Saudi Arabia holds the title as the world's largest producer and exporter of total petroleum liquids, and the country's national corporation, Saudi Aramco retains the most proven reserves and production of hydrocarbons worldwide. Only behind Russia as the largest crude oil producer, Saudi Arabia has an estimated 267 billion barrels of proven oil reserves, including 2.5 billion in the Saudi-Kuwaiti Neutral Zone, and 253 trillion cubic feet (Tcf) of proven natural gas reserves. Impressively, more than half of Saudi Arabia's oil reserves are sourced from only eight fields.
Cementing a well is the procedure of developing and pumping cement into the wellbore. It is part of the process of preparing a well for further drilling, production or abandonment. Cementing can be used to permanently shut off water penetration into the well, to seal the annulus after a casing string is run, to seal a lost circulation zone, or to plug an existing well.