|本期目录/Table of Contents|

[1]蔡 晖 刘 东 程大勇 孙召勃 张国浩.厚层砂岩油藏水驱均衡驱替研究及应用[J].中国海上油气,2019,31(06):92-98.[doi:10.11935/j.issn.1673-1506.2019.06.011]
 CAI Hui LIU Dong CHENG Dayong SUN Zhaobo ZHANG Guohao.Research and application of water flooding equilibrium displacement in thick sandstone reservoirs[J].China Offshore Oil and Gas,2019,31(06):92-98.[doi:10.11935/j.issn.1673-1506.2019.06.011]
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厚层砂岩油藏水驱均衡驱替研究及应用()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第31卷
期数:
2019年06期
页码:
92-98
栏目:
渤海海域油气勘探开发成果专辑
出版日期:
2019-11-21

文章信息/Info

Title:
Research and application of water flooding equilibrium displacement in thick sandstone reservoirs
文章编号:
1673-1506(2019)06-0092-07
作者:
蔡 晖 刘 东 程大勇 孙召勃 张国浩
(中海石油(中国)有限公司天津分公司 天津 300459)
Author(s):
CAI Hui LIU Dong CHENG Dayong SUN Zhaobo ZHANG Guohao
(CNOOC China Limited, Tianjin Branch, Tianjin 300459, China)
关键词:
厚层砂岩油藏 注水开发 重力分异 均衡驱替准数 剩余油 水平井 SZ油田
Keywords:
thick sandstone reservoir water injection development gravity differentiation equilibrium displacement number remaining oil horizontal well SZ oilfield
分类号:
TE341
DOI:
10.11935/j.issn.1673-1506.2019.06.011
文献标志码:
A
摘要:
针对厚层砂岩油藏水驱重力分异作用导致纵向波及系数较低的问题,基于渤海主力水驱油田的取心资料,根据相似原理制作了均质、正韵律、反韵律的二维平板可视化长模型(50 cm)、短模型(28 cm),进行了水驱油物理模拟实验; 基于实验结果,提出了水驱均衡驱替准数,即在注采压差、重力分异共同作用下垂向与水平流动时间的比值,其值越大,纵向波及越均匀,水驱效果越好。对影响均衡驱替准数的主要参数进行了敏感性分析,敏感性从大到小依次为注采井距、垂向渗透率与水平渗透率比值、注采压差、油层厚度、油水密度差。计算结果表明,渤海主力注水油田各区块目前驱替准数大多小于合理均衡驱替准数,具有进一步调整的潜力; 矿场应用表明,SZ油田在油、水井排间加密部署水平井,同时通过提液增加生产压差,取得了较好的挖潜效果。本文研究可为类似油田的剩余油挖潜提供借鉴。
Abstract:
To address the problem of low longitudinal sweeping coefficient caused by water-flooding gravity differentiation of thick sandstone reservoirs, two-dimensional flat long and short visual models(50 cm and 28 cm, respectively)of homogeneity, positive rhythm and reverse rhythm were established based on the core data of a main water flooding oilfield in the Bohai sea and according to the similarity principle to carry out the physical simulation experiment of water flooding. Based on the experimental results, the water flooding equilibrium displacement number was proposed. The number is the ratio of vertical/horizontal flow times under the joint effort of injection-production pressure differential and gravity differentiation. The larger the value, the more uniform the longitudinal sweeping, and the better the water flooding effect. Sensitivity analysis was carried out to study the main parameters affecting the equilibrium displacement number, and the parameters are the injection-production well spacing, the ratio of vertical permeability to horizontal permeability, injection-production pressure differential, oil layer thickness, and oil-water density difference in the order from high to low sensibility. The calculation results suggest that currently, the equilibrium displacement numbers of most of blocks in the main water flooding oilfields in the Bohai sea are smaller than the reasonable dimensionless number, with room for further adjustment. The field application shows that the SZ oilfield has got pretty far in tapping its potential by deploying infilling horizontal wells between the oil well and water well arrays and increasing the production pressure differential through liquid extraction. This study can provide references for the remaining oil potential tapping of similar oilfields.

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备注/Memo

备注/Memo:
*中海石油(中国)有限公司综合科研项目“渤海‘双高'油田挖潜关键技术研究(编号:YXKY-2018-TJ-04)”部分研究成果。 第一作者简介: 蔡晖,女,高级工程师,2002年毕业于中国石油大学(北京)油气田开发工程专业,获硕士学位,现主要从事油气田开发研究工作。地址:天津市滨海新区海川路2121号渤海石油管理局大厦B座(邮编:300459)。E-mail:caihui2@cnooc.com.cn。
更新日期/Last Update: 1900-01-01