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US 5,325,723 AGranted
Core sample test method and apparatus
AssigneeHalliburton Company
InventorsDavid L. Meadows, Stewart E. Rowell
Life of this patent
Estimating the term…
Abstract
A core sample from an oil or gas well can be quickly and easily inserted and removed relative to a reusable sealing sleeve fixed within a test housing wherein the core sample is tested for both longitudinal and lateral strain in response to applied stress. Young's modulus and Poisson's ratio can be determined from the strain and stress information. Pressures and temperature can be set to simulate downhole conditions inside the apparatus.
Claims6
An apparatus for detecting changes in longitudinal and lateral dimensions of a core sample extracted from an oil or gas well, comprising:
- a housing;
- a sealing sleeve fixed inside said housing and adapted to receive a core sample without said sealing sleeve being removed from said housing;
- retaining means for releasably retaining the core sample within said sealing sleeve and for transferring a longitudinal force to the core sample;
- longitudinal deflection sensing means for sensing a change in longitudinal dimension of the core sample in response to an applied longitudinal force;
- lateral deflection sensing means for sensing a change in lateral dimension of the core sample in response to the applied longitudinal force;
- and wherein:
- said housing includes:
- a support body having a contoured inner surface providing a support shoulder for fixedly supporting said sealing sleeve inside said body;
- a first washer disposed adjacent and end of said sealing sleeve;
- a first annular holding member connected to said body adjacent said first washer;
- a second washer disposed adjacent another end of said sealing sleeve;
- and
- a second annular holding member connected to said body adjacent said second washer;
- and
- said retaining means includes:
- a first end cap slidably received in said first annular holding member;
- and
- a second end cap slidably received in said second annular holding member.
15 more elements
Dependencies are inferred from the claim text.