Schlumberger Technology Corp
SchlumbergActive Patents
0
Total Holdings
26
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4464569A | Method and apparatus for spectroscopic analysis of a geolog… | Expired / Lapsed | 1981-06-19 | 1984-08-07 | 23 | Details |
| US4355310A | Well logging communication system | Expired / Lapsed | 1979-08-06 | 1982-10-19 | 36 | Details |
| US4267727A | Pressure and temperature compensation means for a downhole … | Expired / Lapsed | 1979-09-21 | 1981-05-19 | 6 | Details |
| US4012712A | System for telemetering well logging data | Expired / Lapsed | 1975-03-31 | 1977-03-15 | 24 | Details |
| US3986163A | Methods and apparatus for recording well logging measuremen… | Expired / Lapsed | 1974-11-04 | 1976-10-12 | 91 | Details |
| US3967647A | Subsea control valve apparatus | Expired / Lapsed | 1974-04-22 | 1976-07-06 | 25 | Details |
| US3909603A | Method of processing production well logging data | Expired / Lapsed | 1971-08-11 | 1975-09-30 | 26 | Details |
| US3731530A | Apparatus for determining the gas content of drilling muds | Expired / Lapsed | 1972-03-20 | 1973-05-08 | 23 | Details |
| US3707700A | Telemetry system incorporating synchromization of receiver … | Expired / Lapsed | 1969-08-21 | 1972-12-26 | 13 | Details |
| US3599156A | Methods and apparatus for transmitting data between remote … | Expired / Lapsed | 1968-02-06 | 1971-08-10 | 56 | Details |
| US3564523A | Multiple track magnetic tape recording apparatus | Expired / Lapsed | 1967-11-22 | 1971-02-16 | 0 | Details |
| US3497958A | Systems and methods for determining the position of a tool … | Expired / Lapsed | 1966-05-02 | 1970-03-03 | 0 | Details |
| US3490286A | Electrical apparatus for well tools | Expired / Lapsed | 1967-08-03 | 1970-01-20 | 0 | Details |
| US3490150A | Systems and methods for determining the position of a tool … | Expired / Lapsed | 1966-05-02 | 1970-01-20 | 0 | Details |
| US3488659A | Methods and apparatus for recording well logging signals | Expired / Lapsed | 1967-12-27 | 1970-01-06 | 0 | Details |
| US3488661A | Methods and apparatus for recording well logging signals | Expired / Lapsed | 1967-12-27 | 1970-01-06 | 0 | Details |
| US3465820A | Retainer packers having a rotating valve | Expired / Lapsed | 1967-10-05 | 1969-09-09 | 0 | Details |
| US3457544A | Methods and apparatus for recording well logging data | Expired / Lapsed | 1968-02-06 | 1969-07-22 | 0 | Details |
| US3434105A | Well logging systems | Expired / Lapsed | 1967-03-02 | 1969-03-18 | 0 | Details |
| US3402601A | Tension measuring device | Expired / Lapsed | 1965-10-28 | 1968-09-24 | 0 | Details |
| US3396448A | Methods for manufacture of flexible valve elements | Expired / Lapsed | 1965-09-29 | 1968-08-13 | 0 | Details |
| US3388375A | Magnetic tape recording methods and apparatus for well logg… | Expired / Lapsed | 1965-10-26 | 1968-06-11 | 0 | Details |
| US3332495A | Full-opening well tools | Expired / Lapsed | 1965-02-25 | 1967-07-25 | 1 | Details |
| US3333237A | Acoustic well logging display methods and apparatus | Expired / Lapsed | 1964-08-25 | 1967-07-25 | 4 | Details |
| US3329931A | Methods and systems for recording and processing well loggi… | Expired / Lapsed | 1962-12-20 | 1967-07-04 | 2 | Details |
| US3327784A | Apparatus for releasably connecting well tools to a support… | Expired / Lapsed | 1964-12-11 | 1967-06-27 | 1 | Details |