金勇,程诗胜
JIN Yong,CHENG Shisheng

• 1:中国石化江苏油田分公司开发部
• 2:江苏油田分公司勘探开发研究院

摘要(Abstract)：

Q7断块E1f2油藏储层物性差,为典型的特低渗透薄互层油藏,采用长水平段水平井通过大型分段压裂获得产能。由于无法通过注水补充能量,Q7P1井分段压裂投产后,产量呈指数递减,后因严重供液不足而停采,因此有必要研究通过吞吐等方式补充能量恢复产能。在模型建立、相态拟合和历史拟合的基础上,应用油藏数值模拟技术优化不同吞吐方式吞吐参数,结合技术预测指标和经济预测指标对比优选吞吐方式,开展CO_2吞吐矿场试验,取得了较好的增产效果。
The physical properties of Oil Reservoir E1f2 in Block Q7 are rather poorer and moreover these reservoirs are the typical extra-low-permeability interbedded ones,with the help of the long-staged horizontal well fracturing,the productivity of the oil reservoirs can be achieved. Because the energy can not be supplied by the water injection,after staged-fractured and produced for Horizontal Well Q7P1,the production was declined in the exponent way,and more seriously the well was shut in due to the extreme lack of the liquid supply,therefore it was necessary to consider and study Huff-and-Puff measures to supply the energy and recover the productivity. On the basis of the established model,phase and historical fittings,by means of the reservoir numerical simulating technique,the parameters of different Huff-Puff methods were optimized,integrated with the contrasts of the technical and economic predicting indexes,the Huff-Puff ways were optimized,the CO_2Huff-and-Puff field test was conducted and furthermore the much better stimulation effects were achieved.

关键词(KeyWords)： 分段压裂;低产水平井;吞吐方式;数值模拟;现场试验
taged frac/fracturing;stripper/low-production/yield horizontal well;Huff and Puff method;numerical simulation;field test

Abstract:

Keywords:

基金项目(Foundation): 中国石油化工股份公司重点提高采收率先导项目“特低渗透油藏烟道气驱油提高采收率技术研究与应用”

作者(Author): 金勇,程诗胜
JIN Yong,CHENG Shisheng

参考文献(References)：

• [1]张艳玉,吴晓东,李洪君,等.复杂小断块油藏氮气吞吐数值模拟[J].中国石油大学学报,2009,33(1):83-86.
• [2]欧阳传湘,付蓉,涂志勇,等.超稠油三元复合吞吐中表面活性剂筛选及性能评价[J].石油地质与工程,2009,23(6):105-107.
• [3]王海平,刘应学.表面活性剂辅助氮气吞吐工艺技术[J].石油钻采工艺,2001,23(6):72-73.
• [4]向阳,向丹,杜文博,等.表面活性剂在单井注水吞吐采油中的应用研究[J].石油与天然气化工,2003,32(2):102-103.
• [5]陈民锋,姜汉桥,吴应川,等.复杂断块油藏单井CO2吞吐注采参数优化研究[J].油气田地面工程,2008,27(6):1-3.