Synthesis, characterization and working mechanism of a novel sustained-release-type fluid loss additive for seawater cement slurry

2018 ◽  
Vol 524 ◽  
pp. 434-444 ◽  
Author(s):  
Lei Cao ◽  
Jintang Guo ◽  
Jianhua Tian ◽  
Yang Xu ◽  
Miaomiao Hu ◽  
...  
Keyword(s):  
Sustained Release ◽  
Fluid Loss ◽  
Cement Slurry ◽  
Working Mechanism ◽  
Fluid Loss Additive

Salt-Tolerance Performance of Oil Well Cement Fluid Loss Additive SSS/HAM/IA

2020 ◽  
Vol 993 ◽  
pp. 1351-1355
Author(s):  
Wei Yuan Xiao ◽  
Ming Li ◽  
Dong Bo Xie
Keyword(s):  
Salt Tolerance ◽  
Water Loss ◽  
Environmental Scanning Electron Microscopy ◽  
Environmental Scanning ◽  
Fluid Loss ◽  
Oil Well ◽  
Cement Slurry ◽  
Oil Well Cement ◽  
Well Cement ◽  
Fluid Loss Additive

In order to study the effect of brine environment on the performance of oil well cement fluid loss additive (FLA) sodium p-styrene sulfonate/N-methylol acrylamide/itaconic acid (SSS/HAM/IA), the water loss of three different cement slurry systems added with different FLA additions (fresh water cement slurry, semi-saturated brine cement slurry and saturated brine cement slurry) were tested at 90°C and 150°C. The results show that SSS/HAM/IA has good salt tolerance. The water loss of three cement slurry systems was controlled within 100mL with FLA addition adjusted in the range of 1%~3% below 150 °C. The salt tolerance mechanism of SSS/HAM/IA was analyzed based on the microstructure of the three system terpolymer solutions characterized under environmental scanning electron microscopy (ESEM).

scholarly journals A Novel Terpolymer as Fluid Loss Additive for Oil Well Cement

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Ming Li ◽  
Dongbo Xie ◽  
Zihan Guo ◽  
Ya Lu ◽  
Xiaoyang Guo
Keyword(s):  
Molecular Weight ◽  
Gel Permeation Chromatography ◽  
Fluid Loss ◽  
Oil Well ◽  
Gravimetric Analysis ◽  
Cement Slurry ◽  
Free Radical Copolymerization ◽  
Oil Well Cement ◽  
Well Cement ◽  
Fluid Loss Additive

A terpolymer comprised of sodium styrene sulfonate (SSS), fumaric acid (FA), and acrylamide (AM) was synthesized by aqueous free radical copolymerization and evaluated as fluid loss additive for oil well cement. The chemical structure and performance of the terpolymer were characterized by Fourier transform infrared (FTIR) spectroscopy and thermal gravimetric analysis (TGA); the molecular weight and its distribution were determined by gel permeation chromatography (GPC). The optimum reaction conditions of polymerization were obtained: a reaction temperature of 50°C, a mass ratio of SSS/FA/AM 4 : 2 : 14, initiator 0.1%, and reaction time of 4 h; characterization indicated that the SSS/FA/AM had a certain molecular weight and excellent temperature-resistant and salt-resistant properties. The results show that SSS/FA/AM has a good fluid loss performance, in which the API fluid loss of the oil cement slurry could be controlled within 100 mL at 160°C. In addition, it had little effect on the cement compressive strength. The results of scanning electron microscopy (SEM) of the filter cake showed that SSS/FA/AM could be adsorbed on the surface of the cement particles and produce a hydrated layer to prevent fluid loss from the oil well cement.

Research of Nanosilica Particles Grafted with Functional Polymer Used as Fluid Loss Additive for Cementing under Ultra-High Temperature

2016 ◽  
Vol 847 ◽  
pp. 497-504
Author(s):  
Xiu Jian Xia ◽  
Jin Tang Guo ◽  
Shuo Qiong Liu ◽  
Jian Zhou Jin ◽  
Yong Jin Yu ◽  
...  
Keyword(s):  
High Temperature ◽  
Salt Tolerance ◽  
Thermal Resistance ◽  
Fluid Loss ◽  
Cement Slurry ◽  
Silica Nanocomposite ◽  
Nanosilica Particles ◽  
Loss Control ◽  
Fluid Loss Additive ◽  
Ultra High Temperature

On account of that the domestic polymer fluid loss additive exists some severe problems, such as, inferior thermal resistance, poor salt tolerance, strong shear-and thermal thinning behavior, a novel polymer/silica nanocomposite PADMO-V@NS is used as ultra-high temperature fluid loss control additive for cementing. In the present study PADMO-V@NS was prepared through an in situ free radical copolymerization of 2-acrylamico-2-methylpropane sulfonic acid (AMPS), N,N-dimethylacryl amide (DMAM), maleic anhydride (MA), octadecyl dimethylallyl ammonium chloride (ODAAC) and triethoxyvinylsilane (VTS) modified nanosilica. The linear hydrophobic associated copolymer was regarded as the shell and the modified nanosilica as the core. The microstructure, compositions and thermal resistance of PADMO-V@NS were investigated through FTIR and TGA techniques. The results showed that the copolymer modified with nanosilica particles possessed more excellent thermal stability than that of PADMO, and the most rapid decomposing temperature of PADMO-V@NS was highly up to 396.9°C. The application performance of PADMO-V@NS in cement slurry exhibited that it had excellent fluid loss control capacity, good high temperature resistance, strong salt tolerance and mild shear-/ thermal thinning performance, and could be used in 220°C and saturated brine circumstances. Moreover, comparing to PADMO, the compressive strength of set cement containing the copolymer increased over 20 % at 80°C, atmosphere pressure and curing time of 1 day due to the reaction of residual silanol groups with Ca (OH)2. The laboratory research results indicated that the multi-functional fluid loss additive composed of hydrophobic associated polymer/silica nanocomposite had bestowed on the cement slurry systems good comprehensive properties, and may have extensive applications in deep & ultra-deep oil/gas wells cementing.

Working mechanism of poly(vinyl alcohol) cement fluid loss additive

2010 ◽  
Vol 117 (4) ◽  
pp. 2290-2298 ◽  
Author(s):  
Johann Plank ◽  
Fatima Dugonjić-Bilić ◽  
Nils Recalde Lummer ◽  
Salami Taye
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Fluid Loss ◽  
Working Mechanism ◽  
Fluid Loss Additive

Synthesis and working mechanism of fluid loss additive by freeze-drying method

2020 ◽  
Vol 59 (13) ◽  
pp. 1417-1428
Author(s):  
Yang Xu ◽  
Yongjin Yu ◽  
Ming Liu ◽  
Pengpeng Li ◽  
Jintang Guo
Keyword(s):  
Freeze Drying ◽  
Fluid Loss ◽  
Drying Method ◽  
Working Mechanism ◽  
Fluid Loss Additive

scholarly journals Development of mathematical models to control the technological properties of cement slurries

2020 ◽  
Vol 242 ◽  
pp. 179
Author(s):  
Sergei CHERNYSHOV ◽  
Vladislav GALKIN ◽  
Zoya ULYANOVA ◽  
David Macdonald
Keyword(s):  
Hydraulic Fracturing ◽  
Mathematical Models ◽  
Oil And Gas ◽  
Hydroxyethyl Cellulose ◽  
Fluid Loss ◽  
Actual Process ◽  
Technological Properties ◽  
Cement Slurry ◽  
Perm Region ◽  
Fluid Loss Additive

Oil and gas producing enterprises are making increasingly high demands on well casing quality, including the actual process of injection and displacement of cement slurry, taking into account requirements for the annular cement level, eliminating possible hydraulic fracturing, with developing a hydraulic cementing program. It is necessary to prevent deep invasion of cement slurry filtrate into the formation to exclude bridging of productive layers. It is impossible to fulfill all these requirements at the same time without application of modifying additives; complex cement compositions are being developed and applied more often. Furthermore, need to adjust cement slurries recipes appears for almost every particular well. In order to select and justify cement slurries recipes and their prompt adjustment, taking into account requirements of well construction project, as well as geological and technical conditions for cementing casing strings, mathematical models of the main technological properties of cement slurries for cementing production casing strings in the Perm Region were developed. Analysis of the effect of polycarboxylic plasticizer (Pl) and a filtration reducer (fluid loss additive) based on hydroxyethyl cellulose (FR) on plastic viscosity (V), spreadability (S) and filtration (F) of cement slurries is conducted. Development of mathematical models is performed according to more than 90 measurements.

scholarly journals Experimental Investigation on The Effect of PolyVinyl Alcohol on Cement Fluid Loss in Oil Wells

2020 ◽  
Vol 5 (1) ◽  
pp. 128-136
Author(s):  
Mohammed Jamal Awl ◽  
Atta Sheakh Karim Abdulla ◽  
Nabil Adil Tayeb
Keyword(s):  
Experimental Investigation ◽  
Polyvinyl Alcohol ◽  
Filtration Rate ◽  
Oil Industry ◽  
Oil Wells ◽  
Fluid Loss ◽  
Filtration Property ◽  
Cement Slurry ◽  
Fluid Loss Additive

This study presents the effect of PolyVinyl Alcohol Cement Fluid Loss Additive (PVA FLAC) on the API Filtration property of a cement slurry. In Cementing operations of oil wells, different type of fluid loss agents and chemicals are used based on the condition of the wells. PVA FLAC recently introduced in Kurdistan oil industry as loss agent additive to reduce the API Filtration Rate and fluid loss of the cement slurry. Four cementing formulations with different concentration of PVA FLAC additive prepared and their API filtration rates are measured. The results showed that when adding 1.94 gm, 2.91 gm and 3.88 gm of PVA FLAC additive to the cement slurry, the API Filtration Rate reduced by %17, %29 and %42, respectively. The new concentration significantly reduced the rate of filtration when compared to using only 0.97 gm of PVA FLAC additive.

Orthogonal Test Design for Optimization of Dispersive Type Cement Slurry Fluid Loss Control Additive Used in Petroleum Drilling

2011 ◽  
Vol 361-363 ◽  
pp. 487-492
Author(s):  
Sheng Lai Guo ◽  
Yu Huan Bu
Keyword(s):  
Ph Value ◽  
Orthogonal Experiment ◽  
Monomer Concentration ◽  
Ammonium Persulfate ◽  
Fluid Loss ◽  
Oil Well ◽  
Cement Slurry ◽  
Orthogonal Test Design ◽  
Total Monomer Concentration ◽  
Loss Control

The fluid loss control additive plays a key role in reducing reservoir damage and improving the cementing quality of an oil well. Aiming at good fluid loss control ability and excellent dispersibility, a new dispersive type fluid loss control additive was synthesized through orthogonal experiment with 2-acrylamido-2- methyl propane sulfonic acid, acrylamide, N, N-dimethylacrylamide and maleic anhydride. The orthogonal experiment result shows that the influence on the properties of FLCA decreases in the order: PH value > monomer concentration > monomer mole ratio > initiator concentration > temperature. The result indicates that the optimal conditions for FLCA were 4/2.5/2.5/1 of mole ratio of AMPS/AM /NNDMA/MA, 32.5% total monomer concentration in deionized water, 1.0% (by weight of monomer) ammonium persulfate/sodium bisulfite, 4 of PH value, 40°Cof temperature. The synthesized copolymer was identified by FTIR analysis. The results show the dispersive type fluid loss control additive has excellent dispersibility, fluid loss control ability, thermal resistant and salt tolerant ability. As the temperature increases, the thickening time of the slurry containing the synthesized additive reduces. The copolymer is expected to be a good fluid loss control additive.

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