{"id":16735,"date":"2026-09-16T18:18:43","date_gmt":"2026-09-16T10:18:43","guid":{"rendered":"https:\/\/www.kingpdc.com\/?p=16735"},"modified":"2026-09-18T16:19:11","modified_gmt":"2026-09-18T08:19:11","slug":"classification-de-lusure-du-trepan-pdc","status":"publish","type":"post","link":"https:\/\/www.kingpdc.com\/fr\/classification-de-lusure-du-trepan-pdc\/","title":{"rendered":"Classification des forets PDC \u00e9mouss\u00e9s : enregistrez l'usure avant d'en identifier les causes."},"content":{"rendered":"

Le tr\u00e9pan est sorti et une dent de coupe s'est \u00e9br\u00e9ch\u00e9e dans l'\u00e9paulement. Les personnes qui examinent le tr\u00e9pan sont souvent promptes \u00e0 discuter des mat\u00e9riaux, du poids sur l'outil, ou si cette section de la formation est trop dure. Le probl\u00e8me est qu'avec l'apparition de ces 1 dents seules, quelle affirmation reste encore instable. Y a-t-il des dommages similaires sur d'autres lames avec le m\u00eame rayon ? Le buse est-elle bouch\u00e9e ? Ce puits a-t-il \u00e9t\u00e9 remont\u00e9 selon le plan ou a-t-il d\u00fb \u00eatre remont\u00e9 apr\u00e8s une baisse de la vitesse de forage ? Ces situations ne sont pas claires, et le jugement ult\u00e9rieur peut facilement d\u00e9vier.<\/p>\n

La premi\u00e8re chose que fait l'\u00e9valuation de l'usure des tr\u00e9pans PDC est d'enregistrer pr\u00e9cis\u00e9ment le tr\u00e9pan lorsqu'il sort du puits. Il enregistre ce qu'il voit, ne le tamponne pas \u00e0 l'avance pour une raison quelconque.<\/p>\n

Ne vous pr\u00e9cipitez pas pour nettoyer le tr\u00e9pan.<\/h2>\n

Le tr\u00e9pan avec de la boue n'est pas beau, mais il vaut la peine de le photographier 1 fois d'abord. Ce qui est accumul\u00e9 dans la rainure d'\u00e9vacuation des d\u00e9bris, si la surface du tr\u00e9pan est recouverte de boue, et si l'ouverture de la buse est bouch\u00e9e peuvent ne pas \u00eatre visibles apr\u00e8s le nettoyage. Laissez des photos de l'ensemble, de l'avant, de chaque lame et de la zone de jauge, puis nettoyez et v\u00e9rifiez les dents de coupe. Ainsi, lorsque vous verrez plus tard une usure ou un dommage local, vous pourrez au moins revenir sur l'\u00e9tat du nettoyage et de l'\u00e9vacuation des d\u00e9bris \u00e0 ce moment-l\u00e0.<\/p>\n

Apr\u00e8s le lavage, ne vous contentez pas de photographier la dent la plus grave. La surface de meulage est-elle lisse lentement, ou le bord s'effondre-t-il soudainement ? La couche de diamant est-elle s\u00e9par\u00e9e du substrat ? Si la dent a disparu, est-ce que toute la dent tombe de l'alv\u00e9ole, ou seulement une partie reste-t-elle ? Il est pr\u00e9f\u00e9rable de prendre le num\u00e9ro de la dent sur la photo, et les c\u00f4t\u00e9s et les dents adjacentes sont photographi\u00e9s dans les positions graves. Sinon, dans quelques jours, je tiendrai quelques discussions en gros plan, et personne ne pourra dire avec certitude \u00e0 quelle lame et position correspond la photo.<\/p>\n

1 dent est cass\u00e9e, et un anneau de dents est cass\u00e9, ce n'est pas la m\u00eame chose<\/h2>\n

Lors de l'inspection, parcourez 1 fois de l'int\u00e9rieur vers l'ext\u00e9rieur le long de la s\u00e9quence de lame fixe. Si l'alv\u00e9ole de la dent est vide, le num\u00e9ro d'origine doit \u00eatre conserv\u00e9. Sans le num\u00e9ro, il n'y a qu'une description g\u00e9n\u00e9rale de \"chute de dent\". Ce n'est qu'en conservant le num\u00e9ro que nous pouvons savoir si cela s'est produit pr\u00e8s du c\u00f4ne, du nez, de l'\u00e9paulement ou du diam\u00e8tre, et ce que les dents adjacentes ont subi par la suite.<\/p>\n

La comparaison dent par dent prend du temps, mais elle peut retenir la dent anormale. R\u00e9sum\u00e9 par r\u00e9gion, vous pouvez voir o\u00f9 les dommages sont principalement concentr\u00e9s. Les deux enregistrements sont utiles ensemble. Seule la pire 1 est affich\u00e9e, et il est facile de consid\u00e9rer les dommages individuels comme l'\u00e9tat de l'ensemble du tr\u00e9pan. Regarder uniquement la situation g\u00e9n\u00e9rale de la zone peut noyer les dents qui valent vraiment la peine d'\u00eatre trac\u00e9es. Si plusieurs lames sont endommag\u00e9es les unes apr\u00e8s les autres \u00e0 un rayon proche, il est plus n\u00e9cessaire de marquer les positions de dents impliqu\u00e9es, plut\u00f4t que d'\u00e9crire la 1 phrase \"l'usure de l'\u00e9paulement est grave\" en g\u00e9n\u00e9ral.<\/p>\n

Il y a aussi une r\u00e9f\u00e9rence facilement n\u00e9glig\u00e9e avant la notation : \u00e0 quoi il ressemblait \u00e0 l'origine avant de descendre dans le puits. Les dents de forme sp\u00e9ciale telles que les cr\u00eates et les surfaces concaves ne sont pas plates par nature ; les dents de jauge peuvent \u00e9galement avoir des surfaces de pr\u00e9-meulage. Le tr\u00e9pan retravaill\u00e9 et le tr\u00e9pan r\u00e9p\u00e9t\u00e9 ne peuvent pas \u00eatre compar\u00e9s \u00e0 l'\u00e9tat neuf. Il n'y a pas de photographies originales ou de cartes de dents qui peuvent enregistrer les dommages vus devant l'\u0153il, mais le jugement de la perte de mat\u00e9riau et du temps de formation doit \u00eatre prudent.<\/p>\n

Remettez le regard sur le tr\u00e9pan.<\/h2>\n

Le fait qu'un effondrement ressemble \u00e0 un impact ne signifie pas qu'il a \u00e9t\u00e9 prouv\u00e9 \u00eatre un impact ; la couleur est sombre et ne peut pas \u00eatre utilis\u00e9e seule comme preuve de surchauffe. D'abord, notez la morphologie et l'emplacement des dommages, puis regardez la profondeur du puits, la formation, le poids sur l'outil, la vitesse, le couple, le ROP, la pression de pompe et la raison de la remont\u00e9e. Si vous suspectez un stick-slip ou un saut de tr\u00e9pan, vous devez \u00e9galement trouver les donn\u00e9es pour la p\u00e9riode correspondante. En prenant uniquement les photos apr\u00e8s forage et un ensemble de param\u00e8tres moyens, il est difficile de restaurer la s\u00e9quence des dommages.<\/p>\n

Cela explique aussi pourquoi les m\u00eames dents de meulage peuvent avoir une conclusion compl\u00e8tement diff\u00e9rente : 1 tr\u00e9pan remonte normalement apr\u00e8s avoir termin\u00e9 l'intervalle pr\u00e9vu, tandis que l'autre 1 s'arr\u00eate t\u00f4t en raison d'une vitesse de forage anormale. Une apparence similaire ne signifie pas la m\u00eame performance. Les notations laissent les diff\u00e9rences de c\u00f4t\u00e9, et l'analyse des causes continue pour expliquer ces diff\u00e9rences.<\/p>\n

En fin de compte, des preuves sp\u00e9cifiques doivent \u00eatre fournies pour changer le mat\u00e9riau de la dent de coupe, ajuster la position de la dent, ou v\u00e9rifier les param\u00e8tres hydrauliques et de fonctionnement. Apr\u00e8s avoir for\u00e9 dans des conditions de travail similaires lors des 1 prochains voyages, puis en comparant avec le m\u00eame num\u00e9ro de dent, les photos et les m\u00e9thodes d'enregistrement, nous pouvons voir si les changements ont aid\u00e9.<\/p>\n\n\n

\"Inspection<\/figure>","protected":false},"excerpt":{"rendered":"

Utiliser le classement d'\u00e9mouss\u00e9 des tr\u00e9pans PDC pour documenter l'usure des taillants, comparer les zones du tr\u00e9pan et relier les sch\u00e9mas d'endommagement aux donn\u00e9es de forage.<\/p>","protected":false},"author":22,"featured_media":16737,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":false,"themepark_post_main_b":"","themepark_post_main_p":100,"themepark_paddingblock":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-16735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"metadata":{"views":["639"],"_edit_lock":["1789719553:4"],"rank_math_seo_score":["13"],"_thumbnail_id":["16737"],"_edit_last":["4"],"_ez-toc-disabled":[""],"_ez-toc-insert":[""],"_ez-toc-header-label":[""],"_ez-toc-device-target":[""],"_ez-toc-alignment":["none"],"_ez-toc-heading-levels":["a:0:{}"],"_ez-toc-alttext":[""],"_ez-toc-visibility_hide_by_default":[""],"_ez-toc-hide_counter":[""],"_ez-toc-exclude":[""],"_ez-toc-word_count_limit":["0"],"_ez-toc-position-specific":[""],"product_title":[""],"_product_title":["field_696d9344f3abf"],"product_description":[""],"_product_description":["field_696da3b2d265a"],"product_parametertitle":[""],"_product_parametertitle":["field_696da3d1d265b"],"product_parameter1":[""],"_product_parameter1":["field_696da3ded265c"],"product_parameter2":[""],"_product_parameter2":["field_696da3eed265d"],"product_parameter3":[""],"_product_parameter3":["field_696da3f2d265e"],"product_parameter4":[""],"_product_parameter4":["field_698bf210e1156"],"product_parameter5":[""],"_product_parameter5":["field_698bf214e1157"],"product_parameter6":[""],"_product_parameter6":["field_698bf217e1158"],"product_parameter7":[""],"_product_parameter7":["field_698bf21ae1159"],"product_parameter8":[""],"_product_parameter8":["field_698bf21fe115a"],"product_parameter9":[""],"_product_parameter9":["field_698bf223e115b"],"parameter_describ":[""],"_parameter_describ":["field_698bf251e1161"],"product_parameter_description1":[""],"_product_parameter_description1":["field_696da3f6d265f"],"product_parameter_description2":[""],"_product_parameter_description2":["field_696da404d2660"],"product_parameter_description3":[""],"_product_parameter_description3":["field_696da407d2661"],"product_parameter_description4":[""],"_product_parameter_description4":["field_698bf22ce115c"],"product_parameter_description5":[""],"_product_parameter_description5":["field_698bf234e115d"],"product_parameter_description6":[""],"_product_parameter_description6":["field_698bf238e115e"],"product_parameter_description7":[""],"_product_parameter_description7":["field_698bf23be115f"],"product_parameter_description8":[""],"_product_parameter_description8":["field_699e8b3f14c93"],"product_parameter_description9":[""],"_product_parameter_description9":["field_698bf23ee1160"],"characteristics_tittle":[""],"_characteristics_tittle":["field_696da36dd2659"],"characteristics_tittle1":[""],"_characteristics_tittle1":["field_696dbd2b33a74"],"characteristics_tittle2":[""],"_characteristics_tittle2":["field_696dbd3e33a75"],"characteristics_tittle3":[""],"_characteristics_tittle3":["field_696dbd4233a76"],"characteristics_tittle4":[""],"_characteristics_tittle4":["field_696f2adec2f9f"],"characteristics_tittle5":[""],"_characteristics_tittle5":["field_696dbd5f33a77"],"characteristics_tittle6":[""],"_characteristics_tittle6":["field_696dbd6533a78"],"detailed_specifications_table":[""],"_detailed_specifications_table":["field_696de96e3b662"],"characteristics_description1":[""],"_characteristics_description1":["field_696dbd6b33a79"],"characteristics_description2":[""],"_characteristics_description2":["field_696dbde158b66"],"characteristics_description3":[""],"_characteristics_description3":["field_696dbdec58b67"],"characteristics_description4":[""],"_characteristics_description4":["field_696dbdf058b68"],"characteristics_description5":[""],"_characteristics_description5":["field_696dbdf558b69"],"characteristics_description6":[""],"_characteristics_description6":["field_696dbdfc58b6a"],"comparison_points_tittle":[""],"_comparison_points_tittle":["field_696dbdff58b6b"],"comparison_points_description":[""],"_comparison_points_description":["field_696dbe2858b6c"],"comparison_points_tittle1":[""],"_comparison_points_tittle1":["field_696dbe3958b6d"],"comparison_points_tittle2":[""],"_comparison_points_tittle2":["field_696dbe5b58b6e"],"comparison_points_tittle3":[""],"_comparison_points_tittle3":["field_696dbe6058b6f"],"comparison_points_description1":[""],"_comparison_points_description1":["field_696dbe6d58b70"],"comparison_points_description2":[""],"_comparison_points_description2":["field_696dbe7d58b71"],"comparison_points_description3":[""],"_comparison_points_description3":["field_696dbe8058b72"],"application_title":[""],"_application_title":["field_696da5cd86855"],"applic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