CAJ | 학술논문

在处理井下事故特别是藏鱼头事故时，由于鱼头不居中，甚至贴在井径变化较大处，因此很难实施普通打捞。现场普遍采用可弯肘节和折弯钻杆的方式进行寻找落鱼，实施打捞，有可能多次折弯钻杆，造成浪费，甚至造成井下更复杂情况的发生。根据这一情况，设计了可调角度弯钻杆。可调角度弯钻杆由上接头、花键体、调整套、下接头等组成，通过调节调整套和花键体等机构，可实现弯钻杆0°~4°调节。已完成可调角度弯钻杆的样机制造，并在多口井中进行应用。结果表明，采用可调角度弯钻杆可有效实施藏鱼头打捞，井口调节方便，应用取得了成功；单井可节约近30万元。
재처리정하사고특별시장어두사고시，유우어두불거중，심지첩재정경변화교대처，인차흔난실시보통타로。현장보편채용가만주절화절만찬간적방식진행심조락어，실시타로，유가능다차절만찬간，조성낭비，심지조성정하경복잡정황적발생。근거저일정황，설계료가조각도만찬간。가조각도만찬간유상접두、화건체、조정투、하접두등조성，통과조절조정투화화건체등궤구，가실현만찬간0°~4°조절。이완성가조각도만찬간적양궤제조，병재다구정중진행응용。결과표명，채용가조각도만찬간가유효실시장어두타로，정구조절방편，응용취득료성공；단정가절약근30만원。
In the processing of downhole accidents especially reservoir head accident,the fish head was not in the middle of the hole,and even attached to the variation of well radius was big.Therefore it was very difficult to implement common fishing method.On the site flexible elbow joints and bending drill pipes were generally to use to look for the fish.It would bend drill pipes many times,then cause waste and even safety accidents.According to this situation,the adj ustable?angle bend drill pipe was designed.It consisted of top connection,spline body,adj ustable sleeve and lowercontact and so on.By adj usting spline body and adj ustable sleeve,0°~4°angle adj ustment could be finished.The model machine of the adj ustable?angle bend drill pipe had been manufactured and applied to many oil wells.The results showed that it was available that the adj ustable?angle bend drill pipe was applied to fish the fishing head,which was easy to adj ust the pipe on wellhead.The application was successful and 300 thousands could be saved per well.