OILFIELD SERVICES

Cut the water,
not the oil.
Extend the economic
life of your well.
AquaCUT Plus relative
permeability modifier

High water cut in oil and gas wells leads to a host ofproblems, and ultimately impacts the economic life ofyour well. Typical solutions are indiscriminate, blocking
both water and hydrocarbon production, and often require
costly workovers and long shut-in times. Specifically inmature fields, the cost and risks associated with theseconventional methods outweigh return-on-investment
AquaCUT™ Plus (RPM) from Baker Hughes, is a subsurface
water conformance product that decreases the water
cut in mature sandstone and carbonate wells, reducing
associated processing and disposal costs while also
extending the productive life of the well. By selectively
targeting only the water phase of produced fluids, AquaCUT
Plus RPM products reduce the amount of produced waterwith minimal impact on hydrocarbon production.

REDUCE WATER PRODUCTION

In the presence of oil, the AquaCUT Plus RPM components
deform and minimize the restriction of the formationpore throat, allowing oil or gas to flow unimpeded.
Alternatively, in the presence of water, the water-wetting
polymer expands, filling the pore throats which increases
the resistivity of water flow. AquaCUT Plus RPM can bebullheaded or pumped through coiled tubing (CT) totarget and dramatically decrease the water phase of

produced fluids, including high-salinity brines. Althoughbest used for reservoirs producing excessive water
through matrix flow, AquaCUT Plus RPMs can also be used
for temporary mitigation of water production throughwater coning.

APPLICATIONSCUT COSTS AND EXTEND THE ECONOMIC
LIFE OF YOUR WELL

• Mature wells with low pressure

The ability to selectively restrict water, versus shutting
off all fluid flow, helps reduce costs while extending theeconomic life of your well. Wells that may have been
shut in due to surface water handling/disposal can
now be revitalized, increasing salable production. Less
water means less build-up of scale, helping to decrease
maintenance and treatment facility expenses. Decreased
water production results in reduced water treatment anddisposal, which helps to reduce CO2 emissions. Decreased
water production also minimizes the cost of downhole
pump repair and surface costs for storage and handling−
improving lifting costs per unit of production. By increasing
saleable production and reducing water production,
AquaCUT Plus RPM treatments can often yield impressive
results in economic performance.

• Sandstone formations• Carbonate formations up to 350°F (177°C)• High water-cut wells with recoverable reserves
near oil-to-water contact

BENEFITS• Improves well economics by reducing water production
and increasing oil or gas flow through enhanced
drawdown and hydrocarbon inflow• Reduces water disposal costs• Eliminates costly conventional workovers• Reduces CO2 emissions by decreasing the volumesof produced water for treatment and disposal• Mitigates inorganic scaling due to reduced
water production• Increases sellable production while decreasing
disposal production• Decreases lifting costs per unit of production

Polymer attaches to the sandstone formation through a covalent bond—preferentially in tight spots (pore throats). The highly water-wetting
polymer “lays down” in the presence of hydrocarbons (repelled).

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In the presence of water, the highly water-wetting polymer expands, filling pore throats, thereby increasing resistance to water flow (Rw).