Petroleum Geology and Recovery Efficiency. 2014, (03) Core

Physical simulation of square inverted nine-spot pattern infilling and adjustment for low permeability reservoirs in western Wangyao oilfieldChinese Full Text

Shen Rui;Li Zhaoguo;Duan Baojiang;Institute of Porous Flow and Fluid Mechanics, Research Institute of Petroleum Exploration and Development, Langfang, Petro China;

Abstract: The square inverted nine-spot pattern is widely used in Wangyao low permeability oilfield, and the infilling pilot is carriedout in the west part. In order to evaluate the EOR potential of pattern infilling program, the infilling inverted nine-spot pattern physicalsimulation program is designed. Considering the geological features of pilot area, the natural sandstone outcrops are selected, whichhave the similar porosity, permeability, oil displacement efficiency and throat radius for the waterflooding experiment. According to theactual timing and manner of infilling adjustment of the pilot area, we simulate the infilling injection during the experiment to study theimpact of infilling adjustment on development performance. Results show that, after infilling adjustment, the EOR is increased by about4.94%. If the infilling timing is postponed for five years, the EOR might reduce by 1.2%. Therefore, the infilling adjustment should beimplementedassoon aspossible in the pilot area.

Keywords：

lowpermeability reservoirs; square inverted nine-spot pattern; well patterninfilling; physical simulation; waterflooding;

DOI：
10.13673/j.cnki.cn37-1359/te.2014.03.024
Series：
Subject：
Classification Code：
TE348

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Physical simulation of square inverted nine-spot pattern infilling and adjustment for low permeability reservoirs in western Wangyao oilfieldChinese Full Text

Shen Rui;Li Zhaoguo;Duan Baojiang;Institute of Porous Flow and Fluid Mechanics, Research Institute of Petroleum Exploration and Development, Langfang, Petro China;

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