摘要:
In aspects, the disclosure provides a drilling motor that includes a stator and a rotor disposed in the stator, wherein the inner surface of the stator and/or outer surface of the stator includes a coating of a diamond-like carbon material.
摘要:
A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.
摘要:
A roller cone bit is provided that includes a companion ring positioned adjacent to the seal, wherein the companion ring is formed of a porous material that is compatible with the fluid lubricating the interface between the roller cone and the bearing pin.
摘要:
A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.
摘要:
A roller cone bit is provided that includes a companion ring positioned adjacent to the seal, wherein the companion ring is formed of a porous material that is compatible with the fluid lubricating the interface between the roller cone and the bearing pin.
摘要:
A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.
摘要:
A drill bit for drilling a wellbore, the drill bit having a body and at least one bearing. A rotary cone is rotatably attached to the bit body at the bearing. A lubricant reservoir is located in an inner portion of the bit body and is in fluid communication with the bearing. A communication port leads from the inner portion of the bit body to the exterior of the bit body. A fiber reinforced elastomeric pressure compensator diaphragm separates lubricant in the lubricant reservoir from the communication port.
摘要:
A metal face seal for an earth boring drill bit where the drill bit has a bit body, at least one bit leg, a bearing pin on each bit leg, and a cone rotatably mounted on each bearing pin. The metal face seal is located in the cavity formed between the interior surface of the cone and the bearing pin. The metal face seal consists of a rigid seal ring having a forward surface that engages a rotating seal surface of the cone. An energizer ring biases the rigid seal ring toward the rotating seal surface. A secondary seal engages the bearing pin surface, the energizer ring, and the rigid seal ring. The secondary seal ring has a protuberance on its forward side for filling void spaces between the energizer ring, the rigid seal ring, and the secondary seal ring.
摘要:
Fluid injection devices with surface acoustic wave (SAW) devices and methods of analyzing and cleaning the same. The fluid injection device comprises a fluid injection element and a surface acoustic wave device with slanted fingers inter-digital transducers on the fluid injection element. The fluid injection element comprises a fluid chamber in a substrate with a structural layer thereon. At least one fluid actuator is disposed on the structural layer opposing the fluid chamber. A nozzle adjacent to the at least one fluid actuator passes through the structural layer and connects the fluid chamber.
摘要:
A fluid injection device integrating a piezoelectric sensor, a fluid injection apparatus and a method for analyzing fluid content in a fluid injection device. The fluid injection device comprises a fluid injector and a piezoelectric sensor. The fluid injector comprises a plurality of fluid chambers formed in a substrate for receiving fluid. A structural layer is disposed on the substrate and the plurality of fluid chambers. At least one fluid actuator is disposed on the structural layer opposing each fluid chamber. A nozzle is adjacent to the at least one fluid actuator and connecting each fluid chamber through the structural layer. The piezoelectric sensor id disposed on the structural layer to analyze fluid content in each fluid chamber.