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| A STUDY OF VECTOR WELL PATTERN OF THIN INTERBEDDED SANDTONE OIL RESERVOIR |
| SUN Zhi-xue1, DING Sheng-jun2, ZHANG Wen-zhe3 |
1. College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China;
2. Baikouquan Oil Production Plant, Xinjiang Oil Field Company, PetroChina, Karamay 834000, China;
3. Well Test Department, Western Drilling Engineering Company, Karamay 834000, China |
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Abstract Thin interbedded sandstone reservoir has such characteristics as great thickness,small monolayer control reserves and strong heterogeneity.If the conventional areal well pattern is used,the reservoir will have a poor overall development effect characterized by low reserves control degree,serious contradiction between layers,low recovery rate and poor economic feasibility.According to the sedimentologic features of the oil-bearing sand body,the method of vector well pattern placement in single sand body scale is established based on porous media seepage theory,and a well spacing design formula of vector well pattern for single sand body with areal heterogeneity is provided.On the basis of physical model developed by the provided well spacing design formula, the water/oil displacement experiment on planar models is launched.With the application of reservoir scale vector well pattern placement by reservoir numerical simulation,a specific development strategy of series of strata assemblage and well placement for superimposed area and non superimposed area of interbedded sandstone reservoir is established.
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Received: 05 December 2012
Published: 10 October 2013
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