CAJ | 학술논문

为进一步提高稠油蒸汽吞吐井的防砂有效期，从防砂工具、充填材料及充填工艺等方面对长效防砂技术进行了研究。根据充填口重复开关的思路设计了充填工具，并对其密封件的材料进行了优选，研制了长效防砂工具；利用多层覆膜方法研发了耐高温高强度覆膜支撑剂；采用多段塞充填工艺进行施工，形成了稠油油藏蒸汽吞吐井长效防砂技术。长效防砂工具密封件4轮次吞吐试验后，其压缩永久变形率小于55％、抗拉强度8.9 M Pa、拉断伸长率102％，能满足蒸汽吞吐井防砂要求；耐高温高强度覆膜支撑剂耐温300℃，4轮次吞吐试验后固结强度7.1 M Pa、渗透率96 D ，完全满足蒸汽吞吐井防砂生产要求；多段塞充填工艺降低了防砂成本及后期处理难度。稠油油藏蒸汽吞吐井长效防砂技术在胜利油田11口井进行了现场应用，平均防砂有效期长达930 d ，满足了蒸汽吞吐井对防砂的要求。
위진일보제고주유증기탄토정적방사유효기，종방사공구、충전재료급충전공예등방면대장효방사기술진행료연구。근거충전구중복개관적사로설계료충전공구，병대기밀봉건적재료진행료우선，연제료장효방사공구；이용다층복막방법연발료내고온고강도복막지탱제；채용다단새충전공예진행시공，형성료주유유장증기탄토정장효방사기술。장효방사공구밀봉건4륜차탄토시험후，기압축영구변형솔소우55％、항랍강도8.9 M Pa、랍단신장솔102％，능만족증기탄토정방사요구；내고온고강도복막지탱제내온300℃，4륜차탄토시험후고결강도7.1 M Pa、삼투솔96 D ，완전만족증기탄토정방사생산요구；다단새충전공예강저료방사성본급후기처리난도。주유유장증기탄토정장효방사기술재성리유전11구정진행료현장응용，평균방사유효기장체930 d ，만족료증기탄토정대방사적요구。
In order to prolong sand control validity for steam huff and puff wells in heavy oil reser-voirs ,sand control tools ,compaction material and packing technology were studied .Long-acting sand con-trol tool was developed with filling head repeatable switch and modified sealing element material ;high tem-perature resistant coated proppant with high strength was developed and multi stage packing was adopted in injection .These combined measures form the long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs .The sealing element of long-acting sand control tool can meet production requirements of multiple round steam huff and puff wells ,whose compression deformation is less than 55% ,extension strength reaches 8.9 MPa and the elongation at break is 102% after four rounds huff and puff experiments .High temperature resistant coated proppant can resist high temperature up to 300 ℃ ,having a consolidation strength of 7.1 M Pa and permeability of 96 Darcy after four rounds of steam huff and puff ,w hich fully meets the requirements of steam huff and puff production .M ultistage packing technology reduces cost and post-processing difficulty .The long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs has been applied in 11 wells in Shengli Oilfield ,and the average valid sand control time is 930 days ,w hich meets sand control requirements of multiple round steam huff and puff wells .