Methods and systems for evaluating a boundary between a consolidating spacer fluid and a cement composition
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Ronnie G. Morgan, Craig W. Roddy, James R. Benkley, D. Chad Brenneis
Life of this patent
Estimating the term…
Abstract
Disclosed are spacer fluids and methods of use in subterranean formations. Embodiments may include use of consolidating spacer fluids in displacement of drilling fluids from a well bore annulus. Embodiments may include determining the boundary between a cement composition and a consolidating spacer fluid based on presence of tagging material in the well bore.
Claims47
A method of evaluating a boundary between a consolidating spacer fluid and a cement composition comprising:
- introducing a consolidating spacer fluid into a well bore to displace at least a portion of a drilling fluid from the well bore;
- introducing a cement composition into the well bore behind the consolidating spacer fluid;
- allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore;
- and
- determining the boundary between the cement composition and the consolidating spacer fluid based on presence of a tagging material in the well bore, wherein the tagging material comprises a thermal neutron absorbing material.
A method of evaluating a boundary between a consolidating spacer fluid and a cement composition comprising:
- introducing a consolidating spacer fluid into a well bore to displace at least a portion of a drilling fluid from the well bore, wherein the consolidating spacer fluid comprises water and cement kiln dust;
- introducing a cement composition into the well bore behind the consolidating spacer fluid, wherein a first portion of the cement composition comprises a thermal neutron absorbing material;
- allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore;
- and
- determining the top of the cement composition in the well bore based on presence of the thermal neutron absorbing material in the first portion.
A system for evaluating spacer fluid boundaries in a well bore, comprising:
- a consolidating spacer fluid;
- a cement composition;
- mixing equipment for separately mixing the consolidating spacer fluid and the cement composition;
- and
- pumping equipment for separately delivering the consolidating spacer fluid and the cement composition to a well bore,
- wherein at least one of the consolidating spacer fluid or the cement composition comprises a tagging material comprising a thermal neutron absorbing material.
A method of evaluating a boundary between a consolidating spacer fluid and a cement composition comprising:
- introducing a consolidating spacer fluid into a well bore to displace at least a portion of a drilling fluid from the well bore;
- introducing a cement composition into the well bore behind the consolidating spacer fluid;
- allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore;
- determining the boundary between the cement composition and the consolidating spacer fluid based on presence of a tagging material in the well bore;
- and
- running a bond log on the consolidated portion of the consolidating spacer fluid in the well bore to measure bonding of the consolidating spacer fluid to a pipe string in the well bore.
A method of evaluating a boundary between a consolidating spacer fluid and a cement composition comprising:
- introducing a consolidating spacer fluid comprising a kiln dust into a well bore to displace at least a portion of a drilling fluid from the well bore;
- introducing a cement composition into the well bore behind the consolidating spacer fluid;
- allowing at least a portion of the consolidating spacer fluid to consolidate in the well bore;
- and
- determining the boundary between the cement composition and the consolidating spacer fluid based on presence of a tagging material in the well bore.
Dependencies are inferred from the claim text.