But the inter-month time spread at $10 a tonne reflected a sharply stronger market versus two weeks ago when it was at $2.
Attacks on Saudi Arabia's oil facilities on Sept. 14 prompted Aramco to source cargoes to plug a supply gap and help soaked up recent excess cargoes.
The time spread is the price difference between front-month first-half November and first-half December and a widening gap typically reflects tightening prompt supplies.
Buyers were more active in seeking spot cargoes this week compared to two weeks ago with Hanwha Total, GS Caltex, Lotte Chemical and Formosa Petrochemical coming forward.
Hanwha Total bought heavy full-range naphtha for first-half November delivery to Daesan at premiums in the high teens a tonne to Japan quotes on a cost-and-freight (C&F) basis, industry sources said, similar to what it paid on Monday.
Lotte Chemical paid a premium in the high single-digit a tonne level to Japan quotes on a C&F basis for naphtha also scheduled for first-half November delivery but to Yeosu, industry sources said.
This was in sharp contrast to the discount of about $2 Lotte had paid on Sept. 5, Reuters data showed.
Although Saudi Arabia has restored its oil production capacity faster than expected, industry sources said it was unclear how much naphtha or gasoline the kingdom was producing.
Crude output from the Khurais field is now at 1.3 million barrels per day (bpd).
Oil output is at about 4.9 million bpd in the Abqaiq plant, up from 3 million bpd on Monday.
India's MRPL sold 35,000 tonnes of naphtha for Oct. 8-10 loading from New Mangalore on late Tuesday to Emirates National Oil Company (ENOC) at premiums close to $25 a tonne to Middle East quotes on a free-on-board (FOB) basis.
Not only was this double the premium it had fetched for a cargo sold to ENOC recently for Sept. 26-28 loading, but it was also the highest premium MRPL has fetched for any of its naphtha cargoes since June 2018, Reuters data showed. Asia's gasoline crack dived 16.3% to $6.60 a barrel, the lowest since September 10.