Blow Out Prevention and Well Control July 5, 2009

BACKGROUND

* Merupakan salah satu masalah lubang sumur di operasi pemboran
* Menyebabkan timbulnya biaya ekstra yang cukup besar
* Berpotensi menyebabkan hilangnya sebagian atau semua fasilitas pemboran di lapangan karena kick dan blow out yang tidak terkontrol
* Menunda waktu produksi sumur (POP)

OBJECTIVES

* Mengetahui gejala kejadian kick dan blow out.
* Mengetahui kerugian akibat kick yang tidak terkontrol atau blow out.
* Mengetahui usaha pencegahan terjadinya blow out.
* Mengetahui cara mengidentifikasi mekanisme kick yang terjadi.
* Mengetahui kronologi terjadinya kick dan blow out dan cara penanggulangannya dengan Well Control.

PRE-REQUISITE

* Operator/ Sr. Operator/ Jr. Engineer/ Non Engineer
* Petroleum Engineers, Reservoir Engineers, Production Engineers
* Well Service Engineers
* Everybody or professionals who wants to better understanding and broaden their knowledge from the course subject

COURSE OUTLINE

1. Well Control Introduction

* Introduction to course
* Basic Concepts
* Liquid Hydrostatics

2. Gas Behavior and Hydrostatics

* Ideal Gases
* Effect of Temperature
* Real Gases
* Critical Temperature & Pressure
* Pseudo-Critical Temp. and Press.
* Gas Compressibility
* Gas Migration

3. Kick and Gas Migration

* Density of real gasses
* Equivalent Mud Weight (EMW)
* Wellbore pressure before and after kick
* Gas migration rate - first order approx.
* Gas migration rate - w/mud compressibility

4. Gas Solubility

* Solubility of Hydrocarbon Gasses in Oil
* Solubility of Non-Hydrocarbon Gasses in Oil
* Solution Volume Factors
* Oil Mud Recommendations

5. Pore Pressure Prediction

* Mud Weight and Pore Pressure
* Mud Weight and Fracture Gradient
* Normal Pore Pressure
* Subnormal Pore Pressure
* Abnormal Pore Pressure
* Origins of Pore Pressure
* Bulk Density and Porosity vs. Depth

6. Drilling Rate and Pore Pressure

* Forces on Subsurface Rock
* d-exponent
* dc-exponent
* Rehm and McClendon
* Zamora
* Comb’s Method
* Bourgoyne and Young’s Method

7. Other Indicators of Abnormal Pore Pressure

* Moore’s Equation - Drilling rate
* Gas in the Drilling Fluid
* Rock Sample Characteristics
* Use of Surge and Swab Pressure to determine Overbalance
* Changes in Drilling Fluid Properties
* Temperature Indications
* Hole Conditions

8. Logging While Drilling

* Sonic Travel Time
* Resistivity and Conductivity
* Eaton’s Equations (R, C, Dt, dc)
* Natural Gamma Ray

9. Fracture Gradients 1

* Allowable Wellbore Pressures
* Rock Mechanics Principles
* Hooke’s Law, Young’s Mudulus, Poisson’s Ratio
* Volumetric Strain, Bulk Modulus, Compressibility
* Triaxial Tests
* Rock Mechanics Principles (con’t.)
* Rock Properties from Sound Speed in Rocks’
* Mohr’s Circle
* Mohr-Coulomb Failure Criteria

10. Fracture Gradients 2

* Radial and Tangential Stresses near the Wellbore
* Stresses in Rock near Wellbore
* Effect of Anisotropic Stresses
* Onshore vs. Offshore Fracture Gradients
* Fracture Gradients in Inclined Wellbores
* Oil Based and Water Based Drilling Fluids

11. Fracture Gradients Determination

* Hubbert and Willis
* Matthews and Kelly
* Ben Eaton
* Christman
* Leak-Off Test (experimental)

12. Kick Detection and Control

* Primary and Secondary Well Control
* What Constitutes a Kick
* Why Kicks Occur
* Kick Detection Methods
* Shut-in Procedures
* Soft and Hard Shut-in
* Water Hammer

13. Off Bottom Kick

* Slugging of drillpipe
* Hole fill during trips
* Surge and Swab pressures
* Kick detection during trips
* Shut-In Procedures
* Blowout Case History

14. Control Pressures and Circulation Kill Techniques 1

* Shut-In Pressures
* Weighting Up the Mud
* Driller’s Method
* Wait & Weight Method

15. Control Pressures and Circulation Kill Techniques 2

* Wait & Weight Method
* Concurrent Method
* Annulus Pressure Profiles
* Kicks in Oil-Based Mud

16. Secondary Well Control Complications

* Volumetric Well Control
* Lubrication
* Complications During Conventional Kill
* Techniques to Reduce Annular Friction

17. Special Well Control Applications

* Underbalanced Drilling
* Well Control in Unconventional Hole Programs
* Casing and Cementing Operations

18. Equipments

* High Pressure Equipment
* Control System Equipment and Design
* BOP Inspection and Test Considerations
* Low-Pressure Equipment
* Equipment Arrangement: Design and Philosophy
* Casing
* Casing Heads and Spools
* Stack Equipment
* Choke and Kill Line Equipment
* Drillstem Control Equipment

19. Offshore Operations

* Equipment Used in Floating Drilling
* Operational Considerations in Floating Well Contr
* Shallow Gas Hazards
* Trends in Deepwater Drilling

Official Website: http://www.focustraco.com/index.php/tm-training-schedule/details/194-207005