石油勘探与开发 >

2020 , Vol. 47 >Issue 1: 140 - 147

DOI: https://doi.org/10.11698/PED.2020.01.13

油气田开发

基于随钻测压流度的地层渗透率评价方法及产能预测

  • 时新磊 ,
  • 崔云江 ,
  • 许万坤 ,
  • 张建升 ,
  • 关叶钦
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  • 中海石油（中国）有限公司天津分公司,天津300459
时新磊（1982-）,男,河南南阳人,硕士,中海石油（中国）有限公司天津分公司渤海石油研究院高级工程师,主要从事测井资料综合解释与储量评价研究。地址：天津市滨海新区海川路2121号,渤海石油管理局B座,邮政编码：300459。E-mail: shixl3@cnooc.com.cn

收稿日期: 2019-03-26

  网络出版日期: 2020-01-17

基金资助

“十三五”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）有限公司科技项目“渤海油田3 000×104 t持续稳产关键技术研究”（CNOOC-KJ135-ZDXM36-TJ）

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Formation permeability evaluation and productivity prediction based on mobility from pressure measurement while drilling

  • SHI Xinlei ,
  • CUI Yunjiang ,
  • XU Wankun ,
  • ZHANG Jiansheng ,
  • GUAN Yeqin
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  • CNOOC China Limited, Tianjin Branch, Tianjin 300459, China

Received date: 2019-03-26

  Online published: 2020-01-17

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摘要

基于随钻测压过程中流度的测量机理,通过大量的测压流度数据分析发现,水基钻井液钻井条件下（水基钻井液滤液）的随钻测压流度与钻井液滤液黏度乘积无限接近于相渗实验过程中残余油饱和度下的水相渗透率,据此提出一种随钻测压流度到岩心渗透率的转换方法,并建立基于Timur公式刻度的渗透率评价模型。该方法在渤海蓬莱19-9油田应用效果表明：①与借用相邻油田模型计算的渗透率相比,该模型计算的渗透率与岩心分析渗透率吻合程度更高;②基于新模型建立了测井计算流度与实钻比采油指数的相关关系,与借用相邻油田渗透率模型建立的关系对比,新模型相关性相对更好;③对4口生产井进行了产能预测,预测结果与钻后实际产量吻合较好。图11表4参20

关键词： 随钻测压流度; 渗透率; 束缚水饱和度; Timur公式; 产能预测; 蓬莱19-9油田

本文引用格式

时新磊 , 崔云江 , 许万坤 , 张建升 , 关叶钦 . 基于随钻测压流度的地层渗透率评价方法及产能预测[J]. 石油勘探与开发, 2020 , 47(1) : 140 -147 . DOI: 10.11698/PED.2020.01.13

Abstract

Based on the measurement mechanism of mobility in pressure measurement while drilling, through analyzing a large number of mobility data, it is found that under the condition of water-based mud drilling, the product of mobility from pressure measurement while drilling and the viscosity of mud filtrate is infinitely close to the water phase permeability under the residual oil in relative permeability experiment. Based on this, a method converting the mobility from pressure measurement while drilling to core permeability is proposed, and the permeability based on Timur formula has been established. Application of this method in Penglai 19-9 oilfield of Bohai Sea shows: (1) Compared with the permeability calculated by the model of adjacent oilfields, the permeability calculated by this model is more consistent with the permeability calculated by core analysis. (2) Based on the new model, the correlation between the calculated mobility of well logging and the actual drilling specific productivity index bas been established. Compared with the relationship established by using the permeability model of an adjacent oilfield, the correlation of the new model is better. (3) Productivity of four directional wells was predicted, and the prediction results are in good agreement with the actual production after drilling.

Key words： mobility from pressure measurement while drilling; permeability; irreducible water saturation; Timur formula; productivity prediction; Penglai 19-9 oilfield

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