Survey Management Resources
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Enhanced Wellbore Placement Accuracy Using Geomagnetic In-Field Referencing and Multi-Station Correction
Abstract Reduced lateral spacing in congested oil and gas fields requires advanced techniques to prevent collisions while drilling. Anti-collision separation factors depend on the accuracy…
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Fifty Ways to Leave Your Wellbore: An Honest Look at the Causes and Costs of Unplanned Sidetracks
Abstract Unplanned sidetracks are low-frequency high-cost events that have meaningful negative impact on the economics of oil field development. While it is clearly desirable to…
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Improving Directional Survey Accuracy through Real-Time Operating Centers
Abstract Standard directional surveying practices are subject to numerous error sources which can cause inaccurate placement of the wellbore. This is problematic because inaccurate wellbore…
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Improving Wellbore Placement Accuracy Using Stratigraphic Misfit Heatmaps
Abstract Accurate wellbore placement is of key importance in producing and developing unconventional resources. For cost reasons, unconventional wells areusually drilled with gamma radiation data…
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Modelling the Economic Impact of Spacing Uncertainty in Unconventional Long Laterals Due to Common Survey Practices
Abstract Finding an optimal lateral spacing is crucial to maximizing the return on investment for unconventional assets. The estimates regarding these lateral spacings were made…
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Optimizing Lateral Well Spacing by Improving Directional Survey Accuracy
Abstract Optimizing lateral well spacing is a challenging problem that has significant economic consequences. The intent is to drill the fewest number of horizontal wells…
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Optimizing Wellbore Trajectories for Closed Loop Geothermal Operations
Closed-loop geothermal presents a unique opportunity, with relatively few constraints to satisfy (e.g. target depth, lateral length). This study uses this freedom in trajectory design…
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Real-Time Directional Survey Quality Improvement Using Web-Based Technologies
Abstract Optimal wellbore placement and collision avoidance requires accurate real-time steering of directional wells. Uncertainties in the wellbore position are accounted for by industry standard…
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Simulation of Recovery Losses Due to Positional Errors in Wellbore Placement
Abstract In unconventional resources, horizontal wells are drilled in parallel at a spacing distance designed to maximize drainage of the reservoir. Lateral well spacing should…
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Using Autonomous Marine Vehicles to Enable Accurate Wellbore Placement in the Arctic
Abstract This paper describes a study using an autonomous marine vehicle with satellite communications, to accurately collect and deliver in real-time magnetic measurements, to calculate…
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Using Hybrid Propulsion Autonomous Marine Vehicles to Better Characterize Geomagnetic Fields Offshore
Abstract We present a study conducted to develop and validate new capabilities for offshore geomagnetic surveying that employs the autonomous marine vehicle (AMV) to map…
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Validation of Directional Survey Data Against Positional Uncertainty Models
Abstract Positional uncertainty is a critical component of managing collision risk while drilling. Ensuring that survey data meet the requirements of their uncertainty models has…