Petroleum Acronyms
OIL & GAS GLOSSARY
HomeGlossarySubmitAbout
Home/Glossary/S/O
Category
General Industry Term
In This Category
SNRPSNSSNSGSNUISOSOSOASOAR
General Industry Term

S/O

Definition

Slack Off

s/o means slack off.

The controlled reduction of hook load when lowering the drill string into the wellbore.

✓ Verified term
Suggest a correction

You might also be looking for

WO/O
Workover or Operations
TSOV
Tubing Safety Open Valve
SPOP
Spontaneous Potential Open Hole
SRK
Source Rock
COM
Commercial
Petroleum Acronyms

The comprehensive reference for oil and gas acronyms, abbreviations, and petroleum industry terminology. Used by engineers, geologists, and industry professionals worldwide.

Quick Links

  • Browse Glossary
  • Submit a Term
  • About
  • Contact
  • Privacy Policy
  • Terms of Use

Guides

  • Acronyms 101
  • Drilling Acronyms
  • HSE Terminology
  • Reservoir Engineering
  • Upstream / Midstream / Downstream

Categories

  • Drilling & Wells
  • HSE & Risk
  • Production & Operations
  • Reservoir & Subsurface
  • Marine & Logistics
© 2026 Petroleum Acronyms. All rights reserved.This website is an independent reference resource for oil and gas terminology. Company names and trademarks mentioned belong to their respective owners and are used solely for identification and informational purposes. No affiliation or endorsement is implied.