CAJ | 학술논문

为满足塔里木致密气藏氮气钻完井需求，研制了一种新型高强度超级13Cr油钻杆。采用M TS试验机对新型超级13Cr油钻杆和S135钻杆的强度性能进行了对比测试；采用示波冲击试验机对新型超级13Cr油钻杆和S135钻杆的冲击性能进行了对比测试；采用高温高压釜对新型超级13Cr油钻杆和S135钻杆的耐CO2腐蚀性能进行了对比测试。结果表明：新型超级13Cr油钻杆具有良好力学性能和耐腐蚀性能，其屈服强度937 M Pa、抗拉强度976 M Pa、延伸率为21．5％、室温冲击功162．82 J。其拉伸性能与S135接近，冲击性能明显优于S135；模拟工况下，新型超级13C r油钻杆气相腐蚀速率0．0036 m m/a、液相腐蚀速率0．0394 m m/a。因此，新型超级13C r油钻杆既能满足钻井的需要又能满足完井开采的要求，可为含C O 2致密砂岩气田氮气钻完井作业提供支持。
위만족탑리목치밀기장담기찬완정수구，연제료일충신형고강도초급13Cr유찬간。채용M TS시험궤대신형초급13Cr유찬간화S135찬간적강도성능진행료대비측시；채용시파충격시험궤대신형초급13Cr유찬간화S135찬간적충격성능진행료대비측시；채용고온고압부대신형초급13Cr유찬간화S135찬간적내CO2부식성능진행료대비측시。결과표명：신형초급13Cr유찬간구유량호역학성능화내부식성능，기굴복강도937 M Pa、항랍강도976 M Pa、연신솔위21．5％、실온충격공162．82 J。기랍신성능여S135접근，충격성능명현우우S135；모의공황하，신형초급13C r유찬간기상부식속솔0．0036 m m/a、액상부식속솔0．0394 m m/a。인차，신형초급13C r유찬간기능만족찬정적수요우능만족완정개채적요구，가위함C O 2치밀사암기전담기찬완정작업제공지지。
A new high strength super 13Cr oil drill pipe was developed for tight gas reservoir exploitation in Tarim oilfield .This paper studies the tensile property and impact property of S135 dirll pipe and new super 13Cr oil drill pipe by a material tensile testing machine and a instrumen-ted impact testing machine respectively .Their corrosion resistance to CO2 is also studied through high temperature and high pressure autoclave test .The results show that the ultimate strength of the new super 13Cr steel reaches 976 MPa ,with the yielding strength 937 MPa and elongation 19 .0% .Its impact energy reaches 162 .82 J .Compared with S135 steel ,the new super 13Cr steel has similar strength property and better impact property .Under the test condition ,the corrosion rate of the super 13Cr steel is 0 .003 6 mm/a in gas phase and 0 .039 4 mm/a in liquid phase . Therefore ,the new super 13Cr oil drill pipe can meet the requirement of drilling and well compli-cation .The new oil drill pipe could provide support for tight gas reservoir nitrogen drilling and well complication .