... accuracy to date is achieved by combing two wellbore positions of the same wellbore trajectory. The first wellbore position is calculated using the latest technology of magnetic Measurement-While-Drilling (MWD) Definitive Dynamic Surveys (DDS). The accuracy of the MWD DDS has been enhanced by correcting...

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... Abstract Wellbore trajectories are a fundamental piece of data used for decisions throughout the oilfield. Trajectories are typically mapped through measurement-while-drilling (MWD) survey stations collected at 95ft intervals. Previous work suggests that this sparse sampling interval masks...

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... this by using a two-fold approach: an enhanced bottom-hole assembly (BHA) start-up procedure and secondly, a modified algorithm on the mud-pulse telemetry (MPT) uplink decoding software. The enhanced measurement-while-drilling (MWD) BHA start-up procedure focuses on various process steps during the flow-off...

...) by upwards of 40% when compared to the MWD tool code standard. A study was conducted on a typical well and pad design for three-mile laterals in the Marcellus Shale in Pennsylvania. We find that the horizontal uncertainty with the MWD tool code at two and three miles of reach to be 206 feet and 303 feet...

... Abstract Despite advances in Measurement-While-Drilling / Logging-While-Drilling (MWD/LWD) technologies, the oil & gas industry has until recently lacked viable technologies and tools to measure wellbore geometry in large hole sizes (>12-1/4″) while drilling and subsequently the ability...

... while drilling (MWD). The methodology resulted in a reduction of 74.55% (Well_A), 50.93% (Well_B), 33.69% (Well_C), and 60.05% (Well_D) of the ellipse of uncertainty at the top of the reservoir. The use of the Definitive Survey Methodology enhances the quality of the directional data, verifying...

... Drilling Dynamics Four different tools were employed for monitoring the dynamics in the downhole environment. These tools are described in Table 1 . Table 1 Tools used for BHA dynamics characterisation. Drilling Dynamics Recorder Rotary Steerable System (RSS) Conventional MWD...

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... is the development of the vibration health monitoring tool that tracks and filters out recent drilling parameters responsible for high vibration and monitors the overall BHA health. Measurement While Drilling (MWD) or Rotary Steerable (RSS) providers often provide vibration data but are rarely used in real-time...

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... well drilled and completed from a floating rig. Well planning software existing today does not offer this functionality. mwd drilling fluid chemistry well control drilling measurement knowledge management drilling data acquisition drilling fluids and materials completion installation...

... Abstract It has been well documented that magnetic models and Measurement-while-Drilling (MWD) directional sensors are not free from error. It is for this reason that directional surveys are accompanied by an error model that is used to generate an ellipse of uncertainty (EOU). The directional...

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... the early days of oil and gas extraction in the last century, and it is many years since a wellbore has been constructed without the use of magnetic MWD measurements. The exercise described here therefore marks a milestone in the application of downhole gyroscopic technology. The wellbore development...

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... Optimizing a weighted objective function into recommend best-case operational parameters. In collaboration with a North Sea operator, a downhole measurement-while-drilling (MWD) system was used in multiple wells during casing exit jobs to collect a rich data set of downhole measurements. Through...

..., and the resultant algorithms and calculations derived from this to affect subsequent jobs and to improve decision-making and therefore the safety and efficiency of these critical cement jobs. drilling data acquisition real time system MWD drilling fluids and materials casing and cementing pressure...

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