特种油气藏2017，Vol.24Issue(5)：165-169,5.DOI:10.3969/j.issn.1006-6535.2017.05.031
勺形水平井在四川长宁页岩气 开发中的应用
Application of Spoon-shaped Horizontal Wells for Development of Shale Gas in Changning,Sichuan
摘要
Abstract
With development of shale gas development in Changning,Sichuan entered new stages,problems related to under-development of reservoirs directly underneath the derrick for cluster horizontal wells become more out-standing. Incapability of conventional horizontal wells may present significant obstacles for high-efficiency develop-ment of shale gas in Channing. In fact,spoon-shaped horizontal wells are considered effective solution to remove such obstacles. By studying technical principles for spoon-shaped horizontal wells,spoon-shaped horizontal wells for shale gas development have been designed in accordance with specific geologic conditions in the Channing Area. In addition,performances of such wells have been analyzed in accordance with test data in the Well CN-S,the first spoon-shaped horizontal well drilled in the Channing Block. Analysis results show the spoon-shaped horizontal well may prolong the horizontal interval for approximately 300m by extend the target point through reversed displacement. In this way,the area with no gas development underneath the derrick can be reduced to 30 m×800 m to enhance the development area for approximately 95%;With low friction resistances in drilling (with measured friction resist-ance in drilling of 10-15 kN,bit tripping-out resistance of 5-10kN and production casing tripping-in resistance of 15-20 kN),casing pipes can be installed freely. Test results show the spoon-shaped horizontal wells can be de-ployed for shale gas development in the Channing Area to enhance development efficiencies of reservoirs and to cut drilling cost. In conclusion,application of spoon-shaped horizontal wells can effectively promote high-efficiency development of shale gas with satisfactory economic performances.关键词
勺形水平井/死气区/储层动用/页岩气/四川长宁Key words
spoon-shaped horizontal well/area with under-developed gas/development of reservoir formations/shale gas/Changning/Sichuan分类
能源科技引用本文复制引用
孟鐾桥,周柏年,付志,谷翠琳,阳强..勺形水平井在四川长宁页岩气 开发中的应用[J].特种油气藏,2017,24(5):165-169,5.基金项目
国家科技重大专项"长宁—威远页岩气开发示范工程"(2016ZX05062) （2016ZX05062）
