Steel and elastomer assembly that has a central through-passage equal to or greater in diameter than the riser bore and that may be positioned in the riser string to reduce local bending stresses.
The Mazatec people are an indigenous people who inhabit an area known as the Sierra Mazateca in the state of Oaxaca in southern Mexico, as well as some communities in the adjacent states of Puebla and Veracruz.
Mixtec is a language family, comprised of the Trique and Cuicatec languages, plus some variations, and is spoken by approximately 550,000 Mexican people. With this language of Mexico, speakers are found primarily in the states of Oaxaca, Puebla and Guerrero, but Mixtec can also be heard in some urban areas.