High-pressure injection proppant system

Details High-pressure injection proppant system High-pressure injection proppant system

E - Fixed Constructions

21

B

E21B 43/267 (2006.01)

Patent

CA 2508953

A high-pressure injection proppant system for stimulating coal bed methane production preloads proppant, such as sand, into one or more high- pressure vessels, for delivery into a fluid stream, such a N2 gas stream. A screw auger arrangement meters the proppant volumes and rates into the fluid stream. Two such vessels operationally mounted in parallel can function separately or concurrently depending on the demand for proppant in a particular formation. The system provides for the injection of surfactants into the fluid stream to enhance the performance of the proppant, to aid in the placement of the proppant into a fracture network, and to demote proppant flowback during production and embedment. The system can be operated manualy or by computer automation to aid in the accuracy of the mixing of the fluid stream components.

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