超稠油驱泄复合立体开发关键参数研究与探讨

SAGD 开采技术是超稠油油藏吞吐后大幅度提高采收率技术之一，目前已经在辽河油田成功应用，但实施过程中受连续油层厚度及隔夹层的影响，蒸汽腔难以扩展至夹层上部，造成油层动用程度低、油汽比低，制约了SAGD 开采规模进一步扩大。针对此项关键问题，应用物理模拟及数值模拟方法，提出了超稠油驱泄复合立体开发技术，揭示了驱泄复合水平驱动与重力泄油的开采机理、探讨了隔夹层岩性及分布、夹层对SAGD 的影响及封隔能力、驱泄复合实施技术界限，并提出了立体开发井网形式，为驱泄复合开采技术的发展完善提供了技术借鉴。

Research and Discuss on Key Parameters of Steam Flooding and Gravity Drainage Tridimensional Development in Super Heavy Oil Reservoir

SAGD is one of the oil recovery improvement methods after cyclic steam stimulation in super heavy oil reservoir. It has been applied successfully in Liaohe Oilfield already. But the steam chamber could not extended to upper part of reservoir due to the reservoir thickness and the non-developed inter-bed，which led to low using degree and OSR，and restricted the further application of SAGD. Aiming at solving the key problem，this paper innovates a new technology named steam flooding and gravity drainage tridimensional development in super heavy oil reservoir on the basis of both physical simulation and numerical simulation study. Its mechanism is steam flooding in flat and gravity drainage vertically. The inter-bed distribution，influence and the sealing ability are also studied. This paper discusses the technical limitation of steam flooding and gravity drainage technology，and proposes tridimensional well pattern All above provide a powerful technology reference for the development of steam flooding and gravity drainage.