1. 制定標準的意義
本標準為首次(ci)制定，主編單位(wei)為寶(bao)雞(ji)石油鋼管有(you)限責任公(gong)司。
連續油(you)(you)(you)管(guan)(guan)(guan)(guan)（Coiled Tubing，CT）也稱撓(nao)性管(guan)(guan)(guan)(guan)、蛇形管(guan)(guan)(guan)(guan)或盤管(guan)(guan)(guan)(guan)，是一(yi)種(zhong)強(qiang)度高(gao)、塑(su)性好的高(gao)附加(jia)值綠(lv)色產(chan)品，單根長度已超過7000m，在(zai)生(sheng)產(chan)線連續生(sheng)產(chan)并按(an)一(yi)定(ding)長度纏繞在(zai)卷(juan)筒上交付使用(yong)，作業時卷(juan)筒上的管(guan)(guan)(guan)(guan)子(zi)可反復收放(fang)、使用(yong)。由于(yu)連續油(you)(you)(you)管(guan)(guan)(guan)(guan)作業具(ju)有占地面積(ji)小(xiao)、效率高(gao)、拆裝方便、保護油(you)(you)(you)層、增(zeng)加(jia)產(chan)量、安全環保和使用(yong)范圍廣等諸多普通油(you)(you)(you)管(guan)(guan)(guan)(guan)不可比擬的優點(dian)，已廣泛應(ying)用(yong)于(yu)油(you)(you)(you)氣井修井、完井、測(ce)井、增(zeng)注、老井重(zhong)鉆(zhan)(zhan)、加(jia)深、側(ce)鉆(zhan)(zhan)、小(xiao)井眼(yan)、欠平衡(heng)、過平衡(heng)、水平井鉆(zhan)(zhan)井以(yi)及(ji)常規管(guan)(guan)(guan)(guan)道(dao)集(ji)輸和生(sheng)產(chan)油(you)(you)(you)管(guan)(guan)(guan)(guan)等多種(zhong)作業。因此連續油(you)(you)(you)管(guan)(guan)(guan)(guan)及(ji)其作業技術在(zai)國際上得到了快速發展。
長期(qi)以來(lai)，連續(xu)油(you)管(guan)(guan)(guan)材料和(he)(he)產品制(zhi)造技(ji)(ji)術(shu)一直(zhi)被(bei)美國(guo)(guo)壟(long)斷(duan)，進口周期(qi)長、價格(ge)高(gao)，嚴重(zhong)阻(zu)礙了我國(guo)(guo)連續(xu)油(you)管(guan)(guan)(guan)作業技(ji)(ji)術(shu)應用(yong)和(he)(he)發(fa)展。為滿足石(shi)油(you)工業發(fa)展的需要，2006年寶(bao)雞鋼管(guan)(guan)(guan)牽頭承(cheng)擔(dan)的連續(xu)管(guan)(guan)(guan)項目(mu)列入國(guo)(guo)家“863”計劃(hua)和(he)(he)中國(guo)(guo)石(shi)油(you)天然氣(qi)集(ji)團公(gong)司重(zhong)大科技(ji)(ji)專項，2009年打破國(guo)(guo)外(wai)封鎖壟(long)斷(duan)，成功使我國(guo)(guo)成為全世界第二(er)個掌(zhang)握連續(xu)油(you)管(guan)(guan)(guan)生產技(ji)(ji)術(shu)的國(guo)(guo)家，全面實現連續(xu)油(you)管(guan)(guan)(guan)國(guo)(guo)產化。本標(biao)準(zhun)制(zhi)定(ding)前，我國(guo)(guo)沒有(you)(you)(you)連續(xu)油(you)管(guan)(guan)(guan)國(guo)(guo)家標(biao)準(zhun)，而標(biao)準(zhun)對高(gao)新(xin)技(ji)(ji)術(shu)產品的研發(fa)和(he)(he)推廣應用(yong)具有(you)(you)(you)重(zhong)要作用(yong)。本標(biao)準(zhun)有(you)(you)(you)利于推廣應用(yong)連續(xu)油(you)管(guan)(guan)(guan)產品及相關作業技(ji)(ji)術(shu)。
2. 主要(yao)技(ji)術內(nei)容(rong)
連(lian)(lian)續(xu)油(you)(you)管(guan)(guan)(guan)(guan)外(wai)徑(jing)尺寸范圍(wei)為19.1～88.9mm；連(lian)(lian)續(xu)油(you)(you)管(guan)(guan)(guan)(guan)盡(jin)可能少的(de)(de)(de)(de)鋼(gang)(gang)管(guan)(guan)(guan)(guan)對(dui)(dui)接(jie)(jie)(jie)環焊縫(feng)，單個(ge)對(dui)(dui)接(jie)(jie)(jie)鋼(gang)(gang)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)段的(de)(de)(de)(de)長度(du)應(ying)(ying)(ying)不(bu)小小于(yu)61m。鋼(gang)(gang)應(ying)(ying)(ying)采(cai)用(yong)(yong)(yong)(yong)細(xi)化晶粒工藝制造(zao)，可適(shi)當(dang)加入合金或(huo)微合金元素，采(cai)用(yong)(yong)(yong)(yong)全流程(cheng)潔凈(jing)化、均(jun)質化煉鋼(gang)(gang)；鋼(gang)(gang)級(ji)為CT55、CT60、CT70、CT80、CT90、CT100、CT110等7個(ge)鋼(gang)(gang)級(ji)。鋼(gang)(gang)管(guan)(guan)(guan)(guan)采(cai)用(yong)(yong)(yong)(yong)高頻感(gan)應(ying)(ying)(ying)焊（HFI）或(huo)激光焊工藝進行(xing)連(lian)(lian)續(xu)縱向(xiang)焊縫(feng)焊接(jie)(jie)(jie)，不(bu)接(jie)(jie)(jie)受沒有進行(xing)適(shi)當(dang)熱處理(li)的(de)(de)(de)(de)冷拔管(guan)(guan)(guan)(guan)。變徑(jing)管(guan)(guan)(guan)(guan)柱可采(cai)用(yong)(yong)(yong)(yong)對(dui)(dui)焊工藝將兩(liang)種(zhong)(zhong)或(huo)兩(liang)種(zhong)(zhong)以上(shang)壁(bi)(bi)(bi)厚的(de)(de)(de)(de)鋼(gang)(gang)帶對(dui)(dui)接(jie)(jie)(jie)后生產，或(huo)采(cai)用(yong)(yong)(yong)(yong)對(dui)(dui)焊工藝將兩(liang)種(zhong)(zhong)或(huo)兩(liang)種(zhong)(zhong)以上(shang)壁(bi)(bi)(bi)厚的(de)(de)(de)(de)鋼(gang)(gang)帶與一條或(huo)多條壁(bi)(bi)(bi)厚連(lian)(lian)續(xu)變化的(de)(de)(de)(de)鋼(gang)(gang)帶對(dui)(dui)接(jie)(jie)(jie)后生產；或(huo)采(cai)用(yong)(yong)(yong)(yong)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)對(dui)(dui)焊工藝將連(lian)(lian)續(xu)生產的(de)(de)(de)(de)單一壁(bi)(bi)(bi)厚管(guan)(guan)(guan)(guan)段連(lian)(lian)接(jie)(jie)(jie)到(dao)壁(bi)(bi)(bi)厚漸增／漸減的(de)(de)(de)(de)其他管(guan)(guan)(guan)(guan)段上(shang)。拉伸(shen)力學性能要(yao)求(qiu)包(bao)括：規定總延伸(shen)強度(du)或(huo)規定殘余延伸(shen)強度(du)R10.5或(huo)R,0.2（要(yao)求(qiu)最小值(zhi)(zhi)和(he)最大值(zhi)(zhi)），抗拉強度(du)（要(yao)求(qiu)最小值(zhi)(zhi)），原(yuan)始標距為50mm試樣的(de)(de)(de)(de)最小斷(duan)后伸(shen)長率。硬度(du)要(yao)求(qiu)包(bao)括管(guan)(guan)(guan)(guan)體和(he)焊縫(feng)洛氏硬度(du)（HRC）。晶粒度(du)應(ying)(ying)(ying)為8級(ji)或(huo)更(geng)細(xi)。工藝性能包(bao)括壓扁和(he)擴口。每(mei)個(ge)單根鋼(gang)(gang)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)兩(liang)端焊縫(feng)橫截面金相檢(jian)驗(yan)(yan)，觀察母材金屬和(he)焊縫(feng)區域的(de)(de)(de)(de)微觀組織。其他檢(jian)驗(yan)(yan)要(yao)求(qiu)包(bao)括靜水(shui)壓試驗(yan)(yan)、通徑(jing)（球(qiu)規）試驗(yan)(yan)、無損檢(jian)測等。連(lian)(lian)續(xu)油(you)(you)管(guan)(guan)(guan)(guan)柱包(bao)裝前應(ying)(ying)(ying)涂敷外(wai)保護膜。經購(gou)方(fang)和(he)制造(zao)商協(xie)商，應(ying)(ying)(ying)在連(lian)(lian)續(xu)油(you)(you)管(guan)(guan)(guan)(guan)內充(chong)滿(man)干燥的(de)(de)(de)(de)不(bu)反應(ying)(ying)(ying)氣體，并密封端口。
3. 國(guo)內外標準(zhun)對比及標準(zhun)水平
和美(mei)國石油(you)(you)學會(hui)《油(you)(you)氣井用(yong)連續(xu)管作業推(tui)薦作法(fa)》（API RP5C7）、《連續(xu)油(you)(you)管規范(fan)》（API Spec 5ST）相比(bi)，本標(biao)(biao)準涉及全部指標(biao)(biao)與國外(wai)先進標(biao)(biao)準水平相當(dang)，部分(fen)指標(biao)(biao)水平高于國外(wai)同類標(biao)(biao)準要求(qiu)，本標(biao)(biao)準水平為國際先進水平。
