... substantially better proppant placement than polysaccharide-derivative gels. The gelling agent is based on a terpolymer of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, and acrylic acid that can be crosslinked with zirconium. The crosslink onset temperature can be varied over the range of 100 to 280°F...

... as the selective fracture stimulation strategy and challenges that have lead to the first successful tight gas discovery in the Sarah formation. sarah formation shlyapobersky drillstem/well testing closure pressure saudi arabia brine proppant permeability lower sarah formation gal completion...

... Abstract A successful case of proppant fracturing on an ultra-high pressure (Pressure gradient 0.018MPa/m), deep (5725-5783m) sandstone gas reservoir in Western China is described in this paper. Several technologies including high density(density1.12g/cm 3 ) frac-fluid, high density(density...

... challenges of performing fracture stimulations in HPHT environments. In high-temperature conditions, fracturing fluids especially need to be stable, induce minimum damage, and have good proppant transport capabilities. In HPHT tight-gas formations fracture stimulation (375°F and 1.1 psi/ft at 20,000 ft...

... characteristic of the reservoir, the tight shaly sand formation will not produce at its best potential without the high pressure proppant frac. The selection of the fluid suitable for this job was mainly to have to best properties and stable fluid to carry the proppant, not damaging to the formation...

... Abstract The generation of hydraulically produced fractures that are kept open by the use of proppants is a key technology that enables economic production from deep gas reservoirs. Much laboratory attention has been given to the study and prediction of the early productivity of wells completed...