CAJ | 학술논문

在石油钻采中，封隔器卡瓦承受巨大压力易发生断裂，直接影响到封隔器的密封性能，从而影响油井的开采过程及生产安全。运用有限元分析软件ANSYS Workbench对卡瓦进行有限元数值模拟分析。施加140 kN载荷时，卡瓦最大应力为230.11 MPa，超过其材料的最大抗压强度；对卡瓦封隔器试验模型进行压裂试验，试验施加压力为186.33 kN时卡瓦发生断裂，测得抗压强度为233 MPa；对卡瓦进行结构设计，卡瓦牙间距尺寸分别为15 mm、25 mm和30 mm。根据有限元分析结果，卡瓦牙间距为30 mm时卡瓦应力、应变分布趋于均匀，所承受的最大载荷为240 kN，最大应力为230.66 MPa、最大变形量为0.058 mm，证明此卡瓦结构尺寸较为合理。
재석유찬채중，봉격기잡와승수거대압력역발생단렬，직접영향도봉격기적밀봉성능，종이영향유정적개채과정급생산안전。운용유한원분석연건ANSYS Workbench대잡와진행유한원수치모의분석。시가140 kN재하시，잡와최대응력위230.11 MPa，초과기재료적최대항압강도；대잡와봉격기시험모형진행압렬시험，시험시가압력위186.33 kN시잡와발생단렬，측득항압강도위233 MPa；대잡와진행결구설계，잡와아간거척촌분별위15 mm、25 mm화30 mm。근거유한원분석결과，잡와아간거위30 mm시잡와응력、응변분포추우균균，소승수적최대재하위240 kN，최대응력위230.66 MPa、최대변형량위0.058 mm，증명차잡와결구척촌교위합리。
Packer slips prone to fracture under tremendous pressure during drilling,it will affect the sealing performance of the packer directly, and affect the process of mining and safety in production wells. The slip was analysised using the ifnite element analy-sis software.When the applied load is 140 kN, the slip’s maximum stress is 230.11 MPa, which exceeding the maximum compressive strength of this material.The slip packer test mode was undergo a fracturing test, slip fractured when the test pressure is 186.33 kN, the compressive strength is measured 233 MPa. Slip structure was designed, the spacing sizes of slip tooth were 15 mm, 25 mm and 30 mm. According to the results of ifnite element analysis, when the spacing size of slip tooth is 30 mm, the distribution of the slip’s stress and strain tends to uniform. When 240 kN load is applied, the maximum stress exceeds the maximum compressive strength of slip’s material, and the slip’s maximum stress is 230.66 MPa, the maximum deformation is 0.058 mm,and provides the slip structure size is reasonable.