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1. (US20130081813) Methods of fluid loss control, diversion, and sealing using deformable particulates

Office : United States of America
Application Number: 13252349 Application Date: 04.10.2011
Publication Number: 20130081813 Publication Date: 04.04.2013
Grant Number: 08936086 Grant Date: 20.01.2015
Publication Kind : B2
IPC:
E21B 33/13
C09K 8/508
C09K 8/035
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
33
Sealing or packing boreholes or wells
10
in the borehole
13
Methods or devices for cementing, for plugging holes, crevices, or the like
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
50
Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
504
Compositions based on water or polar solvents
506
containing organic compounds
508
macromolecular compounds
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
02
Well-drilling compositions
03
Specific additives for general use in well-drilling compositions
035
Organic additives
CPC:
C09K 8/035
C09K 8/508
Applicants: Liang Feng
Halliburton Energy Services, Inc.
Todd Bradley L.
Welton Thomas D.
Saini Rajesh K.
Inventors: Liang Feng
Todd Bradley L.
Welton Thomas D.
Saini Rajesh K.
Agents: McDermott Will & Emery LLP
Soehnge Holly
Priority Data:
Title: (EN) Methods of fluid loss control, diversion, and sealing using deformable particulates
Abstract:
(EN)

Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. The polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a Tg above about −15° C. When the polymeric particulates are placed into a subterranean formation having a temperature above about 65° C. they transform from rigid form to malleable form and are able to provide fluid loss, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a well bore. The malleable particulates then degrade over time in the subterranean formation.