火山岩对砂岩储层物性影响的定量表征及应用

马奎前; 李超; 原建伟; 杨明; 张博

doi:10.3969/j.issn.1006-6535.2023.05.012

特种油气藏 >

2023 , Vol. 30 >Issue 5: 91 - 97

DOI: https://doi.org/10.3969/j.issn.1006-6535.2023.05.012

油藏工程

火山岩对砂岩储层物性影响的定量表征及应用

马奎前 ,
李超 ,
原建伟 ,
杨明 ,
张博

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中海石油(中国)有限公司天津分公司,天津 300459

马奎前(1971—),男,教授级高级工程师,1997年毕业于石油大学(华东)石油工程专业,现从事海上油气田开发与生产研究方面的工作。

收稿日期: 2022-09-14

修回日期: 2023-07-02

网络出版日期: 2023-12-25

基金资助

国家科技重大专项“渤海油田加密调整及提高采收率油藏工程技术示范”(2016ZX05058-001);中海石油(中国)有限公司科技攻关项目“渤海双高油田挖潜关键技术研究”(YXKY-2018-TJ-04);中海石油(中国)有限公司重点项目“渤海中深层复杂油气藏高效开发技术”(CNOOC-KJ135 ZDXM36 TJ03TJ)

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Quantitative Characterization of the Influence of Volcanic Rocks on the Physical Properties of Sandstone Reservoirs and Its Application

Ma Kuiqian ,
Li Chao ,
Yuan Jianwei ,
Yang Ming ,
Zhang Bo

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CNOOC (China) Tianjin Company, Tianjin 300459, China

Received date: 2022-09-14

Revised date: 2023-07-02

Online published: 2023-12-25

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摘要

针对火山岩对砂岩储层物性影响范围定量表征难的问题,利用渤海X油田动、静态资料,总结了3种典型火山岩与砂岩储层的接触关系。运用试井理论方法,建立了多层合采复合油藏模型,以“均质+复合储层”模型为例,分析了均质层边界半径、复合层内外区流度比、复合层内外区储容比、复合层内区半径对压力动态曲线的影响,并应用该模型对渤海X油田A1井进行试井解释。研究结果表明:压力动态曲线根据压力导数曲线形态可以分为5个阶段,分别为井筒储存阶段、早期过渡流阶段、复合层内区向外区过渡流阶段、复合层外区与均质层混合流动阶段、多层边界响应阶段;A1井试井拟合精度较高,进一步验证了模型的可靠性;距离火山岩大约300.0 m范围内砂岩储层物性变差,结合静态资料刻画的火山岩范围,指导了渤海X油田2口调整井井网部署,投产后比采油指数为A1井的4.0~6.0倍,效果显著。研究成果对火山岩发育区砂岩油田的试井解释、井网部署及高效开发具有一定的借鉴意义。

关键词： 火山岩; 多层合采; 复合油藏; 接触关系; 试井解释; 渤海油田

本文引用格式

马奎前 , 李超 , 原建伟 , 杨明 , 张博 . 火山岩对砂岩储层物性影响的定量表征及应用[J]. 特种油气藏, 2023 , 30(5) : 91 -97 . DOI: 10.3969/j.issn.1006-6535.2023.05.012

Abstract

To address the problem that it is difficult to quantitatively characterize the influence range of volcanic rocks on the physical properties of sandstone reservoirs, the three typical contact relationships between volcanic rocks and sandstone reservoirs were summarized using dynamic and static data from the Bohai X Oilfield. A multi-layered commingled production composite reservoir model was established using the theoretical method of well testing, the "homogeneous + composite reservoir" model was used as an example to analyze the influence of the boundary radius of homogeneous layer, the mobility ratio of inner and outer zone of composite layer, the storage capacity ratio of inner and outer zone of composite layer, and the radius of inner zone of composite layer on the pressure dynamic curve, and the model was applied to the well testing interpretation of Well A1 in Bohai X Oilfield. The study results show that the pressure dynamic curve can be divided into five stages according to the pressure derivative curve morphology, which are wellbore storage stage, early transition flow stage, transition flow stage from the inner zone to the outer zone of the composite layer, mixed flow stage between the outer zone of the composite layer and the homogeneous layer, and multi-layer boundary response stage. The high fitting accuracy of Well A1 test well further verified the reliability of the model. The physical properties of the sandstone reservoir deteriorated within about 300.0 m from the volcanic rocks. Combined with the range of volcanic rocks portrayed by the static data, the network deployment of the 2 adjustment wells in the Bohai X Oilfield was guided, and the specific productivity index after production was 4.0 to 6.0 times of that of Well A1, with remarkable effect. The research results have some implications for well testing interpretation, well network deployment and efficient development of sandstone oilfields in volcanic rock development area.

Key words： volcanic rocks; multi-layer commingled production; composite reservoir; contact relationship; well testing interpretation; Bohai Oilfield

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