Abstract: A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture.

Abstract: A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture.

Abstract: Methods are presented for a continuous, two-step, phase sequenced deposition of hydroxyapatite film over the surface of the substrate.

Abstract: A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture.

Abstract: Methods are presented for a continuous, two-step, phase sequenced deposition of hydroxyapatite film over the surface of the substrate.

Abstract: A ceramic powder of non-agglomerated non-aggregated phase-pure hydroxyapatite having a controllable morphology. Also presented is a film of phasepure crystalline hydroxyapatite grains having a controllable morphology. Methods for preparing the same are also provided.

Abstract: A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture.

Abstract: A proppant material is provided that is in the form of generally rigid, elastic plate-like particles having a maximum to minimum dimension ratio of more than about 5. The proppant may be formed from a corrosion resistant material or having a corrosion resistant material formed thereon. The plate-like particles may be substantially non-deformable and may be formed from stainless steel or carbon steel provided with a corrosion resistant coating. The particles may have a thickness of from about 100 to about 300 ?m and may be in the form of a grating. A method of hydraulic fracturing in a formation penetrated by a wellbore is also provided wherein proppant material in the form of generally rigid, elastic plate-like particles having a maximum to minimum dimension ratio of more than about 5 are introduced into the wellbore. The particles may be formed from a corrosion resistant material or having a corrosion resistant material formed thereon.

Abstract: A ceramic powder of non-agglomerated non-aggregated phase-pure hydroxyapatite having a controllable morphology. Also presented is a film of phasepure crystalline hydroxyapatite grains having a controllable morphology. Methods for preparing the same are also provided.

Abstract: A proppant material is provided that is in the form of generally rigid, elastic plate-like particles having a maximum to minimum dimension ratio of more than about 5. The proppant may be formed from a corrosion resistant material or having a corrosion resistant material formed thereon. The plate-like particles may be substantially non-deformable and may be formed from stainless steel or carbon steel provided with a corrosion resistant coating. The particles may have a thickness of from about 100 to about 300 ?m and may be in the form of a grating. A method of hydraulic fracturing in a formation penetrated by a wellbore is also provided wherein proppant material in the form of generally rigid, elastic plate-like particles having a maximum to minimum dimension ratio of more than about 5 are introduced into the wellbore. The particles may be formed from a corrosion resistant material or having a corrosion resistant material formed thereon.