Operational Efficiency Gains in the Removal of Calcium Sulfate Scale from Electric Submersible Pumps in Offshore Wells

2020 ◽  
Author(s):  
Enrique Reyes-Garcia ◽  
Kristina Henkel-Holan ◽  
Katya Campos ◽  
Sarai Santos ◽  
Omar Villaseñor ◽  
...  
Keyword(s):  
Calcium Sulfate ◽  
Operational Efficiency ◽  
Efficiency Gains ◽  
Calcium Sulfate Scale

scholarly journals Bank Consolidation, Efficiency, and Profitability in Italy

2017 ◽  
Vol 17 (175) ◽  
Author(s):  
Anke Weber
Keyword(s):  
Banking Sector ◽  
Banking System ◽  
Operational Efficiency ◽  
Policy Options ◽  
Efficiency Gains ◽  
Consolidation Process ◽  
Comprehensive Strategy ◽  
Balance Sheets ◽  
Cross Country ◽  
Bank Balance Sheets

This paper examines the case for efficiency-driven banking sector consolidation in Italy, evaluates its potential effects on profitability, and discusses policy options to facilitate a consolidation process that is as effective as possible. A bottom-up analysis of 386 Italian banks suggests that while profitability is expected to improve as the economy gradually recovers, operational efficiency gains are nonetheless needed to restore large parts of the banking system to healthy profitability. Banking system consolidation can play a role in facilitating such efficiency gains, but its effectiveness is likely to be most as part of a comprehensive strategy that includes complementary reforms to clean up bank balance sheets. Cross-country experience indicates that efficiency gains are more likely to follow consolidations where careful viability analyses are conducted of the synergies and operational improvements that can be achieved.

Evaluation of a New Treatment to Remove Calcium Sulfate Scale: Lab Studies and Field Application.

2019 ◽  
Author(s):  
Ahmed Farid Ibrahim ◽  
Hisham Nasr-El-Din ◽  
Mohamed Abd El-baqi ◽  
Ahmed Abdelhay ◽  
Hossam Farouk ◽  
...  
Keyword(s):  
Calcium Sulfate ◽  
Field Application ◽  
Calcium Sulfate Scale ◽  
New Treatment

scholarly journals Application of a Plant Location Model to an Area's Cotton Ginning Industry

1974 ◽  
Vol 6 (1) ◽  
pp. 151-157
Author(s):  
Stephen Fuller ◽  
Monty Washburn
Keyword(s):  
Operational Efficiency ◽  
Location Model ◽  
Plant Location ◽  
Annual Production ◽  
Seed Cotton ◽  
Efficiency Gains ◽  
Marketing System

The conventional cotton marketing system includes characteristics that impair its efficiency. This paper reports on a study which examined the potential operational efficiency gains in that portion of the system which involved the flow of seed cotton from the field through the ginning process. Up to 70 percent of the annual production is harvested in three to four weeks; the rest is harvested and processed during the remaining 3 1/2 to 4 months of the ginning season.

Effects of Organic Additives on Calcium Sulfate Scaling in Pipes

2009 ◽  
Vol 62 (8) ◽  
pp. 927 ◽  
Author(s):  
Tung A. Hoang ◽  
H. Ming Ang ◽  
Andrew L. Rohl
Keyword(s):  
Pipe Flow ◽  
Calcium Sulfate ◽  
Chemical Structure ◽  
Flow System ◽  
Organic Additives ◽  
Pipe System ◽  
Calcium Sulfate Scale ◽  
First Time ◽  
Over Time ◽  
Comprehensive Study

A comprehensive study of the effects of nine organic additives on the formation of calcium sulfate scale in a pipe system was conducted using a multiple pipe flow system. Several factors that influence the inhibitory capability of phosphonic and carboxylic additives such as their chemical structure, their concentration, and the run time were closely scrutinized. Results showed that the organic additives influence the deposition of calcium sulfate on the walls of a pipe flow system at various levels. The superiority of the phosphonic additives, especially N,N,N′,N′-ethylenediaminetetramethylenephosphonic acid (EDTP) and nitrilotrimethylenephosphonic acid (NTMP), to other organic compounds with respect to scale prevention is discussed thoroughly. For the first time, it was demonstrated that a solution with a given concentration of inhibitor that is continuously refreshed in a pipe reactor becomes less effective over time. The morphology of the scales formed in the presence of different additives is also studied, using scanning electron microscopy.

Case Studies of the Fleet Operational Efficiency Gains through Onboard Intelligence and Managerial Processes

2010 ◽  
Author(s):  
Leopoldo Rideki Yoshioka ◽  
Gustavo Henrique Rocha Santos ◽  
Renato Duarte Costa ◽  
Andre Vas
Keyword(s):  
Case Studies ◽  
Operational Efficiency ◽  
Efficiency Gains

Real-time monitoring of calcium sulfate scale removal from RO desalination membranes using Raman spectroscopy

Desalination ◽  
2021 ◽  
Vol 497 ◽  
pp. 114736
Author(s):  
Danielle J. Park ◽  
Omkar D. Supekar ◽  
Alan R. Greenberg ◽  
Juliet T. Gopinath ◽  
Victor M. Bright
Keyword(s):  
Raman Spectroscopy ◽  
Real Time ◽  
Calcium Sulfate ◽  
Real Time Monitoring ◽  
Scale Removal ◽  
Calcium Sulfate Scale

The Kinetics and Mechanism of Formation of Calcium Sulfate Scale Minerals—The Influence of Inhibitors

CORROSION ◽  
1979 ◽  
Vol 35 (7) ◽  
pp. 304-308 ◽  
Author(s):  
GEORGE H. NANCOLLAS ◽  
WESLEY WHITE ◽  
FELIX TSAI ◽  
LARRY MAS LOW
Keyword(s):  
Calcium Sulfate ◽  
Mechanism Of Formation ◽  
Seeded Growth ◽  
Langmuir Adsorption ◽  
Calcium Sulfate Dihydrate ◽  
Calcium Sulfate Scale ◽  
Rate Of Reaction ◽  
Growth Method ◽  
Kinetics Of ◽  
Calcium Sulfate Hemihydrate

Abstract A seeded growth method has been used to study the kinetics of crystallization of calcium sulfate dihydrate at various temperatures and at ionic strengths up to 0.6M. Under all conditions, the rate of reaction is proportional to the square of the relative supersaturation and is controlled by a surface process. The same kinetics are applicable for the growth of calcium sulfate hemihydrate at temperatures above 110 C. The organic phosphonates effectively retard scale formation, and diethylenetriaminepenta (methylenephosphonic acid), when present at a concentration as low as 10−7M, completely inhibits the growth of calicum sulfate hemihydrate at 120 C. By assuming that the inhibitor molecules are adsorbed on growth sites on the surface of the crystals, the inhibition can be interpreted in terms of a simple Langmuir adsorption isotherm.

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