Gregory John Herrera

Smedvig AS performs investment portfolio services. The firm invests across a range of asset classes and has considerable experience in investing in the natural resources sector globally. It offers direct investments within property, private equity, episodic and thematic investments, and invests with private equity funds, long only funds, and hedge funds. The company was founded in 1989 and is headquartered in Stavanger, Norway.

Det Stavangerske Dampskibsselskab AS operates as a shipping company. It offers ferries and express boat services. The company was founded in 1855 and is headquartered in Stavanger, Norway.

EV Private Equity US Inc (EV Private Equity) is an independent venture capital firm founded in 2002 by Ole Melberg. The firm is headquartered in Houston,Texas with additional offices in Norway, and United Kingdom.

Stingray Ltd. manufactures musical instruments. The private company is based in London, UK.

Onesubsea Operations Ltd. develops subsea oilfield equipment. Its products include MARS production optimization modules and production optimization simulation software. The firm services include reservoir management, subsea engineering, and subsea pumping and process systems. The company was founded in May, 1999 by Ian Donald and is headquartered in Portlethen, the United Kingdom.

Viju AS delivers collaboration solutions for communication industry. The firm offers solution for video conferencing, telepresence, and audio visual integration and collaboration, and visualization solutions. Its services include professional, deployment, maintenance, managed, and subscription services. It also supplies conference room; training rooms; solutions for auditoriums and experience centers; solutions for public spaces, such as reception areas and coffee bars; collaboration rooms for the oil sector; on-the-spot diagnosis; and display solutions for use in the sports and media industries. The company was founded by Geir Samsonsen, Jostein Måsvær Vatne, and Atle Aurdal in 1998 and is headquartered in Sandnes, Norway.

Ziebel AS develops fiber optic intervention technology. It designs and manufactures wireless real time permanent gauges for oilfield applications. The firm offers artificial lift solutions such as umbilical wire replaceable electrical down hole pumps and industrial solutions, including torque loggers, controllers, pressure test systems and custom industrial systems. The company was founded by Henning Hansen and David Stanly Ottesen on January 2, 2006 and is headquartered in Tananger, Norway.

Epi-V LLP is a private equity firm headquartered in UK. The firm was established in 2007 following the financial commitment of LDC which is part of Lloyds TSB Development Capital. It invests in emerging technology and service firms in the upstream oil and gas services sector.

Deep Casing Tools Ltd. designs and manufactures advanced casing and completion tools for the oil and gas and geothermal industries. It offers Turbocaser Express, Turborunner, Shalerunner, and Turbocaser Deepwater services. The company was founded by Derek Frederick Herrera in 2008 and is headquartered in Aberdeen, the United Kingdom.

Zeropex AS manufactures equipment for generating renewable energy from the pressure drop in water systems while improving management of pressure and flow in such networks. Its product Difgen, is a high-performance hydropower generator which also functions as a pressure reduction valve (PRV) for use in water systems and similar applications. It comprises a turbine, a generator and a control system. The firm also manufactures in-pipe micro turbines proven in water industry use. Its micro turbines also operate as a smart control valve which is able to manage both pressure and flow in water networks. The firm offers site surveys with survey report and recommendations, installation design, installation and commissioning and service agreements. The company was founded by Trond Melhus, Per Reidar Ørke and Jan Kristian Vasshus in 2006 and is headquartered in Stavanger, Norway.

EnerMech Ltd. engages in provision of mechanical engineering products and services. It offers industrial, process, pipeline, training, electrical and instrumentation, valve supply and manufacture, cranes and lifting, subsea umbilicals and cables, equipment rental and valve integrity management services. The firm serves the petrochemicals, LNG, offshore and onshore oil and gas, midstream, power, defence, renewables, infrastructure and mining markets. The company was founded by Doug Duguid on March 1, 2008 and is headquartered in Aberdeen, the United Kingdom.

TS Shipping Invest AS engages in shipping operations. It also offers logistic services of goods and consumables. The company was founded on September 20, 1995 and is headquartered in Haugesund, Norway.

Knutsen NYK Offshore Tankers AS owns and operates crude oil shuttle tankers. It controls and manages whole value chain of activities, which includes new building, chartering, vetting, crewing, technical and commercial management, financing, procurement, and general administration. The company was founded in 2010 and is headquartered in Haugesund, Norway.

Part of Citigroup, Inc., Citibank London is a commercial bank that provides banking services. The company is based in London, UK.

Produced Water Absorbents, Inc. provides waste treatment solutions and services to the oil and gas industry. It's services include mixing technologies, energy, water technologies, and integration. The company was founded in June 2005 and is headquartered in Houston, TX.

Novas Consulting Ltd. provides integrated subsurface studies and due diligence services. It offers business development support, merger and acquisition, corporate strategic support and finance and regulatory support services. The firm serves the oil and gas industry. The company was founded by Philip N. Clarke in March 2005 and is headquartered in London, the United Kingdom.

Abrado, Inc. provides cleanout tools, chemical stimulation treatments and diagnostic technology services to the drilling sector. It offers well abandonment, and section milling services. The company was founded by Alexander Esslemont and C. Mitchell Cox in 2009 and is headquartered in Houston, TX.

Halfwave AS provides advanced inspection services based on acoustic resonance technology to the oil & gas industry. It offers pipeline and subsea inspections. The company was founded on June 10, 2011 and is headquartered in Ovre Ervik, Norway.

Project Development International Ltd. provides construction, engineering and project management services. It also offers engineering and technical, procurement and offshore support and decommissioning services. The company was founded in 2003 and is headquartered in Aberdeen, the United Kingdom.

Melberg Partners Holding AS provides commercial and financial advisory services.

FourPhase AS provides sand and sediments removal products for oil and gas production. It specializes in optimizing oil and gas production by reducing sediments from the production flow. The firm optimization is achieved by using a dynamic desander system allowing higher production within defined sediments-criteria. It supplies dynamic desander systems in the market. The company was founded by Øyvind Hansen Heradstveit, Jarle Kvamme, Anders Mathias Arefjord, and Jarle Nytræ in January 2012 and is headquartered in Kokstad, Norway.

Nansen Capital Partners AS operates as an asset manager. The company was founded by Tor Dagfinn Veen and Age Westbo in 2015 and is headquartered in Stavanger, Norway.

MorphPackers Ltd. provides steel packers services. It specializes in refrac and production packers for the global oil and gas sector. The company was founded in 1984 and is Aberdeen, the United Kingdom.

Romar Topco Ltd. is a private company based in Ellon, UK. The British company was founded in 2014.

Caltec Production Solutions Ltd. engages in the provision of improved oil recovery solutions used to increase production from mature oil and gas fields and wells. The company was founded on March 7, 2018 and is headquartered in Milton Keynes, the United Kingdom.

Part of Havens Hospices Trading Co. Ltd., Havens Development Co. Ltd. provides business support services. The company is based in Aberdeen, UK and was founded in 2002.

Seadrill is a leading offshore deepwater drilling company, aiming to be the customers' most important partner in making oil and gas available in a safe and cost-effective manner. The company operates a versatile fleet of 50 units that comprises drillships, jack-up rigs, semi-submersible rigs and tender rigs for operations in shallow to ultra-deepwater areas in harsh environment and benign environments.

Wellservices BV provides services to the oil and gas industry. Its services include, coiled tubing, pumping, nitrogen, acid stimulation, capillary coil, radial jetting, memory logging, pipeline, fishing, valve repair and refurbishment, bolting and tensioning, and well cleaning. The firm’s activities are organized in three business units: Coil Services, Slickline Services and Pipeline Nitrogen Services. The company was founded by Greet Prins and Koos Frieling 2004 and is headquartered in Emmen, the Netherlands.

Zi-Lift AS develops, manufactures and markets permanent magnet materials. The company is headquartered in Tananger, Norway.