河口探区核销探井再评价

Reappraisal of the cancelled exploration wells after verification in Hekou exploration area

通过对河口探区内370口已经核销的老探井进行重新评价,认为受地质认识和采油工艺局限性的影响有21口已经核销的老探井初次试油不彻底。随着地质认识的不断完善和采油工艺的不断改进,对其中的17口井进行了重新试油均获得成功,产油量由8.94t/d增加到73.9t/d,新增探明石油地质储量6063×104t。实施核销探井再评价,不仅深化了地质认识,盘活了闲置资产,缩短了增储周期,降低了勘探成本,而且通过出油井点的突破,找到了一条高勘探成熟地区油气勘探的路子。

After 370 discarded old exploration wells are reappraised in Hekou exploration area,conclusion is obtained that the early formation test is not quite complete in 21 wells of them because of lim-ition in geology knowledge and petroleum engineering technology.With the continuous improvement on the geology knowledge and advance in petroleum engineering technology,second testing for oil is successfully performed in 17 wells.The oil production rate increases from 8.94t/d to 73.9t/d.The proven OOIP is increased by 6 063 ×104t.Reappraisal of the cancelled exploration wells can not only help to deeply comprehend geology condition,to effectively utilize unused asset,to shorten cycle of increasing reserves,and to decrease exploration cost,but also find out a new way of exploration for some mature exploration area by the breakthrough in the position of producing wells.