Subsea Systems
Capital-intensive extraction and processing programs where safety, regulation, and supply chain complexity define execution.
This interactive experience is the shipped product itself — the same application code customers run in production, mounted read-only in your browser over a real sample journey. Not a video, not a mockup: because the demo and the product are one codebase, it can never drift from the real thing.
Inside this journey
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Field Development Discovery
Align on sanction timing, vessel weather windows, stakeholders, success metrics (first-oil date, reliability targets), and critical schedule dependencies.
Discovery Questions
Quick project snapshot
- Tell me the project's name or identifier and the quarter or month the field development was sanctioned.
- When is your target first-oil date?
- What is the primary development host type and water depth range for this field?
- Which pressure rating does your subsea production system need to meet?
- Walk me through the planned installation season or vessel window that you cannot miss.
- Is there a single factual constraint that would stop this project from moving forward today?
If a delivery slips, where does the pain land?
- If a critical subsea equipment delivery slips by three months, what single program outcome would force you to rebaseline the whole project?
- How many weeks of vessel weather window do you have in your primary installation campaign?
- Who on your team owns the decision to extend or compress the installation scope if equipment is delayed?
- Describe the financial consequence you attribute to missing the planned vessel window, in either $ or schedule terms.
- Identify one scheduling or contractual blocker that would make you stop awarding an equipment contract today.
Who's watching the clock and what will they require?
- Which executive committee or approver has veto power over schedule changes, and what evidence would satisfy them to accept a delay?
- How frequently does that committee require progress visibility on long-lead manufacturing milestones?
- Walk me through the internal approval path from FEED sign-off to award, including where procurement sits in the sequence.
- Who will be the named approver for installation readiness sign-off, and can they commit to hard acceptance dates?
- If the named approver cannot commit to the acceptance date, would you halt award until they can?
Technical limits that will make or break the design
- Name the seabed conditions or production chemistry that would make you reject a proposed tree or manifold design.
- Specify the number of comparable installations at similar depth and pressure you need to see as proof points before placing a long-lead order.
- List the vendor interfaces that worry you most and explain why.
- Identify any test or qualification result that would immediately stop the project.
- Do you require specific factory acceptance test witnesses or third-party verification, and if so which types?
Can manufacturing delivery meet your critical path?
- Assume a supplier guarantees a fixed 24-month manufacturing cycle, would you still insist on additional schedule cushions?
- Point to the long-lead components you consider highest risk for delay.
- Describe how you handle manufacturing changes driven by late reservoir updates and who approves cost and schedule impacts.
- List the inspection, FAT, and material traceability records you require before shipping.
- Would a single supplier manufacturing miss of critical components trigger a contract termination clause for you?
Which alternatives are truly on the table
- Provide the alternatives you are weighing, including internal build, the incumbent, and other vendor types, and say briefly why each is attractive.
- Explain the conditions under which you would retain the incumbent or pursue an internal build instead of changing vendors.
- Has anyone on your team proposed solving this with in-house manufacturing or a different procurement path?
- Would the ability of the incumbent or an internal build to meet your schedule and warranty needs end this search now?
- Select the primary reason you would switch from the incumbent or internal option.
Operational readiness and gating constraints
- Assume critical third-party interfaces or permits are not in place by the equipment delivery date, what must change in the plan?
- Identify the integration endpoints required and who owns each one, for example control system endpoints, host tie-ins, and SURF contractor interfaces.
- Do you have dedicated internal resources for installation engineering and logistics, or will you require the supplier to fill those roles?
- Rate the maturity of the datasets needed for installation engineering, from 1 immature to 5 field ready.
- Is any regulatory approval or permit currently at risk of not being granted within your required timeline?
- Select the infrastructure prerequisites already confirmed.
How you will judge whether this worked
- Define the operational reliability metric that would make you say the supplier met expectations after two years in service.
- Specify the availability, mean time between failures, or intervention-rate targets you are holding the project to.
- Name who approves additional budget if the spare strategy must be expanded beyond your baseline.
- Will you keep the project on track or pause for redesign if execution cannot deliver first oil within your target window even with vendor mitigations?
- Pick the acceptance criteria that are non-negotiable for you at go-live.
Deciding next steps and named owners
- Outline what would need to happen to accelerate a decision by one month.
- Provide the person who will sign the contract and indicate whether they can commit within that accelerated timeframe.
- When would you like a technical walkthrough of a proposed subsea architecture using your field context?
- Pick the deliverables you would require inside 30 days to move toward award.
- Are you prepared to start negotiating terms this month if we can deliver a schedule that protects your weather window and a warranty that aligns with a 25-year reliability target?
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Technical Solution Walkthrough
Walk through the proposed subsea architecture, manufacturing approach, installation methodology, and long-term reliability case using the buyer's field context.
Solution Experience
- Technical Solution Walkthrough
- Confirm the current state and its cost to your team
- You confirm the proposed subsea architecture fits your field constraints and interface boundaries.
- Deliver a time‑phased manufacturing and delivery milestone matrix aligned to the planned installation weather window.
- You confirm the manufacturing milestone plan aligns to the planned installation weather window and accepts the named milestones as decision gates.
- Walk through the subsea architecture in your field context
- Provide the list of outstanding field data, interface drawings, and acceptance criteria required to finalize the architecture and installation engineering.
- Confirm the decision criteria and named approvers for first‑oil readiness and FAT/IT acceptance.
- You confirm the presented reliability case reduces unplanned intervention risk to an acceptable level and identify remaining evidence required for approval.
- Prove the manufacturing approach and delivery milestones
- Demonstrate the installation methodology and vessel‑window integration
- You agree the outstanding technical questions and the evidence required to finalize commercial terms and FAT/IT scope.
- Schedule a follow‑up engineering alignment session to finalize FAT/IT scope and intervention contingency planning within two weeks.
- Present the long‑term reliability case and intervention plan
- Validate alignment with your stated needs
- Technical Solution Walkthrough
- Solution Experience Deck — Technical Solution Walkthrough
- Solution Brief — Technical Solution Walkthrough
- meeting
- slides
- document
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Engineering & Manufacturing Scope
Define equipment specifications, delivery milestones, factory acceptance tests, installation responsibilities, and interface boundaries.
Scope Configuration
- Manufacture Subsea Trees
- Fabricate Subsea Manifolds
- Manufacture Subsea Processing Modules
- Forge and Machine Pressure-Containment Components
- Manufacture Dynamic Umbilicals
- Fabricate Riser and Flowline Connection Hardware
- Integrate Subsea Control Systems
- System Integration and Factory Acceptance Testing
- Hydrostatic and High-Pressure Qualification Testing
- Pre-Deployment Assembly and Dry-Stack Testing
- Supply Project Spares and Maintenance Kits
- Provide Offshore Installation Engineering and Supervision
- Commissioning Support and System Handover
Scope Questions
Manufacture Subsea Trees
- Which nominal tree type and part number from your technical data package (TDP) is required (e.g., vertical or horizontal 3,000 m class)?
- Do the trees need to meet a specific pressure rating in your field (for example 10,000 psi or 15,000 psi)?
- Who will own the technical data package (TDP) approvals for tree materials, drawings, and heat-treatment records?
- When must first couple of production trees be delivered to align with the drilling and vessel window (enter target date for first delivery)?
- Provide the long-lead component list for trees from your procurement schedule (eg. chokes, control valves, high-pressure connectors).
- Specify any required end-to-end documentation for each tree shipment (for example traceability certificates, material test reports, and torque maps).
Fabricate Subsea Manifolds
- Describe the manifold architecture in the flow schematic you will supply (number of slots, pigging ports, spool configurations).
- Which corrosion allowance and material class must manifold pressure-retaining components follow from your design basis (eg. corrosion allowance mm, duplex or super-duplex)?
- Do you require integration of pigging and isolation hardware for your flow assurance strategy?
- List the delivery milestones you expect for manifold fabrication, weld qualification, and NDT completion.
- Indicate any manifold interface control document (ICD) items we must follow for flange faces, bolt patterns, and instrumentation tie points.
- Specify the onshore lifting and transport constraints we must design for (for example max lift weight, spreader bar footprint, and dry-dock load limits).
Manufacture Subsea Processing Modules
- Identify the subsea processing functions required in your module (for example multiphase boosting, separation, or gas compression).
- Specify the process feed conditions from your reservoir model that the module must handle (flowrate range, gas fraction, temperature, H2S/CO2 levels).
- Provide the module control and power requirements that must be integrated with your umbilical architecture (for example 4 kV electrical, fiber pair count).
- When do you require prototype or shop model reviews for manufacturing readiness reviews (MRR) in your project schedule?
- Describe any subsea chemical injection or flow assurance systems that must interface with the processing module and their connection standards.
- Indicate upper-bound acceptance temperatures and materials compatibility requirements from your process chemistry documentation.
Forge and Machine Pressure-Containment Components
- List the pressure-containment items in your scope that require forging (eg. valve bodies, housings) including required alloy grade from your materials list.
- Specify required traceability and mill test report (MTR) levels for forged components per your procurement spec.
- Who will approve non-destructive testing (NDT) procedures and weld maps for containment components?
- Provide lead time expectations for forged long-lead parts and whether you permit substitution from equivalent alloy suppliers.
- Identify any machining tolerance drivers from your assembly drawings (for example shaft runout, sealing face flatness in mm).
- Specify surface treatment and coating acceptance (for example internal corrosion-resistant lining, external paint system spec).
Manufacture Dynamic Umbilicals
- Which umbilical type and conductor count does your project require from the electrical and hydraulic ICD (for example 4 kV, 2 hydraulic lines, 12 fiber pairs)?
- Specify the umbilical maximum bend radius, dynamic fatigue life in cycles, and design depth from your installation study.
- Do you require mid-line or town-point splices and how many are anticipated per umbilical run?
- Provide the preferred armoring and tensile capacity thresholds from your mooring and riser load cases.
- Identify required factory tests for each umbilical reel (eg. partial discharge, continuity, hydraulic pressure test) and any test witness requirements.
- Indicate your packaging and shipping constraints for reels (for example max trailer width, port handling lift capacity).
Fabricate Riser and Flowline Connection Hardware
- Describe the connector types and size range from your interconnection list (eg. 7" connector, 4-bolt riser clamp) that must be delivered.
- Specify the make-up torque and flange face finish requirements called out in your connection drawing notes.
- Are there pre-qualified supplier lists or connection standards in your procurement spec we must follow (for example specific gasket class or bolt material)?
- List the environmental exposure constraints for connection hardware (eg. sour service H2S ppm, chlorine content, temperature range).
- Indicate whether you require connection dry-fit trials or fit-for-purpose mock-ups before shipping to the load-out port.
- Specify handling and protection requirements for machined surfaces during transport and offshore lifting.
Integrate Subsea Control Systems
- Identify the control architecture from your functional specification (for example electro-hydraulic tree control, fiber optic telemetry counts).
- Specify the number of interface points the control system must provide in the interface control document (ICD) to the production host (eg. DI/DO, analog channels, fiber pairs).
- Do you require hot-standby or redundant control channels for critical valves per your reliability target?
- Provide the telemetry and protocol requirements for the topside integration (for example Ethernet, MODBUS, or bespoke PRC protocol details).
- Describe witness and third-party inspection needs for control cabinet assembly and cable testing at factory acceptance test (FAT).
- Indicate the expected control-system software baseline release and whether configuration management records must be delivered.
System Integration and Factory Acceptance Testing
- List the system-level test scenarios from your commissioning plan that must be executed at FAT (for example full hydraulic actuation, leak checks, end-to-end telemetry).
- Who are the named approvers that must witness and sign the FAT protocol from your project (role and contact type, not person name)?
- When do you want FAT windows scheduled relative to the manufacturing completion milestone (enter preferred date range)?
- Describe any network or telemetry load tests that must be included in FAT using your field data profiles (for example sustained telemetry throughput in kb/s).
- What acceptance criteria will confirm successful system integration at FAT (for example end-to-end actuation within specified cycle time, zero critical leaks at X psi)?
- Indicate whether FAT witness attendance will be remote, on-site, or hybrid and any live-data export requirements during the test.
Hydrostatic and High-Pressure Qualification Testing
- Specify the hydrostatic test pressure levels and hold-times required by your qualification matrix for each component class.
- Are there fluid media restrictions for hydrotests in your location (for example freshwater, inhibited seawater, glycol blends)?
- Identify any witness or third-party certification bodies you mandate for pressure testing and certificates of conformance.
- Indicate the maximum allowable leakage thresholds per joint or assembly during pressure tests from your QA specification (for example ml/hr or bubble rate).
- What evidence will validate high-pressure qualification (for example stamped test certificates, filled witness logs, calibrated transducer traces)?
- Specify post-test NDT or metallurgical examinations you require following high-pressure cycles.
Pre-Deployment Assembly and Dry-Stack Testing
- List which assemblies will be dry-stacked at the yard and which will be delivered pre-assembled to the load-out port according to your lift plan.
- Provide the dry-stack test checklist items you require (for example mechanical fit, connector engagement, hydraulic leak test at X bar).
- Who will sign the dry-stack completion certificate on behalf of your project (role only)?
- How will you verify lifting and spreader-bar interfaces for assemblies against the vessel crane chart prior to load-out?
- What acceptance evidence will be required before we clear an assembly for shipment from the yard (for example completed dry-stack checklist, torque records, packing list)?
- Specify any corrosion protection or preservation steps you mandate between dry-stacking and offshore installation.
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Commercial & Contract Agreement
Finalize commercial terms, delivery schedule, acceptance criteria, penalties, and change-control governance to lock mutual obligations.
Agreement Modules
- Master Supply and Services Agreement (MSA)
- Statement of Work (SOW)
- Equipment Purchase Agreement
- Acceptance Test Protocol & Acceptance Certificate
- Change Order and Change-Control Governance
- Liquidated Damages & Penalty Schedule
- Payment Schedule, Security and Collateral
- Warranty, Performance Guarantees & Reliability Commitments
- Interface Management & Third-Party Integration Annex
- Shipping, Insurance and Risk Transfer Addendum
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Deployment
Lock readiness facts, execute installation, and validate acceptance before commissioning.
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Pre-Deployment Readiness
Capture concrete readiness facts — vessel windows, installation engineering packages, logistics dates, spare strategy, and named owners — required before execution.
Pre-Deployment Questions
Environment and site access
- List the installation site(s) and site IDs (one per line) — used to create per‑site mobilization plans.
- Is the nominated installation vessel(s) contracted and date‑confirmed? (so we can lock the installation window)
- Are port reception, marshaling area access, and on‑site lifting permits confirmed for the nominated ports? (so we can plan quay times and heavy‑lift operations)
Engineering and documentation
- Are installation engineering packages (installation FEED, lift plans, interface drawings, installation procedure) complete and released for procurement? (so we can freeze procedures used by vessel and lifting teams)
- What is the expected delivery date for the final installation engineering package per system? (enter date or 'TBD') — required to schedule engineering checks and pre‑lift approvals.
- Are interface responsibility matrices (seller ↔ SURF contractor ↔ buyer owner's engineer) finalized and signed? (so roles are clear during mobilization)
Logistics, transport, and spares
- Provide confirmed shipment readiness dates for long‑lead assemblies or critical spares (one line per item) — these dates drive shipping and customs booking.
- Do you have named owners for logistics, customs clearance, and port reception? (provide name and role per function) — we use these contacts for escalation and clearance.
- What is the primary spare strategy for critical failure modes? (select all that apply) — determines consignment, forward stocking, or on‑site requirements.
People, approvals, and constraints
- Who is the named owner for installation execution and final sign‑off (name, title, contact) — required for go/no‑go decisions offshore.
- Are regulatory and port permits required for mobilization available and cleared? (so we can confirm start of mobilization)
- List blackout weather windows, drilling/host facility constraints, or embargo periods that will prevent offshore installation (date ranges) — used to avoid forbidden mobilization dates.
- Confirm the go‑to‑install readiness gate: are vessel dates confirmed, installation packages released, named owners assigned, primary spares available, and permits cleared? (This single answer feeds the deployment go/no‑go.)
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Installation Execution
Coordinate manufacturing flows, FAT/IT, shipping, contractor interfaces, and the offshore installation Gantt with clear owners and escalation paths.
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Go‑Live Acceptance
Verify installation acceptance criteria, system integration tests, and commissioning sign-offs with named approvers before declaring first‑oil readiness.
Checklist items
- Receive signed Installation Acceptance Certificate
- Obtain System Integration Test (SIT) completion report with approvals
- Obtain Commissioning Completion Report with sign-offs
- Verify pressure and leak test certificates for installed equipment
- Confirm control system and SCADA end-to-end acceptance
- Receive Permit to Operate / regulatory HSE clearance
- Confirm lockout/tagout (LOTO) and isolation release documentation
- Handover as-built documentation and O&M manuals
- Confirm critical spares delivery or allocation and acceptance
- Close high-priority punchlist or record agreed remediation plan
- Obtain formal First‑Oil Readiness Declaration signed by approvers
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Operational Assurance & Support
Run recurring performance reviews, track issues and enhancements, and maintain a joint reliability and intervention-risk cadence for the life of the asset.
Success Reviews
- Go-Live Health Check
- First Operational Measurement
- Quarterly Operational Review
- Intervention Readiness and Escalation Drill
- Annual Reliability and Lifecycle Review
Issues & Enhancements
- Agree explicit mobilization triggers and notification timelines for on-call and procurement actions.
- Performance trends and KPI review
- Confirm the quarter-over-quarter direction for system availability percentage and unplanned intervention rate per year, and whether additional escalation is required.
- Prioritize the top three persistent issues for remediation within the next quarter and sequence required resources.
- Validate spare inventory and logistics readiness for the next scheduled intervention window.
- Publish the prioritized remediation backlog with expected delivery quarters for each item.
- Initiate purchase or allocation orders to bring spare inventory to agreed readiness levels.
- Update the risk register with new mitigations and owners for the top operational risks.
- Review intervention playbook and mobilization steps
- Demonstrate the intervention mobilization lead time and mean time to recovery can meet agreed operational targets.
- Identify and close critical gaps in logistics, spares placement, or escalation that would extend vessel-days required for recovery.
- Re-confirm acceptance artifacts and owners
- Publish the drill after-action report with timing metrics and recommended fixes.
- Update the intervention playbook to include agreed mobilization triggers and notification timelines.
- Pre-authorize procurement or logistics holds required to meet mobilization lead time targets.
- Year-to-date reliability performance
- Confirm whether cumulative unplanned intervention rate since go-live aligns with the projected lifecycle reliability targets recorded in Field Development Discovery and Engineering & Manufacturing Scope.
- Agree a prioritized multi-year mitigation or improvement plan where projected failure rates exceed targets.
- Document the interventions forecast and spare-procurement timeline for the coming year.
- Publish the annual reliability report with forecasted interventions and recommended mitigation projects.
- Create work packages for any agreed engineering updates or reliability-improvement projects with delivery milestones.
- Update the multi-year spare parts procurement plan to match the interventions forecast.
- Confirm commissioning sign-offs and handover documentation are recorded in Go-Live Acceptance.
- Record and assign remediation actions for all high-severity open issues with target dates.
- Verify incumbent decommissioning status is explicit and archived or retained-read-only as agreed.
- Publish a go-live health snapshot to the shared workspace documenting signoffs and outstanding issues.
- Log all high-severity open issues with target resolution dates and owners in the issue tracker.
- Confirm archival status or read-only retention of any incumbent system and publish the archival receipt.
- Present first-period performance data
- Determine whether the system availability percentage and unplanned intervention count are trending toward the targets recorded in Field Development Discovery and Go-Live Acceptance.
- Agree a time-bound remediation plan for each metric that is off-target, with clear completion dates.
- Confirm spare parts and vessel windows required to execute any agreed interventions.
- Publish the first-period performance dashboard with raw data sources and calculation methods.
- Create a remediation task list for off-target metrics with completion dates and success criteria.
- Reserve required spares and tentatively book an intervention vessel window if any remediation requires offshore work.
- Lifecycle forecast and intervention plan
- Drill execution and scenario walk-through
- Deployment and system validation
- Gap analysis and root-cause assessment
- Persistent issue and root-cause backlog
- Early operational signals and alarms
- Engineering feedback and design lessons
- Enhancements and change requests
- After-action review
- Agree immediate corrective actions
- Open issue log and immediate remediation actions
- Spare strategy and vessel alignment check
- Long-term risk and mitigation investment
- Update escalation and logistics agreements
- Spare parts and logistics posture
- Document outcomes and next review schedule
- Incumbent system wind-down status
- Risk register and mitigation actions
- Stabilization timeline and next measurement
- Confirm readiness-to-mobilize thresholds
- Action recap and next checkpoints