Synthesis and characterization of SSS/HAM/AA terpolymer as a fluid loss additive for oil well cement

Abstract

A terpolymer comprising of sodium styrene sulfonate (SSS), n-methylol acrylamide (HAM), and acrylic acid (AA) was synthesized by aqueous free radical copolymerization and evaluated as fluid loss additive (FLA) in oil well cement. In this article, HAM is first introduced in the preparation of FLA as an environment-friendly monomer, which effectively improves the adhesion and fluid loss control of the terpolymer. The experimental synthesis conditions were optimized by orthogonal experiments. The molecule weight of the terpolymer was determined by gel permeation chromatography. The molecule structure of the synthesized terpolymer was verified by Xray photoelectron spectroscopy and Fourier transformer infrared spectrum. The thermal stability of the synthesized terpolymer was tested by thermogravimetry (TG). The structure of the terpolymer aqueous solution was observed by scanning electron microscope. The results show that SSS/HAM/AA has an excellent thermal resistant. The thermal degradation is not obvious before 295.2 8C. Furthermore, the microstructure of SSS/HAM/AA in water conducive to good fluid loss control ability. When the dosage of SSS/HAM/AA is up to 2.0% in fresh water cement slurry, the filtration loss [FL (HTHP) ] can be controlled within 50 mL at 90-150 8C. SSS/HAM/AA has an excellent property of reducing filtration loss.

“The behavior of some terpolymers as lubricating oil additives”

“…The molecular weights of different prepared terpolymers were determined by Gel Permeation Chromatography (GPC) waters model 510 using polystyrene standard, Ultra-styragel column, and tetrahydrofuran as an eluent [12].…”

Preparation and performance evaluation of hydrophobically associating polymer anti‐water channeling agent for oil well cement

“…It can be seen from Table 1 that SMAL has a great influence on the fluidity of cement slurry, and the fluidity of cement slurry decreases with the increase of the amount of water‐resistant polymer, which is caused by the viscosification effect of SMAL. The water loss of cement slurry decreases with the increase of hydrophobic polymer, because SO 3 H and COOH in SMAL have good adsorption capacity for cement particles, and the molecules in cement slurry have strong binding force, which reduces the water loss of cement slurry 36–38 . The thickening time of cement slurry also increased with the addition of SMAL, which was mainly caused by the retarding action of COOH functional groups in the hydrophobic polymer.…”

“…The water loss of cement slurry decreases with the increase of hydrophobic polymer, because SO 3 H and COOH in SMAL have good adsorption capacity for cement particles, and the molecules in cement slurry have strong binding force, which reduces the water loss of cement slurry. [36][37][38] The thickening time of cement slurry also increased with the addition of SMAL, which was mainly caused by the retarding action of COOH functional groups in the hydrophobic polymer.…”

Synthesis and Performance Study of Amphoteric Ion Fluid Loss Additive SSS/AM/FA/DMDAAC

“…In the context of cementing oil wells, the incorporation of a uid loss additive has been found to be a viable approach for managing water loss in cement slurry. This practise serves to preserve the desired density and rheological characteristics of the cement slurry, hence contributing to the overall effectiveness of the cementing operation.. At present, commonly used polymer uid loss agents mainly consist of binary or ternary copolymers formed by 2-acrylamido-2-methylpropane sulfonic acid and other monomers [7][8][9][10][11][12][13][14] . Therefore, researching new uid loss additives with high temperature resistance, good compatibility with other additives, and no negative impact on uid loss performance is currently a topic of great research value and signi cance.…”