JZ 19-1-1 was completed around 22 March 2020 without result reported.   CNOOC â Tianjin spudded a new-field wildcat (NFW), JZ 19-1-1, in Bohai offshore, Bohai Gulf Basin on 18 February 2020. The well is located in Jinzhou 09 block in the west Liaodong Bay in a water depth of approximately 26 m. It is assumed to be targeting the Archean basement granite and Lower Tertiary clastic play based on reservoirs revealed in the adjacent fields. âZhongyouhai 6â J/U is used for the drilling operation.  Background Information  There are two fields nearby on production in the east and northeast of the well.   Jinzhou 25-1S, discovered in August 2002 with main reservoir in the Archean Series and second reservoir in the Oli-Eocene Shahejie 2 Member. It was brought onstream in December 2009 and producing 32 Mb/d of oil, about 69 MMcf/d of gas and about 639 b/d of condensate in 2018.   Jinzhou 25-1, discovered in July 1985, but without commercial value until 2007 when CNOOC came back to drill JZ 25-1-2 and 3 wells after further studies on the discoveries made in the adjacent structures. Oil and gas mainly accumulated in the Eocene Shahejie 3 Member, secondly in the Oli-Eocene Shahejie 2 Member and thirdly in the Jurassic Series. The field was brought onstream in March 2011. The production was still ramping up in 2018 with oil production at a rate of over 19 Mb/d, gas production at a rate of 12 MMcf/d and condensate at a rate of 107 b/d.  Latest discovery made in the area is Jingzhou 25-1W-1 in 2016, located in the north of the well, with no further exploration activity since. Several wells drilled in the surrounding area in the last few years are not satisfied:   In 2013, SZ 30-2-1 completed as a dry hole.   In 2004, JZ 31-2E-1 completed as a dry hole.  In 1988, JZ 25-2-1 completed with oil show.  In 1988, SZ 30-3-1 completed as a dry hole.  In 1986, JZ 19-2-1 completed as a dry hole.  Liaodong Bay is part of Bohai offshore, next to Liaohe Depression onshore in the north and Bozhong Depression offshore in the south. CNOOC has more than 10 fields on production in this area, including the second largest field in Bohai offshore - Suizhong 36-1. The existing fields have main reservoirs in the Tertiary sandstones with a few ones in the pre-Tertiary Basement.
JZ 19-1-1 was completed around 22 March 2020 without result reported. CNOOC â Tianjin spudded a new-field wildcat (NFW), JZ 19-1-1, in Bohai offshore, Bohai Gulf Basin