Jack Up Offshore Crew and Job Description

Jackup Mobile drilling rig (MODU) used in offshore drilling. Jackup rigs stand on the ocean floor with their hull and drilling equipment elevated above the water on connected leg supports. Jackup rigs are generally preferred over other rig types in water depths of 400 feet or less, primarily because jackup rigs provide a more stable drilling platform with above water blowout prevention equipment.

Jackup offshore Crews work 12 hours shifts and ussually change at 6:00 AM/PM, individuals with no onboard releif are on call 24 hours per day but ussually only work 12 hours per day. 

Following Jackup Full crews positions and job responsibilites. 

1. Offshore Installation Manage (OIM) 

OIM in charge of all activities and legally responsible for the rig. 

2. Senior/Day Tool Pusher 

Position in charge of drilling activities and directing personnel that support the hole making activities on the 

rig.

3. Night Tool Pusher

Similar duties to day tool pusher but works at night and ussually subordidnate to the Day toolpusher.

4. Driller, 4 on/off

In charge of the drill floor, drill crews, well progress and reports to the Tool Pushers.

5. Assistan Drillers, 4 on/off

Assist Driller, in charge of drill floor when driller is not present, assists driller in his duties. 

6. Derrickman, 4 on/off

In charge on trips in and out the well racks pipe in the derrick at the monkey board level and also assists 

with mud solids equipment and monitoring mud condition. 

7. Floorman, 16 on/off

In charge supervised by the driller and works primarily on the drill floor, substructure and with drilling 

tools. 

8. Crane Operator, 4 on/off

In charge of operates the rig's cranes and supervises the roustabout crews. 

9. Roustabout, 8 on/off

In charge of performs manual labor such as painting, unlloading boats, carrying supplies to store rooms 

and other manual labor under the direction of the Crane operators.

10. Mechanic, 4 on/off

In charge of all rig mechanical equipment but particularly engines. 

11. Assistant Mechanic, 2 on/off

In charge of splits tours between two hitches on mechanics. Aids in mechanic's work and is in training. 

12. Motermen, 4 on/off

In charge primary duty is to monitor and attend the engine room. reportes to the mechanic. 

13. Electrician/Electronics Technician, 4 on/off

In charge of all rig electrical and electronic equipment and their maintenance. 

14. Asisstant Electrician, 2 on/off

In charge of splits tours between two hitches of electricians. aids in electrician work and is in training, 

reports to lead electrician. 

15. Welder, on/off 2, 

In charge of welds plate and peipe as necessary for drilling contractor and operator. 

16. Materialsmen, on/off 4

In charge handles materials, data entry for maintenance, purchasing, inventory, etc. 

17. Communications, on/off 2.

In charge of communications. 

18. Barge Engineer, on/off 2

In charge of the marine equipment and its oepration, in charge during rig moves and jacking. generally the 

maintenance crews and specialist report to the barg engineer. 

19. Catering/Camp Boss, on/off 2

In charge of hotel function on rig such as food, laundry, etc. 

20. Cooks, on/off 4.

In charge of preparing food for crews. 

21. Galley Hands, on/off 20

In charge of helps with food, cleans rooms, laundry etc. under the camp boss. 

Total for basic complement 98 crews.

Image courtesy of Maersk Drilling 

 http://offshorecrews.com/how-the-stuff-work/jack-up-offshore-crew-and-job-description

Offshore Oil Rig Hierarchy.

Offshore Drilling Contractor has developed comprehensive management system, the most senior person on the Drilling Rigs is Offshroe Installation Manager (OIM) who is by the law, the master or captain of the vessel. The OIM is person who responsible for all departements, including:

• 1. Maintennance
• 2. Marine
• 3. Drilling 
• 4. Rig Administration

1. Maintenance

The Maintenance section is responsible for the maintenance and repairing of the machinery and drilling equipment on board. The section also overlooks all electrical operations on board and assists with installations of third party equipment.

Maintenance Crews:

• Chief Mechanic
• Chief Electrician
• Mechanic
• Electrician
• Assistance Mechanic
• Assistance Electricrian
• 2nd Engineer (Drilling Ship)
• 3rd Engineer (Drilling Ship)
• Motorman
• Welder
• Chief Painter
• Painter

2. Marine

The Marine section handles rig moves and operates the Dynamic Positioning system. It is also responsible for crane, anchor, ballast and deck operations as well as all control room activities, fabric maintenance and helicopter landings and takeoffs.

Marine Crews:

• Barge Master (expat included)
• Assistant Barge Master
• Deck Supervisor/Deck Pusher
• Crane Operator
• Assistan Crane Operator
• Lead Roustabout
• Roustabout
• 2nd Officer (Drilling Ship)
• 3rd Officer (Drilling Ship)
• AB Seaman (Drilling Ship)

3. Drilling

The Drilling section is responsible for all work related to the drilling operations itself; running and cementing of casings, tripping operations and controlling the actual drilling operation by using cyber equipment.

Drilling Crews: 

• Geologist
• Directional Driller
• Drilling Superintedent
• Rig Manager
• Senior Tool Pusher/Night tour Pusher
• Rig Mechanic
• Rig Electrician
• Driller/Assistan Driller
• Derrickhand
• Floor Man

4. Rig Administration

The Administration section handles all the practicalities that make the rig function as a workplace. This includes arranging transport to and from the rig, ensuring emergency preparedness and treating personnel when experiencing health issues.

Rig Officers:

• Safety Officer
• HSE assistan
• Medic
• Radio Operator
• Interpreter
• Material Man
• Store Keeper
• Catering Personnel
• Camp Boss

Image courtesy of Maersk Drilling 

http://offshorecrews.com/how-the-stuff-work/offshore-oil-rig-hierarchy

DRILL SHIP

The drillships is one of Mobile offshore drilling units (MODUs, pronounced "moe-dooz"). which popular in the late 1950's to the late 1960's. 

Drillships are differentiated from other offshore drilling units by their easy mobility. While semisubmersible rigs can also drill in deep waters, drillships are able to propel themselves from well to well and location to location, unlike semisubs, which must rely on an outside transport vessel to transfer them from place to place.

A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In most recent years the vessels are use in deepwater and ultra-deepwater applications, equipped with the latest and most advanced dynamic positioning systems.

Drillships are specially built seagoing vessels that also drill in waters as deep as 12,000 feet. Drilling equipment is installed on the deck, with the derrick normally placed in the middle of the ship. The well is drilled through an opening (called a "moon pool") that extends to the water's surface below the derrick. 

Because of their cargo-carrying capacity and exceptional mobility, drillships are especially useful for drilling exploratory wells. Although they are not as stable as semisubmersibles in rough water, they can be moved from location to location much faster. They maintain their position through mooring or dynamic positioning systems.

The drillship can be used as a platform to carry out well maintenance or completion work such as casing and tubing installation, subsea tree installations and well capping. Drillships are often built to the design specification to meet the requirements set by the oil production company and/or investors.

http://offshorecrews.com/how-the-stuff-work/drillships

OFFSHORE CREWS

An Offshore Platform rig is a large structure with facilities to drill wells, to extract and process oil and natural gas, or to temporarily store product until it can be brought to shore for refining and marketing. In many cases, the platform contains facilities to house the workforce as well.

An Offshore drilling unit operate by professionals Crew and management system are often the real determining factor concerning MODU performance and safety. This is often overlooked during the flurry of cost analysis, equipment evaluation, operating expenses assessment, and number crunching during bid analysis and MODU selection. It is often said that the low bid does not always give the best performance. A complete “hard” (equipment) and “soft” (crew, management, and safety) analysis must be done to make the best decision.

These policies and procedures should be reinforced throughout the personnel hierarchy, from the chief executive officer to the roustabout on the rig, in order to have a successful and well-performing organization and rig operation.

The staffing and organization of a MODU vary with each drilling contractor, operator, and country, and are controlled by classification and registration requirements. The most senior person on the MODU is usually the offshore installation manager (OIM) who is, by law, the “master” or “captain” of the vessel. The OIM is responsible for all departments, including:

• Drilling
• Maintenance
• Marine
• Auxiliary services
• Safety

The following are personal who working in the offshore platform:

1. OIM (offshore installation manager);

2. Operations team leader (OTL);

3. Offshore operations engineer (OOE) who is the senior technical authority on the platform;

4. PSTL or operations coordinator for managing crew changes;

5. Dynamic positioning operator, navigation, ship or vessel maneuvering (MODU), station keeping, fire and     gas systems operations in the event of incident;

6. Automation systems specialist, to configure, maintain and troubleshoot the process control systems    (PCS), process safety systems, emergency support systems and vessel management systems;

7. Second mate to meet manning requirements of flag state, operates fast rescue craft, cargo operations, 8. Fire team leader;

9. Third mate to meet manning requirements of flag state, operate fast rescue craft, cargo operations, fire      team leader;

10. Ballast control operator to operate fire and gas systems;

11. Crane operators to operate the cranes for lifting cargo around the platform and between boats;

12. Scaffolders to rig up scaffolding for when it is required for workers to work at height;

13. Coxswains to maintain the lifeboats and manning them if necessary;

14. Control room operators, especially FPSO or production platforms;

15. Catering crew, including people tasked with performing essential functions such as cooking, laundry       and cleaning the accommodation;

16. Production techs to run the production plant;

17. Helicopter pilot(s) living on some platforms that have a helicopter based offshore and transporting      workers to other platforms or to shore on crew changes;

18. Maintenance technicians (instrument, electrical or mechanical).

19. Fully qualified medic.

20. Radio operator to operate all radio communications.

Incidental personnel

Drill crew will be on board if the installation is performing drilling operations. A drill crew will normally comprise:

1. Toolpusher
2. Driller
3. Roughnecks
4. Roustabouts
5. Company man
6. Mud engineer
7. Motorman
8. Derrickhand
9. Geologist
10. Welders and Welder Helpers

Well services crew will be on board for well work. The crew will normally comprise:

1. Well services supervisor
2. Wireline or coiled tubing operators
3. Pump operator
4. Pump hanger and ranger

References:

http://en.wikipedia.org/wiki/Oil_platform

image courtesy: US Coast Guard FB Pagehttp://offshorecrews.com/how-the-stuff-work/offshore-crews

The Largest Offshore Gas Platform - The Troll Field

The Troll field is the world's biggest subsea development with regards to the number of subsea wells. operated by Statoil. The Troll start production on 1995, which located in the northern part of the North Sea, approximately 65 kilometres west of Kollsnes, near Bergen in Norway. 

The Troll Field history: 

1986 - Norske Shell was responsible for the first gas development phase on Troll, which received a green light from the Norwegian parliament.

1995 - Troll B entered production

1996 - Statoil took over as operator for Troll Gas from Norske Shell

1996 - Contractual gas deliveries began flowing from the field to continental Europe under the Troll gas sales agreements via the Zeepipe Gas Pipeline

2002 - ABB win contract for power system and compression module

2008 - Aibel wins a contract for new living quarters modules for Troll A platform

2012 - Temporary shutdown of Troll C

2014 - Compression modules added to Troll A

The Troll Platform Dimensions

The Troll A platform has an overall height of 472 metres (1,549 ft), weighs 683,600 tons (1,2 million tons with ballast) and has the distinction of being the tallest structure ever moved by mankind. 

The platform stands on the sea floor 303 metres (994 feet) below the surface of the sea and one of the continuous-slip-formed concrete cylindrical legs (the leg containing the import and export risers) has an elevator that takes over nine minutes to travel from the platform above the waves to the sea floor. 

The walls of Troll A's legs are over 1 metre thick made of steel reinforced concrete formed in one continuous pour (See Slip forming) and each is a mathematically joined composite of several conical cylinders that flares out smoothly to greater diameters at both the top and bottom, so each support is somewhat wasp-waisted viewed in profile and circular in any cross-section (see picture at right). 

The concrete legs must be able to withstand intense pressure so are built using a continuous flow of concrete, a lengthy process that takes 20 minutes per 5 cm laid.

The field contains 40 per cent of the total gas reserves on the Norwegian continental shelf and is also one of the largest oil fields on the continental shelf.

The Troll field is the world's biggest subsea development with regards to the number of subsea wells.

The Troll A concrete deepwater structure is the world’s largest natural gas production platform at 473 meters tall and weighing 1.2 million tons.

It is also the tallest structure ever to be moved by mankind.

At peak production the field produced 400,000 bpd

Gas is delivered to Belgium via the Zeepipe Gas Pipeline after processing at the Kollsnes Gas Processing Plant in Norway

Following the Contractors who working on the Troll project:

GE Oil & Gas: Designed, built and installed the original Troll B subsea production system

Aker Solutions:

Six subsea trees and a tool package

38 kilometres of umbilicals

Hyundai Heavy Industries: Construction of Troll C floating platform

Emtunga:

Troll A - Pre-engineering, Pre-compression Power Transformer Modules

Troll A - Additional accommodation

Aibel:

Area preparation, installation and integration of new living quarters modules for Troll A platform

Study contract for conceptual development of the Troll A 3rd & 4th compressor trains

Upgrading the Troll A-platform with a new compression module, utility module and in addition a new electro module for receiving electricity from ashore

ABB:

Engineering, procurement, construction and installation offshore of a 4000-ton gas compression module

Supply of an offshore power transmission system

Electric drive system for two pre-compression units for Troll A

Two high-voltage direct current (HVDC) power transmission systems, including HVDC converters and subsea direct current cables to provide reliable power to the offshore equipment from the shore

Jotun: Painting Troll A - Jacket, Deck, Heli-deck, Topside

World records

In 1996 the platform set the Guinness World Record for 'largest offshore gas platform'.

In 2006, the 10th anniversary of Statoil's operatorship of Troll gas production was celebrated with a concert by Katie Melua held at the base of the Troll A platform. As well as entertaining the workers on the rig, the concert set a new world record for the deepest underwater concert at 303 metres below sea level.

 http://offshorecrews.com/how-the-stuff-work/the-largest-offshore-gas-platform-the-troll-field