bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhancing Productivity Using Blended Acquisition with Temporally Signatured/Modulated and Spatially Dispersed Source Array
Authors: Ishiyama Tomohide , Ali Mohammed , Blacquiere Gerrit , Nakayama Shotaro 
Published: November 2019

Abstract
Recently, we established a blended-acquisition method: temporally signatured and/or modulated and spatially dispersed source array, namely S-/M-DSA, that jointly uses various signaturing and/or modulation in the time dimension and dispersed source array in the space dimension. Our S-/M-DSA method makes the blended-acquisition encoding and operations significantly simple and robust, as well as for the deblending processing. In this paper, we discuss how this method enhances the acquisition productivity, in addition to the deblending performance, both in the time and space dimension. This shows that S-/M-DSA enhances the acquisition productivity by decreasing the sweep length by a factor of the number of frequency bands in the time dimension, and decreasing the number of simultaneous shots using non-uniform, even-but-random and multi-scale sampling in the space dimension. This also reveals that S-DSA attains a best acquisition productivity whereas M-DSA attains a best deblending performance compared to conventional blending methods.
A Novel Technique for Removing Wax Deposition in the Production System Using Thermochemical Fluids
Authors: Hassan Amjed , Alade Olalekan , Mahmoud Mohamed , Al-Majed Abdulaziz 
Published: November 2019

Abstract
In the petroleum industry, deposition of hydrocarbon wax is one the critical problems. Wax can deposit and accumulate inside the well completion, surface facilities and transportation pipelines. Wax deposition can lead to significant pressure drop in the production system and may result in stopping the hydrocarbon production. Several treatments are used to remove the deposited wax and improve the hydrocarbon flow. This paper presents a new and cost-effective technique for removing the wax deposition from the production system. In this work, inexpensive and environmentally-friendly fluids have been used for wax removal. Chemicals that able to generate heat and pressure at certain condition were used.
In this study, thermochemical fluids were utilized to remove the accumulate wax in the production tubing. Actual wax from Arabian oil field was used to mimic the real condition of wax deposition. Thermochemical solutions that consist of two chemical reagents were used to remove the accumulated wax in a production tubing. The used chemical can react at certain condition and generate significant amount of heat and pressure. Temperature up to 500°F and pressure up to 2000 psi can be in-situ generated due to the thermochemical reaction. The chemical reaction can be triggered using acetic acid as an activating agent, to reduce the operational time for wax removal.
The results showed that, more than 95% of the deposited wax can be removed using thermochemical solutions. The in-situ generated heat is able to liquefy the precipitated wax, then, the induced pressure due to the chemical reaction can flush the wax out of the production tubing. The used chemicals did not result in any damage in the pipeline, no corrosion or precipitation was observed in the production tubing. Also, the generated pressure due to thermochemical treatment did not reduce the pipe integrity, no pipe enlargement or damage was induced in the treated samples.
This study presents a novel and high-performance treatment for wax removal using thermochemical fluids. The used chemicals can remove the wax from production tubing, surface facilities, and transportation pipelines; without affecting the integrity of the production system. The thermochemical fluids can be used at harsh situation of high temperature and high salinity condition. The obtained results show that there is a good potential for field application of this work in the next few months.
EPC Contractor's Strategies for Timely Completion of Offshore Brownfield Projects
Authors: Onojeta Kennedy Mudiaga , Karuppusamy Kandasamy K. , Agrawal Rajender Kumar , Kamal Faris Ragheb , Takieddine Ousama Halim 
Published: November 2019

Abstract
The O&G industry is continuously seeking cost reduction strategies that result in competitive advantage among their competitors especially during periods of fluctuating oil price. This has led to the engagement in Brownfield projects as a cost saving measure which arguably involves less capital to execute when compared to Greenfield projects with high cost of execution. Hence, Operators and EPC Contractors tend to focus on cost efficient and sustainable approaches that will maintain the profit margin and gain competitive advantage. This strategy places the companies in a better shape such that after the price fluctuation periods, they will be more prepared to face new challenges in developing new fields that will improve their bottom lines and be leaner in their operations.
The focus of this paper is on the strategies applied in executing Brownfield works for many offshore platforms in Arabian Gulf by National Petroleum Construction Company (NPCC). The case study demonstrates the installation of over 3500 tonnes of deck extensions onto existing platforms using a simplified design approach, standardized seafastening arrangements that requires less offshore work, minimal interface and operations shutdown of live equipment.
Collaborative Workspace for Employee Engagement Leveraging Social Media Architecture
Authors: Chowdhury Khairul , Lamacchia Diego 
Published: November 2019

Abstract
Employee Engagement had long been a challenge for any organization in the world. The problem has been even worsened due to the enhanced endeavor on digital transformation, where most of the employees are left behind. In addition to that, the new (and young) generations who are heavily social media-oriented face substantial challenges to engage themselves into the workplaces, which are either very much traditional or much advanced to adopt and require substantial skills.
The objective of this paper is to present a digital collaborative framework, intelligent digital Eco-System (iDES) for bringing multiple organizations and employees along with their work and communication into one single platform that engages all generations of employees. The framework is built addressing the architecture of a new of way of project management, the "Open Project Management" (OPM). Such framework will allow workers to engage in the organization by bringing personal lifestyle of using social network, which should trigger a cultural step change in the workplace.
A digital collaborative work-space mimics popular social media platform. In the workspace the employees in the network are connected thru projects, and allows making of attractive dynamic reports by incorporating drawing visuals, complex analytics, cloud applications, videos and visualize their existing documents or presentations or spreadsheets to create their work-image. A project management capability, that allows synergism of traditional and agile approach, is introduced to have a truly team driven project management process for valued tasks, including an effective communication tool with a scheduler, video conferencing, and file sharing. eLearning modules facilitating easy training and knowledge share are also introduced for technology adoptions. Overall, the workspace is designed to have most of the work process within the system, allowing employees to display their work out of their siloed room structure to an open digital space.
Such architecture of collaborative work space allows a creation of self-image, like social media, into the workplace, enhancing employee motivation towards work, increases multi generation employee participation in digital transformation and providing a transitional phase to any employee through the cultural step change required to implement digital transformation objectives.
The comprehensive capability of performing tasks and engagement into one single place will create substantial amount of data related to human resources which can be utilized for further enhancement of employee engagement and empowerment. The novelty of the digital workspace lies in empowering people in many details and helps driving business by making them a fundamental building block in the digital transformation endeavor.
Planning, Design and Optimization of CT Intervention for the First Successful Multistage Fracturing Completion with Sand Control System in the Region
Authors: Rodoplu Rasim Serdar , Al-Mohanna Khalid S. 
Published: November 2019

Abstract
For the first time in the region, a multistage fracturing completion technology that enables simultaneous fracturing and controlled sand production was successfully installed. After the fracturing operation was conducted through frac ports in multiple zones, coiled tubing (CT) intervention was needed to shift the frac ports closed and then open the production sleeves located within the sand screens. It was necessary to use the appropriate shifting tools and utilize the downhole parameters to ensure the shifting operation success.
CT was first utilized to mill the frac balls and associated seats after the fracturing operation, and this was followed by CT intervention to close the frac ports and open the sand control production sleeve. CT providing real-time downhole parameters was utilized during the shifting operation as its downhole weight provided the ability to apply required surface forces to shift the respective well accessories. Additional benefits were gained by utilizing the depth correction and obtaining the required differential pressure across the shifting tool in real-time ensuring tool functionality at optimum parameters.
The success of the innovative multistage completion operability depended on the successful implementation of shifting operations to close the frac ports and open the production sleeves with sand screens. Therefore, it was very important to select and deploy the appropriate shifting tools that can be trusted to actuate each of the respective well accessories. A series of yard tests were conducted to understand the hydraulically operated shifting tools. After the successful yard tests, during the design phase, each of the shifting operation steps were elaborated with the respective contingencies, and it was confirmed that the CT equipment utilized for the job can provide the required surface and downhole weights.
The hydraulically activated shifting tools operation during the actual CT intervention was optimized using the CT by providing real-time downhole measurements of depth correction, tension, compression and pressures. The downhole measurements helped in repeating the shifting step as needed and helped in confirming that the respective well accessory is shifted. During the intervention, two frac ports were shifted close. Whereas, there were two production sleeves with screens shifted open.
The use of the two different hydraulically activated shifting tools during the shifting operations for the first successful multistage fracturing with sand control completion system will be detailed. The paper also describes the full benefits of monitoring downhole parameters during shifting operations enabling the tools to operate at optimum conditions and ensuring the shifting is conducted successfully.
Use of Advanced Drilling Engineering to Define the Correlation Between ROP, MSE and Formation Properties in the Crest of a Giant Offshore Field in Abu Dhabi
Authors: Iftikhar Choudhry Bilal , Cantarelli Elena , Abdulrahman Alzaabi Mohamed , Toki Takahiro , Al – Ali Salim , Khaled AbdelKarim Islam , R. Oviedo Vargas Mario , Ahmed Osman Mohamed , Torres Javier , Kadoura Olla , Alfonso Mendez Freddy , AlQahtani Bader 
Published: November 2019

Abstract
The paper explores the contributing factors impacting/constituting enhancement of the drilling in the 6' section in one of the giant offshore fields of ADNOC. While there is a tangible and obvious contribution from the surface manipulation of parameters, there is also an irrefutable connect between down hole factors and ROP. Factors such as formation density, porosity, Mechanical Specific Energy, Orientation, mud weight, DDI crestal or flank placement of the well and their impact on performance. The crestal wells have come with their own inherent downhole problems and challenges. While at times there is linearity between the formation Mechanical Specific Energy and formation Density, there isn't necessarily a linear relationship between the drilling parameters and the resultant ROP. The density and porosity of the formation not only impact the MSE but the ROP downhole as well. The required parameters to drill each formation also vary with these properties and their effectiveness can in turn be tracked with the MSE being seen as a direct result of the BHA and formation interaction. The analyses entailed cover the formation density, discrimination plots, Azimuth, mud weight, BHA stabilizations, MSE and the respective intra parameter interactions that form the overall resultant drilling performance.
Challenges and Opportunities to Reduce Flaring at Upstream Oil and Gas Facilities - Highlights of Petroleum Development Oman's Strategy as an International Best Practice
Authors: Agrawal Harshit 
Published: November 2019

Abstract
Flaring at oil and gas facilities leads to significant loss of gas resources, impact environmental air quality, as well as affect the organization's reputation. Global benchmarks indicate that around 145 billion cubic meters of gas was flared globally in 2018. This amount of gas is enough to power whole of the African continent. At an organization level, flaring can contribute to loss of more than 2% of a company's overall hydrocarbon production. This is partly due to a misconception that the value associated with continued oil production is often much greater than avoiding flaring the associated gas. As organizations develop strategies to reduce flaring, it is important to consider different aspects for establishing a holistic framework to achieve long-term value for the organization. This paper provides an overview and summary of these aspects which have been deployed at Petroleum Development Oman such as identification and delivery of new technology solutions, management of upsets leading to non-routine flaring and deployment of an innovative Heart's and Mind's program called Let's Talk Flaring.
Similarly, it is important to understand and address the challenges and opportunities, which typically arise while implementing flaring reduction at upstream oil and gas facilities. These challenges include, unclear ownership of associated gas, lack of off-takers in local energy system, equipment troubleshooting capabilities at local or regional scale etc. This paper describes how some of these challenges offer new opportunities towards effective utilization of associated gas.
The Effect of Pore Geometry on Relative Permeability in Mixed-Wet Carbonate Reservoirs in Abu Dhabi
Authors: Dernaika Moustafa , Masalmeh Shehadeh 
Published: November 2019

Abstract
Carbonate rocks are complex in their structures and pore geometries and often exhibit a challenge in their classification and behavior. Many rock properties remain unexplained and uncertain because of improper characterization and lack of data QC. The main objective of this paper is to study flow behavior of relative permeability with different rock types in complex carbonate reservoirs.
Representative core samples were selected from two major hydrocarbon reservoirs in Abu Dhabi. Rock types were identified based on textural facies, PoroPerm characteristics and capillary pressure. Porosity ranged from 15% to 25%, while permeability varied from 1 mD to 50 mD. Primary drainage and imbibition water-oil relative permeability (Kr) curves were measured by the steady-state technique using live fluids at full reservoir conditions with in-situ saturation monitoring. High-rate bump floods were designed at the end of the flooding cycles to counter capillary end effects. Aging period of 4 weeks was incorporated at the end of the drainage cycle. Robust data QC was performed on the samples, and final validation of the relative permeability was conducted by numerical simulation of the raw data and measured capillary pressure.
The followed QC procedure was crucial to eliminate artefact in the relative permeability curves for proper data evaluation. The different rock types showed consistent variations in the relative permeability hysteresis and end points. Imbibition relative permeability curves showed large variations within the different rock types, where Corey exponent to oil ‘no’ increased with permeability from 3 to 5, whereas the Corey exponent to water ‘nw’ decreased with permeability and ranged from 3 to 1.5. The variations in the relative permeability curves are argued to be the result of different rock structures and pore geometries. Variations were also seen in the end-point data and showed consistent behavior with the rock types.
The different carbonate rock types were identified based on geological and petrophysical properties. Higher permeability samples were grain-dominated and more heterogeneous in comparison to the lower permeability samples, which were mud-dominated rock types. Imbibition Kr curves showed larger variations than the primary drainage data, which cannot be interpreted based on wettability considerations only. The relative permeability curves have been thoroughly evaluated and QC'd based on raw data of pressure and saturation by use of numerical simulation. Such RRT-based Kr data are not abundant in the literature, and hence should serve as an important piece of information in mixed-wet carbonate reservoirs.
Q-Compensation from Near Surface to Reservoir and Below: Case Study from Onshore Abu Dhabi
Authors: Smith Cara , Vasilyev Pavel , Glushchenko Anna , Zarubov Dmitriy 
Published: November 2019

Abstract
Interest in quantitative interpretation (QI) of seismic data in the Abu Dhabi region continues to steadily increase, and the objective of creating inversion-ready seismic data is driving evolution of the surface seismic data processing workflows to focus on more detailed and thorough handling of the amplitude and phase throughout processing (pre-, during, and post-imaging). To achieve close well ties across the survey and to ensure the data is suitable for interpretation purposes, zero-phasing and wavelet stability (along with using well information during earth model building) are key stages in the depth imaging seismic processing workflow. Accurate amplitude with offset and azimuth handling is also required for inversion studies. In this paper, we propose a workflow where a geophysically and geologically credible, 3D variable Q-field is built into the earth model early in the processing flow, allowing a more complete approach to handling the Q-effects of the subsurface without increasing project turnaround time. This case study shows that a data-driven spatially variable Q-field combined with Kirchhoff Pre-Stack Depth migration compensates effectively for both amplitude and phase effects, providing a broadband image with improved event continuity and better handling of noise compared with applying a constant pre-migration Q-compensation (which was previously thought to be suitable for this low-relief region). By calibrating the variable Q-field to available well logs and near surface information, and ensuring that the different geophysical parameters in the earth model are all suitably coupled, an enhanced image is achieved which then requires minimal spectral shaping or residual phase corrections post migration. Ray-based Q-tomography workflows allow iterative 3D updates alongside coupled subsurface properties like anisotropy and velocity, within a high-resolution Earth model suitable for depth imaging. Reliable phase stability, higher resolution, broader useable bandwidth and improved amplitude preservation are key targets of this holistic approach.
Predicting Valve Failures in the Digital Age of Valve Management
Authors: Jeeves Simon Clausen , Berstad Carina , Gjøvåg Markus Bratten , Riple Mathias , Bjorøy Marita , Sangolt John-Kenneth , Erstad Thomas 
Published: November 2019

Abstract
Valves are critical and essential parts in an oil & gas (O&G) production plant, which means that if a failure occurs it can potentially great implications on safety and profitability of the plant.
The traditional approach in today's oil and gas process industry for verifying valve reliability is simplistic and provides little information regarding valve degradation mechanisms.
Therefore, this paper discusses new theories and concepts to help increase the reliability of production & safety critical valves.
Focus has historically been targeting on using corrective and scheduled maintenance strategies, rather than using condition and performance monitoring applications as a tool to plan and prioritize maintenance and achieve a higher standard for safety.
In the search for a solution to increase the reliability of production and safety critical valves it is reasonable also to look at industry 4.0 and its concepts. The digital revolution which implements concepts such as cyber-physical systems (CPS), industrial internet of things (IIoT) and cloud-based storage. Based on these concepts the paper visits the use of valve diagnostic systems for identifying failure mechanisms of valves subjected to degradation by the application of sensors and small computers used to continuously monitor valve performance and store this data within cloud-based servers.
Today we experience an enormous progress in real time monitoring by use of sensors in conjunction with data collectors. There is new technology to process and gather data that supports decision making, such as Valve Diagnostic System (VDS). By taking advantage of new technology there are immense benefits to be had by monitoring valves rather than traditional physical observation and testing. This method has multiple advantages and it can contribute to reducing maintenance cost, down time and increase safety.
Multiple unwanted and hazardous events have occurred through the last decades, such as the tragic Piper Alpha disaster (Macleod & Richardson, 2018). This has contributed to drive the industry to improve and adhere to safety regulations and requirements. This makes the sensor technology even more beneficial and opens a wide range of potentials within the maintenance- and risk management genres.
Today all in-operation risk calculations are based on reported accidents or unwanted occurrences. This practice gives way to inaccurate reliability calculations that are indisputable and inaccurate. It is a practice where potentially many failures are not reported, understood or even revealed. Experts within Functional Safety Management points to the basis of the calculations with skepticism due to the validity of the data and the fact that the data in itself is not a proactive approach to sound valve management.