A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield
Abstract: Gaotaizi oil zone has gone into a high water cut development stage, injecting water easily fingers through high permeability layers, and the conventional adjustments to water injecting projects are no longer efficient. To control the ascending rate of water cut, slow down the production de...
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KeAi Communications Co., Ltd.
2008-04-01
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Series: | Petroleum Exploration and Development |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1876380408600300 |
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doaj-64e2cf29b5bb47f4b1cd920fafba91172021-02-02T08:53:45ZengKeAi Communications Co., Ltd.Petroleum Exploration and Development1876-38042008-04-01352220224A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing OilfieldBo YAO0Qing-dong ZHAO1Corresponding author; No.1 Oil Production Plant of Petrochina DaQing Oil field Company, Daqing 163000, ChinaNo.1 Oil Production Plant of Petrochina DaQing Oil field Company, Daqing 163000, ChinaAbstract: Gaotaizi oil zone has gone into a high water cut development stage, injecting water easily fingers through high permeability layers, and the conventional adjustments to water injecting projects are no longer efficient. To control the ascending rate of water cut, slow down the production decline and recover the residual oil to the utmost, it is necessary to subdivide oil layers and adjust water flooding. Subdivision is affected by the sublayer number and sandstone thickness in one segment, the variation coefficient between layers, the fingering coefficient in a single layer, and the thickness of interbeds between layers. Since the method is applied, injection profiles between and in the layers have been effectively improved, and the producing degree of the oil zones between connective oil wells increased. The oil output increased 18 t/d, the composite water cut decreased by 0.42%, and the formation pressure decreased 0.46 MPa. Keywords: high water cut stage, subdivision and adjustment, variation coefficient, water flooding, enhanced oil recoveryhttp://www.sciencedirect.com/science/article/pii/S1876380408600300 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bo YAO Qing-dong ZHAO |
spellingShingle |
Bo YAO Qing-dong ZHAO A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield Petroleum Exploration and Development |
author_facet |
Bo YAO Qing-dong ZHAO |
author_sort |
Bo YAO |
title |
A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield |
title_short |
A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield |
title_full |
A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield |
title_fullStr |
A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield |
title_full_unstemmed |
A successful test with subdivision of oil layers and adjustment of water flooding in Gaotaizi oil zone, Daqing Oilfield |
title_sort |
successful test with subdivision of oil layers and adjustment of water flooding in gaotaizi oil zone, daqing oilfield |
publisher |
KeAi Communications Co., Ltd. |
series |
Petroleum Exploration and Development |
issn |
1876-3804 |
publishDate |
2008-04-01 |
description |
Abstract: Gaotaizi oil zone has gone into a high water cut development stage, injecting water easily fingers through high permeability layers, and the conventional adjustments to water injecting projects are no longer efficient. To control the ascending rate of water cut, slow down the production decline and recover the residual oil to the utmost, it is necessary to subdivide oil layers and adjust water flooding. Subdivision is affected by the sublayer number and sandstone thickness in one segment, the variation coefficient between layers, the fingering coefficient in a single layer, and the thickness of interbeds between layers. Since the method is applied, injection profiles between and in the layers have been effectively improved, and the producing degree of the oil zones between connective oil wells increased. The oil output increased 18 t/d, the composite water cut decreased by 0.42%, and the formation pressure decreased 0.46 MPa. Keywords: high water cut stage, subdivision and adjustment, variation coefficient, water flooding, enhanced oil recovery |
url |
http://www.sciencedirect.com/science/article/pii/S1876380408600300 |
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