公开(公告)号：US11649389B2

公开(公告)日：2023-05-16

申请号：US17221155

申请日：2021-04-02

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Peter A. Gordon ,  Thomas A. Petersen ,  Spencer A. White ,  Elizabeth L. Templeton-Barrett ,  Christian Mayer

IPC: C09K8/516 ,  E21B33/04 ,  E21B33/14 ,  E21B43/00 ,  C09K8/03

CPC classification number: C09K8/032 ,  C09K8/516 ,  E21B33/04 ,  E21B33/14 ,  E21B43/00

Abstract: A collection of compressible particles. The compressible particles are intended to be used for attenuating pressure build-up within a confined volume such as a trapped annulus in a wellbore. Each of the compressible particles is fabricated to collapse in response to fluid pressure within the confined volume, and comprises carbon. Particularly, each of the particles comprises a plurality of peripheral openings, permitting an ingress of wellbore fluids in response to an increase in pressure within a trapped annulus. The collection of compressible particles together has a reversible volumetric expansion/contraction of ≥10% and up to 25% at pressures up to 10,000 psi. A method of attenuating annular pressure buildup within a wellbore using the collection of compressible particles is also provided.