Case Study: a large oil drilling service provider eliminates severe lost circulation with SLB FORM-A-BLOK pill slurry

Quick-Acting FORM-A-BLOK Pill Slurry Remedies Severe Lost Circulation in Horizontal Wells

SLB helped a large oil drilling service provider drilling two horizontal wells in eastern Siberia address severe lost circulation while drilling dolerite intervals. The operator experienced no returns in one well and significant fluid loss in the other, and conventional lost circulation pills and bridging agents were not effective.

SLB recommended and deployed a FORM-A-BLOK high-performance lost circulation pill slurry to build an isolation barrier in the loss zone and enable cement plug placement. The solution eliminated lost circulation in the first well and improved returns in the second from no returns to 17,435 galUS/h, allowing cement plugs to be placed successfully on the first try and reducing the need for repeated plugging attempts.