Earl Webb
29Patents
13h-index
43Co-inventors
81Inventor score
Filing activity: Jul 19, 1995 → Jan 14, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6976507B1 | Apparatus for creating pulsating fluid flow | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5641021A | Well casing fill apparatus and method | Fixed Constructions | 82 | Expired |
| US7405998B2 | Method and apparatus for generating fluid pressure pulses | Fixed Constructions | 76 | Active |
| US5829526A | Method and apparatus for placing and cementing casing in horizontal wells | Fixed Constructions | 66 | Expired |
| US7673688B1 | Casing wiping dart with filtering layer | Fixed Constructions | 44 | Active |
| US9359863B2 | Downhole plug apparatus | Fixed Constructions | 40 | Active |
| US5564500A | Apparatus and method for removing gelled drilling fluid and filter cake from the side of a well bore | Fixed Constructions | 28 | 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 |
| US6772835B2 | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring | Fixed Constructions | 15 | Expired |
| US5711375A | Well stabilization tools and methods | Fixed Constructions | 15 | Expired |
| US6796377B2 | Anti-rotation apparatus for limiting rotation of cementing plugs | Fixed Constructions | 14 | Expired |
| US6880636B2 | Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring | Fixed Constructions | 13 | Expired |
| US8276665B2 | Plug release apparatus | Fixed Constructions | 12 | Active |
| US7648179B2 | Connector having offset radius grooves | Fixed Constructions | 12 | Active |
| US7290612B2 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore | Fixed Constructions | 12 | Expired |
| US5823273A | Well stabilization tools and methods | Fixed Constructions | 11 | Expired |
| US7841417B2 | Use of swellable material in an annular seal element to prevent leakage in a subterranean well | Fixed Constructions | 11 | Active |
| US6820695B2 | Snap-lock seal for seal valve assembly | Fixed Constructions | 8 | Expired |
| US8127859B2 | Use of swellable material in an annular seal element to prevent leakage in a subterranean well | Fixed Constructions | 8 | Active |
| US7225871B2 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore | Fixed Constructions | 6 | Expired |
| US9835008B2 | Method and apparatus for retaining weighted fluid in a tubular section | Fixed Constructions | 5 | Active |
| US7108068B2 | Floating plate back pressure valve assembly | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6997253B2 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | Fixed Constructions | 2 | Expired |
| US7204304B2 | Removable surface pack-off device for reverse cementing applications | Fixed Constructions | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.