Multi-chem Group, LLC

Halliburton Energy Services, Inc.

Chunfang Fan

Zhiwei Yue

Yang Peng

Liangwei Qu

Funian Zhao

Liu Shi

Ronald Larry Hoppe

Johnathan Scott Hazlewood

The present disclosure relates to compositions, systems and methods for removing iron sulfide scale from a solid object, such as an oilfield component. The compositions include a carbon-carbon (C&#x2014;C) double bond with an electron withdrawing group bonded to at least one of the double-bonded carbons.

Compositions, systems, and methods for removing iron sulfide scale from oilfield components

Compositions, systems, and methods for removing iron sulfide scale from oilfield components using methyl acrylate

Multi-stage treatment methods for the treatment or removal of iron sulfide scales in subterranean operations and operations involving the production and/or transportation of oil and gas. In one embodiment, the methods include identifying one or more types of iron sulfide scale present in a portion of a subterranean formation; introducing a first treatment composition comprising an acid into at least a portion of the subterranean formation to partially dissolve the iron sulfide scale therein; and introducing a second treatment composition into the portion of the subterranean formation after the first treatment composition, the second treatment composition comprising an iron sulfide treating additive selected based at least in part on a type of iron sulfide scale identified in the subterranean formation.

Multi-stage treatment for iron sulfide scales

Processes and compositions to control inorganic sulfide scale formations in oilfield applications, including flow lines, wellbores, and subterranean formations. One example involves providing a treatment fluid comprising: a base fluid, a scale inhibitor, and a water clarifying agent; introducing the treatment fluid into a target region, wherein an inorganic cation and a sulfide anion are present in the target region; allowing the inorganic cation and the sulfide anion to form a sulfide precipitate; and using the treatment fluid to remove at least a portion of the sulfide precipitate from the target region.

Activity enhanced scale dispersant for treating inorganic sulfide scales

Methods, compositions, and systems for scale inhibitor squeeze treatments using certain cationic surfactants are provided. In one embodiment, the methods comprise: introducing a pre-flush fluid into at least a portion of a subterranean formation, the pre-flush fluid comprising a cationic surfactant comprising two or more hydrophilic heads, at least one lipophilic tail, and one or more linking groups to which the hydrophilic heads and the lipophilic tail are bonded; and introducing a treatment fluid comprising anionic scale inhibitor into the portion of the subterranean formation after at least a portion of the pre-flush fluid has been introduced into the portion of the subterranean formation.

Growing community of inventors

Houston, TX, United States of America

Chunfang Fan