Drilling rig on the Banska PGP-4 web site in Szaflary, Poland (supply: Rafal Szkaradzinski:)
Drilling has resumed for the 7-kilometer geothermal effectively in Szaflary, Poland after work needed to be paused on account of gradual penetration and wellbore integrity points.
Drilling of the deepest geothermal effectively in Poland has simply resumed after work was paused for about two months on account of points associated to a gradual drilling fee and collapse of the wellbore. A sequence of consultations with specialists from the drilling trade resulted in some adjustments to the drilling gear and process. The plan is now to proceed to drill to the goal depth of seven kilometers.
First introduced again in 2019, the Banska PGP-4 effectively in Szaflary goals to be the deepest geothermal effectively in Poland with a goal 7-kilometer depth. The targets of the mission included the gathering of knowledge on the subsurface geology of the Podhalanska Basin (or Podhale Basin), in addition to faucet right into a geothermal useful resource with temperatures exceeding 120 °C.
Earlier this yr, the mission had introduced reaching the 5-kilometer depth mark. The outcomes at the moment have been optimistic with two feed zones encountered to date – one at 85 °C at about 3ooo meters, and one other at 120 °C at 5000 meters. The expectation stays {that a} third aquifer will likely be accessed at 7000 meters with a temperature of 150 °C.
Work needed to be stopped at a depth of round 5900 meters as a result of the speed of penetration had turn out to be very gradual. Within the final two weeks earlier than work stoppage, solely 5 meters had been drilled. The mission had beforehand been drilling at a fee of 40 to 50 meters per day. The partitions of the effectively had additionally begun to crumble.
After cementing the collapsed part, additional drilling started utilizing a brand new drill and a modified drilling mud. Engineers are hoping that the the elevated strain on the formation will permit drilling to the goal depth. It isn’t recognized at this level when drilling will likely be accomplished, because the preliminary plan focused a completion date of March or April 2024.
Geothermal power from the effectively is meant for use for networked heating within the commune of Szaflary and town of Nowy Targ. Roughly 10 kilometers of pipeline should be laid down to attach the effectively in Szaflary to the power of Miejskie Przedsiebiorstwo Energetyki Cieplej (MPEC) and to the residential areas of Nowy Targ.
Supply: Zakopane Wyborcza and Bankier
