特种油气藏2017，Vol.24Issue(3)：135-139,5.DOI:10.3969/j.issn.1006-6535.2017.03.026
临兴致密气藏压裂水锁伤害评价与措施优化
Assessment of Water Block Damage during Fracturing of Tight Gas Reservoir in Linxing Area and Optimization of Relevant Countermeasures
摘要
Abstract
With consideration to problems related to water block damage in Linxing tight gas reservoirs, water phase trapping index method and total water volume method have been used for assessment over water block damage in layers with fracturing operations in the study area.By using the theoretical model with consideration to the start-up pressure, theoretical volume of quantity of liquid nitrogen can be determined.In addition, correlation between quantity of liquid nitrogen and post-fracturing productivity has been determined.In this way, proper measures for removal of water blocking can be optimized.Research results show: multiple layers within the Linxing Area may involve water blocking risks;Sufficient quantity of liquid nitrogen shall be deployed in layers susceptible to water blocking or critical water blocking to minimize impacts of such water blocking.It was proposed to use 4.0-5.0 as empirical coefficients for quantity of liquid nitrogen in the Linxing Area.Relevant researches may provide reliable foundation for researches related to optimization of suitable measures for removal of water blocking during fracturing of tight gas reservoirs in the Linxing Area.关键词
致密砂岩气/水锁伤害/水相圈闭指数法/总水体积法/液氮伴注压裂Key words
tight sandstone gas/water block damage/water phase trapping index method/total water volume method/fracturing operation with association of liquid nitrogen injected分类
能源科技引用本文复制引用
程宇雄,彭成勇,周建良,张滨海..临兴致密气藏压裂水锁伤害评价与措施优化[J].特种油气藏,2017,24(3):135-139,5.基金项目
国家科技重大专项"东海深层低渗-致密天然气勘探开发技术"(2016ZX05027) （2016ZX05027）
中国海洋石油有限公司综合科研项目"临兴-神府致密气压裂裂缝形态研究"(2016-KJZC-004) （2016-KJZC-004）
