Development of Technological Complex for Removing Gel and Proppant from Well Bore
- https://doi.org/10.2991/ciggg-18.2019.57How to use a DOI?
- hydraulic fracturing; proppant; gel; hydraulic hammer; coiled tubing; jet pump; foam
The problems arising from the backflow of proppant, rock particles, non-decomposed liquid from hydraulic fractures into the well bore are considered in the paper. The urgency of developing a device for flushing out in the horizontal well after formation hydrofracturing is proved. It is shown that solidified and viscoelastic particles of gel stick to the walls of a well. Later these zones of particles' deposits decrease potential flow rates. On the basis of the conducted investigation, the authors developed a device for removing gel and damaged proppant which allows for cleanout of horizontal well bore after formation hydrofracturing. The main advantage of the proposed device is joint hydraulic and mechanic effect on deposits. In the operation of the unit, the rotation of the crown under dynamic head makes it possible to clean efficiently the surface over the entire circumference of the tube. It is proposed to use foam to act efficiently on deposits. Foam can be generated by the jet pump developed by the authors. As the treatment proceeds, the device can move in axial direction through the shifting of the coiled tubing. On completion of well flushing out, the nozzle cease to rotate and returns to its original position thus preventing from internal fouling of the device.
- © 2019, 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/).
Cite this article
TY - CONF AU - A. E. Verisokin AU - S. A. Kutovoy AU - T. A. Gunkina AU - I. O. Datsyuk PY - 2019/03 DA - 2019/03 TI - Development of Technological Complex for Removing Gel and Proppant from Well Bore BT - Proceedings of the VIII Science and Technology Conference “Contemporary Issues of Geology, Geophysics and Geo-ecology of the North Caucasus” (CIGGG 2018) PB - Atlantis Press SP - 301 EP - 304 SN - 2352-5401 UR - https://doi.org/10.2991/ciggg-18.2019.57 DO - https://doi.org/10.2991/ciggg-18.2019.57 ID - Verisokin2019/03 ER -