BENNEVIS JACK-UP RIG

BENNEVIS JACK-UP RIG

LOAD LIMITS

Total Variable load 2789st

Maximum Cantilever Loads:

Hook Load 800,000lbs
Rotary Load 800,000lbs
Setback load 400,000lbs
Cantilever pipe racks 600,000lbs
Total hook, rotary, setback (Subject to limitations) 800,000lbs

Individual variable limits:

Tubular in pipe racks about 400st
Liquid mud 1600 bbls
Sack Materials about 1400 sacks (for easy handling)
Drill water 3470 bbls
Potable water 740bbls
Fuel oil 9637bbls
Bulk mud & cement 840 bbls
Preload & Surge tank 5354 bbls

DRILLING EQUIPMENT & LAYOUT

Derrick: Lee C. Moore, 30 ft X45 ft base x 160 ft high. Rated at 1,300,000 lbs.

Set back capacity: 175 stands of 5 inch drill pipe and 7 stands of g 1/2 inch collars.

Derrick outfit: Deadline anchor – National Type E with Martin Decker E-80 Sensator. Lee C. Moore 3-well, 500t crown block equipped with 7 × 60 inch sheaves National 60-G500, 500 t combination hook and travelling block, Varco Top-Drive. Model TDS-3, drilng system complete with 1000 hp DC drilling motor assembly reduction gears, torque wrench (pipe handler ), support and drillers control consol. Two National Model P-500 swivels.

Draw- Works: National Model 1320 UE driven by two GE 752 DC motors of 1000 hp each. Draw-works complete with Baylor Model 7828 dynamic auxiliary brake . Lebus grooving for 1 3/8 inch wireline. National Type B-1 make-up and breakout catheads, and Crown-o-Matic crown block protector. Halliburton wire line unit complete with 14000 ft of 0.092 inch wire.

Totco single shot non- directional survey instrument.

Rotary: National Type C-375 (37-1/2 inch) . Rotary is complete with Varco 6600 Type MPCH master casing bushing and Varco type HDP roller Kelly bushing (Rotary is available as back – up to Top Drive system if required.

CANTILEVER AND SUB- STRUCTURE SKIDDING

Drilling area: 10 ft to 60 ft outreach and 10ft either side of drill centre,

The Cantilever includes a pipe rack. (There is another pipe rack on the main deck)

BLOW.OUT PREVENTION & WELL CONTROL

Blow -out Prevention: Two Double Cameron 13-5/8* Type U. 10,000 psi Working Pressure. One Hydril 13-5/8*, Type GL spherical BOP- 5,000 psi WP annular type. One Shaffer 20° annular BOP – 2000 psi WP.

Choke Manifold: Cameron 3-1/16* – 10,000 Psi W

BOP Control: Koomey Model T-151-60 (160 gals) with remote control Unit Model T .151-80-35

Diverter: Hydril 29-1/2*, Type MSP- 500 Psi WP.

MUD SYSTEM

Two National Type 12P-160 Mud Pumps. Two Mission 6* x 8° centrifugal mud mixing Pumps. Two Mission 6° x 8° centrifugal Pumps for de-sander and de-siller service. Brandt Dual tandem Screen high speed shale shaker. Three derrick FloLine Mud Cleaners. One Demco Model 123 de-sander with three 12° Cones. One emco Model 416-h de-siller with sixteen 12* Cones. One Swaco mud cleaner with eight 4″ Cones. One atmospheric- type de-gasser with vent line to top of derrick and one Swaco vacuum- type de-gasser.

MUD PROCESSING

One re-circulating trip tank – 25 bbls. Four solids removal tanks – 98 bbls each. Two active mud tanks and two reserve tanks – 400 bbls each. One pill tank – 50 bbls. Dual standpipes and standpipe manifold – (5000 psi WP. Two rotary hoses 3-1/2″ ID- 5000 psi WP. Six 1400 cu.ft. horizontal pneumatic-type bulk mud/cement storage tanks (three for mud). Two low pressure bulk air compressors.

Cementing unit with re-circulating mixer.

POWER

Generators: Four Alco Model 215-V-12 diesel-electric engines of 2,250 hp each. Four GE GT 608 2,250 hp continuous input DC generators for propulsion and drilling.

Two Caterpillar 3516B diesel engine each driving 1825 KW AC generator and one Caterpillar D399-TA diesel engine driving one 800 KW AC generator. One Perkins 4236-56 hp diesel engine driving one 30 kW emergency generator.

Propulsion: is provided by twin propellers with power supplied by two GE GT-608 motors of 2,000 hp (Total 8,000 shaft hp).

JACKING SYSTEM

Electro- hydraulic jacking system operation two jacking cylinders on each of the four triangular legs providing preload pressure of up psi on each leg. Electical and hydraulic fail-safe 3600 to

Weights jacked up

Hull and machineryp 8323st
Maximum Variable 2789s1
Total 11,112st

Jacking Capacity

Total jacking 3530t/tower
Dead load holding 7.200t/tower
Jacking Speed 60ft/hour
Locking shims are provided for rig moves.

SAFETY SYSTEMS

Abandonment: Two Watercraft totally enclosed lifeboats for 42 men each (84 men total). Six life rafts for 25 men each (150 men total). One rescue boat. 108 personnel survival suits.

H2S detection and protection: 15 Sabre 20 min breathing device with spare 20 min cinders. Texas A alytical four point H2S detection system. Portable H2S detectors and five personal dual H2S detectors.

Communications: ABS- approved GMDSS radio system.

Navigation: Decca RM 729M radar and 01 satellite navigator.

ACCOMMODATION

Fully air- conditioned for 84 people with conference and office space.