(1) the maximum hook load 3150kN

(2) the nominal drilling ability (Φ 114mm drill pipe) 5000

(Φ 127mm drill pipe) 4500

(3) of 6 × 7 rope (straight through)

(4) the drilling wire rope diameter 35mm

(5) the maximum input power of 1200kW (1610hP)

(6) the winch gear stepless speed regulation

(7) the opening diameter 952.5mm ("37?")

(8) the drilling pump rated power / number 1176kW (1600hP) /2

(9) the effective height 45m

(10) the type of K type derrick

(11) the vertical root volume (5 "5000m pipe)

(12) the base type slingshot (slingshot)

(13) the floor height 9m

(14) the clearance under the table beam 7.62m

(15) the floor area (length * width) 12m × 10.8m

(16) the gas tank capacity of 4m 3 +2.0m 3 (Huan Chongguan)

(17) the power of main generator x number 1020kW * 3

(18) auxiliary power unit power * number 292kW * 1

(19) the total power of the rig is equipped with 3 x 1020kW+292kW

(20) the total capacity of the mud tank 300m3

(21) electrical transmission mode of AC - DC - AC

(22) the winch motor power / number 600kW/2

(23) the turntable motor power / number 600kW/1

(24) motor power / mud pumps 1200kW/2

(25) the winch accessory drive motor power / number 45kW/1

(26) the drilling rig working environment temperature: -20 to +50 ° C

Humidity: ≤ 90%

The main characteristics of drilling rig

(1) the electronic control system of ZJ50DBS drilling rig is built on the bus communication technology on the basis of the digital control system, automatic control of variable frequency system and the various functional components, use the program to ensure the efficient, safe operation of the whole system. The drilling machine drilling parameters and electrical parameters control, display,collection, storage and transmission system more perfect, to create the necessary conditions for drilling engineering information, intelligent.

(2) the ZJ50DBS drilling rig electric drive system: in order to meet therequirements of strengthening the drilling technology, drilling machine equipped with 3 sets of 1020kW numerical control injection of main diesel generator and 1sets of 292kW auxiliary power unit, to provide power for the drilling rig. 2 sets of 1600HP mud pump are respectively driven by a single frequency power 1200kWAC variable frequency motor; winch is powered by 2 600kW AC frequency conversion motor, winch equipped with 45kW auxiliary drive motor, with automaticdriller and emergency operation function; independent drive turntable is composed of 1 600kW AC variable frequency motor. The main motor systemselected 690V European standard, can greatly reduce the manufacturing cost,simplifies transmission. Drive drawworks, rotary table and mud pump adopts AC frequency conversion technology of direct torque control, the main function of the realization of digital program control rig. Winch to realize dynamic braking and NCconstant drilling pressure automatic drill bit feeding.

(3) the turntable is directly driven by the 1 600kW frequency conversion motor through a universal shaft, the rotary speed can be adjusted continuously in the range of 0 ~ 300r/min. Motor dynamic characteristics of soft, large speed range and high torque capacity, the normal work of the maximum torque of 32.36kN.m.The control system has perfect monitoring and torsion protection function,protection of torque value can be set arbitrarily in the 0 to 100% range.Therefore, in the process of drilling, can accurately judge the running status bits,avoid the cone and other accidents, ensure maximum drilling works smoothly.Turntable with inertia brake, and linkage control electric drive, automatic brakingto ensure power, to avoid accidents during operation.

(4) JC50DB uniaxial winch gear, stepless speed regulation, has the advantages of light weight, small volume, small amount of maintenance. Winch speed andcontrol the energy consumption braking and AC frequency conversion control,under normal circumstances, hydraulic disc brakes only parking, positioning andemergency stop function, but also has a manual control lowering function. Winch all operating parameters, including the drilling speed, hook position, varioussecurity settings, CNC frequency automatic drill bit feeding, energy consumption braking function, through the computer and the electronic control system to realize full digital control.

(5) the derrick is a K type structure, the base for the slingshot (slingshot)structure, using a winch power lifting; the main equipment and drilling controlroom can low installation. Hydraulic wellhead, and equipped with reliableexplosion-proof hoisting device. Table reserved for the installation of a full set ofhydraulic equipment position.

(6) features of the electrical drive system

Direct torque control

The direct torque control, excellent torque response, good low-speed performance. By means of analysis method of space vector modulation direct torque control, calculation in stator coordinate and control the torque of AC motor, the best control of switch states of the inverter, in order to achieve high dynamic performance of torque.

The frequency conversion system with common DC bus

Using two sets of independent rectifier unit to the DC power supply, can bemutual backup. The model of variable frequency speed regulation system, than the size of single drive module greatly reduced.

The dynamic braking (Honghua company patent technology, patent number:ZL02 222560.9) using drill down the winch motor work in generating state, the formation of braking torque. Energy consumption braking alternativeelectromagnetic eddy current traditional brake, change the traditional concept ofthe auxiliary brake, the braking system and the frequency conversion techniquecombine together.

The numerical control frequency automatic driller (Honghua company patent technology, patent number: ZL02 222561.7)

Using frequency conversion technology and drilling automatic digital controltechnology to realize the rig. Drilling by digital variable frequency drive system to set the constant torque anti drag roller, automatic speed control and protection,to achieve constant pressure steady speed drilling, drilling error is less than ± 500kg. Automatic drill bit feeding system with Bailing winch share a set offrequency