BJ Services sets GoM cementing record

BJ Services has set a world record for cementing the longest solid expandable tubular liner for an operator in the Gulf of Mexico.

Offshore staff

HOUSTON -- BJ Services has set a world record for cementing the longest solid expandable tubular liner for an operator in the Gulf of Mexico. The 6,935-ft (pre-expansion length) 7 5/8-in. liner was set and cemented with a shoe depth below 20,000 ft (6000 m). The company used a specially formulated XtremeSet cement slurry system to isolate the deep wellbore section, including bottomhole static temperatures of 368 °F (187 °C).

To seal the annulus in the operation, BJ Services formulated the XtremeSet slurry to remain fluid for more than 15 hours downhole, permitting the expansion of the liner. BJ cementing specialists conducted laboratory testing and simulation modeling to determine the proper circulating temperature for the application and precise additive package. The custom XtremeSet slurry formulation weighted 18.7 ppg (2.24 g/cc) against a mud weight of 17.9 ppg (2.14 g/cc). The system performed as designed, yielding good density control, minimal fluid loss, and zero free water, the company says. After drillout and a successful leakoff test to 19 ppg (2.28 g/cc) equivalent mud weight, the operator began drilling with no need for remedial operations.

12/10/2009

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