B2Schlumberger Technology Corporation
- Hydrostatically balanced modulator assembly and associated method for mud pulse telemetry22 Sep 2026US 12,742,384 B1
- Robust low frequency seismic bandwidth extension via a deep neural network trained on synthetic seismic data22 Sep 2026US 12,742,900 B2Saudi Arabian Oil Company
- Calculating pull for a stuck drill string15 Sep 2026US 12,735,953 B2Landmark Graphics Corporation
- Method and system for fast pulse telemetry with altered pulse coding8 Oct 2026US 2026/0309028 A1MS Directional, LLC
- Method for obtaining measurement and logging while drilling survey in adverse conditions24 Sep 2026US 2026/0286828 A1MS Directional, LLC
- Downhole positive displacement motor system17 Sep 2026US 2026/0275853 A1Schlumberger Technology Corporation
- Systems and methods for controlling a downhole tool in a downhole environment17 Sep 2026US 2026/0275855 A1Schlumberger Technology Corporation
- Petrophysical interpretation model creation for heterogenous complex reservoirs17 Sep 2026US 2026/0275857 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Acoustic data link and formation property sensor for downhole MWD system315US 5,924,499 AHalliburton Energy Services.Inc. · 1999
- Short hop communication link for downhole MWD system294US 5,160,925 ADevelco, Inc. · 1992
- Drilling system utilizing downhole dysfunctions for determining corrective actions and simulating drilling conditions291US 6,021,377 ABaker Hughes Incorporated · 2000
- Downhole process control method utilizing seismic communication248US 6,584,406 B1Geo-X Systems, Ltd. · 2003
- Closed loop drilling system229US 6,233,524 B1Baker Hughes Incorporated · 2001