Henry E. Rogers
90Patents
23h-index
71Co-inventors
91Inventor score
Filing activity: Sep 14, 1994 → Jul 31, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7322412B2 | Casing shoes and methods of reverse-circulation cementing of casing | Fixed Constructions | 173 | Expired |
| US7451817B2 | Methods of using casing strings in subterranean cementing operations | Emerging Cross-Sectional Technologies | 90 | Active |
| US7303014B2 | Casing strings and methods of using such strings in subterranean cementing operations | Emerging Cross-Sectional Technologies | 82 | Expired |
| US5641021A | Well casing fill apparatus and method | Fixed Constructions | 82 | Expired |
| US7503399B2 | Casing shoes and methods of reverse-circulation cementing of casing | Fixed Constructions | 69 | Active |
| US6513598B2 | Drillable floating equipment and method of eliminating bit trips by using drillable materials for the construction of shoe tracks | Fixed Constructions | 68 | Expired |
| US5829526A | Method and apparatus for placing and cementing casing in horizontal wells | Fixed Constructions | 66 | Expired |
| US5647434A | Floating apparatus for well casing | Fixed Constructions | 63 | Expired |
| US6547007B2 | PDF valve | Fixed Constructions | 61 | Expired |
| US6622798B1 | Method and apparatus for maintaining a fluid column in a wellbore annulus | Fixed Constructions | 61 | Expired |
| US6318472A | Hydraulic set liner hanger setting mechanism and method | Fixed Constructions | 61 | Expired |
| US7621336B2 | Casing shoes and methods of reverse-circulation cementing of casing | Fixed Constructions | 49 | Active |
| US6758281B2 | Methods and apparatus for creating a downhole buoyant casing chamber | Fixed Constructions | 46 | Expired |
| US6810958B2 | Circulating cementing collar and method | Fixed Constructions | 43 | Expired |
| US5472053A | Leakproof floating apparatus and method for fabricating said apparatus | Fixed Constructions | 37 | Expired |
| US7303008B2 | Methods and systems for reverse-circulation cementing in subterranean formations | Fixed Constructions | 35 | Expired |
| US6505685B1 | Methods and apparatus for creating a downhole buoyant casing chamber | Fixed Constructions | 35 | Expired |
| US7404440B2 | Methods of using casing strings in subterranean cementing operations | Emerging Cross-Sectional Technologies | 31 | Active |
| US5564500A | Apparatus and method for removing gelled drilling fluid and filter cake from the side of a well bore | Fixed Constructions | 28 | Expired |
| US7252147B2 | Cementing methods and systems for initiating fluid flow with reduced pumping pressure | Fixed Constructions | 28 | Expired |
| US7409991B2 | Methods of using casing strings in subterranean cementing operations | Emerging Cross-Sectional Technologies | 25 | Active |
| US7290611B2 | Methods and systems for cementing wells that lack surface casing | Fixed Constructions | 24 | Expired |
| US7357181B2 | Apparatus for autofill deactivation of float equipment and method of reverse cementing | Fixed Constructions | 24 | Expired |
| US6957704B2 | Limit clamp for use with casing attachments | Fixed Constructions | 21 | Expired |
| US7472752B2 | Apparatus and method for forming multiple plugs in a wellbore | Fixed Constructions | 21 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.