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胜利油田深层稠油储量大、埋藏深、储层物性差,常规稠油热采开发无法实现有效动用。本次研究以垦627块为例,利用数值模拟技术,探索该类油藏有效动用方式,并进行开发技术界限优化。数值模拟结果表明:该类稠油油藏采用长水平井分段压裂技术,不仅可以改善储层的渗流条件、扩大渗流面积,而且可以直接采用冷采开发,避免了油藏压力大,注蒸汽困难的问题。针对垦627块油藏条件,预测采用水平段长度在500m的情况下,裂缝间距为100m,半缝长为70m的压裂方案实施效果最好,预测开发累积产油量为1.05×104t。对今后类似超稠油低渗透油藏开发方式优化数值模拟具有一定的指导意义。
Shengli Oilfield deep heavy oil reserves, buried deep, poor reservoir properties, conventional heavy oil thermal recovery development can not be effectively used. In this study, Ken 627 was taken as an example to explore the effective use of such reservoirs by using numerical simulation techniques and to optimize the technical limits of development. The numerical simulation results show that this type of heavy oil reservoir can not only improve the seepage conditions of reservoirs but also enlarge the seepage area by using the long horizontal well fracturing technology, Steam problems. According to the condition of Ken-627 reservoirs, the fracturing plan with the interval of 100m and the half-seam length of 70m is predicted to be the best when the horizontal section length is 500m. The predicted cumulative oil production is 1.05 × 104t. It is of guiding significance to optimize numerical simulation of the development of similar ultra-heavy oil and low permeability reservoirs in the future.