Halliburton Logging Services, Inc.
115Patents
0Active
115Granted
41Portfolio score
Filing activity: May 3, 1985 → Sep 26, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5428293A | Logging while drilling apparatus with multiple depth of resistivity investigation | Physics | 237 | Expired |
| US5367911A | Device for sensing fluid behavior | Physics | 157 | Expired |
| US4842059A | Flex joint incorporating enclosed conductors | Mechanical Engineering; Lighting; Heating | 152 | Expired |
| US5230244A | Formation flush pump system for use in a wireline formation test tool | Fixed Constructions | 75 | Expired |
| US5045795A | Azimuthally oriented coil array for MWD resistivity logging | Physics | 75 | Expired |
| US5184678A | Acoustic flow stimulation method and apparatus | Fixed Constructions | 73 | Expired |
| US4980643A | Induction logging and apparatus utilizing skew signal measurements in dipping beds | Physics | 62 | Expired |
| US5115198A | Pulsed electromagnetic dipmeter method and apparatus employing coils with finite spacing | Physics | 59 | Expired |
| US5038107A | Method and apparatus for making induction measurements through casing | Physics | 56 | Expired |
| US5132903A | Dielectric measuring apparatus for determining oil and water mixtures in a well borehole | Fixed Constructions | 51 | Expired |
| US5092056A | Reversed leaf spring energizing system for wellbore caliper arms | Fixed Constructions | 50 | Expired |
| US4879900A | Hydraulic system in formation test tools having a hydraulic pad pressure priority system and high speed extension of the setting pistons | Fixed Constructions | 49 | Expired |
| US5065099A | Coil array for a high resolution induction logging tool and method of logging an earth formation | Physics | 47 | Expired |
| US5040619A | Wireline supported perforating gun enabling oriented perforations | Fixed Constructions | 44 | Expired |
| US5211714A | Wireline supported perforating gun enabling oriented perforations | Fixed Constructions | 43 | Expired |
| US5188191A | Shock isolation sub for use with downhole explosive actuated tools | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5357483A | Downhole tool | Fixed Constructions | 41 | Expired |
| US5229765A | SP noise cancellation technique | Physics | 39 | Expired |
| US5065619A | Method for testing a cased hole formation | Fixed Constructions | 39 | Expired |
| US5203723A | Low cost plastic hermetic electrical connectors for high pressure application | Electricity | 38 | Expired |
| US5189645A | Downhole tool | Fixed Constructions | 36 | Expired |
| US4947683A | Pulsed ultrasonic doppler borehole fluid measuring apparatus | Physics | 36 | Expired |
| US5406078A | Induced gamma ray spectorscopy well logging system | Physics | 36 | Expired |
| US4944225A | Method and apparatus for firing exploding foil initiators over long firing lines | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US5159978A | Connecting apparatus for logging tools including electrical feedthrough and isolation system with bridle assembly | Physics | 34 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.