The filterPackTop in WellConstruction defines where the gravel or sand pack begins around the screen interval. It should typically start slightly above the screenTopDepth to ensure full coverage of the screened zone. Knowing filterPackTop alongside filterPackBottom confirms that the permeable pack properly surrounds the screen without leaving gaps. This depth interval is documented in well completion logs and helps field staff verify that the seal placed above the filter pack (sealBottom) is positioned correctly to prevent short-circuiting.
Technical section
Data model, API, and internals — visible to developers.