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Keywords: chalk
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Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210042-MS
... Abstract It is well-known that seawater flooding has been a huge success for hydrocarbon recovery from the fractured chalk reservoir, Ekofisk, on the Norwegian Continental Shelf. Extensive laboratory studies the last decades have shown that Smart Water flooding has potential of greatly...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019
Paper Number: SPE-195831-MS
... Abstract Compaction of the reservoir chalk (e.g. surface subsidence) may facilitate oil production. However, only few works have linked smart water flooding with chalk compaction and additional oil recovery. In this work, core flooding experiments with sequential injection of low salinity...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191682-MS
... The Niobrara Formation has two members: the lower Fort Hays Limestone Member and the upper Smoky Hill Member (Sonnenberg, 2012). The Smoky Hill Member consists of alternating chalks and marls. The marls are source rocks while the chalks are reservoirs. In descending order, these individual units...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 28–30, 2015
Paper Number: SPE-175018-MS
... between crude oil, brine, and the carbonate surface. In this research, we extend the previous model for low salinity water flooding to both chalk and limestone cores. We examine the role of mineralogy in low salinity waterflooding by developing a mechanistic model for wettability that includes surface...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170981-MS
...Completion Optimization Abstract The Valdemar Field is located in the Danish North Sea sector with the target reservoir being a Lower Cretaceous "dirty chalk" containing up to 25% insoluble fines, >20% porosity and permeability below 0.5 mD. The formation will not produce commercial...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170920-MS
.... High oil recovery was observed during miscible, supercritical CO 2 injection (R F =95% OOIP after 5 days) in the laboratory using an artificially fractured chalk core plug. The development in 3D fluid saturations from CT-imaging made it possible to study the oil displacement in the vicinity...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2013
Paper Number: SPE-166430-MS
... 500-620 175-215 1.10 0.30 Lower North Sea group Upper Eocene 620-630 125-200 1.15 0.30 Bruxellian sand 630-750 115-205 1.20 0.30 Lower Eocene 750-950 135-165 1.40 0.30 Paleocene clay 950-1000 135-165 1.50 0.30 Chalk CK Omeland chalk 1000-1750 55-100 14 0.30...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 8–10, 2012
Paper Number: SPE-158958-MS
... loadings. Cutting structure balance and directional response can also be assessed. Objectives With the bit in chalk and the reamer in claystone, more of the applied weight reaches the bit. When both cutting structures are in chalk, the potential for stick slip increases significantly. This scenario...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 30–November 2, 2011
Paper Number: SPE-147056-MS
... (CCS) procedures for reducing CO 2 from the atmosphere. Although CO 2 -EOR is a fairly well known procedure, it has never been performed in North Sea chalk reservoirs ( Olsen, 2010 ). Due to small grain size, chalk from Danish North Sea reservoirs is characterized by high specific surface ( Scholle...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 4–7, 2009
Paper Number: SPE-123651-MS
... Abstract Numerous casing and production liner deformation/failure problems have been reported in high porosity chalk formations in both the overburden and the reservoir sections, causing costly operation problems that prevent workovers and recompletions. This paper presents the results...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-116145-MS
... hydraulic fracturing Simulation porosity wettability Upstream Oil & Gas experiment chalk sensitivity analysis fracture capillary pressure pressure curve waterflooding numerical simulation permeability saturation development numerical model reservoir Introduction Large oil...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-115699-MS
... Winkler et al. 2006 ii gave thorough and excellent overviews of the major components in MR logging. The same principles are valid for the MR principles used on this well on the Oseberg field. In the Oseberg chalk the hydrocarbons were expected to be light enough to distinguish between...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, November 11–14, 2007
Paper Number: SPE-110340-MS
... better. Horizontal real time wellbore placement is then accompanied by real time reservoir characterization through real time formation pressure measurement to validate any fluid movements and fluid compartmentalization of the reservoir. This paper is based on wells drilled in a chalk field in the North...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 29–October 2, 2002
Paper Number: SPE-77761-MS
... Abstract The objective of the present project was to study how high temperatures affect the different mechanical parameters of chalks. Two types of high porosity outcrop chalks were used. Several series of Brazilian, uniaxial and triaxial compressive tests have been performed at both ambient...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 3, 2001
Paper Number: SPE-71506-MS
... in diameter and additional bridges formed. Due to the capillary continuity of the wetting phase, a viscous pressure drop was established across the stacked core plugs, providing a viscous component to the total oil recovery. fracture bridge baldwin graue wettability plug chalk mri tomography...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 3, 2001
Paper Number: SPE-71322-MS
... Abstract Mæsk Olie og Gas AS has as operator for the Danish Underground Consortium (DUC) discovered and initiated the development of the Halfdan accumulation located in the southern part of the Danish North Sea. The accumulation comprises oil and gas in a low permeability chalk reservoir...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 1–4, 2000
Paper Number: SPE-62934-MS
... Abstract The wettability of Berea and chalk samples for gas-oil and gas-water fluids were altered from strong liquid-wetting to intermediate gas-wetting. Two polymers, FC-722 and FC-759, were used to alter the wettability. FC-759 is soluble in water and some 20 times less expensive than FC-722...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–6, 1999
Paper Number: SPE-56426-MS
... chalk and necessitated revising the rock compressibility functions at Ekofisk to include the effect of additional compaction due to the water weakening. The development and implementation of the water induced compaction functions at Ekofisk is presented in this paper. Rock compressibility is now input...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–6, 1999
Paper Number: SPE-56514-MS
... Abstract The present paper describes the basis for delineating a significant volume of non-structurally trapped oil within low permeable chalk at the flank of the mature Dan field offshore Denmark. Drilling of extensive long horizontal wells at the flank of the main field, including one...
Proceedings Papers
Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–6, 1999
Paper Number: SPE-56672-MS
... The other block, CHP8, was aged in crude oil at 90°C for 83 days at an immobile water saturation of 28%PV. A North Sea crude oil, filtered at 90°C through a chalk core to remove particles and wax which may plug pore throats, was used to oilflood the block and then for the aging process. Two twin...
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