Development and Design and Heat Treatment of Production, Storage and Mine Drilling Pipes in Petroleum and Geothermal Industries

Abstract

In this study, sequential and different temperature heat treatments were applied to steels after austenating heat treatment applied to different AISI steel types. The effects of tempering heat treatment applied on the mechanical properties of the steel after quenching were investigated. The production of prototypes of the materials to be used in the drilling industry and the improvement of the properties of the drilling pipes used in the geothermal, petroleum, storage and mining sectors by thermal processes determined according to the standards have been realized. Different heat treatments have been applied to the materials in AISI standards provided by considering the desired material properties of the drill pipes. In order to improve the mechanical properties, the heat treatment process was determined and applied by a wide literature review. The prototypes of the drill rods were produced in three different AISI standards (AISI 4130, AISI 4140). Seamless tubes are produced according to AISI 4340 and ductile, semi-ductile and brittle conditions. 946.4 MPa. In addition, corrosion tests showed significant corrosion resistance.

Keywords

• Heat treatment
• Drilling rods
• Petroleum industry

Petrol ve Jeotermal Sektörü Depolama ve Maden Sondaj Borularının Üretimi, Geliştirilmesi, Tasarımı ve Isıl İşlemi

Abstract

Bu çalışmada, farklı AISI çelik türlerine uygulanan östenitleme ısıl işleminden sonra çeliklere sıralı ve farklı sıcaklık ısıl işlemleri uygulanmış. Bu işlemlerden sonra su verme işlemini takiben uygulanan temperleme ısıl işleminin çeliğin mekanik özellikleri üzerine etkileri araştırılmıştır. Sondaj sanayinde kullanılacak malzemelerin protatiplerin üretilmesi, jeotermal, petrol, depolama ve maden sektöründe kullanılan sondaj borularının standartlara göre belirlenen ısıl işlemlerle özelliklerinin iyileştirilmesi gerçekleştirilmiştir. Sondaj borularının istenilen malzeme özellikleri dikkate alınarak temin edilen AISI standartlarındaki malzemelere farklı ısıl işlemler uygulanmıştır.  Mekanik özelliklerin iyileştirilmesi için ısıl işlem süreci geniş bir literatür taramasıyla belirlenmiş ve uygulanmıştır. Sondaj çubuklarının protatipleri, üç farklı AISI standardında (AISI 4130, AISI 4140) malzemelerinden 3 er adet olmak üzere protatipler üretilmiştir. Dikişsiz tüpler olarak AISI 4340 ve sünek, yarı sünek ve kırılgan koşullara göre üretilmiştir: Yapılan Isıl işlem deneyleri sonucunda malzemelerin % uzama değerleri %9-18, Max sertlik değerleri 280-495 HB, gerilme değerleri 834,2-1578 MPa ve Minumun akma dayanımı 946,4 MPa ile dikkate değer iyileştirmeler göstermiştir. Ayrıca yapılmış olan korozyon testlerinde kayda değer korozyon direnci göstermiştir.

Keywords

• : Isıl işlem
• delme çubukları
• petrol endüstrisi

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