CAJ | 학술논문

水平井均匀注汽管柱可以实现热采稠油水平井长水平段均匀受汽，改善注汽质量。但常规的均匀注汽管柱与常用的?73 mm油管比工具外径较大，使得整个均匀注汽管柱存在多处变径，易出现难以起出的问题，且配汽阀出汽位置正对筛管，存在注汽时刺坏筛管的风险。为此设计了由投球式安全丢手接头、小直径侧向配汽阀、小直径单流阀等工具组成的易起式防砂埋水平井均匀注汽管柱。配汽阀侧向出汽，杜绝了刺坏防砂筛管的风险；整个工具串外径小，无明显的变径段，降低了工具被砂埋无法起出的风险；配备了安全接头，管柱被埋后，可以实现丢手，起出上部油管，再打捞处理下部油管。该工艺在出砂严重且采用筛管完井的稠油水平井具有良好的应用前景和推广价值。
수평정균균주기관주가이실현열채주유수평정장수평단균균수기，개선주기질량。단상규적균균주기관주여상용적?73 mm유관비공구외경교대，사득정개균균주기관주존재다처변경，역출현난이기출적문제，차배기벌출기위치정대사관，존재주기시자배사관적풍험。위차설계료유투구식안전주수접두、소직경측향배기벌、소직경단류벌등공구조성적역기식방사매수평정균균주기관주。배기벌측향출기，두절료자배방사사관적풍험；정개공구천외경소，무명현적변경단，강저료공구피사매무법기출적풍험；배비료안전접두，관주피매후，가이실현주수，기출상부유관，재타로처리하부유관。해공예재출사엄중차채용사관완정적주유수평정구유량호적응용전경화추엄개치。
The even steam injection string for horizontal well can realize even steaming in long horizontal section of horizontal well for thermal production heavy oil and improve steam injection quality. However, compared with the often used?73 mm tubing, the conventional even steam injection string is larger in outside diameter, so there are a number ofvariable diameter on the whole string and hence the string is hard to retrieve; in addition, the steam distribution valve is directly opposite the screen tube, so there exists the risk of screen washout while stream injection. For this reason, an easy-to-retrieve, anti-sand burial even steam injection string for horizontal well is developed, which is composed of ball-like safety release joint, small diameter lateral steam distribution valve and small diameter check valve, etc. The steam comes out of distribution valve on side oriifces, so avoiding the risk of screen washout;the outside diameter of the whole string is small without obvious diameter varieties, which reduces the risk of being unable to retrieve the string due to sand burial. The string is equipped with safe connections, so when the string is buried, the release can be realized to retrieve the upper tubing and then the lower tubing shall be ifshed. This technology enjoys a favorable prospect and promotional value in heavy oil horizontal wells with severe sand production and screen completion.