石油矿场机械
石油礦場機械
석유광장궤계
Oil Field Equipment
2015年
9期
82-85
,共4页
王甲昌%单锋%张日兴%国华%肖志高
王甲昌%單鋒%張日興%國華%肖誌高
왕갑창%단봉%장일흥%국화%초지고
碳酸盐岩%浮阀%自衡式单流阀
碳痠鹽巖%浮閥%自衡式單流閥
탄산염암%부벌%자형식단류벌
carbonate formation%floating valve%self-equilibrating check valve
钻完井作业使用的浮阀存在寿命短、失效率较高等问题。研制了自衡式单流阀,采用滑套与凸轮驱动连接、阀片向滑套内壁贴合、氟胶和软金属组合密封的设计。减少了密封面冲刷失效的几率;解决了低、高压状态下密封的稳定性与抗高温性。室内模拟试验及现场应用结果表明:该单流阀开、关及时,密封良好,性能稳定,在井下各种倾角状态下可以置于完井管柱的任何位置,满足碳酸盐岩超深水平井完井管柱配置、压裂、酸化等的施工要求。
鑽完井作業使用的浮閥存在壽命短、失效率較高等問題。研製瞭自衡式單流閥,採用滑套與凸輪驅動連接、閥片嚮滑套內壁貼閤、氟膠和軟金屬組閤密封的設計。減少瞭密封麵遲刷失效的幾率;解決瞭低、高壓狀態下密封的穩定性與抗高溫性。室內模擬試驗及現場應用結果錶明:該單流閥開、關及時,密封良好,性能穩定,在井下各種傾角狀態下可以置于完井管柱的任何位置,滿足碳痠鹽巖超深水平井完井管柱配置、壓裂、痠化等的施工要求。
찬완정작업사용적부벌존재수명단、실효솔교고등문제。연제료자형식단류벌,채용활투여철륜구동련접、벌편향활투내벽첩합、불효화연금속조합밀봉적설계。감소료밀봉면충쇄실효적궤솔;해결료저、고압상태하밀봉적은정성여항고온성。실내모의시험급현장응용결과표명:해단류벌개、관급시,밀봉량호,성능은정,재정하각충경각상태하가이치우완정관주적임하위치,만족탄산염암초심수평정완정관주배치、압렬、산화등적시공요구。
The existing floating valves used in well-completion operation have some drawbacks such as short lifetime,high failure rate and etc.Therefore,a kind of self-equilibrating check valve is developed.This kind of self-equilibrating check valve is mainly composed by switching valve, valve seat,flapper and sleeve.The unique design are featured by the connection of sliding sleeve and cam driving gear,flapper jointing towards inner wall of sleeve,and the combination of fluoro rubber seal and soft metal seal.The new design reduces the ratio of seal failure caused by wash-ing,solved sealing stability in both low and high pressure and high-temperature resistance prob-lems.The laboratory simulation test and field applications show that this new check valve can switch without delay,seal well,more stable than that of conventional check valve,work well in different angle in downhole condition and could be installed at any position on completion string. This new check valve satisfied the requirement for horizontal completion string design,fracturing, acidizing and other relevant stimulation operations in deep carbonate reservoir.