PBL® Bypass System Successfully Pumped Gross LCM Multiple Times to Cure Losses, Saving Rig Days

Challenge

An E&P company was drilling a well in the northern Punjab region of Pakistan. While drilling, mud losses were encountered in the 12 ¼- and 8 ½-in. hole sections.

Drilling through the Murree formation in the 12 ¼-in. hole section, from 1453 to 1471m, heavy dynamic losses of up to 240 bph were
In the 8 ½-in. section, dynamic losses of up to 200 bph, from 1743 to 2372m, were
Initially, LCM was pumped through the bit, but losses were not properly

Solution

In the 12 ¼-in. section, the operator added the 8 ½-in. DSI PBL® Bypass System, with extended catcher sub, to the BHA to cure heavy mud losses. For the 8 ½-in. hole section, the operator ran the 6 ¾-in. PBL® Bypass System, with extended catcher sub, to immediately address the anticipated heavy losses.

Conclusion & Recommendation

Using the DSI PBL® Bypass System in the drilling BHA enabled the operator to handle losses using gross LCM in a timely manner, which ultimately reduced rig time and the cost of expensive drilling fluid.

PBL® Bypass System Successfully Pumped Gross LCM Multiple Times to Cure Losses, Saving Rig Days

Challenge

Solution

Conclusion & Recommendation

Key facts