Relations Between Structure and Efficiency of Polymeric Additives for Drilling Fluids

Lecourtier, J.; Degouy, Didier

doi:10.2516/ogst:1994010

Cited by 6 publications

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“…Then, the distribution of the clay particle size is changed, and then, a thin and low permeable filter cake is formed to prevent the loss. 29,34 Similarly, the changes of the filtration loss also present a declining trend with the increasing of the quadripolymer concentrations for the 4.0 wt % salt water-and saturated brine waterbased drilling fluids ( Figures 6 and 7). Apparently, the FL API before and after the thermal aging test and the FL HTHP after the thermal aging test in 4.0 wt % salt water-and saturated brine water-based drilling fluids are larger than that in fresh waterbased drilling fluid at the same concentration of the quadripolymer.…”

Section: Filtrate Properties Of the Quadripolymer Drilling Fluidmentioning

confidence: 80%

“…The adsorption groups ( N + and –CONH 2 ) of the quadripolymer can adsorb on the surface of clay particles through electrostatic interaction and hydrogen band, which increases the zeta potential of the clay particles. Then, the distribution of the clay particle size is changed, and then, a thin and low permeable filter cake is formed to prevent the loss …”

Section: Resultsmentioning

confidence: 99%

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Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water‐based drilling fluid

Bai

Yang

Xiao

et al. 2014

J of Applied Polymer Sci

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According to the molecular structure design requirements of the fluid loss additive resistant to high temperature, 2‐acrylamide‐2‐methyl propane sulfonic acid (AMPS), acrylamide (AM), dimethyl diallyl ammonium chloride (DMDAAC) and sodium styrene sulfonate (SSS) are selected as the structure monomers. Using ammonium persulfate as initiator, a new quadripolymer is synthesized through free radical aqueous solution polymerization. According to the minimum filtration loss of the fresh water‐based drilling fluid with 0.5 wt % quadripolymer, The synthesis conditions are optimized by orthogonal test: the mole ratio of AMPS/AM/DMDAAC/SSS is 5/7/2/1, the monomer concentration is 30 wt %, the initiator concentration is 0.8 wt %, the reaction temperature is 75°C and the pH is 10. The structure of the quadripolymer is characterized by Fourier transform infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy. The results show that the quadripolymer contains all the designed functional groups. The thermal stability of the quadripolymer is tested by thermogravimetry, differential thermogravimetry, and differential scanning calorimetry. The results show that the thermal degradation of the quadripolymer is not obvious before 272.3°C. The rheological performance and filtration loss of the quadripolymer are evaluated. The results indicate that the filtration loss decreases with the increasing dosage of the quadripolymer before and after thermal aging test at 180°C for 16 h, and the filtration loss before the thermal aging test is smaller than that after the thermal aging test. The high temperature high pressure filtration loss (FL(HTHP)) experiment results also show that the quadripolymer fluid loss additive has excellent temperature‐resistant performance. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41762.

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Section: Filtrate Properties Of the Quadripolymer Drilling Fluidmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water‐based drilling fluid

Bai

Yang

Xiao

et al. 2014

J of Applied Polymer Sci

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“…Os produtos industrialmente importantes apresentam graus médios de substituição inseridos em uma faixa relativamente restrita, entre 0,5 a 1,5, contudo seu valor pode atingir um máximo de 3,0. Nos últimos anos trabalhos foram desenvolvidos visando avaliar o efeito da adsorção de polímeros em argilas bentoníticas [12][13][14] a influência de polímeros de pequena cadeia molecular na reologia de dispersões de argilas bentoníticas [15], a correlação entre a estrutura e a eficiência de aditivos poliméricos para fluidos de perfuração [7,16] e a relação entre a composição, a estrutura [17].…”

Section: Materiaisunclassified

Efeitos De Aditivos Poliméricos Nas Propriedades Reológicas E De Filtração De Fluidos De Perfuração

Lucena¹,

Lira²,

Amorim³

2014

TMM

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ResumoA influência da carboximetilcelulose, CMC, (redutor de filtrado) e da goma xantana (viscosificante), nas viscosidades aparente e plástica, no limite de escoamento e no volume de filtrado na composição de fluidos de perfuração à base de água foi investigada com base no delineamento estatístico. Cinco formulações compostas por uma faixa de concentração utilizada comercialmente foram utilizadas na concepção da experiência. As formulações foram preparadas de acordo com os padrões da empresa Petrobras. Foram calculados modelos de regressão, correlacionando as propriedades com as composições. A importância e a validação dos modelos foram confirmadas pela análise estatística. O desenho estatístico pode ser aplicado para otimizar as propriedades da lama considerando adição de CMC e da goma xantana, e para obter um melhor entendimento sobre a influência de aditivos sobre as propriedades de polímeros de sistemas de fluidos de base água. A partir do estudo observou-se que os valores das propriedades reológicas variaram com a concentração dos aditivos, aumentando com o aumento da concentração dos mesmos, e que o aumento da concentração dos aditivos promoveu uma diminuição dos valores dos parâmetros de filtração. Palavras-chaves: Fluidos poliméricos; Viscosificante; Redutor de filtrado; Delineamento estatístico. EFFECTS OF PROPERTIES POLYMERIC ADDITIVES IN RHEOLOGIC AND DRILLING FLUIDS AbstractThe influence of carboxymethylcellulose, CMC (filtrate reducer) and xanthan gum (viscosifier) in plastic and apparent viscosity at yield strength and the volume of filtrate in the composition of drilling fluids based on water was investigated based on statistical design. Five formulations consist of a range of concentrations used commercially were utilized in the design of the experiment. The formulations were prepared in accordance with company standards Petrobras. Regression models were calculated and correlated with the properties of the compositions. The relevance and validation of the models were confirmed by statistical analysis. The design can be applied to statistically optimize the mud properties considering the addition of CMC and xanthan gum, and to provide a better understanding of the influence of additives on the properties of polymer-based fluid system water. From the study it was observed that the values of the rheological properties vary with the concentration of additives, increasing with increasing concentration of the same, and that the concentration of the additives caused a decline of parameter values filtration. Keywords: Polymeric fluids; Viscosifier; Filtrate reducer; Statistical design. INTRODUÇÃOA incorporação de polímeros como componentes de fluidos de perfuração figura atualmente como uma das principais alternativas para adequação das propriedades que o fluido deve apresentar na atividade de perfuração de poços de petróleo [1].Os fluidos de perfuração apresentam várias propriedades físico-químicas que devem ser levadas em consideração durante sua aplicação [2]. As soluções poliméricas colocam-se como ...

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“…The hydrophobically modified prevent the water uptake by the clay and hence their swelling and dispersion in aqueous medium. Although it is well known that the polymer adsorption plays an important role on the shale inhibition, there are few studies reporting the influence of the structure of the polymers on the maintenance of the clay cuttings integrity or even the stability of the wellbore 29‐31…”

Section: Introductionmentioning

confidence: 99%

Hydrophobically modified poly(ethylene glycol) as reactive clays inhibitor additive in water‐based drilling fluids

Souza

Lima

Nascimento

2010

J of Applied Polymer Sci

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Adsorption measurements and inhibition tests were used to investigate the mechanisms of shale stabilization by hydrophobically modified poly(ethylene glycol) (PEG). Commercially available PEG with a large range of molar masses and PEG diesters were adsorbed on smectiterich clay from saline solutions and the clay/polymer complexes obtained were characterized by thermogravimetric analysis and x-ray diffraction. The adsorption isotherms obtained for all unmodified PEG showed low affinity for the clay surface, however they all accessed the interlamellar spaces of the clay and reduced the clay water content of the complexes obtained. The PEG macromolecules had their affinity for the clay strongly enhanced by the hydrophobic modification especially with dodecanoic acid and were intercalated into the clay matrix, reducing, in a more efficient way, the water uptake by the clay. Conventional rolling tests were performed to evaluate the effect of polymers on the clay cuttings integrity. Results show that under conditions promoting the adsorption of polymers on both external and interlayer clay surfaces, displacement of the water from the clay was obtained and dispersion and disintegration of clay cuttings were inhibited.

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Relations Between Structure and Efficiency of Polymeric Additives for Drilling Fluids

Cited by 6 publications

References 0 publications

Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water‐based drilling fluid

Synthesis, characterization, and performance evaluation of the AM/AMPS/DMDAAC/SSS quadripolymer as a fluid loss additive for water‐based drilling fluid

Efeitos De Aditivos Poliméricos Nas Propriedades Reológicas E De Filtração De Fluidos De Perfuração

Hydrophobically modified poly(ethylene glycol) as reactive clays inhibitor additive in water‐based drilling fluids

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