Definition(s)
Apex
Opening at lower end of a hydrocyclone.
Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Opening at lower end of a hydrocyclone.
Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards