bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coring Optimization: Wireline Recovery Using Standard Drill Pipe
Authors: Ahmed Hammad , Farese Travis , Mohanna Assaad , Adebiyi Ismail , Al-faraj Omar 
Published: October 2013

Abstract
Several days are spent during coring operations when Conventional Coring technology is being used, due to the multitude of trips in an out of the hole. Wireline retrievable coring is a unique technology offering capabilities to full bore core, drill and convey logs in a continuous operation without tripping out of the hole. This technology saves considerable time compared to multiple conventional coring runs.
Historically, one of the constraints with large diameter wireline coring systems is the requirement to pick up specialty drill pipe. This specialty drill pipe provides an internal diameter large enough to accommodate the retrieval of the inner components, utilized to cut 3" to 3.5" diameter core. Moreover, another constraint with large diameter wireline coring systems is the inability to run a jar within the drill string, due to internal diameter limitations.
A new wireline retrievable system capable of acquiring 3" diameter core utilizing standard 5 ½" × 4" drill pipe was designed for application on Saudi Aramco wells. In addition, custom large bore coring jars were designed and deployed to meet the operator's stuck pipe mitigation requirements. With several runs made, the newly designed wireline coring system brings a step change to coring technology, and increases its operational efficiency.
The improvement in this technology has drastically increased the efficiency of large diameter wireline retrievable coring technology and greatly improved the economics.
Utilization of Key Performance Indicators and Benchmarking Improves Drilling Performance for Several Operators
Authors: Saeverhagen Erland , Bouillouta Fouzi , Baksh Nazaad , Hughes Baker , Vettical Celestine 
Published: October 2013

Abstract
There have been significant developments in the evolution of well data aggregation, storage and analytics over the past two decades. Initially, trends were captured on chart recorders and paper charts in the mud logging units, where decisions were based on the experience of the personnel at the rigsite. In general, rig operations were usually successfully completed with the technology available at the time. However, with economic downturns, increased competition, and variations in oil and gas prices, the upstream industry has become far more cost and efficiency sensitive, requiring increased focus on non-productive time (NPT), whether it is due to failures or inefficiencies in the daily operation – we refer to this as Performance Opportunity Time (POT).
Through the definition of operational key performance indicators (KPI) and the introduction of intelligent software to calculate and benchmark these KPIs, POT or "flat time" on the drilling curve has been significantly reduced by critically analyzing certain work tasks at the rigsite, combined with remote services. The ability to compare the operational time breakdown for the same type of operation in near real-time across multiple rigs provides the operator with significant insight on the level of operational efficiency at each rig. In combination with remote advisory services, this provides a powerful solution to improve on operational performance
This paper illustrates how operational KPI data have been analyzed and benchmarked to enable active focus on recorded POT and the subsequent positive results.
Downhole Vibration Analysis: Fishing Agitation Tool Efficiency in Stuck Pipe Recovery
Authors: Voghell Mark , Mohanna Assaad , Hanley Christopher , Al-Khiriseh Cristinel , Al-Mousa Ahmed , Al-Amri Ali 
Published: October 2013

Abstract
A challenging and costly situation to overcome in modern day directional drilling applications is stuck pipe in open hole due to differential and/or mechanical sticking forces. Chances of recovery decay with time and conventional fishing with a bottomhole assembly (BHA) is frequently unsuccessful. By incorporating downhole axial-oscillation technology, the fishing reliability and effectiveness improve exponentially. The Fishing Agitation Tool (FAT) is an excitation component of the fishing BHA used to deliver low impact, high energy oscillation to the engaged fish. The FAT keeps the string in motion, breaking static sticking friction.
The FAT was used in Saudi Arabia for the first time to recover differentially stuck BHAs from a 6 1/8 in. hole in deep, high angle wells. The initial application involved pipe that was stuck in hole for more than 12 days without any movement, during which several conventional fishing BHAs failed. FAT was run in the final fishing BHA, getting the fish free after an hour of axially agitating and stroking the fish. After the pilot field trials in Saudi Arabia, and several successes in recovering mechanical and differential stuck BHAs, downhole vibration analysis proved the FAT effectiveness in assisting fishing BHAs in recovering stuck pipe more efficiently.
The FAT offers a new level of fishing technology that maximizes the effect and reliability of fishing BHAs in challenging wellbore environments, where conventional fishing techniques are deemed insufficient. This increased efficiency offers substantial reduction in fishing lost time, and an increased potential for fish and well recovery.
This paper investigates the effectiveness of the Fishing Agitation Tool through a study of the impact forces, impulse and drag forces generated by the FAT compared to conventional jarring operations, utilizing drag modeling as well as jarring analysis software.
Successful cases histories are reviewed to highlight the benefit of this technology.
An Innovative Ball-Activated Multi-Cycle Circulation Valve for Completion and Drilling Applications
Authors: Ali Mohsen , Hern Gregory , Xu Yang 
Published: October 2013

Abstract
Circulation valves are used in drilling and completion applications in a variety of configurations. They are used in the tool string to boost annular velocity, remove debris from the wellbore, perform well integrity tests, enable fluid movement between tubing and casing, and prevent pulling a wet string. In many applications, multiple cycles (open and close) are required to in order to complete multiple tasks in one trip. Multiple cycles can be achieved using mechanically activated circulation valves. However, in some configurations mechanically activated circulation valves require a hard bottom to manipulate the tool string. Consequently, a hydraulically activated multi-cycle circulation valve is desired in many applications, especially in deep wells, deviated wells, and drilling applications.
An innovative ball-activated multi-cycle circulation valve (BAMCCV) has been developed for these applications. The circulation valve provides three flow modes: to the bit only, to the circulation ports only, or a split flow between the bit and circulation ports. Three different size activation balls are used to manipulate the BAMCCV to these flow modes. In cased hole displacement, openhole drilling, and wellbore cleanup applications, flow can be split to maximize annular velocity for improved debris transport. In openhole drilling applications the BAMCCV can also be used in the circulation ports-only mode when lost circulation material must be spotted. This prevents spotted fluids from entering sensitive and expensive equipment such as measurement-while-drilling (MWD) and logging-while-drilling (LWD) tools. Blocking flow to the bit may also be desirable to maximize flow through the circulation ports when flushing debris out of recesses in blowout preventers. The decision whether to allow flow or to not allow flow to the bit when the circulation ports are open can be implemented at any time. The circulation ports can be opened and closed in the BAMCCV up to seven times. This enables greater efficiency in downhole operation by enabling multiple functions in a single trip. This paper presents the design, engineering, testing, field trial results, application and function of this new circulation valve.
The innovative BAMCCV can be used in a wide range of applications, and can be manipulated between three flow modes by dropping the correctly size ball. It enables performing multiple operations in one trip, and provides flexibility in selecting flow modes in response to well conditions. This flexibility is particularly important in deep, deviated, and problematic wells.
1st successful 6-1/8" Long Horizontal Hole (9,000 ft) Steering into a 2ft thick High Temperature Reservoir and Completed with 4-1/2" × 3-1/2" Slotted Liner. "UAE Case History"
Authors: Bin Shamlan Abdulla M. , Torres Fernando , Ben Romdhane Mourad , Al Kholy Ahmed B. , Abou Mostafa Suliman , Al Hammadi Adel M. , Abd Mokhti Mohd Ridzuan 
Published: October 2013

Abstract
ADCO aspires to push the established local boundaries via a new drilling campaign to develop 24 long horizontal wells. These wells have 9,000ft of horizontal section in deep and tight reservoirs targeting two zones that are only 3ft thick separated by a stylolite. The challenges of this project include drilling 1,500 ft. TVD deeper than previously done to land the wells, stepping down through 3ft styllolite and extending the horizontal section 260% further than the typical wells (3,400ft) in the same reservoir. To reach the proposed thin target requires intensive engineering work in the planning stage (e.g. Selection of downhole tools, casing selection, trajectory planning and mud/chemical selection.
The project started with pilot wells of 6,000ft and 7000ft. horizontal sections to gather information before proceeding with the 24 long horizontal wells. Front End Engineering phase was performed to ensure the capability of the chosen rig. Additional simulations were performed for critical operations; this is ended up in the successful run of 9000ft of slotted liner to TD. Detailed modeling and selection of appropriate LWD measurements were done to land the well and geosteer the long horizontal hole successfully throughout the reservoir. Lab tests were carried out for the selection of the lubricant to be used under challenging reservoir conditions. T&D models were calibrated while drilling the pilot Horizental sections to ensure that the first ERD well could be delivered safely, meeting all well objectives.
All learning from the pilot wells was captured and as a result the first ERD well in deep and tight reservoir was drilled to TD. This well achieved the longest well drilled with chemical R/A source in UAE. Excellent geosteering work was achieved for the successful well placement. The hole was drilled and tandem slotted liners run to bottom smoothly. ECD management played a vital role to minimize losses since the well was drilled close to its fracture limit. Lubricant proved to be compatible with the mud at high temperature (+280 degree F), avoiding foaming formation. All sections were drilled shoe to shoe successfully.
Systematic Approach to Optimize the Rig Move within ADCO Onshore Field
Authors: bin Sumaida Ali Sulaiman , El Gebaly Mohamed Ahmed , Loayza Alvaro F. , al Hammadi Adel , Abu aish Abdel Nasser 
Published: October 2013

Abstract
ADCO's Business Plan demands a high number of wells to be delivered in development Fields for better reservoir sweeping efficiency such as: Infill drilling, injector's patterns and maintenance work-over operations in the end of each year, that result in increase of 50% of rigs fleet to meet the DWS (Drilling work over schedule) requirements in the next 5 years because the expansion in production will be from 1.4 MM bpd to 1.8 MM bpd. The rig move is an important component in the DWS as the average rig move between the wells is 4.6 days which in total 110 days and that is our driver to minimize the time consumed in rig move and gain more days for BP
This Presentation will develop a study case for rig move optimization in BAB and ASAB Fields. In general two possible operation to move rigs are followed in our company: Mast-Up when the road allow us to do that, or conventional movement Mast-Down, if there are any obstacle in the way, like power lines, conductor lines or limited spaces (these movement requires additional time for laying down and rigging up the mast).
The main idea of this study was to analyze the wells planned for BAB and ASAB fields individually for the next year and assign the rigs in order to avoid the movements Mast-Down, additionally trying to minimize the distance for the movement of the rigs and to accelerate the movement. Keeping this in mind the first step was plot all the wells planned in the original schedule and try to find nearest locations in reasonable time sequence, reassigning wells between rigs, also noting the power lines and pipes already in place, minimizing the crossing of these. Subsequently a review of the initial scenario and the proposed one was issued and all the possible savings in time and money were calculated. We found savings in ASAB field estimated in 60 days and 8 MM $, for BAB field the savings are 390 day and 19 MM $
Experimental Study of Friction and Cutting Transport in Non-Circular Borehole Geometry
Authors: Taghipour Ali , Lund Bjørnar , Ytrehus Jan David , Opedal Nils , Carlsen Inge M. , Skalle Pål , Saasen Arild , Reyes Angel , Melchiorsen Jens Chr. , Abdollahi Jafar 
Published: October 2013

Abstract
Torque & drag and hole cleaning are important parameters to control during drilling operations, but the effect of wellbore geometry on these parameters are not fully explored. This paper presents results from an experimental study of torque and cutting transport in two different wellbore geometries; one circular and one non-circular, where spiral grooves have been deliberately added to the wellbore wall in order to improve cuttings transport. Improving borehole hydraulic and mechanics will improve drilling efficiency in general, and will in particular enable longer reach for extended reach drilling (ERD) wells.
The experiments have been conducted as part of an R&D project where the goal was to obtain reduced friction and improved borehole hydraulics and hole cleaning for more efficient drilling and well construction. The experiments have been performed under realistic conditions using a flow loop which includes a 12 meter long test section with a 2" OD freely rotating drillstring inside a 4" ID wellbore made of concrete. Solid particles were injected while circulating the drilling fluid through the test section at two inclinations; horizontal and 30° inclined from horizontal. The test results show that drillstring torque is reduced and cutting transport is improved in the non-circular wellbore relative to the circular wellbore. The experiments show up to 40% reduction in dynamic pressure drop for similar hole cleaning conditions of a non-circular geometry. In addition, the results show that the torque decreases by up to 15% in the non circular geometry relative to the circular geometry. The difference in torque is attributed to the reduced contact area between drillstring and wellbore for the non-circular geometry.
Such a comparative, experimental study of hole cleaning in different wellbore geometries has to our knowledge previously never been performed, and the results were obtained in a custom-made and unique experimental flow loop. The results and the experimental approach could therefore be of value for any one working with drilling. The results show that a non-circular wellbore with spiral grooves can improve borehole hydraulics and mechanics.
The Performance of Miscible Displacement in Marrat Reservoir
Authors: Al-Qattan Abrar , Gharbi Redha , Aladwani Faisal 
Published: October 2013

Abstract
Several Middle Eastern reservoirs are in advanced state of depletion and need new production and reservoir management strategies in order to meet the market demand. Several enhanced Oil Recovery (EOR) processes are employed to improve oil recovery in these reservoirs. One promising method which is applied in many of these reservoirs is CO2 miscible injection.
The Magwa Marrat reservoir is classified as a candidate for CO2 miscible injection although as yet this reservoir has not been significantly depleted. In order to investigate future management and production strategies of the reservoir, a small compositional sector model was developed. An optimization process for the WAG injection was then developed to obtain the optimum values of WAG ratio, slug size per WAG cycle, and total slug size. A series of simulation runs were performed to identify these optimum values.
After determining the optimum values, the performance of using horizontal wells was investigated and compared with the performance of using vertical wells. The result shows that the use of horizontal injectors in combination with vertical producers yielded better recovery in the reservoir than the use of vertical injectors.
New Workflow for Scale Precipitation in Production Equipment Resulting from Formation and Injected Water Incompatibility: Field Case
Authors: Al-Arji Faisal M. , Al-Amri Meshal A. 
Published: October 2013

AbstractScale precipitation is a common phenomenon that can be seen in a large number of oil fields worldwide. The presence of scaling is due to many reasons, including: temperature change, pressure drop, release of CO2 or the mixture of incompatible waters. Usually, scaling comes in a mixture of different scales, such as calcium carbonate (CaCO3), barium sulfate (BaSO4), and calcium sulfate (CaSO4). Scaling has a great impact on the production regimes where it sometimes ultimately decreases the well productivity to less than half of its potential. The presence of scaling can cause blockages in perforations, restrict/block flowlines or sometimes the failure of safety and choke valves.Precipitation of calcium carbonate on surface or subsurface equipment creates operational problems and acts as a blockage agent. In this case study, water incompatibility caused the first scale formation in the flowlines where a pressure maintenance mechanismvia peripheral injection in this field is being utilized. It was predicted from the well performance data as it showed more than 50% of the production loss. The lab results revealed that the major element was calcium with minor amounts of strontium and barium.This paper presents the results of both experimental and field work performed to identify scale formation. In addition, well performance data was used to predict future scale formation in parallel with the water geochemical analysis. The method used to remove scale precipitation is to use inhibited HCl acid mixture and it is required to be used either though squeeze treatments or by continuous treatments at the wellhead. Based on the lab and field studies, this paper will show new workflow for potential scale prediction and remedy actions prior to laboratory and well performance analyses.
Deploying Wireless Technology for Process Plants to improve Safety, Reliability and Efficiency
Authors: Qureshi Feroz Vikhar 
Published: October 2013

Abstract
Wireless technology is changing every aspect of the process control industry in the same way it is changing our everyday lives. Being able to quickly and cost effectively obtain real-time data from anywhere in the field at any time is essential for an industrial automation system. The obvious advantage of wireless automation is the immediate savings that can be realized in installation and maintenance-wireless installation typically costs as much as 50% less than the wired alternative. Industrial wireless automation isn't just about data acquisition and process control; but it is also about ensuring effective solutions for workforce mobility, equipment monitoring and equipment safety, physical and cyber security, and personnel safety.
The following paper describes the latest advancements in industrial wireless, explains how wireless solutions can be used to address Health, Safety and Environment (HSE) challenges in a typical processing operation, provides a guide to select the correct wireless infrastructure for industrial plants and makes an attempt to explain how the wireless technology acts as a true enabler and catalyst to ensure a Safe and Efficient operation of industrial facilitites
This paper makes an attempt to summarize various aspects of a Wireless infrastructure right from understanding challenges facing the industry today to why wireless is applicable and how it acts as an enabler technology. We will also try and understand where wireless can be used in industrial environment and also answer a very important question about what is the right choice for you when it comes to chosing a wireless infrastructure. The paper concludes by summarizing some important tips around designing a wireless infrastructure and benefits for an end user
Defining Robust and Efficient HSSE&SR Standards: a Major International Oil and Gas Company's Experience
Authors: Garland Emmanuel 
Published: October 2013

Abstract
The paper presents how Total has built a reference system which aims at guiding its working force (internal and contracted staff) wherever they are and act, in implementing the Health, Safety, Security, Environment and Social Responsibility (HSSE &SR) policy of the Company. That policy can be summed up as the following: no harm to the people or to the environment; no loss of assets; ensure that the business benefits to the communities where activities take place, on the long term.
On top is the HSE&Q Charter, signed by the CEO. It defines key principles. These are translated into Headquarters Company Rules. Based on them, the Oil and Gas Exploration and Production Branch has defined its core rules, which are to be applied to all its entities, headquarters and affiliates. Each of them addresses one topic identified in the HSSE&SR management system. The prescriptions of these rules are refined in daughter rules, general specifications, and guidance manuals, etc.
Such a system must be flexible enough to adapt to local regulations as national regulations are always on top of the hierarchy. To ensure that there is no loophole Total has strictly defined how any voluntary deviation of its rules must be addressed to ensure the adequate risk control.
The last but not least steps are implementation of the reference system, training of the people, auditing process, and management of change. The network of HSSE&SR leaders, in the headquarters and on every site plays a key role in making the system efficient.
Regulations and expectations have dramatically changed during the recent years. The company responded to these changes, and has a policy to anticipate future changes.