Transocean REP program - stage 1 report

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REP stage 1 report

REP Trainee: Tran Duy HaoRig assigned: Trident 9Rig-type: Jack-up


• Nowadays, petroleum is still the essential fuel for industries and daily life…

• But to get it out of surface of the earth, we need a lot of processes and considerable expertise, labor and equipment.

• The primary equipment in this process is the rotary rig and its component. We are now going to do a research on basic rig description of the Trident IX to understand some fundamentals about the rig and its component.

INTRODUCTION


The objectives of this report are:• Have a basic understanding about the

rig Trident 9• Be familiar with the major systems of the

rig and its operations• Draw conclusion about rig overall

performance and suggest improvement

OBJECTIVES


RIG GENERAL SPECIFICATIONS

•Trident 9

•Rig Type •Non-U.S. Jackups

•Design •Modec 400 C-35

•Builder •Mitsui, Sumitomo Heavy Industries, Japan

•Year Built •1982

•Classification •ABS Class +A1 Self Elevating Drilling Unit

•Flag •Liberia

•Accommodation •114 berths + 1 sickbay bed

•Helideck •Sikorsky: 70 ft diameter, rated for S-61N & Super Puma

•Max Drill Depth •21,000 ft / 6,401 m

•Max Water Depth •400 ft / 122 m

•Operating Conditions•Wave: 30 ft @ 12 sec; Wind: 70 knots; Surface Current: 0 knot

•Storm Conditions•Wave: 28 ft @ 12 sec; Wind: 87 knots; Surface Current: 3 knots

Rig Specifications



• Length • 249 ft • 76 m

• Breadth (Width) • 246 ft • 75 m

• Depth • 28 ft • 9 m

• Ocean Transit Draft • 17 ft • 5 m

• VDL - Operating • 2,700 st • 2,450 mt

•Liquid Mud •2,468 bbls •13,857 cu ft •392 cu m

•Drill Water •9,862 bbls •55,370 cu ft •1,567 cu m

•Potable Water •4,000 bbls •22,458 cu ft •636 cu m

•Fuel Oil •4,234 bbls •23,772 cu ft •673 cu m

•Bulk Mud •4,800 cu ft •136 cu m

•Bulk Cement •4,800 cu ft •136 cu m

•Sack Material •2,000 sacks

Capacities

Technical Dimensions

•Winches •4 x MAPE 23/60T, Electric, 2 speed, 33st pull, 40HP at 1800rpm

•Wire/Chain •4 x 2,500 ft x 1½in wire, Nippon steel wire rope, 6x41IWRC

•Anchors •3 x 7.5 st Moorfast

Mooring Equipment



•Derrick •DRECO 170 ft x 30 ft x 30 ft; 1333kips GNC, 1000kips SHL, 12 lines maximum

•Drawworks •National 1320-UE, 2000 hp input with Elmagco 7838 auxiliary brake

•Top Drive •Varco TDS-4S, 650 st. Torque 45,500ft-lbs@130rpm & 29,100@205rpm

•Rotary •National C375, 37½in opening, independent Hydraulic Drive (Aker Maritime)

•Pipe Handling •1 x Varco PS15, 5” OD pipe; 1 x Varco SSW40, 3 ½”-9 ½” OD pipe

•Mud Pumps •3 x Gardner Denver PZ-11, input power 1800 hp each

•Shale Shakers •4 x Brandt / VSM 300 double deck, 1200 gpm

•Desander •N/A

•Desilter •N/A

•Mud Cleaner •1 x Derrick FloLine mud cleaner w/ 8 x 4

•BOP •1 x Hydril GK 13-5/8in 5K annular; 1 x Hydril MSP 21¼in 2K annular; 1 x Cameron Type U 13-5/8in 10K single; 1 x Cameron Type U 13-5/8in 10K double; 2 x Cameron U 20¾in 3K single.

•Diverter •Hughes Regan KFDJ 37½in, Pressure rating: 500 psi

•Control System •Koomey T300-30-35 Type 80, 3000 psi, accumulator capacity: 480 gallons

•Choke & Kill •Cameron 3-1/16in 10,000 psi, H2S service with 1 x Cameron adjustable choke and 2 x Cameron hydraulic-operated chokes

•Cementing •BJ (third party)

Drilling Equipment


•Main Power •4 x Caterpillar D-3516 1650 hp each, driving 4 x CAT SR4 1120 kW, 600 V, 60 Hz AC generator

•Emergency Power

•1 x Caterpillar D-3412 driving 1 x GE 5AT1 400 kW, 600 V, 60 Hz AC generator

•Power Distribution

•Hill Graham SCR system, 7 bays, rated at 1800 amps and 600 V AC input, 750 V DC output

•Deck Cranes •3 x Fukushima OC 4513-4, electro-hydraulic, 100 ft boom, 49.6st @ 44ft & 18.7st @ 100ft

•Legs •3 x 518 ft

•Leg Spacing •Triangular 3 x 518 ft; Usable below hull 463 ft

•Spud Cans •Uneven Hexagon, 3 x 2853 sq ft (56.6ft x 50.42ft)

•Jacking System •Mitsui/National rack and pinion, 18 pinions per leg, maximum jacking load 3,960 st per leg

•Cantilever/Slot •Cantilever

Machinery

Jack-up Specifications



•HOISTING SYSTEM•ROTATING SYSTEM•CIRCULATING SYSTEM•WELL CONTROL SYSTEM•POWER SYSTEM•AUXILIARIES

SYSTEM DESCRIPTION


HOISTING SYSTEM

The Hoisting System lifts the drill stem in and out of the hole while drilling a well and lowers the casing into the well. The hoisting system consists of the substructure, the derrick or mast, the drawworks (sometimes called the Hoist), the crown block, the traveling block and hook, and the drilling line (or wire rope).

Components of hoisting system and their functions:• Substructure: To support the rig floor, the rotary table, and the

suspended drill stem, to provide space for equipment and workers, to provide space under the rig floor for the BOPs.

• Derrick or Mast: To support the weight of the drill pipe string.• Drawworks (Hoist): To draw pipe out of and lower it back into

the hole.• Blocks and Drilling Line: To support the load of pipe in the

derrick or mast as pipe is lowered into or withdrawn from the hole


ROTATING SYSTEM

The Rotating System turns the drill string and the bit to drill a hole. The rotating equipment from top to bottom consists of the top drive (or swivel & Kelly), the saver sub, the rotary table, the drill pipe, drill collars, and the bit. The assembly of equipment between the Top-Drive and the bit, including the drill pipe, and the drill collars (but excluding the rotary table) is the drill stem.

Components of the rotating system and their functions:• Top-drive: rotates the drill stem and the bit, eliminating the need

for a Kelly, a rotary table, a master bushing, or a Kelly bushing.• Rotary table: Turns the drill stem and supports the drilling

assembly.• Drill string: the drill pipe and drill collars through which mud is

pumped and to which the bit is attached.• Bit: cut or gouge the formation to make a hole.• Kelly: serves as passageway for drilling mud. Transmits rotary

movements to the drill pipe and bit.• Swivel: To support the weight of the drill stem, allows the drill stem

to rotate, provides a pressure-tight seal and passageway for the drilling mud.


CIRCULATING SYSTEM

The Circulating System circulates drilling fluid to the bit and back to the surface for cleaning and recirculation. For the rotary drilling system to function, fluid must be circulated downward through the drill stem, around the bit, and upward in the annular space between the drill stem and the wall of the hole or the casing.

A circulating uses the following equipment to circulate, clean and recirculate drilling fluid:

• Mud pumps: circulates the fluid from the pit, through the drill stem, to the bit, back up the annulus, and back to the pit.

• Standpipe manifold: Gives circulating configurations to support different operations in drilling operations

• Rotary hoses: conducts drilling fluid from the mud pump and the standpipe to the swivel and Kelly.


• Swivel: suspends and permits free rotation of the drill stem, provides a connection for the rotary hose and a passageaway for the flow of the drilling mud into the drill stem.

• Drill stem: provides a conduit for drilling mud, puts weight on the bit, and rotates the bit.

• Bit: cuts or bores the hole.• Mud return line (flow line): trough or pipe the through

which drilling mud flows on its return to the pit from the hole.• Mud tanks: accumulate mud circulated from the well; supply

mud to the pump for circulation; store enough mud to provide fluid to fill the hole when pipe is removed provide a means of processing the mud.

• Shale shakers: remove cuttings from circulating fluid. • Compressors (if the circulating system uses air or gas)

CIRCULATING SYSTEM


WELL CONTROL SYSTEM

Well Control System helps prevent blowouts. A blowout is an uncontrolled flow of gas, oil, or other well fluids into the atmosphere or into an underground formation. It can occur when formation pressure exceeds the pressure applied to it by the column of drilling fluid. A blowout endangers the lives of the crew, can destroy a rig worth millions of dollars, waste much needed petroleum, and may damage the environment. Although relatively rare, a blowout is an awesome sight. Fluid (oil, gas, oe salt water) erupts from the well, usually with great force, and often ignites into a roaring inferno, especially if the fluid contains gas


• Drilling mud: prevents the formation fluid from getting into the well bore and blowing out.

• Blowout preventers: close in the well and allows the crew to control the kick.

• Accumulator: stores hydraulic fluid that opens and closes the blowout preventers.

• Choke manifold: allows the usable mud coming out of the well while a kick is being circulated out and separates the flammable gas so it can be burned at a safe distance from the rig.

The right amount of drilling mud of proper density usually prevents the formation fluid from getting into the borehole and blowing out. If the bit drills into a formation with higher than expected pressure, however, or if the crew allows the mud level in the hole to drop, formation fluid may enter the hole and the well may kick, formation fluid enters the hole and forces some of drilling mud out of the hole.

WELL CONTROL SYSTEM


POWER SYSTEM

Power is the energy needed to run machinery. On nearly every rig, the power required for drilling the well comes from internal-combustion engines, most often powered by diesel fuel. A rig may need from two to four engines, depending on how deep the well is to be drilled. The Trident 9 have four 1650hp engines with 1120 kva generators that together may develop 6600hp, or 4923 kilowatts.

Components of the power system and their functions• Engine (Prime mover): Usually diesel powered internal

combustion engines. Basic source of rig power.• Drive (mechanical or electric): Transit power from the

prime mover to the rig components• Generator (on diesel electric rigs): Produces electricity

that is sent through cables to electric switch and control gear• Back-up Generator (Emergency generator): Provide a

back-up source of power in case main power system fails.


AUXILIARIES

In addition to the major equipment that makes up a drilling rig, many minor pieces of equipment are necessary. The power, hoisting, circulating, rotating and well control system all have support equipment unit, that added to the major units, makes it possible for the rig to function. The number and types of Auxiliaries to be found on a drilling rig are influenced greatly by how the rig is to be used. Such variables as terrain, climate, remoteness from supply center, and transportation requirements also have to be considered.

Air compressor: supply air for pneumatic controls and clutches; furnish powers to start main engines and operate air-powered hoists, air slips, air pump on BOP operating equipment, air-operated tools, etc.

Degasser: removes small amounts of gas from mud. Desilter and desander: removes the fine particles, or small solids,

misses by the shale shakers, to keep them from contaminating the drilling mud.

Mud Centrifuge: Clean the Mud to very fine particles (<10micron), used when drilling with expensive mud (UltraDrill for example…)


• Doghouse view port: In rainy days, the windows of doghouse are covered with water caused by heavy rain; this makes driller very difficult to supervise the rig floor due to poor viewing capacity, especially while tripping. We need to consider installing wipers on main windows (overhead window and main side window) to get a good view by maintaining a clean & clear window. (This must be “explosion-proof” wiper).

SUGGESTION FOR IMPROVEMENT


• Safety Cover for Shale Shakers control panel: On the control panel of shale shakers, it’s got to have a cover to disable the risk of switch the shakers ON while it is OFF. This is for safety.

• Refer to the design drawing for more details.



• Deck cranes for mixing-salt job:When drilling through basement, we will get

massive losses. So we need to mix lots of brine to be able to maintain well under control and keep a good hole cleaning…

Normally, we use the rig crane for mixing-salt in this case. But in some cases, the cranes are not available or are needed for another job…

We need to consider to install one or two Jib crane on main deck in the vicinity of mixing hopper to be able to handle the mixing job without having to use the big cranes…

>> Giving more options, more alternatives and more reliability for the rig operations.



ROTARY DRILLING SERIES - Petroleum Extension Service, The University of Texas at Austin, Fourth Edition 1995. Unit I: The Rig and Its Maintenance Unit II: Normal Drilling Operations Unit III: Non-routine Operations

OILWELL DRILLING VOLUMES – Transocean Sedco Forex. Vol 1. to Vol.10

T9 IADC EQUIPMENT LIST IADC DRILLING MANUAL - eBOOK WWW.RIGCENTRAL.COM WWW.RIGZONE.COM ...

REFERENCES


Special thanks to

• Robbie Clark: RSTC Trident 9• Ng. Kim Nhat Tao: Medic Trident 9

For the help of taking pictures of Trident 9 Equipment used in this presentation.

Especially to all of my supervisors and managers for their great instruction and help in my training.

ACKNOWLEDGEMENTS


Performance Analysis & Drilling Toolkit software

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Performance Analysis & Drilling Toolkit software

ADDENDUM

Date post:	16-Apr-2015
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Transocean REP program - stage 1 report

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