姬塬油田A长8油藏纳米小分子水驱试注效果分析
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长庆油田油气工艺研究院

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中国石油天然气股份有限公司重大科技专项《长庆油田5000万吨持续高效稳产关键技术研究与应用》(2016E-0510)


Experimental injection effect analysis of "small molecule water" in A reservoir of jiyuan oilfield
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    摘要:

    针对超低渗透姬塬A长8油藏,由于受储层物性等因素影响,注水困难、水驱效率较低的问题,在室内选用纳米驱油剂iNanoW1.0进行17O核磁共振及低场核磁共振等评价分析,看到了纳米驱油剂iNanoW1.0具有提高普通水进入超低渗透注水困难区域的能力,通过17O核磁共振确定了纳米驱油剂iNanoW1.0注入浓度,首次开展了现场纳米“小分子水”驱油剂试注试验,在不改变注水作业制度情况下,试验1年半多以来,注入性良好,对应井组见效比例较高,均呈现增油控水的效果,试注取得初步成功。

    Abstract:

    A chang8 block of ultra-low permeability reservoirs, due to the effect of factors such as reservoir physical property, water injection difficulty and the problem of low efficiency of water flooding, choose in indoor nano oil displacement agent iNanoW1.0 NMR spectrum test nuclear magnetic resonance (NMR) and low field nuclear magnetic resonance (NMR) detection based on the analysis of the evaluation, see the nano oil displacement agent iNanoW1.0 has improve the ability of ordinary water into ultra-low permeability water injection difficulty area, Nano oil displacement agent was determined by the nuclear magnetic resonance (NMR) iNanoW1.0 injection concentration, for the first time to carry out the scene test note "small molecules of water oil displacement agent, without changing the water injection operation system, test more than 1 year and a half ,injection performance is good, the corresponding symmetry of response ratio is higher, both present solution increased, the effect of oil test achieved initial success.

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  • 收稿日期:2020-12-17
  • 最后修改日期:2021-03-04
  • 录用日期:2021-05-12
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