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GLAD800 System (Global Lake Drilling to 800 meters depth)

• Depth Capacity Coring (Wireline or Conventional)
  HMQ Wireline 1200m
  DLS Wireline 800m

• Weight
  Rig Weight: 19,000 lb (8,617 kg)

• Chuck Assembly
  Type Hydraulic Open, Spring Closed
  Maximum Inside Diameter: 4-5/8 in (117 mm)
  Holding Capacity: 40,000 lb (18,181 kg)

• Feed System
  Stroke: 11.5 ft (3.5 m)
  Thrust: 15,000 lb (6,800 kg)
  Pull: 30,000 lb (13,600 kg)

• Hoisting Capacity
  Main
  Capacity: Single Line-Bare Drum 17,500 lb (7,955 kg)
  Capacity: Double Line-Bare Drum 35,000 lb (15,900 kg)
  Cable Size: 110 ft (33.6 m) x 3/4 in (19.0 mm)
  Wireline
  Capacity: Single Line-Bare Drum 2,500 lb (1,136 kg)
  Capacity: Single Line-Bare Drum 840 lb (382 kg)
  Line Speed: Full Drum 1,260 ft/min (984 m/min)
  Cable Size: 4,000 ft (975 m) x 1/4 in

• Standard Equipment
  Dump Mast
  Derrick in Two Sections
  Foot Clamp 5 1/2 in (139.7 mm)
  Thrust: 15,000 lb (6,800 kg)

• Mud Pump Hydraulic Drive - Standard Equipment
  Type: FMC L11 22D
  Max Flow: 72 gpm (272 lpm)
  Max Pressure: 1,000 psi (7 Mpa)

• Power Unit
  Mfg: Cummins 175 hp
  Engine Type: 6 Cyl. Diesel Turbocharged

• Funding
  The GLAD800 is a joint venture between DOSECC and ICDP (International Continental Scientific Drilling Program). The system is operated by DOSECC.

GLAD200 System (Global Lake Drilling to 200 meters depth) 

Dynamic Positioning System

In water depths greater than about 200 m, anchoring becomes less effective as a means of maintaining the position of a drilling vessel. In these deeper waters, Dynamic Positioning (DP) is required. DOSECC has acquired a portable DP system with funding from the National Science Foundation and the International Continental Scientific Drilling Program. This unit is intended to be able to convert vessels of opportunity into drilling platforms. The system consists of four thrusters powered by four dieselhydraulic power packs. The system is controlled by a Nautronix JSDP5000 (DP-1 class) system that uses either a GPS signal or a seabed beacon for position keeping. The specifications of this system are provided in the following table.

• Thrusters
  Four hydraulic thrusters yielding 8,000 lbf each
  Propeller: 39-inch, 4-blade Kaplan, manganese-bronze with Kort 19-A nozzle
  Mounting: Thruster on mini-skid, positioned and attached according to vessel structural
  members.
  Weight: 5,800 lbs. each
• Hydraulic Power Units
  Four Cat 3406 diesels delivering up to 360 BHP @ 1800 rpm (full load)
  Fuel Consumption: 17.5 US gallons per hour at full load
  Day Tank Capacity: 150 US gallons
  Dimensions: 11'-43/4" long X 5'-7" wide X 9'-31/8" high. Note: an additional 3' is minimum clearance required at both ends of HPU for air inflow and outflow, making effective length requirement of 17'-43/4".
  Weight: 11,300 lbs. Each
  Placement: Within 50' of thruster
  Four roofs for power units
  Four muffler / exhaust systems
  Connecting hose bundle: 6 hoses, overall diameter of 6" (Old, probably need replacement)
• Controller
  Nautronix JSDP5000 Dynamic Positioning System (DP-1 class)
  Consisting of: 2 underwater beacons and battery packs
  1 hydrophone and cable
  1 control console / computer

Active Heave Compensated Drilling System

DOSECC's AHC-800 is an active heave compensated (AHC) coring rig that is capable of retrieving continuous core to depths of 800 m (water + sediment) in shallow marine and deep lacustrine environments. The system is modular and designed to fit on a variety of drilling platforms. The AHC-800 is designed to compensate for up to 8 feet of heave with a period of 8 seconds.

The AHC-800 uses a set of proven sampling tools that include:

• Shelby "push" tube
• Hydraulic Piston core (HPC)
• Extended Shoe, non-rotating
• Extended Core Bit, rotating ("The Alien")
• Diamond Core Bit (mining)
• Non-Sampling Assembly

The tools core a hole 5.50 inches (139.7 mm) in diameter. Most are designed to collect core within a plastic liner with an inner diameter.

 

 

 

 

 

DOSECC MONTCO Offshore Drilling Platform

The DOSECC MONTCO unit includes a drilling rig mounted on a liftboat. This combination allows drilling to continue during almost any sea condition.