Best Cost-Effective Technology Independent and Neutral Company 24/7 Worldwide Technical Support MARCH 2011 TECHNICAL UPDATE The independent Data Distribution Company. File View Language Profiles GoTo Favorites Help

Independent neutral vendor with no affiliation to any service company. Reduced cost solution via an integrated turnkey solution that does not rely on a combination of several service companies’ solutions or in-house solutions. Improved security. Better work flow capabilities that allow QC, editing and sharing of information both within the operator’s own organization and externally with third parties. More efficient data management at point of acquisition Partners and government agencies retrieve only the data that they want from a central repository. Data is made available through a network of synchronizing servers on both corporate intranets and the Internet. Conversion of graphical images to Adobe Acrobat PDF files. Combination of real-time and static data with specialized engineering to optimize drilling operations. Real-time data integration with specialized drilling software to evaluate, for example, pore pressure and losses from LWD data. 24/7 monitoring and quality-control of the real-time data stream Petrolink is a well established information and communications technology service company specializing in the oil and gas exploration and production sector. Petrolink has provided IT and communications solutions to oil and gas operators whether super majors, or smaller independent operators for more than 15 years. Petrolink has adapted and evolved its solutions and services to suit the needs of its customers in this technology driven service sector. Petrolink has a highly skilled and experienced team of people recruited from the oil and gas, software development and information and communications technology industries to provide tailored solutions to the needs of our growing client. Petrolink has become the market leader in the secure transmission and distribution of geotechnical and associated data throughout the world. Petrolink has strategically placed its personnel and offices across the globe to provide the best possible level of support to our clients All data types (such as reports, logs, spreadsheets and more) may be uploaded by anyone with the correct access rights using a web browser from anywhere in the world to a server that is easily accessible even from a remote location (production platform, drilling rig, seismic vessel or overseas office). Within a few minutes the data is replicated (or synchronized) to all the Petrolink servers whether on the Internet or on a corporate intranet. This enables all authorized parties with the correct access rights to access the information securely and quickly. DATA + PEOPLE + PROCESS The Right Data to the Right People at the Rigth Time ABOUT PETROLINK

DATA Real-Time as well as static data in any file type can be stored in our platform developed to run trough web browser PEOPLE Information Technology and Engineering Knowledge for enhanced analysis and decision-making. PROCESS Customization to clients operation process and methods. PETROKNOWLEDGE Petrolink provides a Engineering Data Services for Improved Operation Performance. DATAFLOW

DATA Real-Time as well as static data in any file type can be stored in our platform developed to run trough web browser PEOPLE Information Technology and Engineering Knowledge for enhanced analysis and decision-making. PETROLINK Petrolink provides a Engineering Data Services for Improved Operation Performance. DATAFLOW

REAL-TIME MONITORING Monitoring drilling activities (drilling, tripping, circulating,…) in real-time, and generation of alerts in case of unusual or unexpected situations to prevent operative problems. DRILLING Following-up wells, and generation of technical recommendations and proposals to optimize the drilling process. COMPLETIONS Following-up cementing, stimulations and completion activities, and generation of technical proposals to optimize the completion process. GEOLOGY Optimizing the drilling process by adjusting lithology columns based on log and seismic data. GEOMECHANICS Optimizing the drilling process by adjusting the geomechanical models, based on log and seismic data from actual and correlation wells. IT Ensuring availability of real-time, correlation and historic data; maintaining IT services and the WITSML store. ENGINEERING KNOWLEDGE

CRITICAL International Standard Wells according to schedule Optimal operative conditions Lithology column as planned Drilling parameters out of range. Frictions, resistance and torque. Partial losses. Unplanned trajectory. Fluid conditions out of range. Proximity of casing pipe seat. Changes in rate of penetration. Failure of directional tools. Failure of drilling apparel. Activity suspension due to community conflicts. Activity suspension due to weather conditions. Total losses. Kick. Stuck pipe. Side-track. TRAFFIC LIGHTS PROCEDURE IN ALERT NORMAL OPERATION DRILLING EFFICIENCY

ALERTS RECOMMENDATIONS PROPOSALS PLANNING ENGINEERING PRODUCTS ALERTS Preventing operative problems from the identification an unexpected or unusual tendency on the real-time surface and logging parameters. RECOMMENDATIONS Optimizing drilling conditions from the analysis of real-time and near real-time data. PROPOSALS Reducing recurrent operative problems by proposing operative alternatives based on real-time, near real-time and historic data. PLANNING Improving well design by adjusting the drilling, completion and/or workover planning, based on real- time, near real-time and historic data. PRODUCTS

ENGINEERING PRODUCTS RECOMMEDATIONS Increase flow to improve hole cleanness Design string bit for narrow holes Implement friction reducers

ENGINEERING PRODUCTS PROPOSALS Design casing pipes Alternative trajectories Optimize casing pipe seats

ENGINEERING PRODUCTS PLANNING Workflows Directional programs Hydraulics analysis

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