Design and research of fishing tools with rational parameters of magnetic systems

Management Systems in Production Engineering

Bembenek

et al. 2020

Self Cite

AbstractA variety of magnetic fishing tools poses the task of the optimal choice of tool for eliminating accidents during the construction, operation and repair of wells. Existing criteria for assessing the quality of fishing magnets are characterized by the complexity of the determination and the ambiguity of the results. Therefore, the aim of research is development of a new approach to determining the technical level of fishing tools of various types and designs. A complex criterion has been developed that allows to evaluate the technical level of magnetic systems by correlating the actual and theoretical values of the total and specific lifting forces. Also it has been carried out a qualimetric analysis of magnetic tools, which are currently offered by world manufacturers. As a result, mathematical models are found that describe the average and modern world level of devices with specific lifting force. Technical decisions are proposed, the implementation of which in the design of magnetic systems of fishing tools will allow to achieve high values of lifting force. Application of the proposed complex criterion along with the results of qualimetric analysis will make it possible to objectively assess the technical level of magnetic fishing tools both at the design stage and during serial production.

Section: Discussionmentioning

confidence: 99%

Section: Fig 1 the Dependence Of The Specific Lifting Force Of Magnetic Fishing Tools On The Outer Diametermentioning

confidence: 99%

Assessment of the Technical Level of Magnetic Fishing Tools

Management Systems in Production Engineering

Bembenek

et al. 2020

Self Cite

New Trends in Production Engineering

“…In the case of machines using this technique, inter alia, by Aker Wirth and Atlas Copco, this method showed full usefulness (Kotwica, 2019). There were also concepts of another tools developed, so called fishing tools with magnetic systems (Romanyshyn et al, 2017), but there can be used mainly for drilling. The benefits of hard rock mining using disk tools were the reason to develop new solutions of mining tools and rock mining techniques in AGH University of Science and Technology in Krakow.…”

Section: Fig 1 View Of Smooth Disk and Disk Armed With Carbide Insermentioning

confidence: 99%

Asymmetrical mini disk tools – possibilities of use and directions for further development

Kotwica

2019

The paper presents a new solution of asymmetrical mini disk tools for mining head of roadheader designed for hard and very hard rock mining. In the first part the benefits of disk tools used in TBM's and special tunneling machines were presented. Next part presents the results of works and laboratory tests performed for developing of new solution of asymmetrical mini disk tools. On the basis of these results new mining head equipped with mini disk tools with a complex trajectory was designed. The results of field tests with different constructional and material solutions of asymmetrical mini disk tools were presented. The directions for further development were described.

“…Nowadays, the highest magnetic properties have rare-earth neodymium magnets (Gutfleisch, 2000), so neodymium permanent magnets of the chemical composition of Nd2Fe14B are used in magnetic systems. Rational geometric relations of magnetic elements systems with a diameter of 72 mm are determined by the method (Romanyshyn, Dzhus and Romanyshyn, 2017). Diamagnetic covers are fastened to non-working surfaces of magnetic systems, preventing the scattering of the magnetic flux.…”

Section: The Development Of Design Of Fishing Tool With Mobile Magnetmentioning

confidence: 99%

Study of the efficiency of the large-diameter fishing tools with the moving magnetic systems

Sheketa

New Trends in Production Engineering

et al. 2019

Self Cite

The variety of accidents which happen during the construction of oil and gas wells causes the expansion in the use of magnetic fishing tools. However, the known tools based on permanent magnets have a significant drawback involving the flat working surface of the magnetic system that does not permit to achieve a considerable attraction force to a fished object of complex geometric shape. Therefore, the aim of the research is to increase the efficiency of removalthe objects of irregular geometric shape from the wells by enlarging the area of contacting them. For that purpose, it has been developed a fundamentally new design of the large-diameter fishing tool with the moving magnetic systems capable of copying the shape of the objects to be fished. Each magnetic system, which is compound of permanent rare-earth neodymium magnets and concentrically placed magnetic cores, shall be held by the magnetic field of adjacent systems with opposite polarity. There were conducted theoretical studies using the finite element method to determine the working capacity of the designed tool. As a result, it has been found the valueof hoisting capacity during the interaction of magnetic systems with the roller cone of the drill bit; this fact confirms the capability of fishing the objects of irregular geometric shape. In addition, it has been explored the influence of the material of the fished object on the power characteristics of magnetic systems. The application of the designed magnetic tool allowsremoving the ferromagnetic objects from the well regardless of their shape, weight and position onthe bottom hole. Apart from that, the given tool may be used in the areas where the technology of work is related to drilling wells.