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SJK675DB Jack-up drilling rig

SJK675DB Jack-up drilling rig

SJ Petroleum Machinery Co., Ltd., wholly-owned subsidiary of Sinopec Oilfield Equipment Corporation (SOFE), designs and builds land and offshore drilling & production equipment — offering complete integrated solutions backed by decades of field experience. With a manufacturing history tracing back to 1941. SJ has established itself as a Chinese backbone enterprise in petroleum drilling equipment, recognized as a National Hi-tech Enterprise and Critical Technological Equipment Nationalization Base.

Heavy-Duty Hook Load for Challenging Wells：The SJK675DB sits at the upper end of our jack-up platform rig series — flanked by the SJK450DB (4.500 kN) and SJK900DB (9.000 kN) — making it the go-to choice for operators bridging the gap between medium and ultra-heavy offshore drilling requirements. Whether you‘re running deep casing strings, managing high-overpull fishing operations, or drilling extended-reach wells from a cantilever, the SJK675DB gives you the headroom you need, not just the number on paper.

True Offshore Build — Not a Land Rig on a Boat：We don’t repurpose onshore designs. The SJK675DB’s mast, substructure, and skidding base use C5-M or higher marine-grade coatings and corrosion-resistant alloys throughout. Our engineering team built this rig specifically for the dynamic loads a jack-up platform experiences — wave-induced vibrations, leg-rack phase differences, and variable preload conditions. The K-type mast and adjustable substructure clearance ensure you can operate within the tight confines of a jack-up cantilever without compromising safety or performance.

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Technical Specifications – SJK675DB

Parameter Value
Rig Series / Type SJK Series Jack-up Platform Drilling Rig
Max Hook Load 6,750 kN (1,500,000 lbf)
Drawworks Rated Power 2,200 kW (3,000 hp)
Mast Type K-type offshore mast
Substructure Configuration Skid-mounted / Cantilever-adaptable
Control System Si-driller integrated (AC-VFD)
Marine Coating Grade C5-M or higher
Corrosion Protection Offshore-rated alloys throughout
Certifications Available API, ISO9001, HSE, plus optional ABS / DNV / BV / CCS upon request


Where the SJK675DB Excels

Our SJK675DB is designed for high-load, moderate-water-depth drilling scenarios where smaller rigs simply can't deliver:

  • Extended-reach drilling from cantilever jack-ups — 6,750 kN hook load lets you push further horizontally

  • Deep well programs — Run heavy casing strings without creeping toward your hook load limit

  • Heavy fishing and milling operations — High overpull capacity gives you room when things go wrong downhole

  • Batch drilling campaigns — Built for repetitive high-cycle lifting without premature wear

  • Platform workover and re-entry — Full drilling capability for major interventions

  • Wellhead platform support operations — Skidding system fits slot-type and cantilever jack-ups

The SJK675DB is currently in operation across Chinese offshore fields and export markets including North America and Southeast Asia.

Product Types – SJK Series Offshore Drilling Rigs

The SJK series includes three primary models covering the critical hook load range for jack-up applications:

Model Max Hook Load Drawworks Rating Typical Application
SJK450DB 4,500 kN (1,000,000 lbf) 1,470 kW (2,000 hp) Medium-depth drilling / workover
SJK675DB 6,750 kN (1,500,000 lbf) 2,200 kW (3,000 hp) Heavy drilling & extended reach
SJK900DB 9,000 kN (2,000,000 lbf) 4,413 kW (6,000 hp) Ultra-deep / high-overpull operations

Each model can be configured for fixed platforms (SJF series) or jack-up applications (SJK series), with DC or AC-VFD drive options available.

OEM & Customization Solutions for Your Platform

No two jack-up platforms are identical — different leg spacing, cantilever geometry, deck reinforcement, and preload capacities all affect how a drilling package integrates.

We customize every SJK675DB to your specific platform:

  • Mast height & substructure clearance — Engineered to fit under your cantilever and between leg chords

  • Skidding system interface — Customized to your platform's existing skid rails or requiring new design

  • Power integration — Matched to your jack-up’s generator capacity or freestanding power module

  • BOP handling system — Single or multi-ram, configured for your wellhead orientation

  • Top drive interface — Third-party top drive mounting (or our own) pre-engineered into the mast

  • Control system integration — Si-driller with optional remote monitoring and data logging

  • Classification society compliance — ABS, DNV, BV, CCS — we manage the certification process

How our custom process works: You provide us with your platform deck drawing and a drilling program outlining depth, hole size, and casing plan. Our in-house engineers — part of a 314-strong technical team with post-doctoral research capabilities — produce a fully integrated layout. We build, test, and FAT the entire package at our 50,000 m² yard (24 rig-up positions, 750-ton load test capacity), then deliver ready for deck installation.

Why Choose SJ for Your SJK675DB?

Sinopec Backing Wholly-owned subsidiary of Sinopec Oilfield Equipment Corporation — financial stability and technical depth you can trust
Heavy Manufacturing Capacity 100 drilling rigs + 100 workover rigs annual output. We build big, and we deliver on time
400+ Offshore Sets Delivered Not a newcomer. Our offshore equipment has been deployed across Bohai Sea, East China Sea, South China Sea, and exports to North America, Malaysia
Complete In-House R&D 314 technical personnel, post-doctoral station, national R&D platforms for cementing & fracturing equipment. No outsourcing of core engineering
Testing That Matches the Job 750-ton offshore commissioning site and 6,000 hp pump test center. We prove capacity before you pay
API / ISO / HSE Certified Full certification suite available. Optional ABS, DNV, BV, CCS upon request
Global Export Record Products in 40+ countries — North & South America, Russia, Middle East — backed by a reliable quality management system

Frequently Asked Questions

Q1: What's the difference between SJK, SJF, and SHXJ series?

A: SJK = Jack-up platform drilling rigs (self-elevating units). SJF = Fixed platform drilling rigs (permanent installations). SHXJ = Offshore workover rigs (lighter-duty intervention). The SJK675DB is our jack-up specific heavy-drilling model.

Q2: What water depth can the SJK675DB operate in?

A: The SJK675DB is the top-side drilling package — water depth is determined by the jack-up platform legs. However, we’ve supplied SJK series rigs for jack-ups operating in water depths from shallow (10 m) up to 90 m and beyond, with appropriate platform selection.

Q3: Can the SJK675DB be installed on an existing jack-up retroactively?

A: Yes — and we do this regularly. Provide us your platform deck drawings, leg spacing, cantilever dimensions, and available power. We'll engineer a skid-mounted package that minimizes welding and modifications to your existing deck.

Q4: Do you provide offshore commissioning and training?

A: Absolutely. Our field service engineers can sail to your jack-up location for installation supervision, system commissioning, and hands-on crew training. We can also provide remote technical support via our Si-driller telemetry interface.

Q5: What certifications can you supply for the SJK675DB?

A: Base certifications include API, ISO9001, and HSE. Upon request, we can obtain ABS, DNV, BV, or CCS certification for the complete drilling package — each skid, mast, and pressure component certified to the required classification society's rules.

Q6: Is the SJK675DB available with a top drive?

A: Yes — we can integrate most major top drive brands (including NOV, Canrig, or our own) into the mast design during manufacturing. Pre-drilled mounting points and control interfaces are included as part of the custom engineering package.

Q7: What’s the typical lead time for an SJK675DB?

A: Custom jack-up drilling packages like the SJK675DB typically require 10 – 14 months from engineering release to delivery, depending on certification requirements and third-party component lead times. Contact us with your project schedule for a firm date.

Q8: Do you supply spare parts for SJK series rigs?

A: Yes. We maintain a parts catalog for every SJK rig we build. Consumables and wear parts are stocked for rapid dispatch. For urgent offshore requirements, we can air-freight critical components directly to your onshore base or platform supply vessel.

Q9: How do I know the SJK675DB's 6,750 kN rating is real?

A: We test it. Our 750-ton load test site allows full mast and substructure proof-loading to API specifications before the rig leaves our yard. Customers are welcome to attend factory acceptance testing with their own third-party surveyors.

Q10: Can I visit SJ’s factory before ordering?

A: Yes — and we encourage it. Seeing the 50,000 m² yard, 24 rig-up positions, and the 750-ton test facility gives you confidence in our capability. Contact us to arrange an on-site audit.

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