Development of new inhibitor to prevent salt deposition

2021 ◽  
pp. 33-37
Author(s):  
F.M. Ahmadov ◽  
Keyword(s):  
Produced Water ◽  
Water Solution ◽  
Calcium Sulphate ◽  
Mineral Waters ◽  
Oil Fields ◽  
Carbonate Water ◽  
Protection Effect ◽  
Salt Deposition ◽  
Inorganic Mineral ◽  
Sulphate Water

The inhibitors of inorganic mineral sediments based on orthophosphate acid, monoamid of sulphuric acid (MSA) and carboxymethylcelluloze (CMC) have been developed. Created compositional inhibitors of salt deposition are transparent, fluid water solution with 14.5–22.0 % concentration. To specify the efficiency of developed salt deposition inhibitors, the agent capacity to keep cations of calcium in the volume of artificially prepared mineral waters of carbonate and sulphate types modelling produced water within oil fields has been evaluated. It was defined that adding 20–20 mg/l of developed compositions into the solutions of calcium sulphate provides high protection effect. Inhibitors’ protection capacity using the compositions in the charge of 20 mg/l in sulphate water comprises 89.6–96.8 %, and in the carbonate water - 87.8–92.6 %. Using 25 mg/l of these compositions, protection capacity of the inhibitors in sulphate water reaches up to 94.5–98.7 %, and in carbonate water - 92.5–96.8 %. Protection effect of inhibitors in case of using 30 mg/l of the compositions comprises 98.3–100 % in sulphate water, and 96.8–100 % in carbonated one as well.

Mechanism of Protective Action of Inhibitors Based on Quaternary Ammonium Compounds

2021 ◽  
Vol 316 ◽  
pp. 880-884
Author(s):  
A.S. Tyusenkov ◽  
O.A. Nasibullina
Keyword(s):  
Quaternary Ammonium ◽  
Produced Water ◽  
Water Solution ◽  
Protective Action ◽  
Quaternary Ammonium Compounds ◽  
Oil Field ◽  
Oil Fields ◽  
Practical Application ◽  
Field Equipment ◽  
Ammonium Compounds

Currently, inhibitory protection is one of the most effective and common methods of protecting the inner surface of oil field equipment from corrosion. The work explores the mechanism of protective action of new inhibitors based on quaternary ammonium compounds and assesses feasibility of their practical application in oil fields of OJSC Surgutneftegas. Studies were conducted on samples made of pipe steels A 568M, A 516-55 and 13CrV (rus 13ХФА) in a model produced water solution. Three corrosion inhibitors were tested. Parameters of the mechanism of protective action of reagents were determined by potentiodynamic analysis.

Managing Sulphate Reducing Bacteria (SRB) Problem Associated With Produced Water In One Of The Oil Fields Of Oil India Limited (Oil) - A Case Study

2010 ◽  
Author(s):  
Mool Chand Nihalani ◽  
S. Verma ◽  
J. Kumar ◽  
H. Dubey ◽  
Nripendra Kumar Bharali ◽  
...  
Keyword(s):  
Produced Water ◽  
Oil Fields ◽  
Sulphate Reducing Bacteria ◽  
Reducing Bacteria

Corrosion Protection of Nano-Silica Powder Coatingon Artificial Seawater

2021 ◽  
Vol 904 ◽  
pp. 519-524
Author(s):  
Gui Yun Zhang ◽  
Yong Wang ◽  
Tian Wei Zhang ◽  
Chen Yu Zhao
Keyword(s):  
Corrosion Protection ◽  
Corrosion Behavior ◽  
Sea Water ◽  
Electrochemical Impedance ◽  
Water Solution ◽  
Electrochemical Corrosion ◽  
Artificial Seawater ◽  
Protection Effect ◽  
Aluminum Sheets ◽  
Electrochemical Corrosion Behavior

Sea water resources are extensive and can be used to extinguish fires, but their corrosiveness is a major problem. Using the method of electrochemical workstation, the electrochemical corrosion behavior of aluminum sheet in artificial sea water solution and silica-coated artificial seawater was studied; by analyzing the surface morphology, polarization curve and electrochemical impedance spectroscopy, the electrochemical corrosion behavior of aluminum sheets under different immersion times and different immersion media is obtained. The conclusion is that the coating of nanosilica powder has a certain corrosion protection effect on artificial seawater.

Prevention of salt deposition in corrosive medium of produced water in oil-gas production

2021 ◽  
pp. 48-52
Author(s):  
F.G. Hasanov ◽  
◽  
A.M. Samedov ◽  
S.B. Bairamov ◽  
◽  
...  
Keyword(s):  
Closed System ◽  
Produced Water ◽  
Gas Production ◽  
Technological Equipment ◽  
Injection Wells ◽  
Salt Deposition ◽  
Water Salt ◽  
Salt Deposits ◽  
Experimental Researches ◽  
Oil Gas

Produced water isolated from the oil in oil-gas production is pumped into the injection wells after cleaning from salt deposits and mechanical impurities. In the mixture of high-mineralised produced water, salt deposits making the technological equipment and pipes useless while gathering and transportation, reduce the permeability of injection wells. Carried out experimental researches show that for each ton it is necessary to pump 100 g of KD-7 inhibitor to prevent salt deposition in the mixture of produced water. Technological processes should be performed in a closed system, and the territories contaminated with oil and produced water cleaned and equipped well.

scholarly journals Treatment of produced water from Niger Delta oil fields using simultaneous mixture of local materials

2020 ◽  
Author(s):  
S. G. Udeagbara ◽  
S. O. Isehunwa ◽  
N. U. Okereke ◽  
I. U. Oguamah
Keyword(s):  
Heavy Metals ◽  
Niger Delta ◽  
Produced Water ◽  
Palm Kernel ◽  
Oil Fields ◽  
Distilled Water ◽  
Treatment Techniques ◽  
Group A ◽  
C 30 ◽  
Group B

Abstract Produced water (PW) from petroleum reservoirs often contains heavy metals and other contaminants that are harmful to the environment. Most of the commonly used treatment techniques have been reported to be ineffective in reducing some of the contaminants’ concentrations to recommended disposal levels. This study evaluated the effectiveness of four selected bio-adsorbents combined for treating PW from Niger Delta oil fields. In this study, orange peels (I), banana peels (II), sponge gourd (Luffa cylindrica) (III) and palm kernel fibers (IV) were washed with distilled water, sun-dried (24 h) and dried in the oven at 105 ± 5 °C (3 h, I and II), 150 °C (30 min, III) and 80 °C (3 h, IV). They were ground into powder, sieved (150 μ, Group A) and (300 μ, Group B), washed with 0.4 mol/L HNO3, filtered and rinsed with distilled water. Samples of PW were obtained from fields R, X, and Y in the Niger Delta and analysed for heavy metals using an atomic absorption spectrophotometer (AAS). Samples were treated in adsorption column over 6 h using the adsorbents simultaneously. Treated samples were analysed with AAS and characterised. Adsorption of heavy metals were assessed using Langmuir and Freundlich models. Data were analysed using regression and other statistical methods. For the 150 μ size of sample R, the percentage reductions for the metal concentrations (Pb, Ni, Cd, Cu, Fe, Mg, Cr, Zn, Mn, Ca, Ar, B, Sn and Ba) were found to be 100%, 52.7%, 100%, 100%, 85.87%, 19.48%, 100%, 92.8%, 17.74%, 98.86%, 22.32%, 29.56%, 78.06% and 44.74%, respectively, while the reduction in 300 μ size were 1.52%, 97.2%, 71.4%, 17.1%, 43.8%, 45.6%, 7.04%, 89.6%, 35.4%, 99.6%, 0.0001%, 1.19%, 14.19% and 0.002%, respectively. The finer adsorbents were more effective. Similar results were obtained for PW samples from the other fields. Produced water from Niger Delta oil fields was effectively treated of contaminants using four selected bio-adsorbents mixed simultaneously.

Research of Water Quality in Typical Low Permeability Oilfield Produced Water Treatment

2014 ◽  
Vol 556-562 ◽  
pp. 867-871
Author(s):  
Qiu Shi Zhao
Keyword(s):  
Water Quality ◽  
Oil Recovery ◽  
Treatment Process ◽  
Produced Water ◽  
Sewage Treatment ◽  
Oil Fields ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oilfield Produced Water ◽  
Oil Water

It is significative to study sewage treatment process in low permeable oil fields. It could enhance the oil recovery. The water quality characteristics and oil/water separation characteristics were researched during different period process by GC-MS. It shows that there are about 108 kinds of organic matters, including 45 kinds of aliphatic hydrocarbon, 7 kinds of aine, 5 kinds of sulfocompound and 9 kinds of hexacyclic compounds, such as Benzene, phenol, naphthalene and anthracene. The percent of oil droplets which size was less than 10μm is 57.3%, compared to 91.6% which size was more than 50μm. It is difficult to separate the water and oil. The remaining oil was emulsified oil. The process was hard to decrease COD, and some pollutants were existed in water, such as Arsenic, Selenium, Mercury ,Cadmium and Cr6+. It is further proposed to optimize and develop this process to removal oil and suspended solids.

Investigation of the Calcium Sulphate-Water System by Infrared Spectroscopy

Nature ◽  
1968 ◽  
Vol 219 (5149) ◽  
pp. 60-61 ◽  
Author(s):  
JOHN BENSTED ◽  
SATYA PRAKASH
Keyword(s):  
Infrared Spectroscopy ◽  
Water System ◽  
Calcium Sulphate ◽  
Sulphate Water

Opportunities For Re-Use Of Produced Water Around Desert Oil Fields

2004 ◽  
Author(s):  
A.C. Sluijterman ◽  
Y. Al-Lawati ◽  
S. Al-Asmi ◽  
P.H.J. Verbeek ◽  
M.A.S. Schaapveld ◽  
...  
Keyword(s):  
Produced Water ◽  
Oil Fields

scholarly journals DEVELOPMENT OF THE TECHNIQUE OF OPERATION OF GEOTHERMAL SYSTEMS WHEN EXTRACTING ASSOCIATED GASES

2019 ◽  
Vol 45 (3) ◽  
pp. 29-38
Author(s):  
G. Ya. Akhmedov ◽  
A. S. Kurbanismailova
Keyword(s):  
Waste Water ◽  
Carbon Dioxide ◽  
Geothermal Energy ◽  
Water Solution ◽  
Energy Systems ◽  
Hot Water ◽  
Geothermal Water ◽  
Mineral Waters ◽  
Geothermal Systems ◽  
North Caucasus

Objectives. The aim of the study is to develop a method of operating geothermal energy systems in the mode without scaling when disposing of flammable gases with geothermal water in wells with a low gas factor.Method. The studies were conducted on the basis of analyzing the content of associated flammable gases in the underground thermal mineral waters of the North Caucasus and Ciscaucasian deposits and assessing the possibility of their utilization and use for heating and hot water supply. In this case, the laws of dissolution and desorption of methane and carbon dioxide from groundwater solutions with the content of scale-forming components, in particular, calcium carbonate, are used.Result. On the basis of the conducted research, it was found that the operation of g eothermal systems in the power industry should be carried out after preliminary withdrawal of the maximum possible amount of associated flammable gases from a water solution, while maintaining the content of carbon dioxide in water at a level above the equilibrium value. The scheme of the effective operation of thermal distribution stations with the prevention of carbonate deposits in them is given by using the products of associated gas combustion in the waste water when it is pumped back into the aquifer.Conclusion. As a result of the research conducted, a method of operating geothermal energy systems in a non-salt-scale mode has been developed for utilization of combustible gases associated with geothermal water. It has been established that in order to accelerate the dissolution of carbon dioxide in water to stabilize it before entering heat-exchange equipment, it is advisable to increase the partial pressure of carbon dioxide to values exceeding by an order of magnitude the equilibrium at a given temperature. At the same time, before pumping waste water back into the aquifer, excess carbon dioxide is removed from the water.

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