Lithologic Reservoirs ›› 2016, Vol. 28 ›› Issue (4): 111-120.doi: 10.3969/j.issn.1673-8926.2016.04.016

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Adjustment measures of remaining oil tapping based on sand body structure

Hu Hao   

  1. (No. 7 Oil Production Plant,PetroChina Daqing Oilfield Company Ltd.,Daqing 163000,Heilongjiang,China)
  • Online:2016-07-20 Published:2016-07-20

Abstract:

The development of Xing 6 block of Daqing Oilfield has entered the later stage with high water cut. The distribution of remaining oil in reservoir is complex, so analyzing the remaining oil distribution by making sublayer as the research object can not meet the needs of the remaining oil research in the later stage. Therefore, the paper refined the internal sand body structure in Xing 6 block, summed up five typical characteristics of sand body structure, discussed the relationships of the sand body structure with the formation and distribution of remaining oil, and proposed corresponding strategies for tapping the potential remaining oil, namely reshooting and water plugging adjustment plan.The plan designs 57 reshooting wells, 6 water plugging wells. It is estimated that the average daily oil production of single well increases by 2.9 t, and comprehensive water cut decreases by 6% after the implementation of the plan. This plan has some guidance for tapping the potential remaining oil in maturing oilfield in the late stage of high water cut development.

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