Abstract: Mobile downhole tools with fairings and methods of using the same. A mobile downhole tool is introduced into a wellbore. The mobile downhole tool has a housing with a thickness sufficient to support a pressure differential between an interior surface of the housing and an exterior surface of the housing when the mobile downhole tool is disposed in the wellbore, and a fairing coupled to the exterior surface of the housing. The fairing is structurally distinct from the housing and is not connected to the interior surface of the housing. The fairing curves in a first direction that is away from the housing. The mobile downhole tool is propelled in the wellbore as the wellbore is produced such that the mobile downhole tool descends downhole against the upstream flow of a wellbore fluid.

Abstract: Provided are tractor wheels for a downhole tractor. An example tractor wheel comprises a series of continuous springs disposed on the circumference of the tractor wheel, wherein the individual continuous springs in the series of continuous springs are separated by a gap, and a void disposed on the interior of the tractor wheel and that is continuous about the circumference of the tractor wheel.

Abstract: Provided are tractor wheels for a downhole tractor. An example tractor wheel comprises a series of continuous springs disposed on the circumference of the tractor wheel, wherein the individual continuous springs in the series of continuous springs are separated by a gap, and a void disposed on the interior of the tractor wheel and that is continuous about the circumference of the tractor wheel.

Abstract: Provided are tractor wheels for a downhole tractor. An example tractor wheel comprises a series of continuous springs disposed on the circumference of the tractor wheel, wherein the individual continuous springs in the series of continuous springs are separated by a gap, and a void disposed on the interior of the tractor wheel and that is continuous about the circumference of the tractor wheel.

Abstract: Multi-directional ultrasonic transducers useful for small downhole applications where two or more separate or larger transducers are too large. The transducer includes a backing material having two or more piezoelectric elements attached thereto. The piezoelectric elements are attached to the backing such that each elements transmit ultrasounds in different directions. An encapsulating material surrounds both the piezoelectric elements and the backing. Since the piezoelectric elements share the same backing and the same encapsulation, the form factor of the multi-directional transducer is greatly reduced in comparison to conventional transducer designs.

Abstract: Provided are tractor wheels for a downhole tractor. An example tractor wheel comprises a series of continuous springs disposed on the circumference of the tractor wheel, wherein the individual continuous springs in the series of continuous springs are separated by a gap, and a void disposed on the interior of the tractor wheel and that is continuous about the circumference of the tractor wheel.

Abstract: A downhole tool system includes a tool housing, a chassis located within the tool housing, and an electronics assembly positioned on the chassis within the tool housing. The electronics assembly includes a heat sink comprising an inner surface and an outer surface. The outer surface includes a tapered portion and in is contact with the tool housing. The electronics assembly further includes one or more electronic components mounted onto the heat sink, in which at least a portion of the electronic components is in contact with the inner surface of the heat sink.

Abstract: Multi-directional ultrasonic transducers useful for small downhole applications where two or more separate or larger transducers are too large. The transducer includes a backing material having two or more piezoelectric elements attached thereto. The piezoelectric elements are attached to the backing such that each elements transmit ultrasounds in different directions. An encapsulating material surrounds both the piezoelectric elements and the backing. Since the piezoelectric elements share the same backing and the same encapsulation, the form factor of the multi-directional transducer is greatly reduced in comparison to conventional transducer designs.

Abstract: A downhole tool system includes a tool housing, a chassis located within the tool housing, and an electronics assembly positioned on the chassis within the tool housing. The electronics assembly includes a heat sink comprising an inner surface and an outer surface. The outer surface includes a tapered portion and in is contact with the tool housing. The electronics assembly further includes one or more electronic components mounted onto the heat sink, in which at least a portion of the electronic components is in contact with the inner surface of the heat sink.