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取心大陆公司1988年9月在北海49/16-P04井一次连续取芯141.42m,收获率100%。一个月以后,该公司在北海南部的49/21-T05/05井用215.9mm钻头在砂岩地层一次连续取芯140.8m,收获率100%,岩心直径111.12mm。
Coring Continental in September 1988 in the Beihai 49/16-P04 a continuous core of 141.42m, the harvest rate of 100%. A month later, the company used a 215.9mm drill bit to drill a continuous 140.4m of sandstone in the 49/21-T05 / 05 well south of the North Sea with a yield of 100% and a core diameter of 111.12mm.