关于陶瓷内衬油管全尺寸拉伸评价方法的探讨

Discussion on Evaluation Method of Full Scale Tension Test of Ceramic Lined Tubing

摘要: 本文探讨了以自蔓延高温合成技术制造的J55钢级为基管的陶瓷内衬油管为研究对象，通过自行设计开发的全尺寸拉伸测试方法对带接箍连接陶瓷内衬油管进行模拟井下工况受力情况。模拟了陶瓷内衬油管在井下受力的过程，克服了小试样研究井下力学性能的局限性。研究了陶瓷内衬油管的全尺寸拉伸后样品的表面状态，明确了全尺寸拉伸标准方法与关键参数。系统阐述了全尺寸拉伸评价测试的具体方法，为今后陶瓷内衬油管的质量控制提供借鉴。为陶瓷内衬油管的规范化应用提供了科学的评价依据以及为油田的选用产品提供了可靠的质量控制方法。

Abstract: The ceramic lined tubing with J55 steel grade as the base pipe manufactured by SHS technology is studied in the article. The full-scale tensile test method developed by our team is used to simulate the stress situation of ceramic lined tubing with coupling under downhole conditions. The stress process of ceramic lined tubing in downhole is simulated, which overcomes the limitation of small sample to test downhole mechanical properties. The surface state of ceramic lined tubing after full-scale drawing was studied, and the standard method and key parameters of full-scale drawing were defined. The specific method of full-scale tensile evaluation test is systematically described, which provides reference for the quality control of ceramic lined tubing in the future. The research offered scientific evaluation basis for the standardized application of ceramic lined tubing and a reliable quality control method for the selection of products in the oilfield.