西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (1): 107-113.DOI: 10.11885/j.issn.1674-5086.2015.07.24.01

• 石油与天然气工程 • 上一篇    下一篇

裂缝-孔洞型碳酸盐岩凝析气井出水特征及预测

康博1,2, 张烈辉1, 王健1, 范坤3, 王宏3   

  1. 1. "油气藏地质及开发工程"国家重点实验室·西南石油大学, 四川 成都 610500;
    2. 成都北方石油勘探开发技术有限公司, 四川 成都 610500;
    3. 中国石油塔里木油田分公司勘探开发研究院, 新疆 库尔勒 841000
  • 收稿日期:2015-07-24 出版日期:2017-02-01 发布日期:2017-02-01
  • 通讯作者: 康博,E-mail:49872897@qq.com
  • 作者简介:康博,1986年生,男,汉族,四川南江人,工程师,博士,主要从事油气田开发方面的研究。E-mail:49872897@qq.com;张烈辉,1967年生,男,汉族,四川仁寿人,教授,博士生导师,主要从事油气渗流理论、油气藏工程及数值模拟等领域的教学和科研工作。E-mail:zhangliehui@vip.163.com;王健,1966年生,男,汉族,江苏如皋人,教授,博士,主要从事提高采收率方面的研究工作。E-mail:wjeor@126.com;范坤,1984年生,男,汉族,新疆库尔勒人,工程师,硕士,主要从事注气提高采收率方面的研究工作。E-mail:fankuntlm@petrochina.com.cn;王宏,1983年生,男,汉族,甘肃靖远人,工程师,硕士,主要从事油气藏开发研究管理工作。E-mail:wangh4-tlm@petrochina.com.cn
  • 基金资助:
    国家自然科学基金(51374181);国家科技重大专项(2008ZX050054)。

Features and Forecast of Water Output in Fractured Vuggy Carbonate Condensate Reservoir

KANG Bo1,2, ZHANG Liehui1, WANG Jian1, FAN Kun3, WANG Hong3   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. Chengdu Northern Petroleum Exploration and Development Technology Co. Ltd., Chengdu, Sichuan 610500, China;
    3. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China
  • Received:2015-07-24 Online:2017-02-01 Published:2017-02-01

摘要: 随着开采时间的增加,塔中I号坡折带上奥陶统裂缝孔洞型碳酸盐岩凝析气藏产水井数目和产水量都有所增加,从而降低了凝析气井产量,影响凝析气藏开发的整体效果。在总结塔中地区裂缝孔洞型碳酸盐岩凝析气井生产特征的基础上,利用流动物质平衡法对试采井进行能量评价,对有较强地层能量补充的试采井,利用生产气油比和天然气烃类组分的变化规律进行出水预测研究。研究结果表明,碳酸盐岩凝析气井自喷生产期间,随着地层压力下降,气油比缓慢上升,随着地层能量的补充,气油比在一段时间内会相对稳定(约4 000 m3/t),出水前生产气油比缓慢下降至2 000 m3/t,产水后气油比快速上升;同时,在产水前天然气烃类组分发生变化,轻质组分C1+N2含量降低约3%~6%,重质组分C7+含量较稳定生产时增加19倍以上。

关键词: 裂缝-孔洞型, 碳酸盐岩, 凝析气藏, 气油比, 烃类组分, 出水预测

Abstract: With increase in production, the number and water production rate of gas wells producing water in the carbonate gascondensate reservoir increases, which reduces the recovery ratio of condensate and natural oils, and impacts the overall effect of condensate gas reservoir development. This article, based on summarizing the features of the carbonate gas-condensate wells in terms of production and water production, makes an energy evaluation of the producing test wells through the flow material balance method, and studies forecast of the water output from producing test wells, with abundant supply of formation energy, according to the changing pattern of production gas-oil ratio and natural gas hydrocarbons. The results of the evaluation prove that the production gas-oil ratio reduces significantly before water output of the carbonatite gas-condensate well; the percentage of light natural gas hydrocarbon components reduces, while that of intermediate and heavy components increases.

Key words: fractured vuggy formation, carbonate, condensate reservoir, gas-oil ratio, hydrocarbons, forecast of water output

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