CAJ | 학술논문

为了解决海上油气井出砂问题，克服水力冲砂技术及传统抽砂工艺的不足，对机械式抽砂管柱结构及作业工艺进行了改进。管柱包括顺序相连的滑套、上单流阀、捞砂泵、装砂筒、下单流阀和引鞋。单次下入后，反复上提管柱吸砂，下放排液，可实现大容量捞砂，遇阻后可通过旋转管柱实现破除砂砾胶结，解决砂卡问题。该技术的关键工具捞砂泵采用独特 V 形密封和耐磨环结构，密封效果好，单次作业后磨损轻微。经现场应用证实，该工艺管柱遇砂后有效进尺均超过1．83 m，88．9 mm（3英寸）油管内装砂高度均超过8．23 m，具有推广应用价值。
위료해결해상유기정출사문제，극복수력충사기술급전통추사공예적불족，대궤계식추사관주결구급작업공예진행료개진。관주포괄순서상련적활투、상단류벌、로사빙、장사통、하단류벌화인혜。단차하입후，반복상제관주흡사，하방배액，가실현대용량로사，우조후가통과선전관주실현파제사력효결，해결사잡문제。해기술적관건공구로사빙채용독특 V 형밀봉화내마배결구，밀봉효과호，단차작업후마손경미。경현장응용증실，해공예관주우사후유효진척균초과1．83 m，88．9 mm（3영촌）유관내장사고도균초과8．23 m，구유추엄응용개치。
Absttact:To solve problems of sand production in offshore oil and gas wells,and to overcome de-fects of hydraulic sand washing technique and traditional mechanical sand pumping technique,an optimized mechanical sand pumping technique was developed.The string consists of sliding sleeve,upper check valve,sand pump,sand container,and lower check valve and guide shoe.The unique V-packing and wearing rings are adopted to ensure sealing effect and long life.Field appli-cation shows the optimized technique has effective footage of more than 1.83 m(6ft),and height of more than 8.23 m(27ft)in 88.9 mm(3 in)tubing,and is worth popularized.