{"id":15887,"date":"2026-06-16T11:39:20","date_gmt":"2026-06-16T03:39:20","guid":{"rendered":"https:\/\/www.drillpipes.com\/how-to-choose-api-5dp-tuberia-de-perforacion-grados-for-deep-and-directional-pozos\/"},"modified":"2026-09-18T16:10:17","modified_gmt":"2026-09-18T08:10:17","slug":"how-to-choose-api-5dp-tuberia-de-perforacion-grados-for-deep-and-directional-pozos","status":"publish","type":"post","link":"https:\/\/www.drillpipes.com\/es\/how-to-choose-api-5dp-tuberia-de-perforacion-grados-for-deep-and-directional-pozos\/","title":{"rendered":"How to Choose API 5DP tuber\u00eda de perforaci\u00f3n grados for Deep and Directional pozos"},"content":{"rendered":"\n

API 5DP Drill Pipe Grade Selection<\/strong> for deep and directional wells requires two different review paths. Deep-well selection is governed mainly by buoyed drill string weight, maximum hook load, planned overpull and the tensile capacity of the upper string. Directional-well selection adds torque-drag, dogleg-related bending, rotation time and fatigue near the upset transition, tool joint and thread shoulder.<\/p>\n\n

The key decision is where X95 tuber\u00eda de perforaci\u00f3n, G105 tuber\u00eda de perforaci\u00f3n and S135 tuber\u00eda de perforaci\u00f3n<\/strong> fit within these load conditions. X95 remains relevant where directional load and par are controlled, G105 covers many deeper or higher-load sections, and S135 is reviewed when hook load, long lateral rotation or ERD loading exceeds the available G105 margin. tuber\u00eda size, espesor de pared, upset type, uni\u00f3n capacity, service condition and inspection records must support the same grado decision.<\/p>\n\n

Deep and Directional pozos Require DIFferent grado Logic<\/h2>\n\n

pozo profundos and directional pozos do not place the same demand on a sarta de perforaci\u00f3n. In a predominantly vertical pozo profundo, the upper joints carry the accumulated buoyed peso of the sarta de perforaci\u00f3n together with planned overpull. The first grado-selecci\u00f3n question is whether the selected tuber\u00eda body, espesor de pared and uni\u00f3n provide sufficient tensile margin.<\/p>\n\n

Directional pozos introduce a combined load path. A joint rotating through a build section or dogleg carries axial tension while also transmitting rotary par and passing through repeated bending cycles. In a long horizontal interval, par and arrastre accumulate over measured depth, while extended rotation iNCreases fatiga exposure near the upset transition, fricci\u00f3n weld, rosca shoulder and uni\u00f3n.<\/p>\n\n

Review Item<\/th>pozo profundo<\/th>Directional or Horizontal pozo<\/th><\/tr><\/thead>
Primary load<\/td>Axial tension and hook load<\/td>Combined tension, par, arrastre and bending<\/td><\/tr>
Main design input<\/td>Buoyed string peso, overpull and tensile margin<\/td>par-arrastre, dogleg severity and rotation time<\/td><\/tr>
Main mechanical coNCern<\/td>Insufficient upper-string tensile capacity<\/td>Cyclic fatiga and uni\u00f3n-side stress<\/td><\/tr>
Common grado range<\/td>G105 \/ S135<\/td>X95 \/ G105 \/ S135<\/td><\/tr>
Additional review<\/td>uni\u00f3n tensile capacity<\/td>uni\u00f3n par, upset transition and shoulder contact<\/td><\/tr><\/tbody><\/table><\/figure>\n\n
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