Thermoset particles with enhanced crosslinking, production, and their use in oil and natural gas drilling applications

摘要

Use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of thermoset polymer particles is disclosed. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. Optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment; processes for the manufacture of said particles; and use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells are described.

主权项

1. A method for lightening a load of cement comprising:
mixing an uncured cement composition with an effective amount of a particle comprising a rigid thermoset polymer, wherein the thermoset polymer comprises a styrene-ethylvinylbenzene-divinylbenzene terpolymer; and placing the mixture in a selected location.