New Diblock Copolymers as Fluid Loss Additive for High Temperature Cementing

2016 ◽  
Author(s):  
A. Cadix ◽  
J. Wilson ◽  
Ch. Phan ◽  
L. Villafane ◽  
J. -R. Gomez ◽  
...  
Keyword(s):  
High Temperature ◽  
Diblock Copolymers ◽  
Fluid Loss ◽  
Fluid Loss Additive

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.

A Novel Cement Fluid Loss Additive P1402

2014 ◽  
Vol 941-944 ◽  
pp. 1203-1207 ◽  
Author(s):  
Qiang Xiao ◽  
Wen Fa Xiao ◽  
Xin Xin Liu
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
High Temperature ◽  
Reaction Time ◽  
Performance Testing ◽  
Fluid Loss ◽  
Solution Polymerization ◽  
Excellent Thermal Stability ◽  
Aqueous Solution Polymerization ◽  
Fluid Loss Additive

A novel cement fluid loss additive P1402, which synthesized using the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), acrylic acid (AA), N,N dimethyl acrylamide (DMAM) and N-Vinyl-2-pyrrolidone (NVP) by the method of aqueous solution polymerization. The ratio of monomers AMPS:AA:DMAM:NVP at 2:1.5:1:1, reaction PH at 10.8, reaction temperature at 65°Cand reaction time about 5 hours. The IR spectrum of P1402 show that the polymer with the structure of all the monomers .The fluid loss performance testing show that the forpolymers P1402 has an excellent thermal stability. The fluid loss additive P1402 has an excellent tolerance to salt and high temperature.

A New Type of Fluid Loss Additive P1301 for Oil Field Cementing

2014 ◽  
Vol 881-883 ◽  
pp. 131-139
Author(s):  
Qiang Xiao ◽  
Wen Fa Xiao ◽  
Xin Xin Liu ◽  
Li Tao Dong
Keyword(s):  
High Temperature ◽  
Performance Test ◽  
Orthogonal Experiment ◽  
Salt Content ◽  
Performance Testing ◽  
Oil Field ◽  
Optimum Process ◽  
Fluid Loss ◽  
Excellent Thermal Stability ◽  
Fluid Loss Additive

A novel cement fluid loss additive P1301, which can resist high temperature and high salt content, was synthesized using the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), acrylic acid (AA), acrylamide (AM) and n-vinyl-2-pyrrolidone (NVP) by the method of aqueous solution polymerization. Through the orthogonal experiment find the optimum process: the ratio of monomers AMPS: AA: AM: NVP at 4:3:2:1, reaction PH at 11, reaction temperature at 60°C and reaction time about 4 hours. The IR spectrum show that the polymer with the structure of all the monomers. The aging test, thermal performance test and the fluid loss performance testing show that the forpolymers P1301 has an excellent thermal stability that can be used in 240°Cand strong salt tolerance. The fluid loss additive P1301 has an excellent tolerance to salt and high temperature.

Application of a new family of organosilicon quadripolymer as a fluid loss additive for drilling fluid at high temperature

2012 ◽  
Vol 128 (1) ◽  
pp. 28-40 ◽  
Author(s):  
Qi Chu ◽  
Pingya Luo ◽  
Qingfeng Zhao ◽  
Junxiong Feng ◽  
Xubing Kuang ◽  
...  
Keyword(s):  
High Temperature ◽  
Drilling Fluid ◽  
Fluid Loss ◽  
New Family ◽  
Fluid Loss Additive

Preparation of a novel forpolymer as fluid loss additive for high temperature oil well cementing

2014 ◽  
Vol 87 (9) ◽  
pp. 1377-1381 ◽  
Author(s):  
Qiang Xiao ◽  
Pinhua Rao ◽  
Wenfa Xiao ◽  
Xinxin Liu ◽  
Wenqi Zhang
Keyword(s):  
High Temperature ◽  
Fluid Loss ◽  
Oil Well ◽  
Fluid Loss Additive

Rheological Characteristics of Viscoelastic Surfactant Fluid Mixed With Silica Nanoparticles

2013 ◽  
Author(s):  
Yueqiong Wu ◽  
Zhongyang Luo ◽  
Hong Yin ◽  
Tao Wang
Keyword(s):  
High Temperature ◽  
Shear Rate ◽  
Volume Fraction ◽  
Sio2 Nanoparticles ◽  
Fluid Loss ◽  
Rheological Characteristics ◽  
High Shear ◽  
Fracturing Process ◽  
Viscoelastic Surfactant ◽  
Rheological Performance

Since the surfactant can form rod-like micelles or even cross-link structures, viscoelastic surfactant (VES) fluid has unique rheological characteristics. The demerits of VES fluids have been proven after being applied as the fracturing fluid for several years. However, the fluid has high fluid loss and a low viscosity at high temperature, which limits the application to hydraulic fracturing. This paper focuses on the VES fluid mixed with nanoparticles which should be an effective way to maintain the viscosity at high temperature and high shear rate. The experiments were based on preparation of uniform and stable nanocolloids, which utilize Microfluidizer high shear fluid processor. Dynamic light scattering and microscopic methods are employed to investigate the stability and micro-structure of the VES fluid. The effects of temperature, shear rate and volume fraction of the nanoparticles on rheology of VES were studied. The SiO2 nanoparticles could significantly improve the rheological performance of VES fluid, although the rheological performance at the temperature over 90 °C needs to be enhanced. The mechanisms of interactions between nanoparticles and micelles are also discussed later in the paper. At the end, the potential of VES fluid mixed with nanoparticles during application in fracturing process was discussed.

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