Scale-Inhibitor Consumption in Long-Term Static Barium Sulfate Inhibition Efficiency Tests

2013 ◽  
Vol 28 (04) ◽  
pp. 376-386 ◽  
Author(s):  
Scott S. Shaw ◽  
Ken S. Sorbie
Keyword(s):  
Barium Sulfate ◽  
Inhibition Efficiency ◽  
Scale Inhibitor

Scale inhibitors with a hyper-branched structure: preparation, characterization and scale inhibition mechanism

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 92943-92952 ◽  
Author(s):  
Henghui Huang ◽  
Qi Yao ◽  
Hualin Chen ◽  
Bailing Liu
Keyword(s):  
Inhibition Efficiency ◽  
Water Bodies ◽  
Inhibition Mechanism ◽  
Industrial Water ◽  
Scale Inhibitor ◽  
Phosphorus Pollution ◽  
Scale Inhibition ◽  
New Type ◽  
Branched Structure

In order to improve the scale inhibition efficiency of existing scale inhibitors for industrial water and to reduce the phosphorus pollution of water bodies, a new type of scale inhibitor with a hyper-branched structure has been developed.

Formation and Mitigation of BaSO4 Scale in Oil Fields

2015 ◽  
Vol 814 ◽  
pp. 278-285
Author(s):  
Ming Zhu ◽  
Cheng Qiang Ren ◽  
Yuan Yuan Meng ◽  
Li Liu ◽  
Yun Ping Zheng
Keyword(s):  
Inhibition Efficiency ◽  
Oil Fields ◽  
Scale Inhibitor ◽  
Conductivity Method ◽  
Environment Friendly ◽  
Scale Inhibition ◽  
Negative Role ◽  
Corrosion Inhibition Efficiency ◽  
Effects Of Temperature ◽  
Inhibition Performance

The deposition of BaSO4scale is always found in the oilfield. It is difficult to be removed. Therefore, it plays a negative role to the production. The effects of temperature and water chemistry on BaSO4scale have been investigated by using the conductivity method in this work. An environment-friendly copolymer was prepared to control the scaling of BaSO4. The copolymer was proved by static scale inhibition method, and weight-loss test that it has excellent scale inhibition performance and corrosion inhibition efficiency. Furthermore, FTIR spectra was used to prove that the scale inhibitor was polyepoxysuccinic acid (PESA).

Experimental Study of the Effect of Injection Different Kinds of Water on Extra Low Permeability Reservoir

2014 ◽  
Vol 968 ◽  
pp. 206-210
Author(s):  
Tao Ping Chen ◽  
Xian Xi Su
Keyword(s):  
Experimental Study ◽  
Injection Pressure ◽  
Low Permeability ◽  
Clean Water ◽  
Scale Inhibitor ◽  
Low Permeability Reservoir ◽  
Treated Sewage ◽  
Injection Water ◽  
Ultra Filtration

The experiment study effect of injection different kinds of water on extra low permeability reservoir of Yushulin Oilfield. In the condition of actual temperature and pressure of the reservoir, through the experimental study the effect of injection different kinds of water on extra low permeability core. Experiments include injecting clean water, injecting clean water with scale inhibitor, injecting traditional treated sewage, injecting deep treated sewage, injecting deep treated sewage with scale inhibitor. The experimental results show that: Long term injecting clean water and clean water with scale inhibitor are harmless to core; Injecting traditional treated sewage, high content of oil and impurity bring injection pressure go up, the permeability of core down sharply; Injecting deep treated (aeration + flotation (PAC+PAM) + filtration + ultra filtration (FeCl3)) sewage must be added scale inhibitor, otherwise injection pressure continuously increase, permeability of the core continuously decrease, which seriously affect injection water.

Preparation, Characterization, and Inhibition Efficiency of Quadripolymer for Use as Scale Inhibitor

2012 ◽  
Vol 17 (5) ◽  
pp. 321-332 ◽  
Author(s):  
Xiaoxian Gu ◽  
Fengxian Qiu ◽  
Xin Zhou ◽  
Jing Qi ◽  
Yang Zhou ◽  
...  
Keyword(s):  
Inhibition Efficiency ◽  
Scale Inhibitor

Synthesis and characterization of an ionic liquid–carboxylic acid copolymer scale inhibitor and its scale inhibition performance

2019 ◽  
Vol 19 (5) ◽  
pp. 1463-1472 ◽  
Author(s):  
Wenlin Zhang ◽  
Gongwei Li ◽  
Fei Jin ◽  
Yu Huo ◽  
Tengfei Sun ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Ionic Liquid ◽  
Carboxylic Acid ◽  
Magnetic Resonance ◽  
Acrylic Acid ◽  
Inhibition Efficiency ◽  
Hydrogen Sulfate ◽  
Scale Inhibitor ◽  
Acid Copolymer ◽  
Scale Inhibition

Abstract A phosphorus-free scale inhibitor (ionic liquid–carboxylic acid copolymer) was successfully synthesized by the reaction of 1-sulfobutyl-3-vinylimidazolium hydrogen sulfate (SVIS) and acrylic acid (AA). The structure of the product was characterized by Fourier transform infrared spectroscopy (FTIR), hydrogen nuclear magnetic resonance (1H NMR) and carbon-13 nuclear magnetic resonance (13C NMR). Then the scale inhibition efficiency of 1-sulfobutyl-3-vinylimidazolium hydrogen sulfate-acrylic acid (SVIS-AA) copolymer against CaCO3 and CaSO4 was determined. The results indicated that SVIS-AA copolymer showed better scale inhibition efficiency than poly (acrylic acid) (PAA). After that, the effects of temperature and Ca2+ concentration on the scale inhibition efficiency against CaCO3 were studied. Results showed that when the temperature reached 90 °C, the scale inhibition efficiency could still remain 91% at a concentration of 18 mg L−1. When the concentration of Ca2+ reached 1,200 mg L−1, the scale inhibition efficiency could remain 70% at a concentration of 20 mg L−1. At last, the effect of SVIS-AA copolymer on the morphologies of CaCO3 and CaSO4 scale was studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD).

Test Method Development and Scale Inhibitor Evaluations for High-Salinity Brines in the Williston Basin

2014 ◽  
Author(s):  
Haiping Lu ◽  
Chris Haugen ◽  
Tim Garza ◽  
Jeffrey Russek ◽  
Baker Hughes ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Barium Sulfate ◽  
Calcium Sulfate ◽  
Method Development ◽  
High Salinity ◽  
The United States ◽  
Test Method ◽  
Williston Basin ◽  
Scale Inhibitor ◽  
Strontium Sulfate

Abstract In the Rocky Mountain region of the United States, high-salinity brines (total dissolved solids > 250, 000 mg/L) present during oil and gas production cause severe scale problems in the Williston Basin. The scales include not only calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, but also sodium chloride (halite). This paper presents the development of test methods and their corresponding testing results for scale inhibitor evaluations in the laboratory and their applications in the field for high-salinity brines. It is well known that there is no effective test method for halite scale inhibitor laboratory testing due to the difficulty of controlling the amount of halite precipitation and reproducibility in the test. The evaluation of scale inhibitor performance was conducted by using a tube-blocking test and a static bottle test with synthetic high-salinity brines from the Williston Basin. Two sets of brines were designed, based on the field brine, and were tested with two methods. One set of brine was for halite scale inhibitor evaluation by mixing near-saturated NaCl synthetic brine with a highly concentrated brine of CaCl2·2H2O + NaCl. The second set of brine was designed to evaluate scale inhibitor performance on calcium carbonate, calcium sulfate, barium sulfate, and strontium sulfate by modified brines. Three types of scale inhibitors were used for the performance evaluations, including halite scale inhibitors, general scale inhibitors, and a multifunctional scale inhibitor. The lab test results showed the multifuntinal scale inhibitor exhibited good scale inhibition performance for both sets of scale testing. Successful scale inhibitor implementations in the field applications and case history are also presented in this paper.

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