Crosslinked proppant-gel matrix
AssigneeHexion Inc.
InventorsCharles Zha, Jan Beetge
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Abstract
A method of making a proppant-gel matrix comprising: a) hydrating a gelling agent to form a hydrated gelling agent; b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0; c) mixing the basic hydrated gelling agent and a proppant to form a basic hydrated gelling system; and d) adding a crosslinking agent to the basic hydrated gelling system to form the proppant-gel matrix, is disclosed. The proppant-gel matrix can then be used as a fracturing fluid in a hydraulic fracturing process.
Claims18
A method of making a proppant-gel matrix comprising:
- a) hydrating a gelling agent to form a hydrated gelling agent;
- b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0;
- c) mixing the basic hydrated gelling agent and a proppant to form a basic hydrated gelling system;
- and
- d) adding a crosslinking agent to the basic hydrated gelling system to crosslink the proppant with the gelling agent to form a proppant-gel matrix.
A method of making a proppant-gel matrix comprising:
- a) hydrating a gelling agent to form a hydrated gelling agent;
- b) adding a basic compound to the hydrated gelling agent to form a basic hydrated gelling agent having a pH in the range of 11.5 to 14.0, the basic compound comprising a compound which produces hydroxide ions in water solutions;
- c) mixing the basic hydrated gelling agent and a sand proppant to form a basic hydrated gelling system;
- and
- d) adding a crosslinking agent to the basic hydrated gelling system to crosslink the sand proppant with the gelling agent to form a sand proppant-gel matrix, wherein the gelling agent is selected from the group consisting of guar gum, modified guar gum, and combinations thereof, the crosslinking agent comprising a boron compound.
Dependencies are inferred from the claim text.