US 11,753,573 B2
Calcium carbonate lost circulation material morphologies for use in subterranean formation operations
Dale E. Jamison, Humble, TX (US); Cato Russell McDaniel, The Woodlands, TX (US); Xiangnan Ye, Cypress, TX (US); Sharath Savari, Stafford, TX (US); Chesnee Lae Davis, Spring, TX (US); and Jonathan Paul Walker, Cypress, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jun. 17, 2020, as Appl. No. 16/904,349.
Application 16/904,349 is a division of application No. 15/765,239, granted, now 10,723,935, previously published as PCT/US2015/059150, filed on Nov. 5, 2015.
Prior Publication US 2020/0317984 A1, Oct. 8, 2020
Int. Cl. C09K 8/487 (2006.01); C09K 8/03 (2006.01); C09K 8/504 (2006.01); C09K 8/66 (2006.01)
CPC C09K 8/487 (2013.01) [C09K 8/032 (2013.01); C09K 8/5045 (2013.01); C09K 8/665 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of treating lost circulation in a subterranean formation comprising:
selecting an aspect ratio for a precipitated calcium carbonate lost circulation material (PCCLCM) based at least in part on a type of the subterranean formation;
forming the PCCLCM to have the selected aspect ratio from a reaction mixture comprising a calcium species and a carbonate species;
wherein the calcium species is selected from the group consisting of a calcium ion, a calcium soluble salt, and any combination thereof,
wherein the carbonate species is an ammonium carbonate ion, and
wherein the calcium species and the carbonate species are mixed in a mixing tank fluidically connected to a subterranean formation;
adjusting precipitation conditions to alter morphology of the PCCLCM;
adding non-calcium carbonate fibers to the reaction mixture, wherein the non-calcium carbonate fibers are present in an amount from about 1% to about 30% by weight of the PCCLCM; and
introducing a lost circulation treatment fluid into the subterranean formation, the lost circulation treatment fluid comprising an aqueous base fluid and the PCCLCM, wherein at least a portion of the PCCLCM is deposited in a filter cake across the formation pore throats, and/or fractures to reduce loss of treatment fluids into the subterranean formation.