Abstract: An energy harvester, including a cyclical impulse device, and a piezoelectric generator deformably connected to the device. A method for harvesting energy from a flowing fluid including inducing a selected flow regime, causing a cyclical impulse device to cycle based upon the flow regime, and physically deforming a piezoelectric generator with the device. A wellbore system, including a borehole in a subsurface formation, a string in the borehole, and an energy harvester disposed within or as a part of the string.

Abstract: A cable core including a body, a recess in the body, and a protrusion extending radially outwardly from the body and along the recess. A cladding disposed radially outwardly of the core is used to create a cable.

Abstract: A cable core including a body, a recess in the body, and a protrusion extending radially outwardly from the body and along the recess. A cable including a cable core having a body, a recess in the body, and a protrusion extending radially outwardly from the body and along the recess, a cladding disposed radially outwardly of the cable core and having an inside diameter in loaded contact with the protrusion, and a conductor disposed in the recess.

Abstract: A method for deploying a fiber optic line from a surface to a desired location in a wellbore includes the steps of identifying a heater cable deployed in the wellbore, where the heater cable includes one or more conductors and a first capillary tube. The method continues with the step of loading a terminal end of the fiber optic line into the first capillary tube from the surface. Next, the method includes the step of pumping a working fluid into the first capillary tube from the surface to inject the fiber optic line through a portion of the first capillary tube. The method concludes with the step of stopping the injection of the fiber optic line when the terminal end of the fiber optic line reaches the desired location in the wellbore.

Abstract: A method for deploying a fiber optic line from a surface to a desired location in a wellbore includes the steps of identifying a heater cable deployed in the wellbore, where the heater cable includes one or more conductors and a first capillary tube. The method continues with the step of loading a terminal end of the fiber optic line into the first capillary tube from the surface. Next, the method includes the step of pumping a working fluid into the first capillary tube from the surface to inject the fiber optic line through a portion of the first capillary tube. The method concludes with the step of stopping the injection of the fiber optic line when the terminal end of the fiber optic line reaches the desired location in the wellbore.

Abstract: A hydrocarbon recovery tubular system including one or more axially elongated tubulars arranged to receive a hydrocarbon bearing fluid therein. One or more helically curved conduits are positioned radially adjacent a surface of the one or more tubulars. One or more fibers are disposed in the one or more helically curved conduits and are immovably positioned at a shortest pathway through the one or more helically curved conduits.

Abstract: A system for inserting control lines to a control line receptacle at an alternate path structure includes an upper guide having a path structure engagement roller, a control line insertion wheel and a control line bypass space and further includes a lower guide separate from the upper guide and having a path structure engagement roller and a control line insertion wheel, the path structure engagement roller and control line insertion wheel being resiliently biased to a position calculated to cause control line insertion to the alternate flow path structure when in an engaged position.

Abstract: A vibratory tool for downhole use is capable of letting a wireline or other tools pass a passage therethrough that can be subsequently closed by landing a plug on a seat. The dump valve is disposed annularly about the central passage so that cycling the tool does not cause it to be slammed against a seat. Since only a plug is delivered to a passage the functioning parts already in the housing are made stronger to improve reliability. Additional power is delivered per stroke from modular stacked piston units. The tool can be run in a manner where the high amplitude low frequency oscillating forces are delivered to the stuck fish without impacts of the pistons on the housing.

Abstract: Devices and methods for releasably securing components of a device having a sliding sleeve arrangement to prevent premature actuation due to vibration. In a currently preferred embodiment, the invention utilizes standard elastomeric O-rings as shear members. The O-ring shear members reside within spaces formed between two slidable sleeve members. The O-rings are sheared cross-sectionally to allow the sleeve members to move axially with respect to one another. An exemplary coiled tubing shear release joint is described that incorporates a shear disconnect assembly which uses elastomeric O-rings as shear members. Multiple O-ring seals can be used as shear members to increase the shear value of the device. The use of O-rings as shear members helps prevent premature sliding of sleeve components in response to high vibration. Because the O-rings are resilient, they absorb vibration and do not shear during vibration, the connection between the two sleeve components will not be released prematurely.

Abstract: An apparatus for applying a force to a stuck object in a wellbore comprises a work string extending in the wellbore. A vibrating string has a vibrator engaged with the stuck object. The vibrator drives the vibrating string to impart the force to the stuck object. An isolator associated with the work string and the vibrating string decouples a portion of a motion of the vibrating string from the work string. A method of applying a force to a stuck object in a wellbore comprises extending a work string in the wellbore from a surface location. A vibrating string is engaged with the stuck object. The vibrating string is driven at a frequency to apply the force to the stuck object. The work string is isolated from the vibrating string such that a portion of the motion of the vibrating string is decoupled from the work string.

Abstract: A method of imposing a simple harmonic wave of bidirectional vibration on an object stuck in sand in a well bore, where vibrations are imposed in close proximity to the stuck location, and where the harmonic wave has sufficient amplitude and frequency to create soil liquefaction at the surface of the stuck object, thereby reducing the amount of overpull necessary to free the object from the sand.