Reservoir Evaluation and Development ›› 2020, Vol. 10 ›› Issue (5): 108-113.doi: 10.13809/j.cnki.cn32-1825/te.2020.05.016

• Comprehensive Research • Previous Articles     Next Articles

Research on fracturing layer combination method based on mutation series method

ZHANG Shanyi(),LAN Jinyu   

  1. N0.5 Oil Production Plant, PetroChina Daqing Oilfield Company, Daqing, Heilongjiang 163513, China
  • Received:2019-05-01 Online:2020-10-26 Published:2020-09-24

Abstract:

In the late stage of extra-high water cut, the difference of fracturing layers becomes smaller and smaller, the geological factors taken into account increase gradually, and the combination of fracturing layers becomes more and more difficult, so that, the parameters, such as reservoir, physical property, oil content and production capacity, which can reflect reservoir characteristics are optimized. By using the mutation progression method, the multiple parameters of each small layer are reduced to one comprehensive evaluation value. Through this evaluation value, the quantitative combination of fractured strata is carried out, which solves the problem that some sand bodies in the fractured strata can not be fractured due to the unreasonable combination of fractured strata in the late stage of high water cut, and realizes the efficient and intelligent combination of fractured strata. By this method, the stratified combination of 25 fractured wells in the study area is completed, and the average daily oil increase is 0.5 t more than that of a single well in the same period, achieving a better effect. It is a good reference for the quantitative combination of fractured layers.

Key words: mutation progression method, interval combination, fracturing, reservoir parameters, physical parameters, oily parameters

CLC Number: 

  • TE312