Abstract: A connector for coiled tubing may include a main body configured for welding to a free end of the coiled tubing and having an internal stem extending distally therefrom. The stem may include a sleeve portion and the connector may include an alignment sleeve arranged on the sleeve portion of the stem and being free to rotate relative to the stem. The alignment sleeve may have a longitudinally extending groove on an outside surface thereof for receiving a longitudinal weld bead on an inside surface of the coiled tubing.

Abstract: A coiled tubing (CT) connector assembly includes a first sub extending between an uphole end and a downhole end, a second sub extending between an uphole end and a downhole end, a slip connected between the first sub and the second sub and comprising one or more engagement members formed on an inner surface thereof for biting into an outer surface of a CT string, a first annular seal and a second annular seal each positioned along an inner surface of at least one of the first sub and the second sub, and a radial port formed in at least one of the first sub and the second sub and located longitudinally between the first annular seal and the second annular seal for pressurizing an internal region of the CT connector assembly extending longitudinally between the first annular seal and the second annular seal.

Abstract: A coiled tubing (CT) aligner for aligning a first CT string and a second CT string of a well system includes a first clamp having a central passage and positionable about the second CT string to apply a clamping force to the second CT string for locking the first clamp to the second CT string, a centralizer comprising a central passage in which the first CT string is slidably receivable, a rigid support arm connected between the first clamp and the centralizer, and a second clamp having a central passage and positionable about the first CT string to apply a clamping force to the first CT string for locking the first clamp to the first CT string.

Abstract: An annular grappling element of a grappling tool for retrieving a downhole tool includes a body extending between a first end and a second end longitudinally opposite the first end, the body defining an inner surface extending between the first end and the second end and an outer surface also extending between the first end and the second end, herein one or more engagement members for grappling the downhole tool are formed on one of the inner surface and the outer surface of the body, and wherein the body is formed from a base material having a nickel content that is equal to or greater than 0.60 percent by weight (Wt %) and a carbon content that is equal to or less than 0.20 Wt %.

Abstract: At least one of pressure pulses, lateral oscillations, and axial oscillations can be generated by a distal downhole tool and a proximal downhole tool while cement is pumped into a well for cementing the well. Also, the generation of at least one of pressure pulses, lateral oscillations, and axial oscillations by the proximal downhole tool can continue even when the cement is no longer pumped around a tubing and is curing. In order to do so, a backflow path from a point downstream of the second vibration tool toward a wellhead is provided. Then a fluid, usually other than cement, is pumped from the wellhead, through the proximal downhole tool, and back into an annulus toward the wellhead. As such, a production tubing may remain centralized while the cement is curing.

Abstract: A connector for coiled tubing may include a main body configured for welding to a free end of the coiled tubing and having an internal stem extending distally therefrom. The stem may include a sleeve portion and the connector may include an alignment sleeve arranged on the sleeve portion of the stem and being free to rotate relative to the stem. The alignment sleeve may have a longitudinally extending groove on an outside surface thereof for receiving a longitudinal weld bead on an inside surface of the coiled tubing.

Abstract: At least one of pressure pulses, lateral oscillations, and axial oscillations can be generated by a distal downhole tool and a proximal downhole tool while cement is pumped into a well for cementing the well. Also, the generation of at least one of pressure pulses, lateral oscillations, and axial oscillations by the proximal downhole tool can continue even when the cement is no longer pumped around a tubing and is curing. In order to do so, a backflow path from a point downstream of the second vibration tool toward a wellhead is provided. Then a fluid, usually other than cement, is pumped from the wellhead, through the proximal downhole tool, and back into an annulus toward the wellhead. As such, a production tubing may remain centralized while the cement is curing.

Abstract: A method includes cutting a production tubing disposed in a wellbore to form a lower production tubing section and an upper production tubing section, displacing the upper production tubing section away from the lower production tubing section, installing a production tubing conversion device within the upper production tubing section, and injecting a sealant into the wellbore through the upper production tubing section, through the production tubing conversion device, and through the bottom hole assembly. The production tubing conversion device is coupled to a bottom hole assembly disposed below the production tubing conversion device.

Abstract: A method includes cutting a production tubing disposed in a wellbore to form a lower production tubing section and an upper production tubing section, displacing the upper production tubing section away from the lower production tubing section, installing a production tubing conversion device within the upper production tubing section, and injecting a sealant into the wellbore through the upper production tubing section, through the production tubing conversion device, and through the bottom hole assembly. The production tubing conversion device is coupled to a bottom hole assembly disposed below the production tubing conversion device.

Abstract: A ball is used for engaging in a downhole seat and can be milled out after use. The ball has a spherical body with an outer surface. An interior of the spherical body is composed of a metallic material, such as aluminum. The spherical body has a plurality of holes formed therein. The holes extend from at least one common vertex point on the outer surface of the spherical body and extend at angles partially into the interior of the spherical body.