relay logic - restringing
- released material entrapment
- released position
- released swab unit
- releases
- releases and castes
- releasing
- releasing agent
- releasing and circulating overshot
- releasing bowl overshot
- releasing clamp
- releasing current
- releasing current (deprecated)
- releasing device
- releasing fishing tool
- releasing gear
- releasing key
- releasing lever
- releasing of brake
- releasing of stuck pipes
- releasing overshot
- releasing ring
- releasing socket
- releasing sub
- releasing tap-gage
- releasing tool
- releasing-and-circulating overshot
- releasing-bowl overshot
- releg
- releg a derrick
- relevance
- relevance ratio
- relevance tree
- relevancy
- relevancy criterion
- relevancy rating
- relevant authority
- relevant bias
- relevant content, reflecting cultural diversity and the right to communicate
- relevant data
- relevant failure
