Ozwell E. Spencer (ãªãºã¦ã§ã«ã»Eã»ã¹ãã³ãµã¼, Ozuweru E SupensÄ) is one of Resident Evil's most important and mysterious characters. In the series, he is the owner and co-founder of the Umbrella Corporation, a pharmaceutical drug company that secretly manufactures bio-organic weapons.
These types of pumps give very reliable performance for a number of years. Unfortunately, life is hard for a motor stuck in the bottom of a well. The average lifespan of a pump is probably about 10-15 years. Some pumps will definitely go longer, while some stop working in less. One way or another, the pump will need to be replaced at some point. The pump to the left was in use for about 12 years.
What is the typical productive life time of a horizontally fracked well? Drill Baby Drill author J. David Hughes mentioned that the half-life of a new well is 2 years. Its production declines by 70% the first year, and by 50% the following years. Thus, a well maybe fracked up to 18 times to maintain its production.