Hands-on Rig Mechanical Inspector

Hands-On land Rig Equipment inspector

Hands-On land Rig Equipment inspector

The  objective  is  to build and  enhance the  candidates’ knowledge  of rig equipment and    maintenance   through     compliance   with   industry   standards,   regulatory requirements and  safe working practices. Candidates will learn to apply the relevant standards and  requirements to verify rig equipment condition, improve safety and potentially reduce accidents.

To  ensure optimum  rig  performance,  reduce  downtime  and   maintain  personnel safety, a robust planned maintenance and accurate inspections are essential.

The  drilling Rig Equipment Inspection (REI) course focuses on  the  most common equipment  deficiencies  and   explains  the   working  principles  of   major   drilling equipment using detailed examples from our technical inspection database. The REI course consists of interactive virtual classroom training and allows group participation and discussion.

 Course inclusions:

  • Text book containing the course material.
  • Checklist for major equipment to assist with inspection techniques.
  • Examples of good and bad practices including photos.
  • Presentation of improvements and new designs of drilling equipment.

Course Objective:

  • Independently carry out a basic (visual) rig inspection
  • Describe the main inspection criteria for major equipment
  • Identify major items that have an impact on the safety and operation of a rig
  • Recognize the indicators of the overall condition of a drilling rig
  • List the relevant standards (such as API) and their implications for drilling equipment
  • Understand the basics of EX equipment installed in hazardous areas
  • Evaluate basic maintenance and inspection procedures on the rig to identify compliance with good working practices and industry standards

 Training Outlines:

Chapter 01 - Drilling Equipment

  • Mast / Derrick

A derrick is a lifting device composed of a tower or a guyed mast, such as a pole, which  is hinged freely at the bottom and which  is sometimes controlled by four lines to keep the derrick straight. The derrick allows the rig to pull/lower three drill pipes (called a stand) at the same time.

  Crown and Travelling Block

A crown block is a device situated at the top of an oil rig or derrick. It sits  on  the crown platform,  which  is  a steel  platform  located along  the upper portion  of  the rig.  The  crown block   works in conjunction with a similar component, the traveling block,  which  is positioned  just  below  the crown platform.  Together, these  two systems are known as the block  and tackle.


Drawworks are powerful electrically-driven winches that lower and lift the drill string and casing. They also raise the derrick on  land rigs using special raising lines. Some drawworks on older land rigs also drive the rotary table using a heavy duty chain drive.

 Drawworks Auxiliary Brakes

Extra auxiliary braking system for better control of the drawworks. There are four types: Eddy  current (elmagco), Friction  disc, Universal disc and Hydromatic brakes.

The eddy current and friction disc brakes are coupled to the drawworks main shaft.


  • Top Drive

A top  drive is a mechanical device on  a drilling rig that provides clockwise torque to the drill string to facilitate the process of drilling a borehole. It is an alternative to rotary table. It is located at the swivel place and allows a vertical movement up  and down  the derrick.


  • Independent Swivel

An independent swivel is a rotary tool that is installed in the hook at the bottom of the travelling block  and allows the drill pipe to rotate while supporting the weight of the drill string. It also allows the passage of mud  through the drill pipe at the same time.


  • Rotary Table

A rotating table rotates and supports the drill string when connections are to be made for the drill string or the casing. It is AC or DC electrically-driven or driven from the drawworks. Some rotary tables cannot be used to rotate the string; instead the top drive is used. Some rotary tables are hydraulically-driven to rotate with a low torque and low speed only.


Chapter 02 - Mud Processing Equipment

  • Mud Pump

Mud    pumps   are   large   reciprocating    piston/plunger devices  that are specially  designed  to  circulate  drilling fluid (mud) under high  pressure down  the drill string and back up the annulus.


  • Mud System

The mud  system is a system of shakers, mud  centrifuges, mud  cleaners, mud  desanders and mud  esilters designed to  circulate drilling  fluid  to  the drill bit  and back to  the surface.  A  mud   system  has  two   sections.  The  high pressure section delivers mud  from the pumps to the drill bit.

The low pressure section sends mud  back to the surface for treatment and supplies mud  from the mud  pits back to the  main  pumps  using  a large  number  of  centrifugal pumps. A vacuum degasser  removes small  particles  of gas from the mud.



Chapter 03 - Diesel Engine, Air Systems, Refrigeration & Air Conditioning

  • Diesel Engine

The diesel engine is a high compression internal combustion engine that drives the main AC or DC generators, which  provide power for the rig.


  • Air Systems, Refrigeration and Air Conditioning

Rig   air  compressors  on   the  rig   are  used  to   supply compressed air to several auxiliary equipment and functions.  Usually  the systems build  on  drilling  rigs  are

120  psi systems fitted with  several air receivers for  the storage of compressed air. The air from the compressors is used for the operation of the rig floor winches, start air for the engines, operation of the air operated BOP hoist, supply air for the bulk transfer system, etc.


Chapter 04 - Electrical Safety

  • Electrical Safety

Electrical equipment on  drilling rigs have to comply with safety standards to  protect the rigs from  ignition  of free flowing gas from the wells. The level of safety depends on the  zone  or   area  in   which   the  electrical  equipment operates.


Chapter 05 - Safety Equipment

  • Safety Equipment

When talking about safety equipment one should split it up into four (4) main categories.

  • Firefighting Appliances.
  • Fire and Gas Detection Systems.
  • Drilling Safety.
  • Hazardous Materials.
  • Firefighting Appliances

Firefighting appliances consist of both  fixed systems and portable equipment. In addition to fire hoses and portable fire  extinguishers  fire  resistant  protective  clothing, respirators and fire doors are also included.

  • Fire and Gas Detection Systems

Fire detectors sense one or more of the products resulting from fire, such as smoke, heat, infrared and / or ultraviolet light radiation, or gas. Fire detection systems include automatic fire detection, fire alarms and fire suppression activation.

 Drilling Safety

This  section  covers all  the equipment  needed to  ensure that the operations involved in the process of drilling  are safe.  This  includes  anti-skid  matting  around the  rotary table,   safety   lockers   in   areas   with   specific   material handling, safety signs and the installation of proper guards and barriers needed in the specific areas.

To ensure the operations on the rig are conducted safe and do   not   interfere  with   other  operations  on   the  rig,   the industry has incorporated the safety management system (permit to  work)  and other procedures to  ensure all the work   is  done  in  a safely  manner  (PTW, isolation,  risk assessment, Toolbox meetings, etc.)

  • Pollution Control

The pollution control checklist includes equipment present at the rig site that prevents pollution to  the environment. Maintaining pollution control depends on location and local legislation  and the use of  oil-based mud   requires  many extra pollution control measures.


  • Hazardous Materials

The handling  of  hazardous materials  is  an almost  daily routine   on    drilling   rigs   and  therefore   requires   extra attention. Special PPE should to be provided for handling hazardous  materials  and  hazardous  signs  and  MSDS sheets need to  be made available for  all chemicals and substances used in those areas.

 Chapter 06 - Well Control Equipment

  • Ram Type Preventer

A ram-type preventer is part of the well control equipment   integrated   into   the  BOP.  It   seals   the annulus  of  the well,  seals  around the drill  pipe  or performs a Complete Shut Off (CSO) if no drill pipe is inside the hole. Rams can hang off the drill string and shear the drill pipe.


  • Annular Preventer

An  annular preventer seals the annulus of  the well, seals around any pipe-casing or performs a CSO if no

drill pipe is inside the hole. It is part of the well control equipment integrated into the BOP. The hydraulic closing pressure drives a piston upwards, which  forces the sealing element upwards and inwards to  form  a seal around the pipe in the hole.


  • Choke Manifold

The choke and kill manifold is a collection of pipes and valves that restricts or  stops pressure/flow and form part of the BOP system.

Some land rigs have a simple choke manifold. Modern rigs  and  MODUs use  a  selection  of   gate  valves integrated  into  a choke and kill manifold.  Both  types are accompanied by  a mud/gas separator and vent lines.   Upstream  of   the  chokes,  the  manifold   is connected to  the BOPs. Downstream of the chokes, vent lines are routed to the mud/gas separator and the flare pit on land rigs or routed overboard on MODUs.



The BOP HPU (Hydraulic Power Unit) consists of three hydraulic circuits made by a set of accumulator bottles and  hydraulic  pumps. These  are  the  accumulator circuit, the manifold circuit and the annular BOP circuit. Hydraulic  power is  stored in the accumulator  bottles and this provides pump capacity to  keep the accumulator   system   under   pressure.   The   HPU provides control valves to select different functions of the BOP equipment.


Chapter 07 - Mechanical Handling Equipment

  • Hydraulic Power and Pipe Handling Equipment

A hydraulic power unit  (HPU) provides power to  the pipe-handling  equipment.  These include  HPUs, iron roughnecks, pipe-handling  system and catwalk machine.


  • Rig Floor Winches

Winches are air or  hydraulically driven lifting devices that lift heavy equipment  and sometimes  personnel (man-riding winch).

  • Lifting and Handling Equipment

API RP 8B gives guidelines and establishes requirements for inspection, maintenance, repair and remanufacture of items of hoisting equipment used in drilling and production operations, in order to maintain the serviceability of this equipment.


  • Crane

A crane is  a machine  for  raising,  lowering  and revolving heavy equipment. They are used on land rigs  and  MODUs (marine  cranes), and may be driven electronically, hydraulically or with a diesel engine.   They  can  also   lift  heavy  equipment between rigs and supply boats on  MODUs and assist in building  up land rigs on new locations.



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 71-75 Shelton Street, Covent Garden, London.




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