BOP Stack

Assembly

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Stacked 18-3/4 in ram and annular preventers rated to 15,000 psi, controlled through two redundant multiplexed pods, that close in the well if it kicks.

Direct parts	8
Total parts	811
Used in	1 assembly
Class	Assembly

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Stacked 18-3/4 in ram and annular preventers rated to 15,000 psi, controlled through two redundant multiplexed pods, that close in the well if it kicks. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

BOP Stack parts and their functions

8 top-level parts · 811 parts in total · full bill of materials below

BOP Stack parts diagram: 1 ram preventer, 2 annular preventer, 3 BOP control pod, 4 wellhead connector, 5 subsea accumulator bottle, 6 bonnet bolt set, 7 shuttle valve, 8 o-ring set. 811 parts in 8 top-level items. — BOP Stack parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Ram Preventer 4 parts	4×	Pipe, casing, blind-shear rams
2	Annular Preventer 3 parts	2×	Doughnut-shaped elastomer packer that squeezes closed around any pipe size or the open hole when its piston is driven up.
3	BOP Control Pod 5 parts	2×	Redundant blue/yellow MUX pods
4	Wellhead Connector	1×	Hydraulic collet connector locking the BOP stack onto the subsea wellhead high-pressure housing.
5	Subsea Accumulator Bottle	48×	Subsea closure accumulators
6	Bonnet Bolt Set	240×	Ram bonnet stud sets
7	Shuttle Valve	60×	Function shuttle valves
8	O-Ring Set	120×	Ram, bonnet and connector seals

3D model

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Build & assembly graph

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Bill of materials for BOP Stack

8 top-level lines · 24 rows shown · 811 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Ram Preventer 4 parts	drillship-ram-preventer	4×	4	27	assembly
1.1	Ram Body	drillship-ram-body	1×	4	·	part
1.2	Ram Block	drillship-ram-block	2×	8	·	part
1.3	Hydraulic Cylinder 4 parts	drillship-hydraulic-cylinder	2×	8	8	assembly
1.3.1	Cylinder Barrel	drillship-cylinder-barrel	1×	8	·	part
1.3.2	Piston Rod	drillship-piston-rod	1×	8	·	part
1.3.3	O-Ring Set	oring-set	4×	32	·	part
1.3.4	Oil Seal	oil-seal	2×	16	·	part
1.4	O-Ring Set	oring-set	8×	32	·	part
2	Annular Preventer 3 parts	drillship-annular-preventer	2×	2	8	assembly
2.1	Annular Packing Element	drillship-annular-packer	1×	2	·	part
2.2	Annular Piston	drillship-annular-piston	1×	2	·	part
2.3	O-Ring Set	oring-set	6×	12	·	part
3	BOP Control Pod 5 parts	drillship-control-pod	2×	2	109	assembly
3.1	Pod Valve Block	drillship-pod-valve-block	1×	2	·	part
3.2	Solenoid Coil	drillship-solenoid-coil	36×	72	·	part
3.3	Shuttle Valve	drillship-shuttle-valve	30×	60	·	part
3.4	Subsea Electronics Module	drillship-subsea-electronics	2×	4	·	part
3.5	O-Ring Set	oring-set	40×	80	·	part
4	Wellhead Connector	drillship-wellhead-connector	1×	1	·	part
5	Subsea Accumulator Bottle	drillship-bop-accumulator-bottle	48×	48	·	part
6	Bonnet Bolt Set	drillship-bonnet-bolt	240×	240	·	part
7	Shuttle Valve	drillship-shuttle-valve	60×	60	·	part
8	O-Ring Set	oring-set	120×	120	·	part

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Where the BOP stack is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Oil, Gas & Process 1 Deepwater Drillship

Used in 1 assembly

BOP & Handling System

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks