大庆石油地质与开发2018，Vol.37Issue(3)：163-167,5.DOI:10.19597/J.ISSN.1000-3754.201801005
致密油体积压裂水平井CO2吞吐实践与认识
PRACTICE AND UNDERSTANDING OF THE CO2 HUFF-PUFF FOR THE VOLUME FRACTURED HORIZONTAL WELL IN TIGHT OIL RESERVOIRS
摘要
Abstract
For the problem of the low recovery factor for tight-oil volume fractured horizontal wells in the elastic development,using the laboratory experiments and numerical simulation method,referred by the oil incremental amount and oil change rate evaluations,integrated with the horizontal well data,the parameters such as the huff-puff opportunity,injection volume,injection rate and so on were optimized.With the help of the optimized parameters of the CO2 huff-puff,Well YP1-7 was selected to operate the field test.The well was totally injected 9 900 t CO2,the initial increase of the oil was up to 17.4 t,the effect was pretty obvious.The study shows that the fracturing was characterized by the huge volume and complex fractures,the mixed phase could not be realized in the huff-puff process;the increasing expansion and reducing viscosity are the main acting factors for the incremental production of the CO2 huff-puff in Fuyu tight oil reservoir.The technique possesses much better adaptability in the development of Fuyu tight oil reservoir,so it can be the effective method of enhancing the recovery of the tight oil reservoir.关键词
致密油/水平井/体积压裂/CO2吞吐/精细地质建模Key words
tight oil/horizontal well/volume fracturing/CO2 huff-puff/fine geological modeling分类
能源科技引用本文复制引用
侯广..致密油体积压裂水平井CO2吞吐实践与认识[J].大庆石油地质与开发,2018,37(3):163-167,5.基金项目
国家科技重大专项“松辽盆地致密油开发示范工程”(2017ZX05071). （2017ZX05071）
