Application of Slick Water with Low Surface Tension in Water-Blocking Damaging Gas Reservoirs

DOI

10.2991/iceesd-18.2018.55How to use a DOI?

Keywords

slick water; low surface tension; water blocking damage; tight gas reservoirs

Abstract

The characteristics of WF gas oil in Jilin Oilfield are low porosity, low permeability, small pore-throat radius, and low formation pressure coefficient, causing that fracturing fluid flow back slowly, decreasing productivity. Laboratory test shows that water blocking damage is the major factor which restricts production of these gas oils. The water blocking damage is caused by fracturing fluid seepage among small pore-throats. The slick water fracturing fluid system is studied, which have low surface tension and high snit-swelling rate, decreasing the rate of water blocking damage to 20%. This system is used in the fracture of Well C609. 15 hours later, gas breaks through. The flow back rate is up to 35% naturally. After gas lifting, the flow back rate is increased to 68%, which is obviously higher than that rate in the similar wells using conventional fracturing fluid. The slick water fracturing fluid system is field applied on 16 wells. The natural flow back rate is from 16.5% up to 31.2%. And the flow back rate is increased from 35% to 70.3% after gas lifting. It is proved that this system is obviously effective and hence shows promising application prospects.

Copyright

© 2018, 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  - Zhaopeng Zhu
PY  - 2018/05
DA  - 2018/05
TI  - Application of Slick Water with Low Surface Tension in Water-Blocking Damaging Gas Reservoirs
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 330
EP  - 333
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.55
DO  - 10.2991/iceesd-18.2018.55
ID  - Zhu2018/05
ER  -