The upper completion refers to all components from the bottom of the production tubing upwards. Proper design of this completion string is essential to ensure the well can flow properly given the reservoir conditions and to permit any operations as are deemed necessary for enhancing production and safety.
Variously known as the Fourth of July and Independence Day, July 4th has been a federal holiday in the United States since 1941, but the tradition of Independence Day celebrations goes back to the 18th century and the American Revolution (1775-83).
4 July is the most significant national holiday in the United States. It celebrates the Declaration of Independence, adopted on 4 July, 1776. The Thirteen Colonies of America declared themselves to be states and no longer part of the British Empire, though the revolutionary war continued for some time after.