Technical Specifications (Top-Drive Models)
|
Model
|
Application Depth Range
|
Max Continuous Torque (kN·m)
|
Max RPM
|
Rated Hook Load (kN)
|
TDS Drive Type
|
|
TDS-1500
|
< 3,000m (shallow/water well)
|
35
|
200
|
1,500
|
Electric AC VFD
|
|
TDS-3150
|
Up to 5,000m (medium / directional)
|
65
|
180
|
3,150
|
Electric AC VFD
|
|
TDS-4500
|
Up to 7,000m (deep / horizontal)
|
85
|
150
|
4,500
|
Electric AC VFD
|
|
TDS-6750
|
Up to 9,000m (ultra-deep / ERD)
|
110
|
120
|
6,750
|
Electric AC VFD
|
|
TDS-H (Hydraulic)
|
Up to 5,000m (heavy jarring / shock load)
|
70
|
220
|
3,500
|
Hydraulic
|
Application Areas
Our Top-Drive Rigs are purpose-built for the most challenging drilling environments and trajectories:
-
Extended Reach Drilling (ERD): Drilling long horizontal sections where sliding becomes extremely difficult. The precise torque control of the TDS helps minimize drag and optimize ROP.
-
Directional & Horizontal Oil Wells: High-angle wells benefit significantly from the continuous rotation and backreaming capabilities that prevent cuttings from bridging the annulus.
-
Deep Water & Offshore Platforms: Space is at a premium offshore. A compact, top-mounted TDS reduces the footprint compared to a full rotary table floor, while the automated floor systems drastically cut the number of personnel needed, improving safety on demanding offshore sites.
-
Harsh & Deviated Wells: Any well profile with doglegs or tough lithology (salt, chert) benefits from the superior hole cleaning and round-trip torque control provided by a TDS.
Product Types & Configurations
We offer flexible TDS configurations to match both new-build and retrofit drilling projects:
-
Fixed Mast Top-Drive Rig: Integrated directly into the new-build K-type mast. The TDS unit travels up and down the mast on guide rails. Best for high-performance, long-term land or offshore campaigns.
-
Portable TDS System (Retrofit Kit): Designed for upgrading existing standard rotary rigs. This package includes the power swivel unit, a new mast rail assembly, and a dedicated control rack. It transforms your existing rig into a modern top-drive system for a fraction of the cost.
-
Mobile TDS Trailer: Specially designed for fast-moving workover or shallow drilling units. The TDS unit and its power pack are mounted on a heavy-duty trailer, allowing the unit to drive right up to the mast and connect within hours.
Why Choose Sinopec's Top-Drive Drilling Rigs?
If you are a field engineer or drilling contractor focused on reducing hidden costs like stuck pipe and safety incidents, choosing the right Top Drive system is the most impactful decision.
-
Integrated Drilling Ecosystem: Unlike bolt-on systems from different vendors, our TDS is designed in-house with our drilling rigs. This means the mast structure is pre-engineered to handle the TDS weight, and the control logic is harmonized with the auto-driller and mud system—one integrated "drill bus" from Sinopec.
-
Designed for Realistic Torque: We've analyzed data from thousands of wells. Our TDS systems are engineered with a "torque reserve"—they deliver their rated torque continuously, not just in peaks. This means you won't stall the motor when you hit a tight spot.
-
Global Service & Spare Parts: We maintain a repository of TDS-specific wear parts (bearings, seals, torque wrenches) at key hubs. When you need a new rail or a drive motor, it ships fast.
-
Compliance with API 7K: Our systems are designed and tested according to API 7K specifications for drilling equipment, ensuring your safety and regulatory compliance on international projects.
Frequently Asked Questions (FAQ)
Q: What is the main difference between a Top-Drive rig and a standard Rotary Table rig?
A: A top drive moves with the drilling string. It hangs from the mast and rotates the string from the top at any point during drilling or tripping, allowing continuous rotation. A rotary table sits on the floor and rotates the string from the bottom, forcing you to stop rotation to make connections. The top drive thus offers superior well control and stuck pipe mitigation.
Q: Do you offer electric or hydraulic TDS?
A: We offer both. Electric AC VFD (our standard offering) provides more accurate speed and torque control and is easier to interface with modern digital controls. Hydraulic TDS offers higher initial torque and is often more robust for severe shock loads or heavy jarring operations. Our sales team can help you choose based on your specific well plans.
Q: Can your TDS be installed on an existing older Sinopec rig?
A: Yes, absolutely. We offer a Retrofit End-to-End Package. This includes all necessary mast modifications (new rails, structural reinforcement), the TDS unit, a power unit (generator or electrical cabinet), and the driller's control interface. We also provide on-site commissioning training for your crew.
Q: What is the advantage of a TDS for directional drilling?
A: A TDS allows for continuous rotation while sliding is required only for changing the toolface. This greatly reduces drillstring drag and allows for more efficient slide drilling compared to a rotary table. It is a game changer for managing torque in horizontal and ERD wells.
Q: How do I maintain the TDS and its guide rails?
A: We provide a comprehensive maintenance manual and recommended spare parts list. The rails require periodic lubrication, and the TDS unit's interior (gearbox, motors) needs inspection based on hours of operation. Our remote service team can assist with diagnostic checks and schedule preventative maintenance visits.
Tag: Petroleum drilling rig series | Modular oil drilling rigs | Containerized drilling rigs | Fast installation drilling rigs | Offset Drilling Rig
