复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2013年
2期
53-56
,共4页
表面活性剂%低透渗油藏%注水%降压%增注
錶麵活性劑%低透滲油藏%註水%降壓%增註
표면활성제%저투삼유장%주수%강압%증주
surfactant%low -permeability reservoir%water flooding%decreasing water injection pressure%increasing in-jection volume
针对江苏低渗透油田开发面临水井注水难、注水压力高的问题，开展了注表活剂降压增注研究。研制了超低界面张力表活剂体系（0.5％RD -06＋1.0％助剂 A），能与江苏原油形成10-3 mN /m 数量级超低界面张力，并具有抗稀释抗盐能力强、稳定性好的特点。岩心降压模拟实验表明，表活剂复配体系可使注入压力平均下降38.3％；岩心含油饱和度越高，驱替压力下降幅度越大，该配方适应注水井近井地带含油饱和度大于40％的注水井降压增注。
針對江囌低滲透油田開髮麵臨水井註水難、註水壓力高的問題，開展瞭註錶活劑降壓增註研究。研製瞭超低界麵張力錶活劑體繫（0.5％RD -06＋1.0％助劑 A），能與江囌原油形成10-3 mN /m 數量級超低界麵張力，併具有抗稀釋抗鹽能力彊、穩定性好的特點。巖心降壓模擬實驗錶明，錶活劑複配體繫可使註入壓力平均下降38.3％；巖心含油飽和度越高，驅替壓力下降幅度越大，該配方適應註水井近井地帶含油飽和度大于40％的註水井降壓增註。
침대강소저삼투유전개발면림수정주수난、주수압력고적문제，개전료주표활제강압증주연구。연제료초저계면장력표활제체계（0.5％RD -06＋1.0％조제 A），능여강소원유형성10-3 mN /m 수량급초저계면장력，병구유항희석항염능력강、은정성호적특점。암심강압모의실험표명，표활제복배체계가사주입압력평균하강38.3％；암심함유포화도월고，구체압력하강폭도월대，해배방괄응주수정근정지대함유포화도대우40％적주수정강압증주。
The injection pressure of some water flooding wells are very high in low -permeable reservoirs of Jiangsu oilfield.A surfactant system (0.5% surfactant RD -06 +1.0% accessory ingredient A),which has ultralow interfacial tension (as low as 10 -3 mN /m order of magnitudes)with crude oil taken from Jiangsu Oilfield,was developed to decrease injection pressure and improve injection volume.The combined system has good resistance to dilution,strong anti -salt and high thermal stability.Decreasing pressure experimental results show that water injection pressure can be decreased by 38. 3%.The bigger the oil saturation of core is,the higher decrease of injection pressure is.For targeted wells,more than 40%oil saturation is expected.
