C09K 8/493
Additives for reducing or preventing gas migration
C09K8/493 (Additives for reducing or preventing gas migration) appears on 62 US grants and 69 published applications in this corpus.
Search patents in C09K- Granted patents
- 62
- Published applications
- 69
- Assignees
- 31
- Inventors
- 166
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 3 |
| 2006 | 3 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 4 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 7 |
| 2013 | 2 | 0 |
| 2014 | 4 | 3 |
| 2015 | 3 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 4 |
| 2018 | 2 | 5 |
| 2019 | 5 | 6 |
| 2020 | 6 | 8 |
| 2021 | 6 | 7 |
| 2022 | 5 | 5 |
| 2023 | 0 | 1 |
| 2024 | 3 | 2 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composition, preparation method for and application of composition, and self-healing method for well cementing in oil/gas field4 Nov 2025US 12,460,121 B2China Petroleum & Chemical Corporation
- Compositions and methods for carbon dioxide solidification9 Sep 2025US 12,410,355 B2Chevron U.S.A.Inc.
- Hydraulic cement composition, process and use9 Sep 2025US 12,410,356 B2Petroleo Brasileiro S.A. - Petrobras
- Hydrocarbon swelling particles for wellbore cementing29 Apr 2025US 12,286,586 B2Synthomer Inc.
- Hydraulic cement composition, process and use14 May 2024US 11,981,860 B2Petroleo Brasileiro S.A. - Petrobras
- Nanomodified Polymer with Cement Hydration-Matching Polymerization Kinetics to Modify Cement for Wellbore Applications and Methods of Makin14 May 2026US 2026/0132327 A1TS-NANO, Inc.
- Thermite composition for a process of plugging and abandoning a petroleum well and process of plugging and abandoning a petroleum well using said thermite composition12 Feb 2026US 2026/0042950 A1Ptt Exploration and Production Public Company Limited
- Hydrocarbon swelling particles for wellbore cementing19 Jun 2025US 2025/0197712 A1Synthomer Inc.
- Hydraulic cement composition, process and use22 Aug 2024US 2024/0279530 A1Petroleo Brasileiro S.A. - Petrobras
- Compositions and methods for carbon dioxide solidification29 Feb 2024US 2024/0067860 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Method for control of fluid loss and gas migration in well cementing100US 5,988,279 AFritz Industries, Inc. · 1999
- Latex compositions comprising pozzolan and/or cement kiln dust and methods of use87US 7,789,150 B2Halliburton Energy Services, Inc. · 2010
- Method for control of gas migration in well cementing73US 5,339,903 AHalliburton Company · 1994
- Composition for controlling wellbore fluid and gas invasion and method for using same70US 6,664,215 B12003
- Crack-resistant cement composition68US 10,113,389 B2Halliburton Energy Services.Inc. · 2018