Rheological properties of polymer-gel drilling fluids at high temperature and pressure

Bu, Hai Shan; Sun, Jinsheng; Wang, Chengbiao; Bu, Pengcheng

doi:10.1007/s10553-013-0394-z

Cited by 16 publications

(3 citation statements)

References 5 publications

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“…Ultimate high‐shear viscosity can approximately represent the flow resistance of drilling fluids in the turbulent state at the bit nozzle. The model can be expressed as follows 41,42

τ^{1 / 2} = τ_{c} + {η_{\infty}}^{1 / 2} γ^{1 / 2} .

…”

Section: Resultsmentioning

confidence: 99%

Terpolymer with rigid side chain as filtrate reducer for water‐based drilling fluids

Yang

Liu

et al. 2020

J of Applied Polymer Sci

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Synthetic copolymers as filtrate reducers for water‐based drilling fluids (WBDFs) are difficult to meet the needs of drilling engineering only by changing the type and proportion of functional groups of copolymers, especially under ultra‐high temperature and high salinity. In this study, an anionic terpolymer (named PSDI) with rigid side chain was synthesized using sodium p‐styrenesulfonate, N, N‐Dimethylacrylamide, and itaconic acid by free‐radical copolymerization. The chemical structure of PSDI was characterized by Fourier transform infrared spectroscopy and 1H‐NMR spectrum. The high‐temperature/high‐pressure filtration loss (FLHTHP) and the American Petroleum Institute filtration loss (FLAPI) of the WBDFs containing 1.5 wt/vol% PSDI were 35.0 and 17.0 ml after thermal rolling at 240°C for 16 h, respectively. The FLHTHP and FLAPI of the WBDFs containing saturated NaCl were with control of 60.0 and 12.0 ml. The FLAPI of WBDFs containing 1.5 wt/vol% CaCl2 reduced to 6.0 ml. Results indicate that the addition of PSDI can improve the anti‐high‐temperature performance and resistance to salt and calcium contamination of WBDFs. Results of rheological tests through fitting four rheological models suggest that rheological parameters can be improved as a result of forming the spatial network structure between the PSDI and bentonite flakes.

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“…Ultimate high‐shear viscosity can approximately represent the flow resistance of drilling fluids in the turbulent state at the bit nozzle. The model can be expressed as follows 41,42

τ^{1 / 2} = τ_{c} + {η_{\infty}}^{1 / 2} γ^{1 / 2} .

…”

Section: Resultsmentioning

confidence: 99%

Terpolymer with rigid side chain as filtrate reducer for water‐based drilling fluids

Yang

Liu

et al. 2020

J of Applied Polymer Sci

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“…(Ahmet et al 2013) investigated a variety of chemical commercial lubricants on drilling mud (water-based lignosulfonate) rheology and drilling lubricity using a lubricity tester to evaluate the best lubricity/cost ratio of lubricant compositions, noting that the presence of high chloride ion content leads to reduced efficiency in drilling fluid lubricity and rheology. Further studies addressing the modification in drilling fluid lubricity and flow efficiency have been communicated by (Olatunde et al2012;Behnamanhar et al 2014;Slawomir et al 2009) and for polymeric gel additives in drilling fluids (Bu et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Experimental study of improved rheology and lubricity of drilling fluids enhanced with nano-particles

et al. 2018

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“…High water absorption resins are the polymer with certain crosslink network, containing strong hydrophilic groups such as hydroxyl and carboxyl groups . Owing to their excellent water retention, the high water absorption resins have been widely used in gardening, medicine and pharmacy, construction, packaging material, oil drill, fire extinguishers, and some other fields.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a temperature‐sensitive hydrogel based on sodium alginate and N‐isopropylacrylamide

Cheng

Nie

et al. 2015

Polymers for Advanced Techs

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In this study, a temperature‐sensitive hydrogel was synthesized using N‐isopropylacrylamide (NIPAm), acrylic acid, sodium alginate (SA), and starch as the raw materials, ammonium persulfate as the initiator, and N,N′‐methylenebisacrylamide as the crosslinker by the free radical polymerization. The structure and properties of the hydrogel were studied. The morphology and structure were characterized by scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy was used to investigate the effects of the amount of NIPAm, SA, crosslinker, and initiator on the swelling rate (SR) of the hydrogel. The SEM images show that the surface of the hydrogel was uneven and covered with pores, sockets, and laminated intervals, favoring the swelling. The pore size increased with increasing SA amount. The volume phase transition temperature of the hydrogel decreased at a higher NIPAm amount. The SR of the hydrogel stabilized with increasing amount of SA. Increasing amount of NIPAm decreased the SR, and increasing amount crosslinker and initiator increased SR initially, followed by a decrease. Copyright © 2015 John Wiley & Sons, Ltd.

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Rheological properties of polymer-gel drilling fluids at high temperature and pressure

Cited by 16 publications

References 5 publications

Terpolymer with rigid side chain as filtrate reducer for water‐based drilling fluids

Terpolymer with rigid side chain as filtrate reducer for water‐based drilling fluids

Experimental study of improved rheology and lubricity of drilling fluids enhanced with nano-particles

Synthesis and characterization of a temperature‐sensitive hydrogel based on sodium alginate and N‐isopropylacrylamide

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