The Conrad Zull 2000 is the successor to the well-known Zull 1000 that is completely new with regard to set-up. It has been continued to be developed to obtain the most powerful rig in our product range. Its A-mast construction guarantees a very stable set-up during drilling under the most extreme conditions.
This rig has been equipped in its first version for reverse circulation/airlift drilling (ZULL) where a choice can be made for either 6" or 8" double-walled airlift drill pipes. The Zull 2000 in combination with the 8" double-walled drill pipes and 8" drilling system guarantees a high production speed when drilling holes as from approx. 500 mm up to a diameter greater than 1 metre. The drilling rig can be supplied with an externally set up drill pipe storage with a drill pipe manipulator. This system can be fixed with relation to the drilling rig to ensure good drill hole alignment. The drive and operation takes place from the drilling rig. As specified in the technical specifications, this rig can be fitted out to perform all drilling methods commonly used and, therefore, the Zull 2000 can be deployed as a full combination drilling rig. The Zull 2000 can be fitted out based on customer specifications for straight flush drilling, reverse circulation/airlift drilling, percussion drilling, sonic drilling, coring and Down-The-Hole drilling.
The Zull 2000 can be fitted out based on customer specifications for one of the drilling methods described below.
Reverse circulation drilling
Reverse circulation drilling up to approx. 70 to 80 metres can be carried out with a reverse circulation pump and reverse circulation drilling bit diameters up to approx. 1200 mm. *
The airlift drilling principle by using a compressor is the appropriate method to continue the reverse circulation drilling with a hole diameter of approx. 1200 mm to a depth of 1000 metres. +
Straight flush drilling
Holes with a diameter of approx. 350 mm can be continued up to a depth of 1000 - 1200 metres by using a water, mud or foam circulation system with this drilling method. *
By equipping the Zull 2000 with a rotary table and a stroke mechanism, percussion drilling is possible up to a depth of at least 200 metres with a max. casing diameter of 420 mm.
The Zull 2000 can drill with both hollow stem and full augers that have an outer leaf diameter of approximately 800 mm with the standard 6" drill head.
Counter flush drilling
For special activities the Zull 2000 can be equipped with a counter flush system for sampling for exploration objectives to name but one example.
Operator convenience & comfort
Conrad Stanen has translated a lot of experiences of drilling rig operators into the operating friendliness of its designs. This ensures that productivity is increased as a whole and that it is made more pleasant for the drilling rig operator to work with the rig. A few examples of this are:
- Full drill pipe manipulation system that ensures that drill pipes no longer have to be inserted and extracted manually (no physical load)
- A semi or fully automatic facility for the above to ensure that manual control is limited to a minimum (operating comfort)
- Radio remote control for all important drilling functions and setting up the drilling rig (good visibility of the drilling process and surrounding area)
- Automatic greasing system
- A high engine performance that increases productivity
The drilling rig operator can set himself or herself up in the area of the rig with his or her radio control unit. Inserting and extracting drill pipes are automatic tasks and do not lead to physical loads. This also prevents the risk of body parts becoming trapped.
|Option 1||Dieselmotor P.T.O. 260 kW|
|Option 2||Dieselmotor P.T.O. 350 kW|
|Length||10 / 13 m|
|Max. safe working load||600 kN|
|Height under crown sheave||9 m|
|Stroke||7,2 / 10,2 m|
|Pull back||500 kN|
|Pull down||150 kN|
|Lifting speed||0,35 m/sec|
|Thrupass||150 mm / 125 mm|
|Torque / Revolutions||
2000 daNm @
1000 daNm @ 120 rpm
|Thrupass||200 mm / 125 mm|
|Torque / Revolutions||
2500 daNm @
1250 daNm @ 100 rpm
|Line pull||6000 daNm|
|Steel cable||100 m ø 10 mm|
|Lifting speed||0,5 m/sec|
|Rate||105 m³ / hour|
|Rate||280 - 320 m³ / hour|
|Suction height||9 m.w.k.|
|Rate||8 - 9 m³ / min|