CNOOC announced a large-sized oil field discovery has been made in Bohai Gulf Basin. KL 6-1 field is located in the Laibei low uplift of north Laizhou Bay Sag of Bohai offshore, in a water depth of 20 m. The discovery well, KL 6-1-3, was drilled on a Miocene stratigraphic trap and completed with a TD of 1,596 m in May 2019, it is reported the well was tested to produce at an average rate of 1,178 b/d of oil from the Miocene sandstones. During drilling the well penetrated 20 m.   Following the discovery well, CNOOC has drilled several appraisal wells in 2019 with success.   Around KL 6-1 area, CNOOC has made several discoveries with reservoir in the Tertiary clastics over the past few years, but they are small-sized and pending for appraisal:  In 2019 KL 10-1N-3d completed and reported as an oil discovery well.  In 2018, the company made an oil discovery in KL 5-1-1D.  In 2017, the company made discoveries in Kenli 3-2S-1, Kenli 6-5-1 and Kenli 4-1-1d.   In 2010, CNOOC made an oil discovery in KL 6-4-1. The well penetrated 213 m oil pay during drilling operations and reported to be a breakthrough with a medium sized discovery in this area.   Background Information  The Laizhou Bay Sag lies in the southern part of the Bohai offshore in the Bohai Gulf Basin and covers 1,200 sq km. Like other geological units in the basin, Laizhou Bay Sag is mainly a Tertiary sediment depocenter with a maximum thickness up to 7,000m. To the north of the Laizhou Bay Sag it is Huanghekou Sag in the Bohai offshore where BZ 34 fields complex is, to the south it is the Jiyang Depression onshore where extensive exploration work has been done and many fields are found. With more discoveries made, it represents a further potential in the Laizhou Bay area, the main risks are oil and gas generation volume in such a small sag and effectiveness of the traps.
China (Jiyang Depression (Bohai Gulf B.)) Kenli 6-5 (Bo) 1