公开(公告)号：US20200048534A1

公开(公告)日：2020-02-13

申请号：US16476395

申请日：2017-01-06

Applicant: M-I L.L.C.

Inventor： Balakrishnan Panamarathupalayam ,  Richard Toomes ,  Daniel Alvarez

IPC: C09K8/68 ,  C09K8/72 ,  C09K8/66 ,  E21B37/00

Abstract: A breaker fluid includes a base fluid; lactide; and a mixture of hydrolyzable esters of dicarboxylic acids. A method of breaking a filtercake in a wellbore includes circulating a breaker fluid into the wellbore, the breaker fluid including: a base fluid; lactide; and a mixture of hydrolyzable esters of dicarboxylic acids.

公开(公告)号：US20180312739A1

公开(公告)日：2018-11-01

申请号：US15770470

申请日：2016-10-28

Applicant: M-I L.L.C.

Inventor： Balakrishnan Panamarathupalayam ,  Richard Toomes

IPC: C09K8/508 ,  C09K8/516 ,  C09K8/12 ,  C08L39/06

CPC classification number: C09K8/512 ,  C08F26/10 ,  C08L39/06 ,  C09K8/12 ,  C09K8/5086 ,  C08F220/56 ,  C08F2220/585 ,  C08L33/26

Abstract: Compositions herein may include an aqueous fluid, a crosslinked polyvinylpyrrolidone (PVP), and a betaine based polymer. Methods herein may include pumping a selected amount of a fluid loss pill into a formation, the fluid loss pill including a crosslinked PVP and a betaine based polymer.