Onsite Treatment Services

What Onsite Treatment Services does

Onsite Treatment Services AS (OTS) is a privately held Norwegian industrial equipment company founded in 2001 in Stavanger and headquartered in Tananger, formed through the January 2020 merger of OTT AS and OTS AS. The company designs, manufactures, rents, and operates specialized equipment for drilling waste management and well intervention in the offshore oil and gas industry. OTS serves a customer base of international operators (Equinor, BP, Shell, Neptune Energy, TotalEnergies, Vår Energi, Woodside) and oilfield service companies (Halliburton, SLB, Baker Hughes, TWMA, Expro) across the North Sea, Asia-Pacific, West Africa, Gulf of Mexico, and Eastern Europe.

The core product portfolio centers on the proprietary 4th Generation Waste Water Treatment Unit (WWTU), which uses mechanical separation (decanter, guard filter, disc stack) to process oil-contaminated brines and slop water at 20m3/hr with sub-5 ppm oil-in-water discharge and no chemical additives. Complementary products include the registered CDP cuttings discharge pump (PLC-controlled, remote-operated), V75 blower-type and twin liquid ring vacuum units, the patented OFM-I offshore mud cooler, SRS swarf removal systems, CRI cuttings re-injection packages, filtration skids and consumables (OilBlock absorption cartridges, Dutch Filtration cartridges), and a fleet of well service pumps (450-1450hp) and mud coolers. All equipment is certified to DNV 2.7-1, ATEX Zone 1/2, and NORSOK Z-015 standards and manufactured at the Tananger workshop.

OTS generates revenue through a mix of equipment rental (long-term contracts with mobilization/demobilization), direct equipment sales, personnel services for rig-based equipment operation, custom engineering and fabrication, and filtration consumables. Pricing is quote-based under multi-year contracts, with no public pricing disclosed. The company operates through three regional offices (Norway HQ, Aberdeen UK, Perth Australia via subsidiary Scottech) and pursues new geographies including CCS applications (Project Greensand) and additional product lines via partnerships (Solidsvac, Pieralisi, Dutch Filtration, Nederman). The company is privately held with no institutional investors, venture capital, or public shareholders disclosed.

Name

Onsite Treatment Services

Legal name

Onsite Treatment Services AS

Website

https://ots.as

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

11–50 employees

Short description

Onsite Treatment Services AS is a Norwegian privately held equipment provider founded in 2001 that designs, manufactures, rents, and operates proprietary drilling waste management and well intervention equipment for offshore oil and gas operators and oilfield service companies globally, with offices in Norway, the UK, and Australia.

Ownership category

akta.pro rank

Product category

Oil and Gas Drilling Waste Management Equipment

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132), Construction, Transportation, Mining, and Forestry Machinery and Equipment Rental and Leasing (53241)

SIC

Oil & Gas Field Machinery & Equipment (3533), Services-Miscellaneous Equipment Rental & Leasing (7350)

akta.pro primary industry

Oilfield Equipment Manufacturing & Supply (Wellheads, BOPs, Surface Equipment) (EUALABAL)

akta.pro secondary industry

OFS Engineering, Construction & O&M (Field Development, Brownfield, Maintenance) (EUALABAM)

Keywords

• Drilling waste treatment
• Offshore equipment rental
• Cuttings handling systems
• Vacuum transfer equipment
• Well service pumps

Headquarters

HQ city

Tananger

HQ country

Norway

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D

Revenue model

1. Equipment Rental: OTS rents a comprehensive fleet of drilling waste treatment equipment including WWTU, vacuum units, CDP systems, centrifuges, separators, mud coolers, pumps, filters, and associated equipment. Equipment is positioned at bases globally. Rental includes technical service and 24/7 support.
2. Equipment Sales: Sale of designed and manufactured equipment including WWTU, cuttings handling systems, vacuum units, tanks, mud skips, and custom-built packages. Equipment manufactured in Tananger workshop.
3. Operations and Personnel Services: OTS provides experienced personnel for safe operation of equipment on offshore rigs. Includes field technicians, operators, and engineering support. Service personnel are handpicked for each position.
4. Engineering and Fabrication: Custom engineering, fabrication, installation services for drilling waste processing systems. Equipment certified to DNV 2.7-1, NORSOK, ATEX standards.
5. Filtration Consumables: Sale of filter cartridges, filter bags, and oil absorption cartridges through Dutch Filtration partnership. Stock maintained in Tananger with worldwide availability.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

OTS designs, manufactures, rents, and services specialized mechanical equipment for handling, processing, and treating drilling waste offshore — including waste water treatment units (WWTU), vacuum units, cuttings discharge pumps, cuttings re-injection systems, swarf removal systems, mud coolers, filtration skids, and high-pressure well service pumps. Equipment is sold and rented to oil and gas operators (Equinor, BP, Shell, TotalEnergies, Woodside) and oilfield service companies (Halliburton, SLB, Baker Hughes, TWMA), supported by trained field personnel.

Product overview

Onsite Treatment Services (OTS) is an industrial equipment provider offering a comprehensive portfolio of specialized products for the oil and gas industry, centered around drilling waste management and well intervention solutions. The core product lines include: (1) Waste Water Treatment Units (WWTU) - mechanical separation systems for processing contaminated water with no chemicals, producing dried solids, oil, and water streams; (2) Vacuum Systems - including small, standard, and twin liquid ring vacuum units plus blower-type units for fluid transfer and pit tank cleaning; (3) Drill Cuttings Handling - encompassing the CDP Cuttings Discharge Pump, Cuttings Blower Unit, CRI Cuttings Re-Injection, Closed Mud Skips, and Skip Filling Station; (4) Filtration Equipment - including filter units, bag and cartridge systems, OilBlock absorption cartridges, mudstrainers, and centrifugal separators; (5) Swarf Removal - the SRS system for metal swarf and debris removal during casing milling; (6) Well Service Equipment - high-pressure pumping units from 450-1450hp, mud coolers, and various pump skids; (7) Storage and Handling - storage tanks, mixing units, and circulation equipment. Products are designed for offshore and onshore applications, certified to standards including DNV 2.7-1, ATEX, NORSOK, and ISO 9001/14001, and offered through rental and sales channels.

Differentiator

Problem solved

Functional benefit

Brands

• Scottech: An OTS company based in Perth, Australia, providing oil and gas equipment and services.

Products and services

• Waste Water Treatment Unit (WWTU) Mechanical separation system that processes oil-contaminated brines, seawater, surfactants, freshwater, and surface-generated water into three distinct waste streams: dried solids, oil, and water. The 4th generation unit has capacity up to 20 m3/hour with oil in discharge water below 5 ppm and requires no chemical additives. Designed for offshore drilling operations and oilfield service companies.
• V75 Blower Type Vacuum Unit Containerized skid designed for high-risk locations including Potentially Explosive Atmospheres Category 2G with ATEX Mark. Features 75 kW electrical motor and Dresser Roots blower. Operates at -20C to 30C ambient temperatures, DNV 2.7-1 and NORSOK Z-015 approved, CE marked. For offshore cleaning and fluid transfer operations.
• Vacuum Units (Liquid Ring Type) Containerized liquid ring vacuum units for all types of cleaning and fluid transfer purposes. Built to customer specifications with Ex zone certification including ATEX, multivoltage operation (400-690 Vac / 50-60 Hz), DNV 2.7-1 approved container with lifting equipment. For offshore cleaning operations and oilfield service companies.
• Twin Vacuum Unit High-capacity vacuum unit with more than four times the volume of suction per pump compared to standard units, enabling transport of heavy waste over long distances. Features 2x Samson KM2700 pumps with 2x 75 kW motors and 2x 3000 m3/h suction capacity. Lloyd's Register, ATEX, Z-015, EN 12079-1 / DNV 2.7-1 certified.
• Vacuum Unit, Small Liquid Ring Type Compact liquid ring vacuum unit designed for low energy usage and effective operation. Max volume 150 mbar abs, max pressure 10.0 bar(G), max capacity 1600 m3/hour. ATEX Zone 1 and DNV certified. Weight 2400 kg with small footprint for ease of placement; for cleaning operations including waste water, oily sludges, slop water, mud types, and drain cleaning.
• CDP© – Cuttings Discharge Pump Automated drill cuttings transfer system that transfers cuttings from shakers to cuttings bins or slurry units in a closed loop. PLC-controlled via sensors and radars with weighing cells and level sensors for volume/weight logging. Remote operation reduces HSE risk. 270° operational radius, reaching 2.0-6.0 m distance and 0-4.0 m height. Handles ROP peaks of 120 m/hr in 12¼" section. Dimensions: 5800 mm length, 3250 kg weight. For offshore drilling operators and oilfield service companies.
• CRI – Cuttings Re-Injection Cuttings Re-Injection system that results in zero discharge to the environment. Slurrification system designed to receive drill cuttings from rig's solids control equipment and process slop water from mud pits, cementing room, and wellhead. For offshore operators requiring zero-discharge compliance.
• Cuttings Blower Unit Pneumatic cuttings transport system for transporting drilled cuttings from shaker trough to skip loading station directly into closed mud skips. DNV 2.7-1 certified, Zone 1 rated with automatic or manual operation. Pairs with Pneumatic Transfer System (PTS) for safe cuttings handling over minimum deck space with double fail-safe redundancy. For offshore drilling operators and oilfield service companies.
• SRS – Swarf Removal System

Quantifiable outcome

• Average saving of 2 million NOK per well compared to previous technology (Statoil evaluation, 8-well comparison)
• +5 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Three partnerships are on record, tiered core.

• SolidsvaccoreTechnology or Integration · 7 November 2022OTS and Solidsvac signed an agreement in November 2022 for OTS to provide Solidsvac's full range of equipment to the Norwegian domestic and Scandinavian market along with their global clientele. This includes the SV150 and SV440-CVCD, described as the world's ONLY Continuous Vacuum Loading Solids Pumps moving large volumes using less air.
• PieralisicoreTechnology or IntegrationOTS worked with Pieralisi engineering department to develop waste water treatment systems. Experience from washing bay testing was transferred to Pieralisi for new offshore units. Pieralisi contributed to mechanical separation technology development.
• Dutch FiltrationcoreTechnology or IntegrationOTS represents Dutch Filtration offering a wide range of filters and systems for filtration of various fluids. OTS maintains stock of Dutch Filtration cartridges in Tananger including 52 pleats 40" cartridges of 2, 10, and 25 micron. Oil absorbing cartridges also available through this partnership.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• SLB (Schlumberger): Largest oilfield services company globally; rents OTS WWTU slop units, uses OTS equipment on Fenja/Brage/Nordkapp projects, and offers overlapping MPD, CRI, and production services to the same offshore operators.
• Aker Solutions: Norwegian-based oilfield engineering, services, and equipment provider active in subsea, field development, and offshore maintenance—shares OTS's Norwegian customer base and adjacent capabilities in offshore oil and gas.
• Weatherford International: Oilfield services and equipment provider with overlapping well intervention, drilling, and pressure pumping offerings that compete with OTS's high-pressure pump rental and well-service equipment.
• Baker Hughes: Oilfield services incumbent with historical OTS partnership dating to the first North Sea WWTU installation in 2001; competes in well services and pressure pumping while also being a customer on certain projects.
• Halliburton: Global oilfield services major that both rents OTS equipment and offers competing well services, MPD, stimulation, and waste-handling solutions across the same offshore customer base.
• Nabors Industries: Global drilling contractor and oilfield services provider that, like OTS, supports offshore rig operations with waste management, fluids handling, and drilling-related services across the same end-customer base.

Direct peers

• Solidsvac: Manufacturer of continuous vacuum loading solids pumps (SV150, SV440-CVCD) for drilling and industrial applications. Has a distribution partnership with OTS for the Norwegian/Scandinavian market and competes in overlapping vacuum/solids-handling product categories.
• TWMA: Aberdeen-based specialist in drill cuttings processing and waste handling for offshore operators. OTS is an equipment supplier to TWMA on multiple North Sea projects (Valaris, COSL Innovator), making TWMA the closest comparable pure-play in drilling waste management.

Others

• Dutch Filtration: Filtration product supplier with a representation/distribution partnership with OTS; complementary rather than competitive, supplying cartridges and consumables that OTS bundles with its WWTU and filtration skids.

Emerging players

• Derrick Equipment Corporation: Manufacturer of solids control and screening equipment for drilling fluids—adjacent product overlap with OTS's cuttings handling and filtration portfolio, though Derrick focuses more on shale and shaker equipment than offshore WWTU.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@OnsiteTreatmentservices
• LinkedInlinkedin.com/company/onsite-treatment-services

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Onsite Treatment Services