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US 2015/0027217 A1Published application
Confining pressure measurement for zonal isolation evaluation
AssigneeSchlumberger Technology Corporation
InventorsROMAN KATS, AGATHE ROBISSON, SIMONE MUSSO, YUCUN LOU, JEFFREY THOMAS
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Abstract
Apparatus and methods for measuring confining pressure, axial strain and radial strain of zonal isolation materials are described. This information is useful for evaluating these materials and predicting seal performance and potential failures of these materials.
Claims26
An apparatus for measuring a swelling pressure and swelling kinetics of a sample, the apparatus comprising:
- an external container;
- an internal container disposed inside the external container;
- a base member coupling the external and internal container, the base member comprising a beating element;
- a sample inside the internal container wherein the sample swells on contact with a swelling agent;
- a piston operative to slide axially inside the internal container;
- and
- a mechanical testing device connected to the piston to determine at least one of a force and a displacement exerted by the sample on the piston as the sample swells, wherein the internal container confines the sample in a radial direction and the piston position controls a sample length.
4 more elements
A method for evaluating a sample of material used for zonal isolation, the method comprising:
- disposing an internal container inside an external container;
- placing a sample of material inside the internal, container, wherein the material swells on contact with a swelling agent;
- coupling the external and internal container with a base member comprising a heating module;
- placing a piston above the sample of material, the piston operative to slide axially inside the internal container;
- and
- using a mechanical testing device in contact with the piston and determining at least one of force and displacement exerted by the sample of material on the piston as the sample of material swells.
3 more elements
Dependencies are inferred from the claim text.