bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increased Net to Gross Ratio as the Result of an Advanced Well Placement Process Utilizing Real-Time Density Images
Authors: Al-Fawwaz Abdullah , Al-Yosef Osama , Al-Qudaihy Dia , Al-Shobaili Yousef , Al-Faraj Hassan , Maeso Carlos , Roberts Iwan 
Published: December 2007

Abstract
Development drilling operations in the Zuluf Field / Khafji Reservoir (offshore Saudi Arabia) involve targets near the flanks of the main structure, where oil-filled sands are sandwiched between overlying gas and underlying water. Horizontal well technology is utilized to increase the reservoir footprint. This article relays recent geosteering examples in the Khafji Sand bodies. Demonstrated results show significant gains in well productivity through an advanced well placement procedure relying on real-time geosteering.
An asset team implemented a process of well placement in order to maximize the reservoir contact while drilling1. The process involves continuous exchange of information between the well site and the office-based teams to allow fast and informed decisions. The success of the well placement process has been enhanced by preparation prior to drilling, continuous interpretation of the real time data while drilling and integrated teamwork throughout the project. A key technology in the well placement process is the use of realtime borehole density images in addition to the standard LWD data. Continuous interpretation of the image data (providing bed dip and thickness) and correlation of the LWD data, with the offset well data and geological models, provided the information necessary to maximize the reservoir contact "net pay" along the horizontal lateral section.
A series of wells have been drilled using the advanced well placement process. Examples illustrate how real time interpretation of the data by the team increased the net to gross ratio from 35% to 50%. The resultant increase in production demonstrates the value and the necessity of the process in the ongoing development of the field.
A Case History: The Effective Use of Jarring Accelerators in Stuck Pipe Situations
Authors: Broussard Andre N. , Dacanay Julius U. , Pewitt Gregg A. , Walters John L. 
Published: December 2007

Abstract
The use of jarring accelerators in drilling assemblies has been technically substantiated for many years.1-6 However, the practical applications and actual effectiveness of drilling jar accelerators are not well documented or transparent. This paper provides a case history comparison of stuck bottom hole assembly situations in eight offset wells of similar geology and the effectiveness of drilling jar accelerators when included in the drilling assembly.
The location of the wells in this comparison is the Mak-Ban geothermal field in the Philippines. While the primary focus of this paper will illustrate the actual effectiveness of the drilling jar accelerator, operational theory and field applications of the tool will also be explained. This paper will document that the use of jarring accelerators in conjunction with drilling jars not only eliminated the number of occurrences per that the drilling assembly could not be jarred free, but also reduced the amount of jarring time required to free a stuck workstring. The analysis data for this paper was obtained directly from documented daily drilling reports and comparisons will be made between those wells drilled without using drilling jar accelerators and those wells drilled using drilling jar accelerators. The two primary comparison measures will be jarring time required on stuck pipe incidents per well and lost-in-hole occurrences per well. Theoretical data comparisons for stuck point displacement, impact and impulse will also be drawn for each stuck situation utilizing the proprietary jarring analysis software package discussed in Wang et al.1
The Role of Knowledge, Tools and Systems for Drilling Analysis
Authors: Lagreca Alejandro J. , Damski Carlos , Peden James M. , Nakagawa Edson Y. 
Published: December 2007

Abstract
This paper proposes a methodical structure to embody current expertise for the analysis of drilling data. This structure is based on two aspects: (1) the review of published literature, representative of present-to-day efforts to perform such tasks and (2) the use of the Methodological Pyramid Concept, to illustrate what elements typify a methodology.
The review of published works revealed that several key aspects of the analysis of drilling data are not clear, for example:Actual use of drilling data is still unclear and under debate;Most of the available engineering tools limit the range of applications to drilling performance estimators;The proposed methods of analysis vary depending upon the needs of individual organizations or processes using the concept of "method and methodology" indistinctly;Various sets of concept and theories from internal and external sources of drilling engineering knowledge have been used to develop existing methods and engineering tools.
Under this scenario, it seems that more effort is needed to unify current approaches to analyze drilling data i.e. within the scope of an independent field with common goals, theories, methods and tools that can support the decision-making process. For this purpose, the methodological pyramid was chosen as a convenient model to outline these efforts. By allocating some of the reviewed approaches within the elements of such a pyramid, and contrasting their different ideas where necessary, a Methodology for Drilling Analysis was formalized. It is believed that this methodology is a convenient framework for defining the goals and scope for an area of drilling expertise named Drilling Analysis and the evolving future role of the Drilling Analyst.
Jack-Up Mobilization in a Complex Soil Environment Including Mitigative "Swiss Cheese" Operations
Authors: Kostelnik Andre , Guerra Mike , Alford Jake , Vazquez Jose , Zhong Jack 
Published: December 2007

Abstract

Proposal
This paper presents the planning and execution to effectively mitigate the risk associated with uncontrolled leg penetration. Planning reviews the soil analysis work used to understand the hazards and the development of solutions for obtaining a suitable jack-up foundation. Execution describes the procedures used to implement the mitigation plan at the hazardous sites.
A New Method to Measure the Downhole Pressure in UBD
Authors: Zhou Yingcao , Gao Deli , Wang Guangxin , Zhai Hongjun , Zheng Zhongwen , Liu Yonggui 
Published: December 2007

Abstract
Underbalanced drilling (UBD) has gained strong momentum in recent years because of a number of advantages of the technology, including reduced formation damage and minimized lost circulation. UBD is mainly applied in exploratory wells in China, especially in deeper gas exploratory wells. Due to the inaccuracy of pore pressure and the complex nature of water, oil, gas, and solid multiphase flow in the UBD system, it is very hard to remain the UBD condition. Furthermore, conventional MWD or LWD can’t be used in multiphase flow annulus to measure the downhole pressure. Although EMWD is an ideal tool in UBD, its cost is too high. There have been many calculation algorithms or mechanistic models about multi-phase in UBD, but it is still not easy to gain accurate results. In this paper, a new tool is introduced, which was designed to measure the annulus pressure near bit during UBD, and the data is analyzed after round trip to gain the actual value of downhole pressure. Compared with the data about pore pressure gained through logging, the actual underbalanced pressure differential can be acquired. This is an effective approach in deeper gas exploratory UBD, especially in Daqing oil field, in which the change of deeper pore pressure isn’t obvious. Two deeper gas exploratory wells have been completed successfully by using this method with the tool. The design, manufacture and testing of the tool, as well as field problems encountered are reviewed in this paper.
Use of Cement As Lost Circulation Material - Field Case Studies
Authors: Fidan E. , Babadagli T. , Kuru E. 
Published: December 2007

AbstractCement is one of the most common lost circulation materials (LCMs). Various types of cement have been used as LCMs in the past. Recent developments in cement technology and the understanding of lost circulation have produced custom-designed applications utilizing effective cement types and compositions. Applications also vary depending on the drilling fluid type and its properties. Custom-designed applications include thixotropic and ultrathixotropic cement slurries; slurries containing cello flakes, mica, and CaCO3 for mechanical bridging; unique spacers and surfactant packages; and foamed cement for controlling loss.Selection of proper cement type and injection procedure calls for specific information such as formation properties, wellbore conditions, and thief zone characteristics. Laboratory experiments are recommended in this process. Field observations are also critical in making the final decision for selecting the optimum treatment fluid train and application strategy.This paper discusses the process designs and application of various cement types as LCMs. Solutions to four problematic field cases are provided. The conditions that require cement as an LCM and the criteria for selecting the best cement compositions are outlined along with optimal strategies.
Multistring Analysis of Well Growth
Authors: Aasen Jan A. , Aadnøy Bernt S. 
Published: December 2007

Abstract
This paper presents simple models to describe casing loading and wellhead movement during the completion (mechanical) phase and the production (thermal) phase. A wellhead-drop incident is investigated. The theory is simple, and the formulations are suitable for hand-calculation or spreadsheet. The presented models are suitable both for conventional and HP/HT (high-pressure/high-temperature) wells.
This paper also investigates an abrupt wellhead drop of several feet for an offshore well. The incident took place during wellhead cooling following a routine shutdown. The expected wellhead cooling contraction did not occur. After a cooling period the wellhead suddenly released. A corroded segment of the surface casing collapsed and the wellhead dropped.
World Longest Expandable Open Hole Clad & Open Hole Liner with Swelling Elastomer Deployed in Yibal Horizontal Well
Authors: Al-Balushi H. M. , Al-Rashdi M. H. , Al-Shandoodi M. H. , VanNoort R. H. 
Published: December 2007

Abstract
PDO has successfully installed the longest open hole clad and longest open hole liner with swelling elastomers in a Yibal horizontal oil producer well. The main objective of installing expandable liner combined with swelling elastomers was to efficiently isolate the water producing features/fractures that are dominating majority of the 957m of reservoir section.
This one horizontal well replaces five vertical wells at cost of two vertical wells. In addition to the cost reduction, the surface location construction constraints in the field do not allow drilling five wells from different locations to reach the required targets. Therefore the introduction of such well type allows drilling five well targets from one surface location.
The overall value Drivers for drilling and completing this well with expandable liners/clads with swelling elastomers were as follows:▪Restore some symmetry to the water flood process for proper surveillance and management.▪Vertical wells are uneconomic for establishing symmetry as they are only good for targeting oil sweet spots (reduced number of wells as a result).▪Allow for more & longer perforation intervals.▪Proper selective zonal isolation.
The bigger ID provided by the expandable tubular allows for running larger OD smart completion to control the production from specific perforation zones.
Initially 305 m of 5-1/2" x 6-1/8", Open Hole Clad was set at TD (2541 m), then a 687 m Open Hole Liner was tied back to the 7" liner.
Based on 6 arm caliper log, both expandable liner and clad were coated with 4mm and 5.5 mm thick swelling elastomer to achieve optimum annular sealing, covering total length of 425 m isolated interval. Initially perforated well with 4 intervals to produce from different zones. There are further 7 'blank' intervals between elastomer sections for future perforations.
The paper covers a brief background of the Yibal field, detailed technical planning and execution phases for drilling and completing the well with expandable technology & application of swelling elastomers.
Expandable Liner Hanger Application in Arduous Well Conditions Proves Reliability: A Case History
Authors: Cantu Joseph , Smith Pete , Nida Ron 
Published: December 2007

Proposal
In an effort to increase production in the gas fields of East Texas, horizontal wells have become the standard, as they have in many regions worldwide. Many times the horizontal section is preceded with a drilling liner to cover the build section of the well and isolate weaker fracture gradient zones prior to penetrating the production interval. Previously, many operational challenges were encountered during liner installation, resulting in costly shoe and liner top remedial operations or the inability to reach the total depth of a hole section. Primary among the hurdles are successfully deploying the liner across the weaker zones and negotiating the hole angle.
With the recent advancements made in the field of solid expandable tubular technology, several innovative products have developed from the core technology. One of these products is the expandable liner hanger. This product has been proven to greatly enhance liner operations in the well construction industry.
Expandable liner hangers offer many novel features not available or applicable to conventional liner hangers. These features include radial geometry and a hanger / packer body construction with no moving parts. The primary benefits of this system are superior seal, improved installation reliability, and a significant reduction in time required to complete the installation and to resume drilling operations. These benefits and others derived from the features listed above will be discussed in detail in this paper including results from a recent case history in the Mossy Grove field of East Texas.
GTL: Is it an Attractive Route for Gas Monetization?
Authors: Rahman Osama Abdul , Al-Maslamani Mohamed 
Published: December 2007

Abstract
The conversion of natural gas into synthetic fuel is an active area of development. Today, many large and independent oil companies as well as engineering contractors are involved in either research, pilot plants, or demonstration units with the objective of reducing capital and operating cost of this technology.
Beside the technology, the economic factor of the GTL process remains the major element in the application of this process. The major factors affecting the economics of the GTL process is the gas price and the capital cost. The GTL process could be an attractive way to monetize stranded gas reserves where the application of pipeline or LNG Technology is not techno – economically feasible, because the gas is either very far from the market and/or the gas reserve can not support a world scale LNG plant.
Fuel produced from the GTL process is practically sulfur and aromatics free, accordingly, exhaust emission from the GTL products is not an area of concern. As an example, exhaust emission pollutants from GTL diesel oil is much below those required by most stringent present and planned (future) specifications. However, carbon release cycle (from GTL production to consumption) is an active area of research and studies.
The availability of natural gas at reasonable price, present crude oil price and the environmental benefits of using fuel products derived from natural gas has led to the realization of many commercial scale GTL units at different parts of the world particularly in Qatar which is targeting to be the centre of the GTL projects. These worldwide projects are at different stages of implementation.
In this paper, an attempt was made to present the above consideration in more details for the GTL process as a route for gas monetization including a broad brush economic comparison with LNG production as an alternative competing route.
Separator Profiling: Kuito FPSO Case Study
Authors: Pearson Ken 
Published: December 2007

Abstract
The Kuito field, discovered in April 1997, lies offshore Cabinda Province in Angola's deep-water Block 14, a 1,560-square-mile concession. Kuito was Angola's first deep-water oil field to come on stream in December 1999, two and a half years after discovery. Kuito oil is produced via an FPSO chartered through SBM of Monaco and Sonangol on behalf of operator ChevronTexaco.
Kuito is a heavy oil ranging from 18 – 22 API. The FPSO presently has two oil production trains with a maximum throughput of 100,000 bbls. oil per day. Three phase, horizontal, gravity separation vessels are used to separate oil and gas from unwanted produced water and solids prior to transportation. Kuito production separators were designed with traditional, single point transmitters for interface and bulk level measurement. These level transmitters were capacitance type instruments mounted inside the vessels in stilling wells. Following production start-up, separation problems began to emerge, these were manifested in numerous process upsets and shutdowns. Kuito oil can form emulsions quickly and calcium naphthenate, or ‘Kuito Gunk’ as it is referred to on the FPSO, is produced at higher temperatures and if allowed to cool solidifies. The point instrumentation was unable to detect these emulsion and naphthenate layers resulting in the instrumentation becoming fouled and ceasing to function. The separators were operated ‘blind’, utilising tri-cocks located on the side of the vessel and as the instrumentation was installed in stilling wells inside the vessel it was impossible to maintain them without shutting down and depressurising the vessels. This paper describes how nucleonic profiling instruments were retro-fitted to the vessels and shows, with the aid of real time on line screen shots how operations were able to identify the different layers within the separators. This enabled oil production uptime to be increased and chemicals, emulsion breakers and defoamers, to be pro-actively dosed before the plant became unstable.
Benefits of Developing Knowledge Sharing Communities
Authors: van Unnik A. 
Published: December 2007

Abstract
Computer systems used to capture and retrieve knowledge that can be made available in digital format can only contain a fraction of the corporate knowledge. In implementing Knowledge Sharing the computer systems are complemented by Knowledge Sharing communities in which people share what they know and what they need to know.
Forming knowledge sharing communities locally is a practice that has many advantages but is more often than not limited to a small pool of colleagues with similar interests. Knowledge sharing through large virtual "communities of practice" makes available the practical and theoretical knowledge of many experienced professionals who need not sit in the same office, building or site. Modern communications technology and software can make this wider knowledge sharing an easy and low-cost reality.
Putting the knowledge of a larger community of professionals to use via a community network will benefit the business and reduce costs. Approaches taken and value measurements will be presented.
For the participants the knowledge sharing communities act as an on-site aid to continuous learning for professionals. This leads to new concepts for Knowledge Sharing and for Learning: WorkPLACE Learning.
Succession Planning – A Multi-Purpose Tool
Authors: Al-Marzouqi Yehay , Rathbone Mike 
Published: December 2007

Abstract
Context
During the year 2000 ADCO recognized that the lack of a formal system by which successors could be identified for leadership team posts was a weakness in its corporate business strategy.
Many consultancies offered "off the shelf" solutions but given the unique circumstances of not only the region but also its position in the industry as a leader, ADCO decided that it would recruit an independent contractor during 2001 to design and develop an ADCO specific system to match the needs of the company and its culture.
Nationalisation: Issues in Learning and Development
Authors: Aldred Deborah , Lees Martin 
Published: December 2007

Abstract
The ADNOC (E&P) group's Emiratisation targets have highlighted the need for competency development of UAE nationals. One issue within development is the nature and delivery of training. This in turn raises the important issue of the language of instruction, technology and business and the concept of English language competency. Another issue is that underlying any instructional methodology are sets of beliefs and values. Any mismatch between these and those of trainees has implications for the value/uptake of that training. Insights from a unique empirical study with a group of UAE nationals provide information about their preferred learning styles and cultural values. The findings have implications for understanding and optimising the learning and development process within the workplace, and illustrate the value of research within such a context. Setting competence descriptors and objectives are not the only considerations when developing a competent workforce.
Value of Quality Management in E&P Business Improvement and Integration
Authors: Al Mulla Badria 
Published: December 2007

Abstract
The paper presents an integrated model for Quality and Performance Improvement (Q&PI) Framework that has been established within ADCO (Abu Dhabi Company for Onshore Oil Operations) Petroleum Development Division (PDD) to ensure a continuous improvement in core activities. It highlights triggers and challenges which were behind the serious need for an integrated business model that will help the division in clarifying its vision in line with ADCO Business Strategy, and translate that vision into a set of business operational and measurable objectives.
The achievements of Q&PI Framework in unifying and integrating all the divisional business units around a common understanding of business key strategic drivers are presented. The critical business objectives that can be continuously assessed and upgraded toward achieving the business vision with minimum business/technical uncertainties are exemplified, indicating a significant improvement in a typical E & P environment.