Isolation of lost circulation zones in sidetracks with expandable profile liner

Tatneft Company widely uses its Expandable Profile Liner technology to mitigate drilling troubles. In 2008 severe lost circulationzones encountered while drilling a 124-mm. sidetrack from wells No. 207z and 5912z were shut off by 23-m and 60-m Expandable Profile Liners of P-146 type. The economic effect of application of trouble zone isolation technology using Expandable Profile Liners while drilling sidetracks amounted to RUR 392.8 thous. per well.

Tatneft Company widely uses its Expandable Profile Liner technology to mitigate drilling troubles. In 2008 severe lost circulationzones encountered while drilling a 124-mm. sidetrack from wells No. 207z and 5912z were shut off by 23-m and 60-m Expandable Profile Liners of P-146 type. The economic effect of application of trouble zone isolation technology using Expandable Profile Liners while drilling sidetracks amounted to RUR 392.8 thous. per well.