C o n t a c t U s f o r S p e c i a l C o r p o r a t e R a t e N o w!

Transcription

1 DEEPWATER WELL CONTORL C o n t a c t U s f o r S p e c i a l C o r p o r a t e R a t e N o w!

2 Course Overview This course covers the key aspects of Deepwater Well Control through the media of:- 1) Lectures (the Trainer began his career 35 years ago and has worked on Well Control Projects Worldwide, on Drill Ships in South East Asia and has advised and taught many Operators & Drilling Contractors regarding Deepwater wells. He studied Blowouts at PhD Level and is IADC WellCap Plus Certified); 2) PowerPoints (written by the Trainer); 3) Videos; 4) Case history examples; 5) Teamwork exercises; 6) Macondo Deepwater Horizon Case History; 7) Other Case Histories. Provision is also made for delegates to discuss any aspect of deepwater well control and operations which are pertinent to their particular up-coming projects in order to secure well control avoidance and what to do with an influx should one occur. For each subject area, benefits of certain industry practices are covered in detail as well as why difficulties are encountered on the rig. New technologies available to the Industry are also covered e.g. MPD and IADC WellCap and IWCF will be referenced. Aims & Objectives By the end of the course, delegates will understand the key drivers behind successful Deepwater Well Control Planning & Operations so that the well to be drilled is a success first time and without incident. However, should an incident occur delegates ill lea hat s e ui ed to i g the ell safely a k u de control. Delegates will also benefit from reviewing previous deepwater well control events. Consultancy services can be provided both before the course (e.g. certain wells / problems can be looked at), during the course (e.g. certain problems can be reviewed) or after the course (e.g. advice / well review) should the delegates require. Who Should Attend Drilling Engineers; Senior Drilling Engineers; Drilling Superintendents; Drilling Managers, Integrated Services Drilling Contractors, IPM Service Companies, Derrick-men, Assistant Drillers, Drillers, Toolpushers, Mud E gi ee s, OIM s. Standards We follow the principles inherent within the following organisations regarding API Standard 53, OGP 476 (Recommendations for enhancements to well control training), IADC Well Cap and Well Sharp (specifically for barrier management and risk management) and IADC Deepwater Well Control Guidelines & various SPE Papers on well control events and DEA formulae:-

3 Your Dedicated Coach Michael Gibson (PhD) Overview easo ed p ofessio al ith 35 yea s o ld ide experience on drill-ships, semi-submersibles, tender-assist units, platforms, jack-ups and land rigs. Extensive experience both onshore and offshore in engineering and operations for Operators and Drilling Contractors on exploration, appraisal & development wells. Extensive risk assessment, advisory, planning and rig-site work experience ranging from Drilling Engineer through to Drilling Supervisor, Superintendent & Drilling Manager. Training Consultancy Training experience worldwide ranges across Engineering & Operations Advisor to Operators, Drilling Contractors and Service Companies both in-house and public in the following areas :- HPHT Stuck Pipe Prevention & Fishing Operators, Drilling Contractors, Banks & Insurance Companies worldwide re Drilling & Field Development, Risk & Blowouts Hazard Analysis Offshore Operations Deepwater Well Engineering Deepwater Operations Technical Advisor for HPHT Developments Directional Drilling Horizontal & Multilateral Wells Well Control Technical Advisor for Deepwater Accelerated Drilling Programmes for Drilling Contractors Graduate Drilling Engineering for Operators Optimised Drilling Practices Well Planning & Engineering Well Construction Well Control (Advanced, Understanding, Deepwater & HPHT) Operations Project Project Manager for HPHT Field Development; Standard Field Development Production Optimisation Risk Mitigation Brownfield Re-development Deepwater Well Control Management Systems

4 DAY ONE SECTION 1: WELL CONTROL REVIEW During this Introductory Section we shall review the following:- SECTION 2: CAUSES OF KICKS & INDICATORS During this section we will look at trapped and reservoir pressures and also induced (e.g. swabbed pressures) along with those indicators which may indicate we have taken a kick. SECTION 3: SHUT-IN PROCEDURES 6 th Generation ultra-deepwater semisubmersible (Courtesy of Maersk) Definitions Primary Well Control Where the constant comes from Temperature / Mud Gradients Porosity, Permeability, Geology & Overburden Formation Pressures, Reservoirs Hydrostatic Pressure, Casing Shoe Pressure Dynamic Pressure & APL Slow Circulating Rates Kick Definitions Kick Pressures: Shut-In Conditions Trip Tank Casing Capacity Volumes, Capacities, Displacements & Calculations Casing Joint & Float Failure During this section we will look at the two ways of shutting-in a well: - soft shut-in and hard shut-i a d hy it s ad a tageous to utilise the hard-shut-in method. SECTION 4: WELL INTEGRITY TESTING LOT s & FIT s During this section we will look at the key differences between Leak-Off Tests and Formation Integrity Tests. In particular we will look at: - Methodology Maximum Mud Weight MAASP and what it means

5 DAY TWO SECTION 5: RISER MARGIN During this section we will look at what riser margin is and the following:- How to carry out the calculations Maximum Mud Weight Riser margin contingencies Riser System Semi-submersible Rig Apart from the loss rate, we also look at the different types of LCM that can be pumped as well as Gunk Plugs and Cement Plugs. SECTION 8: SHALLOW GAS & DIVERTING Shallow gas can have the effect of making the semisubmersible or drill-ship unstable, with the possible risk of capsizing. There is also the risk of explosion. This section looks at how to prevent shallow gas blowouts from occurring, what ideal diversion procedures and practices should be and what safety measures should be taken on-board the rig and onshore. The advantages of drilling riser-less are also covered. SECTION 6: CHOKE LINE FRICTION During this section we will look at what choke line friction is and the following:- Definition The 3 ways of finding Choke Line Friction Initial Dynamic MAASP & Initial Dynamic Casing Pressures SECTION 7: LOST CIRCULATION This is an important area not just because of loss of hydrostatic pressure (which could very well lead to an influx) but also because lost circulation is often asso iated ith stu k pipe. A d you do t a t to e stu k he you e a o -going influx event. We look at: - Seepage Losses Partial Losses Intermediate Losses Severe Losses Total Losses Sedco 700 Shallow Gas Blowout Offshore Nigeria SECTION 9: KICK TOLERANCE Kick tolerance is sometimes a difficult subject to understand. There are two ways of looking at kick tole a e. O e is f o the pe spe ti e of Ki k I te sity, i.e. ho u h a the ud e eighted up (to kill the well) without breaking down the casing shoe and the other is how many barrels of influx can be taken and circulated out without breaking down the casing shoe. We will look at both of these areas during the course, along with: - The two critical locations for the influx Key factors Calculations

6 DAY THREE SECTION 10: SUBSEA WELL CONTROL SHEETS & FORMULAE During this section we will review the industryapproved subsea well control sheets and formulae. Schematic of Subsea BOP Stack The sheets cover all applicable formulae and steps taken throughout the well kill process. Copies of the well kill sheets and formulae sheets will be given to delegates courtesy of soft copy for use during the course and for later use on board the rig. SECTION 11: WELL KILL METHODS Du i g this se tio e o e the D ille s, W & W, Concurrent, Volumetric & Bullheading Methods of killing a well with associated key areas. Deepwater Well Control Issues Shut-in Procedure whilst drilling and tripping Review of U-tube principle The effect permeability has on shut-in pressure build-up Shut-in pressures SECTION 11: WELL KILL METHODS (continued) Gas Migration Overview of kill methods & pump start-up Selecting the kill rate Mud Gas Separator Overloading Maximum Kill Rate vs. Choke Pressure CR s Choke Line Friction Pressures Gas-Mud swap-out BOP Separator Effect Keeping the BHP constant when mud enters the choke line The effect of CLF on MAASP Gas in the Riser Stack Gas Clearing The D ille s Method of esto i g the ell The Weight & Wait Method of restoring the well The Concurrent Method of restoring the well Bull-heading The Static Volumetric Method The Dynamic Volumetric Method Gas Lubrication Stripping We will also look at the advantages and disadvantages of each method. SECTION 12: PRESSURE CHANGES WHEN PUMPING KILL MUD DOWN STRING This section is actually a worked example. During this exercise we will look at pump problems and reducing pump speed from 30 SPM to 25 SPM and the resulting dynamic pressure.

7 DAY FOUR SECTION 13: TRAPPED GAS IN BOP STACK During this section we will look at how to remove trapped gas in the subsea BOP stack. SECTION 14: KEY DEEPWATER CONSIDERATIONS (Continued) Key practices to prevent the well from unloading Situations which can mask a small influx Rig & BOP considerations Fingerprinting Subsea BOP Stack SECTION 14: KEY DEEPWATER CONSIDERATIONS During this section we will be focusing upon those deepwater considerations which are key to deepwater well control. Why fracture gradients are typically weaker on deepwater wells (explanation and demonstrative calculation) Shallow water flow / mitigating SWF problems / SWF procedures Riser disconnect calculations / Riser margin Deepwater diverter considerations Weak sea-bed / Site evaluation Using trends to identify downhole situations Changes in Mud Weight, PV & YP with changes in temperature Temperature profiles Gas behaviour in WBM & OBM Swab Kick Phase Behaviour Undetected Kicks Influx Volume vs Pit Gain (WBM & OBM) Example of Fingerprinting: Trip Tank on Connections SECTION 15: HYDRATES In this section we will discuss how and why hydrates fo, hy e do t a t the a d ho to p e e t their formation (drilling fluid additives, temperatures, glycol injection etc.). Hydrate formation possible within BOP stack upon cessation of circulation

8 DAY FIVE SECTION 16: FORMATION CHARGING In this section we will look at the causes of formation charging, how and why it happens, what apparent losses mean, what apparent gains mean and how to determine whether we have an influx or if the formation has simply been charged. SECTION 17: UNDERGROUND BLOWOUTS Underground blowouts are potentially catastrophic, particularly if formation strength is weak throughout large intervals. They can take months to solve, and with some latest generation rigs / drill-ships costing a s all fo tu e o a daily asis, they e the last thi g that anyone needs, particularly in the new era of low oil prices. Throughout this section we look at the following: - Type 1: High Pressure ascending to Low Pressure Zone & breaking down the formation Type 2: High Pressure descending to Low Pressure Zone & breaking down the formation Indicators Kill Considerations Kill Methods (e.g. Plugs, Dynamic Kill) Offshore Teamwork Teamwork Exercise 1: Deepwater Shallow Gas Blowout Case History Teamwork Exercise 2: Deepwater Underground Blowout Case History Teamwork Exercise 3: The Macondo Deepwater Horizon Blowout Case History Each team will present their findings following their studies of the Case Histories. SECTION 18: TEAMWORK EXERCISES Teamwork is a crucial factor in the preventing and solving of Deepwater Well Control Events. Just like we do offsho e, e e goi g to o lude the ou se through a number of Teamwork Exercises.

9 Independent Drilling Engineering AssociateS IDEAS (Independent Drilling Engineering AssociateS) is a thinking company. It focuses its in-depth and holistic knowledge, breadth of experience and expertise onto operators, drilling contractors and service o pa ies drilling engineering and related work requirements, to provide top quality fast turnaround bespoke work packages on either an ad-hoc or long term basis, 24 hrs per day / 365 days per year, worldwide. Through applying creative thought, ingenuity, experience, integrative life-cycle considerations, fully focused dedication and commitment to problem-solving, IDEAS aim to provide the most professional, solution-oriented, cost-effective drilling engineering and related services anywhere around the world at any time. Objectively. Independently. Quickly. Contact us today for In-House Drilling Solutions to maximise safety, efficiency, performance, productivity & minimise cost! For more information, please us at info@wellideas.com IDEAS CREATE SOLUTIONS

10 Contact Details I am interested to register for Deepwater Well Control I would like to contact IDEAS for In-House Training Solutions I would like to contact IDEAS for In-House Consultancy Solutions Other enquiry Name : Job Title : Company : Department : Mobile / DID : Independent Drilling Engineering Associates Singapore 18 Sin Ming Lane #08-26 Midview City Singapore Tel: info@wellideas.com Website: Independent Drilling Engineering Associates Scotland 1 Mill Court Gourdon Montrose DD10 0NL Scotland, United Kingdom Tel: info@wellideas.com Website: IDEAS CREATE SOLUTIONS