What DSI does

DSI FZE (operating as DSI) is a Dubai-headquartered, privately-held specialist in downhole circulation technology, founded in 1994 and operating as a wholly-owned subsidiary of Austria's SBO Group (Schoeller-Bleckmann Oilfield Equipment AG). The company's flagship offering is the patented PBL® Multiple Activation Bypass System, a circulating sub that directs 100% of flow through side ports via ball or dart activation, enabling operators to pump lost circulation material (LCM), cement, or perform hole cleaning without tripping out of the hole. The product portfolio extends across Split Flow PBL® variants (for simultaneous BHA and annular flow), the Booster Tool, Slimhole PBL® for coiled tubing, the HydraFlow® hydraulically activated system, the HPHT Burst Disc, a Jetting Tool, the Sliding Sleeve Big Bore System, and a Geothermal PBL® line rated up to 500°F+ for high-temperature wells.

The company serves enterprise oil and gas drilling operators (IOCs and NOCs) and geothermal energy operators, addressing challenges in deepwater, extended-reach drilling (ERD), HPHT, high-deviation wells, and well intervention/completion. Performance metrics cited include a >99.5% tool performance rate, zero safety incidents globally, and documented world-record deployments including a 7,964m MD activation/deactivation with Aker BP in the Norwegian North Sea.

DSI operates through direct enterprise field sales supported by six regional offices (UAE headquarters, Brazil, Mexico, Saudi Arabia, India, UK/Scotland), regional channel partners, and the global infrastructure of the SBO Group (~1,600 employees, 20+ locations). Revenue is generated through hardware sales/rentals of the PBL® tool family and accompanying professional services including pre-job hydraulic modelling, customized BHA configuration, and 24/7 technical support. The company is certified to ISO 9001, 14001, 45001, and 22301 standards and operates across 65+ countries with personnel from 22 nationalities. Pricing is quote-based and project-specific; no public revenue is disclosed given its subsidiary status under SBO Group.

Name

DSI

Legal name

DSI FZE

Website

https://dsi-pbl.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

51–100 employees

Short description

DSI FZE is a Dubai-based specialist in patented downhole circulation technology (the PBL® Multiple Activation Bypass System), serving enterprise oil and gas and geothermal drilling operators across 65+ countries as a wholly-owned subsidiary of Austria's SBO Group.

Ownership category

akta.pro rank

Product category

Oilfield Downhole Circulation Equipment

NAICS

Oil and Gas Field Machinery and Equipment Manufacturing (333132), Fluid Power Valve and Hose Fitting Manufacturing (332912)

SIC

Oil & Gas Field Machinery & Equipment (3533), Oil & Gas Field Services, Nec (1389)

akta.pro primary industry

Pneumatic Components (FRLs, Cylinders, Valves) (IMAHAGAC)

akta.pro secondary industry

Hydraulic, Pneumatic & Fluid Power Systems MRO (Cylinders, Pumps, Valves, Hoses) (TLAKAHAI)

Keywords

• Downhole circulation tools
• Bypass system technology
• Drilling optimization equipment
• Geothermal drilling tools
• Oilfield completion services

Headquarters

HQ city

Dubai

HQ country

United Arab Emirates

HQ region

Middle East

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. PBL® Equipment and Tool Rental/Sales: DSI provides its PBL® Multiple Activation Bypass System and related downhole circulation tools to oil & gas and geothermal drilling operators. Revenue is generated through tool sales, rental, and service contracts. The company offers 24/7 technical and operational support globally.
2. Technical Services and Support: DSI provides engineering support including pre-job hydraulic modelling, customized solutions, and operational deployment support. Services include planning, troubleshooting, and on-site technical assistance throughout drilling operations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels9 records

Core offering

DSI manufactures and supplies the patented PBL® Multiple Activation Bypass System, a circulating sub that directs 100% of flow through side ports into the annulus for drilling, completion, workover, through-tubing, and decommissioning operations. The company also offers complementary tools (Split Flow Dart System, Booster Tool, HydraFlow®, Geothermal PBL®, Jetting Tool, SSBB, HPHT Burst Disc) and provides engineering services including pre-job hydraulic modelling and 24/7 operational support to oil & gas and geothermal operators worldwide.

Product overview

DSI is a specialized downhole circulation technology provider offering a portfolio of PBL (Multiple Activation Bypass System) products designed for drilling, completion, workover, through-tubing, and decommissioning operations. The core PBL® Multiple Activation Bypass System is the flagship patented technology, supplemented by Split Flow variants, the Booster Tool for split-flow drilling, Slimhole PBL® for coiled tubing applications, the HydraFlow® hydraulically-activated system, Jetting Tool for cleanout operations, Sliding Sleeve Big Bore System for specialized retrievals, and the HPHT Burst Disc for well control. The company also offers geothermal-specific high-temperature variants rated up to 500°F+. All products integrate with standard BHA configurations including MWD/LWD tools, rotary steerable systems, and drilling motors. DSI operates as part of the SBO Group with 30+ years of industry expertise.

Differentiator

Problem solved

Functional benefit

Brands

• PBL (Patented Bypass Technology): PBL Multiple Activation Bypass System - the company's flagship patented technology for downhole circulation in drilling operations
• Split Flow PBL
• Geothermal PBL
• Booster Tool
• HydraFlow
• DSI HydraFlow System

Products and services

• PBL® Multiple Activation Bypass System Flagship patented circulating sub technology that directs 100% of flow through side ports into the annulus via ball or dart activation. Enables LCM displacement, cement operations, and hole cleaning without tripping out of the hole. Available in sizes from 4¾ to 9½ inches with HPHT seals rated up to 392°F (200°C), with options up to 500°F (260°C). For oil & gas drilling, completion, workover, and geothermal operators.
• PBL® Split Flow Dart System Split-flow system enabling pre-calculated flow split between BHA and annulus through the tool's side ports. Automatically closes side ports when pumps are turned off, eliminating U-tubing and ensuring well integrity. Enables optimal flow rates through sensitive MWD/LWD/RSS components while boosting annular velocity for hole cleaning. For drilling operators requiring optimized hydraulics.

Quantifiable outcome

• Hole-cleaning time reduced by 50%, eliminating unnecessary sweeps and Hi-vis pills, saving ~2 hours of rig time
• +6 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Neo OiltoolscoreStrategic or Co-development Partner · 8 December 2025Neo Oiltools used DSI technology to achieve a new 3,160m uninterrupted run milestone in Mexico's Ixachi Field. DSI is proud to contribute to results that demonstrate operational stability, efficiency, and the impact of strong partnerships in complex drilling environments.
• Saudi Aramco (Drilling Technical Department)coreGTM or Marketing Partner · 28 October 2025SBO held its Technology Day on 28 October 2025 at the Sofitel Al Khobar, in collaboration with Saudi Aramco's Drilling Technical Department. The event showcased DSI's PBL circulation sub, Split Flow technology, BICO Drilling Tools, D-Tech Rotary Steerable, and The WellBoss Company. Strong participation from Aramco Engineering, Operations, and EXPEC ARC teams.
• SBO Group (Schoeller-Bleckmann Oilfield Equipment AG)coreStrategic or Co-development PartnerDSI is a proud member of the SBO Group — a global network of technology-driven companies serving the upstream energy sector. SBO is headquartered in Ternitz, Austria, with ~1,600 employees and operations in 20+ locations worldwide. SBO provides DSI with metallurgical expertise in high-precision non-magnetic steel components, global manufacturing scale, and infrastructure, enabling DSI to combine local service with global innovation capability. SBO is the global leader in manufacturing high-alloy, non-magnetic steel and high-precision components for the energy sector.
• EnedrillcoreStrategic or Co-development PartnerEnedrill partnered with DSI for a series of geothermal doublet wells in the Paris Basin, France, targeting the Dogger formation. The collaboration enabled multi-lateral acid stimulation using DSI's 6¾-in. PBL® system, with Enedrill providing the drillstring, MWD, and operational execution. Successful stimulation of three lateral sections was achieved with zero operational downtime.
• TFS (Norway)coreChannel Partner/ Reseller/ DistributorTFS (Through-Bore Flow Systems or equivalent) in Norway serves as DSI's regional agent and partner, collaborating on challenging ERD well applications. TFS supported the world-record PBL® activation/deactivation at 7,964m MD in the Norwegian North Sea with Aker BP, providing on-site operational collaboration.
• Tasman (New Zealand)minorChannel Partner/ Reseller/ DistributorTasman Oil Tools is DSI's local partner in New Zealand. DSI's VP Business Development-Eastern Hemisphere attended the 47th NZ Geothermal Workshop in Rotorua alongside Tasman, exploring innovative geothermal technologies and sharing insights on DSI's PBL Split Flow solutions.
• Brandes (The Netherlands)minorChannel Partner/ Reseller/ DistributorBrandes, based in The Netherlands, is DSI's ECI (East Coast India / Europe/CSI) region agent. Technicians Anne-Marie and Herman Boer attended DSI Dubai's intensive in-house training program focused on PBL Bypass Systems service and operations.
• SBD (UK)minorChannel Partner/ Reseller/ DistributorSBD (Schoeller-Bleckmann Drilling or equivalent) in the UK serves as DSI's regional agent for the ECI region. Technician Graeme Will attended DSI Dubai's intensive in-house training program on PBL Bypass Systems.

Scale indicators12 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Weatherford International: Independent oilfield services company offering drilling, evaluation, and intervention tools, including circulating subs and downhole drilling tools. Competes in the same downhole circulation and BHA solutions space as DSI.
• Halliburton: Major oilfield services provider with Sperry Drilling and Baroid divisions covering MWD/LWD, drilling fluids, and downhole tools. Overlaps with DSI in drilling circulation and bypass applications through its integrated drilling services portfolio.
• SLB (Schlumberger): The world's largest oilfield services company with broad drilling, completions, and production portfolios. Competes in downhole circulation tools and bypass technologies as part of its integrated well construction offering, serving the same major IOCs and NOCs that DSI serves.
• Baker Hughes: Integrated oilfield services provider with drilling, completions, and evaluation technologies. Competes in downhole drilling tools and circulation applications through its drilling services segment serving similar enterprise operators globally.
• Schoeller-Bleckmann Oilfield Equipment AG (SBO): Parent company of DSI and global leader in manufacturing high-alloy non-magnetic steel and high-precision downhole components. Provides metallurgical expertise and manufacturing scale to DSI while also producing its own non-magnetic drill string components to drilling operators.

Direct peers

• Forum Energy Technologies: Specialty manufacturer of drilling and subsea products including downhole tools, drilling jars, and intervention equipment. Competes in the downhole specialty tool niche with similar engineering-focused product portfolios serving drilling operators.
• Coretrax: Specialist downhole wellbore clean-up, zonal isolation, and tool rental provider based in the UK. Directly competes with DSI in wellbore clean-out services, circulation tools, and downhole intervention equipment across North Sea and global markets.
• NOV (National Oilwell Varco): Manufactures drilling rig equipment and downhole tools including the IntelliServ wired drillpipe network (which DSI's Wired PBL integrates with). Overlaps with DSI in drilling tools, MWD/LWD components, and downhole drilling architecture for major operators.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/dsi-fze-bypass-systems

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries5 records

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 DSI