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Keywords: North Sea
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Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204017-MS
... mooring system in the North Sea with and without an RMS. These savings are achieved through significant reductions in AHTS Vessel time, MODU critical path time, and associated fuel and CO2e reductions during MODU mooring disconnection. Fig. 1 depicts the potentially realized fuel and CO2e savings...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204134-MS
... role in drilling optimization. Real-time monitoring of critical well construction operations was performed using specialized technologies. Optimized Viscous Reactive Pill (VRP) was successfully used for the first time in North Sea to provide cement plug base at deeper depths (7200-m MD) resulting in a...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 8–12, 2021
Paper Number: SPE-204014-MS
... Abstract North Sea lithologies are often complex creating a difficult environment to deliver effective zonal isolation with standard cementing practices. With ever-present weak, fractured, and unconsolidated formations, the practice of fully lifting heavier cement up the annular gap between the...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194166-MS
... Abstract With the increase in decommissioning/abandonment work in the North Sea, a major operator had the objective to permanently abandon a well that had been temporarily suspended. There were several key challenges associated with this project: high pore pressure and temperature, a completion...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2018
Paper Number: SPE-189665-MS
... Pressim, density log for the vertical stress and rock mechanical data from correlations based on tests on North Sea shales. These tests include tri-axial compression and fluid exposure under stress to evaluate time-dependent effects such as osmotic pressure, ion exchange and generally shale swelling or...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 14–16, 2017
Paper Number: SPE-184627-MS
... detected kicks earlier than the rig crew and geo-service company sensors both in GOM and the North Sea. In addition, how quickly was the kick detected and the driller informed will also be examined. With the CML system, the sensitivity for kick detection was greatly improved as the effect of rig motion on...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2015
Paper Number: SPE-173043-MS
... installations were used in numerous locations, but it was not until recently that such a case existed in the North Sea. An Operator in the North Sea offshore Denmark was developing a 10-12 well platform using UBD techniques to prevent damage to the producing zone. Initially they deployed the DIV several times...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, March 5–7, 2013
Paper Number: SPE-163568-MS
... for an operator in the North Sea. The expandable liner hanger was run to hang an 11-¾-in. liner inside a 13-3/8-in., 72# casing. During running of the liner, the hanger disconnected from the running tool, and the liner was lost down hole. A seal stem and a back up hanger were run into the hole. The...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 6–8, 2012
Paper Number: SPE-151334-MS
... best practices in upcoming drilling campaigns. wellbore design information wellbore integrity pore pressure drilling operation north sea pressure ramp evaluation estimation ecd cromer knoll group pore pressure prediction fracture gradient beta brent well resistivity real time...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 1–3, 2011
Paper Number: SPE-138852-MS
... (especially off-shore) and introduces costs that could be avoided. With the North Sea being a mature drilling arena, it requires ever more complicated well bores to access remaining deposits and therefore operators are continually looking for more cost-effective methods of achieving this. Coupled with the...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119402-MS
... retrofitted on the Rowan Gorilla V jack up in the North Sea. The rig went on location and the top drive performed satisfactoriy with no downtime on the first well for Total and at the time this paper was being written the well was drilled to 11,368 ft. Introduction Since the early 80's the top drive has...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119435-MS
... an oil field in the North Sea. A data filtering technique has been developed and applied to solve problems with noisy and erratic real-time signals. With correct input parameters, the system has clearly indicated unexpected measurements several hours before a pack-off problem occurred and therefore...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 21–23, 2006
Paper Number: SPE-98471-MS
... drilling operation trajectory North Sea drilling performance drill bit platform rotary steerable system presentation inclination Engineer new system Drilling Upstream Oil & Gas objective whipstock cutter ROP application drilling system vibration iadc spe 98471...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 21–23, 2006
Paper Number: SPE-98945-MS
... Abstract The well 34/8-A-6 AHT2 was drilled from the Visund Field Floating Production and Drilling Unit (FPDU) in the North Sea, and set on production in October 2005. The well was drilled to 9082 m/29796 ft measured depth and has an Along Hole Depth (AHD) reach of 7593 m/24911 ft, which is a...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 21–23, 2006
Paper Number: SPE-99068-MS
... a reservoir drilling-in fluid and, ideally, should be the same fluid minus any drilled solids. drilling fluids and materials drilling fluid selection and formulation drilling fluid chemistry North Sea oil-based mud drilling fluid formulation application Completion Fluid well control...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, February 23–25, 2005
Paper Number: SPE-92346-MS
..., the elastomers have been run in various open hole, casing, and tubing sizes. A total of around 60 deployments in Shell have been recorded, all of which were technically successful. Case examples of each of the three mentioned applications will be presented from Shell operations in the North Sea, the...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, February 19–21, 2003
Paper Number: SPE-79863-MS
... paper discusses how we transferred the technology to the North Sea. The subject is tackled on three levels: Transfer of practical knowledge The tactical choice on the optimum technique Determination of the strategic value of the technology It illustrates what needs to be done to ensure a...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, February 19–21, 2003
Paper Number: SPE-79840-MS
... describes the development and application of the specialized micro-bubbles-based drilling fluid for controlling downhole mud loss in a depleted reservoir in the North Sea. The key issues of this project were excessive overbalance drilling conditions (> 5,000 psi) leading to the risk of highly expensive...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 26–28, 2002
Paper Number: SPE-74509-MS
... Abstract A North Sea coring record was set by Conoco UK Ltd (CUKL) and service provider Baker Hughes INTEQ (BHI) on 20 January 2001. A 179-ft core was cut and recovered in 6" hole from the Rotliegendes formation in the Southern North Sea. In-depth operational planning, which included offset...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, February 23–25, 2000
Paper Number: SPE-59169-MS
... Abstract This paper presents the cementing case histories of six wells in two offshore high-pressure, high-temperature (HPHT) fields in the Central Graben area of the North Sea. Well depths averaged 6000 m true vertical depth (TVD), temperatures were greater than 200°C, the fracture/pore...

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