S e c t i o n 1 5 - P a g e 1 May 2013 DIAMOND SEAL ® Absorbent Polymer for Lost Cir culation Description DIAMOND SEAL is a water -swellable but not water -soluble, 100crystalline synthetic polymer . DIAMOND SEAL absorbs hundr eds of times its own weight in water . It is intended for use primarily as a lost cir culation material for horizontal dir ectional drilling. Applications/Functions • Lost cir culation material for horizontal dir ectional drilling • Pr event inadvertent r etur ns in river cr ossing applications • Stabilize bor ehole in cobble and gravel • Stabilize unconsolidated formations Advantages • Rapid water absorption • Ef fective in mitigating lost cir culation • Economical-small quantity yields lar ge volume • Easy to use • Non-fermenting Recommended T r eatment For slug tr eatment • Add to 1 pound (0.25 - .5 kg) DIAMOND SEAL per joint As a pill: • Add DIAMOND SEAL at 10 – 20 lb/100 gallons of drilling fuid • Add DIAMOND SEAL at 12 – 24 kg/m 3 of drilling uid T r eatment for Loss of Cir culation or Inadvertent Retur ns in HDD Operations: (Prior to pumping, r emove all in-line scr eens in cir culating system) Add the following to existing drilling uid and displace: BAROLIFT ® - 0.25 – 0.5 lb/100 gallons (0.3 – 0.6 kg/m 3 ) N-SEAL TM - 3 – 5 lb/100 gallons (3.6 – 6.0 kg/m 3 ) DIAMOND SEAL - 10 – 20 lb/100 gallons (12 – 24 kg/m 3 ) www .dsiundergr ound.com