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The Humbly Grove, Herriard and Hester’s Copse Fields, UK onshore.

Gluyas, J.G. and De-Paola, N. and Imber, J. and Jezierski, T.M. and Jones, R.R. and Jordan, P. and McCaffrey, K.J.W. and Nielsen, S. and Pongthunya, P. and Satterley, A. and Sowter, A. and Wilkinson, M. and Moors, A. (2020) 'The Humbly Grove, Herriard and Hester’s Copse Fields, UK onshore.', Geological Society memoirs., 52 . pp. 74-81.

Abstract

The Humbly Grove Field has, for the UK, a unique development history. It was discovered as an oilfield in May 1980 and produced as an oilfield until 2000 along with small satellite fields Herriard (developed) and Hester's Copse (not developed). Peak production of 2219 bopd was achieved during July 1986 but, by October 1988, the rate had fallen to around 1000 bopd, a rate that was more or less maintained until October 1995 after which the production fell rapidly. At this point the decision was taken to reconfigure the field as a gas storage facility. Significant renewed pressure depletion occurred between 2000 and 2005, following which first cushion and then storage gas was injected into two reservoirs: the Middle Jurassic, Great Oolite Group and the uppermost Triassic, Rhaetian Westbury Formation. Gas storage operations commenced in 2005 and the reservoirs have undergone cyclical gas injection and gas withdrawal since that date. The cyclical injection of gas and re-pressuring of the Great Oolite reservoir causes mobile oil to be swept towards dedicated oil production wells. This operates effectively as an enhanced oil recovery scheme. The co-produced liquid hydrocarbons provide a valuable secondary income stream for the field.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1144/M52-2018-78
Publisher statement:Gluyas, J.G., De-Paola, N., Imber, J., Jezierski, T.M., Jones, R.R., Jordan, P., McCaffrey, K.J.W., Nielsen, S., Pongthunya, P., Satterley, A., Sowter, A., Wilkinson, M. & Moors, A. (2020). The Humbly Grove, Herriard and Hester’s Copse Fields, UK onshore. Geological Society Memoirs 52: 74-81. https://doi.org/10.1144/M52-2018-78. © Geological Society of London 2020.
Date accepted:27 January 2020
Date deposited:01 February 2019
Date of first online publication:30 October 2020
Date first made open access:30 October 2021

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