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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jin Lv Wei Li |
| Copyright Year | 2013 |
| Description | Author affiliation: State Key Lab. of Multi-phase Flow, Xi'an Jiaotong Univ., Xi'an, China (Wei Li) || Mech. Eng. Coll., Xi'an Shiyou Univ., Xi'an, China (Jin Lv) |
| Abstract | In serious vertical heterogeneity reservoir, the injected-water along the high-permeability layer break fastly into the production well, while in low-permeability layer there are many death oil region that the injected-water does not spread. For injected-water did not affect crude oil within a low permeability layer, displacement efficiency significantly reduced [1][2]. Further spread of the injected water to the low permeability regions, improvement of vertical sweep of injected-water, creating equilibrium displacement front can raise oil recovery, prolong water-free production period and reduce volumes of injected-water. In view of this, theoretical study on water flooding characteristic in heterogeneous plane models of sandstone in this article has been done. The main conclusions are as follows: (1) establishes a vertical exchange of oil-water relationship, exchange capacity is related mainly to capillary force, gravity, start-up pressure and flow cross-sectional area. (2) water-bearing saturation gradients makes injected-water flow from high water to low water areas. For water-wet reservoir, the injected-water flows from the higher layer to low-permeability layers, and for oil-wet reservoirs, precisely the opposite. (3) as the density of the injected water was increased, the efficiency of water flooding didn't change obviously in anti-prosodic models of sandstone and ultimate recovery rates was little difference between the two. And with increasing the density of injected water, vertical flowing cross-sectional area and oil displacement efficiency increased all. |
| Starting Page | 1350 |
| Ending Page | 1353 |
| File Size | 212485 |
| Page Count | 4 |
| File Format | |
| ISBN | 9780769550169 |
| DOI | 10.1109/ICDMA.2013.322 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-29 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Water-bearing saturation gradients Mathematical model of vertical exchange of oil-water Reservoirs Permeability Water-oil flow Displacement efficiency Floods Mathematical model Low permeability Heterogeneous plane model Gravity |
| Content Type | Text |
| Resource Type | Article |
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