The Influence of Sedimentary Microfacies Distribution on Fishbone Wells Steam Stimulation Effect

Dynamic Distribution Characteristics of Oil and Water during Water Flooding in a Fishbone Well with Different Branch Angles

“…Some experimental and numerical simulation studies have been conducted to analyze the application of fishbone well in CO 2 huff n puff and the process of SAGD, and the recovery differences of vertical wells, horizontal wells, and multi-branch wells are compared and studied. 2 Compared with the horizontal injection well, the fishbone well can increase the control area, form planar flooding, and hold the injection water upward slowly and evenly. 8 Multilateral wells have better performance than vertical wells in shale due to the larger heat-exchange area during the process of in situ conversion.…”

“…Compared with the conventional horizontal well, the fishbone well, with multilateral wellbores and increased reservoir drainage area, has high potential for enhancing oil production in the oilfield. Because its branches increase the contact area between the wellbore and oil formation and make it easier for oil to enter the wellbore or for fluids to be injected into the reservoir. − Moreover, previous studies indicate that the fishbone well has obvious advantages in enhanced oil recovery (EOR) and wide market prospects. , …”

“…Fipke and Celli discussed the concept of using fishbone wells in a heavy oil reservoir and concluded that it can be a more practical way to improve the recovery factor of intended heavy oil reservoirs . In addition, some authors studied the fishbone wells’ performance including the structural parameters of branch wells and the properties of reservoirs. , Zhou et al studied fishbone wells in an offshore oilfield and indicated that the fishbone well pattern could extend the steam distribution . Manshad found that the fishbone structure raised production by 393%, while drilling cost only increased by 130% compared with a conventional horizontal well .…”