Automatic Column Conveying

Technical Specifications

Product Types & Configurations

We offer three standard models plus full custom builds for unusual catwalk layouts or existing pipe handling systems.

Optional add‑ons:

• Pipe counter & RFID reader – automatically logs each joint ID and length

• Wireless remote control – operate from anywhere on the rig floor (150m range)

• Camera system – two cameras (rack side + v‑door) with monitor on control console

• Heated hydraulic tank – for arctic operations

• Explosion‑proof kit – ATEX / IECEx Zone 1 or Zone 2

Application Areas

[Insert Product Image 04: System working on a desert rig with pipe rack in background]

Land drilling rigs (1500m – 7000m) – The most common application. Replaces the traditional catwalk chain and manual pipe handling. Reduces required floor crew from four to two for pipe moving operations. One customer in Oman reported zero back injury claims in three years after installation.

Offshore jack‑up and platform rigs – Space is tight, and manual handling is even more dangerous. Our modular skids fit through standard platform hatches. The wireless remote lets the driller control pipe transfer without leaving the cabin. Several units running on jack‑ups in the North Sea and Persian Gulf.

Workover & snubbing units – Frequent pipe trips, small crews, high fatigue. The ACC-100 is light enough to be moved by a pickup truck and set up alongside a workover rig in less than two hours. Ideal for remote well servicing.

Pipe storage yards & supply bases – Not just for rigs. We have supplied stationary conveyors to pipe yards for loading/unloading trucks and racks. The same system moves casing from storage to inspection line to shipping truck – saves forklift passes and manual rolling.

Arctic & cold climate drilling – Low‑temperature hydraulic package (synthetic fluid, heated tank, insulated hoses) keeps the conveyor running at -30°C while manual handling becomes impossible. Several units active in the Yamal Peninsula and Northern Canada.

Why Choose SJ Petroleum Machinery Co., Ltd.?

1. We understand real rig workflows – Our engineers spent months on actual rig floors before designing this conveyor. The control logic, safety interlocks, and maintenance access are all based on what drillers actually need, not what looks good on a PowerPoint.

2. Built tough for remote locations – No cheap Chinese components. We use Danfoss hydraulic valves, Parker hoses, Siemens PLCs, and our own structural steel fabricated in ISO‑9001 certified shops. The conveyor trough is 10mm abrasion‑resistant steel – it will outlast your rig’s catwalk.

3. Easy retrofit – no rig modifications – Most systems just bolt onto your existing catwalk side rails. We provide adaptor plates for common catwalk brands (Dreco, NOV, Weatherford). If you have a weird layout, we send an engineer or a 3D scanner to map it before fabrication.

4. Global service network with local hubs – Spares stocked in Dubai, Houston, Singapore, and Aberdeen. Field service technicians available for installation supervision, training, and emergency repairs. 24/7 remote support via video call – we talk you through any issue.

5. Quick ROI from day one – Reduce crew size by 1–2 people per shift. Eliminate most pipe‑handling injuries (and their associated insurance costs and lost time). Increase tripping speed by 15–20% because you never wait for a manual catwalk to untangle a snagged pipe. Typical payback period: 6–12 months depending on local labor rates.

Frequently Asked Questions (FAQ)

Q1: Can this be installed without taking the rig out of service for a long time?
Yes. The installation is modular. We pre‑assemble and test the entire system at our factory. On your rig, you simply bolt down the skids, connect hydraulic hoses and electrical cables, and mount the control console. Typical downtime: 8–12 hours during a routine maintenance day or between wells.

Q2: Does it handle both single joints and double/triple stands?
The standard ACC-100/200 handles single joints up to 14m. For stands (double or triple), we offer an extended trough version (up to 28m) with powered intermediate supports. You must specify your maximum stand length when ordering.

Q3: What happens if a pipe gets stuck mid‑convey?
The load sensor detects abnormal resistance and automatically stops the conveyor. The control screen shows "Jam at Zone 3”. You reverse the conveyor slightly (one button), clear the obstruction manually if needed, then resume. The system also has an emergency stop pull‑cord along the full length of the trough.

Q4: Can one person operate it alone?
Absolutely. The standard pendant control allows a single operator to load from the rack switch, convey, tilt, and unload at the v‑door. The wireless remote gives even more freedom – walk alongside the pipe as it moves. Many customers assign one floor hand to run the conveyor while another handles the elevators and slips.

Q5: Is training difficult?
No. The control logic is intuitive: one joystick moves the pipe forward/back, one button raises/lowers the tilt, another button operates the rack arm. Most crews become comfortable within two hours. We provide a half‑day on‑site training for up to six operators, plus a laminated quick‑reference card.

Q6: Can it work with my existing hydraulic power unit instead of the one you supply?
Yes, but we recommend using our HPU because the flow and pressure are matched to the conveyor's valve stack. If you want to integrate with your rig’s existing hydraulic system (e.g., from the drawworks or catworks), we can supply just the control manifold and cylinders. Provide your HPU specs (flow rate, pressure, oil type) and we will design adaptors.

Q7: What about maintenance?
Daily: visual check of hoses and hydraulic oil level. Weekly: grease the conveyor roller bearings and rack arm pivot points (eight grease fittings). Monthly: inspect chain tension (if chain drive model) and tighten as needed. Every 2000 hours: replace hydraulic filter and check cylinder rod seals. Full spares kit (seals, filters, sensors) included with every new system.

Q8: Do you offer a lease or rental option?
Yes. For short‑term projects or trial periods, we offer 6‑month or 12‑month rental agreements with option to purchase. Maintenance and support included in the rental fee. Contact our rental desk for a quote.

Q9: Can I see one working before buying?
We have reference installations in five countries. We can arrange a video call with the operator at a customer site (subject to their permission) or a factory demo at our facility in Jingzhou, China. We also have an unedited 4‑minute field video showing the conveyor moving 5‑1/2″ drill pipe from rack to rig floor – available on request.

Q10: What is the warranty?
24 months from shipment or 5000 operating hours, whichever comes first. Covers all mechanical, hydraulic, and electrical components except wear parts (seals, filters, hoses, chain). On‑site warranty service provided via our regional partners within 72 hours for critical failures.

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