Azt hiszem, a mondat fordítása kb. így hangzik: Használjanak mechanikus emelő szerkezetet az eltávolítandó vas kiemelésére, stb.

Itt oldószert használnak:....typical well characterized by the presence of downhole iron will contain a dissolved iron concentration of 50-100 ppm, however, as the age of an oil field increases incidences of iron-containing deposits, like rust, on pipe casings and other downhole equipment also tends to increase. During treatment, the scale inhibiting solution comes into contact with these pipe casings and pieces of equipment, thereby dissolving some of the built-up, iron-containing deposits. The dissolution of iron may become so great that by the time the scale inhibiting solution reaches the well bottom, the solution is already saturated with iron and unable to sequester the downhole iron.
There is accordingly a real and unsatisfied need in the art for an improved composition making use of an inexpensive ferrocyanide for brine control during drilling and well operations, while at the same time having the capacity to continue to sequester downhole iron even though being injected through aging well equipment containing built up iron deposits.
www.patentstorm.us/patents/6720291-description.html
Használnak vasércet (barit helyett) "as a weighting agent in oil- and gas-well-drilling fluids", amely hozzájárulhat a problémához.

A kérdéses mondat mechanikus megoldást kíván.

Artificial/mechanical lift equipment: equipment installed on, or in a well, to remove fluids from a well when it is not able to produce these fluids with its own energy.