Xanthan gels in brines and methods of using such xanthan gels in subterranean formations
AssigneeHalliburton Energy Services, Inc.
InventorsMax L. Phillippi, Richard W. Pauls
Life of this patent
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Abstract
Xanthan gels hydratable in brine, methods of making these xanthan gels, and methods of using these compositions in subterranean formation applications, such as gravel packing, are provided herein.
Claims211
A method of mixing xanthan polymer in a brine comprising the steps of:
- providing a brine comprising water, a salt and a pH suppressant;
- heating the brine;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture to form a xanthan gel.
A method of mixing xanthan polymer in a brine comprising the steps of:
- providing a brine comprising water, a salt and a pH suppressant;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture;
- and
- imparting heat to the mixture while mixing to form a xanthan gel.
A method of hydrating xanthan polymer in a brine solution comprising the steps of:
- providing a brine comprising water, a salt and a pH suppressant;
- heating the brine;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture to form a xanthan gel.
A method of hydrating xanthan polymer in a brine solution comprising the steps of:
- providing a brine comprising water, a salt and a pH suppressant;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture;
- and
- imparting heat to the mixture while mixing to form a xanthan gel.
A method of gravel packing a subterranean formation comprising the steps of:
- providing a gravel pack fluid comprising gravel, a breaker, and a xanthan gel, the gel made from a process comprising the steps of
- providing a brine comprising water, a salt and a pH suppressant;
- heating the brine;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture to form a xanthan gel;
- and
- placing the gravel pack fluid in a subterranean formation.
A method of gravel packing a subterranean formation comprising the steps of:
- providing a gravel pack fluid comprising gravel, a breaker, and a xanthan gel, the gel made from a process comprising the steps of
- providing a brine comprising water, a salt and a pH suppressant;
- adding xanthan polymer to the brine to form a mixture;
- elevating the pH of the mixture;
- and
- mixing the mixture;
- and
- imparting heat to the mixture while mixing to form a xanthan gel;
- and
- placing the gravel pack fluid in a subterranean formation.
Dependencies are inferred from the claim text.