Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Lost Circulation"”.
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Intelligent data-driven decision-making to mitigate or stop lost circulation
<p>”Lost circulation is a challenging problem in the oil and gas industry. Each year, millions of dollars are spent to mitigate or stop this problem. The aim of this work is to utilize machine learning and other intelligent solutions to help to make better decision to mitigate or stop lost …
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The effect of testing conditions on lost circulation materials' performance in simulated fractures
<p>"Lost circulation (LOC) problems increase costs of drilling significantly. It is not only the cost of the drilling fluid that is lost into the formation but also the costs of subsequent problems that can be higher than the cost of the drilling fluids. LOC also possibly leads to a serious risk of …
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Multivariate Time-Series Deep Learning for Short-Term Forecasting of Lost Circulation in Drilling Operations
Lost circulation is a frequent and costly problem in drilling operations, often leading to non-productive time, operational delays, and increased risk. Accurate prediction of lost circulation is challenging due to the complex, time-dependent interactions among drilling parameters, formation …
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Effects of filtration process variables on filter cake properties and formation
… of the rock possible. For this reason, lost circulation, the loss of drilling mud through fractures in the formation, represents a serious issue in the oil and gas industry, since it increases the costs of the drilling process. Since fluid losses usually occur through induced fractures, …
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Evaluation of recrosslinkable preformed particle gel (RPPG) as a fluid loss control material during drilling operations
… during drilling operations is the loss of circulation, which could result in several consequences, including wellbore collapse, fluid inflow, formation damage, environmental issues, and nonproductive time. This research aims to evaluate novel materials that can mitigate lost circulation and …
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Thermal modeling for calculation of formation temperatures for deep water wells with chemical heat source
… brings around the challenges including severe lost circulation and poor zonal isolation. Artificially strengthening the wellbore is of crucial importance in order to achieve successful drilling as well as cementing for deep water wells. Altering the thermal stresses results in increased …
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Experimental and Analytical Investigation of Particle Dynamics in Newtonian and non-Newtonian Fluids in a Taylor-Couette Cell
… can lead to operational issues such as lost circulation, well control problems, and even blowouts. To simulate DF dynamics under operational conditions, this study utilizes a Taylor-Couette (TC) cell, which consists of a rotating inner cylinder and a stationary outer cylinder separated …