A gravel pack system includes slurry transport hardware including a first slurry transport pathway, a coupling configured to couple the first slurry transport pathway to a radially interiorly arranged screen assembly, and a first exit port in the coupler. The first exit port is fluidically connected to the first slurry transport pathway, and the first exit port is arranged to re-direct at least a portion of slurry passing longitudinally through the first slurry transport pathway in a radially outward direction.

A device, system and method are provided for using a seal sub to isolate a well. The seal sub generally has a primary channel extending through the seal sub and seat positioned within the primary channel. As a ball setting tool passes through the seal sub and the seat, a ball connected to the setting tool with a shear pin contacts the seat and selectively connects to the seal sub. A predetermined force can be applied to the ball setting tool to break the shear pin, which leaves the seal ball in place, and the seal sub and the seal ball isolate the downhole pressures and contents from the uphole pressures and contents.

A device, system and method are provided for using a seal sub to isolate a well. The seal sub generally has a primary channel extending through the seal sub and seat positioned within the primary channel. As a ball setting tool passes through the seal sub and the seat, a ball connected to the setting tool with a shear pin contacts the seat and selectively connects to the seal sub. A predetermined force can be applied to the ball setting tool to break the shear pin, which leaves the seal ball in place, and the seal sub and the seal ball isolate the downhole pressures and contents from the uphole pressures and contents.

An oilwell treatment composition comprising (i) a solubilizing agent wherein the solubilizing agent comprises a saturated compound of the formula:

H—(OC.sub.aH.sub.2a).sub.x(OC.sub.bH.sub.2b).sub.y—OC.sub.cH.sub.2c+1

where a and b are each independently 1, 3, or 4; c is 1, 2 or 3; x and y each independently, are numbers ranging from 1 to 5; (ii) a solid acid precursor and (iii) an aqueous fluid wherein the mass ratio of the solubilizing agent to the aqueous solution is within the range of about 1:3 to about 1:5 and the mass ratio of the solubilizing agent to the solid acid precursor is within the range of about 3:1 to about 2:1.

An oilwell treatment composition comprising (i) a solubilizing agent wherein the solubilizing agent comprises a saturated compound of the formula:

H—(OC.sub.aH.sub.2a).sub.x(OC.sub.bH.sub.2b).sub.y—OC.sub.cH.sub.2c+1

where a and b are each independently 1, 3, or 4; c is 1, 2 or 3; x and y each independently, are numbers ranging from 1 to 5; (ii) a solid acid precursor and (iii) an aqueous fluid wherein the mass ratio of the solubilizing agent to the aqueous solution is within the range of about 1:3 to about 1:5 and the mass ratio of the solubilizing agent to the solid acid precursor is within the range of about 3:1 to about 2:1.

A method of breaking the viscosity of a treatment fluid comprises: adding hydrophobic nanoparticles to a treatment fluid comprising a base fluid and a viscoelastic surfactant gelling agent, the hydrophobic nanoparticles comprising metallic nanoparticles that are surface modified with C.sub.6-30 aliphatic groups, wherein the hydrophobic nanoparticles are added in an amount effective to decrease the viscosity of the treatment fluid as compared to a treatment fluid absent the hydrophobic nanoparticles.

A method of breaking the viscosity of a treatment fluid comprises: adding hydrophobic nanoparticles to a treatment fluid comprising a base fluid and a viscoelastic surfactant gelling agent, the hydrophobic nanoparticles comprising metallic nanoparticles that are surface modified with C.sub.6-30 aliphatic groups, wherein the hydrophobic nanoparticles are added in an amount effective to decrease the viscosity of the treatment fluid as compared to a treatment fluid absent the hydrophobic nanoparticles.

A method of fracturing a subterranean formation comprises introducing into the formation at a pressure sufficient to create or enlarge a fracture in the formation a fracturing composition comprising a carrier and a substantially spherical polymeric particulate derived from a cashew nut shell liquid, the substantially spherical polymeric particulate having an apparent specific gravity of less than about 2.4.

A method of fracturing a subterranean formation comprises introducing into the formation at a pressure sufficient to create or enlarge a fracture in the formation a fracturing composition comprising a carrier and a substantially spherical polymeric particulate derived from a cashew nut shell liquid, the substantially spherical polymeric particulate having an apparent specific gravity of less than about 2.4.

A method of fracturing a subterranean formation comprises introducing into the formation at a pressure sufficient to create or enlarge a fracture in the formation a fracturing composition comprising a carrier and a polymeric particulate derived from a cashew nut shell liquid, the polymeric particulate having an apparent specific gravity of less than about 2.4.