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US 6,406,789 B1Granted
Composite proppant, composite filtration media and methods for making and using same
AssigneeBorden Chemical, Inc.
InventorsRobert R. McDaniel, Johannes A. Geraedts
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Abstract
Composite particles made of a resin and filler material are provided for use in subterranean formations. The filler is finely divided mineral and optional fiber. The particles are proppants useful to prop open subterranean formation fractures. The particles are also useful for water filtration. Methods of making the composite particles are also disclosed.
Claims54
A composite particle comprising:
- a substantially homogeneous formed particle comprising:
- a first portion of a binder and filler particles dispersed throughout said first portion of binder, wherein said first portion is at least partly cured;
- particle size of said filler particles ranges from about 0.5 to about 60 μm, said composite particle having a sphericity of at least about 0.7;
- and
- an optional second portion of a binder coating the formed particle;
- the composite particle being 60-85 volume percent said filler particles.
3 more elements
Dependencies are inferred from the claim text.