Drilling Method Sample Clauses
Drilling Method. 1. The borehole may be constructed using multiple passes to achieve the specified borehole diameter. If the borehole is constructed with multiple passes, a pilot bit shall be used for each successive pass.
2. The Contractor shall be responsible for keeping the well bore full at all times in order to maintain the integrity of the borehole. Sufficient piping of adequate diameter to convey water from the approved source to the drilling sump is the responsibility of the Contractor.
3. The Contractor shall employ appropriate drill collars to ensure that the hole remains straight and plumb during drilling operations.
Drilling Method. The service provider may use any rotary or percussion drilling technique that he feels applicable to achieve the depth and diameters required within the time for completion specified in the contract. However, the service provider should exhibit ownership of at least 1 rotary drilling rigs and percussion drilling ring capable drilling minimum 200m deep to be eligible for this contract.