This article presents a method enabling the determination of the minimum radius of pipe bending in which it is possible to move freely a cylinder with defined dimensions. A respective mathematical model has been presented. The below-described method can be useful in the future, while designing mechatronic tools for working in lateral bores starting from a vertical bore, and also while designing inspection robots moving in pipes and pipelines.
(2014) Zwierzyński, Adam Jan; Wróblewski, Tomasz; Wiśniowski, Rafał; Stryczek, Stanisław
Methods of measuring settling ratę of drilling muds have been selected and the basic theoretical data on this process are addressed in the paper. A brief discussion is also given on the negative influence of settling in drilling mud on the stability of wellbore and formation of potential drilling complications. The results of an analyses of the settling processes taking place in oil-based muds madę according to 8 recipes are presented. The direct weighing method has been used in the measurements.
The article presents an economic model enabling the assessment of the profitability of lithium extraction using the direct lithium extraction (DLE) method from geothermal brines from a single well. The model enables a preliminary simplified assessment of the profitability of DLE projects, which can be helpful in selecting the optimal locations for such projects and drilling production wells. The article also presents the critical role of lithium as a raw material for the decarbonization of the world economy, methods of its extraction and the economic prospects of the market for this raw material. It also presents exemplary DLE projects in the world.
