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907 Bains Street
Brookshire, TX 77423
Ph: 281 934 1500
Fax: 281 934 1600
 

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DRILL THROUGH EQUIPMENT AND RELATED SYSTEMS
 
5-DAY SUBSEA SEMINAR
(Brookshire, Texas)
 
Detailed Course Outline
 

 

Manuals provided during the seminar include the following:

  • "Drill Through Equipment" course manual
  • Industrial Fluid Power textbook
  • A PETEX primer can be supplied before the course, upon request

During the seminar, there are many references made to various standards and regulations. It would be greatly beneficial for each attendee to bring the following documents with them:

Primary:
  • API RP 53 3rd Edition, "Recommended Practices for Blowout Prevention Equipment Systems for Drilling Wells" (American Petroleum Institute).
  • API RP 16Q 1st Edition, "Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems".

Secondary:

  • API Spec 16A 3rd Edition, "Specification for Drill Through Equipment".
  • API Spec 16C 1st Edition, "Specification for Choke and Kill Systems".
  • API RP 16D 1st Edition, "Design of Control Systems for Drilling Well Control Equipment".
  • API Spec 16R 1st Edition, "Specification for Marine Drilling Riser Couplings".
  • API Spec 17D 1st Edition, "Specification for Subsea Wellhead and Christmas Tree Equipment".
  • API RP 64 2nd Edition, "Recommended Practices for Diverter Systems Equipment & Operations".

The basis of the seminar is knowledge gained from conducting over 1,800 rig assessments. Three topics are addressed with each component discussed. They are:

1) How it works, using cross sections
2) Lessons learned, what to look for, and
3) The solution

When specific equipment failures are discussed -- the solution is provided. It's less expensive to learn from the experience of others.

 

 

DAY 1:

 

INTRODUCTION
Seminar Basis and What's Different

  1. Safety in the "Cotton Gin"
  2. Understand WEST's information systems
  3. ITP's = "Inspection and Test Procedures" - information available
  4. Anomaly Data Base - Lesson's learned, so as not to be repeated
  5. "RigLore" - Engineering Bulletins and Product Alerts "at your fingertips"
  6. Where and when does downtime occur in deepwater drilling
  7. Standards to which we assess
  8. Direct and indirect costs (What does it cost to pull a stack ?)
  9. Risk analysis and how to minimize downtime

QUALITY MANAGEMENT

  1. Let's be a learning industry; product performance reports, reference API Spec 16A, API RP 53 ISO 9000; API Q1 program
  2. Document Control: O & M manuals, engineering bulletins and product alerts
  3. Operational management
  4. Why are the API quality systems not working? (API Q1, API RP 53 and API Spec 16A)
  5. Regulatory issues and industry standards
  6. What should your response be when they say "Certified"?

DRILL A WELL IN AN HOUR

1. Course Overview - drill a well in 1 hour
2. Wellheads, guide-bases and casing
3. Introduce floating drilling equipment

BOP CONTROL SYSTEMS, INTRO (Part 1)

1. Surface BOP Control System

A. Mixing System + cleanliness

B. Pumping System

C. Accumulator System

2. Subsea BOP Control Systems

A. Principle of Redundancy

B. Open/Block/Close Function

3. Introduction to Fluid Power Symbols

SURFACE MUD FLOW NETWORK

1. Systems

A. Choke and kill manifold

1. Requirements of API RP-53
2. API RP-53 design and installation instructions
    a. Size and pressure rating
    b. NACE MR-01-75 and hardness
    c. Remote, adjustable and fixed chokes
    d. Testing, Minerals Management Service (MMS) and API
    e. Buffer tanks and vent lines
    f. MMS guidance

B. Equipment failures: Equipment checks after taking a kick

1. Gates and seats from hydraulic chokes
2. Washed spools downstream of chokes
3. Manual choke wear characteristics
4. Flow targets: Purpose, maintenance and inspection

C. Mud gas separators (Poor boy degassers)

1. Theory of operation
    a. Atmospheric and the pressurized type
    b. Vertical vs. horizontal installation
    c. UK HSE requirements

D. Diverters

1. Purpose and application
2. Sequencing of valves, UK Den and API RP-53
3. Hughes KFDS & Hydril FS
4. Testing, API and MMS
5. Minimum vent line sizes, API, MMS, UK HSE and DNV

 

 

DAY 2:

 

DRILL THROUGH EQUIPMENT

1. Telescopic Joints and Riser

A. General System Description

B. Vetco Hughes and Cameron Telescopic Joints

1. Support rings
2. Packers, operating pressures
3. Pinning techniques - load limits and dropping BOP stacks
4. How spiders can collapse inner barrels
5. Safety precautions while running the BOP stack

C. Vetco, Cameron & Shaffer Riser

1. Dog-types and preload
2. Riser inspection and documentation
3. Cracking of the pins and boxes

D. Choke and Kill Pins

1. Colmonoy overlays: Hardness and abrasion resistance
2. Visual examination and surface finish
3. Why the box down/pin-up configuration
4. Problems associated with pressure testing

E. Flange-Type Connectors

1. API RP-2R: Preload and design stress considerations
2. Hydraulic bolt tensioning

F. Parting Riser and Dropping Stacks

1. Why the UK Den recommends 500 Ton elevators

2. API RP-53 Subsea Stack Arrangements

A. Minimum requirements, RP-53 and MMS recommendations

B. Overview of stacks and their components

C. Standard 6-foot guide-post radius

3. Riser Adapters, Transition Subs, Uniflex Joint Extensions

A. Upper retrievable wear bushings

B. Keyseating riser and annular BOPs

4. Ball and Flex Type Joints

A. Hughes CR-1 and DR-1 ball joints

B. Vetco and Oilstates flex joints

1. Operation and components
2. Limitations

5. Annular Preventers

A. Varco Shaffer, Hydril GK, GL and GX, Cameron Type D

1. Effects of wellbore pressure
2. Operating pressures/hook-ups
3. Theory of operation
4. API Spec. 16A requirements, CSO
5. Testing requirements of annular elements (sold
    separately) prior to delivery

B. Major Equipment Failures

1. Milling swarth in operating chambers
2. Corrosion caused by weep holes and dissimilar metals
3. Visual inspection and acceptance testing of packing
    elements, drift testing

6. Riser and Wellhead Connectors

A. Vetco & Cameron

1. Locking/unlocking forces
2.
Secondary unlocking chambers
3.
Connector preload and "Backdriving"
4. Predictive Testing

5. Over-stroking tests

7. Choke and Kill Stabs

A. Mechanical Stabs

1. Stab plate/receiver plate separation
2. Visual inspection and surface finish
3. Correct testing techniques

B. Cameron's Mini-Collet Connector

8. LMRP Choke and Kill Flex Piping

A. Hose, Flex Loops

1. Advantages/disadvantages
2. Re-certification and failure modes

9. Mandrels

A. Purpose

B. Load Transfer, Adjustment (Washed C&K Outlets
)

 

 

DAY 3:

 

10. CAMERON TYPE "U" and "UII" Ram-Type Preventers

A. Components, Operation and Sealing Characteristics

B. Operating Piston Modifications

C. Low Pressure Testing API RP-53

D. Bonnet Bolts and Seals

1. Bolt torque
2. Hydraulic tensioners
3. Seals

E. Shearing Blind Rams

1. Single piece shear rams - H2S compliance
2. API RP-53 and API specifications 16A Requirements

F. Emergency Plastic Packing Injection System

1. Advantages
2. Disadvantages

G. Hydraulic Stud Tensioning

1. Efficiency
2. Better sealing capabilities

H. Wedgelocks and Balancing Chambers

I. Major Equipment Failures

1. Ram shaft packing area corrosion
2. Wedgelock modifications
3. The benefits of operating piston liners


11. CAMERON TYPE "T" and "TL" Rams

A. Components, Operation and Sealing Characteristics

B. Bonnet Gasket insert

1. Replaceable gasket insert
2. External pressure collapse issue

C. Side Ram removal

1. Ram removal tray provided
2. PRC pistons relocated

E. ST Locks

1. Brake assembly and overhauling threads
2. Benchmarking & predictive testing

12. HYDRIL RAMS

A. Multi-Position Lock (MPL)

1. Clutch assembly and lock nut
2. Lockout testing

B. Hydraulic Operating Systems

1. Fluid hinges
2. Operating pressures

C. Rams and Ram Cavities

1. Shear and pipe rams - Piston sizes
2. Shear ram operating pressures
3. Variable bore rams
4. Replaceable top seals

D. Bonnets

1. Bolts and torque requirements
2. Rams shaft seal
3. Weep holes

13. VARCO SHAFFER "SL" RAMS

A. Poslock & Multi-Lock System

1. Adjustment
2. Testing

B. Ultralock Locking System

1. Ultralock I
2. Ultralock II, A, B & B w/ILF

C. Rams and Ram Cavities

1. Pipe, shear and variable bore rams
2. Cavity Inspection

14. Failsafe Valves

A. Cameron Type "AF", "DF", "FC" and "MCK"

1. Advancement and modification
2. Seat rings, seal rings and body bushings
3. Body bushings and upstream seals
4. Balancing stems - "What is a 'Failsafe' valve?"

B. WOM "Magnum" Valves

1. Review sealing technique
2. Advantages of upstream and downstream sealing

C. Failures modes

1. Plating separating from the gate material
2. Low-pressure testing problems
3. Spring Cartridge testing
4. McEvoy's sealant injection system

D. Riser test valves (fail open)

 

 

DAY 4:

 

BOP CONTROL SYSTEMS (Part 2)

1. Varco Shaffer/Koomey System Review

2. Hose and Hose Reels

A. Volumetric expansion and response time: RP-53 and NPD

B. Hose reel panel and its purpose

C. Review circuit

3. Control Pods

A. Double female concept

B. Regulators and SPM valves

4. Control Circuits

A. 2-Position circuit

B. 3-Position circuit

C. Increase/decrease regulator circuit

5. Control Panels and Their Correct Operation

6. Cameron "Modular" Introduction

A. Shear seal vs. poppet pod valves

B. Stinger retract and test feature

EMERGENCY RECOVERY SYSTEMS & ROVs

A. The ultimate service call - Palapa B1

B. Define the need for ERS

C. What types of ERS are available?

D. ROV capabilities & control panels

MOTION COMPENSATION OVERVIEW

1. Drill String, Riser and Guideline Tensioners

A. Theory of Operation

1. Wireline travel vs. piston stroke
2. Introduction to load variation

B. In-line and Crown Mounted Compensators

1. Vetco (in-line)
    a. Panel and controls
    b. Olmstead valve
    c. Air/oil bottle
2. Maritime hydraulics crown mounted compensator
    a. Comparison, in-line vs. crown mounted
    b. Basic features

C. Riser and Guideline Tensioners

1. Basics of operations: rod travel vs. wireline travel
2. Swept volume & load variation

 

 

DAY 5:

 

RING GASKETS AND GROOVES

1. Types and Characteristics and of Various Gasket Sealing Techniques

A. API Spec 6A

1. Groove, gasket identification
2. Gasket, groove specification
3. Inspection, tolerances and surface finish
4. Re-use of gaskets, API RP-53

B. Gasket/Groove Interactions

1. Moment resistance
2. Face-to-face contact between hubs and flanges
3. Well bore pressure energizing

C. Ring Gasket Types

1. API's R, RX and BX
2. Cameron's and Vetco's AX, CX and VX

D. "Washed-Out Ring Grooves"

1. Rotating connections and galling
2. Loss of bolt preload
3. Maintenance of bolted connections
4. BOP Mandrel/bumper frame adjustment (bending
    moment transfer)

THEORY AND CALCULATIONS

1. Theory and Calculations

A. Operating Ratios of Ram Type Preventers and Gate Valves

B. Torque/Preload and Behavior of Bolted Joints

1. Preload variables using torque
2. Hydraulic torque wrenches
3. Fastener identification:
    a. API Spec 6A
    b. ASTM Standards
4. Vibration loosening
5. Embedment relaxation & creep

C. Accumulators and Boyle's Law

1. Charging and gauging assemblies
2. API and NPD volume calculations
3. Surface and subsea requirements
4. MMS now references RP #53

D. Mechanics of Materials

1. Mechanics of materials
2. API/NPD requirements
    a. Charpy "V" Notch
    b. API requirements
3. Marine drilling riser and cracking - "Modulus of Resilience"

E. Hardness Testing

1. NACE MR-01-75: Micro and macro
2. Rockwell
3. Brinell
4. Vickers
5. Shore

"WHAT IS AN ACCEPTABLE PRESSURE TEST?"

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