Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056061 | Apparatus for completing a subterranean well and associated methods | Ralph H. Echols | 2000-05-02 |
| 6053248 | Methods of completing wells utilizing wellbore equipment positioning apparatus | — | 2000-04-25 |
| 6047773 | Apparatus and methods for stimulating a subterranean well | Thomas A. Zeltmann, Alireza Rahimi | 2000-04-11 |
| 6003607 | Wellbore equipment positioning apparatus and associated methods of completing wells | Karluf Hagen, Ralph H. Echols, Andrew Penno | 1999-12-21 |
| 5988271 | Proppant slurry screen apparatus and methods of using same | Dean S. Oneal | 1999-11-23 |
| 5971070 | Apparatus for completing a subterranean well and associated methods | Ralph H. Echols | 1999-10-26 |
| 5964296 | Formation fracturing and gravel packing tool | — | 1999-10-12 |
| 5954133 | Methods of completing wells utilizing wellbore equipment positioning apparatus | — | 1999-09-21 |
| 5938925 | Progressive gap sand control screen and process for manufacturing the same | Syed Hamid, Ralph H. Echols | 1999-08-17 |
| 5924487 | Proppant slurry screen apparatus and methods of using same | Dean S. Oneal | 1999-07-20 |
| 5921318 | Method and apparatus for treating multiple production zones | — | 1999-07-13 |
| 5857521 | Method of using a retrievable screen apparatus | Ralph H. Echols, Jim Venditto | 1999-01-12 |
| 5850875 | Method of deploying a well screen and associated apparatus therefor | Derek J. McCulloch | 1998-12-22 |
| 5829522 | Sand control screen having increased erosion and collapse resistance | Anthony M. Badalamenti | 1998-11-03 |
| 5762137 | Retrievable screen apparatus and methods of using same | Ralph H. Echols, Jim Venditto | 1998-06-09 |
| 5641023 | Shifting tool for a subterranean completion structure | Dhirajlal C. Patel, Ronnie D. Finley | 1997-06-24 |
| 5443117 | Frac pack flow sub | — | 1995-08-22 |
| 5421414 | Siphon string assembly compatible for use with subsurface safety devices within a wellbore | Andrew R. Lane, Rufus Mullins, Jr., Ronald C. Sadlin | 1995-06-06 |
| 5415441 | Push-on coupling apparatus for tubular well completion structures | Marion D. Kilgore, Ralph H. Echols | 1995-05-16 |
| 5413180 | One trip backwash/sand control system with extendable washpipe isolation | Henry L. Restarick, Ralph H. Echols, Phillip T. Thomas, Dhirajlal C. Patel | 1995-05-09 |
| 5375662 | Hydraulic setting sleeve | Ralph H. Echols, Phillip T. Thomas | 1994-12-27 |
| 5343949 | Isolation washpipe for earth well completions and method for use in gravel packing a well | Dhirajlal C. Patel, Timothy F. LaBruyere | 1994-09-06 |
| 5332045 | Apparatus and method for placing and for backwashing well filtration devices in uncased well bores | Henry L. Restarick | 1994-07-26 |
| 5318117 | Non-rotatable, straight pull shearable packer plug | Ralph H. Echols | 1994-06-07 |
| 5311938 | Retrievable packer for high temperature, high pressure service | James D. Hendrickson, William David Henderson | 1994-05-17 |