At Universal Subsea, our mission is to be a leading advocate in the offshore industry for safe and reliable subsea equipment design, manufacture, and operation.

The Problem

The deep ocean setting for subsea oil and gas wells is a hostile environment that can cause extensive damage to multi-million dollar subsea equipment due to corrosion, calcareous deposits, and marine growth.

erosion problem
  

The Solution

 

Defender Subsea Isolation Cap

cap solution   
Wellhead Defender Subsea Isolation Cap on H-4 Wellhead Test Fixture (multiple patents pending) ©2019 Universal Subsea, Inc. All Rights Reserved.
 
Universal Subsea’s advanced thermoplastic subsea isolation cap for subsea wellheads and subsea tree mandrels is the first protector cap to completely isolate the mandrel and internal bore from the subsea environment.  This unique protector cap utilizes thick wall plastic molding technology to provide space for oversized proprietary body seals which reliably seal very large gaps to the mandrel.  The special body seals effectively contain preservation fluids at low pressures while ensuring low installation forces for ROV deployment and retrieval.  The heavy duty ROV operated locking system ensures that the cap is positively locked to the mandrel while ensuring low risk of damage to the wellhead and the cap. 
 

 Defender Stasis LT Subsea Equipment Preservation Fluid 

  preservation fluid
Defender Stasis LT Subsea Equipment Preservation Fluid (patented product) ©2019 Universal Subsea, Inc. All Rights Reserved.
 
Universal Subsea’s nontoxic, biodegradable preservation fluid provides superior corrosion protection for subsea equipment in the marine environment.  The fluid is formulated as a Total Loss Lubricant so that it can be released directly to the environment for discharges subsea, offshore, in coastal waters, inland waters or on land.  Defender Stasis LT is also ideal for a wide range of other applications to protect subsea equipment and tools.  
 

ECONOMIC BENEFITS

USI’s subsea isolation cap and preservation fluid technologies provide substantial direct cost savings to offshore oil and gas companies:
  • Eliminate/reduce wellhead cleaning/remediation: $4,000 – $250,000 savings
  • Eliminate/reduce subsea tree cleaning/remediation (assumes 5 interventions): $40,000 – $1,200,000 savings
  • Reduced risk of leaking ring gasket: $80,000 – $500,000 savings
  • Eliminate risk of stuck protector cap: $14,000 – $3,000,000 savings
  • Horizontal tree workover using light intervention vessel instead of drilling rig: $1,000,000 – $10,000,000 savings per intervention
  • Eliminate hydrate problems with some common vertical trees: $150,000 – $500,000 savings per intervention
  • Extend useable life of subsea production tree by 2 to 5 years: $40,000,000 to $300,000,000 in additional revenue
subsea cap
Wellhead Defender
Subsea Isolation Cap
(multiple patents pending)
©2019 Universal Subsea, Inc.
All Rights Reserved.

Products and Services

Wellhead Defender Subsea Isolation Cap
USI’s deepwater thermoplastic subsea protector cap for new subsea wellhead installations and existing temporarily abandoned project wellheads.
  • Completely isolates the subsea wellhead bore, VX ring gasket profile, and H-4 profile from the marine environment, thereby halting all corrosion, mineral deposits, and marine growth.
  • Models: All subsea wellheads with 27” H-4 profile. Other sizes and models available upon special request.
  • Body: High performance marine grade thermoplastic
  • Installation: ROV, wireline or drillpipe
  • Depth rating: up to 11,000 ft. [3353 m]
  • Temperature rating: to 28°F [-2.2°C] minimum (colder Arctic ratings available upon request)
  • Testing: First low pressure subsea wellhead protector cap to pass API 6A/17D PR2 pressure test criteria

DEFENDER STASIS LT SUBSEA EQUIPMENT PRESERVATION FLUID
USI’s environmentally friendly subsea equipment preservation was developed primarily to provide protection for subsea wellheads and subsea tree mandrels in the deepwater marine environment.
  • Nontoxic, biodegradable base oils are combined with a highly effective biosynthetic corrosion inhibitor additive to provide exceptional corrosion protection for equipment installed subsea
  • The fluid is ideal for a wide range of equipment preservation applications to protect subsea equipment internals during shipping, storage and wet parking applications, in additional to running tools and other uses topsides on the rig or installation vessel.
  • Defender Stasis LT provides a long shelf life and operating life (over 3 years) but biodegrades rapidly if released to the environment (over 60% in 28 days). The fluid provides the lowest possible environmental impact in the event of planned, unplanned, or incidental discharges.
TREE DEFENDER SUBSEA ISOLATION CAP
USI’s deepwater thermoplastic subsea protector cap for new subsea tree installations and existing subsea trees.
  • Completely isolates the subsea tree mandrel upper bore, VX ring gasket profile and H-4 profile from the marine environment, thereby halting all corrosion, mineral deposits, and marine growth.
  • Models: Most subsea trees with 27” H-4 profile (GE Vetco Gray, Aker, etc.) ). Isolation cap for EVDT Vertical Subsea Trees under development. Consult USI to review your specific subsea tree application. Other isolation cap models available upon special request.
  • Body: High performance marine grade thermoplastic
  • Installation: ROV, wireline or drillpipe
  • Depth rating: up to 11,000 ft. [3353 m]
  • Temperature rating: to 28°F [-2.2°C] minimum (colder Arctic ratings available upon request)
  • Testing: First low pressure subsea tree protector cap to pass API 6A/17D PR2 pressure test criteria

ENGINEERING CONSULTING SERVICES
Subject Matter Experts with expertise in subsea equipment specification, selection, design, engineering, manufacture, operation, and reliability. Please contact us at Universal Subsea, Inc. for additional information.

Contact Info

SEAN THOMAS, P.E.
President & General Manager
Email: sthomas@universalsubsea.com
Phone: 713-542-1262
JOHN FITZGERALD
Director of Sales & Marketing
Email: jfitzgerald@universalsubsea.com
Phone: 713-213-5835
SEAN J. SHAUB
Interim CFO
Email: sshaub@universalsubsea.com
error: Content is protected !!