NOTE: STEM WEIGHT GIVEN IS AT A BALANCE POINT.
BALANCE POINT / FORCE = PRESSURE TIMES AREA
FORCE IS WEIGHT REQUIRED TO BALANCE (IN POUNDS)
PRESSURE IS WELL PRESSURE (IN PSI)
AREA IS CROSS SECTIONAL AREA OF WIRELINE (IN INCHES SQUARED)
CROSS SECTION OF CABLE =∏ D2 / 4
WEIGHT REQUIRED (POUNDS) = PRESSURE (PSI) TIMES ∏ D2 / 4 OF WIRE LINE