code: def well_fields(self, well_x=1, well_y=1):
          
          xpath = './ScanFieldArray/ScanFieldData'
          xpath += _xpath_attrib('WellX', well_x)
          xpath += _xpath_attrib('WellY', well_y)
          return self.root.findall(xpath)
docs: All ScanFieldData elements of given well.
  
          Parameters
          ----------
          well_x : int
          well_y : int
  
          Returns
          -------
          list of lxml.objectify.ObjectifiedElement
              All ScanFieldData elements of given well.