The medium - and long-term development direction of enterprise transformation is to turn oil fields into hot fields and realize "triple supply" from oil and gas enterprises to oil and gas, heat and power supply.
After decades of development, the old oilfields in China have generally entered the middle and later stage, and the decline in the grade of newly added reserves and the rise in development cost have become common characteristics, thus accelerating the development and transformation of old oilfields has become a top priority.Specific to the path of transformation, on the one hand, we should make good use of the remaining oil and gas resources through technological progress, activate the reserves that are difficult to use, and continue to contribute oil and gas energy to the country and society.On the other hand, the existing resources and technical advantages should be brought into play to support the development of new non-oil and gas businesses.Among them, the development of oil field geothermal and waste heat has become an important development field.
Abundant geothermal resources are available in the oil field, which is the basis of transformation and development.According to the estimation of domestic geological experts, the main heat storage and power generation capacity of daqing, liaohe, north China, shengli, zhongyuan and henan oil fields can reach 3000MW, and the geothermal resources within 10 kilometers of the main oil zones in China are equivalent to 1.8 trillion tons of oil equivalent.The utilization of waste heat is one of the important methods to reduce cost and increase efficiency.In 2018, China's crude oil production was about 190 million tons, and the total produced water from oil fields was about 1.7 billion tons based on the 90% water content of oil Wells.According to the calculation of relevant experts, if the temperature difference of 10℃ is used, the waste heat resource can be equivalent to 2.4 million tons of standard coal.If this part of waste heat can be recycled and used for oil-field heat tracing oil transfer, it can replace a large amount of natural gas, which is an important attempt to save energy, reduce emissions and reduce costs in the oil field.
The successful cases of domestic and foreign oil fields relying on their own advantages to develop and utilize geothermal energy provide a warning for the transformation.TeapotDome oilfield in the United States in September 2008 a successful oil field of geothermal power generation project, project operation first annual output reached 586 MWH.Domestic shengli, north China, liaohe, jianghan, jidong and other oil fields have carried out a large number of geothermal energy development, geothermal has become an important force to support the economic development of the old oil and gas areas.In addition, domestic oil and gas field related institutions are also actively exploring the field geothermal power generation path, oilfield geothermal power generation is expected to be the future oil and gas field transformation and development of another point.
The medium - and long-term development direction of enterprise transformation is to turn oil fields into hot fields and realize "triple supply" from oil and gas enterprises to oil and gas, heat and power supply.The strategy of revolution in energy production and consumption makes a systematic plan for China's energy development in the future, and the proportion of non-fossil energy in primary energy will reach 20% by 2020 and 30% by 2030.According to the current development situation, the transformation of the old oil and gas field has become the most important thing concerning the oil and gas field itself and the regional economic development.Specific to the implementation path, the following aspects can be considered.
Combine oil field heat utilization with clean heating in northern China.Most of the main oil and gas fields in China are located in heating areas in north China or areas with hot summer and cold winter.Relying on the advantages of engineering technology, accelerate the development of geothermal resources in the region;At the same time, through technological transformation and infrastructure construction, we will make full use of the abandoned Wells as soon as possible, develop heating business for ourselves and diverse customers from the regional market, and strive to become a leader in supporting the action plan of blue sky protection and the geothermal project of coal transformation.
The development and utilization of oilfield geothermal energy are combined with the development of distributed energy.Because distributed energy has the characteristics of flexible energy supply and meeting individual demand, the economy of centralized energy supply is gradually showing in the change of policy and development mode.The basic feature of distributed energy is the emphasis on multiple power supply, which reflects the electrical language.Since the oil field has abundant geothermal resources, the development and transformation in the future should fully combine the development and utilization of geothermal with the development and utilization of wind and solar energy, so as to realize the combined power supply and micro-grid.At present, many domestic oilfields have made successful practices and cases in this field.
From the perspective of actual development conditions, it is not realistic for oilfield transformation to completely change from oil and gas field resources, after all, the capacity of external market is limited.The realistic way still needs to be based on the resources and conditions of the oilfield itself and to seek new development opportunities through resource integration.Although the concept of oilfield hot field has a history, it is not outdated.