Screening method for friction reducer precipitation
AssigneeHalliburton Energy Services, Inc.
InventorsLeiming Li, Scot Harris Bodnar, Liang Xu, James William Ogle, Todd Allen Collier
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Abstract
A method of preparing a fracturing fluid comprising: preparing or providing an aqueous fluid containing iron ions; screening a plurality of friction reducers against the aqueous fluid wherein the plurality of friction reducers are anionic, cationic, nonionic, amphoteric, or combinations thereof; selecting at least one friction reducer from the plurality of friction reducers based at least in part on the step of screening; and preparing a fracturing fluid including the at least one friction reducer.
Claims17
A method of preparing a fracturing fluid comprising:
- preparing a laboratory treatment fluid based at least in part on a treatment fluid model;
- screening a plurality of friction reducers against the laboratory treatment fluid, the screening comprising:
- dissolving at least 2,000 ppm of Fe2+ ions into water and adding about 2 gpt to about 5 gpt of a friction reducer;
- storing the water for at least about a day and monitoring formation of precipitates of hydrated friction reducing polymers;
- filtering the precipitates,
- drying the precipitates, and
- weighing the precipitates;
- selecting at least one friction reducer from the plurality of friction reducers based at least in part on the step of screening and the presence of precipitate;
- and
- preparing a fracturing fluid including the at least one friction reducer.
Dependencies are inferred from the claim text.