摘要:
A method for determining failure modes of a transceiver (100) includes applying a control signal (121) to a transmitter (130) of transceiver (100). The power level of a transmit signal (131) is proportional to a predetermined voltage level of control signal (121), and is detected by a detector (132) which correspondingly produces a transmit power level indicator (133). A portion of transmit signal (131) is coupled to produce a coupled transmit signal (111) which is received by a receiver (110) of transceiver (100). Receiver (111) produces a receive signal strength indicator (112) corresponding to the power level of coupled transmit signal (111). Voltage levels of received signal strength indicator (112), transmit power level indicator (133) and predetermined voltage level of control signal (121) are stored in a memory means 125, and compared in a controller 126 to determine failure modes of receiver (110) and transmitter (130).
摘要:
Arrangements are provided for assembling multiple substrates for coating within a fluidized bed coater so as to deposit a coating of uniform thickness across the entire exterior surface thereof. One embodiment includes a method for coating orthopedic implants having convex and concave surfaces with pyrocarbon by pyrolytic decomposition of a hydrocarbon.
摘要:
A drill bit having a plurality of cutters on its lower surface, each of which can having a plurality of PDC cutter elements disposed thereon. The cutting surface on each of the cutters is mounted in in an orientation that allows drilling of oversize boreholes which enables the drill bit to be turned more easily to facilitate the boreholes being drilled on a smaller radius. The placement of the cutters on each of the blades enables the drill bit to drill both vertically and laterally.
摘要:
A drill bit is described herein, having a first bit face with a first plurality of cutters oriented to bore in a first direction, and a second bit face with a second plurality of cutters oriented to bore in one or more second directions. The pluralities of cutters enable functional articulation of the drill bit, such that the drill bit can change direction within a borehole without requiring removal of the drill bit. The drill bit can thereby drill in a downhole direction and lateral directions, can back ream through the borehole, and can provide the borehole with one or more oversized regions, as desired.
摘要:
A drilling stabilizer having a body and a plurality of blades integrally cast from tungsten carbide particles bound together with a heated metal binder, for use in drilling oil and gas wells, has a first box end and a second pin end at the distal end of the stabilizer. A plurality of PDC cutters are mounted on the top end of the stabilizer to allow the stabilizer to be used as a reamer when pulling the stabilizer out of the borehole. A steel tube is formed within the interior of the stabilizer in the molding process and which allows the pin end to have steel threads and the box end to also have steel threads to facilitate the makeup of the stabilizer with either the steel threads of a drill bit or the steel threads of joints of drill pipe.
摘要:
Arrangements are provided for assembling multiple substrates for coating within a fluidized bed coater so as to deposit a coating of uniform thickness across the entire exterior surface thereof. One embodiment includes a method for coating orthopedic implants having convex and concave surfaces with pyrocarbon by pyrolytic decomposition of a hydrocarbon.
摘要:
A drill bit having a plurality of cutters on its lower surface, each of which can having a plurality of PDC cutter elements disposed thereon. The cutting surface on each of the cutters is mounted in in an orientation that allows drilling of oversize boreholes which enables the drill bit to be turned more easily to facilitate the boreholes being drilled on a smaller radius. The placement of the cutters on each of the blades enables the drill bit to drill both vertically and laterally.
摘要:
A drill collar formed substantially entirely from a metal matrix material and one or more metal alloys, the drill collar being produced through a molding process. The metal matrix material of the drill collar minimizes lateral movement and vibration during drilling operations, while providing a weight greater than that of conventional drill collar materials, thereby enabling construction of drill collars and bottom hole assemblies having a reduced length.
摘要:
A drill collar formed substantially entirely from a metal matrix material and one or more metal alloys is provided, the drill collar being produced through a molding process. The metal matrix material of the drill collar minimizes lateral movement and vibration during drilling operations, while providing a weight greater than that of conventional drill collar materials, thereby enabling construction of drill collars and bottom hole assemblies having a reduced length.
摘要:
A drilling stabilizer having a body and a plurality of blades integrally cast from tungsten carbide particles bound together with a heated metal binder, for use in drilling oil and gas wells, has a first box end and a second pin end at the distal end of the stabilizer. A plurality a PDC cutters are mounted on the top end of the stabilizer to allow the stabilizer to be used as a reamer when pulling the stabilizer out of the borehole. A steel tube is formed within the interior of the stabilizer in the molding process and which allows the pin end to have steel threads and the box end to also have steel threads to facilitate the makeup of the stabilizer with either the steel threads of a drill bit or the steel threads of joints of drill pipe.