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</div> <div class="content"> <div class="news_arc"> <h1>防治é’ÀL†å¤±æ•ˆçš„措施有哪些呢?</h1> <h2>发布旉™—´åQ?018-11-24</h2> <h2>来源åQ?a href='http://www.couivm.tw/news/271.html'>http://www.couivm.tw/news/271.html</a></h2> <h3><a href="http://www.couivm.tw/" target="_blank">é’ÀL†</a>在内外充满钻井液的狭长井眼里工作åQŒé€šå¸¸æ‰¿å—压、弯、扭、液力等载荷。钻杆虽¾lè¿‡æ— æ•°‹Æ¡çš„弯曲åQŒä¹Ÿä¸ä¼šäº§ç”Ÿç–²åŠ³è£‚纹。我们在面对é’ÀL†å¤±æ•ˆå‰è¦åšå¥½å“ªäº›é˜²æ²»æŽªæ–½å‘¢ï¼Ÿ<br /> æ ÒŽ®é’ÀL†çš„失效原因分析,é’ÀL†é™¤æ­£å¸¸ç£¨æŸè€Œå¤±æ•ˆå¤–åQŒé’»æ†çš„非正常失效原因可分äؓä¸ÞZ¸¤ä¸ªæ–¹é¢ï¼šå·¥äh操作原因和钻杆自íw«è´¨é‡åŽŸå› ã€‚因此,我们可以从提高钻杆质量和规范操作两方面来避免é’ÀL†éžæ­£å¸¸å¤±æ•ˆã€?br /> <strong>1.提高é’ÀL†è´¨é‡</strong><br /> <strong>(1)é’ÀL†ææ–™é€‰æ‹©:</strong><br /> 为适应é’ÀL†çš„受力分æž?é’ÀL†æ†ä½“应有较高的抗拉强度、较好抗弯性能和较好的冲击韧性。杆体材料应选择中碳合金¾l“构无缝钢管,合金元素中应含有较多的Cr、Mo½{‰å…ƒç´ ä»¥æé«˜ææ–™çš„抗拉张度和冲击韧æ€?含有Min、Si½{‰å…ƒç´ ä»¥æé«˜ææ–™çš„弹性ã€?br /> 用于杆体的无¾~é’¢½Ž¡çš„壁厚均匀度和轧制¾~ºé™·ä¹Ÿæ˜¯å½±å“é’ÀL„质量的重要因素。如轧制的钢½Ž¡å£åŽšå‡åŒ€æƒ…況严重,当钻杆较大的扭力作用æ—?å®ÒŽ˜“在壁厚较薄处¾Uµå‘裂开ã€?br /> é’ÀL†æŽ¥å¤´å—力更äؓ复杂,接头材料™åÀLœ‰å¾ˆé«˜¾l¼åˆæœºæ¢°æ€§èƒ½ã€?br /> <strong>2)加工工艺选择:</strong><br /> 目前国内é’ÀL†ä»ŽåŠ å·¥å·¥è‰ºåˆ†ä¸»è¦æœ‰æ•´ä½“锻造钻杆、镦¾_?摩擦焊钻杆和单纯摩擦焊钻杄ã€?br /> <strong>3)镦粗加厚ŒD늚„处理:</strong><br /> 不管是整体钻杆还是镦焊钻æ?镦厚部分与未镦厚部分之间的过渡段处理好坏是媄响镦锻质量的ä¸Õd› ç´ ã€‚过渡段应有­‘›_¤Ÿçš„é•¿åº?壁厚˜q‡æ¸¡å‡åŒ€ã€å…‰æ»‘无折皱。杆体经镦锻后更好进行整体调质处ç?以去除过渡段内应åŠ?<br /> <p> òq¶æé«˜å…¶¾l¼åˆæœºæ¢°æ€§èƒ½ã€?</p> <p style="text-align:center;"> <img src="/uploads/image/20181124/20181124153439_4327.jpg" alt="" /> </p> <strong>4åQ‰æŽ¥å¤´ç»“æž„åž‹å¼?/strong><br /> <strong>应力分散æ§?</strong><br /> 导向、定向钻杆受循环弯曲应力作用而疲åŠÏx–­è£‚是é’ÀL†çš„主要失效åŞå¼?而这¿Uå¤±æ•ˆä¸»è¦å‘生在é’ÀL†å…¬æŽ¥å¤´æ ¹éƒ¨æˆ–公接头螺¾UҎ ¹éƒ¨ã€‚在é’ÀL†å…¬æŽ¥å¤´æ ¹éƒ¨è®¾è®¡åº”力分散槽可有效地减小该处应力集中,从而提高其抗弯能力ã€?br /> 此外,ž®½é‡å¢žå¤§èžºçº¹ç›´å¾„、锥度螺¾U¹è®¾è®¡å’ŒåŠ å¤§èžºçº¹ä¸åº•åœ†å¼§åŠå¾„也能明显改善é’ÀL†å…¬æŽ¥å¤´æ ¹éƒ¨èƒ½åŠ›ã€?br /> <strong>5)丝扣的表面处ç?</strong><br /> 丝扣表面氮化处理能有效地防止¾_˜æ‰£,˜q˜èƒ½æé«˜ä¸æ‰£çš„耐磨性,从而提高其使用寿命ã€?br /> <strong>6)螺纹加工¾_‘Öº¦:</strong><br /> 接头螺纹应在数控车床上用成åŞ螺纹车刀加工,应尽量提高螺¾U¹ç‰™çš„表面质é‡?降低其表面粗¾p™åº¦å€¼æé«˜å…‰‹zåº¦,减少应力集中且有利保证钻杆的互换性ã€?br /> <strong>2.施工工艺的改˜q?/strong><br /> <strong>åQ?åQ‰è§„范操ä½?</strong><br /> 施工中要严格按照各种é’ÀL†æ‰€å…è®¸çš„拉力、扭矩和曲率半径来ä‹É用钻杆。对于施工企业来è¯?只有按规范ä‹É用钻æ?才能有效避免é’ÀL†çš„非正常失效ã€?br /> <strong>åQ?åQ‰æ´—液的使用:</strong><br /> 在砂层、卵砄¡Ÿ³å±‚中钻进æ—?应用优质泥浆作冲‹z—液。惔‹¹†åœ¨é’ÀL†å¤–壁形成泥皮,èµäh¶¦æ»‘作ç”?能减ž®é’»˜q›æ‰­çŸ©å‡ž®‘钻杆磨æ?对保护钻杆è“v到非帔R‡è¦é’»æ†çš„作用<br /> <strong>åQ?åQ‰é’»æ†çš„‹‚€æŸ¥ï¼š</strong><br /> é’ÀL†ä½¿ç”¨ä¸€ŒD‰|—¶é—´åŽ,ž®±åº”‹‚€æŸ¥é’»æ†çš„¼‚¨æŸã€å¼¯æ›ŒÓ€è¡¨é¢åˆ’痕等情況åQŒè¦åŠæ—¶æ·˜æ±°¼‚¨æŸ˜q‡åº¦ã€æ˜Žæ˜‘Ö¼¯æ›²åŠè¡¨é¢åˆ’痕较深的钻杆。尤其要仔细‹‚€æŸ¥é•¦é”»è¿‡æ¸¡æ®µçš„磨损情æ³?该处往往更易被磨损变薄而断è£?br /> <p> 以上便是é’ÀL†å¤±æ•ˆçš„措施,希望对大家有所帮助åQè‹¥æœ‰å…¶å®ƒç–‘问,也可以咨询我们~ </p></h3> <p><a href="http://www.couivm.tw">çŸÏxÑaé’ÀL†</a><font color="red">,</font><a href="http://www.couivm.tw">˜q›å£é’ÀL†</a><font color="red">,</font><a href="http://www.couivm.tw">地质é’ÀL†ç”Ÿäñ”厂家</a>-<a 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