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.
Xipe Totec (Shee-PAY-toh-teck) was the Aztec god of fertility, abundance, and agricultural renewal, as well as the patron of goldsmiths.