| Patent No. | Patent Title: |
| 6308780 | Method for regaining mud circulation in operating well and device... |
| 5549160 | Downhole progressing cavity pump rotor valve |
| 5492174 | Rod guide with enhanced erodable volume |
| 5479988 | Mud check valves in drilling apparatus (wells) |
| 5474142 | Automatic drilling system |
| 5474127 | Annular safety system for oil well |
| 5469925 | Downhole tube turning tool |
| 5467833 | System for lifting tubulars and equipment below the main deck of ... |
| 5467834 | Method and apparatus for short radius drilling of curved borehole... |
| 5465799 | System and method for precision downhole tool-face setting and su... |
| 5462129 | Method and apparatus for erosive stimulation of open hole formati... |
| 5462128 | Cutter bit for use in drilling operations |
| 5460223 | Method and system for oil recovery |
| 5460231 | Device and method for augering a conical hole in solid media |
| 5458196 | Through tubing gun hanger |
| 5458198 | Method and apparatus for oil or gas well cleaning |
| 5456314 | Wellhead annulus seal |
| 5456326 | Apparatus and method for installing open-ended tubular members ax... |
| 5454420 | Method and apparatus for rotating downhole tool in wellbore |
| 5454436 | Method of warning of pipe sticking during drilling operations |
| 5452760 | Well pump tubing scrapers |
| 5452763 | Method and apparatus for generating gas in a drilled borehole |
| 5450904 | Adjustable tieback sub |
| 5450901 | Apparatus and process for producing and reinjecting gas |
| 5449045 | Drive point device |
| 5449047 | Automatic control of drilling system |
| 5447196 | Hydraulic jar |
| 5445229 | Method and apparatus for drilling, cracking, and withdrawing eart... |
| 5445225 | Choke for enhanced gas and oil well production |
| 5443121 | Gravel-packing apparatus & method |
| 5443124 | Hydraulic port collar |
| 5443129 | Apparatus and method for orienting and setting a hydraulical... |
| 5439061 | Adjustable surface well head casing hanger |
| 5439067 | Rock bit with enhanced fluid return area |
| 5439051 | Lateral connector receptacle |
| 5439053 | Reinforcing slat for inflatable packer |
| 5437343 | Diamond cutters having modified cutting edge geometry and drill b... |
| 5437330 | Liner cementing system and method |
| 5435385 | Integrated wellhead tubing string |
| 5435390 | Remote control for a plug-dropping head |
Quotables 
PatentStorm News
