BHEL make AC-SCR rigs are known for their long life and less down time. BHEL has complete know-how of AC-SCR technology and it is proven in the fields. Almost all the AC-SCR rigs being operated by M/s ONGC & M/s OIL were supplied by BHEL. These Rigs were proven for their performance with operational life more than 25 years.
BHEL offers four variants of AC-SCR rigs with drilling depths covering shallow & deep formations. The Rig package can be standard package or custom built to suit to individual customer requirements.
AC-SCR 3000HP Rig For Drilling depths upto 9100 meters
The standard AC-SCR 3000 HP Rig package includes:
MAST AND SUB-STRUCTURE
Cantilever swing lift type Mast with clear height of 152 ft.
Base width at floor level is 35 ft.
Static hook load capacity is 1,500,000 lbs.
Wind load capacity with full pipe set back is 100 mph.
The package includes basic accessories like Racking plat form, Crown block, Ladders, Mast raising and lowering sling lines & Pulleys etc.
DC 3000 HP DRAW WORKS
Draw works designed for 3000hp input power. It is driven by 3 nos of DC motors which possess superior speed-torque characteristics. The power transmission is through chains & sprockets. Standard DC Draw works carries Drive shafts for the Rotary and Catheads also. The drum is grooved for 1 1/2 wire line. Braking system consists of Eddy current brake as Auxiliary brake and Band/Friction type brake as Main brake.
Travelling Block & Hook rated for 750Ton dead load, PC 650 Swivel with 650Ton dead load rating and 425Ton API bearing rating at 100RPM forms Travelling Assembly.
MUD PUMPS WITH DC MOTORS
- Three nos of 1600/1700PT triplex single acting pumps.
- Maximum per pump working pressure: 5000 Psi.
BHEL offer the complete Rig power system consisting of
- DC-Power Control Room which houses Generator panels for Rig power packs and SCR Drive units for Draw works, Mud pumps and IRD
- Six nos AC-power packs consisting of 1180 HP, 1500 RPM engines and 1430 KVA, 600v, 3 Phase, 50 HZ, 0.7 PF alternators housed in a completely enclosed acoustic enclosure.
- MCC house for all Rig accessories 1no.
- Rig lighting system 1 set
- Cables & fittings 1 set
- The Rig Instrumentation system is intended for real time monitoring of various critical parameters while drilling. The system includes various field sensors, necessary cabling, central server and client work stations.
- The system is SCADA compatible for data transfer.
ROUND BOTTOM MUD TANK SYSTEM
BHEL offers SOBM compatible Mud systems. The system consists of 7 no. of tanks each of 60 Cu.M capacity as mentioned below and 1 no. trip tank.
- One shaker tank
- One setting intermediate tank
- One suction tank
- Four reserve tanks.
Each tank is equipped with sufficient number of agitators for proper churning of Mud.
Mud system also includes mud preparation system along with standard suite of solid processing equipment namely, Shale shakers, Mud cleaners, Desanders and Degassers.
* Number of tanks and mud capacity can be changed to customers choice.
HIGH PRESSURE MUD PIPING
Includes set of high pressure piping b/w Mud pumps and Gooseneck along with suitable standpipe manifold.
RIG AUXILIARY SYSTEMS
The standard package includes Fuel system and Water system complete with necessary storage tanks and pumping units, Air system complete with compressors and storage vessels.