Cseh Valentin szerk.: „70 éve alakult a MAORT” – tanulmányok egy bányavállalat történetéből (2009)
László Paczuk: EUROGASCO and MAORT's Production Methods
engines drove the drilling rigs' machinery independently or connected. They implemented the power train in a considerably more complex manner than did steam-engines —with intermediate shafts, e.g. HILL crossed couplings, turn mechanisms. The number of the drawworks' gears had to be increased from 4 to 8 as a consequence of the diesel engine's inflexible operation ratio. The necessity of manufacturing steam-engines and pumps in Hungary for replacement purposes already arose in the last years of the war, as well as in the subsecjuent period. The steam-engines of the Láng Engine Works in Budapest were produced on the basis of the Ideal Ajax steam-engine. Their use, however, was accompanied by serial defects and breakdowns. Drilling mud pumps The WILSON SNYDER made, Worthington system duplex steam pumps of steam operated drilling rigs satisfied every need of drilling mud flushing technology, with their replaceable cylinder liners, as well as the possibility to regulate steam pressure and loading. The drilling mud pumps being identical in type was a requirement of decisive significance from the aspect of continuous component supply. The magnitude of 7 3/4x16 inch WILSON pumps can be ranked among the greatest hydraulic output steam pumps to this very day. The Láng Engine Works produced the first higher output Hungarian pump on the basis of one of their smaller series, which, however, proved to be the cause of numerous breakdowns. The German mud pumps of drilling rigs were HANIEL LUEG made counterdriven units. This more complex drive train just went to increase the number of defect sources. Their performance was significantly lower, since diesel operated drilling rigs were only supplemented with no more than two 200-250 hp output engines. Well repair equipment MAORT favoured the separation of well completion from boring the holes. The twin drum, internal combustion, compound layout Cardwell units that were imported in 1938 were suitable for cement drilling and redrilling as well. A telescoping tube boom served the purposes of come out and swabbing work. They were powered using petrol or natural gas engines, with approximately 130 hp output. During the war years, 2 more German manufactured, WUELFEL well workover rigs were put into operadon. The sand reel drums produced by the Mazalán drilling rig factory also deserve to be mentioned among auxiliary equipment; these were low performance units that were highly mobile, being mounted on Büssing lorries, masts were manufacaired by DAG. ]Mmr-out preventers The safety system -master valve and Hosmer system blow-out preventer - used in 1935, in the heydays of rotary drilling in Hungary, was replaced for the first dme in Europe by Cameron made, hydraulicallv operated blow-out preventers as early as 1938. During the war years, Wirth made (160 bar pressure) 10" internal diameter gauge, mechanical blow-out preventers were used. One 12" and one 10" nominal diameter, Cameron made, 210 working pressure, ORC mark
