Looking through the source I found that the line if deep_tiles == 1024 then is preventing generation of off-shore oil. Logging deep_tile's value I found that the Sea Block always generates generates deep_tiles < 1024 as it never will have a full chunk of deep sea tiles. I propose that this value is set to a lower threshold. For example > 750. Might also look into the possibility to expose this setting on the front end?

Below are the logs for deep_tiles value:
https://pastebin.com/1Ctarbfs

Below is the screenshot of a typical Sea Block map:

https://imgur.com/a/LqIxwMr

Looking forward to enjoying this mod :)

i will guess i could just make the mod check for the combined number of deep and shallow water tiles. i will try to get this working in the next release.

Awesome. Thanks :)

I did address the issue in the current release, but i did not test it, since i did not want to install all of Sea Blocks' mod prerequisites. Maybe you could try it out yourself and let me know if it works. Thanks!

Had to change the dependency inside info.json from ?SeaBlock >= 0.20 to ?SeaBlock >= 0.2 since the current version of Sea Block is 0.2.17 https://mods.factorio.com/mod/SeaBlock

Mod disabled itself after the update in my current Sea Block game, but following HailBurns advice worked to keep it enabled and I also see the deep oil patches spawning now. Looks like Sea Block is about to get more interesting :)

damn, thats what i get for not testing myself before uploading. will upload a fixed version....

Oil & power no longer an issue in Sea Block :D https://imgur.com/Ww6eO82. Awesome work schnurrebutz!