本文選題：球座 + 打撈機構　； 參考：《石油鉆探技術》2017年04期

【摘要】：球座可提出式全通徑滑套可通過球座打撈機構將各級球座一次提出井口,實現管內全通徑,要求球座打撈機構軸向插入載荷小,承載能力強。為此,設計了新型高承載球座打撈機構,采用理論計算和有限元分析方法,分析了齒根面錐度和承載面角度對軸向插入載荷和承載能力的影響規(guī)律,并確定了最優(yōu)參數。分析結果表明,與常規(guī)球座打撈機構相比,新型高承載球座打撈機構軸向插入載荷降低了75%,當齒根錐度為1∶16時,軸向插入載荷約為2kN,軸向極限抗拉強度達到500kN。當承載面角度小于90°時,隨著齒根錐度增大,球座打撈機構的軸向承拉能力隨之增強,軸向插入載荷隨之降低。高承載球座打撈機構模擬入井試驗一次打撈成功,表明高承載球座打撈機構能滿足現場應用要求,為提高球座打撈成功率提供了新的技術途徑。
[Abstract]:The ball pedestal can be raised with a full diameter slider and can be raised to the wellhead at one time by the ball pedestal fishing mechanism to realize the full diameter in the pipe. The axial insertion load and the bearing capacity of the ball seat fishing mechanism are required to be small and the bearing capacity is strong. For this reason, a new type of high bearing spherical seat fishing mechanism is designed. The influence of tooth taper and bearing surface angle on axial insertion load and bearing capacity is analyzed by theoretical calculation and finite element analysis, and the optimum parameters are determined. The results show that the axial insertion load of the new type of high bearing spherical seat fishing mechanism is reduced by 75% compared with the conventional spherical seat fishing mechanism. When the tooth taper is 1:16, the axial insertion load is about 2 KN and the axial ultimate tensile strength is 500 KN. When the bearing surface angle is less than 90 擄, with the increase of tooth taper, the axial tensile capacity of the spherical seat fishing mechanism increases and the axial insertion load decreases. The high bearing ball pedestal fishing mechanism is successfully salvaged in a simulated well, which indicates that the high bearing ball seat fishing mechanism can meet the requirements of field application and provides a new technical way to improve the success rate of ball seat salvage.
【作者單位】： 頁巖氣富集機理與有效開發(fā)國家重點實驗室;中國石化石油工程技術研究院;
【基金】：國家科技重大專項“低豐度致密低滲油氣藏開發(fā)關鍵技術”(編號:2016ZX05048) 中國石化科技攻關項目“免鉆全通徑開關滑套分段壓裂技術研究”(編號:P14115)部分研究內容
【分類號】：TE921.9

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本文編號：1779304