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Stelzer Roland B, Park Jack H, Rundell Herbert A: Method and apparatus for transmission of data from drill bit in wellbore while drilling. Texaco, Whaley T H, Ries C G, April 23, 1974: US3805606 (18 worldwide citation)

A method and several mechanisms for carrying out the method are disclosed. The method of (1) generating torque pulses by engaging a drill bit on the lower end of a rotating drill string in the bottom of a wellbore, and (2) monitoring the top of the drill string for the torque pulses therein may be p ...


2
Allen Joseph C, Tate Jack F, Stelzer Roland B: Miscible displacement of petroleum using carbon disulfide and a hydrocarbon solvent. Texaco, Whaley Thomas H, Ries C G, November 12, 1974: US3847221 (13 worldwide citation)

A miscible displacement process for the recovery of petroleum from a petroleum bearing formation is performed in situ by the use of a solvent system miscible with the petroleum, the solvent system comprising carbon disulfide and a hydrocarbon solvent.


3
Allen Joseph C, Tate Jack F, Stelzer Roland B: Miscible displacement of petroleum using sequential addition of carbon disulfide and a hydrocarbon solvent. Texaco, Whaley Thomas H, Ries C G, November 12, 1974: US3847220 (1 worldwide citation)

A miscible displacement process for the recovery of petroleum from a petroleum bearing formation is performed in situ by the use of a solvent system miscible with the petroleum, the solvent system comprising sequential slugs of carbon disulfide and a hydrocarbon solvent.


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