摘要
中原油田的地质特点决定了水力压裂是低渗透油气藏勘探开发的主导措施,对于低压、水敏油气藏及深层凝析气藏采用常规的压裂工艺及水基压裂液进行压裂改造,增产效果不甚理想。为了解决压裂中存在的问题,探索压裂增产的新途径,中原油田引进了美国SS公司生产的CO2罐车和CO2增压泵,与斯伦贝谢公司进行合作,完成了CO2压裂地面流程的配套和泵注CO2压裂车的改造。在斯伦贝谢公司技术人员的指导下,进行了5口井的CO2压裂实施。在此基础上,我们总结了前期工作的经验和教训,独自完成了5口井的CO泡沫压裂的设计与施工,取得初步成效。
Hydraulic fracturing is the major measure of exploration and production for low permeable reservoirs, which is decided by the geological characteristics of Zhongyuan oil field. The production increasing is not ideal for the low-pressure and water-sensitive reservoirs and the deep condensate gas reservoirs to use the conventional fracturing techniques and the water-base fracturing fluid for stimulation. To solve the problems, new ways are explored. Zhongyuan oil field imports the CO_2 tank truck and CO_2 boosting pumps made by American SS Com.. Cooperating with Schlumberger, it is completed to equip the surface workflow of CO_2 fracturing and modify the fracturing trucks of CO_2 injected by pumps. Under the guide of Schlumberger technicians, the jobs of CO_2 fracturing are conducted for 5 wells. On basis of the jobs, we sum the experiences and lessons of the previous jobs, complete the design and operation of CO_2 foam fracturing for 5 wells independently and achieve preliminary success.
出处
《天然气勘探与开发》
2005年第2期27-31,i003,共6页
Natural Gas Exploration and Development
