致密气藏压裂水平井反卷积试井模型

doi:10.7623/syxb201607008

石油学报 ›› 2016, Vol. 37 ›› Issue (7): 898-902,938.DOI: 10.7623/syxb201607008

致密气藏压裂水平井反卷积试井模型

王飞, 潘子晴

中国石油大学石油工程教育部重点实验室北京 102249

收稿日期:2015-09-05 修回日期:2016-06-02 出版日期:2016-07-25 发布日期:2016-07-28
通讯作者: 王飞,女,1982年10月生,2006年获中国石油大学(北京)石油工程专业学士学位,2010年获英国Heriot-Watt大学石油工程专业博士学位,现为中国石油大学(北京)石油工程学院讲师,主要从事油气田开发方面的教学与科研工作。Email:wangfei@cup.edu.cn
基金资助:
国家自然科学基金项目（No.51504266）、北京市自然科学基金项目（No.3154038）和中国石油大学（北京）科研基金项目（2462015YQ0212）资助。

Deconvolution-based well test model for the fractured horizontal wells in tight gas reservoirs

Wang Fei, Pan Ziqing

Key Laboratory of Petroleum Engineering of the Ministry of Education, China University of Petroleum, Beijing 102249, China

Received:2015-09-05 Revised:2016-06-02 Online:2016-07-25 Published:2016-07-28

摘要/Abstract

摘要：

致密气储层的渗透率非常低，通常在0.1 mD以下，使得此类气井压裂后长时间无法达到地层径向流动状态，因此通过单个试井测试段数据无法解释出储层有效渗透率，进而无法确定水力裂缝有效半长；此外，井筒储集效应往往掩盖早期裂缝中的流态，导致裂缝导流能力这一关键完井参数求取困难。在缺失早期裂缝中流态和中期径向流态的情况下，如果强制拟合试井曲线，往往获得不唯一且偏差过大的参数解。针对这一问题，进行了反卷积试井分析方法研究。通过改进Schroeter反卷积数学模型并编制求解算法，实现了用短期试井数据和长期产量数据反演气藏瞬态压力响应历史的过程。数值试井算例验证了提出的反卷积模型及算法的正确性，反卷积后的瞬态压力响应去除了井筒储集效应，使裂缝线性流和地层径向流获得有效恢复。现场实例应用验证了提出的反卷积压力恢复试井分析方法的可行性，并证明短期的压力恢复试井数据亦能用于裂缝和储层动态参数计算，从而定量评价致密气藏水平井水力压裂施工效果。

关键词: 致密气藏, 压裂水平井, 反卷积, 流态恢复, 试井

Abstract:

Tight gas reservoirs generally have low permeability (< 0.1 mD), in which the gas can hardly reach the radial flow state after well fracturing for a long time. As a consequence, the effective permeability of these reservoirs cannot be explained using the single-well test data, and then the effective half-length of hydraulic fracture cannot be determined. Besides, the gas flow state in early cracks is always unclear due to the well bore accumulation effect, thus causing great difficulties in the calculation of fracture conductivity (a key well completion parameter). When the flow state in early cracks and the medium-term radial flow state are unknown, the mandatory fitting of well-test curves may easily result in the non-unique parameter solutions with large deviations. To overcome this problem, this study proposes a deconvolution-based well-test analysis method. By modifying the Schroeter deconvolution mathematical model and formulating the solution algorithm, the transient pressure response history of gas reservoirs can be retrieved based on the short-term well test data and long-term production data. Furthermore, the correctness of the proposed deconvolution-based model and algorithm is verified using the numerical well test calculation equations. Results show that the transient pressure response after deconvolution can successfully eliminate the well bore accumulation effect and effectively recover the linear flows in fractures and radial flows in formation. Finally, the feasibility of the deconvolution-based pressure buildup testing method is proved through field application, but also demonstrate that the short-term pressure buildup well test data can also be used to calculate the dynamic parameters of fractures and reservoirs, and further quantitatively evaluate the hydraulic fracturing construction of horizontal wells in tight gas reservoirs.

Key words: tight gas reservoir, fractured horizontal well, deconvolution, recovery of flow state, well test

中图分类号:

TE353

王飞, 潘子晴. 致密气藏压裂水平井反卷积试井模型[J]. 石油学报, 2016, 37(7): 898-902,938.

Wang Fei, Pan Ziqing. Deconvolution-based well test model for the fractured horizontal wells in tight gas reservoirs[J]. Acta Petrolei Sinica, 2016, 37(7): 898-902,938.

参考文献

[1] 康毅力,罗平亚.中国致密砂岩气藏勘探开发关键工程技术现状与展望[J].石油勘探与开发,2007,34(2):239-245.
Kang Yili,Luo Pingya.Current status and prospect of key techniques for exploration and production of tight sandstone gas reservoirs in China[J].Petroleum Exploration and Development,2007,34(2):239-245.
[2] 戴金星,倪云燕,吴小奇.中国致密砂岩气及在勘探开发上的重要意义[J].石油勘探与开发,2012,39(3):257-264.
Dai Jinxing,Ni Yunyan,Wu Xiaoqi.Tight gas in China and its significance in exploration and exploitation[J].Petroleum Exploration and Development,2012,39(3):257-264.
[3] 张荣虎,杨海军,王俊鹏, 等.库车坳陷超深层低孔致密砂岩储层形成机制与油气勘探意义[J].石油学报, 2014,35(6):1057-1069.
Zhang Ronghu,Yang Haijun,Wang Junpeng,et al.The formation mechanism and exploration significance of ultra-deep,low-porosity and tight sandstone reservoirs in Kuqa depression,Tarim Basin[J].Acta Petrolei Sinica,2014,35(6):1057-1069.
[4] 吴奇,胥云,张守良, 等.非常规油气藏体积改造技术核心理论与优化设计关键[J].石油学报, 2014,35(4):706-714.
Wu Qi,Xu Yun,Zhang Shouliang,et al.The core theories and key optimization designs of volume stimulation technology for unconventional reservoirs[J].Acta Petrolei Sinica,2014,35(4):706-714.
[5] Ozkan E,Brown M L,Raghavan R S,et al.Comparison of fractured horizontal-well performance in conventional and unconventional reservoirs[R].SPE 121290,2009.
[6] Brown M L,Ozkan E,Raghavan R S,et al.Practical solutions for pressure transient responses of fractured horizontal wells in unconventional reservoirs[R].SPE 125043,2009.
[7] 姚军,刘丕养,吴明录.裂缝性油气藏压裂水平井试井分析[J].中国石油大学学报:自然科学版,2013,37(5):107-113.
Yao Jun,Liu Piyang,Wu Minglu.Well test analysis of fractured horizontal well in fractured reservoirs[J].Journal of China University of Petroleum:Edition of Natural Science,2013,37(5):107-113.
[8] 王晓东,罗万静,侯晓春,等.矩形油藏多段压裂水平井不稳态压力分析[J].石油勘探与开发,2014,41(1):74-78.
Wang Xiaodong,Luo Wanjing,Hou Xiaochun,et al.Transient pressure analysis of multiple-fractured horizontal wells in boxed reservoirs[J].Petroleum Exploration and Development,2014,41(1):74-78.
[9] Al-Kobaisi M,Ozkan E,Kasogi H,et al.Pressure transient analysis of horizontal wells with transverse,finite-conductivity fractures[R].PETSOC 2006-126,2006.
[10] Zerzar A,Tiab D,Bettam Y.Interpretation of multiple hydraulically fractured horizontal wells[R].SPE 88707,2004.
[11] Luo Shanqiang,Neal L,Arulampalam P,et al.Flow regime analysis of multi-stage hydraulically-fractured horizontal wells with reciprocal rate derivative function:Bakken case study[R].SPE 137514,2010.
[12] Cheng Yueming.Pressure transient characteristics of hydraulically fractured horizontal shale gas wells[R].SPE 149311,2011.
[13] Song Bo,Economides M J,Ehlig-Economides C A.Design of multiple transverse fracture horizontal wells in shale gas reservoirs[R].SPE 140555,2011.
[14] Wang Fei,Zhang Shicheng,Liu Bailong.Pressure transient analysis of multi-stage hydraulically fractured horizontal wells[J].Journal of Petroleum Science Research,2013,2(4):162-166.
[15] Gringarten A C.Practical use of well test deconvolution[R].SPE 134534,2010.
[16] Scott H L,John L W,Ted A.An algorithm for determining smooth,continuous pressure derivatives from well test data[R].SPE 20112,1991.
[17] Iseger P D.Numerical transform inversion using Gaussian quadrature[J].Probability in the Engineering and Informational Sciences,2006,20(1):1-44.
[18] Al-Ajmi N M,Ahmadi M,Ozkan E,et al.Numerical inversion of Laplace transforms in the solution of transient flow problems with discontinuities[R].SPE 116255,2008.
[19] Von Schroeter T,Hollaender F,Gringarten A C.Analysis of well test data from permanent downhole gauges by deconvolution[R].SPE 77688,2002.
[20] Baygü B,Kuchuk F J,Arikan O.Deconvolution under normalized auto correlation constraints[R].SPE 28405,1997.
[21] Onur M,Kuchuk F J.A new pressure-rate deconvolution technique based on pressure derivatives for pressure transient test interpretation[R].SPE 134315,2010.
[22] Levitan M M.Practical application of pressure-rate deconvolution to analysis of real well tests[J].SPE Reservoir Evaluation & Engineering,2005,8(2):113-121.
[23] Ilk D,Anderson D M,Valko P P,et al.Analysis of gas-well reservoir performance data using B-spline deconvolution[R].SPE 100573,2006

致密气藏压裂水平井反卷积试井模型

Deconvolution-based well test model for the fractured horizontal wells in tight gas reservoirs

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	姜瑞忠, 何吉祥, 姜宇, 范海军. 页岩气藏压裂水平井Blasingame产量递减分析方法建立与应用[J]. 石油学报, 2019, 40(12): 1503-1510.
[2]	欧阳伟平, 孙贺东, 张冕. 考虑应力敏感的致密气多级压裂水平井试井分析[J]. 石油学报, 2018, 39(5): 570-577.
[3]	陈林. 气井多相流水击数学模型的建立和求解[J]. 石油学报, 2017, 38(7): 813-820.
[4]	曾焱, 王本成, 聂仁仕. 线性复合油藏多级压裂水平井渗流模型[J]. 石油学报, 2017, 38(6): 687-695,720.
[5]	林加恩, 何辉, 韩章英. 未出现径向流的试井典型曲线及其分析方法[J]. 石油学报, 2017, 38(5): 562-569.
[6]	傅宁, 杨树春, 贺清, 徐微, 林青. 鄂尔多斯盆地东缘临兴-神府区块致密砂岩气高效成藏条件[J]. 石油学报, 2016, 37(S1): 111-120.
[7]	魏明强, 段永刚, 方全堂, 李政澜, 李安豪. 基于物质平衡修正的页岩气藏压裂水平井产量递减分析方法[J]. 石油学报, 2016, 37(4): 508-515.
[8]	朱华银, 徐轩, 安来志, 郭长敏, 肖佳蕊. 致密气藏孔隙水赋存状态与流动性实验[J]. 石油学报, 2016, 37(2): 230-236.
[9]	杨朝蓬, 李星民, 刘尚奇, 高树生, 叶礼友, 刘剑. 苏里格低渗致密气藏阈压效应[J]. 石油学报, 2015, 36(3): 347-354.
[10]	任龙, 苏玉亮, 郝永卯, 张琪, 孟凡坤, 盛广龙. 基于改造模式的致密油藏体积压裂水平井动态分析[J]. 石油学报, 2015, 36(10): 1272-1279.
[11]	苏玉亮, 王文东, 盛广龙. 体积压裂水平井复合流动模型[J]. 石油学报, 2014, 35(3): 504-510.
[12]	王本成, 贾永禄, 李友全, 聂仁仕, 于伟杰, 蔡明金. 多段压裂水平井试井模型求解新方法[J]. 石油学报, 2013, 34(6): 1150-1156.
[13]	曾凡辉, 郭建春, 刘恒, 尹建. 致密砂岩气藏水平井分段压裂优化设计与应用[J]. 石油学报, 2013, 34(5): 959-968.
[14]	欧阳伟平, 刘曰武. 射孔完井参数对试井理论曲线的影响[J]. 石油学报, 2013, 34(3): 528-534.
[15]	杨　华　付金华　刘新社　范立勇. 苏里格大型致密砂岩气藏形成条件及勘探技术[J]. 石油学报, 2012, 33(S1): 27-36.