China Petroleum News (Reporter Zhang Yunpu and Liu Xiangfei) On April 30th, Daqing Oilfield No. 1 Oil Factory No. 1 old oilfield redevelopment project demonstration area completed 949 drillings and 1,614 infrastructure projects. The water drive fine-tuning demonstration area is progressing according to plan. The yield is approaching 60%. At the same time, in the recovery and recovery research institute of Daqing Oilfield, the deputy chief engineer Wu Xiaolin and the tertiary oil recovery research team have stepped up efforts to increase the recovery rate of Daqing oilfield for longer term.
Jiang Jiemin, general manager of the group, pointed out during the investigation of Daqing Oilfield that the achievement of 40 million tons of crude oil continued to be stable and that Changshou was the main body. The implementation of the Changchun secondary development project should be the starting point, and the adjustment of well pattern and layer system should be adopted to make the water flooding. The proportion of production reached more than 60%, and efforts should be made to move towards the goal of recovery of more than 60%; the technology of triple-component flooding should be matured as soon as possible and become a strategic reserve technology; the technology of enhanced oil recovery after polymer flooding must be accelerated to make it easier to 40 million tons of crude oil continued to play an important role in the steady production.
In order to increase oil recovery, Daqing Oilfield will use water to drive production, base on the current potential of deep water flooding, ensure the achievement of two goals of 60% of water drive production and 60% of oil recovery, and tackle the “three mining†problem. Focus on the long-term, ahead of research and reserve three times oil recovery technology.
In the annual output of 40 million tons of crude oil in Daqing Oilfield, more than two-thirds of the output is water flooding. Daqing Oilfield has firmly grasped the main line of water drive and made full water flooding. Changshui Water Drive insisted on the basic work of stabilizing oil and water, conducted in-depth investigations on underground conditions, made detailed descriptions of fine reservoirs, fine adjustment of injection and production relationships, fine tapping of water injection systems, and fine daily production management of “four fine†jobs. The degree of water drive is used to dig deep into the remaining oil potential, stabilize and increase the daily output of a single well.
Daqing No. 1 Plant of Oil Production confirmed the task of maintaining crude oil output of 11.11 million tons of crude oil by 2012. The plant has established a fine demonstration area for water flooding and implemented a "one piece of a policy" and "one well and one method" to implement the "one well project" and "water flooding and tapping potential experiment", and the water flooding encryption will increase the recovery rate by more than 6 percentage points. The rate of increase of water content is controlled within 0.4%.
Daqing No. 2 Production Plant has set up a well-developed submarine demonstration area for water drilling in the south eight districts of wells and reservoirs. It has applied various means and mature supporting technologies to develop fine water flooding to improve the utilization of oil layers, and to control the decline in production and the rise in water cut. , to ensure that the three-year output is hard and stable.
At present, the tertiary oil recovery technology in Daqing Oilfield leads the world and has established the world's largest tertiary oil recovery base. The annual output of “three minings†exceeds 10 million tons and the cumulative oil production is over 100 million tons. However, the reality facing Daqing is that there are many uncertainties in increasing the production of polymer flooding on a large scale. Currently, triple-component flooding technology has high investment and cost, and some blocks cannot be widely promoted.
Facing the complicated and stable production situation, the leaders of Daqing Oilfield have profoundly realized that in the next 3 to 5 years, the development of science and technology in Daqing Oilfield will be crucial. We must firmly grasp this critical period and pool the power of the entire oil field. Focus on teamwork, focus on investment, focus on energy, and concentrate on research and development. With the lowest cost, the shortest time, and the fastest speed, we can make a good fight for the sustainable development of the oilfields and achieve the third oil recovery and enhanced oil recovery. New breakthroughs in technology.
Daqing Oil Field is determined to go all out to play this technology battle. For major key technologies for enhanced oil recovery by tertiary oil recovery, the oilfield will establish a large project department, and the company’s leaders or relevant experts will serve as project team leaders, and assign special personnel to take charge of project research work to further increase scientific research efforts and accelerate research and development. According to the maturity of technology, the company plans to promote the technology and research of enhanced oil recovery technologies at different levels and levels, focusing on the promotion of polymer flooding, improving the strong alkali ternary, exploiting weak bases and alkali-free, and exploring other enhanced oil recovery technologies to ensure major bottlenecks; Substantial breakthrough was made at the earliest possible technical breakthroughs to provide strong support for the steady production of crude oil.
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