scholarly journals Effect of Produced Sand Particles and Fines on Scale Inhibitor: A Review

2021 ◽  
Vol 5 (3) ◽  
pp. 35
Author(s):  
Uche C. Anyanwu ◽  
Gbenga F. Oluyemi
Keyword(s):  
Oil And Gas ◽  
Fine Particles ◽  
Research Work ◽  
Fine Sand ◽  
Gas Production ◽  
Loose Sand ◽  
Scale Inhibitor ◽  
Oil And Gas Production ◽  
Sand Particles ◽  
Mathematical And Numerical Simulation

Application of scale inhibitors in oil and gas production is aimed at mitigating scale blockage during production. Many experimental, mathematical, and numerical simulation modeling works have been carried out to evaluate behavior, performance, and interaction of the scale inhibitor chemicals within porous media in relation to their efficiency in solving scale problem. However, the mechanisms underpinning scale inhibitors performance are not well published. Some research works have shown theoretically that not all scale inhibitors pumped into the formation adsorb onto the formation rock. Some of the inhibitors may adsorb on produced loose sand grains or colloidal fine sand particles which float and flow within the pore spaces along with the scale inhibitor mostly in unconsolidated reservoirs This paper provides a review of research work on the effect of produced loose sand or colloidal fine particles flow on polyphosphonates and polyphosphinopolymer scale inhibitors performances during crude production.

An Assay Method for the Detection of all Scale Inhibitors at Extremely low Concentration

2014 ◽  
Author(s):  
Ya Liu ◽  
Amy T. Kan ◽  
Chao Yan ◽  
Fei Wang ◽  
Lu Wang ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Concentration Field ◽  
Gas Production ◽  
Assay Method ◽  
Inhibitor Concentration ◽  
Scale Inhibitor ◽  
Oil And Gas Production ◽  
Low Concentration ◽  
Low Concentrations ◽  
Actual Field

Abstract Accurate detection of scale inhibitors has always been vitally important to monitor scale treatment during oil and gas production. However, there remains an ongoing challenge to analyze scale inhibitors at low concentrations, especially with polymeric scale inhibitors. This paper presents an assay method designed to detect all types of scale inhibitors, especially at low concentrations, and an expert program developed to guide the method. The program guides the preparation of a field brine barite solution at a fixed barite super-saturation. Scale inhibitor concentration is then measured via the method of standard additions, assuming a linear relationship between the scale inhibitor concentration and the logarithm of barite induction time. Seven different scale inhibitors, including phosphonates, carboxylates and sulfonates, were detected in two typical synthetic brines at low concentrations. In addition, this assay method has also been applied to scale inhibitor detection in actual field brines. In general, this easily-implemented method can directly detect the residual level of any scale inhibitors in field brine within the range of about 0.3 – 100 mg/L active. Emphasis in this paper is on low concentrations. Measurement of low concentration scale inhibitors not only help to monitor scaling tendency but also effectively prevent overuse of scale inhibitors and thereby protects the environment and saves money. This is the first method that can detect all scale inhibitors at extremely low concentration. Field applications, strengths, and interferences will be discussed using laboratory and field examples.

scholarly journals Effect of Produced Sand Particles and Fines on Scale Inhibitor: A Review

2021 ◽  
Author(s):  
Uche Callistus Anyanwu ◽  
Gbenga F Oluyemi
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Fine Sand ◽  
Gas Production ◽  
Irreversible Adsorption ◽  
Gas Industry ◽  
Oil And Gas Production ◽  
Rock Interaction ◽  
Theoretical Application ◽  
And Migration

Scale inhibitors are deployed as preventive and rejuvenation operation in oil and gas industry when production operations are under threat or menace of scale blockage. The application of scale inhibitors is carried out through a method known as squeezing. In general, the squeeze process is governed by inhibitor-rock interaction which is described by adsorption/desorption isotherm. Most reservoirs produce loose sand grains or fine sand which float and flow within the pore spaces along with the squeezed scale inhibitors. Hypothetical reports have shown that not all scale inhibitors pumped into the formation adsorb onto the formation rock. A number of factors (irreversible adsorption, pH changes, competing ions, concentration and temperature) have been considered to affect the adsorption and return profile of these scale inhibitors. This review work examines the performances of most common scale inhibitors used in the oil and gas production activities, theoretical application in reservoirs and how loose fine sand grains affect the adsorption and desorption characteristics of squeezed scale inhibitors. Additionally, presented were overviews of previous reports on fine sand production and migration of fine sands through formation pores in reservoirs.

scholarly journals Exploratory research for developing advanced pumping and compressor equipment adapted to abnormal operating conditions of oil and gas production

2020 ◽  
Vol 18 (4) ◽  
pp. 467-474
Author(s):  
Sazonov Appolonievich ◽  
Mokhov Albertovich ◽  
Mulenko Valentinovich ◽  
Tumanyan Arturovich ◽  
Frankov Alexandrovich ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Research Work ◽  
Gas Production ◽  
Operating Conditions ◽  
Hydrocarbon Exploration ◽  
Exploratory Research ◽  
Oil And Gas Production ◽  
Ongoing Research ◽  
Abnormal Operating Conditions ◽  
Compressor Equipment

The observed instability of the oil and gas market makes it necessary to intensify the exploratory scientific research for the development of advanced and inexpensive pumping and compressor equipment intended for oil and gas production and treatment. The ongoing research work is being undertaken with a view to modernize well-known technical solutions and develop new scientific principles for gas compression with the use of labyrinth compressors. From the published materials, it became known that when designing labyrinth pumps, the screw auger on the pump rotor can be replaced with a set of vane wheels. This design approach should be transferred from the field of pumping technology to the field of compressor technology as well. At the initial stage of such research microlevel models of new turbocompressors have been developed to test their performance. Further, was made the transition from the low-cost physical experiments with micro-level models to a deeper study of the working process for the basic model of the compressor with the screw rotor. 3D-model development was carried out with the use of the SolidWorks 3D CAD-system. In order to undertake a calculation study, the FloEFD software package of computational fluid dynamics developed by Mentor Graphics Corporation has been used. The results of the research findings can be used for the development of energy-efficient technologies for the compression and pumping of various gases. The development of cheaper and more economical pump-compressor units will allow for the solution of urgent hydrocarbon exploration and production problems in abnormal operating conditions. Based on similar compressor units, there is a possibility to develop other sectors of science and technology as well.

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