超低渗透水平裂缝油藏水平井井眼轨迹优化技术
发布时间：2019-05-11 22:04
【摘要】：七里村油田长_6 油藏为浅层超低渗透油藏,压裂后人工裂缝为水平缝,直井开采效果不理想。为改善开发效果,水平井的水平段设计为纵向穿越不同的流动单元,压裂后形成多条水平裂缝。基于此思路,设计了"一"字型、大斜度型和"弓"型3种形状的井眼轨迹。数值模拟计算了3种井眼轨迹的开发指标,"弓"型井眼轨迹生产效果最佳。在七平1井上开展现场试验,长_(6_(2~2))油层实施6段压裂,分别在3个流动单元各造2组水平裂缝,水平井投产后开发效果明显改善,初期日产油、累计产油均达到同区直井的13.0倍以上。试验表明,采用"弓"型井眼轨迹可有效提高水平裂缝油藏储量动用程度,对国内同类油藏的开发具有借鉴意义。
[Abstract]:Chang6 reservoir in Qilicun Oilfield is a shallow ultra-low permeability reservoir, and the artificial fracture is horizontal fracture after fracturing, and the production effect of straight well is not ideal. In order to improve the development effect, the horizontal section of horizontal well is designed to pass through different flow units longitudinally, and multiple horizontal fractures are formed after fracturing. Based on this idea, the wellbore trajectories of "one" font, high slope type and "bow" type are designed. The development indexes of three kinds of wellbore trajectories are calculated by numerical simulation, and the production effect of "bow" wellbore trajectory is the best. The field test was carried out in well Qiping 1. Six members of the long _ (62o2) reservoir were fracturing, and two groups of horizontal fractures were created in each of the three flow units. The development effect of the horizontal well was obviously improved after the horizontal well was put into operation, and the daily oil production at the initial stage was obviously improved. The cumulative oil production is more than 13.0 times of that of vertical wells in the same area. The test results show that the use of "bow" wellbore trajectory can effectively improve the reserve production degree of horizontal fracture reservoir, which can be used for reference for the development of similar reservoirs in China.
【作者单位】： 陕西延长石油(集团)有限责任公司研究院;延长油田股份有限公司;
【基金】：陕西省科技统筹创新工程计划项目“提高延长油田主力油层开发效果系统工程关键技术研究”(2012KTZB01-04)
【分类号】：TE243
[Abstract]:Chang6 reservoir in Qilicun Oilfield is a shallow ultra-low permeability reservoir, and the artificial fracture is horizontal fracture after fracturing, and the production effect of straight well is not ideal. In order to improve the development effect, the horizontal section of horizontal well is designed to pass through different flow units longitudinally, and multiple horizontal fractures are formed after fracturing. Based on this idea, the wellbore trajectories of "one" font, high slope type and "bow" type are designed. The development indexes of three kinds of wellbore trajectories are calculated by numerical simulation, and the production effect of "bow" wellbore trajectory is the best. The field test was carried out in well Qiping 1. Six members of the long _ (62o2) reservoir were fracturing, and two groups of horizontal fractures were created in each of the three flow units. The development effect of the horizontal well was obviously improved after the horizontal well was put into operation, and the daily oil production at the initial stage was obviously improved. The cumulative oil production is more than 13.0 times of that of vertical wells in the same area. The test results show that the use of "bow" wellbore trajectory can effectively improve the reserve production degree of horizontal fracture reservoir, which can be used for reference for the development of similar reservoirs in China.
【作者单位】： 陕西延长石油(集团)有限责任公司研究院;延长油田股份有限公司;
【基金】：陕西省科技统筹创新工程计划项目“提高延长油田主力油层开发效果系统工程关键技术研究”(2012KTZB01-04)
【分类号】：TE243
【参考文献】
相关期刊论文 前10条
1 琚岩;范坤宇;赵崴;谢恩;徐秋云;张文;;基于地应力特征的水平井井眼轨迹与分段压裂优化技术——以塔里木盆地塔中地区碳酸盐岩储集层为例[J];新疆石油地质;2016年05期
2 李伶东;梁栋斌;王文雄;张金;张岁盟;;分段多簇压裂技术在低渗透油田的应用研究[J];内蒙古石油化工;2016年09期
3 任颖;孙卫;张茜;任大忠;吴彦君;刘登科;魏晓娥;马晓玲;;低渗透储层不同流动单元可动流体赋存特征及生产动态分析——以鄂尔多斯盆地姬塬地区长6段储层为例[J];地质与勘探;2016年05期
4 孟选刚;杜志敏;王香增;白艳改;邵长金;;压裂水平缝渗流特征及影响因素[J];大庆石油地质与开发;2016年03期
5 严向阳;赵海燕;王腾飞;徐永辉;张亚杰;齐明;;非常规储层水平井分段压裂新技术及适用性分析[J];油气藏评价与开发;2016年02期
6 孟选刚;杜志敏;王香增;郝世彦;白艳改;;延长长6浅油层水平缝水平井压裂参数设计[J];石油钻采工艺;2016年01期
7 刘茂森;付建红;白t，
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