Drill string conveying technology
Technical Parameters – Technology Capabilities
| Technology Feature | Specification / Performance |
|---|---|
| Pipe size detection accuracy | ±3 mm OD, via 3‑sensor ultrasonic array |
| Pipe length verification | ±100 mm, using sensor timing + encoder feedback |
| Anti‑swing settling time | < 0.5 seconds after stop (no operator intervention) |
| Acceleration profile | S‑curve, adjustable jerk limit (default 2 m/s³) |
| Load sensing response time | < 50 ms to re‑allocate flow |
| Control cycle rate | 100 Hz (PLC scan + hydraulic valve response) |
| Data logging rate | 10 Hz for all sensors, 1 Hz for long‑term trend storage |
| Remote connectivity | Ethernet / 4G cellular / satellite (BGAN) |
| Cybersecurity | VPN tunnel, password access levels (operator, supervisor, admin) |
| Diagnostic storage | Last 1,000 events (time‑stamped, with sensor snapshots) |
| Predictive algorithms | Wear trends: cylinder seals, chain, pump, sensors |
| Safety performance | PLr = e (ISO 13849‑1), SIL 2 capable |
| Update capability | USB or remote firmware upgrade |
Technology Packages – Choose Your Level of Intelligence
| Package | Core Technologies | Best For |
|---|---|---|
| Basic Control | Manual joystick, local panel only, no sensors | Budget retrofit, simple operation |
| Smart Conveyor | Auto pipe size detection, anti‑swing, load monitoring | Standard land rigs wanting efficiency & safety |
| Pro Conveyor | All of above + remote diagnostics, predictive maintenance, fleet dashboard | Multi‑rig operators, HSE‑focused companies |
| Offshore / Ex | All Pro features + explosion‑proof sensors, ATEX PLC, marine connectivity | Jack‑up / platform rigs |
| Autonomous Conveyor | Full integration with rig control system, auto‑cycle without operator intervention | Fully automated pad rigs (future‑ready) |
Applications – Where Our Technology Shines
| Operational Scenario | Technology Enabled Benefit |
|---|---|
| Frequent pipe size changes (e.g., casing after drill pipe) | Auto‑detection & reconfiguration – no manual adjustments, no downtime |
| Night shift / low visibility | Ultrasonic sensing works in total darkness; remote operation from heated cabin |
| High wind conditions | Anti‑swing algorithm keeps pipe stable; automatic slowdown if gust detected |
| Untrained crew / high turnover | Guided cycles, error‑proofing, overload protection reduce human error |
| Offshore / cramped deck | Remote diagnostics eliminate unnecessary technician visits; compact sensors |
| Multi‑rig contractor | Fleet analytics identify best‑performing rigs; transfer settings to others |
| Extreme temperatures (–45°C or +55°C) | Sensor heaters (arctic) or cooling (desert) versions available; consistent performance |
Why Choose SJ Petro for Drill String Conveying Technology?
1. Technology Born from 150+ Field Deployments
Our algorithms are not developed in an air‑conditioned lab. They were refined on Sinopec’s own rigs over millions of pipe cycles – in desert heat, arctic cold, and offshore salt spray. We know what works and what breaks.
2. Open Architecture – No Proprietary Lock‑in
Our PLC code is documented, and we provide the full program backup. You are not forced to come to us for every parameter change. Your own technicians can be trained to modify speeds, pressures, and logic. We believe in empowering our customers.
3. Continuous Improvement Through Over‑the‑Air Updates
When we develop a better anti‑swing algorithm or a new diagnostic feature, we can push it to your system remotely (with your approval). Your equipment gets better over time, not obsolete.
4. Unmatched Safety Record
Across 150+ systems, zero lost‑time incidents attributed to our technology. Our safety interlocks have prevented dozens of potential injuries – we have the incident reports to prove it.
5. Lifetime Technical Support
We don’t disappear after the sale. Our helpdesk is staffed 24/7 by engineers who know the technology inside out. Average response time: under 2 hours.
6. Backed by Sinopec’s R&D Power
Our technology roadmap is supported by Sinopec’s centralized research institute. Current projects include:
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AI‑based pipe condition monitoring (detect cracks or wear from vibration signature)
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Full autonomy (conveyor decides when to index next pipe based on iron roughneck feedback)
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5G remote operation (drill from an office 500 km away)
When you buy from us, you get access to this pipeline of innovation.
FAQ – Drill String Conveying Technology
Q1: How does your pipe size detection work – and how accurate is it?
A: Three ultrasonic sensors mounted along the catwalk measure the pipe’s shadow. The PLC averages the readings and matches against a stored table of standard pipe ODs (2‑3/8″ to 20″). Accuracy is ±3 mm. For non‑standard sizes, the system can be taught manually.
Q2: Can the anti‑swing algorithm handle pipe lengths over 13m (Range 3)?
A: Yes. The algorithm uses pipe length (from sensor data) to calculate the natural frequency. The damping is adjusted dynamically. On a 14m catwalk with 13.5m pipe, residual swing is under 2 cm at stop – no crew needed to grab.
Q3: What happens if a sensor fails? Does the system stop working?
A: The system falls back to a safe "manual” mode – operator can still use joysticks, but auto‑cycle and anti‑swing are disabled. An error message appears on the HMI. Replacement sensors are hot‑swappable (plug‑and‑play) and available from our regional hubs.
Q4: Can I retrofit your technology onto an existing manual catwalk from another manufacturer?
A: Partially. We can replace the control panel, add sensors, and install our PLC and remote pendant. However, the hydraulic valves must be proportional (not just on/off) to support anti‑swing and S‑curve acceleration. If your existing system uses simple directional valves, we would need to replace the valve block – still possible, but cost may be 50‑70% of a new system.
Q5: How secure is your remote access? Can someone hack my rig?
A: Remote access is through an encrypted VPN tunnel with two‑factor authentication (password + time‑based token). You control when we are allowed to connect. We do not have persistent access. For customers with strict cybersecurity policies, we can provide a local‑only system (no modem) or a read‑only diagnostic port.
Q6: What training do you provide on the technology side (not just operation)?
A: For maintenance technicians and supervisors, we offer a 2‑day technology course covering: PLC logic overview, sensor calibration, hydraulic tuning, remote diagnostics access, and predictive maintenance interpretation. Course available at your site or our training center in Jingzhou.
Q7: How often do you release software updates? Are they free?
A: Minor updates (bug fixes, parameter improvements) are free and pushed remotely annually. Major updates (new features, algorithm upgrades) are optional and may have a nominal fee after the warranty period. We always provide release notes and give you the choice to update or not.
Q8: Can your technology integrate with my rig’s existing control system (e.g., NOV, Siemens)?
A: Yes. Our PLC communicates via Modbus TCP (Ethernet) or Profibus. We can share status signals (pipe ready, cycle complete, fault) and receive commands (start cycle, pipe size selection). For full integration (e.g., conveyor triggered by iron roughneck torque reading), we would need a site‑specific engineering study – typically a week of work.
