Date tree trunk and rachis-based superfine fibrous materials for seepage loss control

A method to control lost circulation in a lost circulation zone in a wellbore, comprising:

• introducing an altered drilling fluid into the wellbore such that the altered drilling fluid contacts the lost circulation zone and reduces a rate of lost circulation into the lost circulation zone, where the altered drilling fluid comprises a drilling fluid and a lost circulation material (LCM), wherein the drilling fluid comprises a low solid non-dispersed mud, wherein the LCM comprises:
• a plurality of date tree trunk fibers produced from date tree trunks and a plurality of date tree rachis fibers produced from date tree rachises, each of the plurality of date tree trunk fibers and the plurality of date tree rachis fibers having a length in the range of about 20 microns (μm) to about 300 μm.