A novel high temperature retarder applied to a long cementing interval

Lu, Youcai; Li, Ming; Zihan, Guo; Guo, Xiaolu

doi:10.1039/c5ra24638e

Cited by 23 publications

(13 citation statements)

References 4 publications

(3 reference statements)

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“…The various molecular weight of FDA‐II and its distribution are listed in Table . It can be concluded that the synthesized polymer possesses a relatively high molecular weight ( M n = 298,426 g mol −1 , M w = 645,580 g mol −1 ) and a broad polydispersity index (PDI) of 2.1934, typical for radical polymerization . The high molecular weight is an important characteristic of the synthetic polymer used as fluid loss additive for cementing, which can keep the liquid phase viscosity effectively and prevent the filtrate from invading into the formation or reservoir stratum through aggrandizing its fluid resistance.…”

Section: Results and Disscussionmentioning

confidence: 99%

Zwitterionic copolymer for controlling fluid loss in Oilwell cementing: Preparation, characterization, and working mechanism

Xia

Feng

Guo

et al. 2016

Polymer Engineering & Sci

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The present investigation deals with the problems of unsatisfactory high-temperature resistance, inferior salt tolerance and poor comprehensive performance for the domestic fluid loss additives. In this study, a zwitterionic polymer, 2-acrylamido-2-methylpropanesulfonic acid/diallyldimethylammonium chloride/N,N-dimethylacryl amide/ acrylic acid used as fluid loss agent for oil well cementing, was synthesized by free radical polymerization in aqueous solution with ammonium persulfate and N,N,N 0 ,N 0 -tetramethylethylenediamine as initiator. The optimal synthesis conditions were obtained via singlefactor variable analysis. The compositions, microstructural morphologies, and thermal-stability of polymer were characterized by FT-IR, 1 H NMR, SEM, DTG, and DSC techniques. The results manifested that the synthetic polymer cement slurry exhibited prominent advantages such as excellent fluid loss control capacity, thermal stability (up to 2008C), salt-tolerance (saturated brine) and rheological behavior. Even more strikingly, the zwitterionic polymer showed less impact on hardening cement and accelerated the post compressive strength of set cement, verified through the ultrasonic method. Additionally, the mechanism of fluid loss control was found to rely mainly on improving the filter cake quality and the polymer chemisorptions on the surface of hydrated cement through SEM, permeability and TOC analysis. In consequence, the zwitterionic polymer enhanced the comprehensive properties of cement slurry and had great potential to apply in high temperature and high salinity oil-well cementing. POLYM. ENG. SCI., 57:78-88, 2017.Note: L.O.I is loss on ignition; C 3 S: tricalcium silicate (3CaOÁSiO 2 ); C 2 S: dicalcium silicate (2CaOÁSiO 2 ); C 3 A: tricalcium aluminate (3CaOÁAl 2 O 3 ); C 4 AF: tetra calcium aluminate ferrite (4CaOÁAl 2 O 3 ÁFe 2 O 3 ).

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Section: Results and Disscussionmentioning

confidence: 99%

Zwitterionic copolymer for controlling fluid loss in Oilwell cementing: Preparation, characterization, and working mechanism

Xia

Feng

Guo

et al. 2016

Polymer Engineering & Sci

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“…5 But with the continuous increase of complex well conditions such as deep wells and ultra-deep wells, and higher requirements have been put forward for oil well cement retarders. 6 Commonly, the retarders as an indispensable functional additive for deep well and ultra-deep well cement slurry, which have wide variety, mainly including lignosulfonate, hydroxycarboxylic acid and its salts, polyols and their derivatives, inorganic salts, and carbohydrate compounds. [7][8][9][10][11] Overall, the retarders can be divided into organic compounds and polymers depends on the synthesis methods, molecular structure, and weight.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization, and retarding mechanism of high temperature resistant amphoteric ion polymer oil well cement retarder Poly‐AAMD for HTHP application

Jinhua,

Xing,

Junwei

et al. 2023

J of Applied Polymer Sci

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The amphoteric ion polymer cement retarder Poly‐AAMD was synthesized by aqueous solution polymerization, the chemical structure, molecular weight, and thermal stability was studied. As a result, the Mn and Mw are 1.3 × 104 and 4.7 × 104 g/mol, respectively, and the initial decomposition temperature is 260°C. Then, the effects of retarder Poly‐AAMD on the application performance of cement slurry, such as settlement stability, thickening time, compressive strength, and rheological properties, were investigated. Especially, the thickening time of cement slurry with 1.2 and 1.5 wt% retarder Poly‐AAMD is 312 and 316 min at 220°C, the compressive strength is larger than 14 MPa at 24 h. Compared to conventional retarders, the temperature resistance has been improved to 220°C. Simultaneously, the initial hydration process of cement slurry was studied by low field NMR based on the T2 value. Moreover, the hydration products of cement slurry with retarder Poly‐AAMD were analyzed depends on the qualitative and quantitative analysis methods, the type and content of hydration products were confirmed by the methods of X‐ray diffraction analysis (XRD), scanning electron microscope (SEM), thermogravimetric analysis (TG), and differential thermal analysis (DTG). Finally, the retarding mechanism of retarder Poly‐AAMD was further studied depends on the results of adsorption amount and Zeta potential.

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“…Though the thickening time or setting time is effectively prolonged, the thickening curve of cement slurry containing retarders shows a obvious bulging phenomenon attributed to the decomposition of function groups and molecule chains under high temperature conditions. 12 …”

Section: Introductionmentioning

confidence: 99%

“…This negatively charged layer not only inhibits the hydration process of cement attributed to the shielding effect of polymer layer, but also is favorable to the dispersion of cement particles because of electrostatic repulsion between the cement particles. [18][19][20] The heterogeneous charge distribution on the surface of hydrating cement particles should be responsible for the adsorption behaviors between the cement particles and the retarders.…”

mentioning

confidence: 99%

Synthesis and retarder mechanism study of a novel amphoteric composite high temperature-resistant retarder for oil well cement

et al. 2018

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An amphoteric composite polymer (hereinafter referred to as PAADM) as a high temperature-resistant cement retarder was prepared by in situ intercalated polymerization method with 2-crylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA) and two diallyl dimethyl ammonium chloride (DMDAAC) as monomers, and modified montmorillonite as an active polymerization filler. The synthetic composite polymer was characterized by Fourier transform infrared spectroscopy (FT-IR), H nuclear magnetic resonance (H-NMR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The results of the aforementioned characterization showed that the synthesized copolymer (PAADM) has an intercalation/exfoliation composite structure and excellent thermal stability. Performance evaluation evidenced that the cement slurry containing PAADM has good retarding property in the range of 120- 200C, and demonstrated the rapid development of compressive strength under high temperature and low temperature conditions, this property could guarantee that the retarder PAADM could be applied to the construction of deep wells and long interval wells. Moreover, the retarding mechanism of PAADM was studied through calcium binding capacity, adsorption amount, zeta potential, XRD and SEM analysis, and it was found that "adsorption deposition" and "calcium complexation" should be responsible for this retarder delaying the hydration process of cement grains.

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A novel high temperature retarder applied to a long cementing interval

Abstract: A retarder comprised of sodium styrene sulfonate, itaconic acid and hydroxyethyl methacrylate was synthesized by aqueous free radical copolymerization, which can be applied to a long cementing interval.

Cited by 23 publications

References 4 publications

Zwitterionic copolymer for controlling fluid loss in Oilwell cementing: Preparation, characterization, and working mechanism

Zwitterionic copolymer for controlling fluid loss in Oilwell cementing: Preparation, characterization, and working mechanism

Preparation, characterization, and retarding mechanism of high temperature resistant amphoteric ion polymer oil well cement retarder Poly‐AAMD for HTHP application

Synthesis and retarder mechanism study of a novel amphoteric composite high temperature-resistant retarder for oil well cement

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