{"id":25675,"date":"2019-02-26T12:01:07","date_gmt":"2019-02-26T19:01:07","guid":{"rendered":"https:\/\/www.boartlongyear.com\/?p=25675"},"modified":"2026-06-09T10:01:14","modified_gmt":"2026-06-09T16:01:14","slug":"creating-value-through-superior-core","status":"publish","type":"post","link":"https:\/\/www.boartlongyear.com\/fr\/insite\/creating-value-through-superior-core\/","title":{"rendered":"Forage australasien: cr\u00e9er de la valeur gr\u00e2ce \u00e0 un noyau sup\u00e9rieur"},"content":{"rendered":"<section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span12\"><div  class=\"medianote\" >\n<p class=\"p_tc\">Cette histoire a \u00e9t\u00e9 publi\u00e9e \u00e0 l&#039;origine dans <a href=\"https:\/\/www.adia.com.au\/resources\/our-magazine-4\" target=\"_blank\" rel=\"noopener noreferrer\">Magazine Australasian Drilling<\/a> le 21 f\u00e9vrier 2019<\/p>\n<\/div><span class=\"clear\" style=\"height:15px;display:block;\"><\/span><h1  ><span><span style=\"color: #000000;\">Cr\u00e9er de la valeur gr\u00e2ce \u00e0 un noyau sup\u00e9rieur<\/span><\/span><\/h1><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span12\"><div  class=\"intro\" >\n<p class=\"p_tc\">Bon, le noyau de qualit\u00e9 est souvent difficile \u00e0 r\u00e9cup\u00e9rer. De la configuration initiale d&#039;une analyse \u00e0 son placement dans la bo\u00eete, de nombreux facteurs affectent un \u00e9chantillon principal final. Il est important de comprendre les erreurs courantes \u00e0 \u00e9viter, de r\u00e9soudre les probl\u00e8mes si possible et d&#039;utiliser les meilleures pratiques pour obtenir un noyau de qualit\u00e9 - un noyau propre, \u00e9tiquet\u00e9 et pr\u00e9cis.<\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span5\"><h3  ><span>Qu&#039;est-ce qui peut aller mal?<\/span><\/h3><div  class=\"\" >\n<p class=\"p_tc\">M\u00eame les foreurs exp\u00e9riment\u00e9s peuvent faire des erreurs lors de la r\u00e9cup\u00e9ration du noyau. Avant la r\u00e9cup\u00e9ration du noyau, certains facteurs lors du forage peuvent avoir un impact n\u00e9gatif sur le noyau, tels que le type de foret utilis\u00e9 et l&#039;emplacement du site de forage. Par exemple, si vous percez dans une formation molle, comme du sable, il est judicieux d\u2019utiliser un foret TT avec un centre ferm\u00e9 pour que l\u2019eau ne soit pas directement en contact avec le noyau avant qu\u2019il ne p\u00e9n\u00e8tre dans le tube interne. Ce faisant, on r\u00e9cup\u00e9rera plus de carottes qu&#039;avec un foret permettant le contact de l&#039;eau avec les carottes.<\/p>\n<\/div><\/div><div class=\"tcvpb_column_tc_span7\"><div  class=\"tcvpb-image\" ><a href=\"https:\/\/d3qsvy4hh6w8p5.cloudfront.net\/website-bly\/bly-newman-day-two-feb-2012-128_-2.jpg\" class=\"lightbox\" data-lightbox=\"image\"><img decoding=\"async\" src=\"https:\/\/d3qsvy4hh6w8p5.cloudfront.net\/website-bly\/bly-newman-day-two-feb-2012-128_-2.jpg\">\n\t\t\t<canvas class=\"grey-effect\"><\/canvas>\n\t\t\t\n\t\t<\/a><\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span12\"><span class=\"clear\" style=\"height:15px;display:block;\"><\/span><div  class=\"\" >\n<p class=\"p_tc\">Un autre facteur est la perte de noyau au d\u00e9but d&#039;une analyse, en raison des mat\u00e9riaux for\u00e9s laiss\u00e9s par une analyse pr\u00e9c\u00e9dente. Ce mat\u00e9riau roule devant le foret et brise le noyau pendant que les foreurs tentent de forer leur nouvelle piste.<\/p>\n<p class=\"p_tc\">L&#039;une des \u00e9tapes les plus critiques \u00e0 retenir est le placement de base dans la bo\u00eete. Cela inclut la fa\u00e7on dont il est \u00e9tiquet\u00e9, l&#039;ordre et la direction sp\u00e9cifique de l&#039;\u00e9chantillon. Un pi\u00e8ge courant est de ne pas s&#039;adapter aux besoins du client. Il peut \u00eatre courant pour une \u00e9quipe de placer le noyau dans une direction particuli\u00e8re et peut cr\u00e9er de la confusion si le client requiert un placement diff\u00e9rent. Si le noyau est positionn\u00e9 en arri\u00e8re \u00e0 l&#039;int\u00e9rieur de la bo\u00eete, il est difficile de d\u00e9chiffrer la bonne direction, ce qui affecte les informations. Il est essentiel de conna\u00eetre rapidement les attentes du client et de former les \u00e9quipes en cons\u00e9quence afin de produire des \u00e9chantillons repr\u00e9sentatifs pr\u00e9cis.<\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span6\"><h3  ><span>Conseils de d\u00e9pannage pour la r\u00e9cup\u00e9ration de base<\/span><\/h3><div  class=\"\" >\n<p class=\"p_tc\">De nombreuses m\u00e9thodes diff\u00e9rentes contribuent \u00e0 une meilleure r\u00e9cup\u00e9ration du noyau intact. Une pratique simple consiste \u00e0 raccourcir la longueur des pistes. Par exemple, si une personne ex\u00e9cute des courses de cinq pieds en tant que norme pour son \u00e9quipe et que le noyau est perdu, la course peut \u00eatre raccourcie. Cela causera moins de stress pour le noyau d&#039;entrer dans le tube et la r\u00e9cup\u00e9ration du noyau augmentera. Il en r\u00e9sulte beaucoup plus de tourn\u00e9es pour la journ\u00e9e et moins de m\u00e9trage par \u00e9quipe, mais l&#039;objectif de conserver des \u00e9chantillons de base de qualit\u00e9 a plus de chances d&#039;\u00eatre atteint.<\/p>\n<p class=\"p_tc\">Une autre pratique consiste \u00e0 rev\u00eatir le tube interne ou \u00e0 se scinder avec du EZ-Mud\u00ae * ou un polym\u00e8re, ce qui permet de conserver une partie du noyau dans le tube. On peut \u00e9galement pomper des pellets d\u2019Enviroplug\u00ae * ou de bentonite dans le trou apr\u00e8s chaque passage, ce qui cr\u00e9e une argile qui colle les d\u00e9bris les uns aux autres.<\/p>\n<\/div><\/div><div class=\"tcvpb_column_tc_span6\"><div  class=\"tcvpb-image\" ><a href=\"https:\/\/d3qsvy4hh6w8p5.cloudfront.net\/website-bly\/robert-jex-headshot.jpg\" class=\"lightbox\" data-lightbox=\"image\"><img decoding=\"async\" src=\"https:\/\/d3qsvy4hh6w8p5.cloudfront.net\/website-bly\/robert-jex-headshot.jpg\">\n\t\t\t<canvas class=\"grey-effect\"><\/canvas>\n\t\t\t\n\t\t<\/a><\/div><span class=\"clear\" style=\"height:15px;display:block;\"><\/span><h5  ><span><em><span style=\"font-size: 10pt;\">Robert Jex, chef de division - Carottage, \u00c9tats-Unis et Mexique<\/span><\/em><\/span><\/h5><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span12\"><h3  ><span>R\u00e9cup\u00e9ration du noyau de qualit\u00e9<\/span><\/h3><div  class=\"\" >\n<p class=\"p_tc\">Une approche pour r\u00e9cup\u00e9rer un noyau de qualit\u00e9 consiste \u00e0 utiliser des fentes dans les tubes int\u00e9rieurs. Lors du pompage des scissions, le noyau reste intact et appara\u00eet tel qu\u2019il \u00e9tait dans le sol. Ensuite, le noyau \u00e9tant plac\u00e9 dans des bo\u00eetes, il est moins susceptible de se briser, ce qui donne une pr\u00e9sentation plus propre. Globalement, les scissions fournissent un \u00e9chantillon de base plus coh\u00e9rent et repr\u00e9sentatif.<\/p>\n<p class=\"p_tc\">Lorsque vous percez avec un noyau HQ \u2122 standard, les scissions ne sont pas une option. Les foreurs doivent extraire m\u00e9ticuleusement le noyau de la chambre \u00e0 air sans le briser. L&#039;utilisation de marteaux et d&#039;autres outils n&#039;est pas recommand\u00e9e car ils ont tendance \u00e0 casser le noyau, ce qui rend difficile le stockage pr\u00e9cis de l&#039;\u00e9chantillon dans la bo\u00eete. Au lieu de cela, il est plus efficace de pomper ou de pousser le noyau avec des m\u00e9thodes alternatives comme un syst\u00e8me de presse hydraulique.<\/p>\n<p class=\"p_tc\">La qualit\u00e9 de base ne d\u00e9pend pas uniquement du pourcentage du taux de r\u00e9cup\u00e9ration de la base, elle tient \u00e9galement compte de la base lav\u00e9e, plac\u00e9e dans la bo\u00eete et transport\u00e9e. Une fois le noyau r\u00e9cup\u00e9r\u00e9, de nombreux clients peuvent se rendre sur le site pour pr\u00e9lever l\u2019\u00e9chantillon. Cependant, il incombe souvent \u00e0 l&#039;entreprise de transporter le noyau. Les \u00e9quipes doivent \u00eatre conscientes du potentiel de rupture du noyau en cours de route. Il est essentiel de conduire prudemment et lentement, et d&#039;\u00e9viter toujours les bosses ou les creux sur la route.<\/p>\n<p class=\"p_tc\">Aucun livre ne peut enseigner toutes les exp\u00e9riences de la vie. Chaque trou for\u00e9 devient une nouvelle exp\u00e9rience de vie qui ne peut \u00eatre captur\u00e9e dans un manuel. Avec l&#039;exp\u00e9rience du carottage en surface, il y a beaucoup \u00e0 apprendre sur l&#039;importance du noyau de qualit\u00e9, les difficult\u00e9s rencontr\u00e9es lors de la r\u00e9cup\u00e9ration du noyau et les meilleures pratiques pour obtenir des \u00e9chantillons de base de qualit\u00e9. Si tout le monde en savait autant qu&#039;un g\u00e9ologue pour reconstituer le noyau, tout le monde aurait des r\u00e9sultats coh\u00e9rents sur le terrain. Toutefois, dans la mesure o\u00f9 cela n\u2019est pas possible, il est important de conna\u00eetre les meilleures pratiques et de proc\u00e9der, le cas \u00e9ch\u00e9ant, au d\u00e9pannage afin de restaurer la qualit\u00e9 de base de mani\u00e8re coh\u00e9rente.<\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section><section class=\"tcvpb_section_tc\">\n\t\t\n\t\t<div class=\"tcvpb_section_content\"><div class=\"tcvpb_container\"><div class=\"tcvpb_column_tc_span12\"><div  class=\"\" >\n<p class=\"p_tc\"><em>* EZ-Mud est une marque d\u00e9pos\u00e9e de Baroid Industrial Drilling Products. Enviroplug est une marque d\u00e9pos\u00e9e de Wyo-Ben, Inc.<\/em><\/p>\n<p class=\"p_tc\"><em>Q est une marque de commerce de Boart Longyear<\/em><\/p>\n<\/div><\/div><\/div><\/div>\n\t\t\n\t\t\n\t<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":66,"featured_media":25141,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[137],"tags":[386,387,388,389],"class_list":["post-25675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exploration","tag-quality-core","tag-experienced-drillers","tag-core-recovery","tag-core-retrieval","insitetype-field-experts"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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