Abstract: Various embodiments include methods and systems structured to transmit data from downhole sensors to the surface at a well site. The transmission can be implemented to overcome downhole connections that can act as obstructions to direct electrical and optical communication in a wellbore. Electrical signals from one or more sensors in a sensor unit, located on a side of a downhole connection in a wellbore opposite the surface of the wellbore, can be used to drive an acoustic transmitter to transmit an acoustic signal via a production string or casing or fluid in the production string or casing across the downhole connection, where the acoustic signal is received on the surface side of the downhole connection. Data correlated to the received acoustic signal can be provided to a surface location of the wellbore. Additional apparatus, systems, and methods can be implemented in a variety of applications.

Abstract: Various embodiments disclosed relate to a composite mandrel. In various embodiments, the present invention provides a method of forming a composite mandrel for use in a subterranean formation. The method can include securing an elongated mold to at least a portion of an exterior surface of a rigid tubular to form a cavity between the mold and the exterior surface of the rigid tubular. The elongated mold can include a recessed portion. The cavity can extend longitudinally along the tubular. The method can include filling the cavity with a curable resin composition. The method can also include curing the resin to provide a cured resin including a utility recess corresponding to the recessed portion. Curing the curable resin composition can form the composite mandrel including the tubular and the cured resin.

Abstract: Various embodiments include methods and systems structured to transmit data from downhole sensors to the surface at a well site. The transmission can be implemented to overcome downhole connections that can act as obstructions to direct electrical and optical communication in a wellbore. Electrical signals from one or more sensors in a sensor unit, located on a side of a downhole connection in a wellbore opposite the surface of the wellbore, can be used to drive an acoustic transmitter to transmit an acoustic signal via a production string or casing or fluid in the production string or casing across the downhole connection, where the acoustic signal is received on the surface side of the downhole connection. Data correlated to the received acoustic signal can be provided to a surface location of the wellbore. Additional apparatus, systems, and methods can be implemented in a variety of applications.

Abstract: Example systems and methods are described for performing multilateral well sensing in a downhole environment. In an example system, a cased parent wellbore and a cased lateral wellbore intersect at a lateral junction. A sensor is deployed within the cased lateral wellbore that communicably couples to a transmitter module, wherein the transmitter module is deployed within the cased lateral wellbore downhole of the lateral junction and configured to generate acoustic signals. An optical fiber cable is deployed within the cased parent wellbore and configured to receive acoustic signals transmitted by the transmitter module in the cased lateral wellbore.

Abstract: Disclosed are pump-down sensor devices that operate in conjunction with a fiber-optic sensing system to take downhole measurements and communicate them to the surface while moving untethered through a borehole. A pump-down sensor device in accordance with various embodiments includes one or more flow baffles configured for a specified buoyancy, and an electronics module for measuring one or more downhole parameters and transmitting an acoustic signal encoding the measured parameter(s). The acoustic signal can be detected using the fiber-optic sensing system. Additional embodiments are disclosed.

Abstract: Example apparatus, methods, and systems are described for performing bottom hole measurements in a downhole environment. In an example system, a bridge plug is deployed at a downhole location of a cased well, An optical fiber cable is deployed exterior to the casing of the well. The bridge plug includes a sensor and an acoustic signal generator, which transmits acoustic signals through the casing to the optical fiber cable.

Abstract: A source of acoustic energy for a downhole environment can include a motor and a mechanical energy storage device. The mechanical energy storage device may be for storing a preset amount of torque generated by the motor. The source can also include a rigid body moveable between a retracted position and an extended position by the mechanical energy storage device. The rigid body may be for releasing the acoustic energy into the downhole environment in response to the mechanical energy storage device releasing the preset amount of torque generated by the motor and moving the rigid body to the extended position.

Abstract: A method may include coiling a fiber line around an exterior side of a casing section. A mold may be temporarily secured to at least a portion of the exterior side of the casing section. An epoxy material may be injected into the mold to form a cover. The cover may extend over the fiber line and the exterior of the casing section. The cover may have a substantially equal thickness for centralizing the casing section when the casing section is positioned downhole. The mold may be removed from the exterior side of the casing section after the epoxy material has cured.

Abstract: Various embodiments disclosed relate to a composite mandrel. In various embodiments, the present invention provides a method of forming a composite mandrel for use in a subterranean formation. The method can include securing an elongated mold to at least a portion of an exterior surface of a rigid tubular to form a cavity between the mold and the exterior surface of the rigid tubular. The elongated mold can include a recessed portion. The cavity can extend longitudinally along the tubular. The method can include filling the cavity with a curable resin composition. The method can also include curing the resin to provide a cured resin including a utility recess corresponding to the recessed portion. Curing the curable resin composition can form the composite mandrel including the tubular and the cured resin.

Abstract: A downhole sensor deployment assembly includes a body attachable to a completion string and one or more arms pivotably coupled to the body. A sensor pad is coupled to each arm and movable from a retracted position, where the sensor pad is stowed adjacent the completion string, and an actuated position, where the sensor pad is extended radially away from the completion string. One or more actuators are pivotably coupled to the body at a first end and pivotably coupled to a corresponding one of the one or more arms at a second end, the one or more actuators being operable to move the sensor pad to the actuated position. One or more sensor devices are coupled to the sensor pad for determining a resistivity of a formation, the one or more sensor devices comprising at least one of a sensing electrode, a transceiver, and a transmitter.

Abstract: An assembly can include a barrel housing having an opened end. The barrel housing can also include a barrel port for mounting a first compression fitting. A racetrack tray can be positioned within the barrel housing. The racetrack tray can receive an optical fiber and an electrical cable of a hybrid cable. A cap can be secured to the opened end of the barrel housing. The cap can include a cap port for receiving a second compression fitting. A primary seal can be positioned in a groove on one of the cap or the barrel housing. The primary seal can create a pressure seal between the cap and the barrel housing.

Abstract: An example device in accordance with an aspect of the present disclosure includes a splice housing body comprising a raceway within which optical fibers and electrical cables can be positioned, at least one port through the splice housing body to which a pressure fitting for optical fiber or electrical cable can be mounted, a base to which the splice housing body may be removably attached, and a port in one of the splice housing body or base for inserting fluid in the splice housing body.

Abstract: An assembly for use in a well, where the assembly includes a casing section, a modular carrier body, at least one securing ring, and at least one at least one port through the modular carrier body for connecting a compression fitting for at least one fiber optic line. The modular carrier body has a shape that can conform to the outer diameter of the casing section, and has a carrier body interior to house at least one fiber optic line, and a fiber optic line splicing assembly. At least one securing ring has a shape conformable to both the outer diameter of the casing section and a portion of a surface of the modular carrier body. The assembly can have two securing rings on either end of the modular carrier body as it is mounted to the casing.

Abstract: An example device in accordance with an aspect of the present disclosure includes a splice housing body comprising a raceway within which optical fibers can be positioned, at least one port through the splice housing body to which a pressure fitting for optical fiber can be mounted, a base to which the splice housing body may be removably attached, and a port in one of the splice housing body or base for inserting fluid in the splice housing body.

Abstract: A coiled tubing servicing system comprising a servicing cart comprising two or more support frames, a length of coiled tubing supported by the servicing cart, a servicing fixture disposed about a portion of the length of coiled tubing adjacent the servicing cart, wherein the servicing fixture is movable along a longitudinal axis of the length of coiled tubing and radially about the longitudinal axis of the length of coiled tubing; and a servicing tool coupled to the servicing fixture.

Abstract: A coiled tubing servicing system comprising a servicing cart comprising two or more support frames, a length of coiled tubing supported by the servicing cart, a servicing fixture disposed about a portion of the length of coiled tubing adjacent the servicing cart, wherein the servicing fixture is movable along a longitudinal axis of the length of coiled tubing and radially about the longitudinal axis of the length of coiled tubing; and a servicing tool coupled to the servicing fixture.

Abstract: A coiled tubing servicing system comprising a servicing cart comprising two or more support frames, a length of coiled tubing supported by the servicing cart, a servicing fixture disposed about a portion of the length of coiled tubing adjacent the servicing cart, wherein the servicing fixture is movable along a longitudinal axis of the length of coiled tubing and radially about the longitudinal axis of the length of coiled tubing; and a servicing tool coupled to the servicing fixture.

Abstract: A coiled tubing servicing system comprising a servicing cart comprising two or more support frames, a length of coiled tubing supported by the servicing cart, a servicing fixture disposed about a portion of the length of coiled tubing adjacent the servicing cart, wherein the servicing fixture is movable along a longitudinal axis of the length of coiled tubing and radially about the longitudinal axis of the length of coiled tubing; and a servicing tool coupled to the servicing fixture.