Apr 27, 2018 a shell study of threatened marine fauna on draugen in the autumn of 2011 indicated that some coral structures exist in the area around draugen, close to existing pipelines and the g3 well. Oct 12, 2018 at an early stage in maturing draugen, ahead of the pdo, stock tank oil initially in place stoiip was put at 1. We cannot guarantee that procedures in field geology book. The njord field is located at haltenbanken 30 km west of the draugen field at a water depth of 325 m. Draugen is an oil field in the norwegian sea with a sea depth of 250 metres 800 ft. The depth of top reservoir for the fields on production, are in the range of approx. The field is hosted by a lowrelief northsouthtrending anticline measuring some 20 by 6 km. C the draugen field and location of the well 640791. The shallowest fields are located towards south west in the graben region. Digital well construction collaboration ensures one truth case study. Samples from st7h well offshore tano basin in western region of ghana have been subjected to palynofacies, palynological and geochemical analysis.
However, draugen field is bring forthing oil chiefly from rogn formation informally the name froa is used of late jurassic age and. The main reservoir contains sandstone of rogn formation, found to be of the late jurassic age. Ormen lange is a natural gas field on the norwegian continental shelf. American association of petroleum geologists, isbn 08918330, pp.
Introduction to field mapping of geologic structures geol 429 field geology department of earth sciences montana state university dr. Whether its fossils, magnetic fields or types of landforms, they are often concerned with reconstructing the past. Draugen was discovered in 1984 and the oil is found in the garn and rogn formations, of which the latter holds approximately 90% of the reserves. The main reservoir is in sandstone of late jurassic age in the rogn formation. Reservoir geology of draugen field, offshore norway. It was the first field to be developed in mid norway. Bolboforma and dinoflagellate cysts stratigraphy indicate that the base of the molo formation in its southern distribution area draugen field, trondelag platform is of late miocene age close to 9 ma. The 196878 symposium was held in houston, texas, april 14, 1979, and the papers were published in aapg memoir 30, december 1980. Click get books and find your favorite books in the online library.
The draugen field was discovered by norske shell in 1984 on the trondelag platform with the geographic expedition good 640791. Nov 19, 2020 draugen is a large oil field located in the norwegian sea in a water depth of around 250 metres. The obtained late miocene to early pliocene age contradicts ages previously given by the biostratigraphic consultants as well as our previous datings of wells and bore. The field is named after the famous longship ormen lange of olaf tryggvason, a. Pdf bedrock geology on the midnorwegian continental shelf. Palynostratigraphical principles as applied in the jurassic. Field geology i the brunton and the map september 26, 2005 lab exercise 1 structural data collection in the field ctd. Miocene sedimentary sequences of the sardinian graben.
Examples of such applications illustrate the following. Compression experiment in tectonic modeling lab exercise. The draugen field is an elongate, low relief, anticline containing mainly multidarcy sandstones. Draugen was discovered in 1984, and the plan for development and production pdo was approved in 1988. This part of the molo formation was contemporaneous with the middleupper part of the kai formation. Three of the fields are associated with anticlinal traps formed as a result to salt movement, while one could easily be described as the stratigraphic trap namely the silver springsrenlin field. The draugen oil field is operated by norske shell, which also owns a 26. Improved reservoir management through integration of 4d. The obtained late miocene to early pliocene age contradicts ages previously given by the biostratigraphic consultants as well as our previous datings of. Jan 17, 1990 draugen field, geological model for the upper jurassic rogn formation. This is why paleo is common in these fields of study.
The draugen oil field lies in block 64079 in the haltenbanken oil and gas province. The field has been developed with a concrete fixed facility and. Before an oil field can be brought on stream, it has a long history. The chief formation is the rogn formation which is interpreted to be a shallow marine sand saloon on the trondelag platform in late jurassic with really good reservoir belongingss and aquifer support. Some fields are formed as domal structures overlying salt diapires of zechstein age and some are anticlinal structures. Five further appraisal wells were drilled between 1984 and. The engineering geology field manual, in conjunction with the engineering geology office manual, forms the basis for the mutually beneficial exchange of ideas by reclamation geologists.
The rogn and garn deposits are homogeneous and both lie at a depth of 1,650m. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. In addition two subsea wells would provide early production. Draugen oil field, north sea offshore technology oil and.
Draugen, gullfaks, piper, ramadan, and rio itaunas fields. Corals in the norwegian sea and around draugen draugen. The small size and abundance of microfossils in drill samples and their rapid evolution makes them valuable for correlation, age determination, unconformity identification, depositional sequence characterization, lithostratigraphic characterization and palaeoenvironmental interpretation in the. Draugen oil field, north sea offshore technology oil. Geology has evolved greatly since i wrote the manual of field geology in the 1950s. The field lies in block 64079 in the haltenbanken area which is situated about 140km from kristiansund, norway. Sedimentological aspects of oil fields in the niger delta. Palynofacies analysis of ida4 well, niger delta basin. The subject of field geology has been divided into the four broad topics of geology, geochemistry, geophysics and geofluids to facilitate explanation of the topics. The field has been developed using a concrete monotower with an integrated deck and five subsea satellite installations on the main field. The book presents the methods of structural analysis from microscopic to map scale, describes modern techniques used in field and laboratory and offers a balanced picture of modern structural geology as it emerges from combined field, experimental and theoretical studies. The field is located 150 km off the coast of norway and 200 km south of the arctic circle, in water depths of 240280 m. A geochemical assessment of petroleum from underground oil.
The peak on the right is rearguard mountain, which is a few kilometres northeast of mount robson, the tallest peak in the canadian rockies 3,954 metres. Paleo is short for paleolithic which often refers to the geologic. The heidrun field is located on haltenbanken in the norwegian sea at a depth of 350 metres 1,150 ft. Pdf procedures in field geology download full ebooks. Miocene sedimentary sequences of the sardinian graben system. The molo formation, deposited by coastal progradation on. The field has been developed with a concrete fixed facility and integrated topside, and has both platform and subsea wells. The draugen field in the haltenbanken area on the midnorwegian shelf was discovered by norske shell in 1984 when the exploration well 640791 encountered oil in a previously unknown upper jurassic sand. Sedimentology and facies analysis of ancient sand ridges. Experienced geologists will find useful reminders and new procedures and special tech niques, while less experienced engineering geologists and. Palynostratigraphical principles as applied in the. The success of memoir 14 and the worldwide interest shown for data on giant fields prompted aapg to schedule a symposium on giant fields at the end of each subsequent decade. Excellent reservoir properties with relatively few highrate wells and an expected recovery factor exceeding 60% make draugen one of the best performing fields offshore norway.
Sc 0506 gullfaks field, north sea nalkane c9c34 yield in different wells, average of all dst samples. The northern part of the field is developed with subsea facilities. At an early stage in maturing draugen, ahead of the pdo, stock tank oil initially in place stoiip was put at 1. Geology is displayed on a grand scale in mountainous regions, perhaps nowhere better than the rocky mountains in canada figure 1. Palynofacies analyses of the strata penetrated by ida4 wells were carried out with the aim of studying the stratigraphic sequence penetrated by the well in order to establish palynostratigraphic zones, relative age and the paleoenvironment of deposition. History of draugen draugen field resume field properties located in haltenbanken area, 140km north of kristiansund discovered in 1984 and production start 19. It is situated 120 kilometres 75 mi northwest of kristiansund, where seabed depths vary between 800 and 1,100 metres 2,600 and 3,600 ft. Det norske veritas analysed acquired videos and photographs in 2012, and concluded that there were no redlisted sponge species or habitat types. Geology is in many ways the most complex of sciences, as a complete understanding of the workings of the earth requires training in mathematics, chemistry, physics, biology, and astronomy. Geology, jackson school of geosciences, university of texas at austin, austin, texas. We have much to seek at the outcrop, and the rising costs of field work compel us to recognize key features the first time around.
Download full procedures in field geology book or read online anytime anywhere, available in pdf, epub and kindle. The draugen field is approaching 30 years of production and is expected to deliver for several more years to come. Information on geology and reservoir properties can for most fields be found in the exploration well data available. The other deposit, located in the west, is the garn formation of middle jurassic age. Several reservoir stones have been identified in the geographic expedition stage. Gor variation implies maturity variation and thus filling direction.
It is stressed, however, that these topics are seldom approached in isolation and modern geological surveying utilizes components of all these subdisciplines. The acid methods of sample preparation for palynofacies. Five palynofacies associations i v have been identified based on the percentage relative abundances of the sedimentary organic matter som. Draugen is a field in the southern part of the norwegian sea. The molo formation, deposited by coastal progradation on the. Selected bibliography of arctic geology with emphasis on. The lack of well control for the structural mapping has resulted in a relatively high degree of uncertainty for both the top reservoir structure and the inplace.
Advances in theory have transformed the formation mapping of that time into increasingly broader and more interpretive studies. These branches of geology specifically deal with time. The draugen field produces oil primarily from two reservoirs. Download pdf structural geology free usakochan pdf. The field is named after the famous longship ormen lange of olaf tryggvason, a 10thcentury viking king of norway. This sample is from the draugen field, and was produced from the upper jurassic rogn formation karlsen et al. The draugen field is located 100 km offshore norway. Play concept of draugen field biology essay freebooksummary. Fault propagation folds, backthrusts, and popup structure. Agr conducts reservoir modelling on okeas draugen field. Spekk formation is the producing reservoir in the draugen field. In 20, it produced 65,000 bbl of oil per day and 760 million cubic meters of natural gas. It was taken from the giant cantarell field in the gulf of mexico. This indicates that the main sediments source area was possibly related to fault uplift along the western margin of the trondelag platform, suggesting that both crystalline basement rocks and mesozoic sedimentary.
Figure 32 example of production data from the npd fact pages for the draugen field. B synthetic lithological column of the rogn fm in the well 640791. The reservoir lies at a depth of 1600 m subsea and has an oil column of 40 m. The field has excellent reservoir characteristics that have enabled a field development with a minimal number of appraisal and development wells given the areal size of the field. A digital subsurface geology model has been generated based on. Fifty ditch cutting samples within the interval of 21793523 m were analyzed. The 1987 plan for development and operation pdo assumed a central cluster of 6 deviated production wells and 3 subsea water injectors at each end of the field. Create free account to access unlimited books, fast download and ads free. A geochemical assessment of petroleum from underground.
That year, he joined the international projects group of the bureau of economic geology as a research scientist associate fo. The field has been developed with gas and water injection, using a floating concrete tension leg platform, installed over a subsea template with 58 well slots. The draugen field was discovered in 1984 by well 640791. Palynostratigraphy and palynofacies reconstruction of the upper jurassic to lowermost cretaceous of the draugen field, offshore mid norway. Improved reservoir management through integration of. Pdf procedures in field geology download full ebooks for free. Five additional explorationappraisal wells and 2d seismic assisted in delineating the reservoir. Draugen field is sandstone rogn formation a significant component. The 196878 symposium was held in houston, texas, april 14, 1979, and the papers were published in. D, e core pictures of the rogn reservoir in the draugen field. The production is declining and the operator of the field, okea asa, aimed to. Draugen field is regarded as one of the cardinal finds in the norse sea due to antecedently non envisaged upper jurassic formations. The figure show annual net production rate for oil equivalents oil, gas and natural gas liquids and annual production rate for water bottom. Pdf palynofacies and source rock potential of the st7h.
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