On 25 June 2019 Wintershall Dea spudded an exploration well using the âMaersk Resolveâ J/U. Q4-11 shares a top-hole location with Q4-C1, Q4-C2 and Q4-C3 which are producers for the Q1-B field, all drilled from the Q4-C platform. As Q4-11 is classified as an exploration well it is assumed that it was deviated to a separate target. On 24 August 2019 operations were completed and the well was reported to have encountered gas shows, no further information was released.  Q1-B was discovered in 2001 by exploration well Q4-10. The well proved gas and some condensate in the Triassic Bunter Formation. The following year appraisal well Q1-25 was drilled approximately 4 km to the northwest and confirmed the same gas gradient as Q4-10 and encountered the GWC at 2,539 m. The reservoir consists of a 200 m thick package of sands and claystones in a NW-SE trending structure. The Q4-C A platform was installed, Q4-10 was converted to producer Q4-C1 and two further producers were drilled. The field came onstream in October 2003 and is expected to last for 20 years. Gas is exported through a 16â pipeline to the Hoorn processing platform 15 km to the northwest and from there it enters the WGT pipeline for onwards export to Den Helder. Recoverable reserves are estimated to be around 40 Bcfg.  Wintershall Dea, through Wintershall Noordzee BV, operates Q4 with a 29.85% interest. Energie Beheer Nederland BV participates with a 40% interest and remaining equity is divided between Delta Hydrocarbons BV (19.8%) and RockRose (NL) CS1 BV.
Q4-11 exploration - Operations complete, gas shows