摘要
方法利用水平井热采模式．对特、超稠油油藏进行开采。目的改善开发效果，提高经济效益。结果对油层厚度小于5m的特、超稠油油藏不宜采用水平井热采；对油层厚度在5～10m的特稠油油藏或油层厚度大于10m的超稠油油藏，可采用水平井蒸汽吞吐和蒸汽驱开采；对原油粘度大于5×104mPa·s的超稠油油藏，适用蒸汽吞吐开采；对油层厚度大于20m，原油粘度大于20×104mPa·s的超稠油油藏，必须采用蒸汽辅助重力泄油技术。结论对已投入蒸汽吞吐的特稠油油藏，尤其是处于中后期吞吐阶段的区块，应采用蒸汽加氮气泡沫驱及现有在井与水平共组合蒸汽驱模式；对尚未开发的特、超稠油油藏，应采用水平井注蒸汽热采模式及其它新技术。
Method To recover super-extra viscous crude oil reservoir with thermal developmentmode in horizontal well. Purpose To improve development result and increase economicbenefit. Result Thermal development in horizontal well is suitable for extra-super viscouscrude oil reservoir that the thickness of oil zone is less than 5 m; Horizontal steam huff andpuff as well as steam drive could be adopted in super viscous crude oil reservoir that thethickness of oil zone is 5-10 m and in extra viscous crude oil reservoir that the thickness ofoil zone is over 10 m; Steam huff and puff is suitable for super viscous crude oil reservoirthat the oil viscosity is over 5×104 mPa· s; Steam-assisted gravity drainage technology mustbe used in super viscous crude oil reservoir that the oil zone thickness is over 20 m and the oilviscosity is over 20×104 mPa· s. Conclusion For the super viscous crude oil reservoir under steam huff and puff development, especially the blocks in middle-later period of huff andpuff, foam drive with steam and nitrogen method should be used, a combination of verticalwell and horizontal well steam drive may also be used; For super-extra viscous crude oilreservoir without development practice, the suitable method is thermal development modewith steam injection in horizontal well as well as other new techniques.
出处
《特种油气藏》
CAS
CSCD
1998年第3期1-7,11,共8页
Special Oil & Gas Reservoirs
关键词
特稠油
超稠油
二次热采
开发模式
注蒸汽
油藏
extra viscous crude oil, super viscous crude oil, secondary thermal recovery, development mode, thermal recovery in horizontal well, overview
