油气藏评价与开发 ›› 2019, Vol. 9 ›› Issue (1): 64-67.

• 石油工程 • 上一篇    下一篇

多元热流体多轮次吞吐周期注入强度优化方法

冯祥,宫汝祥,李敬松   

  1. 中海油田服务股份有限公司油田生产研究院,天津 300459
  • 收稿日期:2018-05-14 出版日期:2019-02-26 发布日期:2019-02-15
  • 作者简介:冯祥(1985—),男,工程师,油气田开发及提高采收率。
  • 基金资助:
    国家科技重大专项“海上稠油多元热流体热采机理及配套工艺技术研究”(2011ZX05024-005-001)

Optimization method for injection intensity of multi thermal fluid huff and puff in multiple cycles

Feng Xiang,Gong Ruxiang,Li Jinsong   

  1. Research Institute of Oilfield Production, COSL, Tianjin 300459, China
  • Received:2018-05-14 Online:2019-02-26 Published:2019-02-15

摘要:

多元热流体吞吐热采作为一种海上稠油热采开发技术,已在渤海稠油油田开发中进行了多轮次吞吐试验。通过理论分析和数值模拟方法,合理表征了多元热流体吞吐技术机理,引入变异系数概念,得出影响多轮次吞吐效果的主要因素为注入强度、转周时机、注入温度、周期递增率。基于典型油田的油藏特征,以周期产出投入比为评价指标,形成不同累产油和存气率条件的计算样本,回归得到多元热流体吞吐井多周期最佳注入强度,用影响热采效果的主要因素对优化进行校正,绘制成优化图版,准确高效地得到合理注入参数,提高多轮次吞吐热采效果。

关键词: 多元热流体, 多轮次吞吐, 影响因素, 参数优化, 开采效果

Abstract:

As one of the offshore heavy oil thermal exploitation technology, the multi thermal fluid stimulation technology had been carried out in the development of heavy oil in Bohai oilfield. By the theoretical analysis and numerical simulation method, we reasonably characterized the mechanism of multi thermal fluid huff and puff, introduced the concept of coefficient of variation, and obtained the main factors affecting the effect of multiple rounds of throughput, which were the injection strength, shift opportunity, injection temperature, and periodic increasing rate. Based on the reservoir characteristics of the typical oil field, and with the evaluation index of the rate of cycle output and input, we got the sample data of different cumulative oil production and gas retention conditions, and regressed the optimum injection strength in multiple cycles of multi thermal fluid huff and puff wells. Then we corrected the optimization by using the main factors influencing the thermal recovery effect, drew the optimized version to obtain the reasonable injection parameters accurately and efficiently, and improved the thermal recovery effect of huff and puff in multiple rounds.

Key words: multi thermal fluid, huff and puff in multiple rounds, influencing factor, parameter optimization, development effect

中图分类号: 

  • TE357