超深井用140钢级套管模拟井射孔试验研究  

Experimental Study on Perforating Test in Model Well of 140Grade Steel Casing for Ultra-deep Well

作　　者：贾宝贵[1] 王伟[2] 郇国庆[1] 张建兵[3] 王双来[2] 吕祥鸿[3] 

机构地区：[1]塔里木油田公司,新疆库尔勒841000 [2]西安摩尔石油工程实验室,西安710065 [3]西安石油大学,西安710065

出　　处：《石油矿场机械》2015年第1期38-43,共6页Oil Field Equipment

基　　金：国家自然科学基金(51074126);陕西省教育厅资助项目(11JK0792)

摘　　要：随机抽取国产超深井用140钢级139.7mm×12.09mm和177.8mm×12.65mm的套管各3支进行模拟井射孔试验,对射孔前后套管材料的力学性能、微观组织及几何尺寸进行了对比检测,并以实测参数建模,运用有限元方法分析了射孔后套管的挤毁强度。试验及检验结果表明:6支套管在射孔后均未见宏观裂纹,材料的力学性能及套管尺寸参数满足相关标准要求;139.7mm×12.09mm套管在175℃的井底高温下抗挤强度下降14.4%,177.8mm×12.65mm套管在175℃的井底高温下抗挤强度下降11.7%。测试的140钢级套管射孔后的各项性能满足油田使用要求。Six casings are randomly chosen from two different 140ksi casings,the specifications are φ139.7 mm× 12.09 mm and φ177.8 mm× 12.65 mm,then perforating in model well. Mechanical properties,microstructure and geometry of the casing material are compared before and after per- foration. The finite element model is established according to the actual parameters after perfora- ting to analyze the casing collapsing strength. The results show that there is no macroscopic crack on the surface of all the six casings ; mechanical test results of the material and casing size parame- ters also meets the relevant standards. The collapse strength decreased by approximately 14.4% at 175 ℃ for casing which specifications is φ139.7 mm ×12.09 mm. The collapse strength de- creased by approximately 11.7% at 175℃ for casing which specifications is φ177.8 mm× 12.65 mm. So the perforating performances of this 140 ksi casing meet the requirements of oilfield.

关 键 词：深井 套管 射孔 试验 

分 类 号：TE925.307[石油与天然气工程—石油机械设备]