Hydril USA Distribution LLC

Yuhua Dong

Sitaraman Krishnan

Ming Yu Huang

Zackary Putnam

Malavarayan Sankarasubramanian

Miao Luo

Monavareh Torabizadeh

John B McLaughlin

John C Moosbrugger

Read Joseph Johnson

The invention relates to elastomeric compositions containing filler particles that are predominantly two-dimensional in shape. The elastomeric compositions exhibit significantly improved thermal, chemical, and mechanical properties as compared with elastomers containing conventional fillers such as natural clay, carbon black, and carbon fiber. In addition, the elastomeric compositions of the invention exhibit improved resistance to solvent-induced swelling and to unwanted permeation of gases such as hydrogen sulfide. The invention also provides a method of forming such elastomeric compositions and methods of using such elastomeric compositions to prepare elastomeric articles with improved resistance to thermal, chemical, and mechanical stresses.

Filled elastomers with improved thermal and mechanical properties

A packer unit to be used in an annular blowout preventer. The packer unit includes an elastomer body including a compound of a nitrile rubber base polymer having a polymer chain, and a quantity of fluorine atoms attached to the polymer chain. The compound includes between 50 and 60% of the nitrile elastomer, between 25 to 35% carbon black, and the rest includes other materials. The quantity of fluorine atoms comprises short-chain fluorocarbon chain molecules The quantity of fluorine atoms displaces at least an equal quantity of hydrogen atoms from the polymer chain when the elastomer body is fluorinated.

Short-chain fluorocarbon-grafted elastomer blowout preventer packers and seals for enhanced H2S resistance

Growing community of inventors

Houston, TX, United States of America

Yuhua Dong