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| Number | Title | Issue Date |
| 4387774 | Time recorder for in-hole motors Real time responsive devices are mounted at the inlet to an in-hole motor to measure the interval of time during which drilling fluid circulates through the motor.... | 06/14/1983 |
| 4386666 | In-hole motor drill with locking bit clutch An in-hole motor drill assembly has the rotor of the motor which may be connected to the drill bit through a shaft connected to the rotor, and a housing which may be connected to the running string, and a normally disengaged clutch between said housing an... | 06/07/1983 |
| 4351401 | Earth-boring drill bits The invention relates to the design of earth bore-hole drill bits embodying shaped preformed cutters containing hard abrasive materials, such as diamonds, the cutters being mounted in companion preformed sockets in the hard metal bit matrix. The extent of... | 09/28/1982 |
| 4333857 | Attrition resistant zeolite containing catalyst An improvement in abrasion resistance is obtained in zeolite compositions containing alumina and clay in a matrix by employing comminuted zeolites.... | 06/08/1982 |
| 4332782 | Method of producing pseudoboehmite A pseudoboehmite having properties suitable for incorporation into a matrix for a zeolite containing catalyst and the process for producing the same from an aluminum sulfate derived gel.... | 06/01/1982 |
| 4325409 | Pilot valve for subsea test valve system for deep water A subsea test valve system for wells completed at the floor of the sea includes a safety valve and disconnect mechanism mounted in a blowout preventer at the bottom of the sea and having hydraulic fluid pressure operated means for opening the safety valve... | 04/20/1982 |
| 4325434 | Tubing shut off valve A subsea test valve system for well completed at the floor of the sea includes a safety valve and disconnect mechanism mounted in a blowout preventer at the bottom of the sea and having hydraulic fluid pressure operated means for opening the safety valve ... | 04/20/1982 |
| 4310059 | Composite heavy metal drill collar A composite drill collar for drilling bore holes in earth formations including a structural steel outer jacket having a lower end secured to a lower coupling connectable to a drill bit and an upper end secured to an upper coupling connectable to an adjace... | 01/12/1982 |
| 4133396 | Drilling and casing landing apparatus and method Casing is run into a well bore hole on a running pipe string. Fluid motor and drill apparatus is supported in the casing, with the drill extending below the lower end of the casing to drill the bore hole in advance of the casing. For subsea drilling opera... | 01/09/1979 |
| 4133516 | Shock absorber for well drilling pipe A shock absorber assembly has an outer body connectible at one end in a well drill string and an inner body connectible at one end in the well drilling string, with the bodies telescopically coengaged. Between the bodies is an annular space, filled with h... | 01/09/1979 |
| 4133557 | Preloaded misalignment pipe connector A misalignment conductor for large pipelines or conductor pipes includes an internal, metal seal ring having an external spherical surface which is axially and circumferentially loaded between opposed internal spherical metal surfaces of connector hubs. C... | 01/09/1979 |
| 4133418 | Through the flowline selector A through the flowline or "TFL" tool selector has a base provided with a number of spaced flowline ports and a diverter tube shiftably mounted in a housing for selective communication with the flowline ports. The diverter tube is actuated by a reciprocabl... | 01/09/1979 |
| 4133558 | Misalignment pipe connector A misalignment connector for large pipelines includes an internal, metal seal ring having an external spherical surface which is axially and circumferentially loaded between opposed internal spherical metal surfaces of pipe connector hubs having parts eng... | 01/09/1979 |
| 4057267 | Fluid controlled pipe connectors Pipe connectors particularly useful in securing sections of an underwater marine riser together, including a pin received in a box which are secured to one another by a plurality of lock dogs mounted in the box and movable radially inwardly against a port... | 11/08/1977 |
| 4018714 | Hydrodesulfurization catalyst and process for producing the same A shaped hydrodesulfurization catalyst comprising a nonzeolitic substrate impregnated with a Group VI and a Group VIII catalytic metal and with a Group IV-B promoter and having a high resistance to abrasion and a process of producing the same employing a ... | 04/19/1977 |
| 3982859 | Floating flow restrictors for fluid motors This invention relates to flow restrictors in fluid motors.... | 09/28/1976 |
| 3982858 | Segmented stator for progressive cavity transducer This invention relates to progressing cavity fluid motors with multiple segmented stator elements connected in series to provide a fluid passageway from the input of the initial stator of the series to the output of the terminal stator of the series; the ... | 09/28/1976 |
| 3982797 | Spring-loaded bearings for in-hole motors This invention relates to spring-loaded thrust bearings for shafts subject to a plurality of levels of thrust loads and in its preferred embodiment is applied to in-hole motors. The invention employs a plurality of spring systems, whereby the thrust load ... | 09/28/1976 |
| 3936247 | Floating flow restrictors for fluid motors This invention relates to flow restrictors in fluid motors where the operating fluid also passes through the bearings of the motor.... | 02/03/1976 |
