ENCAPSULATED PROPPANTS

摘要

A capsule for carrying a proppant for emplaced in a formation containing formation fluid by a hydraulic fracture operation using a fracturing fluid. The capsule includes a capsule body. The capsule body includes a proppant. There is a surface layer on the capsule body that is permeable to the formation fluid or the fracturing fluid or is permeable to both the formation fluid and the fracturing fluid. The proppant material is dry cement that interacts with the formation fluid or the fracturing fluid or both the formation fluid and the fracturing fluid that migrate through the surface layer and is taken up by the dry cement causing the dry cement to harden.

主权项

1. An apparatus that is introduced into a formation containing formation fluid during a hydraulic fracturing operation wherein the hydraulic fracturing operation has a fracturing fluid, comprising:
a capsule; said capsule having a capsule body, said capsule body including a proppant; and a surface layer on said capsule body wherein said surface layer is a permeable surface layer that is permeable to the formation fluid or the fracturing fluid or is permeable to both the formation fluid and the fracturing fluid, and wherein said proppant is encapsulated within said permeable surface layer in said capsule body and wherein said proppant material is diphenylmethane diisocyanate or wherein said proppant material is dry cement or wherein said proppant material is an expandable material or wherein said proppant material is cement.