1. 制定標準的(de)意義


   本標準為(wei)首次制(zhi)定,主編單位為(wei)寶(bao)雞石油鋼管(guan)有限責任(ren)公司。


   連(lian)續(xu)油(you)管(guan)(guan)(guan)(Coiled Tubing,CT)也(ye)稱撓性管(guan)(guan)(guan)、蛇形(xing)管(guan)(guan)(guan)或盤(pan)管(guan)(guan)(guan),是一種(zhong)強度(du)高(gao)(gao)、塑性好的高(gao)(gao)附加(jia)(jia)(jia)值(zhi)綠色產(chan)(chan)(chan)品,單根(gen)長(chang)度(du)已超過7000m,在生產(chan)(chan)(chan)線連(lian)續(xu)生產(chan)(chan)(chan)并(bing)按一定長(chang)度(du)纏(chan)繞在卷(juan)筒(tong)上交付使(shi)(shi)用,作(zuo)業時卷(juan)筒(tong)上的管(guan)(guan)(guan)子可(ke)反復收放(fang)、使(shi)(shi)用。由于(yu)連(lian)續(xu)油(you)管(guan)(guan)(guan)作(zuo)業具有占地(di)面積小、效率高(gao)(gao)、拆裝方便、保護油(you)層(ceng)、增(zeng)加(jia)(jia)(jia)產(chan)(chan)(chan)量、安(an)全環(huan)保和(he)使(shi)(shi)用范圍廣等諸多(duo)普通油(you)管(guan)(guan)(guan)不(bu)可(ke)比擬的優點,已廣泛應用于(yu)油(you)氣井(jing)(jing)(jing)修井(jing)(jing)(jing)、完井(jing)(jing)(jing)、測(ce)井(jing)(jing)(jing)、增(zeng)注、老井(jing)(jing)(jing)重鉆(zhan)、加(jia)(jia)(jia)深、側(ce)鉆(zhan)、小井(jing)(jing)(jing)眼、欠平衡、過平衡、水平井(jing)(jing)(jing)鉆(zhan)井(jing)(jing)(jing)以及(ji)常(chang)規管(guan)(guan)(guan)道集輸和(he)生產(chan)(chan)(chan)油(you)管(guan)(guan)(guan)等多(duo)種(zhong)作(zuo)業。因(yin)此連(lian)續(xu)油(you)管(guan)(guan)(guan)及(ji)其作(zuo)業技術在國際上得到了快(kuai)速(su)發展。


   長期以來,連(lian)(lian)續(xu)油(you)管材料和產(chan)(chan)(chan)品制(zhi)造(zao)技(ji)(ji)術(shu)一直被(bei)美國(guo)(guo)(guo)(guo)壟斷,進口周期長、價格高,嚴重(zhong)(zhong)阻礙了我(wo)(wo)國(guo)(guo)(guo)(guo)連(lian)(lian)續(xu)油(you)管作業(ye)技(ji)(ji)術(shu)應(ying)(ying)用(yong)和發展。為滿足石(shi)(shi)油(you)工業(ye)發展的(de)(de)需要(yao),2006年寶雞鋼管牽頭承擔的(de)(de)連(lian)(lian)續(xu)管項目列入(ru)國(guo)(guo)(guo)(guo)家(jia)(jia)“863”計(ji)劃和中國(guo)(guo)(guo)(guo)石(shi)(shi)油(you)天(tian)然氣集團公司重(zhong)(zhong)大科技(ji)(ji)專項,2009年打破國(guo)(guo)(guo)(guo)外封鎖壟斷,成功使我(wo)(wo)國(guo)(guo)(guo)(guo)成為全世界第二(er)個掌握(wo)連(lian)(lian)續(xu)油(you)管生產(chan)(chan)(chan)技(ji)(ji)術(shu)的(de)(de)國(guo)(guo)(guo)(guo)家(jia)(jia),全面實現連(lian)(lian)續(xu)油(you)管國(guo)(guo)(guo)(guo)產(chan)(chan)(chan)化。本標(biao)準制(zhi)定前,我(wo)(wo)國(guo)(guo)(guo)(guo)沒有(you)連(lian)(lian)續(xu)油(you)管國(guo)(guo)(guo)(guo)家(jia)(jia)標(biao)準,而標(biao)準對(dui)高新技(ji)(ji)術(shu)產(chan)(chan)(chan)品的(de)(de)研發和推(tui)廣(guang)應(ying)(ying)用(yong)具(ju)有(you)重(zhong)(zhong)要(yao)作用(yong)。本標(biao)準有(you)利于推(tui)廣(guang)應(ying)(ying)用(yong)連(lian)(lian)續(xu)油(you)管產(chan)(chan)(chan)品及(ji)相關作業(ye)技(ji)(ji)術(shu)。


2. 主要技術(shu)內容


   連(lian)續(xu)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)外徑(jing)(jing)尺寸范圍為(wei)19.1~88.9mm;連(lian)續(xu)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)盡可能(neng)少的(de)(de)(de)(de)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)對(dui)接(jie)環焊(han)(han)縫(feng),單(dan)個(ge)(ge)對(dui)接(jie)鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)段的(de)(de)(de)(de)長度(du)應(ying)(ying)不(bu)小(xiao)小(xiao)于61m。鋼(gang)應(ying)(ying)采(cai)(cai)用細化(hua)(hua)晶粒工藝制(zhi)造(zao),可適(shi)當加入合金(jin)(jin)或(huo)(huo)(huo)(huo)微合金(jin)(jin)元素(su),采(cai)(cai)用全流程潔凈化(hua)(hua)、均(jun)質化(hua)(hua)煉鋼(gang);鋼(gang)級為(wei)CT55、CT60、CT70、CT80、CT90、CT100、CT110等(deng)7個(ge)(ge)鋼(gang)級。鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)采(cai)(cai)用高頻感應(ying)(ying)焊(han)(han)(HFI)或(huo)(huo)(huo)(huo)激光(guang)焊(han)(han)工藝進(jin)行(xing)連(lian)續(xu)縱向焊(han)(han)縫(feng)焊(han)(han)接(jie),不(bu)接(jie)受沒有進(jin)行(xing)適(shi)當熱處理的(de)(de)(de)(de)冷拔(ba)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)。變徑(jing)(jing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)柱可采(cai)(cai)用對(dui)焊(han)(han)工藝將(jiang)兩種或(huo)(huo)(huo)(huo)兩種以上壁厚(hou)的(de)(de)(de)(de)鋼(gang)帶(dai)對(dui)接(jie)后生(sheng)(sheng)產(chan),或(huo)(huo)(huo)(huo)采(cai)(cai)用對(dui)焊(han)(han)工藝將(jiang)兩種或(huo)(huo)(huo)(huo)兩種以上壁厚(hou)的(de)(de)(de)(de)鋼(gang)帶(dai)與一(yi)條或(huo)(huo)(huo)(huo)多條壁厚(hou)連(lian)續(xu)變化(hua)(hua)的(de)(de)(de)(de)鋼(gang)帶(dai)對(dui)接(jie)后生(sheng)(sheng)產(chan);或(huo)(huo)(huo)(huo)采(cai)(cai)用管(guan)(guan)(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)對(dui)焊(han)(han)工藝將(jiang)連(lian)續(xu)生(sheng)(sheng)產(chan)的(de)(de)(de)(de)單(dan)一(yi)壁厚(hou)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)段連(lian)接(jie)到(dao)壁厚(hou)漸增/漸減的(de)(de)(de)(de)其(qi)他管(guan)(guan)(guan)(guan)(guan)(guan)(guan)段上。拉伸(shen)力(li)學性(xing)能(neng)要求(qiu)(qiu)(qiu)包(bao)括(kuo):規(gui)(gui)定(ding)總延(yan)伸(shen)強度(du)或(huo)(huo)(huo)(huo)規(gui)(gui)定(ding)殘余延(yan)伸(shen)強度(du)R10.5或(huo)(huo)(huo)(huo)R,0.2(要求(qiu)(qiu)(qiu)最小(xiao)值和(he)最大值),抗拉強度(du)(要求(qiu)(qiu)(qiu)最小(xiao)值),原始標距為(wei)50mm試(shi)樣的(de)(de)(de)(de)最小(xiao)斷后伸(shen)長率。硬度(du)要求(qiu)(qiu)(qiu)包(bao)括(kuo)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)體和(he)焊(han)(han)縫(feng)洛(luo)氏硬度(du)(HRC)。晶粒度(du)應(ying)(ying)為(wei)8級或(huo)(huo)(huo)(huo)更細。工藝性(xing)能(neng)包(bao)括(kuo)壓扁和(he)擴口(kou)(kou)。每個(ge)(ge)單(dan)根鋼(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)兩端焊(han)(han)縫(feng)橫截面(mian)金(jin)(jin)相檢(jian)驗,觀察母材金(jin)(jin)屬和(he)焊(han)(han)縫(feng)區(qu)域的(de)(de)(de)(de)微觀組織。其(qi)他檢(jian)驗要求(qiu)(qiu)(qiu)包(bao)括(kuo)靜水壓試(shi)驗、通(tong)徑(jing)(jing)(球規(gui)(gui))試(shi)驗、無(wu)損檢(jian)測(ce)等(deng)。連(lian)續(xu)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)柱包(bao)裝前(qian)應(ying)(ying)涂(tu)敷外保護(hu)膜(mo)。經購方(fang)和(he)制(zhi)造(zao)商協商,應(ying)(ying)在連(lian)續(xu)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)內(nei)充滿干(gan)燥(zao)的(de)(de)(de)(de)不(bu)反應(ying)(ying)氣體,并密(mi)封端口(kou)(kou)。


3. 國內外(wai)標(biao)準對比(bi)及標(biao)準水平


   和(he)美國(guo)石油(you)學會(hui)《油(you)氣井用(yong)連續管作業推(tui)薦作法》(API RP5C7)、《連續油(you)管規范》(API Spec 5ST)相比,本標(biao)(biao)準涉及全部指標(biao)(biao)與(yu)國(guo)外先(xian)進(jin)標(biao)(biao)準水平(ping)相當,部分指標(biao)(biao)水平(ping)高(gao)于國(guo)外同類標(biao)(biao)準要(yao)求(qiu),本標(biao)(biao)準水平(ping)為國(guo)際(ji)先(xian)進(jin)水平(ping)。





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