Crosslinked proppant-gel matrix
AssigneeHexion Inc.
InventorsCharles Zha, Jan Beetge
Life of this patent
Estimating the term…
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.
Claims19
A proppant-gel matrix composition comprising:
- a hydrated gelling agent having a pH in the range of 12.0 to 14.0, the hydrated gelling agent comprising guar gum or a derivative thereof;
- a proppant comprising sand;
- and
- a borate crosslinking agent,
- wherein the proppant is crosslinked with the hydrated gelling agent through the crosslinking agent, and wherein the proppant-gel matrix composition has a settling rate of less than 50% at 24 hours.
A proppant-gel matrix composition, comprising:
- a hydrated gelling agent having a pH in the range of 12.1 to 14.0, the hydrated gelling agent comprises guar;
- a proppant comprising sand;
- and
- a borate crosslinking agent,
- wherein the proppant is crosslinked with the hydrated gelling agent through the crosslinking agent, and wherein the proppant-gel matrix composition has a settling rate of less than 40% at 48 hours.
Dependencies are inferred from the claim text.