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水平开发井在海上油田储量评价和开发生产中的应用

洪浩 戴建文 王华 宋刚 黄余金 刘振 廖意 涂乙

洪浩, 戴建文, 王华, 宋刚, 黄余金, 刘振, 廖意, 涂乙. 水平开发井在海上油田储量评价和开发生产中的应用[J]. 地质科技通报, 2022, 41(3): 173-179. doi: 10.19509/j.cnki.dzkq.2022.0076
引用本文: 洪浩, 戴建文, 王华, 宋刚, 黄余金, 刘振, 廖意, 涂乙. 水平开发井在海上油田储量评价和开发生产中的应用[J]. 地质科技通报, 2022, 41(3): 173-179. doi: 10.19509/j.cnki.dzkq.2022.0076
Hong Hao, Dai Jianwen, Wang Hua, Song Gang, Huang Yujin, Liu Zhen, Liao Yi, Tu Yi. Application of horizontal development wells in reserves evaluation and development of offshore oilfields[J]. Bulletin of Geological Science and Technology, 2022, 41(3): 173-179. doi: 10.19509/j.cnki.dzkq.2022.0076
Citation: Hong Hao, Dai Jianwen, Wang Hua, Song Gang, Huang Yujin, Liu Zhen, Liao Yi, Tu Yi. Application of horizontal development wells in reserves evaluation and development of offshore oilfields[J]. Bulletin of Geological Science and Technology, 2022, 41(3): 173-179. doi: 10.19509/j.cnki.dzkq.2022.0076

水平开发井在海上油田储量评价和开发生产中的应用

doi: 10.19509/j.cnki.dzkq.2022.0076
详细信息
    作者简介:

    洪浩(1987—), 男, 工程师, 主要从事开发地质研究和储量评价工作。E-mail: 510967627@qq.com

  • 中图分类号: TE151

Application of horizontal development wells in reserves evaluation and development of offshore oilfields

  • 摘要:

    海上油田开发初期由于钻井少, 资料录取有限, 且缺少动态资料, 油田储量认识存在较大不确定性, 随着开发程度的提高, 往往会出现储量与产量之间的矛盾, 而储量再评价是解决这种矛盾的重要方式。为提高开发效率, 缩减成本, 海上油田更多以水平井开发, 受井型的影响, 开发阶段资料录取往往受限, 因此新增水平井资料成为油田储量再评价中获得新的地质油藏认识以及提高储量估算精度的关键。为进一步获得可靠的储量评价结果, 解决油田的动静态矛盾, 笔者在分析珠江口盆地储量变化主控参数的基础上, 根据水平井钻井特征, 充分挖掘水平开发井在提高主控参数精度上的作用。分析结果显示含油面积和有效厚度在储量评估中的不确定性最大, 是引起储量变化的两个主控参数, 水平开发井在提升油田产能、确定有效厚度下限、微构造研究、岩性边界以及流体界面识别等方面具有较好的作用, 在资料录取有限的情况下, 利用水平开发井能有效提高主控参数精度, 获得相对合理的地质储量, 解决油田生产动态矛盾的同时, 也为油田后期挖潜指明方向。南海东部多个油田的应用实例也证实这一认识。

     

  • 图 1  南海东部砂岩油田各储量参数影响权重分布示意图

    Figure 1.  Distribution of influence weights of reserve parameters in sandstone oilfields in eastern South China Sea

    图 2  B油田核算前测井解释界限图版(孔隙度和含水饱和度)

    Figure 2.  Limit chart of logging interpretation before accounting in B Oilfield(porosity VS water saturation)

    图 3  B油田11Sa井测井曲线

    Figure 3.  Logging curve of 11Sa well in B Oilfield

    图 4  B油田核算后测井解释界限图版(孔隙度和含水饱和度)

    Figure 4.  Limit chart of logging interpretation after accounting in B Oilfield(porosity VS water saturation)

    图 5  C油田A9H井测井曲线图

    LLS.浅电阻率; LLD.深电阻率; PIGN.孔隙度; 其他同图 3

    Figure 5.  Logging curve of A9H well in C Oilfield

    图 6  C油田A9H井过井轨迹剖面图

    Figure 6.  Profile of well A9H passing through well in C Oilfield

    图 7  H油田L油藏顶面构造与振幅属性叠合图

    Figure 7.  Superimposed map of top structure and amplitude attribute of L reservoir in H Oilfield

    图 8  H油田L油藏生产动态图

    Figure 8.  Production performance diagram of L reservoir in H Oilfield

    图 9  H3井水平段随钻测井曲线及反演地层剖面

    Figure 9.  LWD and inversion of stratigraphic profile for horizontal intervals in Well H3

    图 10  实探/外推油水界面示意图

    ODT.最低油底;OWC.油水界面;r.实际探测深度

    Figure 10.  Diagram of actual exploration/extrapolation oil water contact

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