Ter Bron operator at the remote controls inside the cabin, looking towards the wellsite

Small footprint. Serious pulling power.

MANTISUltra-light, remote-controlled HWU.

WELL SCREENING

Where MANTIS fits.
And where it doesn’t.

We screen every well before we quote it, and we turn some down.

MANTIS fits

  • Jointed-pipe scopes within 75 t pull and 2⅜–7⅝″ tubulars
  • Sites where space, crane capacity or POB make a rig costly or impractical
  • P&A, cementing, workovers, fishing and wireline support

Fits under conditions

  • Loads close to 75 t: confirmed by engineering check
  • Offshore decks: lifting, load path and layout per project
  • Scopes that need specialist tooling or local partners

Use a rig

  • Pulls or tubulars beyond the current unit’s range
  • Scopes that need full drilling-rig capability
  • Wells where the screening shows a rig is the better option
Send us your well

MANTIS / CURRENT UNIT

One unit.
Onshore and offshore.

A remotely controlled hydraulic workover unit for well intervention and P&A, designed for sites where space, lifting capacity and personnel are constrained.

Pulling capacity
75 t
At 310 bar hydraulic system pressure
Tubulars
2⅜–7⅝″
Selected slips, connections and tooling
Unit weight
7 t
MANTIS unit · Ø 2.5 m
MANTIS crew
2–3
Per active shift · supporting services additional
  • Standard well control. MANTIS works above conventional well-control equipment selected for the well programme. Crews are IWCF well-control trained.
  • Rig-up in 3–12 hours, depending on the site. Self-supported wireline rig-ups.

Figures describe the MANTIS unit. The supporting spread, well-control stack and services are defined per well programme.

Norwegian flagTechnical overview, NORSOK D-002 basis & documentation

Operating requirements.

Slip gripping range
2⅜″–7⅝″Selected slips, connections and tooling
How the deployment fits together
Indicative interface map: a separate control cabin and hydraulic power supply connect to MANTIS above the well-control equipment. Supporting services and site interfaces are defined per project.

Indicative interface map. The well-control arrangement, load path, module weights, installed height, full-spread footprint and supporting services are established during project engineering.

Request module weights and lifting information for your scope

ENGINEERING BASIS

NORSOK D-002 · Well intervention equipment

Status: design reference for MANTIS development. Applicable requirements and supporting equipment records must be reviewed for the proposed deployment. This reference does not establish full compliance or third-party certification.

Discuss the design basis
Regulatory references & documentation

LBEG approval 320 relates to the documented 75 t unit. SodM reviewed the HSE case and issued a no-further-questions letter; this is not product or rig approval.

Request the applicable equipment records, management-system certificates and project verification documents for your scope.

Request documentation

THE COMPLETE SPREAD

MANTIS in the field.

Two views of MANTIS and its supporting equipment on site.

WELL-ANCHORED DEPLOYMENT
SELF-SUPPORTING DEPLOYMENT

EXPERIENCE

Engineering meets the field.

20well operations &
test deployments

Across continental Europe and the UK.

Multi-well cementing. Abandonments.
Workovers. Fishing. Testing.

Norway · United Kingdom · Switzerland · Germany · Netherlands

Offshore engineering studies

For offshore operators in Denmark, Norway and the United Kingdom.

Send us your well

RED ZONE MANAGEMENT

Control from a distance.

Control hydraulic jacking, power tongs and pipe handling from the cabin, reducing personnel exposure beside the unit during powered movements.

Red zone boundaries and access for hands-on tasks are defined in the operating plan.

TER BRON / CONTROL CABIN · TEST SETTING · 00:06

NEXT MANTIS / UNDER DEVELOPMENT

The next chapter.
More pulling power.

200 t

TARGET PULLING CAPACITY

75 t in operation.
200 t in development.

The next MANTIS extends the planned tubular range up to 9⅝″ for heavier intervention scopes.

The production model targets compliance with applicable NORSOK D-002 requirements. Compliance verification, final specifications and availability are to be confirmed.

Discuss a future requirement
Further development

ESP cable handling, premium-thread handling and milling are also under development.

Sunil wearing a hard hat with a mounted camera, safety glasses and hearing protection beside well-service equipment
TER BRON / FIELD ENGINEERING

DELIVERY

Fit-for-purpose delivery.
Local partners.

Ter Bron supplies MANTIS and the operating expertise. Local partners provide the complementary services your programme needs: cementing, fluids, wireline, lifting and site support.

Total personnel on board (POB), supporting services and responsibilities are agreed around the well programme before mobilisation.

SYSTEM INTEGRATION TEST · ABERDEEN, UK
Ter Bron transport truck with a mounted crane

MOBILISATION

One truck.
No separate mobile crane.

The truck-mounted crane unloads and positions MANTIS for suitable onshore setups, combining transport and unit placement in one vehicle.

Fewer separate crane lifts can reduce exposure to weather-dependent lifting windows. Ground conditions, reach and access determine the onshore setup; offshore weather limits, lifting and deck arrangements remain project-specific.

TECHNICAL ENQUIRIES

Send us your well.

Send our technical team a short outline of the work you need to perform. We’ll review the potential fit, identify the key technical questions and agree the next step.

Ter Bron technical team
Well screening · Technical enquiries

info@terbron.nl +31 (0)591 245 090

Useful starting information

  • Country and onshore/offshore setting
  • Work required
  • Tubular sizes and expected pulling loads, if known
  • Indicative timing

Share non-confidential information first. Detailed well records can follow through an agreed channel.

Send us your well

Discussing well-intervention equipment at an industry event
TER BRON / TECHNICAL EXCHANGE

CAREERS

Work with MANTIS.

Bring practical technical skills and a willingness to travel. Explore operator roles and training with Ter Bron.

SITE INFORMATION

A straightforward introduction.

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The 75 t unit is the current operational unit. The next 200 t unit is under development; final specifications and availability are to be confirmed. Suitability remains subject to project engineering. Photographs supplied by Ter Bron show its people and equipment; they do not establish suitability for another location.