Tethys Oil has made an oil discovery onshore Oman at exploration well B4EW6. The exploration well was drilled on a previously undrilled structure onshore Oman and has tested flow rates in excess of 2,200 b/d on a 32/64-in. choke from the Lower Buah formation, the company said in a press release.

B4EW6 was drilled approximately 13 km (8 miles) south of the B4EW4 discovery. The new B4EW6 well constitutes the best flows encountered from the Lower Buah outside the B4EW4 area so far, the company said. The well is hooked up to the production system to undergo a long-term production test.

Tethys Oil AB, through its wholly owned subsidiary Tethys Oil Block 3 and 4 Ltd., has a 30% interest in blocks 3 and 4. Partners are Mitsui E&P Middle East BV with 20% and the operator CC Energy Development SAL (Oman branch) holding the remaining 50%.