keyword

when was petroleum first used

Monthly search volume and cost-per-click data for "when was petroleum first used" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=when+was+petroleum+first+used&country=us" +--------------+------------------+ | volume | 140 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
when was oil discovered	1,900	$0	20/20
when was crude oil first discovered	1,900	$0	12/20
how petroleum was discovered	590	$0	12/20
when petrol was discovered	390	$0	12/20
history of oil	320	$0	12/20
who discovered oil first	210	$0	12/20
when was oil first discovered in the world	140	$0	13/20
what was oil first used for	50	$0	15/20
when did petroleum start being used	30	$0	16/20
when was petroleum invented	30	$0	13/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=when+was+petroleum+first+used&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt