MHWirth’s cost-efficient drilling packages for semi-submersibles fit to any type of hull. Our designs are delivering performance in a large number of operations worldwide.

With extensive experience from more than four decades, we design flexible and field- proven equipment for mid and shallow water. Our designs have proven to be robust in worldwide operations in harsh and cold climates, as well as in tropical areas. A well-known reference is the Aker H3 rigs.

MHWirth offers solutions for all market leading hull designs with a strong focus on efficient operations, material handling, simultaneous operations and redundant designs.

MHWirth is set up for execution models ranging from single equipment to complete EPCI contracts. Our ex-perienced and skilled engineering service and the 24/7 technical service are here to support you with your project requirements.

Various derrick sizes and capacities are available, de-pending on the hull design and your functional require-ments. All packages contain a RamRig™ (cylinder based) hoisting system. For re-builds and new builds, a low set-back configuration is available.

All drilling packages meet the highest HSSE standards and are delivered in accordance to all relevant certifica-tions such as ABS, DNV, CDS, API etc.

The following basic operations can be executed with our equipment:■ Drilling production, injection, exploration and relief

wells■ Batch drilling■ Completion of sub-sea wells■ Intervention and maintenance of sub-sea wells■ Wireline and coil tubing operations■ Well testing and clean-up operations■ Killing of wells

Semi-Submersibles

Mid and shallow water

■ Flexible solutions to suit project requirements and hull designs

■ Extensive project experience in harsh environ-ments since 1982

■ Integrated drilling control and monitoring system including DrillView™ system, enabling condition based maintenance

■ Simulators in the design phase to optimize opera-tions and for training

■ In-house engineering resources ensuring full sys-tem integration and commissioning capabilities

Benefits

Semi-Submersibles | Mid and shallow water

For more information, contact marketing@mhwirth.com | mhwirth.com

Technical Specifications

750 System 1 000 System

Main capacities Drilling depth +/- 30 000 ft (9 144 m) Operational water depth from 250 ft (75 m) up to 5 000 ft (1 524 m)

Net hoisting capacity 750 short tons (680 mT) in elevator 1 000 short tons (907 mT) in elevator

Hoisting system Single gear drawworks GH 4500 - 14 lines

Single gear drawworks HCGH 6000 - 12 lines

Single gear drawworks GH 6000 - 14 lines

Single gear drawworks HCGH 9000 - 14 lines

Compensation Top mounted 750/500 short tons (680/454 mT)

AHC drawworks Top mounted 1 000/640 short tons (907/689 mT)

AHC drawworks

Derrick size 49.2 x 52.5 x 170.0 ft (15.0 x 16.0 x 51.8 m) or 49.2 x 52.5 x 185.0 ft (15.0 x 16.0 x 56.4 m)

49.2 x 52.5 x 170.0 ft (15.0 x 16.0 x 51.8 m) or 49.2 x 52.5 x 210.0 ft (15.0 x 16.0 x 64.0 m

Net lifting height 137.1 ft (41.8 m) or 152.2 ft (46.4 m) 137.1ft (41.8 m) or 152.2ft (53.5 m)

Set-back Triple stands, nominally 93 ft Min. 31 000 ft DP/10 stands 9 ½ in DC/2 stand BHA and 7 560 ft up to 14 in casing Max. 882 short tons (800 mT)

Triple stands, nominally 93 ft or quadruple stands, nominally 135 ft Min. 31 000 ft DP/10 stands 9 ½ in DC/2 stand BHA and 11 340 ft up to 14 in casing Max. 1 100 short tons (1 000 mT)

BOP/kill & choke system Flexible integration of BOP as per customers choice. Up to 6 ram, footprint 20 x 16 ft (6.1 x 5.2 m), weight max. 450 short tons (400 mT)/15 000 psi (1 035 bar). MUX or hydraulic control systems.

BOP and Xmas tree handling

Hang-off trolley for BOP with full capacity BOP crane above. Hard hang-off facility for BOP/riser as option. SWL as required. Xmas tree trolley with crane. Stack-up guiding and fork-lift trolley as option

Risers 50, 60 or 75 ft (15.2, 22.9 or 27.4 m) joints stored horizontally in hull or on deck. Riser handled with dedicated gantry crane(s) or by rig crane with riser yoke. Complete delivery including all pups, flex joints and valves and 2 each TJ’s with

+/- 65 ft (19.8 m) stroke. Riser handling systems to suit horizontal or vertical storage and hull specific requirements

Mud pumps Four each triplex TPK 2200 AC gear driven, single water jacket motor drive. Standard 7 500 psi (517 bar)/ optional 10 000 psi (690 bar)

Low pressure mud and solid system

Integrated low pressure mud system including mixing facilities. Bulk handling and hose loading packages available. Solids control and handling packages are tailor made to suit the requirements.

Data is subject to confirmation by the manufacturer.

© MHWirth 2017 | 2017/07 Rev. 2