Brief Introduction
Rigs are used in oil and gas exploration and development. Products comply with API Spec 4F, 7K, 8A, Models and Basic Parameters of Rigs (SY/T5609-1999) and related standards, and API symbol occupancy permit has been obtained.
Technical Performance & Characteristics of Electric Drilling Rig
DC and drive drilling rigs are driven by AC-SCR-DC and AC-DC-AC respectively so as to achieve intelligent control over the rigs. A rig is powered by a diesel generator set, and a drawworks is provided with a hydraulic brake pad and an auxiliary Eaton brake. Winches, drilling pumps, and rotary tables all adopt independent electric drive and stepless speed regulation (rotary tables may also adopt combination drive). The derrick is in K-shaped structure, and the base in swing-up or case block type structure, both of which (if any, the latter shall be of swing up type) are installed at a lower position and hoisted as a whole. The drilling control room imposes centralized control so that rigs are delivered automatically. An AC variable-frequency drilling rig provides dynamic braking.
Technical Performance & Characteristics of Mixed Drilling Rig
Mixed rigs:such rigs are powered by diesel engines; belts or chains are combined to provide a driving force; adrawworks is driven by sealed chains and provided with a hydraulic brake pad and an auxiliary electromagnetic eddy current brake; the drawworks and the drilling pump are provided with unified driving, and the rotary table with independent AC variable-frequency driving and a VFD system; the derrick is in K-shaped structure, and the base in swing-up or case block type structure, both of which (if any, the latter shall be of swing up type) are installed at a lower position and hoisted as a whole; the drilling control room imposes centralized control so that rigs are delivered automatically.
Technical Performance & Characteristics of Mechanical Drilling Rig
Mechanical rigs: rigs: such rigs are powered by diesel engines; belts or chains are combined to provide a driving force; a drawwork is driven by sealed chains and provided with a main brake pad/band and an auxiliary electromagnetic eddy current brake; the winch, rotary tables and the drilling pump are provided with unified driving; the derrick is in A/K-shaped structure, and the base in swing-up or case block type structure, both of which (if any, the latter shall be of swing up type) are installed at a lower position and hoisted as a whole, which may be controlled by the drilling control room or the driller station.
Model Parameters | ZJ70/4500LDB ZJ70/4500LDZ ZJ70/4500DB |
Nominal drilling depth m | 4500~7000 |
Max. hook load kN (lbf) | 4500(1011, 600) |
Rated power of drawworks kW(hp) | 1470(2000) |
Tethered structure of runner wagon systems | 6*7 |
Dia, of drilling wire lines mm(in) | 38 (1 1/2) |
Unit power of a drilling pump kW(hp) | 1180(1600) |
Dia. of opening on rotary tables mm(in) | 952.5(37 1/2) |
Drill floor height m(ft) | 9(30); 10.5(35) |
Structure type | K-shaped, open front |
Height m(ft) | 45(148) |
