Land and shallow water oil well drilling rig

1.Approved API&ISO certificate 2.Oil drilling rigs manufacturer 3.Nominal drilling depth:2500-4000m

Characteristic of Electrical Driven Drilling Rigs:

1. Basic parameters of drilling rigs conform to the industrial standard SY/T5609-1999 Oil drilling Rigs Models and Basic Parameters.

2. D.C. motor driven drilling rigs have a modern AC-SCR-DC power system which is the most advanced in the world. The speed of drawworks, rotary table and mud pump can be electrically controlled to provide excellent drilling performance. The power system uses an A.C. frequency converter and digital control technology for enhanced performance during drilling operations.

3. The substructure (H:7.5m/9m/10.5m) use a parallelogram elevator design, so the floor and mast can be installed at low height before elevating to the operating position.

4. The drawworks main drum brake is a hydraulic disc brake system with enhanced braking torque. The brake handle is located in the driller’s control room. The ‘stand up in open air’ type driller’s position is changed into a ‘sit down in the room’ type workstation so as to reduce driller’s fatigue and provide an improved working environment.

5. The drawworks rotary drive is installed below the rig floor, which provides more working room. It is convenient for maintenance, transportation and proper installation.

6. Auxiliary brake of the drawworks can be either an eddy current brake or EATPON brake which improve reliability, and extend the service life of disc brakes and/or brake blocks. Drums are provided with grooves which improve line spooling.

7. Independent rotary table drives can be provided.

8. The adoption of modularized components and folding cable trays makes it easy to move.

9. Scope of rig equipment and standard parts make it convenient for maintenance.

10. Main manufacturing equipment/parts conform to related API specifications which allow participation in international drilling rig contracts.

Specifications of Electrical Driven Drilling Rigs

Model	ZJ40/2250DZ(DB)		ZJ50/3150DZ(DB)			ZJ70/4500DZ		ZJ90/5850DZ
Nominal drilling depth(11mm drilling pipe) m	2500-4000		3500-5000			4500-7000		6000-9000
Max. hook loading rating             KN	2250		3150			45000		5850
Max. number of line, traveling block	10		12			12		14
Dia. of Wire line for hoisting       mm(in)	32(11/4)		35(13/8)			38(11/2)		42(15/8)
Sheave O.D. of travelling block       mm	1120		1270			1524		1524
I.D. of swivel stem                   mm	75		75			75		75
Rated power of drawworks           Kw	735		1100			1470		2210
Number of hoisting speeds	4		4			4		4
Dia. of opening                   mm(in)	520.7(201/2)	698.5(271/2)	698.5(271/2)		952.5(371/2)	952.5(371/2)		1257.3(491/2)
Number of rotary speed	2		2			2		2
Power of each mud pump         KW(hp)	735(1000)		960(1300)	1180(1600)		1180(1600)		1470(2000)
Working height of mast                 m	43		45			45		45
Height of drilling floor                 m	7.5		9	10.5		9	10.5	10.5	12
Clear height of drilling floor             m	6.26		7.617	8.92		7.42	8.92	8.7	10
Notes:DZ—drilling rig driven with D.C. motor; DB-Drilling rig driven with A.C. motor with frequency converter.

Land and shallow water oil well drilling rig