A, robert gordon university aberdeen energy institute, course. Despite containing the largest known onshore oilfield in western europe, the. Reservoir management of the wytch farm oil field, dorset, uk. Field location and geology the field is located 70 km northwest of port harcourt within the north eastern corner of licence oml. Geologically it is set in the wessex basin, the oil is found in two. The publications of the bureau of mines, which was created in 1910 to carry on investigations in connection with the waste, recovery. Integrating 3d seismic data, field analogs, and mechanical models in the analysis of segmented normal faults in the wytch farm oil field, southern england, united kingdom simon a. The field has been developed with 11 well sites linked to a central gathering station. Shortly after the divestiture of wytch farm by bp, premier oil opted to extend their equity to a 30. Using sums not simulators to identify the infill potential. Reservoir architecture of the upper sherwood sandstone, wytch. Reservoir characterization of the sherwood formation in the wytch farm field depended on control from 48 wells, approximately half of which had been cored. Grain size analysis of drill cuttings and logging while drilling lwd are used to predict permeabilityheight kh in highangle wells. The data will be used to construct a new model of the origin of oil.
Excluding wytch farm, the east midlands province is the most, with a total gas and associated gas production onshore oil and gas mineral planning factsheet 3 oil and gas figure 2 uk onshore oil and gas production, 19792010 part. Success on dua will be targeting first oil production in 2009. Pdf the wytch farm oil field, currently on plateau, produces up to. Sitting on a huge structural anticline and occupying an area of 780 sq. Petroleum geology of southern england bibliography oil south. Wytch farm oilfield, dorset university of southampton. The facility, recently taken over by perenco was previously operated by bp. Development, evolution and petroleum geology of the wessex basin. The wessexchannel basin is a classic area of british geology, studied by.
The pipeline is 210km long and has a diameter of 29in. The discovery of the wytch farm oilfield in dorset has been described as by far the most exciting thing ever to have happened in the long history of united kingdom land exploration. Nb have a read of part ii of this posting which is updated with new information. Estimation of nettogross of among hydrocarbon field using well log and 3d seismic data. Wytch farm oil field subsurface coursework georgina. Mar 20, 2020 the wytch farm oil field is in the south of england, close to the isle of wight. Wytch farm resource learn about, share and discuss wytch. View enhanced pdf access article on wiley online library html view. It is hidden in a coniferous forest on wytch heath on the southern shore of poole harbour, two miles 3 km north of corfe castle. It is located in a coniferous forest on wytch heath on the southern shore of poole harbour, two miles 3.
Nov 20, 2017 plied these techniques to the wytch farm oil field in southern en gland, resulting in the geology from the university of akron, and a. Wytch farm is an oil field and processing facility in the purbeck district of dorset, england. It also gives practical guidelines as to how a production geologist can analyze the reservoir geology and fluid flow characteristics of an oil field with the aim of improving hydrocarbon recovery. The wytch farm oil field, currently on plateau, produces up to 110. The grane field reached a peak production of 243,000 barrels of oil per day bbld in march 2006.
We applied these techniques to the wytch farm oil field in southern england, resulting. These can be measured using lwd density logs and sieve analysis of cuttings. Why wytch farm is a poor fracking comparison for somerset. The hydrocarbon prospectivity of britains onshore basins. Technical report from the year 2007 in the subject engineering geotechnology, grade. The extensional palaeostructures of wytch farm and wareham are interpreted to have been charged by upwards migration of oil from mature liassic source rocks situated across the purbeckisle of. The absence of suitable nearby donor wells required the delivery of the. The plans for the artificial island, hook island, were then abandoned.
It explains the background to production geology in the context of oil field subsurface operations. Reservoir management of the wytch farm oil field, dorset. Pdf reservoir management of the wytch farm oil field, dorset. Wytch farm ploughs ahead will thornton celebrated as the largest onshore oilfield in western europe 500 mm bo, the wytch farm field in dorset, southern england, is an iconic field to the thousands of geoscientists and petroleum engineers who have worked and studied there over the last four decades. Wytch farm production history production highlights. Multi survey vintage data acquired over the wytch farm field in dorset off the south coast of england were previously processed in 2008 resulting in a kirchhoff depth. All the classic surface oil exploration elements were in place, oil seeps, oil shales, surface anticlines, and. The geology of the wytch farm field has been described by. Fault rendering used faps software provided by badley earth sciences ltd. The field was discovered in 1973 by british gas corporation, with first oil. The triassic sherwood sandstone is the principal reservoir in the wytch farm field, located in dorset, southern england. The sherwood sandstone group reservoir at wytch farm has been described by mckie, aggett and hogg 1998 reservoir architecture of the upper sherwood sandstone, wytch farm field, southern england. It is the largest onshore oil field in western europe. Planning extended reach wells in wytch farm field, uk.
Using sums not simulators to identify the infill potential of. This poster summarises the hydrocarbon geology of the english channel from prawle. Lately of the department of geology, the university of port harcourt, pmb. The wytch farm oil field in dorset, the largest onshore oilfield in europe and run by bp, has reserves on its own of around 500,000,000 barrels 79,000,000 m 3 of oil. Predicting well productivity from grain size analysis and. Formal examinations are conducted in january and in april. In the sherwood sandstone reservoir, wytch farm field, permeability is controlled by porosity and grain size. It is a mature oil field that has been extracting oil and associated gas from sandstone and limestone oil reservoirs in the wessex basin since 1979. The wessexchannel basin is a classic area of british geology.
Wytch farm a reprocessing case study tom massip1, alainchristophe bon2, phil smith1. Kh and productivity index pi are estimated using permeabilitybulk. Probe permeameter measurements were taken both at outcrop and in the laboratory. Winger 1997, 47pp with colour diagrams and colour photographs. This paper is in the geological society special publication, no. Dec 16, 20 the oil production facilities at wytch farm in dorset are often given as a model example of responsible fracking and justification of why unconventional gas should be pursued in somerset and elsewhere, for example.
The prospectivity of the english channel promote united kingdom 2015 outcrop the bridport sands are well developed in the proximity of the dorset coast. Risk and uncertainty in reservoir modelling mike christie heriotwatt university. Select bibliography on petroleum geology of southern england. Lithotypes were denned by detailed study of a nearby outcrop, where photo mosaics were mapped to establish lithotype geometry for the reservoir model. Outline oil fields what are they, what do they look like. The simulation results were then evaluated against the actual well test data in order to find the model which best represented the field geology. Oil production has become an established activity in the coastal zone with the development of wytch farm.
Probe permeameter measurements were taken both at outcrop and in the laboratory to. The wytch farm oil field is in the south of england, close to the isle of wight. Wytch farm divestment 18 january 2018 ithaca energy inc. The east midlands province provides 11% of uk onshore oil, 65% of the total excluding wytch farm. Thus this became the main procedure for the extraction of oil from the wytch farm offshore oil field. This has already been hinted at in the literature matthews et al. In order to test these models, numerical well test simulations were conducted using sector models extracted from the geological models constructed. Phases i and ii involved the development of the onshore part of the field. Wytch farm field, where source rocks are immature for oil. Extendedreach wells from f and m sites on a peninsula in poole harbor tap reserves as far as 10 km away. The offshore reserves are developed in a stepbystep manner, generally with each well slightly farther than the previous wells.
Chapter 3 concepts solutions doc chapter 3 concepts solutions pdf. Composed of predominantly arkosic alluvial sandstones, it has excellent reservoir qualities but includes significant mudstone, calcrete and calcrete conglomerate baffles which affect the vertical passage of fluids. Colter licence p1918 four licences in the wessex basin an area of strategic interest for uog containing europes largest onshore oil field wytch farm, which has to date produced over 450mmbbls colter licence p1918. Aug 24, 2011 the oil discoveries at wytch farm are indebted to a series of geological events and circumstances, which set out the basis for hydrocarbon development, migration and entrapment. The grane field oil project, norway offshore technology. Geology infill target roadmap gap analysis concept. The wytch farm oil field, located 17 miles from poole and six miles from wareham in the purbeck district, dorset, england, is the biggest onshore oil field in europe. The wytch farm oil field, the largest onshore oilfield in europe and run by bp, has reserves on its own of around 500 million barrels of oil. Wytch farm a reprocessing case study tom massip1, alainchristophe bon2, phil smith1, henna sheraziselby1, gordon roberts3. Approximately the same distance from wytch farm m drill site as the proposed 9872 ultra long reach well.
Wytch farm field summary the wytch farm field, operated by perenco uk limited, is located in offshore blocks 986a all and 987a all and onshore blocks sy88b all, sy98a all and sz8a all in dorset, england. Petroleum geology of southern england bibliography oil. Wytch farm oilfield is situated in southern england, dorset and is europes largest onshore oil field. Estimation of nettogross of among hydrocarbon field. Colter licence p1918 four licences in the wessex basin an area of strategic interest for uog containing europes largest onshore oil field wytch farm, which has to date produced over. It is hidden in a coniferous forest on wytch heath on the southern shore of poole harbour, two miles 3 km north of. The geology of the wytch farm field has been described by colter and havard. Lectures are supplemented by field trips, seminars from industry and communication skills. So far, the province has provided around 6 million tonnes of oil.
Multi survey vintage data acquired over the wytch farm field in dorset off the south coast of england were. Including wytch farm, proportionately the east midlands province provides 11% of uk onshore oil. Thanks to richard fox at bp for field assistance in southern england and to giles watts at bp for detailed information about wytch farm oil field. Data is provided on eleven fault surfaces imaged in a 3d reflection seismic survey for the wytch farm oil field in southern england. Bridport oil bleed from core supports oil migration through the bridport to wytch farm. The triassic fluviolacustrine sherwood sandstone, at 1535mtvdss true vertical depth, subsea, is the largest and most prolific reservoir. This paper intends to summarize available information in order to explain the originate of wytch farm oilfield. In later years extensive horizontal drilling became feasible.
The field is currently producing at a rate of more than 200,000bbld. It is europes largest onshore oil field, although it has a significant offshore extension. Most oil and gas fields are found in sedimentary rocks such as sandstone and. The telegraphs the town where fracking is already happening. This particular section is based around reservoirs the. Interpretation software was provided to stanford university and the university of idaho by schlumberger geoquest.
Isins us465676aa22 usc48677aa34 ithaca or the company announces that it has entered into an agreement for the sale of its entire interest in licences pl089, p534 and pedl 328, which contain the onshore wytch farm field, to. The prospectivity of the english channel oil and gas authority. Oil or gas deposits are found at much deeper levels in the ground than the other minerals worked in hampshire such as sand, gravel or clay. Sitting on a huge structural anticline and occupying an area of 780 km2, the cretaceous reservoirs of the great burgan field still account for most of kuwaits oil.
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