Oil & Gas Horizontal Well



This course is to summarize the horizontal well technology. It include the example problems to illustrate the use of various theoretical solutions, it is also listed an overview of horizontal well technology and it is general introduction to the technology from reservoir, drilling and completion stand point. It will also deal with the pressure drop through a horizontal well and how important it is in the estimation of horizontal performance.

            Recent advances in drilling and completion have found in a rapid increase in the number of horizontal wells drilled each year around the world. A horizontals well, for some extent, is different from a vertical well, because it requires and interdisciplinary interaction between various professionals, such as geologist, reservoir engineers, drilling engineers, production engineers and completion engineers. This course mainly deals with reservoir and production engineering.


  1. An overview of horizontal well technology and a general introduction to the technolody from reservoir, drilling and completion standpoint.
  2. The reservoir engineering concepts and the application for horizontal wells. This is also include on wells spacing of horizontal wells.
  3. Steady state solution and the applications. It is also include the discussions of formation damage problems in horizontal wells and contains a discussion of slant wells. There are few cases where slant wells maybe more beneficial than horizontal wells.
  4. The influence of well eccentricity on productivity of a horizontal well. Well eccentricity represents a vertical distance between the horizontal wells location and the center of the pay zone. Though influence of the well eccentricity on productivity of a well I minimal, it will have a strong influence on the ultimate reserves for a horizontal well drilled in reservoirs with top of the gas or bottom of the water.
  5. Comparison between horizontal and fractured vertical wells. The discussion practical aspects of hydraulic fracturing of a vertical well, its advantages and the limitations. The chapter also includes the reasons for stimulating horizontal wells and calculation of productivities for fractured horizontal wells.
  6. Transient wells testing. In general, transient well testing is a highly mathematical subject. At the same time, it is also one of the most important and useful subjects to understand the well behavior in a given reservoir. It also include all the necessary mathematics and many concepts which are essential to interpret the behavior of a horizontal well.
  7. Pseudo-steady state solutions for vertical wells, fractured vertical wells and horizontal wells. It included available solutions for the partially perforated or partially open horizontal wells completed in solution gas drive reservoirs.
  8. Examines water and gas coning in vertical and horizontal wells. It outlines many of the available solutions for calculating water and gas coning behavior in horizontal and vertical wells. It also contains discussion of available field histories. The histories not only show successes but also the failure of horizontal wells in minimizing water and gas coning. The chapter also outlines benefits and risks associated with production testing of vertical wells to estimate the potential of horizontal wells.
  9. Looks at the application of horizontal wells in gas reservoirs. The horizontal wells are highly suitable for low permeability as well as high permeability gas reservoirs.
  10. Deals with the pressure drop trough a horizontal well and how important I is in the estimation of horizontal well performance.


Overview of Horizontal Well Technology

  • Introduction
  • Limitations of Horizontal Wells
  • Horizontal well applications
  • Drilling techniques
  • Horizontal well lengths based upon drilling techniques
  • Drainage area limitations
  • Completion techniques
  • Summary
  • Reference

Reservoir Engineering Concepts

  • Introduction
  • Skin factor
  • Skin damage for horizontal wells
  • Effective well bore radius, r’w
  • Flow regimes
  • Influence of areal anisotropy
  • References

Steady State Solutions

  • Introduction
  • Steady-state productivity of horizontal wells
  • Effective wellbore radius of horizontal wells
  • Productivity of slant wells
  • Comparison of slant wells and horizontal wells
  • Field histories
  • References

Influence of Well Eccentricity

  • Introduction
  • Influence of well eccentricity
  • Drilling several wells
  • Horizontal wells at different elevation
  • References

Comparison of Horizontal and Fractured Vertical Wells

  • Introduction
  • Vertical well stimulation
  • Types of fractures
  • Comparison of horizontal wells and finite conductivity fractures
  • Horizontal wells in fractured reservoir
  • Fractured horizontal wells
  • Summary
  • References

Transient Well Testing

  • Introduction
  • Mathematical solutions and their practical implications
  • Generalized flow regimes
  • Pressure response
  • Detailed well testing flow regimes
  • Pressure derivatives
  • Wellbore storage effects
  • Practical considerations
  • Summary
  • References

Pseudo-steady State Flow

  • Introduction
  • Generalized pseudo-steady state equation for vertical wells
  • Shape factors for vertical wells
  • Shape factors for fractured vertical wells
  • Shape factors of horizontal wells
  • Horizontal well pseudo-steady state productivity calculations
  • Inflow performance of partially open horizontal wells
  • Inflow performance relationship (IPR) for Horizontal wells
  • Solution gas-drive reservoirs
  • Predicting horizontal well performance in solution gas-drive
  • Reservoirs
  • References

Water and Gas Coning in Vertical and Horizontal Wells

  • Introduction
  • Critical rate definition
  • Vertical well critical rate correlations
  • Critical rate by production testing
  • Decline curve analysis
  • Water breakthrough in vertical wells
  • Vertical well post-water breakthrough behavior
  • Characteristics of water cut versus recovery factor plots
  • Water and gas coning in horizontal wells
  • Horizontal well breakthrough time in a bottom
  • Water drive reservoir
  • Breakthrough time for a horizontal well in a reservoir with gas
  • Cap or bottom water
  • Cone breakthrough time for horizontal well in reservoir with both gas cap and bottom water
  • Critical rate for horizontal wells in edge-water drive reservoir
  • Practical considerations
  • Field histories
  • Reference

Horizontal Wells in Gas Reservoirs

  • Introduction
  • Gas reserve estimation
  • Gas flow through porous media
  • Horizontal well application
  • Production type curves
  • Case histories
  • Summary
  • References

Pressure Drop Through a Horizontal Well

  • Introduction
  • Influence of high pressure drops
  • Remedies to minimize high wellbore pressure drop
  • Pressure drop through a horizontal well
  • Comment on fully developed friction factors
  • Pressure drop in curved wellbore section
  • Drilled wellbore sizes and liner sizes
  • Single-phase pressure drop through a horizontal well
  • Multi-phase pressure drop through a horizontal well
  • Summary of example result
  • Practical consideration


Team Konsultan PT Ganesha Inti Persada


3 Hari (dimulai pukul: 09.00-16.00)

INVESTASI (Tidak termasuk biaya akomodasi & penginapan)

  • Rp. 11.000.000, - / peserta (Jakarta,Bogor)
  • Rp. 11.000.000, - / peserta (Bandung)
  • Rp. 12.000.000, - / peserta (Yogyakarta,Malang, Surabaya,Semarang )
  • Rp. 14.000.000, - / peserta (Bali)
  • Rp. 14.750.000, - / peserta (Lombok)
  • US$ 4780 / peserta (Malaysia)


Lunch, sertifikat, Modul, Coffee Break, Training kit diselenggarakan di Hotel berbintang



0811-996-1224 (WA)


0812-9679-1324 (WA)



  • 24-26 April 2024, Bandung


  • 6-8 Mei 2024, Bali/ Yogyakarta
  • 15-17 Mei 2024, Semarang
  • 22-24 Mei 2024, Lombok/ Bandung
  • 28-30 Mei 2024, Jakarta


  • 5-7 Juni 2024, Malang
  • 12-14 Juni 2024, Surabaya
  • 19-21 Juni 2024, Medan/ Jakarta
  • 26-28 Juni 2024, Yogyakarta


  • 3-5 Juli 2024, Bandung
  • 10-12 Juli 2024, Palembang
  • 17-19 Juli 2024, Medan/Yogyakarta
  • 24-26 Juli 2024, Malang
  • 29-31 Juli 2024, Jakarta


  • 7-9 Agustus 2024, Yogyakarta
  • 14-16 Agustus 2024, Lombok/ Jakarta
  • 21-23 Agustus 2024, Batam/ Bandung
  • 28-30 Agustus 2024, Malang


  • 4-6 September 2024, Jakarta
  • 11-13 September 2024, Malang
  • 18-20 September 2024, Surabaya/ Bandung
  • 25-27 September 2024, Yogyakarta


  • 9-11 Oktober 2024, Jakarta
  • 16-18 Oktober 2024, Batam
  • 23-25 Oktober 2024, Bandung
  • 28-30 Oktober 2024, Surabaya


  • 6-8 November 2024, Lombok/ Jakarta
  • 13-15 November 2024, Bali
  • 20-22 November 2024, Surabaya
  • 27-29 November 2024, Yogyakarta


  • 4-6 Desember 2024, Bandung
  • 11-13 Desember 2024, Medan/ Jakarta
  • 18-20 Desember 2024, Makassar/ Yogyakarta


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