High strength connection for sleeve and mandrel and related methods

摘要

Device, system, and method to adhesively bond a sleeve to a mandrel are disclosed. The sleeve and the mandrel may be used as part of frac plug or a bridge plug in oil and gas applications. The bonded adhesive connection with grooves is strengthened to reliably achieve higher levels of lap shear strengths than attainable by conventional means.

主权项

1. A method for increasing adhesive bond strength of a composite sleeve to a mandrel comprising a longitudinal axis, said method comprising:
machining a plurality of grooves on an exterior surface of the mandrel along the longitudinal axis of the mandrel to form a plurality of axial grooves; applying adhesive to the plurality of axial grooves; and placing the sleeve over the mandrel.