Oil firms rise after Iran says no nuclear material will leave the country

** Shares of US oil and gas companies rise premarket as oil prices climbs

** Oil prices rose about 1% on Wednesday from the previous session's two-month lows, after Iran's security chief said Tehran would not allow even a single particle of enriched nuclear material to leave the country O/R

** Brent futures were up $1.62, or 1.77%, at $93.11 a barrel by 1305 GMT. US West Texas Intermediate crude gained $1.25, or 1.45%, to $87.29

** "While expectations of improving Middle Eastern supply availability and bearish US inventory data have weighed on the market, uncertainty around the US-Iran conflict continues to provide some support," ING analyst said in a note

** Oil major ExxonMobil XOM.N rises 0.93%, while Chevron CVX.N gains 0.78%

** CNX Resources CNX.N rises 2.36%, while SM Energy SM.N and Devon Energy DVN.N gains over 1%

** Other producers APA APA.O, Occidental Petroleum OXY.N and EOG Resources EOG.N rise between 1% and 1.3%

** Refiner PBF Energy PBF.N rises about 4% and Marathon Petroleum MPC.N gains 1.9%

** Oilfield services providers: Baker Hughes BKR.O up 3%; SLB SLB.N and Halliburton HAL.N rise 2% and 2.8%, respectively