Question 1: ________ (aka "mud") is pumped down the inside of the drill pipe and exits at the drill bit.
Question 2: However, modern ________ technologies allow for strongly deviated wells which can, given sufficient depth and with the proper tools, actually become horizontal.
Question 3: Through Islamic Spain, distillation became available in ________ by the 12th century.
Question 4: The ancient records of China and ________ are said to contain many allusions to the use of natural gas for lighting and heating.
Question 5: The well is created by drilling a hole 5 to 36 inches (127.0 mm to 914.4 mm) diameter into the earth with a drilling rig which rotates a ________ with a bit attached.
Question 6: They had depths of up to about 800 feet (240 m) and were drilled using bits attached to ________ poles.
Question 8: Also, offshore drilling started up at Baku at Bibi-Eibat field near the end of the 19th century, about the same time that the first offshore oil well was drilled in 1896 at the ________ on the California Coast.
Question 10: An oil well is a general term for any boring through the ________'s surface that is designed to find and produce petroleum oil hydrocarbons.