Why Cement Fluid Loss Additives Are Necessary

Baret, J. F.

doi:10.2118/17630-ms

Cited by 27 publications

(5 citation statements)

References 9 publications

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“…Excessive loss of cement slurry filtrate [4] is danger in cementing operation in pumping, displacement and waiting during the cure -WOC because it increases the density of the cement slurry, changing the rheological properties, thickening time, creates bridges dehydrated cementitious materials. By the chemical nature of the additives to control the filtrate loss of cellulose derivatives, synthetic polymers, asphaltenes, thermoplastic resins, bentonite., And work-related increase in viscosity of water, creating a polymer film on the filter cake particles and cement packing and particle size.…”

Section: Filtrate Lossmentioning

confidence: 99%

Aplication of Local Cement for Cementing Oil Wells in the South Eastern Region of the Pannonian Basin

Bošković¹,

Čebašek²,

Gojković³

2013

AFST

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Wells conditions are different in wide range of temperature and depth. Cement slurries in such conditions have to remain pumpable and after setting to stay homogenous in production well life. For cementing operations in wide range of temperature and pressure and to accommodate cement slurries for individual well requirements more than 50 additives are now used for various API classes of cement. Laboratory in NIS -National oil company of Serbia, provides cement analysis of dry cement, tests on cement slurries and cement stone in compliance with methods prescribed by API standard, whereby quality and type of equipment fully meet the requirements. Adaptation of the local cement to the well conditions had already been done by these additives and by numerous tests of pure cement and cement mixtures we developed a palette of typical cement mixtures for cementing oil wells in the south eastern region of the Pannonian basin.

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Section: Filtrate Lossmentioning

confidence: 99%

Aplication of Local Cement for Cementing Oil Wells in the South Eastern Region of the Pannonian Basin

Bošković¹,

Čebašek²,

Gojković³

2013

AFST

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“…It is well-known that the filtration characteristics of cement slurry play a key role in ensuring the safety of oil well cementing operation and improving the cementing quality. 2 -4 Excessive fluid loss (FL) of cement slurry endangers a cementing operation no matter during placement or during waiting-on-cement. The filtrate loss control additives are often used to reduce FL of cement slurry, which is different from those used in drilling fluid.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel amphoteric polymer for oil well cementing with superior performances

Tang

Xuzeng

Haodong

2020

Polymers and Polymer Composites

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A novel amphoteric polymer TH-1 was synthesized using the monomers of 2-acrylamido-2-methylpropane sulfonic acid, acrylic acid, acrylamide, and cationic monomer through radical copolymerization as filtrate loss reducer in oil well cementing. Optimal synthesis conditions of TH-1 were obtained by an orthogonal experiment. The composition of copolymer (TH-1) was characterized by Fourier-transform infrared spectrum and proton nuclear magnetic resonance spectroscopy. The thermal stability of the synthesized copolymer was tested by thermogravimetric analysis. The fluid loss (FL) control and thickening performance of cement slurry incorporating TH-1 were evaluated at different temperatures. The filtration reduction mechanism of TH-1 was finally discussed. Results suggest that the amphoteric polymer is the target product polymerized by all the monomers, which presents excellent filtrate reduction property, high thermal stability, and strong saline tolerance under 200°C. The amphoteric polymer TH-1 includes cationic and anionic group in a molecule structure, which can adsorb firmly onto the surface of cement particles through electrostatic attraction and form adsorption membrane of viscoelastic polymer. In this way, compact cement filter cakes are formed, thereby efficiently reducing the FL.

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“…The placement process requires the use of suitable cement slurry to ensure secure and effective operation. It is well known that the filtration characteristics of cement slurry play a key role in ensuring the safety of oil well cementing operation and improving the cementing quality . When the cement slurry is pumped along porous formations in the bore hole, the loss of water from it can result in excessive density increase or form annulus bridging blockage, which effect cementing operation safety.…”

Section: Introductionmentioning

confidence: 99%

“…When the cement slurry is pumped along porous formations in the bore hole, the loss of water from it can result in excessive density increase or form annulus bridging blockage, which effect cementing operation safety. In oil and gas producing zones, the filtrate invasion will decrease the relative permeability of the fluids in the reservoir, which can cause a significant decrease in the well's productivity . So, for the different cementing jobs, the filtration has different scopes.…”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of AMPS/AA/DMAA/SA copolymer as a filtrate reducer for oil well cementing

Tang

Yang

2016

J of Applied Polymer Sci

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A new water‐soluble polymer was prepared and evaluated as a filtrate reducer for oil well cementing. The filtrate reducer (WSP) was synthesized from 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS), acrylic acid (AA), dimethyl acrylamide (DMAA), and sodium allylsulfonate (SA) by aqueous free radical polymerization. The synthesis conditions were optimized by orthogonal experiment. The molecule structure of the synthesized copolymer (WSP) was verified by Fourier transformer infrared spectrum (FTIR) and nuclear magnetic resonance hydrogen spectroscopy (1H‐NMR). The molecule weight of the synthesized copolymer was determined by gel permeation chromatography (GPC). The thermal stability of the synthesized copolymer was tested by thermogravimetry and differential thermogravimetry (TG and DTG). When the dosage of WSP is up to 3% in fresh water cement slurry, the FLAPI can be controlled within 58 mL. In 37% salt water cement slurry, the FLAPI can be controlled within 90 mL when the dosage of WSP is 5%. The thermal degradation of WSP is not obvious before 289 °C. Compared with a commercial filtrate reducer BS‐100L and a reported copolymer HTF200C, the WSP has better performance. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43824.

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Why Cement Fluid Loss Additives Are Necessary

Abstract: With respect to the fluid loss behaviour of a cement slurry basically two stages need be considered: (i) a dynamic

Cited by 27 publications

References 9 publications

Aplication of Local Cement for Cementing Oil Wells in the South Eastern Region of the Pannonian Basin

Aplication of Local Cement for Cementing Oil Wells in the South Eastern Region of the Pannonian Basin

Preparation and characterization of a novel amphoteric polymer for oil well cementing with superior performances

Preparation and performance of AMPS/AA/DMAA/SA copolymer as a filtrate reducer for oil well cementing

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