1
Quichaud Claude Jean, Raynaud Michel H, Lutz Jean: Method and apparatus for measuring lithological characteristics of rocks. Societe Anonyme dite Societe Nationale des Petroles d Aquitaine, December 7, 1971: US3626482 (44 worldwide citation)

A method by which physical and mechanical characteristics of rocks are measured during drilling, comprises picking up a signal representing the vibrations of a train of rods forming part of drilling gear, selecting the components of the said signal which, after peak-clipping, are in a frequency band ...


2
Le Peuvedic Jean Pierre, Quichaud Claude: Hydraulically controlled device for modulating the mud. Societe Anonyme dite Societe Nationale Des Petroles D Aquitaine, June 5, 1973: US3737843 (29 worldwide citation)

A hydraulically controlled device to transmit measurements taken at the bottom of a well to the surface, in the form of pressure modulations created by periodical restrictions on the passage of the drilling fluid, characterized by the use of a servovalve which operates the drilling fluid flow-restri ...


3
Lucien Gerbel, Michel Waeselynck: Apparatus for recording in a digital form signals detected during magneto-telluric prospection. Societe Anonyme dite Societe Nationale des Petroles d Aquitaine, Bacon & Thomas, October 12, 1976: US03986207 (17 worldwide citation)

A recording apparatus for recording digital signals corresponding to components of telluric and magnetic fields. The apparatus comprises an analog input stage, a low pass filter stage, an analog output stage, an analog multiplexer and an analog-to-digital converter and recording system for recording ...


4
Reulet Philippe, Pfister Alain, Tellier Jacques, Blanc Jean Henry, Jorgensen Kirsten Borre, Bohlbro Hans: Process for the preparation of unsaturated alphatic nitriles by the oxidation of olefins. Societe Anonyme dite Societe Nationale Des Petroles D Aquitaine, July 18, 1972: US3678091 (8 worldwide citation)

A process for the preparation of unsaturated aliphatic nitriles by the oxidation of olefins in the presence of ammonia, consists in reacting the hydrocarbon or hydrocarbons with oxygen and ammonia in the presence of a catalyst system containing the elements phosphorus, vanadium and molybdenum in the ...


5
Guillaume Andral, Michel Carmassi, Bernard Louvel, Jacques Maurice, Georges Vandesande: Process for automated regulation of sulfur production units. Societe Anonyme dite Societe Nationale Des Petroles D Aquitaine, David A Blumenthal, Arthur Schwartz, January 20, 1976: US03933992 (7 worldwide citation)

A process for automated regulation of a unit producing sulphur by oxidation of hydrogen sulphide, in which the flow of gas carrying oxygen into the unit is regulated so as to keep an operating parameter, based on measurement of the sulphurous compound of the residual gases, level with a reference va ...


6
Esclamadon Christian, Labat Yves, Signouret Jean Baptiste: New and useful dithiols, their preparation and compositions made from them. Societe Anonyme dite Societe Nationale des Petroles D Aquitaine, February 27, 1973: US3718700 (6 worldwide citation)

New dithiol compounds have formal and thioether groups and the general formulaHS--R--S--(CH.sub.2).sub.3 --O--CH.sub.2 --O--(CH.sub.2).sub.3 --S--R--SHin which R is a divalent radical of from one to 10 carbon atoms; it can be a substituted or unsubstituted, linear or branched aliphatic group, a cycl ...


7
Falxa Henri: Skimming device. Societe Anonyme dite Societe Nationale des Petroles d Aquitaine, Brisebois & Kruger, April 8, 1975: US3876540 (6 worldwide citation)

This invention concerns the separation and extraction of the upper layer of liquids stored in tanks or pools.The device consists of a shallow funnel, submerged in the liquid and equipped with means with draining off the extracted liquid, and characterized by the fact that the level of submersion, go ...


8
Le Peuvedic Jean Pierre, Tinchon Jacques: Sensing device to measure the speed of rotation of drilling turbines. Societe Anonyme dite Societe Nationale des Petroles d Aquitaine Tour, Brisebois & Kruger, July 9, 1974: US3822589 (4 worldwide citation)

This invention concerns a sensing device to measure the speed of rotation of a drilling turbine, used with a device to transmit signals from the bottom of the well to the surface.This sensing device consists of a detector working with a mobile magnetic flux transducer, a tube containing the leads, a ...


9
Barbier Maurice: Seismic exploration. Societe Anonyme dite Societe Nationale Des Petroles D Aquitaine, May 29, 1973: US3736554 (4 worldwide citation)

Seismic exploration is effected using a seismic transmitter and at least one receiver which are moved in a continuous manner at a constant distance apart while the transmitter transmits a continuous series of long signals and the received signals are recorded without interruption. The transmitted si ...


10
Lucas George: New photochemical cycloalkane oximation process. Societe Anonyme dite Societe Nationale Des Petroles D Aquitaine, Schuyler Birch Swindler McKie & Beckett, December 10, 1974: US3853729 (3 worldwide citation)

A process for photo-oximating cycloalkanes by means of a gaseous nitrosating agent, in which the agent is fed into a radiation zone, without any cycloalkane present, the activated radicals are transferred immediately to an adjoining reaction zone containing the cycloalkane, and the oxime is produced ...