Fiber suspending agent for lost-circulation materials

A system of treating a subterranean formation comprising:

• a pump;
• and
• a treatment fluid, wherein the treatment fluid comprises:
• a base fluid;
• a lost-circulation material, wherein the lost-circulation material inhibits or prevents some or all of the treatment fluid from penetrating into a subterranean formation from a wellbore, wherein the wellbore penetrates the subterranean formation;
• and
• a suspending agent, wherein the suspending agent consists of a plurality of fibers, wherein the fibers have a length to diameter aspect ratio of about 100:1 to about 5000:1, wherein the fibers have a distribution such that at least 90% of the fibers have a length in the range of about 5 to about 25 millimeters;
• and wherein the suspending agent is in at least a sufficient concentration to provide a lost-circulation material distribution of at least 30% for a test treatment fluid consisting essentially of the base fluid, the lost-circulation material, and the suspending agent at a temperature of a lost-circulation zone of the subterranean formation and after performing static aging for at least 1 hour;
• and
• wherein the pump pumps the treatment fluid into the subterranean formation.