摘要
洛带气田为低渗透砂岩气藏 ,水力压裂改造是气田投入工业化开采的关键技术 ,而气田不利的地质特征给水力压裂改造提出了严峻的挑战。文章从地应力场特征、压裂液性能优化、压裂工艺技术特点和增产效果分析入手 ,对洛带气田压裂工艺技术取得的新进展作了详细论述和归纳总结 ,提出以减小入地液量、低排量控制缝高、强化压裂液综合性能和提高返排效果为主要手段的 ,以“低前置液、小排量、中等砂比、强化返排”为对策的压裂施工工艺 ,在压裂改造中大幅度提高了单井产量和工业气井建成率 ,取得了比较好的技术经济效益 。
Luodai gas field is a sand gas reservoir with low permeability. The hydraulic fracturing is the key technique for commercial production of the gas field. But the unfavorable geologic features bring the severe challenge to the hydraulic fracturing of the gas field. Based on the features of the reservoir stress field, the property of the fracturing fluid, the fracturing techniques and the results of production increase, the article described and summed the new advance of fracturing techniques in Luodai gas field. Also, the article suggested to take the measures to decrease the fluid volume entering the reservoir,control the fractures heights by low flow rate, strengthen the integrated properties of the fracturing fluid and improve the results of the backflow. Using the fracturing techniques of 'Less ahead Fluid, Small flow rate, Medium sand ratio and Strong backflow', the production and success rate of fracturing has been improved greatly, and good economic benefits have been obtained. The experience provides references for gas fields to develop fracturing techniques.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2003年第3期63-66,共4页
Natural Gas Industry
