1. 制定標準的意義
本標(biao)準為(wei)首次制定，主編單(dan)位為(wei)寶雞石(shi)油(you)鋼(gang)管有限責(ze)任(ren)公司。
連(lian)續(xu)油(you)(you)管(guan)(guan)（Coiled Tubing，CT）也(ye)稱撓性管(guan)(guan)、蛇形(xing)管(guan)(guan)或盤管(guan)(guan)，是(shi)一(yi)(yi)種(zhong)強度高、塑(su)性好(hao)的(de)高附加值(zhi)綠(lv)色產(chan)品，單根長度已超過7000m，在(zai)(zai)生產(chan)線連(lian)續(xu)生產(chan)并按一(yi)(yi)定長度纏繞在(zai)(zai)卷(juan)筒(tong)上(shang)交付(fu)使(shi)用，作(zuo)業(ye)時(shi)卷(juan)筒(tong)上(shang)的(de)管(guan)(guan)子(zi)可反復收放(fang)、使(shi)用。由(you)于(yu)連(lian)續(xu)油(you)(you)管(guan)(guan)作(zuo)業(ye)具(ju)有(you)占地面積小、效率高、拆(chai)裝(zhuang)方便、保護油(you)(you)層、增加產(chan)量、安全環(huan)保和(he)使(shi)用范圍廣等諸多(duo)普通(tong)油(you)(you)管(guan)(guan)不可比擬的(de)優點，已廣泛應用于(yu)油(you)(you)氣井(jing)(jing)修(xiu)井(jing)(jing)、完井(jing)(jing)、測井(jing)(jing)、增注、老井(jing)(jing)重鉆、加深、側鉆、小井(jing)(jing)眼、欠(qian)平衡(heng)、過平衡(heng)、水(shui)平井(jing)(jing)鉆井(jing)(jing)以及(ji)常規管(guan)(guan)道集輸和(he)生產(chan)油(you)(you)管(guan)(guan)等多(duo)種(zhong)作(zuo)業(ye)。因此連(lian)續(xu)油(you)(you)管(guan)(guan)及(ji)其作(zuo)業(ye)技(ji)術在(zai)(zai)國(guo)際上(shang)得(de)到了快速發展(zhan)。
長期(qi)以來，連(lian)(lian)(lian)續油(you)(you)管(guan)材(cai)料和產(chan)(chan)品制(zhi)造技(ji)(ji)術一直被美國(guo)壟斷，進口周(zhou)期(qi)長、價格高，嚴重(zhong)(zhong)阻礙(ai)了我國(guo)連(lian)(lian)(lian)續油(you)(you)管(guan)作業技(ji)(ji)術應(ying)用和發展。為(wei)滿足石油(you)(you)工(gong)業發展的需要，2006年(nian)(nian)寶雞鋼管(guan)牽頭(tou)承擔的連(lian)(lian)(lian)續管(guan)項(xiang)目列入國(guo)家“863”計(ji)劃和中國(guo)石油(you)(you)天然氣(qi)集團公司重(zhong)(zhong)大科(ke)技(ji)(ji)專項(xiang)，2009年(nian)(nian)打破國(guo)外封鎖壟斷，成(cheng)(cheng)功(gong)使(shi)我國(guo)成(cheng)(cheng)為(wei)全世界(jie)第(di)二(er)個(ge)掌(zhang)握連(lian)(lian)(lian)續油(you)(you)管(guan)生產(chan)(chan)技(ji)(ji)術的國(guo)家，全面實現連(lian)(lian)(lian)續油(you)(you)管(guan)國(guo)產(chan)(chan)化。本標(biao)準制(zhi)定(ding)前(qian)，我國(guo)沒有(you)連(lian)(lian)(lian)續油(you)(you)管(guan)國(guo)家標(biao)準，而(er)標(biao)準對高新技(ji)(ji)術產(chan)(chan)品的研發和推廣應(ying)用具有(you)重(zhong)(zhong)要作用。本標(biao)準有(you)利于推廣應(ying)用連(lian)(lian)(lian)續油(you)(you)管(guan)產(chan)(chan)品及相(xiang)關作業技(ji)(ji)術。
2. 主要技術內(nei)容(rong)
連(lian)續(xu)油管(guan)(guan)(guan)(guan)(guan)外徑尺寸范圍為19.1～88.9mm；連(lian)續(xu)油管(guan)(guan)(guan)(guan)(guan)盡可(ke)(ke)能少(shao)的(de)(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)對(dui)(dui)(dui)接(jie)環焊(han)縫(feng)，單個對(dui)(dui)(dui)接(jie)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)段的(de)(de)(de)長度應不(bu)小(xiao)(xiao)小(xiao)(xiao)于61m。鋼(gang)(gang)應采(cai)(cai)用(yong)細化晶粒(li)工(gong)(gong)(gong)藝制造，可(ke)(ke)適當加入合(he)金或(huo)(huo)(huo)(huo)微合(he)金元素，采(cai)(cai)用(yong)全(quan)流程潔凈化、均(jun)質化煉(lian)鋼(gang)(gang)；鋼(gang)(gang)級為CT55、CT60、CT70、CT80、CT90、CT100、CT110等7個鋼(gang)(gang)級。鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)采(cai)(cai)用(yong)高頻感應焊(han)（HFI）或(huo)(huo)(huo)(huo)激(ji)光焊(han)工(gong)(gong)(gong)藝進行(xing)連(lian)續(xu)縱(zong)向焊(han)縫(feng)焊(han)接(jie)，不(bu)接(jie)受沒(mei)有進行(xing)適當熱處(chu)理的(de)(de)(de)冷拔(ba)管(guan)(guan)(guan)(guan)(guan)。變徑管(guan)(guan)(guan)(guan)(guan)柱可(ke)(ke)采(cai)(cai)用(yong)對(dui)(dui)(dui)焊(han)工(gong)(gong)(gong)藝將兩(liang)種或(huo)(huo)(huo)(huo)兩(liang)種以上(shang)壁厚(hou)(hou)的(de)(de)(de)鋼(gang)(gang)帶(dai)對(dui)(dui)(dui)接(jie)后(hou)生產，或(huo)(huo)(huo)(huo)采(cai)(cai)用(yong)對(dui)(dui)(dui)焊(han)工(gong)(gong)(gong)藝將兩(liang)種或(huo)(huo)(huo)(huo)兩(liang)種以上(shang)壁厚(hou)(hou)的(de)(de)(de)鋼(gang)(gang)帶(dai)與一條或(huo)(huo)(huo)(huo)多條壁厚(hou)(hou)連(lian)續(xu)變化的(de)(de)(de)鋼(gang)(gang)帶(dai)對(dui)(dui)(dui)接(jie)后(hou)生產；或(huo)(huo)(huo)(huo)采(cai)(cai)用(yong)管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)對(dui)(dui)(dui)焊(han)工(gong)(gong)(gong)藝將連(lian)續(xu)生產的(de)(de)(de)單一壁厚(hou)(hou)管(guan)(guan)(guan)(guan)(guan)段連(lian)接(jie)到(dao)壁厚(hou)(hou)漸(jian)增／漸(jian)減的(de)(de)(de)其他管(guan)(guan)(guan)(guan)(guan)段上(shang)。拉伸力學性能要求(qiu)包(bao)括(kuo)：規定(ding)總(zong)延伸強度或(huo)(huo)(huo)(huo)規定(ding)殘(can)余延伸強度R10.5或(huo)(huo)(huo)(huo)R,0.2（要求(qiu)最(zui)小(xiao)(xiao)值和(he)(he)最(zui)大值），抗(kang)拉強度（要求(qiu)最(zui)小(xiao)(xiao)值），原(yuan)始標距(ju)為50mm試(shi)樣的(de)(de)(de)最(zui)小(xiao)(xiao)斷后(hou)伸長率。硬(ying)度要求(qiu)包(bao)括(kuo)管(guan)(guan)(guan)(guan)(guan)體和(he)(he)焊(han)縫(feng)洛氏硬(ying)度（HRC）。晶粒(li)度應為8級或(huo)(huo)(huo)(huo)更細。工(gong)(gong)(gong)藝性能包(bao)括(kuo)壓(ya)扁和(he)(he)擴口。每個單根鋼(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)兩(liang)端(duan)焊(han)縫(feng)橫截面(mian)金相(xiang)檢(jian)(jian)驗(yan)(yan)，觀察母(mu)材金屬(shu)和(he)(he)焊(han)縫(feng)區域的(de)(de)(de)微觀組織。其他檢(jian)(jian)驗(yan)(yan)要求(qiu)包(bao)括(kuo)靜水壓(ya)試(shi)驗(yan)(yan)、通徑（球規）試(shi)驗(yan)(yan)、無損檢(jian)(jian)測(ce)等。連(lian)續(xu)油管(guan)(guan)(guan)(guan)(guan)柱包(bao)裝前應涂(tu)敷外保護膜。經購(gou)方和(he)(he)制造商協商，應在(zai)連(lian)續(xu)油管(guan)(guan)(guan)(guan)(guan)內(nei)充滿干燥的(de)(de)(de)不(bu)反應氣(qi)體，并密(mi)封端(duan)口。
3. 國內外標準(zhun)對比及標準(zhun)水(shui)平
和美國石油學會(hui)《油氣井(jing)用(yong)連續(xu)管(guan)(guan)作業推(tui)薦作法》（API RP5C7）、《連續(xu)油管(guan)(guan)規范》（API Spec 5ST）相比，本標(biao)準(zhun)涉及全部指(zhi)標(biao)與國外先進(jin)標(biao)準(zhun)水(shui)平(ping)(ping)(ping)相當(dang)，部分指(zhi)標(biao)水(shui)平(ping)(ping)(ping)高于國外同類標(biao)準(zhun)要求，本標(biao)準(zhun)水(shui)平(ping)(ping)(ping)為國際先進(jin)水(shui)平(ping)(ping)(ping)。
