As some analysts predicted a renewed nuclear deal with Iran could affect crude oil prices, it did on Tuesday’s trading.
Oil prices fell from a two-month high and it came after reports indicated the U.S. and Iran are making progress on reviving the deal restricting the OPEC country’s nuclear weapons development, a deal that would boost crude supply.
Just as oil prices came close to the $70 a barrel mark overseas and also rose in the U.S. on Monday, they dropped in Tuesday’s trading.
Global benchmark Brent crude for July delivery fell 75 cents to $68.71 a barrel in ICE Futures Europe.
In the U.S., West Texas Intermediate crude for June delivery dropped 78 cents and finished at $65.49 a barrel in trading on the New York Mercantile Exchange.
June natural gas fell 10 cents to $3.01 per 1,000 cubic feet.
Most Oklahoma energy stocks also dropped in Tuesday’s trading. However, one marked exception was Mammoth Energy Services which had a 10.19% gain on a 32-cent increase to $3.46 a share.
Others didn’t do so well.
Alliance Resource Partners, LP fell 32 cents for a 4.93% loss to $6.17.
Blueknight Energy Partners LP rose 4 cents for a 1.10% gain to $3.67.
Chesapeake Energy went up $1.31 for a 2.62% gain to $51.30.

Chevron (CVX) down 3.29 at 106.18 – change 3.01%
ConocoPhillips (COP) down 1.01 at 57.29 – change 1.74%
Diamondback Energy (FANG) down 0.36 at 80.00 – change 0.45%
Energy Transfer LP (ET) down 0.04 at 10.37 – change 0.39%
Enterprise Products Partners (EPD) down 0.26 at 23.91 – change 1.08%
EOG Resources (EOG) down 2.13 at 82.97 – change 2.51%
ExxonMobil (XOM) down 1.76 at 60.43 – change 2.84%
Kinder Morgan (KMI) down 0.09 at 18.71 – change 0.48%
Marathon Oil Corp. (MRO) down 0.29 at 11.93 – change 2.30%
National Oilwell Varco (NOV) down 0.52 at 17.43 – change 2.90%
Occidental Petroleum (OXY) down 0.52 at 25.87 – change 1.98%
Phillips 66 (PSX) down 1.04 at 86.76 – change 2.19%
Pioneer Natural Resources (PXD) down 2.66 at 158.37 – change 1.66%
Valero (VLO) down 2.04 at 79.58 – change 2.50%
CLOSING TOP UTILITY STOCKS
American Electric Power (AEP) down 1.31 at 85.45 – change 1.51%
CenterPoint (CNP) down 0.33 at 24.70 – change 1.32%
Entergy (ETR) up 0.01 at 105.53 – change 0.01%