Test Formation Apparatus for a Downhole Tool
AssigneeSchlumberger Technology Corporation
InventorsChristian Stoller, Richard J. Radtke, Raju M. Eason, Scott H. Fricke
Life of this patent
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Abstract
An insert apparatus for use in a test formation for a downhole nuclear spectroscopy tool includes an outer liner, and an inner liner defining a cylindrical borehole having a diameter such that the downhole nuclear spectroscopy tool is receivable therein. There is fill material between the outer liner and the inner liner, the material including a formation base material and an elemental standards material. The outer liner, the inner liner, and the fill material are configured such that an elemental standard measurement derived from a test using the insert apparatus is equivalent to an elemental standard measurement from a selected formation.
Claims28
An insert apparatus for use in a test formation for a downhole tool comprising:
- an outer liner;
- an inner liner defining a cylindrical borehole having a diameter such that the downhole tool is receivable therein;
- fill material between the outer liner and the inner liner, the material comprising a formation base material and an elemental standards material,
- wherein the outer liner, the inner liner, and the fill material are configured such that a gamma ray elemental standard measurement derived from a test using the insert apparatus is equivalent to an elemental standard measurement from a selected formation with the same composition.
A test formation for a downhole nuclear spectroscopy tool comprising:
- a fluid tank;
- a support within the fluid tank;
- and
- an insert apparatus positioned within the fluid tank and carried by the support, the insert apparatus comprising
- an outer liner,
- an inner liner defining a cylindrical borehole having a diameter such that the downhole nuclear spectroscopy tool is receivable therein, and
- fill material between the outer liner and the inner liner, the fill material comprising at least at least one formation base material and at least one elemental standards material,
- wherein the outer liner, the inner liner, and the fill material are configured such that a gamma ray elemental standard measurement derived from a test using the insert apparatus is equivalent to an elemental standard measurement from a selected formation with the same composition.
A method of testing a downhole tool comprising:
- positioning the downhole nuclear spectroscopy tool in an insert apparatus, the insert apparatus comprising an outer liner, an inner liner defining a cylindrical borehole having a diameter such that the downhole nuclear spectroscopy tool is receivable therein, fill material between the outer liner and the inner liner, the fill material comprising a formation base material and an elemental standards material,
- positioning the insert apparatus into a fluid reservoir filled with a fluid;
- and
- performing test measurements on the insert apparatus using the downhole nuclear spectroscopy tool, wherein the test measurements are such that a gamma ray elemental standard measurement derived from a test using the insert apparatus is equivalent to an elemental standard measurement from a selected formation with the same composition due to a configuration of the outer liner, the inner liner, and the fill material.
Dependencies are inferred from the claim text.