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Topology and dynamic characteristics advancements of liner casing attachments for horizontal wells completion
Abstract
Construction of extended-reach wells is accompanied by significant capital expenditure and risks at all stages of construction. Lots of drilling problems and accidents arise during drilling and completing of such wells. When a filter is running into a well, the most common problems are slacking off and its inability to reach the projected depth. These problems may be related to the uncontrollable geomechanical processes in the hole, which are caused by the deformation of rocks (Dvoynikov, 2017). Liner design includes a filter that is installed directly in the productive interval zone (Hossain & Abdulaziz, 2015). To reduce the risk of such accidents, the liner can be connected to rigid power sub or to a swivel. The liner swivel rotates together with the stationary part including the filter. The operational characteristics and the total life of the well are decreased when the liner’s structural integrity is destroyed.
Supplementary resources (2)
... In most cases, pipe failures in the oil and gas industry occur due to internal corrosion [1]. With traditional oil and gas reserves depleting, the production of hard-to-recover oil is increasing, leading to the utilization of new methods [2][3][4][5][6][7]. This development leads to the exploitation of materials in extreme conditions [8][9][10][11][12], resulting in premature equipment failure [13][14][15][16][17][18] when operating in aggressive environments containing chlorine ions (Cl − ), carbon dioxide (CO 2 ), and hydrogen sulfide (H 2 S). ...
Super 13Cr steels, which combine high strength and excellent corrosion resistance, are the optimal choice for developing and exploiting complex oil and gas wells, particularly in high-CO2 environments. In this study, we conducted a corrosion assessment of several high-strength steels of the 13Cr type with different alloying systems. We identified the primary parameters responsible for the corrosion resistance of these steels based on our research findings and suggested ways to optimize their chemical composition and select the most economically viable option. We demonstrate the importance of selecting the appropriate alloying system and the impact of non-metallic inclusions (NMIs) on the corrosion properties of the high strength 13Cr material.
... For the period 2007-2012, the IMO also estimated the average annual SOx emissions to be 11.3 million tons of shipping, representing 13% of global SOx emissions [17]. In port cities, ship sulfur oxide emissions are often the main source of pollution [18][19][20]. Moreover, SOx emissions from ships spread to the atmosphere over several hundred kilometers and contribute to the degradation of air quality on land, even if they are released into the sea [21]. ...
Providing quality fuel to ships with reduced SOx content is a priority task. Marine residual fuels are one of the main sources of atmospheric pollution during the operation of ships and sea tankers. Hence, the International Maritime Organization (IMO) has established strict regulations for the sulfur content of marine fuels. One of the possible technological solutions allowing for adherence to the sulfur content limits is use of mixed fuels. However, it carries with it risks of ingredient incompatibilities. This article explores a new approach to the study of active sedimentation of residual and mixed fuels. An assessment of the sedimentation process during mixing, storage, and transportation of marine fuels is made based on estimation three-dimensional diagrams developed by the authors. In an effort to find the optimal solution, studies have been carried out to determine the influence of marine residual fuel compositions on sediment formation via machine learning algorithms. Thus, a model which can be used to predict incompatibilities in fuel compositions as well as sedimentation processes is proposed. The model can be used to determine the sediment content of mixed marine residual fuels with the desired sulfur concentration.
Numerous studies have shown that corrosion of the casing outer side is one of the factors that has a negative impact on the accident rate of the casing string and is the reason of loss of tightness and various failures and complications in the well. The article describes a method of electric resistance welding of dissimilar steel bonding, which allows to increase the corrosion resistance of casing strings in elevator sections with an increased exterior aggressiveness. The developed technology solutions for welding conditions are presented. Metallographic studies of welded joints and recommendations for technological welding conditions are given.
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