US 10,988,665 B2
Permeable and decomposable plug forming rapidly dehydrating fluid (RDF)
Md Amanullah, Dhahran (SA); and Ali Radhwan, Anak (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 4, 2019, as Appl. No. 16/374,938.
Prior Publication US 2020/0317986 A1, Oct. 8, 2020
Int. Cl. E21B 33/08 (2006.01); C09K 8/514 (2006.01); E21B 21/00 (2006.01); E21B 33/138 (2006.01)
CPC C09K 8/514 (2013.01) [E21B 21/003 (2013.01); E21B 33/138 (2013.01); C09K 2208/04 (2013.01); C09K 2208/08 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A method to control lost circulation in a loss zone in a wellbore, comprising:
introducing a rapidly dehydrating fluid (RDF) composition into the wellbore such that the RDF composition contacts the loss zone and reduces a rate of lost circulation into the loss zone, wherein the RDF composition consists of:
a carrier fluid;
a cellulosic viscosifier comprising an amount in the range of 3 weight % of the total weight (w/w %) to 4 w/w %;
a plurality of particles formed from date tree seeds, wherein the plurality of particles formed from date tree seeds comprises an amount of 4 weight % of the total weight (w/w %) to about 5 w/w % and each of the plurality of particles formed from date tree seeds has a size of 400 microns to 595 microns; and
a plurality of date tree trunk fibers, the date tree trunk fibers comprising fibers formed from date tree trunks, wherein the plurality of date tree trunk fibers comprises an amount of 7 weight % of the total weight (w/w %) to about 8 w/w %, wherein the RDF composition has a dehydration time of 1.15 minutes to 1.5 minutes at 100 pounds-per-square inch differential (psid) pressure.