* Vertical distance from pumping level
to delivery level
Hariga used to export around 120,000 bpd but at least 20,000 bpd are needed to feed the Tobruk refinery, an industry source said, adding that 180,000 bpd had been the original pumping level before the pipeline blast.
On Tuesday, pumping levels reached around 40,000 barrels, an industry source said.
When the pump is started, the water level will normally drop to a new, lower level referred to as the pumping level
. The pumping level
is a function of the rate at which the well is being pumped--the greater the rate, the lower the pumping level
Alem added that since April 1 the water pumping level
to Amman from Deir Ala was upgraded up to 120,000-140,000 cubic meters per day.
There is a 500 |m.sup.3~ collecting sump for mine water on the pumping level
which can be emptied during the night, allowing the pumps to stand idle for much of the day, thereby reducing running costs by taking advantage of cheap off-peak power.
Five of the seven pumps are variable-speed, which allows a much wider range of pumping level
operation than can be obtained from constant-speed pumps.
Wells 4 and 3 were relatively shallow, with static water levels of 21 and 22 feet, pumping levels
of 25 and 26 feet, and total well depths of 43 and 46 feet, respectively; both began service in the 1930s, similar to the other wells in the system, which were also older.
Also, failure to reduce groundwater pumping levels
to HGSD required levels would result in financial penalties.
Key data required for this calculation includes production well pumping levels
over a range of flows and heat pump performance over a range of entering water temperatures.
Electric rate structures can be designed to facilitate the sharing of income risks, due to unusual irrigation pumping levels
, between power suppliers and irrigators.