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Deep Gas and Condensate Exploitation – Best Practices and Technology Applications

20 – 21 March 2013

Santa Cruz de la Sierra, Bolivia

Technical Agenda

Wednesday, 20 March, 0830–0900

Keynote Speaker Presentation

Luis Alberto Sanchez Fernadez, YPFB Vice-President de Contratos, Administration y Fiscalizacion


Session I: Reservoir Characterization Challenges and Case Studies

Session Chairpersons: Jaime Soria, YPF Chaco

Naturally fractured tight sands reservoirs that host a significant proportion of the region's gas reserves, can be very complex and heterogeneous, leaving room for significant uncertainty. The importance of the dual porosity model as a representation of the natural fractures, the analysis of flow of the matrix to fractures, fractures as channels of high permeability flow, or flow barrier, are key elements of analysis. This session will cover the main methodologies, best practices, new process and workflows, and technologies that support state-of-the-art in reservoir characterization and engineering.

The integration of seismic, geology, and well data will be shown as a key element in reducing the natural and distinctive uncertainty that fractured reservoirs bring to the subsurface studies. Regional examples that frame case studies in geo-statistics and modeling for sandstone reservoirs will also be presented, showing the positive or negative impact fractures can have on production performance.

Speaker 1: Juan Carlos Córdova, Repsol Bolivia
Margarita Field Characterization

Speaker 2: Julio Quinteros, Petrobras Bolivia
Geological Modeling of Uncertainty

Speaker 3: Joaquin Teixeira, Petrobras
Geomechanical Integrated Model in a Field of the Sub Andean Basin of Bolivia


Session II: Reservoir Engineering Challenges and Case Studies

Session Chairperso: Edgar Sagarnaga, YPFB Chaco

Discussion continued from Session I as related to challenges encountered in reservoir engineering.

Speaker 1: Jaime Soria Galvarro, YPF Chaco
Evaluation of Prospects for Oil and Gas, and Valuation of Geological Risk

Speaker 2: Jose Luis Riveros, YPFB
Materials Balance

Speaker 3: Wilson Cañas, Ecopetrol
Cupiagua Field—Learned Lessons on Characterization of Rich Gas Condensate Fluid Systems and PVT Modeling in Deep Naturally Fractured Reservoirs


Session III: Field Development Strategies and Production Challenges

Session Chairpersons: Jose Alvarez, Petrobras and Luis Gonzalez, Weatherford

One of the most difficult aspects of planning high well productivity field development is quantifying and establishing the volumetric associated with production levels during the life of a naturally fractured tight sands field. The planning strategies used to analyze production must face a high level of uncertainty presented by the presence of fractures and other characteristics for these reservoirs. This session will present lessons learned, state-of-the-art technologies, new developments and best practices used to mitigate uncertainties in field development of high well productivity reservoirs.

  • Development options and strategies for naturally fractured tight sands reservoirs
  • Early stages of data acquisition—well test
  • Permanent data monitoring—reliability
  • Water conformance techniques
  • Managing uncertainties: next generation integrated modeling and simulation tools
  • Well and reservoir management
  • Intelligent completions—selective production
  • Remote oilfield management
  • Logistics challenges—planning

Speaker 1: Roger Sanchez Jimenez, Schlumberger                                             
Hibrid System for Monitoring

Speaker 2: Tobías Ricardo Olmos Torres, Repsol                                                
When You Need More From A New Technology…

Speaker 3: TBC


Session IV: Field Development Strategies and Production Challenges (Part 2)

Session Chairpersons: Fernando Pacheco, Consultant and Carlos Ferraris, Petrobras

Discussion continued from Session III.

Speaker 1: R Chokachi, Weatherford                                            
Real Time Welltesting

Speaker 2: Israel Montes, Halliburton                                              
Managed Pressure Drilling (MPD) in the San Alberto Gas Field: Challenges and Results

Speaker 3: Daniel Rodriguez, Weatherford
Downhole and Surface Challenges of Mutiphase Flow Meatering: Case Study

1700– 1800

Networking Reception

Thursday, 21 March, 0830–0900

Keynote Speaker Presentation

Repsol Peru President


Session V: Drilling Challenges and Lessons Learned

Session Chairpersons: Edwin Badani, Repsol

Drilling muds causes large irreversible damage to open fracture networks and leads to low production of wells. This session will discuss drilling challenges in the region of the south of Sub-Andean with fractured reservoirs and will include the following topics:

  • Applicability of new drilling technologies for fractured reservoirs
  • Applicability of new drilling technologies to drill carboniferous formations
  • Well design in fractured reservoirs (trajectory, placement, geo-steering, under-balance drilling)
  • Drilling fluid selection for interested intervals (non-damaging, solids control, under-balanced)
  • Perforation and stimulation techniques
  • New technologies in drilling for gas reservoirs
  • Case histories in drilling for fractured formations

Speaker 1: Don Whitifill, Halliburton                                                
Lost Circulation Mitigation in Naturally Fractured Formations

Speaker 2: Pablo Andino, MI Swaco                                                 
Thermal Technology for Oil Cuttings

Speaker 3: Gustavo Parraga, Baker Hughes                                              
Drilling Optimization of the Carboniferous Formation using Automated Drilling
Tools and Hybrid Bits


Session VI: Drilling Challenges and Lessons Learned (Part 2)

Session Chairpersons: Ricardo Vasquez, Repsol, and Javier Endara, Pluspetrol

Discussion continued from Session V.

Speaker 1: Mario Bertarelli, Repsol Peru
Safe CARB Blend For Minimizing Fluid Invasion

Speaker 2: Carlos Rojas, Repsol Perú, Harada, Antonio, NOV
Fusetek Bit to Optimize ROP and Durability in Hard Formations

Speaker 3: Cesar Villegas, Schlumberger
Survey Managment and Anti-Collision in Bolivian Fields

Speaker 4: Nguyen Marcelo, Jeremy Palomino, Javier Villaseca, Petrobras
Successful Experience using Combination High-Torque Motor and RSS in Exploratory Well


Session VII: Completions Challenges and Lessons Learned

Session Chairpersons: Cidar Mansilla, Halliburton, and Jose Escobar, Petrobras

This session will discuss challenges and lessons encountered during the design, execution and evaluation of the completion type implemented in the deep gas wells in fractured reservoirs. An inaccurate completion selection causes irreversible damage to open fracture networks which leads to low production of wells. The session will cover:

  • Strategies for completions in fractured reservoirs
  • Down hole pressure and temperature monitoring techniques
  • Down hole rates monitoring techniques
  • Production bottom hole system integrity monitoring
  • Intelligent completions
  • High gas rates wells completion
  • Multi-phase flow meters
  • Telemetry and tele-commands

Speaker 1: Jose Luis Molina, Repsol
Downhole Tubulars Integrity Monitoring

Speaker 2: Wilhelm Grudner, Petrobras
Intelligent Completions in Bolivia—General Approach and Lesson Learned

Speaker 3: Wilhelm Grudner, Petrobras
Intelligent Completions in Bolivia—General Approach and Lesson Learned


Session VIII: Completions Challenges and Lessons Learned (Part 2)

Session Chairpersons: Jose Luis Molina, Repsol, and Rene Arze, Schlumberger

Discussion continued from Session VII.

Speaker 1: Claver Guerra, Petrobras
Material Selection for Tubing and Liner of Gas Wells

Speaker 2: Marcelo A. P. Batocchio, Halliburton
Intelligent-Well Technology—Customized Solutions for Field Applications


Closing Remarks