Prediction of conditions of longterm operated drill pipes failure

• Autorzy: Vytyaz O.

Identyfikatory

DOI

10.7494/drill.2017.34.1.15

• Języki publikacji: EN

Abstrakty

EN

An experimental assessment of the force criterion for metal failure of longterm drill pipes operation wascarried out. Defined were the conditions under which during tripping the failure of longterm operated drillpipes is possible when they contain an external or internal circumferential transverse crack. The interrelationof critical external or internal circumferential transverse cracks in drill pipes to the drilling stringweight was established. It was shown that the internal cross cracks during drilling string tripping at depthsexceeding 3000 m are more dangerous than the external ones, whereas within the range of 1000–3000 m the external circumferential transverse cracks are more dangerous.

Słowa kluczowe

EN

critical stress intensity factor; cracks

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: AGH Drilling, Oil, Gas
• Rocznik: 2017
• Tom: Vol. 34, no. 1
• Strony: 15--26
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Vytyaz O.

• Institute of Petroleum Engineering, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine

Bibliografia

• [1] Artym V.I., Yatsynyak I.I., Grytsiv V.V. et al.: Analysis of corrosion-fatigue failure of the drill string elements. Exploration and Development of Oil and Gas Fields, No. 2(43), 2012, pp. 197-202.
• [2] Pokhmurskii V.I., Kryzhanivskyi E.I., Ivasiv V.M. et al.: The strength and durability of oil and gas equipment. in: Panasiuk V.V. (ed.): Fracture mechanics and strength of materials: reference manual, vol. 10. Lviv-Ivano-Frankivsk, Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Ivano-Frankivsk National Technical University of Oil and Gas, 2006, 1193 p.
• [3] Friedman Ya.B.: Mechanical properties of metals. Mechanical testing. Structural strength, vol. 2. 3rd ed. Mashinostroienie, Moscow 1974, 368 p.
• [4] Panasiuk V.V.: Mechanics of quasibrittle rupture of materials. Naukova dumka, Kiev 1991, 416 p.
• [5] Grabowskyi R.S., Lepak O.M., et al.: Evaluation of conditions of longterm operated pipelines destruction. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas, No. 1 (38), 2015, pp. 46-53.
• [6] Calculations and testing on strength. Methods of mechanical testing of metals. Defining characteristics of crack growth resistance (failure viscosity under static load). GOST 25.506-85. Izdatelstvo standartov, Moscow 1985, 62 p.
• [7] Dmytrakh I.M., Tot L., Bilyi O.L., Syrotyuk A.M.: Workability of materials and structural elements with chisel shaped stress concentrators. in: V.V. Panasyuk (ed.): Fracture mechanics and strength of materials: reference manual, vol. 13. SPOLOM, Lviv 2012, 316 p.
• [8] Harris D.O.: Stress Intensity Factor for Hollow Circumferentially Notched Round Bars. Trans. ASME: J. of Basic Engineering, 89, 1967, pp. 103-106.
• [9] Shuai Luo, Sujun Wu: Effect of stress distribution on the tool joint failure of internal and external upset drill pipes. Materials & Design, vol. 52, Dec. 2013, pp. 308-314.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).