Weatherford/Lamb, Inc.
1,210Patents
421Active
1,210Granted
56Portfolio score
Filing activity: Apr 19, 1976 → Jul 7, 2014 · 300 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6325148A | Tools and methods for use with expandable tubulars | Fixed Constructions | 320 | Expired |
| US6457532B1 | Procedures and equipment for profiling and jointing of pipes | Emerging Cross-Sectional Technologies | 318 | Expired |
| US8083504B2 | Quintuplex mud pump | Mechanical Engineering; Lighting; Heating | 289 | Active |
| US6425444B1 | Method and apparatus for downhole sealing | Fixed Constructions | 252 | Expired |
| US7350582B2 | Wellbore tool with disintegratable components and method of controlling flow | Fixed Constructions | 246 | Expired |
| US5785120A | Tubular patch | Fixed Constructions | 238 | Expired |
| US6543552B1 | Method and apparatus for drilling and lining a wellbore | Emerging Cross-Sectional Technologies | 236 | Expired |
| US6536520B1 | Top drive casing system | Fixed Constructions | 213 | Expired |
| US5887655A | Wellbore milling and drilling | Fixed Constructions | 190 | Expired |
| US6648075B2 | Method and apparatus for expandable liner hanger with bypass | Fixed Constructions | 182 | Expired |
| US6834725B2 | Reinforced swelling elastomer seal element on expandable tubular | Emerging Cross-Sectional Technologies | 178 | Expired |
| US6371210B1 | Flow control apparatus for use in a wellbore | Fixed Constructions | 172 | Expired |
| US6527049B2 | Apparatus and method for isolating a section of tubing | Emerging Cross-Sectional Technologies | 171 | Expired |
| US6578630B2 | Apparatus and methods for expanding tubulars in a wellbore | Fixed Constructions | 170 | Expired |
| US7252152B2 | Methods and apparatus for actuating a downhole tool | Fixed Constructions | 167 | Expired |
| US5887668A | Wellbore milling-- drilling | Fixed Constructions | 166 | Expired |
| US6142230A | Wellbore tubular patch system | Fixed Constructions | 164 | Expired |
| US6668937B1 | Pipe assembly with a plurality of outlets for use in a wellbore and method for running such a pipe assembly | Fixed Constructions | 162 | Expired |
| US6742596B2 | Apparatus and methods for tubular makeup interlock | Fixed Constructions | 159 | Expired |
| US7798236B2 | Wellbore tool with disintegratable components | Fixed Constructions | 155 | Active |
| US6712153B2 | Resin impregnated continuous fiber plug with non-metallic element system | Emerging Cross-Sectional Technologies | 155 | Expired |
| US6457533B1 | Downhole tubing | Fixed Constructions | 153 | Expired |
| US6454013B1 | Expandable downhole tubing | Fixed Constructions | 152 | Expired |
| US6527047B1 | Method and apparatus for connecting tubulars using a top drive | Fixed Constructions | 149 | Expired |
| US6873267B1 | Methods and apparatus for monitoring and controlling oil and gas production wells from a remote location | Fixed Constructions | 148 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.