The offshore drilling industry in Connecticut comprises of companies specializing in the exploration and production of petroleum, serving a global market. These companies are known for their advanced drilling technologies, engineered for extreme environmental conditions. Some focus on delivering real-time industry news, while others excel in providing top-tier drilling gear including MWD, LWD, and RSS. As the need for fossil fuels continues on a downward trend, these companies constantly innovate and adapt to remain viable, often branching out into different subsets of the energy sector.


Top 22 offshore drilling companies in Connecticut

1. International Oil Co

It provides industry news updates several times a day and incisive feature articles written by seasoned petroleum journalists around the world and a team of experts across the globe whose insight and technical expertise are exclusive to OGI. OGI doesn't just reproduce press releases and call it news, it delivers the news you can use sometimes minutes after it happens so you stay ahead of the game and can make the kind of informed decisions that matter in today's dynamic petroleum industry. Not only is OGI a source for timely industry news, but it is the number one website in the world for in-depth analysis of both leading edge technology and world petroleum plays. Only OGI gives you genuinely useful editorial coverage of the world of petroleum exploration and production. Contact Information:


2. APS Technology Inc.

  • Website: aps-tech.com
  • Headquarters: Wallingford, Connecticut, United States
  • Founded: 1993
  • Headcount: 51-200
  • Latest funding type: Debt Financing
  • LinkedIn

APS Technology is a company that develops and manufactures advanced drilling technologies for harsh environments and extreme conditions. They offer a range of products including MWD, LWD, RSS, and other technological innovations. Their rugged and reliable drilling technologies are designed to perform in temperature and pressure extremes, providing troubleshooting, product support, and field problem resolution. By choosing APS, customers can expect the best-in-class technology both today and in the future.


3. JMW Consultants

  • Website: jmw.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 1982
  • Headcount: 11-50
  • LinkedIn

JMW excels at working with companies to change their Business Performance Mindset. We know how to change and align the mindset at the individual, team, and organisational level, leading to breakthrough increases in business performance. We offer a customised, collaborative approach to strategy and project consulting, in which we are better equipped than other consulting firms to address the human element. In our approach, we start with the premise that elevating both individual and leadership capability is the strongest lever for elevating enterprise performance. We use our experience and tools to deliver personalised programmes for you and your senior team members, that changes what you believe can be achieved, individually and collectively. We help your teams collaborate and communicate more effectively, and to have greater clarity and alignment on company commitments. We add the power of true engagement to the specialised technical knowledge and processes that make up your business. Energised by this new level of belief and collaboration, we have seen teams go on to create and implement new strategic initiatives, and to operate at a whole different level, resulting in some cases in hundreds of million dollars in additional value per year. For these companies, these were marked sustainable improvements in their organisational capabilities and to their bottom line. Hear more about the clients we’ve helped and read more about our success stories at jmw.com. Or, better still, contact us directly to learn more about how our approach to changing organisational mindset and capabilities can help you overcome your current challenges and deliver breakthrough business performance. Dan Spiwack, CEO Tony Prosser, President Global Markets Elizabeth Dorey, Americas Casey Freeman, Canada


4. Petroleum Resources Ltd

  • Website: alphapetroleum.com
  • Headquarters: Greenwich, Connecticut, United States
  • Founded: 2001
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

Alpha Petroleum is a privately owned upstream oil and gas company operating in the North Sea. They focus on operated, development, and production activities.


5. First Reserve

First Reserve is a global private equity investment firm exclusively focused on the energy sector. With over 39 years of experience, they have raised over $32 billion of aggregate capital since inception. They specialize in worldwide exploration, development, and production of oil, gas, and natural gas liquids, as well as providing specialized equipment, manufacturing, and services supporting the global energy industry.


6. Petro-geotech

  • Website: pgi-ca.com
  • Headquarters: Old Greenwich, Connecticut, United States
  • Headcount: 1-10

Petro-Geotech Inc. is a consulting and Petroleum Engineering Software Development Company located in Calgary, Alberta, Canada. PGI has commercially developed and MS-Window-based software for design and simulation, predicting the onset of sand production, calculating the sand rate and reservoir productivity, filtering completion strategies, comparing different artificial lifting methods, and evaluating the enhanced production due to sand production. In addition, we provide technical support and consulting services in wellbore completion design on various geomechanics related problems. Our staffs have more than fifteen years practical experiences in solving petroleum-engineering problems, particularly in drilling, production, and numerical simulations. PGI has built up good relationship with our partners: FRACTECH from U.K Petroleum Recovery Institute Kudu Industrial


7. Atlantic Navigation Co

Atlantic Navigation Holdings is an integrated offshore supply operation based in the UAE, providing marine logistics services, ship repair, fabrication and other marine services primarily to customers in the Middle East. They have two divisions, MLS and SRM, which are vertically integrated to provide a wide range of services to their customers.


8. Ocean Surveys, Inc.

Ocean Surveys, Inc. (OSI) is a company based in Old Saybrook, CT that offers a broad range of services in hydrography, geophysics, oceanography, sediment sampling, precise positioning, and underwater inspection operations.


9. Numa Hammers & Bits

Numa Hammers is a leading rock drilling equipment company that serves the construction, oil & gas, mining, quarry, geothermal, water well, HDD, horizontal boring equipment, and other rock drilling industries. They offer a wide range of deep hole drilling products, including conventional rock drilling hammers & bits, reverse circulation hammers & bits, utility pole rock drills, and more. Their products are known for their unmatched quality, durability, and performance, and are manufactured in their U.S. factory.


10. Castleton Commodities International

  • Website: cci.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 2001
  • Headcount: 501-1000
  • LinkedIn

Castleton Commodities International (CCI) is a global energy company that specializes in energy commodities trading and infrastructure asset investing. With a focus on natural gas, power, and oil assets, CCI leverages its market expertise and operational capabilities to unlock value in energy markets. The company utilizes a data-driven approach to drive insight generation and opportunity identification.


11. Spine LLC

  • Website: spinellc.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 1999
  • Headcount: 1-10
  • LinkedIn

SPINE is a boutique marketing and communications agency that specializes in creating distinctive brands to help build strong businesses.


12. CS Unitec, Inc.

  • Website: csunitec.com
  • Headquarters: Norwalk, Connecticut, United States
  • Founded: 1991
  • Headcount: 11-50
  • LinkedIn

CS Unitec is a company that offers a wide range of industrial power tools and equipment. Their products include woodboring drills, polishing and maintenance products, HEPA vacuums, and hydraulic power tools. They also provide custom designed electric motors and pneumatic drive units. CS Unitec caters to various industries and offers specialized tools for hazardous environments and ex zones.


13. SSI Manufacturing Technologies

SSI Manufacturing is a precision machining company that offers CNC milling, CNC turning, wire EDM, and conventional EDM services. We are dedicated to delivering tight tolerances, consistent quality, and on-time deliveries to our customers. With a focus on superior production results, we strive to be an integral part of our customers' manufacturing process and contribute to the success of their products.


14. Oceanweather, Inc.

Oceanweather is a specialized metocean consulting firm with high-level technology to satisfy practical requirements in marine meteorology, ocean wave and current specification, ocean engineering, and statistics of environmental data.


15. Swistek Machinery America

  • Website: swistek.com
  • Headquarters: Milford, Connecticut, United States
  • Founded: 2008
  • Headcount: 11-50
  • LinkedIn

Swistek Machinery America specializes in Swiss-type automatic screw machines, offering new and used machinery, accessories, live tools, cutting oil, and inspection services.


16. GRT Corporation

  • Website: grtcorp.com
  • Headquarters: Stamford, Connecticut, United States
  • Founded: 1995
  • Headcount: 51-200
  • LinkedIn

GRT Corporation is a company that specializes in providing timely insights for predictive maintenance, reducing operational risk and guaranteeing high-quality power production. They offer predictive analytics that connect with all data types and sources, enabling teams to quickly act on insights and improve business results.


17. Santa Energy Corporation

Santa Energy is a family-owned company committed to providing the best in fuel services for homes and businesses in Fairfield and New Haven Counties. They offer a wide range of commercial services and fuels, including heating oil, propane, and solar. Their services include delivery, installation, and maintenance of HVAC and comfort equipment. With a focus on customer satisfaction and prompt service, Santa Energy is a trusted energy provider in the region.


18. Norbert E Mitchell Co Inc

  • Website: nemitchell.com
  • Headquarters: Danbury, Connecticut, United States
  • Founded: 1945
  • Headcount: 201-500
  • LinkedIn

Norbert E Mitchell Co Inc is an oil & energy company based out of 7 Federal Rd, Danbury, Connecticut, United States.


19. US Power Generating Company

Eastern Generation is a power generation company that operates various energy facilities across the United States. They specialize in the production of electricity using a combination of natural gas, oil, and diesel fuels. Their portfolio includes highly efficient combined cycle plants, peaking plants, and floating power stations. Eastern Generation focuses on providing reliable and flexible power generation solutions to meet the demand of residential and commercial customers.


20. Accordia Group LLC

Accordia Group LLC is a company providing alpha-generating software and services for asset management firms. They offer a portfolio management platform called RUBY, which is scalable, secure, and agile, delivering cloud-native technology and actionable intelligence to portfolio managers. Accordia Group LLC aims to improve efficiency, control, and reduce costs for asset managers in the Agility Economy™.


21. Delonti, Inc.

  • Website: delonti.com
  • Headquarters: Groton, Connecticut, United States
  • Founded: 1998
  • Headcount: 51-200
  • LinkedIn

Delonti is a leading provider of cloud products and services, specializing in RFID solutions, data analytics, and digital marketing strategies. We offer custom software development and integration of RFID sensing, indoor navigation, and artificial intelligence solutions to enhance security, profitability, and growth for companies of all sizes and industries. Our scalable cloud services and platform enable on-demand access to optimize performance. With a focus on customer experience and marketing intelligence, our solutions drive incremental sales and boost revenues. Contact us for complete RFID solutions and expert consultation.


22. Ensinger Precision Components, Inc.

Ensinger Precision Components is a plastic manufacturing company that uses high-performance thermoplastics to design and manufacture solutions for various industries. They offer injection molding, CNC machining, and other fabrication services to exceed customer demands in aerospace, defense, industrial, fluidics, medical, food processing, oil & gas, and semiconductor sectors.


Want to find more offshore drilling companies?


If you want to find more companies that offer state-of-the-art drilling technology and comprehensive industry updates you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
  • Contact data: Who are the owners and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!