Ensuring The Safety Of Onsite Personnel And Neighboring Community During Workover And Well-testing Activities With A High H2S Risk Potential - A Case Study

2014 ◽  
Author(s):  
Andrea Ferrante ◽  
Elie Daher ◽  
Warwick Hughes
Keyword(s):  
Well Testing ◽  
Risk Potential

Production Optimization using Multiphase Well Testing: A Case Study from East Kalimantan, Indonesia

2001 ◽  
Author(s):  
Albertus Retnanto ◽  
Ben Weimer ◽  
I Nyoman Hari Kontha ◽  
Heru Triongko ◽  
Azriz Azim ◽  
...  
Keyword(s):  
Production Optimization ◽  
Well Testing ◽  
East Kalimantan

Methodology for Exploration Well Testing with ESP-DST in Caspian Sea. the Case Study in Unconsolidated Sandstone with Heavy Oil (Russian)

2020 ◽  
Author(s):  
Issatay Dosmukhambetov ◽  
Bakhytzhan Taubayev ◽  
Ualikhan Yesbolov ◽  
Aikhan Sadykov ◽  
Muratbek Shmalin ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Caspian Sea ◽  
Well Testing ◽  
Exploration Well

Field-Proven Well Surveillance Techniques Designed for an Early Well Scaling Diagnosis and Timely Well Performance Reinstatement: Case Study from the Kashagan Field

2021 ◽  
Author(s):  
Aktoty Kauzhanova ◽  
Lyudmila Te ◽  
John Reedy ◽  
Thaddeus Ivbade Ehighebolo ◽  
Mirko Bastiaan Heinerth ◽  
...  
Keyword(s):  
Surveillance Program ◽  
Successful Implementation ◽  
Well Testing ◽  
Well Performance ◽  
Root Cause ◽  
Operating Environments ◽  
Initial Stage ◽  
Calcite Deposition ◽  
Time Required

Abstract Some wells in the Kashagan field did not perform as well as expected. Despite producing virtually no water, calcite deposition was found to be the root cause of the problem. A comprehensive well surveillance program, which was proven to be very efficient for an early scaling diagnosis, was developed by the operator, North Caspian Operating Company (hereafter NCOC). As a result, well scaling is currently well managed and prevented from reoccurring. The objective of this paper is to share an early experience with well scaling in the Kashagan field, as well as to describe the developed set of well surveillance techniques. The aim of the various well surveillance techniques discussed in this paper is to improve an Operator's ability to identify the very first signs of scale accumulation. This, in its turn, enables to introduce timely adjustments to the well operating envelope and to schedule a scale remediation / inhibition treatment with the intention to prevent any potential scaling initiation from further development. The approach is quite extensive and incorporates continuous BHP/BHT monitoring, routine well testing, PTA analysis, and fluid/water sampling. Developed approach experienced multiple revisions and modifications. Further optimization continues, however, the described well surveillance techniques represent the latest Operator's vision on the most efficient way for well scaling monitoring and identification. In the Kashagan field, BHP/BHT readings have proved to be the most direct and instantaneous indication of any early signs of potential deterioration in well performance (qualitative analysis) while well testing and PTAs are considered as the most essential techniques in confirming and quantifying scaling severity (quantitative analysis). It is important to mention that BHT increase is explained by Joule-Thomson heating effect being specific for the Kashagan fluid (happening during increased pressure drawdown). This, in turns, enables to predict future well performance, design well operating envelop accordingly and, most importantly, develop a yearly schedule for proactive well treatments with SI. In conclusion, it shall be highlighted that discussed complex of well surveillance techniques has been concluded to be very efficient and reliable tool in identifying any scaling tendencies at its initial stage. Due to successful implementation of this approach in the Kashagan field, scale development is now well-managed and kept under control. To mention, that utilization of well surveillance techniques and methods outlined in this paper may reduce the time required to identify and ultimately mitigate well scale accumulation in any active assets with similar operating environments.

scholarly journals Quantifying Delay Risk Potential of Road Projects during Construction Phase: A Case Study

2019 ◽  
Vol 280 ◽  
pp. 05009
Author(s):  
Devi Anggraini ◽  
Jati Utomo Dwi Hatmoko ◽  
Mudjiastuti Handajani
Keyword(s):  
Assessment Instrument ◽  
Structured Interviews ◽  
Risk Levels ◽  
Project Completion ◽  
Road Project ◽  
Completion Date ◽  
Road Projects ◽  
Project Risks ◽  
Risk Potential

A comprehensive plan is required to anticipate risks in a construction project. In practice, however, anticipated or unanticipated risks may eventually lead to delays in the project completion date. The aim of this research is to quantify the delay risk potential of a road project during the construction phase. A project at Batang-Kendal road has carried out thorough planning for all required aspects. However, in the implementation of a project, there is often the occurrence of irregular events, which act as a case study for this research, from which delays were identified, observations mapped and semi-structured interviews conducted with project stakeholders, i.e. owner, contractors and supervisory consultants. An instrument was developed to assess and quantify the project risks identified using a 1 to 5 Likert scale. The results showed nine types of delay risks and 32 sub risks. The quantification of these risks was classified into four risk levels, i.e. extreme (6.25%), high (53.13%), medium (34.37%) and low (6.25%). These findings may represent delay risk potentials of typical road projects during the construction phase, from which lessons can be learned. The assessment instrument proposed can also be used for other road projects, which will be beneficial for project stakeholders in anticipating delay risk potentials.

scholarly journals Hidden High Voltage Safety Risks for Parallel High Voltage Transmission Lines

2018 ◽  
Vol 171 ◽  
pp. 02005
Author(s):  
M. Nassereddine ◽  
J. Rizk ◽  
M. Nagrial ◽  
A. Hellany ◽  
N. Moubayed ◽  
...  
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Electrical Power ◽  
Paper Analysis ◽  
Induced Voltage ◽  
Parallel Transmission ◽  
Safety Risks ◽  
Unsafe Condition ◽  
Risk Potential

High voltage (HV) infrastructures market is growing due to the corresponding growth in industries and population. To ensure continuous and reliable electrical power supply, existing substation and transmission lines are being upgraded to accommodate the additional load requirements. These upgrades involve up-rating the existing transmission lines or the installation of new lines. To save on easement cost and reduce the environmental impacts, transmission lines are occupied the same easement or path. This parallel option introduces the risk of induced voltage which could reach an unsafe condition and jeopardize the safety of works and people. This paper analysis and highlight the hidden risk associated with two parallel transmission lines that connected the same high voltage substation. The theoretical study which is supported by the case study shows the high risk potential tempering with the OHEW on the isolated circuit while the other one is still energized

Well Testing in Challenging Environments: A Case Study from Onshore China

2014 ◽  
Author(s):  
Xin Ling Peng ◽  
Mei Sheng Liang ◽  
Jie Hu ◽  
Xiao Lei Wu ◽  
Dong Lin Qin ◽  
...  
Keyword(s):  
Well Testing

Offshore Drilling & Well Testing of a HPHT Gas Well: A Case Study

2012 ◽  
Author(s):  
Prerak Hitesh Shah ◽  
Harsh Tusharbhai Pandya ◽  
Harsh Sharma ◽  
Arpit Saxena
Keyword(s):  
Well Testing ◽  
Offshore Drilling ◽  
Gas Well

Well Testing in Challenging Environments: A Case Study from Onshore China

2014 ◽  
Author(s):  
Xin Ling Peng ◽  
Mei Sheng Liang ◽  
Jie Hu ◽  
Xiao Lei Wu ◽  
Dong Lin Qin ◽  
...  
Keyword(s):  
Well Testing
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