Buying crude oil from Russia allows China to ensure security of supply as cooperation between the two countries is likely "to gain new momentum," China National Petroleum Corp. Chairman Wang Yilin said Friday.

Russia can increase its oil production to as much as 700 million tonnes of oil per year (14 million barrels of oil per day) and export 300 billion cubic meters of gas to China annually, Rosneft Chief Executive Igor Sechin said on Friday.

Rosneft and Indian ONGC Videsh Limited during the Eastern Economic Forum signed the agreement of sale and purchase of 15% in Vankorneft and shareholders agreement in regard of the enterprise management. The document was signed by the Chairman of Rosneft Management Board Igor Sechin and Managing Director of ONGC Videsh Limited Narendra Verma.

Oil prices fell more than 7 percent on concerns about global demand for petroleum, reversing a three-day rally that had pushed U.S. crude up 27.5 percent.

‘Magadanmorneftegaz, Lisyanskmorneftegaz (joint ventures of Rosneft and Statoil) and China Oilfield Services Limited (COSL) signed a contract to drill two exploration wells in 2016. The wells will be drilled in the Magadan-1 and Lisyansky areas of the Okhotsk Sea’ Rosneft wrote on Wednesday.

China, the world's second-biggest oil consumer, has already begun to loosen its grip on the physical oil sector this year by granting quotas for imported crude to privately-owned refiners for the first time, surprising market participants with the speed of reform.

Oil prices have rocketed more than 25 per cent in three trading sessions, with the latest boost coming from data on US production and vague hints of a change of thinking inside the Opec producers’ cartel.

“Today’s continuing pressure on prices, brought about by higher crude production, coupled with market speculation, remains a cause for concern for OPEC and its members—indeed for all stakeholders in the industry,” the commentary in the latest OPEC Bulletin said.

Supplies outside OPEC are expected to contract in 2016 for the first time since 2008, sliding by 200,000 barrels a day, according to the International Energy Agency. With consumption set to grow by 1.4 million barrels a day, OPEC and its de facto leader Saudi Arabia could seize the chance to broaden their market as competitors damaged by the price slump fall off.

"It's quite possible that if oil prices remain at the low levels for long, oil production could decline, as had been the case before. Anyway, we don't expect any significant cuts,"

EIA estimates U.S. crude oil production in June 2015 at 9.3 million barrels per day (b/d), a decrease of approximately 100,000 b/d from the revised May 2015 figure. Production estimates released in the PSM for January through May were revised downward by 40,000 b/d to 130,000 b/d. The largest revisions in volume include decreases of oil production in Texas (ranging from about 100,000 b/d to 150,000 b/d) and increases in the federal Gulf of Mexico (ranging from about 10,000 b/d to 50,000 b/d). U.S. crude oil production for the first six months of 2015 averaged 9.4 million b/d.

"We cut our real GDP outlook... to take into account a weaker-than-expected second quarter, a deteriorating global emerging market outlook, and our oil price revisions,"

At a time when the oil price is languishing at its lowest level in six years, producers need to find half a trillion dollars to repay debt.

Russian oil firms are increasing their rouble profits and raising production as a weak currency protects their business, which has turned into one of the world's most profitable.

U.S. Rig Count is down 8 rigs from last week to 877, with oil rigs up 1 at 675, gas rigs down 9 to 202, and miscellaneous rigs unchanged at 0.