Citation: | GUO Songyi, WANG Zhiming, ZENG Quanshu. An Ordered Clustering Based Segmentation Method for Water Control Completion with AICD in Horizontal Wells[J]. Petroleum Drilling Techniques, 2020, 48(2): 70-75. DOI: 10.11911/syztjs.2020013 |
Currently, the application of segregated completion technology in horizontal wells mainly relies on field experience, and an ideal segregated method has not yet been developed, which limits the application of water controls in completion. To extend the water-free production period and increase the cumulative oil production, a segregated completion method which involved water control in horizontal wells has been propose. This method is based on ordered clustering and combination with the distribution of inflow profile in horizontal wells. By means of an analysis using simulations, it is found that for a heterogeneous bottom-water reservoir with an assumed flow rate of 2000 m3/d in the horizontal wells that water free production period can be extended by 0.86 days, 1.76 days less compared with AICD completion programs. This calculation was based on uniform segregated method and the segregated method from logging permeability. After implementing the changes, the cumulative oil production increased by 0.20×104 m3 and 0.11×104 m3, respectively. Compared with perforation completion, the water free production period extended by 17.88 days and cumulative oil production increased by 4.48×104 m3. The field test results of a bottom water reservoir in the Bohai Oilfield show that the segregated method can effectively solve the problem of water coning in horizontal wells and improve cumulative oil production. This method further enriches the segmentation theory of water control completion in horizontal wells, and provides theoretical support in the application of water control completion using AICD in horizontal wells.
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