作　　者： (郑浩）; (王月杰）;

机构地区： 中海石油中国有限公司天津分公司渤海石油研究院,天津300452

出　　处： 《油气藏评价与开发》 2017年第4期16-21,共6页

摘　　要： "十一五"以来,中国海油随着勘探技术的提高及勘探力度的加大,在我国渤海油田太古宇变质岩基底潜山中发现了一系列油藏,其中以锦州25-1南潜山裂缝性油藏为典型代表。针对潜山储层储集空间类型复杂、非均质性强、开发难度大等地质特征及开采特点,对锦州25-1南潜山裂缝性油藏的开发方式、层系划分、井网部署、采油速度以及采收率等开发策略进行了研究,并制定了合理的开发方案。方案设计一套开发层系,采用水平井顶底平行交错的立体注采井网开发,井距600~700 m、初期采油速度3%、预测最终采收率25%。为降低开发风险,方案实施过程中采取了"井间逐次加密、井网多次成型"的整体部署、分批实施策略,取得了很好的效果,实现了海上潜山裂缝性油藏的高效开发。 Since the 11th Five-Year Plan, CNOOC has found a series of reservoir at the bottom of Archaeozoie buried hill in Bohai oilfield with the improvement of exploration technology, among them, JZ25-IS fractured buried hill reservoir is a typical one. According to the geologic and exploitation characteristics of complex reservoir space type, strong heterogeneity and difficult exploita- tion, this paper researches development method, layer system division, well pattern design, oil recovery rate and recovery, and makes a reasonable development plan. This plan designs a series of development strata, and adopts stereoscopic injection and production well pattern which top and bottom in parallel, in addition, well spacing is within 600 and 700 meters, the initial oil production rate is 3 %, and the recovery efficiency is 25 %. In order to reduce the development risk, this plan adopts integral deployment and step-by-step implementation strategies of interwell successive infilling and well pattern successive completing, which achieves good effects. Accordingly, high efficient development strategy of fractured buried hill reservoir is realized in Bohai Oilfield.

关 键 词： 潜山 裂缝性油藏 地质特征 开采特征 开发策略