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Drilling fluid additives
AU-33 Wetting Reversal Agent
Oil and gas wells operating in the process, as a result of fluid added in the near
wellbore formation into a strong and easy to oily wet, thereby reducing the
permeability of oil phase to increase the permeability of water phase, the water
saturation increases, tests show If the water saturation from 20% to 35%, the
oil relative permeability from 90% to 30%, to ground into a strong low interfacial
tension of the hydrophilic surfactant, wetting by the oil stratum can change for
water wetting, thereby increasing penetration of the oil phase; low interfacial tension
of high viscosity of crude oil can flow help reduce the permeability of water phase,
reducing the space occupied by the flow volume (ie, saturation), the lifting of formation
water lock effect, so that oil production increases.
(1) Appearance: colorless or pale yellow liquid;
(2) Density: 0.95 ~ 1.05g/cm3;
(3) Temperature: ≤ 150 ℃;
(4) Surface Tension: ≤ 28mN / m;
(5) interfacial tension: ≤ 0.6mN / m
(6) wetting angle (contact): ≤ 45.
The principle of well selection:
AU-33 wetting agent is mainly used to reverse the low-permeability oil and gas
well construction operations.
In construction operations, into the well fluid can also be added before the flushing
fluid or liquid such as sand-carrying liquid into the well to add, can also be added after
the liquid into the well, the general use of the concentration of 6%.
200kg plastic drum.