王怒涛,陈仲良,祝明谦,朱海慧
WANG Nutao,CHEN Zhongliang,ZHU Mingqian,ZHU Haihui

• 1:西南石油大学石油与天然气工程学院
• 2:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

页岩气井产量递减规律的分析方法,目前主要有SEPD模型、Duong模型和YM-SEPD模型等单一模型以及它们的组合模型。鉴于页岩气藏压裂水平井复杂的流动机理和渗流规律,单一递减模型难以适应现场需要,提出了组合递减模型,但如何组合及组合点有待详述。针对上述情况,提出2种组合点计算方法:递减率相等点组合和产量相等点组合。通过生产数据拟合精度筛选,得出如下结论:Duong+Arps优化组合模型,以递减率为组合点,明显发生跳跃现象,而Duong+Arps以产量为组合点,预测模型跳跃现象明显减弱,并且拟合精度较高,预测结果也比较准确;组合模型与基础模型相比,组合模型吻合度较高;以产量相等点为组合点可以推广到其他模型。
At present,the analyzing methods of the production decline laws for shale gas wells are mainly SEPD model,Duong model,YM-SEPD model and their combined models. In the light of the complex flow mechanism and the seepage laws of the fractured horizontal well in the shale gas reservoirs,the individual decline models stated above are difficult to meet the field requirements,although the combined decline models have been presented,how to combine and the points to combine have not been discussed in detail. In view of the above conditions,two kinds of the calculating methods for the combining points were proposed: equal point combinations of the decline rate and the production. By means of the choosing of the matching precision for the production data,the conclusions show as follows: for optimized combined Model Duong + Arps,taking the decline rate as the combining point,the jump phenomenon is obvious,while Model Duong + Arps takes the production as the combining point,the jump phenomenon of the predicting model is rather weak,and moreover the matched precision is pretty higher,the predicted results are more accurate; comparing between the combined models and the basic models,the accordance degree of the combined ones are pretty higher; the combined ones taking the production as the point can be generalize to theother models.

关键词(KeyWords)： 页岩气;压裂水平井;产量递减;Arps模型;SEPD模型;Duong模型;组合模型
shale gas;fractured horizontal well;production decline;Arps model;SEPD model;Duong model;combined model

Abstract:

Keywords:

基金项目(Foundation): “十三五”国家科技重大专项“致密砂岩气藏渗流特征及开发技术政策研究”(2016ZX05048-004-005)

作者(Author): 王怒涛,陈仲良,祝明谦,朱海慧
WANG Nutao,CHEN Zhongliang,ZHU Mingqian,ZHU Haihui

DOI: 10.19597/J.ISSN.1000-3754.201707046

参考文献(References)：

• [1]江怀友,宋新民,安晓璇,等.世界页岩气资源勘探开发现状与展望[J].大庆石油地质与开发,2008,15(6):10-14.
• [2]姜立臣.国内页岩气开发发展现状及其发展前景分析[J].中国石油和化工标准与质量,2014,(9):185.
• [3]张小龙,张同伟,李艳芳,等.页岩气勘探和开发进展综述[J].岩性油气藏,2013,25(2):116-122.
• [4]王中华.国内页岩气开采技术进展[J].中外能源,2013,18(2):23-32.
• [5]范厚江.世界页岩气勘探开发现状[J].油气地球物理.2013,11(2):37-41.
• [6]马宁,侯读杰,包书景,等.页岩气资源潜力评价方法[J].油气地质与采收率,2012,19(6):25-29,112.
• [7] Mattar L,Moghadam S. Modified power law exponential decline for tight gas[C]//Calgary:Canadian International Petroleum Conference(CIPC),2009.
• [8] Fulford D S,Blasingame T A. Evaluation of time-rate performance of shale wells using the transient hyperbolic relation[R]. SPE167242,2013.
• [9] Valko P P. Assigning value to stimulation in the Barnett Shale:a simultaneous analysis of 7000 plus production histories and well completion records[C]//Society of Petroleum Engineers,2009.
• [10] Valko P P,Lee W J. A better way to forecast production from unconventional gas wells[C]//Society of Petroleum Engineers,2010.
• [11] Duong A N. An unconventional rate decline approach for tight and fracture-dominated gas wells[R]. SPE 137748,2010.
• [12] Yu Shaoyong,Lee W J,Miocevic D J,et al. Estimating proved reserves in tight/shale wells using the modified SEPD method[R]. SPE 166198,2013.
• [13] Yu Shaoyong. Best practice of using empirical methods for production forecast and EUR estimation in tight/shale gas reservoirs[R]. SPE 167118,2013.
• [14]刘传斌,姜汉桥,李俊键,等.预测页岩气产量递减组合模型的研究[J].断块油气田,2015,22(4):481-483.
• [15]刘传斌,姜汉桥,李俊键,等,预测页岩气产量递减变化组合模型的探讨[J].断块油气田,2015,22(6):770-772.
• [16] Arps J J. Analysis of decline curves[R]. SPE 945228,1944.
• [17]张天泽.页岩储层产量曲线分析[J].大庆石油地质与开发,2017,36(2):154-159.
• [18]胡建国,张栋杰.产量指数递减分析的自回归模型[J].大庆石油地质与开发,1997,16(1):43-47,77.
• [19] Lee W J. Gas reserves estimation in resource plays[R]. SPE130102,2010.
• [20]王川杰,袁续祖,高威,等.威远气田页岩气井产量递减分析方法研究[J].天然气勘探与开发,2014,37(1):55-59.
• [21]雷丹凤,王莉,张晓伟,等.页岩气井扩展指数递减模型研究[J].断块油气田,2014,21(1):66-68,82.
• [22]朱圣举,张皎生,安小平.剩余可采储量采油速度与Arps递减规律关系[J].特种油气藏,2016,23(4):105-108,156.
• [23]张荻萩,李治平,苏皓.页岩气产量递减规律研究[J].岩性油气藏,2015,27(6):138-144.
• [24]白玉湖,杨皓,陈桂华,等.页岩气产量递减典型曲线应用分析[J].可再生能源,2013,31(5):115-119.
• [25]白玉湖,杨皓,陈桂华,等.页岩气产量递减典型曲线中关键参数的确定方法[J].特种油气藏,2013,20(2):65-68,154.
• [26]陈元千,吕恒宇,傅礼兵,等.注水开发油田加密调整效果的评价方法[J].油气地质与采收率,2017,24(6):1-5.