论文部分内容阅读
油田开发后期，注水开发成为主要手段。注水的核心问题是提高差油层的吸水能力。中高渗透层与低渗透层对注水水质的要求不同。必须对以中高渗透层为主要依据设计的地面注水管网进行改造。对杏北四、五、六地区注水管网状况进行了调查，提出４种改造方案。采用现代化管理方法中的决策树法进行论证，兼顾现场实际状况，充分利用现有管网，切合实际进行调整，并依据“少投入，多产出”的原则，减少施工工程量。该技术的实施提高了杏北四、五、六面积地区注水效果，使这一地区水驱油能力增强，提高了油井沉没度，使油井充分发挥潜力，为杏北油田形成分质、分压注水创造了条件。这一工程投产后，运行状况良好，为国家节省投资，同时年创纯经济效益达 １０８．６万元。
Late development of oil fields, water injection development has become the main means. The core problem of water injection is to increase the water absorption capacity of the poor reservoir. Medium and high permeability layer and low permeability water quality requirements of different. It is necessary to reform the ground water injection pipe network designed on the basis of medium and high permeable layers. Investigation of waterflooding network in the fourth, fifth and sixth districts of Xingbei, and four kinds of reconstruction schemes are put forward. The method of decision tree in modern management method is used to demonstrate, taking into account the actual situation on site, make full use of the existing pipe network, make adjustments according to the actual conditions, and reduce the construction quantity according to the principle of “less investment, more output”. The implementation of this technology improved the water injection effect in the areas of 4, 5 and 6 in the northern part of Apricot so as to enhance the capability of water flooding in this area and improve the submergence degree of the oil well so as to make the oil well fully develop its potential for the formation of sub-quality and partial pressure Water has created the conditions. After the project was put into operation, the project was in good working condition and saved investment for the country. At the same time, the annual net economic profit reached 1,086,000 yuan.