AC variable frequency electric drive drilling rigs - AC variable frequency electric drive drilling rig - Dongying Xinwo petroleum machinery Co.,Ltd
AC variable frequency electric drive drilling rigs adopt VFD drive and digital control technology which can simplify the drawworks structure and improve the drilling rig performance. Broadband high-power AC frequency electric machine being adopted can achieve whole course stepless speed regulating of drawworks, rotary table and mud pump completely,
Drawworks are gear drive and single shaft drawworks with one gear stepless speed regulating, simplified structure and reliable performance. The brake adopts the combinative pattern of hydraulic disc brake and electric dynamic braking.
Drawworks adopt main motor or independent motor to achieve automatic drilling and make real time monitoring for round trip and drilling condition.
Intelligentize travelling block position control has the function of preventing ”bumping top and smashing bottom”. The drilling rig is equipped with independent driller control room. The gas, electric and hydraulic control and drilling parameters and instrument display can be arranged unitedly so that it can achieve logiccontrol,monitoring and protection through PLC during the whole drilling. In the mean time, it can also achieve saving, printing and teletransmission of the data. Driller can accomplish all operations in the room which can improve the working environment and decrease labour intensity of drillers. The manufacture of main components accord with API relevant specifications and the components are stamped with.
Type and specification of DC Electric Dri11ing Rig
 
Type ZJ40/2250DB ZJ50/31 50DB ZJ70/4500DB ZJ90/6750DB
Nominal Drilling Depth(1 14mmDri1l Pipe) 2500-4000 3 500-5000 4500-7000 6000-9000
Max. Hook LoadKN 2250 3150 4500 6750
Max. Line Number of Trave11ing System 10 12 12 14
Dri]1ing Wirerope Dia. mm(in) 32 (1 1/4) 35(1 3/8) 38(1 1/2) 45(1 3f4)
SheeveDia. ofTrave11ingSystem  mm(in) 1 1 20(44) 1270(50) 1 524(60) 1 524(60)
Swive1 Stem Th11,ough-hole Dia. mm(in) 75(3) 75(3) 75(3) 75(3)
Rated PowerofD11awworks(hp) 735(1000) 1100(1500) 1470(2000) 2210(3000)
Drawwork Shifts 1 stepless speed 1 stepless speed  regulating 1 stepless speed 1 steplessspeed
regulating regulating regulating
  520.7(20 698.5 (271/2) 698.5(27 952.5 (371/2) 952.5 (371/2) 952.5 (37 1257.3 (49
Openning Dia. of Rotary Table 1/2) 1 /2) 1/2 ) 1/2 )
Rotary Table Shifts 1 stepless speed 1 stepless speed  regulating 1 stepless speed 1 steplessspeed
11tlgulating regulating regulating
Singel MudPump Power kWOp) 735(1000) 960(1300) 1180(1600) 1180(1600) 1180 1620(2200)
( 1600)
Mast Height m(ft) 43(142) 45(147) 45(147) 48(157)
Dri11 F1oorHeight m(ft) 7.5(25) 7.5(25) 9 (30) 9 (30) 10.5 (35) 10.5 (35) 12 (40)
Clear Height ofDri11 FIoor 6.26(20.5) 6.26(20.5) 7.62 (25) 7.42 8.92 8.7(28.5) 10(33)
(24.5) (29.5)
Note DB-ACVariable Frequency Electric Drive Drilling Rig

AC variable frequency electric drive drilling rigs