在(Zai)采(Cai)油(You)工(Gong)程(Cheng)中(Zhong)封(Feng)隔(Ge)器(Qi)用(Yong)来(Lai)分(Fen)层(Ceng)，(?)封(Feng)隔(Ge)器(Qi)上(Shang)设(She)计(Ji)有(You)采(Cai)油(You)通(Tong)道(Dao)，(?)坐(Zuo)封(Feng)时(Shi)，(?)活(Huo)塞(Sai)套(Tao)上(Shang)行(Xing)，(?)采(Cai)油(You)通(Tong)道(Dao)被(Bei)打(Da)开(Kai)；(?)坐(Zuo)封(Feng)后(Hou)，(?)上(Shang)层(Ceng)压(Ya)力(Li)作(Zuo)用(Yong)在(Zai)平(Ping)衡(Heng)活(Huo)塞(Sai)上(Shang)，(?)向(Xiang)上(Shang)推(Tui)胶(Jiao)筒(Tong)，(?)使(Shi)解(Jie)封(Feng)销(Xiao)钉(Ding)免(Mian)受(Shou)剪(Jian)切(Qie)力(Li)；(?)解(Jie)封(Feng)时(Shi)，(?)靠(Kao)胶(Jiao)筒(Tong)与(Yu)套(Tao)管(Guan)的(De)摩(Mo)擦(Ca)力(Li)剪(Jian)断(Duan)解(Jie)封(Feng)销(Xiao)钉(Ding)，(?)活(Huo)塞(Sai)套(Tao)下(Xia)行(Xing)，(?)关(Guan)闭(Bi)采(Cai)油(You)通(Tong)道(Dao)。(?)

优(You)点(Dian)

减(Jian)少(Shao)了(Liao)油(You)井(Jing)封(Feng)隔(Ge)器(Qi)堵(Du)水(Shui)施(Shi)工(Gong)工(Gong)序(Xu)，(?)能(Neng)方(Fang)便(Bian)地(Di)实(Shi)现(Xian)不(Bu)压(Ya)井(Jing)不(Bu)放(Fang)喷(Pen)作(Zuo)业(Ye)，(?)并(Bing)且(Qie)能(Neng)双(Shuang)向(Xiang)承(Cheng)受(Shou)高(Gao)压(Ya)，(?)使(Shi)用(Yong)寿(Shou)命(Ming)长(Chang)。(?)油(You)田(Tian)常(Chang)用(Yong)的(De)皮(Pi)碗(Wan)封(Feng)隔(Ge)器(Qi)为(Wei)自(Zi)封(Feng)式(Shi)。(?)其(Qi)皮(Pi)碗(Wan)外(Wai)径(Jing)大(Da)于(Yu)套(Tao)管(Guan)内(Nei)径(Jing)，(?)靠(Kao)皮(Pi)碗(Wan)与(Yu)套(Tao)管(Guan)的(De)过(Guo)盈(Ying)配(Pei)合(He)来(Lai)实(Shi)现(Xian)封(Feng)隔(Ge)器(Qi)的(De)密(Mi)封(Feng)，(?)下(Xia)井(Jing)时(Shi)阻(Zu)力(Li)大(Da)，(?)皮(Pi)碗(Wan)易(Yi)磨(Mo)损(Sun)和(He)刮(Gua)坏(Huai)，(?)从(Cong)而(?)失(Shi)去(Qu)密(Mi)封(Feng)性(Xing)。(?)随(Sui)着(Zhuo)对(Dui)油(You)层(Ceng)的(De)深(Shen)入(Ru)认(Ren)识(Shi)，(?)厚(Hou)油(You)层(Ceng)挖(Wa)潜(Qian)势(Shi)在(Zai)必(Bi)行(Xing)，(?)同(Tong)时(Shi)也(Ye)对(Dui)井(Jing)下(Xia)封(Feng)隔(Ge)器(Qi)提(Ti)出(Chu)了(Liao)更(Geng)高(Gao)的(De)要(Yao)求(Qiu)。(?)

使(Shi)用(Yong)范(Fan)围(Wei)

广(Guang)泛(Fan)应(Ying)用(Yong)于(Yu)钻(Zuan)井(Jing)、(?)固(Gu)井(Jing)、(?)测(Ce)试(Shi)、(?)完(Wan)井(Jing)等(Deng)作(Zuo)业(Ye)中(Zhong)。(?)还(Huan)用(Yong)于(Yu)井(Jing)下(Xia)石(Shi)油(You)作(Zuo)业(Ye)中(Zhong)。(?)

用(Yong)途(Tu)

如(Ru)固(Gu)井(Jing)过(Guo)程(Cheng)采(Cai)用(Yong)的(De)套(Tao)管(Guan)外(Wai)封(Feng)隔(Ge)器(Qi)，(?)用(Yong)以(Yi)封(Feng)隔(Ge)套(Tao)管(Guan)外(Wai)与(Yu)井(Jing)眼(Yan)之(Zhi)间(Jian)的(De)环(Huan)空(Kong)形(Xing)成(Cheng)久(Jiu)性(Xing)桥(Qiao)塞(Sai)，(?)防(Fang)止(Zhi)固(Gu)井(Jing)过(Guo)程(Cheng)因(Yin)水(Shui)泥(Ni)固(Gu)化(Hua)失(Shi)重(Zhong)，(?)使(Shi)地(Di)层(Ceng)油(You)、(?)气(Qi)、(?)水(Shui)上(Shang)窜(Cuan)。(?)