A simple and accurate numeric solution procedure for nonlinear buckling model of drill string with frictional effect

Sun, Youhong; Yu, Yongping; Лиу, Баочанг

doi:10.1016/j.petrol.2015.02.026

Cited by 15 publications

(6 citation statements)

References 21 publications

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“…Researchers [5] studied the impact of rotation speed on the deflection of drill string and the magnitude of reaction in the zone of contact with the well wall. Paper [6] explored the loss of stability of drill string in vertical and horizontal wells and proposed a method for determining the permissible loads. Article [7] applied probabilistic approach when studying the behavior of drill string pipe under the action of operational loads with regard to the interaction with the rock of well wall.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…That is, research [1,2,[4][5][6][7][8][9][10] is mostly devoted to studying the behavior of drill string, mantled from smooth pipes, under loading.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…To receive C, let us substitute general solution (7) into boundary conditions (6). We shall obtain a system of linear algebraic equations…”

Section: 2 Reduction To the First Order Differential Systemmentioning

confidence: 99%

“…These parameters are met by non-trivial solutions of system (8), and, therefore, boundary problem (5), (6), which determine forms of the ADP stability loss.…”

Section: 2 Reduction To the First Order Differential Systemmentioning

confidence: 99%

“…It is known from [22] that the solution of boundary problem (9), (10) coincides at n→∞ evenly in the segment [0.1] to the solution of boundary problem (5), (6).…”

Section: 3 Building An Approximating Modelmentioning

confidence: 99%

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Improving the aluminum drill pipes stability by optimizing the shape of protector thickening

Olesya

Мазуренко

Ropyak

et al. 2017

EEJET

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Розроблено математичну модель і дослі-джено втрату стійкості алюмінієвою буриль-ною трубою із зовнішнім протекторним потов-щенням на середній ділянці під дією крутного моменту та осьової стискаючої сили. За резуль-татами числового аналізу визначено величи-ни критичних навантажень, при яких труба втрачає стійкість в залежності від форми протекторного потовщення. Запропоновано оптимальну обтічну форму протекторно-го потовщення. Розроблено нову конструкцію алюмінієвої бурильної труби з протекторним потовщенням Ключові слова: бурильна труба, протектор-не потовщення, крутний момент, осьова сила, стійкість, деформація Разработана математическая модель и исследована потеря устойчивости алюмини-евой бурильной трубы с внешним протектор-ным утолщением под воздействием крутящего момента и осевой сжимающей силы. На осно-ве результатов численного анализа определены величины критических нагрузок, при которых происходит потеря устойчивости трубы в зави-симости от формы протекторного утолщения. Предложена оптимальная обтекаемая форма протекторного утолщения. Разработана новая конструкция алюминиевой бурильной трубы с протекторным утолщением Ключевые слова: бурильная труба, протек-торное утолщение, крутящий момент, осевая сила, устойчивость, деформация UDC 621.923 : 622.24.058.6

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…That is, research [1,2,[4][5][6][7][8][9][10] is mostly devoted to studying the behavior of drill string, mantled from smooth pipes, under loading.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…To receive C, let us substitute general solution (7) into boundary conditions (6). We shall obtain a system of linear algebraic equations…”

Section: 2 Reduction To the First Order Differential Systemmentioning

confidence: 99%

“…These parameters are met by non-trivial solutions of system (8), and, therefore, boundary problem (5), (6), which determine forms of the ADP stability loss.…”

Section: 2 Reduction To the First Order Differential Systemmentioning

confidence: 99%

“…It is known from [22] that the solution of boundary problem (9), (10) coincides at n→∞ evenly in the segment [0.1] to the solution of boundary problem (5), (6).…”

Section: 3 Building An Approximating Modelmentioning

confidence: 99%

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