Surflo-H35 increases production

Journal Article · Wed Jan 01 04:00:00 EST 1969 · Baroid News Bull.; (United States)

OSTI ID:6885475

Hogue, G W

Calcium sulfate scale, long a plague to oil men, is yielding to Baroid's Surflo-H35 in W. Texas, and the removal of this sulfate scale is significantly increasing production. The inhibitor, when properly applied, will disintegrate deposited calcium sulfate scale. Increasing the pH of the system with sodium or potassium hydroxide accelerates and enhances the action of the inhibitor on scale, and will convert the hard calcium sulfate crystal into a pumpable suspension of finely divided solids. The removal treatment eliminates the needs to follow the treatment with acid which might alter the limestone formation and means that disintegration is not dependent upon the conversion of outside layers of scale to an acid-soluble fraction. Methods for treatment of wells are described. It is noted that application of the inhibitor varies. It has been used in fracturing, spearheading or tailing-in an acid job, and can be mixed directly in acid. The most common method of inhibition is a simple squeeze technique. The inhibitor is mixed in a volume of fresh water proportional to the coverage anticipated and the mixture is then pumped back into the formation and over-flushed with 50 to 100 bbl of produced water. Phosphate counts are monitored to determine when the well should be treated again for inhibition. Although calcium sulfate scale remains a problem for W. Texas producers, its costly effect on production can be diminished by inhibitors.

• OSTI ID: 6885475
• Journal Information: Baroid News Bull.; (United States), Journal Name: Baroid News Bull.; (United States) Vol. 21:1; ISSN BNBUD
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
CAUSTIC FLOODING
CHEMICAL COMPOSITION
COMMINUTION
CONTROL
CORROSION INHIBITORS
CORROSION PROTECTION
COST
DESCALING
DISPERSIONS
FEDERAL REGION VI
FLUID INJECTION
FRACTURING
HYDRAULIC FRACTURING
HYDROGEN COMPOUNDS
HYDROXIDES
NORTH AMERICA
OIL WELLS
OPERATING COST
OXYGEN COMPOUNDS
PH VALUE
PHOSPHATES
PHOSPHORUS COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PRODUCTIVITY
SCALE CONTROL
SCALING
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STIMULATION
SULFATES
SULFUR COMPOUNDS
SURFACE FINISHING
SUSPENSIONS
TEXAS
USA
WATERFLOODING
WELL STIMULATION
WELLS