Tebchaws Asmeskas tau pov thawj cov pa roj ntsha ntawm 9.7 tcm (341 tcf). Nws qhov chaw nkev loj tshaj plaws, Marcellus Shale, yuav muaj txog li 14 tcm (500 tcf) raws li qee qhov kev kwv yees. Spanning Pennsylvania, Ohio, West Virginia, New York, thiab qhov chaw me me ntawm cov xeev nyob sib ze thiab tsim tau ntau dua 80.3 bcm (2,836 bcf) ib xyoos, daim teb no yog qhov loj tshaj plaws ntawm cov pa roj carbon monoxide hauv Tebchaws Meskas thiab yog ib qhov chaw roj av loj tshaj plaws hauv ntiaj teb.
Hugoton tau pom nyob rau xyoo 1927 hauv Kansas thiab tau pom tias txuas ntxiv mus rau Oklahoma thiab Texas panhandles. Hugoton muaj kwv yees qhov kawg rov qab los ntawm 1.5 tcm (53 tcf), uas qee qhov 65 feem pua tau tsim. Ntau tshaj 10,000 qhov dej tau raug laum nyob rau hauv qhov chaw dav dav, uas tsim los ntawm cov Permian limestones thiab dolomites. Cov roj accumululations yog stratigraphically tswj los ntawm variations nyob rau hauv lithology. Qhov chaw tsim khoom nthuav dav raws li 400-km (250-mais) sib.
Canada muaj kwv yees li 2.1 tcm (73 tcf) ntawm cov pov thawj natural gas reserves. Nws cov peev txheej tsis tau tshawb pom yog yuav luag sib npaug ntawm Tebchaws Meskas. Ib qhov chaw nkev loj tshaj plaws yog Elmworth, nrhiav pom hauv Alberta hauv xyoo 1976. Elmworth muaj qee qhov 560 bcm (20 tcf) ntawm cov roj hauv Cretaceous sandstone reservoir.
Mexico cov pov thawj natural gas reserves rau qee qhov 356 bcm (12.6 tcf). Nws cov roj ntau lawm yog kis thoob plaws hauv lub tebchaws, feem ntau ntawm nws los ntawm Canterell roj teb hauv Gulf of Mexico. Txawm hais tias Mexico qhov kev siv roj av tau nce ntxiv, ib feem yog vim kev xav tau los ntawm kev lag luam hluav taws xob ntau ntxiv, ntau lab tus cubic meters ntawm cov roj sib txuas tau tawg txhua xyoo ntawm cov chaw tsim roj av uas tsis tuaj yeem ua tiav tag nrho cov roj tsim tawm.
