SPE Annual Technical Conference and Exhibition 2012
DOI: 10.2118/159132-ms
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Geosteering the Impossible Well: A Success Story from the North Sea

Abstract: New technologies have been developed to achieve a higher degree of accuracy in well positioning as operators have been drilling increasingly challenging hydrocarbon pockets.The Nini East Field, Danish North Sea sector, represents a significant drilling challenge. The target is a postdepositionally remobilized sand reservoir of 2 15 meters thickness. Because of the reservoir's remobilized nature and its low resistivity, none of the standard well placement methods or the current bed-boundary mapping tools were s… Show more

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Cited by 13 publications
(6 citation statements)
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“…Using the updated geomodel, geosteering decisions are made. Combinations of real-time data from multiple sources are used to support two types of decisions: (1) directional change and (2) stopping point (Lindsay and Hughes 2008). The drilling team may change the well direction to optimize well position or steer back when the well is about to exit the reservoir.…”
Section: Review Of Current Geosteering Approachesmentioning
confidence: 99%
See 1 more Smart Citation
“…Using the updated geomodel, geosteering decisions are made. Combinations of real-time data from multiple sources are used to support two types of decisions: (1) directional change and (2) stopping point (Lindsay and Hughes 2008). The drilling team may change the well direction to optimize well position or steer back when the well is about to exit the reservoir.…”
Section: Review Of Current Geosteering Approachesmentioning
confidence: 99%
“…The sensor is on the drillstring (15 m behind the drill bit), and, thus, the LWD tool provides behind-the-bit DTBB whereas the main uncertainties affecting directional change decisions are the ahead-of-the-bit DTBB uncertainties. DOD for this type of LWD tool varies according to the resistivity contrast between reservoir formation and adjacent formation (Omovie and Pearson 2012;Leveque et al 2012). In this case, a DOD of 3 m is used.…”
Section: Fig 5-timeline Comparison Between Strategic-decision Procesmentioning
confidence: 99%
“…The DDR tool has been run on a large number of wells in dozens of fields around the world (Beer et al 2010;Constable et al 2012;Jenkins et al 2012;Leveque et al 2012;Dupuis et al 2013). The tool currently exists in two collar sizes, fit for hole sizes from 14¾ in.…”
Section: The Deep Reading Solutionmentioning
confidence: 99%
“…The new tool has been field tested in several locations worldwide in the last years (Beer et al, 2010;Constable et al, 2012;Jenkins et al, 2012;Leveque et al, 2012). The modular concept allows the (multiple) transmitter and receiver subs to be placed on the bottomhole assembly (BHA) based on the need for depth of investigation in specific scenarios, since the transmitter-receiver distance directly governs the depth of investigation of a measurement (together with the operating frequencies).…”
Section: General Concepts Of Real Time Well Placement Inversionmentioning
confidence: 99%