David Andrew Hadfield

Part of SLB NV, Schlumberger Plc is a British technology company that specializes in oilfield services. The company is based in Horley, UK. The company provides effective fracturing services to help connect wellbores to more reservoir rock. Founded in 1977, the company achieves accurate depth control and ensures target zone coverage while controlling hydrostatic balance.

Sensor Highway Ltd. designs, manufactures and deploys fiber optic sensors. The firm offers factory, site acceptance tests, field splicing, project documentation and site supervision. It provides pipeline, LNG, power cable monitoring and subsea production applications. The company was founded by Alan Piesse in 1980 and is headquartered in West Sussex, the United Kingdom.

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.

Part of SLB NV, Diamould Ltd. is a British company that manufactures electric and hydraulic connectors. The company is based in London, UK. The company was founded in 1999. Diamould was acquired by SLB NV on May 17, 2005.

United Wire Ltd. manufacturers and distributes wire-cloth products, screens and filters used in the production of high-tech filters and fireguards. Its products include polymer/plastic filtration, fine filtration, screening, sand control, processing bands, cylinder mould covers, catalyst support and separators. The company was founded by William McMurray in 1825 and headquartered in Edinburgh, the united Kingdom.

Specialised Petroleum Services Group Ltd. provides well-bore clean-up products and services for the offshore market. The company is headquartered in Westhill, the United Kingdom.

OneSubsea UK Ltd. designs, manufactures and sales engineering products. The firm provides its services to gas transmission, electrical and other engineering industries. The company is headquartered in London, the United Kingdom.

Part of SLB NV, Schlumberger UK Holdings Ltd. is an investment holding company. Schlumberger UK Holdings Ltd. is based in West Sussex, UK. Founded in 1982.

Meta Downhole Ltd. develops and delivers leading-edge downhole isolation solutions to the oil and gas industry. The firm's patented Metalmorphology ensures isolation integrity for the life of the well. It offers morphable casing reconnect, liner tieback, internal clad, and isolation barrier technologies. Meta Downhole was founded on February 12, 1990 and is headquartered in Aberdeen, the United Kingdom.

M-I Holdings (UK) Ltd. is based in Aberdeenshire, UK. Part of SLB NV, M-I Holdings (UK) Ltd. is a holding British company that operates subsidiaries providing oilfield services. Founded in 2002.

Part of SLB NV, Red Baron (Oil Tools Rental) Ltd. (The) is an investment holding British company. The company is based in Westhill, UK.

Schlumberger Oilfield UK Plc provides oil and gas wells drilling services. The company is headquartered in West Sussex, the United Kingdom.

Part of SLB NV, OneSubsea Investments UK Ltd. is an investment holding company. OneSubsea Investments UK Ltd. is based in London, UK.

Asset Development & Improvement Ltd. provides consulting services to the oil and gas industry. It offers services in the asset and development stage; conceptual engineering, opportunity framing, and software and systems in the exploration and appraisal stage. The company was founded by James Paton, Tim Sibley, and Claire Macleod in 2006 and is headquartered in Aberdeen, the United Kingdom.

Part of SLB NV, Schlumberger UK Ltd. is an investment holding company. Schlumberger UK Ltd. is based in West Sussex, UK. Founded in 2010, Schlumberger functions as an investment holding company.

Part of Schlumberger NV, Schlumberger Cambridge Research Ltd. is a technology company that specializes in oilfield services. Founded in 1958, the company is based in Cambridge, UK. The British company's mission is to drive energy innovation for a balanced planet. The company's focus is on redefining business as usual for production in the oil and gas industry.

Part of SLB NV, Peak Well Systems Ltd. is a British company that designs, manufactures, and supplies well intervention tools for the oil and gas industries. The company is based in Westhill, UK. Peak Well Systems was founded in 2008.

Part of SLB NV, Rubislaw Investments Ltd. is an investment holding British company. The company is based in Westhill, UK. Rubislaw Investments was founded in 2002.

Flaresim Ltd. engages in the provision of software for estimation of thermal radiation from a flare system. Its services include softbits consultancy, flare consultancy, flare system training, and engineering software development. The company is headquartered in Gatwick, the United Kingdom.

Part of SLB NV, OneSubsea Offshore Engineering Ltd. is a British technology company that focuses on driving energy innovation for a balanced planet. The company is based in London, UK. The company is dedicated to making hydrogen an energy carrier of choice to enable the energy transition.

Cameron Petroleum (UK) Ltd. is based in London, UK. Part of SLB NV, Cameron Petroleum (UK) Ltd. is a holding British company whose subsidiaries manufacture oil & gas machinery.