石油防砂(sha)管沖縫(feng)(feng)能夠(gou)沿(yan)管體軸線方向(xiang)，選用直縫(feng)(feng)焊接(jie)；獨有的沖縫(feng)(feng)螺旋散布，選用螺旋焊接(jie)構成，顯著提高了過濾套強(qiang)度。在部(bu)(bu)分受(shou)外(wai)(wai)部(bu)(bu)揉捏時，受(shou)壓部(bu)(bu)位在外(wai)(wai)力效果(guo)下，空(kong)隙減小(xiao)或許閉合，確保防砂(sha)的可靠(kao)性。 選用精細(xi)沖孔技能。

　　不(bu)銹鋼沖(chong)縫(feng)(feng)(feng)過濾套的沖(chong)縫(feng)(feng)(feng)開(kai)口在(zai)旁(pang)邊面，下降砂(sha)層(ceng)對沖(chong)縫(feng)(feng)(feng)篩管的直接(jie)沖(chong)蝕效果。沖(chong)縫(feng)(feng)(feng)空(kong)隙(xi)加(jia)工規模(mo)在(zai)20mm- 0.7mm之(zhi)間(jian)。沖(chong)縫(feng)(feng)(feng)空(kong)隙(xi)均勻度能確(que)保(bao)在(zai)0.015mm的加(jia)工差錯規模(mo)之(zhi)內，確(que)保(bao)其過濾精度的要求。

　　選用(yong)(yong)高密沖(chong)孔技能(neng)，有用(yong)(yong)開(kai)孔縫長(chang)是一(yi)般割縫管(guan)(guan)的(de)(de)3-5倍，一(yi)般沖(chong)縫篩(shai)管(guan)(guan)的(de)(de)2-3倍。中(zhong)(zhong)心管(guan)(guan)共(gong)同(tong)螺(luo)旋布(bu)孔高密沖(chong)縫篩(shai)管(guan)(guan)的(de)(de)中(zhong)(zhong)心管(guan)(guan)選用(yong)(yong)規(gui)范(fan)油、套管(guan)(guan)，中(zhong)(zhong)心管(guan)(guan)選用(yong)(yong)螺(luo)旋打孔方式，減少(shao)了管(guan)(guan)體橫截(jie)面(mian)的(de)(de)開(kai)孔面(mian)積，在確保(bao)管(guan)(guan)體全(quan)體過流面(mian)積的(de)(de)基礎(chu)上。

　　使(shi)中心管(guan)強度得到(dao)最大極限的保存。地(di)(di)層砂被阻撓在(zai)沖(chong)縫(feng)篩管(guan)外，地(di)(di)層中的油，氣或水通過沖(chong)縫(feng)空隙，再通過鉆削孔進(jin)入(ru)到(dao)篩管(guan)內。到(dao)達(da)防砂的途徑。