Watered-out Characteristic and Residual Hydrocarbon Potential Analysis of Central Distric of Xing6 in Daqing Oilfield, China

DOI

10.2991/aeece-15.2015.38How to use a DOI?

Keywords

Watered-cut zone logging, Central distric of xing6 in Daqing Oilfield, Channel sandbody, Interchannel sandbody, Untabulated reservoir, Degree of watered-out, Potential of residual hydrocarbon.

Abstract

Watered-cut zone logging technology is able to quantitatively obtain the remaining oil saturation and water cut of the underground reservoirs, to accurately judge the waterflooded grades of them, which is an important way and method to understand the distribution of residual hydrocarbon. The study shows that the overall watered out grades and ratio of the medium to high watered out are increasing year by year, whereas the low to non-watered out are decreasing year by year, which are all based on the statistics and analysis of watered cut zone logging of different well pattern periods in the central distric of xing6 in Daqing Oilfield. The statistics of the reservoirs of different sedimentary types has indicated that the waterflooded degree of channel sandbody is highest and the ratio of medium to high watered out is more than 96%, and the percentage of interchannel sandbody is 69%, however, these two kinds of reservoirs have not reach the stage of inefficient water injection which still have much potential of remaining oil. The untabulated reservoir is a special one in Daqing Oilfield and the producing degree of it is very low. The main reason why that case happened is that the scattered distribution in the plane makes the reservoir hard to be controlled by well pattern and the worse physical property puts it easier to be shielded by high-permeability layers when the reservoir adopts commingling production. Therefore, it is advisable to utilize the independent waterflooding development for the untabulated reservoir to improve the producing degree of it.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Weiqiang Li
AU  - Taiju Yin
AU  - Aiwen Zhao
AU  - Lei Li
AU  - Hai Wu
AU  - Wen Zhou
PY  - 2015/09
DA  - 2015/09
TI  - Watered-out Characteristic and Residual Hydrocarbon Potential Analysis of Central Distric of Xing6 in Daqing Oilfield, China
BT  - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering
PB  - Atlantis Press
SP  - 192
EP  - 195
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.38
DO  - 10.2991/aeece-15.2015.38
ID  - Li2015/09
ER  -