The Steam Displacement Law And Technology Strategies In The Middle-deep Layer Heavy Oil Reservoir Of Liaohe Oil Field

Liaohe oil field is rich in heavy oil resources, which is exploited mainly by means of the steam stimulation. The old liberated areas of heavy oil are showing degressive tendency since 2006, leading to production decline was mainly due to the new liberated areas which has a poor production. The capacity of the old liberated area is a big proportion, but the old districts recovery high, widely used steam stimulation method, due to its exploitation of the mechanism The specificity, resulting in multi-cycle throughput dropped significantly after the reservoir pressure, lower oil production cycle, cycle oil and gas close to the economy than the limit, stable difficult. Therefore, developing methods of conversion is particularly important to succeed.Since the "seven five Plan" , the Liaohe oil field has carried out various conversion methods (steam flooding, steam slug flooding, water flooding, immiscible flooding, fire flooding) of the pilot test of 18, in the deep heavy oil reservoirs conversion mode test, the steam flooding Youyu adaptability reservoir, reservoir and process technology and so is relatively mature, well test results, in the same type of reservoir in Deyi way to convert large-scale application, especially in the Qi 40 turn the whole block size drive, steam drive well set to reach 149 to achieve a homogeneous group of 40 industrialized steam drive well implemented.In this paper, Liaohe Oil Field is tested specifically for the steam flooding which had carried out quickly ,selecting typical representatives of the effectiveness evaluation, from design, process conditions to the adjustment measures, sum up useful experience , the lesson failing. Since then, the focus of the Liaohe Oilfield in 1998, carried out in homogeneous 40 and the expansion of the steam drive pilot test, begun in 2006 Qi 40 turn drive the dynamic development of the overall evaluation of results. Main research contents: 1, Qi 40 Laws of steam flooding; 2, Qi 40 steam-driven with a degree evaluation; 3, Qi 40 steam flooding technology countermeasures. In this study, using steam flooding of Division Technology, no test wells oil vapor absorbing capacity prediction, three-dimensional remaining oil distribution technology, steam flooding Houqi comprehensive adjustment technology, steam flooding Zongxiangdongyong Chengdu comprehensive analysis of France Deng Duoxiangchuangxin technology. In the remaining oil, based on the views put forward a corresponding adjustment.The steam drive production in Qi 40 of the Liaohe oil field is in deep heavy oil reservoir steam drive production model, the displacement of system rules and technical measures for the type of reservoir summary provided for production of steam flooding can learn a valuable asset.