低压气井泡沫压井液体系的构建及应用  

Construction and application of foam well killing fluid system in low pressure gas well

作　　者：张赫 ZHANG He(Petroleum Engineering Environmental Technology Research Institute,SINOPEC Northeast Oil&Gas Branch,Changchun 130062,China)

机构地区：[1]中国石化东北油气分公司石油工程环保技术研究院,吉林长春130062

出　　处：《精细石油化工进展》2023年第6期18-25,共8页Advances in Fine Petrochemicals

摘　　要：伏龙泉地区气田由于长时间开发,目前已进入低产低压阶段。为保证气井稳产,需要采取修井等措施。对于低压气井,常规压井液中的固液相物质会侵入到产层,对储层形成一定的伤害,压后产能难以恢复。对泡沫发生剂、稳定剂和降滤失剂实施优选,构建密度低、漏失量小的泡沫压井液体系。结果表明:配制得到密度稳定在0.7 g/cm^(3)的低密度压井液体系,耐温120℃,体系均一,稳定时间达到24 h。现场应用能够满足生产要求,并达到储层保护的目的。Most of gas fields in Fulongquan Area have entered the stage of low production and low pressure due to long time development.In order to ensure the steady production of gas well,it is necessary to take mea-sures in well workover.For low-pressure gas wells,the solid and liquid phase in the conventional well killing fluid will invade into the production zone,causing damage to the reservoir,and it was difficult to recover the productivity.Therefore,the research on low-density well killing fluid system was carried out.The low density well killing fluid system was constructed by optimizing foam producer,stabilizer and fluid loss reducer.Re-sults showed that a low-density killing liquid system with a density of 0.7 g/cm^(3) withstanding 120℃ was con-structed.And the system was uniform.The stability time was up to 24 hours.The kllfluid was used in a gas well to meet production requirements and protect the reservoir.

关 键 词：低压气井 低密度泡沫压井液 储层保护 发泡剂 降滤失剂 

分 类 号：TE377[石油与天然气工程—油气田开发工程]