CAJ | 학술논문

投球式滑套为裸眼分段压裂管柱中建立压裂级数和压裂过流通道的关键部件，但目前国内尚未开展滑套球座与其匹配的憋压球的密封能力、滑套球座的可钻性与耐冲蚀性方面的研究。通过滑套球座的结构设计、憋压球的材料优选及球座与憋压球密封能力的有限元分析与试验，研究了滑套球座与憋压球之间的密封技术；通过滑套球座材料优选和相关试验，研究了滑套球座的可钻性；通过滑套球座表面硬化处理探讨及冲蚀和密封试验，研究了其耐冲蚀性能。8井次共72段的现场试验表明，滑套设计合理，性能可靠，解决了投球式滑套高承压密封及完井管柱的全通径问题。
투구식활투위라안분단압렬관주중건립압렬급수화압렬과류통도적관건부건，단목전국내상미개전활투구좌여기필배적별압구적밀봉능력、활투구좌적가찬성여내충식성방면적연구。통과활투구좌적결구설계、별압구적재료우선급구좌여별압구밀봉능력적유한원분석여시험，연구료활투구좌여별압구지간적밀봉기술；통과활투구좌재료우선화상관시험，연구료활투구좌적가찬성；통과활투구좌표면경화처리탐토급충식화밀봉시험，연구료기내충식성능。8정차공72단적현장시험표명，활투설계합리，성능가고，해결료투구식활투고승압밀봉급완정관주적전통경문제。
Ball-activated sleeve plays an important role in open hole staged fracturing ,w hich may deter-mine number of fracturing stages and flow channels .However ,studies have not been initiated in China on sealability between ball and ball seat ,drillability and erosion resistance of ball seat .In this paper ,finite ele-ment analysis and experiment were conducted in respect to structural design of ball seat ,selection of ball materials ,and sealability betw een ball and ball seat ,so as to find appropriate sealing techniques .Optimiza-tion of ball materials and relevant tests were made to identify the drillability of ball seat .Additionally ,sur-face hardening of ball seat was discussed ,together with corrosion and sealing experiments ,to analyze the corrosion resistance of the ball seat .This ball-activated sleeve technique was applied in 8 wells in 72 fractu-ring stages ,proving that it was reasonable and reliable ,and could be effectively used for sealing under high pressure and entire drifting of completion string .