Abstract: Provided are robotic systems and methods for identifying a particular type of tree or plant (e.g., slash pine trees), for tapping them and collect their oleoresin for processing using an autonomous, long-range robotic forest rover. One aspect of the system comprises an autonomous vehicle equipped with an industrial robot, automated tool changer, a plurality of tools required for robotic operations, vision and navigation systems and powertrain for long-range operation. The rover identifies healthy, mature trees or plants, approaches them and performs the robotic operations required for tapping the trees or plants. In addition to these tasks, the Global Navigation Satellite System (GNSS) coordinates of the tree or plant is recorded along with its diameter, and a digital image of the tree or plant. This information is communicated to a base station for creating and updating a tree farm database.

Abstract: The present disclosure provides adjustable mandrel hanger assemblies and methods of their use. The adjustable mandrel hanger assembly includes an upper wellhead component, a lower wellhead component comprising a load shoulder, a mandrel hanger with a protrusion disposed on an exterior of the mandrel hanger, a seal assembly, and a height adjustment ring, wherein the height adjustment ring fits securely around a protrusion of the mandrel hanger and wherein a largest exterior diameter of the height adjustment ring is greater than an interior diameter of the load shoulder.

Abstract: The present disclosure provides adjustable mandrel hanger assemblies and methods of their use. The adjustable mandrel hanger assembly includes an upper wellhead component, a lower wellhead component comprising a load shoulder, a mandrel hanger with a protrusion disposed on an exterior of the mandrel hanger, a seal assembly, and a height adjustment ring, wherein the height adjustment ring fits securely around a protrusion of the mandrel hanger and wherein a largest exterior diameter of the height adjustment ring is greater than an interior diameter of the load shoulder.

Abstract: A plug pulling device includes an elongated housing comprising a production tree connection interface, a shifting tool disposed within and along a substantial length the housing and comprising a distal end configured to couple to a tubing plug, and a seal disposed within the housing and formed around a portion of the shifting tool. The seal isolates a first portion of the housing from a second portion of the housing. The second portion of the housing is adjacent to the production tree connection interface. The shifting tool is configured to move partially in and out of the first portion of the housing when there is a pressure differential between the first portion of the housing and an environment external to the first portion of the housing.