Inhibition of barium sulfate deposition by polycarboxylates of various molecular structures

Journal Article · Thu Feb 01 04:00:00 EST 1990 · SPE (Society of Petroleum Engineers) Production Engineering; (USA)

DOI:https://doi.org/10.2118/17914-PA· OSTI ID:7017312

van der Leeden, M C; van Rosmalen, G M ^[1]

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1. Delft Univ. Technology (NL)

To establish a relationship between the molecular structure of polycarboxylates and their growth-retarding influence on barium sulfate, seeded-suspension-growth experiments were performed at various inhibitor concentrations and pH values. Two types of polycarboxylates with a molecular structure based on their polyacrylic or maleic acid were studied. The molecular structure of these compounds were varied by particle substitution with monomers containing hydroxyl, amide, and sulfonic acid, as well as hydrophobic groups. Hydrophobic groups are detrimental to good inhibitor performance, whereas the introduction of OH, NH {sub 2}, or SO {sub 3} H groups presents opportunities to enhance the inhibitor effectiveness. The sequence in performance of the compounds on barium sulfate was compared with the sequence formerly obtained for calcium sulfate dihydrate.

• OSTI ID: 7017312
• Journal Information: SPE (Society of Petroleum Engineers) Production Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Production Engineering; (USA) Vol. 5:1; ISSN SPENE; ISSN 0885-9221
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
CALCIUM COMPOUNDS
CALCIUM SULFATES
CARBOXYLIC ACIDS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CONTROL
CORROSION INHIBITORS
CORROSIVE EFFECTS
DEPOSITION
DICARBOXYLIC ACIDS
DRILLING
DRILLING FLUIDS
FLUIDS
KINETICS
MALEIC ACID
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
REACTION KINETICS
SCALE CONTROL
SULFATES
SULFUR COMPOUNDS
TECHNOLOGY ASSESSMENT
WELL DRILLING
WELLS