Synergistic Properties of Phosphonate and Polymeric Scale Inhibitor Blends for Barium Sulphate Scale Inhibition

2014 ◽  
Author(s):  
S.S. Shaw ◽  
K.S. Sorbie
Keyword(s):  
Barium Sulphate ◽  
Scale Inhibitor ◽  
Scale Inhibition

Pre-Production Deployed Scale Inhibition Treatments in Deep-Water, West Africa

2014 ◽  
Author(s):  
D.. Patterson ◽  
W.. Williams ◽  
M.. Jordan ◽  
R.. Douglas
Keyword(s):  
West Africa ◽  
Deep Water ◽  
Best Practice ◽  
Barium Sulphate ◽  
Scale Inhibitor ◽  
Monitoring Methods ◽  
Initial Water ◽  
Scale Inhibition ◽  
Production Wells ◽  
Scale Control

Abstract The injection of seawater into oil-bearing reservoirs in order to maintain reservoir pressure and improve secondary recovery is a well-established, mature operation. Moreover, the degree of risk posed by deposition of mineral scales (carbonate/sulphate) to the injection and production wells during such operations has been much studied. The current deep-water subsea developments offshore West Africa and Brazil have brought into sharp focus the need to manage scale in an effective way. In a deepwater West African field the relatively small number of high-cost, highly productive wells, coupled with a high barium sulphate scaling tendency upon breakthrough of injection seawater meant not only was effective scale management critical to achieve high hydrocarbon recovery, but even wells at low water cuts have proven to be at sufficient risk to require early squeeze application. To provide effective scale control in these wells at low water cuts, phosphonate-based inhibitors were applied as part of the acid perforation wash and overflush stages prior to frac packing operations. The deployment of this inhibitor proved effective in controlling barium sulphate scale formation during initial water production eliminating the need to scale squeeze the wells at low water cuts (<10% BS&W). To increase the volumes of scale inhibitor being deployed in the pre-production treatments and so extend the treatment lifetimes scale inhibitor was also added to the frac gel used to carry the frac sand. This paper outlines the selection methods for the inhibitor chemical for application in frac fluids in terms of rheology, retention/release, formation damage and presents the chemical returns profile from the 5 wells treated (some treatments lasting > 300 days) along with monitoring methods utilized to confirm scale control in the wells treated. Many similar fields are currently being developed in the Campos basin, Gulf of Mexico, and West Africa, and this paper is a good example of best-practice sharing from another oil basin.

Research Progress of Scale Inhibition Mechanism

2014 ◽  
Vol 955-959 ◽  
pp. 2411-2414 ◽  
Author(s):  
Li Xiu Liu ◽  
Ai Jiang He
Keyword(s):  
Metal Surface ◽  
Inorganic Salt ◽  
Simulation Technique ◽  
Research Progress ◽  
Inhibition Mechanism ◽  
Scale Inhibitor ◽  
Scale Inhibition

Scale inhibitor is a medicament which has the properties of dispersing insoluble inorganic salt in water, and preventing or obstructing sediment and scaling of insoluble inorganic salt on metal surface. Research on the mechanism of scale inhibition can promote using and developing scale inhibitors. In this paper, the traditional macroscopic mechanism of scale inhibition was firstly analyzed, and it was also emphasized to introduce the research progress of quantization simulation technique on the mechanism of scale inhibition, and it was also suggested to combine the microstructure of scale crystal with quantization simulation technique to have a further study on the mechanism of scale inhibition.

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 on scale inhibition performance of a green scale inhibitor polyaspartic acid

2008 ◽  
Vol 51 (7) ◽  
pp. 695-699 ◽  
Author(s):  
ZhenHua Quan ◽  
YongChang Chen ◽  
XiuRong Wang ◽  
Cheng Shi ◽  
YunJie Liu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Scale Inhibitor ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Inhibition Performance

Corrosion and Scale Inhibition Properties by Phosphate-free and Nitrogen-free Scale Inhibitor in Cooling Water System

2014 ◽  
Vol 51 (3) ◽  
pp. 248-256 ◽  
Author(s):  
Huchuan Wang ◽  
Yuming Zhou ◽  
Guangqing Liu ◽  
Jingyi Huang ◽  
Qingzhao Yao ◽  
...  
Keyword(s):  
Water System ◽  
Cooling Water ◽  
Scale Inhibitor ◽  
Cooling Water System ◽  
Scale Inhibition

The Scaling Preventable Measures of Multi-Effect Distillation Plants

2014 ◽  
Vol 955-959 ◽  
pp. 605-609
Author(s):  
Ming Luo ◽  
Shu Zhong Wang ◽  
Jian Ping Yang
Keyword(s):  
Heat Recovery ◽  
Sulfamic Acid ◽  
Scale Inhibitor ◽  
Scale Removal ◽  
Acid Cleaning ◽  
Scale Inhibition ◽  
Liaohe Oilfield ◽  
Removal Technology ◽  
Removal Technologies ◽  
Performance Scale

The multi-effect distillation (MED) process is one of the oldest process in desalination of seawater. This technology has been used for water and heat recovery from the petroleum waste in Liaohe Oilfield. However, the scale formation is one of the main problems that encountered in the operation of different plants. The temperature of the first stage of the MED evaporation is higher than 138 °C. Therefore, both the scale inhibition and removal technologies should be adopted. The Belgard EV 2050 scale inhibitor produced by Ciba-Geigy is recommended to be used to inhibit the scale due to the excellent scale inhibiting performance. Scale removal technology also needs to be adopted regularly for device descaling in addition to the scale controlling technology. The sulfamic acid (concentration of 5% -10%) can be selected as the acid cleaning agent with a certain amount of inhibitor added.

The Optimal Preparation of Scale Inhibitor Polyaspartic Acid

2010 ◽  
Vol 113-116 ◽  
pp. 694-697
Author(s):  
Guo Lin Jing ◽  
Shan Tang ◽  
Shu Lin Li ◽  
Li Jie Xing ◽  
Ling Rong Kong
Keyword(s):  
Maleic Anhydride ◽  
Optimal Condition ◽  
Ammonia Solution ◽  
Scale Inhibitor ◽  
Polyaspartic Acid ◽  
Biodegradation Rate ◽  
Scale Inhibition ◽  
Material Temperature

Polyaspartic acid (PASP) was prepared by the means of polymerizing maleic anhydride and ammonia solution. In order to find optimal condition of synthesizing PASP, we made a set of experiments on proportion of material, temperature and time of polymerization in the single condition, and compared PASP with other scale inhibitors about the performance of scale inhibition and biodegradation. The results show: the optimal proportion of material is 1:1.1, the temperature of polymerization is 160°C, and the time of polymerization is 1h. Under above condition, we synthetized the PASP its inhibiting efficiency can reach over 95%, and biodegradation rate reaches 70%.

Development of a Barium Sulphate Scale Inhibitor for Chalk Solid Loaded Conditions

2019 ◽  
Author(s):  
Erin Temple ◽  
Myles Jordan ◽  
Helen Williams ◽  
Sigrid Kjelstrup ◽  
Marija Kilibarda ◽  
...  
Keyword(s):  
Barium Sulphate ◽  
Scale Inhibitor
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