Product Bulletin
POLY-PLUS POLY-PLUS polymer is a high-molecular-weight, anionic liquid
designed to provide cuttings encapsulation and shale stabilization.
POLY-PLUS also acts as a viscosifier, friction reducer and flocculant
while providing some fluid-loss control. POLY-PLUS can be used in
mud systems ranging from low-solids to weighted, utilizing
makeup waters from fresh to saltwater.
. . . . . . . . . . . .
Physical appearance Cream-colored, opaque liquid
TYPICAL PHYSICAL Odor . . . . . . . . . . . . . . . . . . . . . . . . Slightly hydrocarbon
PROPERTIES Specific gravity . . . . . . . . . . . . . . . . 1.07 鈥? 1.10
pH (1% solution) . . . . . . . . . . . . . . 8鈥?9
Flash point . . . . . . . . . . . . . . . . . . . >200掳F (93.3掳C) (PMCC)
Pour point . . . . . . . . . . . . . . . . . . . -20掳F (-28.9掳C)
Viscosity (typical) . . . . . . . . . . . . . . ~500 cp
Concentration* Equivalents
lb/bbl (kg/m3) gal/bbl (l/m3)
0.50 (1.4) 0.056 (1.3)
0.75 (2.1) 0.084 (2.0)
1.00 (3.0) 0.110 (2.6)
1.50 (4.3) 0.170 (4.0)
*Based on 30% active material
POLY-PLUS polymer mud systems. drilling fluids. POLY-PLUS increases vis-
POLY-PLUS provides excellent cut- cosity and enhances solids removal
APPLICATIONS
tings encapsulation and improved by flocculating the undesired solids. It
wellbore stability. Typical concen- also provides cuttings encapsulation
trations of POLY-PLUS are 0.75 to and improved wellbore stability. This
3 lb/bbl (2.1 to 8.5 kg/m3). It is also system is frequently used in slimhole
effective in salt muds, such as KCl- continuous-coring applications. The
or NaCl-enhanced fluids, although addition of 0.5 to 1.75 lb/bbl (1.4 to
slightly higher concentrations of 5 kg/m3) enhances solids removal by
POLY-PLUS may be required. flocculating solids.
Clear-water fluids. POLY-PLUS may
be used in clear-water, solids-free
Typical Properties of POLY-PLUS in Freshwater
APPLICATIONS
Concentration PV YP Marsh Funnel
(CONTINUED)
(lb/bbl [kg/m3]) (cp) (lb/100 ft2) (sec/qt)
0.50 (1.4) 2 2 35
0.75 (2.1) 3 3 37
1.00 (2.9) 4 4 39
1.50 (4.3) 8 8 43
Low-Solids, Non-Dispersed stability, secondary viscosity and to
(LSND) muds. POLY-PLUS is well improve filter cake integrity. The
suited to LSND systems. In reduced- effectiveness of the polymer is
bentonite muds, POLY-PLUS serves as reduced as the concentration of
a bentonite extender to increase vis- organic, anionic dispersants increases.
cosity, flocculates drill solids for more POLY-PLUS sweeps. Viscous POLY-PLUS
efficient removal, encapsulates cut- sweeps are effective for periodic hole
tings and improves wellbore stability. cleaning. Circulating such a sweep
Weighted muds. POLY-PLUS can be through the well helps clear accu-
used in weighted muds for cuttings mulated cuttings and maintain a
encapsulation, improved wellbore clean hole.
POLY-PLUS may be mixed directly into the flowline will provide selective
the active mud system or premixed flocculation of drill solids. Caustic
METHOD OF ADDITION
at higher concentrations in a sepa- and lime should not be mixed at
rate pit or chemical barrel, then the same time as POLY-PLUS.
blended into the active system. It Sweeps may be accomplished
can be poured directly into the pits by mixing POLY-PLUS directly in
at any point where good agitation the active system at the suction
exists such as over a mixer, or added pit or by pouring 3 to 4 qt (2.8 to
through the mixing hopper or 3.8 L) directly into the drillstring
chemical barrel. A small, steady during connections.
stream of POLY-PLUS injected into
POLY-PLUS reacts with multivalent along with a pH-reducing product
cations such as calcium. In con- such as lignite to treat cement
CONTAMINATION
centrations greater than 300 mg/L, contamination.
calcium causes the polymer to pre- Zinc oxide is recommended if
cipitate. Use soda ash to remove hydrogen sulfide gas is encoun-
calcium concentrations above tered. Zinc oxide is preferred to liq-
300 mg/L. uid products containing zinc. Due
Treat cement contamination to to lower solubility, zinc oxide does
keep the calcium and pH as low as not react with POLY-PLUS as readily
possible. Use sodium bicarbonate as liquid products that contain zinc.
鈥? Provides excellent cuttings 鈥? Liquid product for easy mixing
encapsulation and limits and rapid yield.
ADVANTAGES
cuttings dispersion. 鈥? Improves the lubricity of most
鈥? Provides improved shale mud systems, particularly non-
stabilization. dispersed muds, when used in
鈥? Enhances the removal of drill solids. combination with a lubricant.
鈥? Aids in preventing balling on 鈥? Low pour point of -20掳F (-28.9掳C)
the bit, stabilizers and bottom- for easy use in cold climates.
hole assembly by coating and 鈥? Can be used to viscosify clear-
lubricating solids. water and low-solids drilling fluids.
The following limitations apply to 鈥? POLY-PLUS is temperature-stable to
all acrylamide/acrylate copolymers: approximately 350掳F (176.7掳C)
LIMITATIONS
although the copolymer may
鈥? During initial treatment with
begin to hydrolyze into polyacry-
POLY-PLUS in a non-dispersed mud
late when exposed to prolonged
system, severe flocculation may
temperatures above 275掳F (135掳C)
occur, causing high viscosity until
and release ammonia (NH3).
all of the solids are coated. POLY-PLUS
鈥? POLY-PLUS is subject to shear
polymer mud systems utilize low
degradation of its viscosity and
concentrations (<15 lb/bbl or
may eventually lose the ability to
<43 kg/m3) of M-I GEL to reduce
viscosify, but cuttings encapsula-
this interaction. Continued addi-
tion and shale stabilization will
tions of POLY-PLUS result in a stable
not be affected.
system with the desired rheology.
鈥? POLY-PLUS is calcium-sensitive and
begins to precipitate when the
calcium concentration exceeds
300 mg/L.
鈥? POLY-PLUS is pH-sensitive, with an
optimum range of 8.5 to 10.5. At
pH levels above this range, hydrol-
ysis may convert polyacrylamide
into polyacrylate and release
ammonia (NH3).
Bioassay information is available Small spills should be wiped up
TOXICITY upon request. POLY-PLUS contains with disposable towels or cleaned
AND HANDLING mineral oil and may not be up with an absorbent material such
acceptable for certain applications. as sawdust or rig sweep. Undiluted
Handle as an industrial chemical, POLY-PLUS should not be washed
wearing protective equipment down with water.
and observing the precautions as
described on the Transportation and
Material Safety Data Sheet (MSDS).
POLY-PLUS is packaged in 5-gal POLY-PLUS containers. Store in a
PACKAGING (18.9-L), plastic cans. well-ventilated area away from
AND STORAGE Keep containers sealed and do sources of heat or ignition.
not allow water to contaminate
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