摘要:
A downhole tool includes a tool body having an outer surface portion and an inner surface portion and a recess formed in one of the outer surface portion and inner surface portion. At least one removable electronic component access member is detachably mounted to the tool body. The removable electronic component access member provides access to electronic components housed in the recess. A metallic seal is provided on at least one of the tool body and the removable electronic component access member. The metallic seal prevents fluid ingress into the recess through the at least one removable electronic component access member.
摘要:
An apparatus for communicating a signal to or from a downhole tool includes a drill pipe configured to be rotated to drill a borehole, a tubular under axial tension and secured in the drill pipe, and a retention device secured to the tubular and configured to maintain the tubular under the axial tension. The retention device includes a portion extending from a body of the device in a direction that is non-inward-radial with respect to a longitudinal axis of the drill pipe. The apparatus further includes a transmission line disposed in the tubular and in an opening of the retention device and in communication with the downhole tool.
摘要:
A wired pipe transmission line for disposal in a wired pipe segment for use in subterranean drilling. The transmission line includes an assembly including an inner conductor and a dielectric layer including silicon dioxide (SiO2) insulating material surrounding the inner conductor and a protective layer that is formed of a rigid material and surrounding the dielectric layer. Also included is a method of forming a wired pipe transmission line.
摘要:
An apparatus for retaining electronic components in a downhole component coupling mechanism includes: a power supply frame including a first housing configured to retain a power supply therein and isolate the power supply from downhole fluids, the power supply frame configured to be disposed in and constrained axially by a coupling assembly of a first downhole component and a second downhole component; an electronic component disposed in a second housing in the coupling assembly, the electronic component located external to the power supply frame; and a connector configured to transmit electric power from the power supply to the electronic component to supply electrical power to the electronic component.
摘要:
In one aspect, the disclosure provides a method of drilling a wellbore, which method, in one embodiment, includes the features of drilling the wellbore with a drill string that includes a bypass device having a fluid passage therethrough by supplying a fluid through the bypass device, wherein the drilling fluid circulates to the surface via an annulus between the drill string and the wellbore; defining a time period (locking time); initiating a selected drilling parameter; detecting downhole the selected drilling parameter and one of the second flow rate and a differential pressure; and activating the bypass device when the selected drilling parameter and one of the second flow rate and the differential pressure are present during the defined time period to divert a portion of the drilling fluid from the bypass device to the annuls. In one aspect, the selected drilling parameter is rotation of a member associated with the bypass device.
摘要:
A wired pipe segment includes a body extending from a box end to a pin end and a coupler located in one of the box end or the pin end, the coupler including a communication element and a coupler connector in electrical communication therewith and extending away from the communication element. The segment also includes a transmission line extending away from the coupler towards the other of the box and pin end, the transmission line including an inner conductor surrounded by an insulating material, the inner conductor of the transmission line having an end with a non-cylindrical shape. The segment also includes a connector that electrically connects the coupler to the transmission line.
摘要:
A wired pipe coupler that carries at least a data signal includes a carrier having a plurality of electrical components disposed therein and one or more antennas supported by and spaced from the carrier, the one or more antennas being electrically coupled to the carrier through respective ones of the plurality of electrical components.
摘要:
A method of forming a wellbore is provided that in one embodiment includes conveying an inner string and an outer string downhole; attaching the inner string to the outer string at a first location and forming the wellbore; and attaching the inner string to the outer string at a second location uphole of the first location and cementing an annulus between the outer string and the wellbore, without retrieving the inner string from the wellbore.
摘要:
A downhole tool including a body having a hydraulic fluid chamber, and a flexible multi-layer barrier impermeable to gas and water mounted at the body separating the hydraulic fluid chamber from fluids external to the body. The flexible multi-layer barrier including a first elastomeric layer, a second elastomeric layer, and a gas impermeable layer arranged between the first elastomeric layer and the second elastomeric layer, the gas impermeable layer being formed from a metal layer.
摘要:
Systems and methods to perform a downhole operations in a borehole comprising moving, using surface equipment, an inner structure and an outer structure within the borehole, the outer structure equipped with an interaction device and the inner structure configured to be moved relative to the outer structure in a direction parallel to the borehole by the surface equipment, transmitting, by a transmitter, a downlink instruction to the inner structure, and performing an interaction routine with the interaction device in response to the downlink instruction, wherein the interaction routine comprises an interaction at least partially outside of the outer structure to perform the downhole operation.