scholarly journals Risk Mitigation and Mapping on Tubular System During Microbial Huff and Puff Injection Coupled with Lean Six Sigma Approach at Field X

2021 ◽  
Vol 2 (2) ◽  
pp. 38
Author(s):  
Steven Chandra ◽  
Prasandi Abdul Aziz ◽  
Wijoyo Niti Daton ◽  
Muhammad Rizki Amrullah
Keyword(s):  
Corrosion Rate ◽  
Six Sigma ◽  
Chromium Content ◽  
Risk Mitigation ◽  
Lean Six Sigma ◽  
Oil Field ◽  
Microbially Induced Corrosion ◽  
Tubular System ◽  
Fishbone Diagram ◽  
Six Sigma Approach

Increasing demand of oil in Indonesia is in contrast with the decreasing oil production every year. Enhanced oil recovery (EOR) has become one of the most favorable method in maximizing the production of mature fields with various applications and research has been done on each type, especially microbial EOR (MEOR). “X” field is a mature oil field located in South Sumatra that has been actively producing for more than 80 years and currently implementing MEOR using huff and puff injection. However, there are some potential risks regarding MEOR processes that may inhibit the production by damaging the well’s tubular system, particularly microbially induced corrosion (MIC). This study reviews the risk mitigation and mapping to prevent corrosion on tubular system during MEOR huff and puff processes, equipped with the approach of Lean Six Sigma.The mitigation and mapping process follow the framework of define, measure, analyze, improve, and control (DMAIC). It starts with defining the problem using supplier-input-process-output-customer (SIPOC) diagram after all the field data necessary has already been collected, then measuring the corrosion rate model using ECE™ software as well as conducting sensitivity analysis of the fluid rates. The analyze phase involves constructing fishbone diagram to identify the root causes, comparison with industry’s specification and standard, and analysis of chromium effect on corrosion rates. Further simulation is conducted to support the analysis and to ensure the improvements and sustainability of the design selection.Based on the simulation results, the normal corrosion rate ranging from 0.0348 – 0.039 mm/year and the pH is around 4.03 – 5.25, while the ±30% fluid rate sensitivity results shown that the change of water flowrate is more sensitive than oil flowrate with the corrosion rate approximately 0.0275 – 0.048 mm/year. The fishbone diagram identifies that material selection and environmental condition as the main root causes, then corrosion resistant alloy (CRA) is used in the tubing string to prevent corrosion in the future by using super 13Cr martensitic steel (modified 2Ni-5Mo-13Cr) as the most suitable material. Further simulation on chromium content supports the selection that corrosion rate can be reduced by adding the chromium content in the steel. The completion design is then capped with choosing the Aflas® 100S/100H fluoro-elastomer as the optimum material for packer and sealing. Overall, the Lean Six Sigma approach has been successfully applied to help the analysis in this study.

Determination of linagliptin and empagliflozin by UPLC and HPTLC techniques aided by Lean Six Sigma approach

2021 ◽  
Author(s):  
Ebrahim A. El‐Desouky ◽  
Ahmed M. Abdel‐Raoof ◽  
Ashraf Abdel‐Fattah ◽  
Ahmed Abdel‐Zaher ◽  
Ayman O. E. Osman ◽  
...  
Keyword(s):  
Six Sigma ◽  
Lean Six Sigma ◽  
Six Sigma Approach

scholarly journals Six Sigma Approach to Enhance Concurrency of the Procurement Process for Raw Materials

2021 ◽  
Vol 15 (4) ◽  
pp. 510-517
Author(s):  
Atanas Kochov ◽  
Aleksandar Argilovski
Keyword(s):  
Six Sigma ◽  
Raw Materials ◽  
Lean Six Sigma ◽  
Approval Process ◽  
Procurement Process ◽  
Manufacturing Company ◽  
External Vendors ◽  
Short Time ◽  
Six Sigma Approach ◽  
Structured Approach

This paper presents the improvement of the procurement process for raw materials in a real manufacturing company supported by the Lean Sig Sigma as structured approach to deliver the improvement. The manufacturing company that is a subject of this paper have received a significant amount of complains regarding the internal purchase orders approval process and the overall procurement process of the company from both internal employees and external vendors and contractors. Considering that the company is procuring the raw goods from selected vendors, therefore the entire manufacturing plan depends on these materials, the company decided to improve this process trough Lean Six Sigma. The Lean Six Sigma approach was selected in order to obtain the improvement in a short time, based on indicators that were previously analyzed and prioritized. The paper focuses on simplifying of the process trough decreasing the number of mandatory steps.

scholarly journals Commercial Banks Versus BPR: Advantages Based On Perception, Hope And Customer Interest

2017 ◽  
Vol 1 (2) ◽  
pp. 102-112
Author(s):  
Hesti Budiwati
Keyword(s):  
Competitive Advantage ◽  
Six Sigma ◽  
Commercial Banks ◽  
Public Trust ◽  
Lean Six Sigma ◽  
Point Of View ◽  
Competitive Advantages ◽  
Public Funds ◽  
Different Types ◽  
Six Sigma Approach

Commercial banks and Bank Perkreditan Rakyat are two different types of banks whose existence in society aims to raise and channel public funds to improve people's lives. The facts show that there is a sharp competition between the two types of banks in terms of gaining public trust to become bank customer but although these two types of banks are different but still able to develop well in society. This study aims to identify the factors that become competitive advantage at Commercial Banks and Bank Perkreditan Rakyat from the customer's point of view based on customers' perceptions, expectations and interests so banks can determine competitive strategy. The approach used in this research is Lean Six Sigma approach with a sample of 60 respondents consisting of 30 customers of Commercial Banks and 30 customers of Bank Perkreditan Rakyat. Respondents will be asked to respond to research instruments based on their perceptions, expectations and interests. The results of the study there are five competitive advantages in Commercial Banks (1) promotions made, (2) reward appeal, (3) saving security, (4) cleanliness and comfort of the room, (5) friendliness, courtesy and neatness. Bank Perkreditan Rakyat obtained competitive advantage that is (1) cleanliness and comfort of the room,(2) ability and alertness of the officers, (3) friendliness, courtesy and neatness, (4) saving security, (5) familiarity  of the officer with the customer. In addition there are similarities there are interesting differences that is on the excellence of promotional activities and the attractiveness of prizes at Commercial Banks. and the familiarity of officers with customers at Bank Perkreditan Rakyat.

Micro and Nano R&D Fab Performance and Productivity A Lean Six-Sigma Approach

2019 ◽  
Vol 16 (40) ◽  
pp. 35-46
Author(s):  
Ronald J. Olson ◽  
William Hawkins ◽  
Patricia Piacente ◽  
Ronald Frank ◽  
John Deluca ◽  
...  
Keyword(s):  
Six Sigma ◽  
Lean Six Sigma ◽  
Six Sigma Approach

Enhancement of Pass Percentage through Lean Six Sigma Approach in Degree Level Technical Educational Institutions

2018 ◽  
Vol 39 ◽  
pp. 191-201
Author(s):  
S. Nallusamy ◽  
Gunji Venkata Punna Rao
Keyword(s):  
Six Sigma ◽  
Fish Bone ◽  
Lean Six Sigma ◽  
Educational Institutions ◽  
Technical Institute ◽  
Effect Analysis ◽  
Process Capability Analysis ◽  
Capability Analysis ◽  
Six Sigma Approach ◽  
Degree Level

The objective of this research is to improve the overall result and pass percentage of students in degree level technical institutions by eliminating the failure causes using lean six sigma method. A case study was carried out in a degree level technical institute, which has a total intake of 720 students producing 54% of results for the past five years. Taking as a challenge issues to produce more than 75% of results, it was considered to carry out a study using lean six sigma approach. In this research five stage methodology of six sigma i.e. DMAIC have been used to reduce the parameters that affect the system. Failure mode effect analysis, histogram, process capability analysis and fish bone diagram methodologies were also adopted to analyze the depth of the issue and to identify the critical factors that requires to be controlled and to improve by implementing the solutions and remarks received from the stakeholders. From the results it was found that, through this approach the pass percentage level of the technical institute had increased from 54% to 75% by identifying and reducing the appropriate source of failures.

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