Drilling and completion technology
Technical Specifications – Integrated Technology Parameters
ZJ Series AC VFD Drilling Rigs (Drilling Phase)
| Parameter | ZJ40 | ZJ50 | ZJ70 | ZJ90 |
|---|---|---|---|---|
| Nominal depth (4‑½″ DP) | 2,500–4,000 m | 3,500–5,000 m | 4,500–7,000 m | 6,000–9,000 m |
| Max hook load | 2,250 kN | 3,150 kN | 4,500 kN | 6,750 kN |
| Drawworks power | 735 kW | 1,100 kW | 1,470 kW | 2,210 kW |
| Mud pumps | 2× F‑1300 | 2× F‑1600 | 2‑3× F‑1600 | 3× F‑1600 |
| Drive type | AC VFD | AC VFD | AC VFD | AC VFD |
| Automation ready | Yes | Yes | Yes | Yes |
Wellhead & Completion Equipment (Completion Phase)
| Equipment Type | Pressure Range (psi/MPa) | Bore Size (in) | Material Class | API Standard |
|---|---|---|---|---|
| Casing head / spool | 2,000–15,000 / 14–105 | 7‑1/16″ – 13‑5/8″ | AA‑HH | API 6A PSL 2‑4 |
| Tubing head | 2,000–15,000 / 14–105 | 2‑1/16″ – 7‑1/16″ | AA‑HH | API 6A PSL 2‑4 |
| Christmas tree | 2,000–15,000 / 14–105 | 2‑1/16″ – 7‑1/16″ | AA‑HH | API 6A PSL 2‑4 |
| Choke & kill manifold | 5,000–15,000 / 35‑105 | 2″ – 5″ | DD‑HH | API 16C PSL 3‑4 |
| Fracturing manifold skid | 10,000–20,000 / 70‑140 | 3″ – 4″ | DD‑EE | API 6A PSL 3‑4 |
Product Types – Technology Categories
SJ Petro's integrated drilling and completion technology covers four major product categories:
| Category | Primary Products | API Standards |
|---|---|---|
| Drilling & workover rigs | ZJ series AC VFD rigs (ZJ40‑ZJ90), XJ series workover rigs (XJ150‑XJ1200), desert rigs, Arctic rigs | API 4F, 7K, 8C, Q1 |
| Wellhead & fluid control | Wellhead assemblies, Christmas trees, choke & kill manifolds, fracturing manifolds, plug valves, gate valves | API 6A, 16C |
| Cementing & fracturing equipment | Cementing units, fracturing fleets, coiled tubing units, SOFElink® control platform | API 6A, 16C, Q1 |
| Downhole tools (Kingdream) | PDC bits, roller cone bits, hybrid bits, downhole motors, drilling jars, stabilizers, NMDCs, fishing tools | API Spec 7‑1, 7‑2, 7K |
Application Fields – Integrated Technology in Action
Conventional Onshore Wells (Vertical & Directional)
For standard land wells, SJ Petro's integrated technology stack provides the ZJ series drilling rig (2,500‑9,000 m depth), Kingdream PDC or roller cone bits matched to formation type, downhole motors for directional control, API 5CT casing and tubing for well integrity, and wellhead equipment for surface flow control.
Unconventional Shale & Tight Gas
Horizontal laterals and multi‑stage fracturing demand advanced technology: high‑torque downhole motors (7:8 or 9:10 lobe configurations, long‑type), hybrid bits for interbedded formations, fracturing manifold skids rated to 20,000 psi, and automated pipe handling systems to reduce non‑productive time.
Offshore Platform & Subsea Wells
Offshore operations require marine‑grade materials, explosion‑proof electrical systems, and API 6A subsea wellhead equipment. SJ Petro has supplied equipment to Phillips, Kerr‑McGee, Nanbao, Weizhou platforms and the Luda 6000m modular rig.
Arctic & Permafrost Cluster Drilling
Low‑temperature technology is essential: impact‑tested steel, cold‑hardened seals, heated enclosures. SJ Petro has delivered 11 low‑temperature rigs to Rosneft operating at -45°C, with integrated completion equipment rated for the same extreme environment.
Desert & Remote Arid Regions
High‑temperature desert rigs with 10×10 all‑wheel drive chassis, forced cooling systems, and heavy‑duty sand filtration keep drilling when standard equipment overheats and clogs. SJ Petro has delivered desert rigs to Libya and other Sahara region operators.
HP/HT & Sour Gas Wells
For high‑pressure, high‑temperature (HP/HT) and sour gas wells (H₂S up to 20%), SJ Petro supplies wellhead equipment in material classes EE‑HH (corrosion‑resistant alloys, NACE MR0175 compliant), P110 and Q125 grade casing, and PR2‑validated choke and kill manifolds.
Why Choose SJ Petro for Drilling and Completion Technology?
Backed by Sinopec – State‑Owned Manufacturing Enterprise
SJ Petro is a wholly‑owned subsidiary of Sinopec Oilfield Equipment Corporation, a China Critical Technological Equipment Nationalization Base and National Hi‑tech Enterprise. This provides financial stability, supply chain consistency, and long‑term engineering support that independent manufacturers cannot match.
Full API Certification – Drilling & Completion Under One Quality Standard
SJ Petro maintains API monogram licenses across all technology categories: API 4F, 7K, 8C, 6A, 16C, Q1 and Spec 7‑1. Third‑party inspection (BV, SGS, DNV, ABS) is welcome at any manufacturing stage.
National‑Level Low‑Temperature Testing Laboratory
One of China's few national‑level low‑temperature impact testing laboratories qualifies materials down to -60°C. This capability is critical for Arctic drilling and completion equipment.
One Manufacturer, One Quality Standard, One Warranty
From the drilling rig at surface to the downhole motor, drill bit, casing string, wellhead, Christmas tree, and fracturing manifold, SJ Petro's integrated technology stack eliminates the fragmentation of multi‑vendor supply chains.
Global Export Track Record – Over 30 Countries
SJ Petro equipment operates in over 30 countries, with documented export performance to Russia (102 rigs), North and South America (113 rigs), the Middle East and North Africa (49 rigs), and Southeast Asia (33 rigs).
Record‑Setting Field Performance
-
5,818‑metre "one‑trip drilling” – Tarim Basin, China (PDC bit + high‑torque motor)
-
>20% ROP improvement – Kuwait Oil Company carbonate reservoirs (hybrid bits)
-
2,252 metres single‑bit run – Kazakhstan (50.13% above block average)
-
11 low‑temperature rigs to Rosneft – Proven Arctic performance
Frequently Asked Questions (FAQ)
Q1: What is the difference between drilling technology and completion technology?
A: Drilling technology focuses on penetrating the earth's crust to reach the target reservoir—including rigs, bits, downhole motors, mud systems, and casing running equipment. Completion technology focuses on preparing the well for production—including wellhead equipment, Christmas trees, tubing, packers, flow control valves, and fracturing/stimulation systems. Integrated technology ensures both phases work seamlessly together.
Q2: Does SJ Petro provide both drilling rigs and wellhead equipment under the same API certification?
A: Yes. SJ Petro holds API 4F, 7K and 8C for drilling rigs and hoisting equipment, and API 6A and 16C for wellhead, valve and choke/kill systems. All products are manufactured under the same quality management system (API Q1).
Q3: What temperature range can SJ Petro's low‑temperature drilling and completion equipment handle?
A: Low‑temperature technology is rated for continuous operation at -45°C and storage to -60°C. This includes drilling rigs, downhole tools, wellhead equipment, and control systems. All materials are impact‑tested in SJ Petro's national‑level low‑temperature laboratory.
Q4: Can SJ Petro supply wellhead equipment for HP/HT and sour gas wells?
A: Yes. SJ Petro manufactures API 6A wellhead equipment in material classes from AA (non‑corrosive) through HH (severe sour service up to 20% H₂S). Pressure ratings range from 2,000 psi to 20,000 psi (14‑140 MPa), with PSL 2 through PSL 4 product specification levels.
Q5: What is the maximum depth capacity of SJ Petro drilling rigs?
A: ZJ series rigs cover drilling depths from 2,500 metres (ZJ40) up to 9,000 metres (ZJ90) with 4‑½″ drill pipe. Custom engineering is available for depths beyond 9,000 metres.
Q6: Do you provide automation for the drill floor and well control systems?
A: Yes. SJ Petro rigs are available with fully automated pipe handling (iron roughneck, power catwalk, hydraulic elevator, power slips) and integrated HMI control. Choke and kill manifolds can be equipped with remote actuation and position feedback.
Q7: What certifications are included with SJ Petro's drilling and completion technology shipments?
A: Each shipment includes API monogram license documentation, material test reports (mill certificates), dimensional inspection records, NDT (MPI/UT) inspection reports, hydrostatic test certificates, and a certificate of conformance. Third‑party witnessed testing is available.
Q8: What is the typical lead time for an integrated drilling and completion equipment package?
A: For a complete ZJ series drilling rig with API 6A wellhead package, lead time is 8‑12 months depending on configuration. Standard wellhead and valve orders require 6‑8 weeks. Large fracturing manifold skids require 12‑16 weeks.
Q9: How does Kingdream downhole motor technology integrate with SJ Petro drilling rigs?
A: Kingdream downhole motors are designed to API Spec 7‑1 and 7K, with connections that match standard drill pipe threads. The same engineering team that designs the rig's top drive, mud pumps, and drawworks also provides the downhole motors—ensuring compatibility of flow rates, torque requirements, and control parameters.
Q10: How do I request a quotation for an integrated drilling and completion technology package?
A: Please provide the following information to our export sales team:
-
Well depth (metres or feet)
-
Formation type (soft, medium, hard, interbedded)
-
Environmental conditions (standard, Arctic -45°C, desert +55°C, offshore)
-
Completion requirements (tubing size, pressure rating, material class for H₂S/CO₂)
-
Any automation requirements (semi‑automated or fully automated drill floor)
We will respond within 3‑5 business days with a technical proposal and firm price quotation.
