manifold system

Technical Specifications – Representative Manifold Systems

Parameter	Choke & Kill Manifold	Mud Manifold	Fracturing Manifold	Cementing Manifold
Pressure Rating	35–105 MPa	21–35 MPa	70–140 MPa	35–70 MPa
Nominal Bore	2-1/16″ – 4-1/16″	3″ – 5″	2″ – 4″	2″ – 3″
Number of Choke Stations	2–4 (manual or hydraulic)	N/A	4–8 zipper connections	1–2 cement head outlets
Valve Types	Gate valves, plug valves, choke valves	Gate valves, plug valves	Hydraulic plug valves	Plug valves, check valves
End Connections	API 6A flanges, Fig 1502/2002 unions	Fig 1002/1502 unions	Fig 1502/2002 unions	Fig 1502 unions, API flanges
Skid Dimensions (typical)	4m x 2.5m x 2m	3m x 2m x 1.8m	6m x 2.5m x 2.2m	3.5m x 2m x 1.8m
Skid Weight (approx)	8–15 tons	5–8 tons	12–25 tons	5–10 tons
Actuation Options	Manual, hydraulic, or pneumatic	Manual or pneumatic	Hydraulic (remote)	Manual or pneumatic
API Monogram	16C	6A / 7K	6A / 16C	6A
Temperature Range	-46°C to +121°C	-29°C to +121°C	-29°C to +121°C	-29°C to +121°C
Sour Service	NACE MR0175 (optional)	NACE MR0175 (optional)	NACE MR0175 (standard for trim)	NACE MR0175 (optional)

Applications – Where SJ Manifold Systems Are Used

Application	Primary Manifold	Typical Users
Offshore drilling – fixed platform	Choke & kill, mud, standpipe	Drilling contractors, oil company drilling departments
Land drilling – deep wells	Choke & kill, mud	Land drilling contractors, deep well exploration
Workover operations	Choke & kill (light), mud	Workover contractors, production departments
Hydraulic fracturing – multi-well pads	Fracturing manifold (zipper frac)	Frac service companies, shale operators
Cementing – primary & squeeze	Cementing manifold	Cementing service companies
Well testing & flowback	Well test manifold	Testing service companies, production testing
Well control (BOP) systems	BOP control manifold	Drilling contractors, well control specialists
FPSO / offshore production	Production test manifold	FPSO operators, production companies
Geothermal drilling	Choke & kill, mud manifolds	Geothermal drilling contractors

Field-Proven Installations

• Bohai Bay, China (Offshore): SJ choke & kill manifolds on 12 fixed platform drilling rigs – all API 16C monogrammed, remote hydraulic choke controls from driller's cabin.

• Kuwait (Land deep drilling): Choke & kill and mud manifolds for ZJ90DB 9,000m rigs – desert-rated, 50°C ambient.

• South China Sea: Fracturing manifold for multi-well stimulation from a fixed platform – 105 MPa, 8-zone zipper frac configuration.

• Saudi Arabia: Ultra-large diameter pipe manifolds (2,032mm ID) for seawater desalination – 100% qualification rate, delivered ahead of schedule.

• North America (Shale): 140 MPa fracturing manifold with remote hydraulic plug valves and integrated pump headers – 24-hour continuous operation.

OEM Customized Solutions – We Build to Your Flow Sheet, Not a Catalog

Manifold systems are almost never off-the-shelf. Your well control philosophy, pump configuration, platform layout, and operating pressures are unique. SJ treats every manifold order as a custom engineering project.

What we customize:

Your Requirement	Our Engineering Response
Specific pressure rating	Any rating from 21 MPa to 175 MPa (25,000 psi)
Non-standard valve arrangement	We draw your P&ID – then build it. 2 choke stations? 4? In parallel or series? Your choice.
Special connection types	Any hammer union (602/1002/1502/2002), any API flange size and rating, any thread (NPT, BSP, metric), weld ends
Compact footprint for tight decks	Vertical stack manifolds, narrow skids (as little as 1.5m wide), foldable work platforms
Remote actuation & automation	Hydraulic, pneumatic, or electric actuation on any valve. Full control panel integration – local or remote (4-20 mA, digital bus, or fiber)
Integration with existing controls	We interface to your existing control system – match valve position feedback, pressure transmitter signals, and emergency shutdown protocols
Sour service (H₂S)	NACE MR0175 / ISO 15156 complete – all wetted parts hardness controlled, corrosion-resistant alloys
Arctic or desert environment	Low-temp materials and lubricants, or high-temp seals and sunshades – as required
Reverse-engineered drop-in replacement	We measure your existing manifold. The new one bolts up exactly. No re-piping.
Modular split for crane limits	One manifold becomes two or three skids with pre-tested jumpers – each skid within your crane capacity

Our engineering process:

Step 1 – Define: You send operating pressures, flow rates, fluid type (mud, frac, cement, gas), P&ID sketch, connection points, and space constraints.

Step 2 – Design: Our manifold engineering team (dedicated HP manifold group within our High Pressure Manifold Research Room) produces 3D model, structural drawings, and bill of materials. We share models in Navisworks or STEP format.

Step 3 – Approve: Joint review – adjust valve locations, actuator types, skid dimensions.

Step 4 – Fabricate: Machining, welding, assembly on dedicated manifold production line. All valves manufactured in-house.

Step 5 – Test: Full assembly pressure test (1.5x working). Control system function test. Your inspector or third-party agency can witness.

Step 6 – Document: Complete traceability package – material certs, NDE reports, pressure test records, API monogram certificates.

Step 7 – Ship: Skid-mounted, protected for sea freight or trucking. On-site commissioning available.

Why Choose SJ Petroleum Machinery for Manifold Systems?

Reason	What You Actually Gain
Sinopec Group backing	Core equipment manufacturing enterprise of China Petrochemical Corporation. We’re not a small fab shop. Founded 1941, 2,000+ employees, 663,000 m² campus.
API 6A & 16C certified – first in China for 16D	We hold API monograms for 4F, 6A, 7K, 8C, and 16C. First Chinese manufacturer to obtain API 16D license for choke and kill manifolds.
Complete in-house manufacturing	We cast, forge, machine, weld, test, and assemble – all under one roof. 2,100+ precision machines. No outsourced critical components.
50,000 m² rig assembly yard	24 rig-up positions, 750-ton test capacity. We can build and test 12 manifolds simultaneously.
150,000 high pressure manifolds annual capacity	We have the production volume to meet large fleet orders and quick turnarounds.
Full traceability – heat number to test record	Every pressure-containing component tracked. Your inspector can audit our manufacturing and test records.
Global service and spares	Spare valves, trim kits, and seals stocked in Houston, Dubai, and Singapore. 24/7 technical support. Field service engineers available worldwide.
Third-party inspection welcome	DNV, ABS, Lloyd's, CCS, or your own inspector – we work with all major classification societies.

Frequently Asked Questions (FAQ)

Q1: What is the difference between a manifold and a simple pipe spool assembly?

A: A manifold is an engineered system with multiple valves, instruments, and flow paths designed for a specific control function (e.g., choke & kill, fracturing distribution). A pipe spool is just a fabricated section of pipe. SJ builds complete manifolds – not just spools.

Q2: What API certifications apply to your manifold systems?

A: API 16C (choke and kill manifolds) and API 6A (wellhead components including manifolds). We also hold API 4F, 7K, and 8C for related drilling equipment.

Q3: Can you build a manifold to my P&ID?

A: Yes – send us your P&ID, pressure rating, connection types, and space envelope. We'll convert it into a 3D model and build exactly to your flow sheet.

Q4: What is the typical lead time for a custom manifold system?

A: Standard custom manifold (4-6 valve stations, moderate pressure): 12–16 weeks. Large fracturing manifold (8+ stations, high pressure, full actuation): 20–24 weeks. Rush options available.

Q5: Do you offer remote-operated choke manifolds?

A: Yes – all our choke & kill manifolds can be supplied with hydraulic remote choke actuators, control panel with pressure gauges, and position indicators. We also supply electronic control systems with 4‑20 mA feedback.

Q6: How do you handle sour service (H₂S) requirements?

A: We manufacture to NACE MR0175 / ISO 15156. Hardness-controlled carbon steel bodies, stainless steel or Inconel trim, special elastomers. Full documentation provided.

Q7: Can you supply a manifold that fits inside a shipping container?

A: Yes – we design manifold skids to fit ISO 20' or 40' container internal dimensions. For larger manifolds, we split into multiple container-sized skids with interconnecting jumpers.

Q8: What documentation do you provide with a manifold system?

A: Complete traceability package: mill certificates, dimensional reports, NDE reports (MT, UT, PT), pressure test certificates, API monogram certificates, as-built drawings, and component operation manuals.

Q9: Do you provide on-site installation and commissioning?

A: Yes – our field service engineers can supervise manifold placement, connection, pressure testing, and control system setup. Typical on-site duration: 1–2 weeks.

Q10: How do I get a quote?

A: Email manifold@sjpetro.com with:

• Manifold type (choke & kill, fracturing, mud, cementing, etc.)

• Operating pressure (MPa or psi) and flow rate

• Number and type of valves needed (gate, plug, choke, check)

• Actuation requirement (manual, hydraulic, pneumatic, electric)

• Connection types and sizes (hammer union type, flange rating, thread)

• Any special environment (sour service, arctic, high temp, offshore)

• Skid dimension constraints (if any)

We'll respond within 7–10 working days with a technical proposal and budget estimate.

Tag: