| 歧口凹陷埕海高斜坡低饱和度油藏形成机制与开发实践——以刘官庄油田馆陶组三段为例 |
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| 引用本文： | 周立宏,韩国猛,董晓伟,陈长伟,纪建峥,马建英,周连敏,饶敏,张睿.歧口凹陷埕海高斜坡低饱和度油藏形成机制与开发实践——以刘官庄油田馆陶组三段为例[J].中国石油勘探,2021(1):74-85. |
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| 作者姓名： | 周立宏 韩国猛 董晓伟 陈长伟 纪建峥 马建英 周连敏 饶敏 张睿 |
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| 作者单位： | 中国石油大港油田公司 |
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| 基金项目： | 中国石油天然气股份有限公司重大科技专项“大港油区效益稳产关键技术研究与应用”(2018E-11)。 |
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| 摘 要： | 位于歧口凹陷南缘埕海高斜坡的刘官庄油田,低饱和度油藏分布规律认识不清,具有原油密度高、黏度大及含油饱和度低的特点,热采和化学降黏效果不理想,难以开发动用.通过详细分析低饱和度油藏的形成机制,明确油气远源运移、储层非均质性强、构造幅度宽缓是刘官庄油田馆陶组三段低饱和度油藏形成的主要因素;并结合刘官庄油田低饱和度油藏富集特...
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| 关 键 词： | 歧口凹陷 埕海高斜坡 刘官庄油田 低饱和度 开发实践 |
Formation mechanism and development practice of low saturation oil reservoir in Chenghai high slope in the Qikou sag:a case study of Ng3 oil reservoir in Liuguanzhuang Oilfield |
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| Zhou Lihong,Han Guomeng,Dong Xiaowei,Chen Changwei,Ji Jianzheng,Ma Jianying,Zhou Lianmin,Rao Min,Zhang Rui.Formation mechanism and development practice of low saturation oil reservoir in Chenghai high slope in the Qikou sag:a case study of Ng3 oil reservoir in Liuguanzhuang Oilfield[J].China Petroleum Exploration,2021(1):74-85. |
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| Authors: | Zhou Lihong Han Guomeng Dong Xiaowei Chen Changwei Ji Jianzheng Ma Jianying Zhou Lianmin Rao Min Zhang Rui |
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| Affiliation: | (PetroChina Dagang Oilfield Company) |
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| Abstract: | Liuguanzhuang Oilfield,located in the Chenghai high slope area in the southern margin of Qikou sag,is characterized by high density,high viscosity and low saturation of crude oil.The distribution law of low saturation oil reservoir is not clear.This type of oil reservoir is difficult to recover and utilize due to the effect of measures such as thermal recovery and chemical viscosity reduction is unsatisfactory.Taking Liuguanzhuang Oilfield as an example,this paper analyzes the formation mechanism of the low saturation oil reservoir in detail.The main controlling factors of the low saturation oil reservoir in Ng3member include:long distance migration of hydrocarbon away from the source,strong heterogeneous of the reservoir,and wide and gentle structures.Combining with the enrichment characteristics of low saturation oil reservoir in the Liuguanzhuang Oilfield,it is pointed out that the configuration of Guantao formation unconformity developed in the high slope in the Chenghai area and above basal conglomerate is not only the main channel for hydrocarbon transport,but also the carrier layer of low saturation oil-bearing“box”.The oil and gas accumulation mode in the Liuguanzhuang area is dominated by low saturation oil reservoir,supplemented by conventional structural and lithologic oil and gas reservoir,and“stereoscopic oil-bearing and integrated as a whole”in the trench.Development practice of“horizontal well+CO2 huff and puff”was implemented in 10 horizontal wells totally,with the average production of a single well rising from about 2 t to 50 t at maximum,and the recovery factor improving by 7.9%,which greatly enhanced the development effect of low saturation oil reservoir in Liuguanzhuang Oilfield. |
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| Keywords: | Qikou sag Chenghai high slope Liuguanzhuang Oilfield low saturation development practice |
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