China's foreign oil dependence rises rapidly in recent years and it has been close to nearly 60% in 2014. Excessive dependence on foreign oil could bring potential risks for the energy security of our country. However, according to the International Energy Agency’s forecast, China's foreign oil dependence would reach 80% in 2040！
“Excessive dependence on foreign oil and gas could bring potential security risks for the energy supply of our country” says by Hao Duan, founder of ZFA Technologies Inc., the main problems facing the oil industry in China are “production, oil recovery technology, oil recovery rate, production cost and environmental protection ”, “BERO biosurfactant Enzyme is one of the most effective ways to solve these problems”.
Hao Duan says that there are two effective ways to ease the increasingly outstanding contradiction between the oil supply and demand in our country：one is to search new reserves; the other is to enhance the recovery of existing geological reserves. BERO Biosurfactant, developed independently by ZFA Technologies Inc., is a great way to enhance oil recovery. And it could be used in the tertiary oil recovery in oilfield to increase production by BERO biosurfactant enzyme technology.
According to the introduction, through 8 years’ production and research updates and pilot experiments including commercial development and experiments conducted on 11 oilfields, more than 200 low-production wells in China as well as Texas and Wyoming in America, with success ratio above 90%, average annual increased production per well 1000 bbls, average annual production increase rate above 120%, effective time above 12 months.
Oilfields of our country are mainly distributed in continental sedimentary basin, and both changes of reservoir physical properties and the distribution of sand bodies are complex, with not only high clay content, but also high wax and high viscosity of crude oil, which increase the difficulty of oilfield development in China. And the oil recovery rate in China can only exploit 28% ~ 35% geological reserves under the current technology level. 65%～72% recoverable reserves remain under the ground.
In addition, the national onshore oilfield has entered into high water cut stage with water cut as high as 82% in recent years in China. Oil-water separation and sewage recycle greatly increase the energy consumption, which make oil production cost rise to almost no profit and force part of mature oilfields have to reduce production.
Therefore it becomes the problem in need of urgent solution for the sustainable development of China's oil industry that how to enhance oil recovery in order to increase recoverable reserves and extend production plateau of oil well.
The average annual production increase rate of “BERO Biosurfactant” is above 120%,and the highest production increase record is that a well of the Second Oil Production Plant in Karamay Oilfield, the highest daily production is 12 times as high as the previous production, annual increase 1,969 T(14,177 bbl) with the average annual increase rate 540%.
After being injected into a well, “BERO Biosurfactant” can rapidly strip wax and asphalt crystallized and accumulated on rock particles in the area of a reservoir close to well and part of BERO adheres to rock surface to make the wettability of the rock become water-wetting, lower the flowing resistance of crude oil in formation voids, thus releasing crude oil from rock particle surface and being separated out from micropores. BERO molecules entering into water can be transported to the area further than the surrounding area of sandstone formation and form new oil outlet passages in sandstone formation so as to clean production well in oil reservoir, plugging removal and injection reduction of water injection well, plugging removal and stimulation, displacement and improving oil recovery rate.
Put simply, crude oil could be easier to recover after cleaning treatment on oil reservoir by BERO biosurfactant.
Compared with other oil extraction methods, MEOR (microbial enhanced oil recovery) has its incomparable advantage, which is environmental friendly. Polymer flooding technology, in the chemical flooding area, has higher performance price ratio. But it has highly toxic pollution to soil and water resource. While BERO biosurfactant is got by microbial fermentation through high temperature, its composition is protein enzyme. “ It belongs to MEOR, and it’s only a catalyst to transform bacteria to protein, non - toxic and pollution-free” says by Hao Duan.
The technology of“BERO Biosurfactant” of ZFA Technologies Inc. is quite popular in foreign market. And ZFA has signed several commercial contracts in America after the successful test in Wyoming. Besides, ZFA has increased some partners abroad through word-of-mouth effect because of obvious effect.
Now the clients of ZFA Technologies Inc. include European listed oil companies, American independent oil developers, as well as Petroliam Nasional Bhd etc. But apparently Hao Duan does not rest here. He wants to promote this technology in China.
“In terms of market acceptance, it’s much easier to promote in America than in China.” says by Hao Duan. And that’s the reason why he chose American market initially. But instead he begins to increase the promotion in domestic market as with the technology’s successful promotion in American market. Hao Duan says as oil is in great demand in China, too high foreign dependence on oil is not conducive to long-term development while nonstandard over-exploitation has considerable damage to the environment, so he must bring this good technology back to enable our country to achieve energy independence and be self - sufficient in oil in the future.
“We have R & D department in Suzhou City, and the primary laboratory in Suzhou has the small-scale production of 500T in and we will set up a plant later with annual production of 5000 T, which is enough to support us for 5000 oil wells stimulation in such scale.” Hao Duan expresses that it’s ZFA’s development direction over the next few years to shift the R&D focus to China and increase the investment in China.
At present, ZFA Technologies Inc. has conducted a wide range of technological test as well as stimulation cooperation with Daqing Oilfield, Jilin Oilfield, Karamay Oilfield, Nanyang Oilfield, Zhongyuan Oilfield, Qinghai Oilfield, Yanchang Oilfield etc. in China. Now it has achieved obvious economic benefits and social benefits, won the extensive recognition and praise of customers in various oilfields.