裂缝性致密碳酸盐岩储层酸压多场耦合数值模拟与应用

doi:10.7623/syxb202010006

石油学报 ›› 2020, Vol. 41 ›› Issue (10): 1219-1228.DOI: 10.7623/syxb202010006

裂缝性致密碳酸盐岩储层酸压多场耦合数值模拟与应用

郭建春¹, 任冀川¹, 王世彬¹, 苟波¹, 赵俊生², 伍林²

1. 西南石油大学油气藏地质及开发工程国家重点实验室四川成都 610500;
2. 中国石油西南油气田公司川中油气矿四川遂宁 629000

收稿日期:2019-07-16 修回日期:2020-08-12 出版日期:2020-10-25 发布日期:2020-11-05
通讯作者: 任冀川,男,1988年12月生,2011年获西南石油大学学士学位,2014年获西南石油大学硕士学位,现为西南石油大学博士研究生,主要从事油气藏增产理论与技术方面的研究。Email:rencjichuan_petro@qq.com
作者简介:郭建春,男,1970年9月生,1992年获西南石油学院学士学位,1998年获西南石油学院博士学位,现为西南石油大学教授、博士生导师,主要从事油气开采领域的教学与科研工作。Email:guojianchun@vip.163.com
基金资助:
国家杰出青年科学基金项目（No.51525404）、国家自然科学基金项目（No.51704249）和中国博士后科学基金项目（2017M623063）资助。

Numerical simulation and application of multi-field coupling of acid fracturing in fractured tight carbonate reservoirs

Guo Jianchun¹, Ren Jichuan¹, Wang Shibin¹, Gou Bo¹, Zhao Junsheng², Wu Lin²

1. State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Sichuan Chengdu 610500, China;
2. Central Sichuan Oil and Gas Field, PetroChina Southwest Oil and Gas Field Company, Sichuan Suining 629000, China

Received:2019-07-16 Revised:2020-08-12 Online:2020-10-25 Published:2020-11-05

摘要/Abstract

摘要：

深层高温致密裂缝性碳酸盐岩储层中，酸液在天然裂缝中的动态滤失减弱了酸液对水力裂缝的刻蚀，影响了酸压改造效果。为了提高此类储层酸压设计的准确性及有效性，建立了耦合裂缝扩展与天然裂缝动态滤失的"流场-温度场-化学场"三场耦合前置液酸压模型。以磨溪气田龙王庙组X井为例，采用所建立的酸压模型，基于酸压施工压力数据拟合获取了储层天然裂缝特征参数，分析了天然裂缝动态滤失特征及其对酸压裂缝参数的影响；基于无因次产能指数综合评价了不同施工参数下的酸压改造效果。研究结果表明：①酸液在天然裂缝的动态滤失对缝内流动、温度均存在较大影响，天然裂缝滤失的精确计算是准确模拟预测酸压效果的关键；②裂缝性储层中的酸液滤失量并不随注酸时间的增加而降低，而是随着沟通天然裂缝数量的增加呈现出锯齿状的动态平衡；③在裂缝性致密碳酸盐岩储层中，最优注酸排量随注酸量的增加而提高，天然裂缝滤失是施工参数优化最重要的影响因素；④综合考虑施工条件及经济因素，X井的最优注酸参数中注酸量为500~600 m³、注酸排量为6 m³/min，优化后计算得到的无因次产能指数为拟合所得的2.5倍。

关键词: 裂缝性碳酸盐岩, 多场耦合, 酸压, 天然裂缝, 施工参数优化, 数值模拟

Abstract:

In deep, high-temperature and tight fractured carbonate reservoirs, the dynamic leak-off of acid in natural fractures weakens the etching effect of acid on hydraulic fractures, thus affecting the effect of acid fracturing treatment. To improve the accuracy and effectiveness of acid fracturing design of such kind of reservoir, this study establishes an acid fracturing model for the "flow field-temperature field-chemical field" coupling of the fracture propagation and the dynamic leak-off of natural fractures. Taking Well X of the Longwangmiao Formation in the Moxi Gas Field as an example, using the established acid fracturing model, based on the fitting of acid fracturing treatment pressure data, this study obtains the characteristic parameters of natural fractures in the reservoir, and analyzes the dynamic leak-off characteristics of natural fractures and their effect on the parameters of acid fracturing fractures; additionally, based on the dimensionless productivity index, it comprehensively evaluates the effect of acid fracturing treatment under different treatment parameters. The results show that:(1)the dynamic leak-off of acid in natural fractures has a great influence on the flow and temperature. Accurately calculating the dynamic leak-off is the key to precisely simulate and predict the results of acid fracturing; (2)in fractured reservoirs, the leak-off of acid does not decrease with the increase of acid injection time, but shows a zigzag dynamic balance with the increase of communicating natural fractures; (3)in fractured tight carbonate reservoirs, the optimal acid injection displacement increases with the increasing injection acid volume. The leak-off of natural fractures is the most important factor for the optimization of construction parameters; (4)as comprehensively considering treatment conditions and economic factors, the optimal acid injection parameters of Well X are determined as:acid injection of 500-600 m³, acid injection displacement of 6 m³/min, and the dimensionless productivity index obtained after optimization is 2.5 times greater than the fitting result.

Key words: fractured tight carbonate reservoir, multi-field coupling, acid fracturing, natural fracture, treatment parameters optimization, numerical simulation

中图分类号:

TE357

郭建春, 任冀川, 王世彬, 苟波, 赵俊生, 伍林. 裂缝性致密碳酸盐岩储层酸压多场耦合数值模拟与应用[J]. 石油学报, 2020, 41(10): 1219-1228.

Guo Jianchun, Ren Jichuan, Wang Shibin, Gou Bo, Zhao Junsheng, Wu Lin. Numerical simulation and application of multi-field coupling of acid fracturing in fractured tight carbonate reservoirs[J]. Acta Petrolei Sinica, 2020, 41(10): 1219-1228.

参考文献

[1] 赵文智,胡素云,刘伟,等. 再论中国陆上深层海相碳酸盐岩油气地质特征与勘探前景[J].天然气工业,2014,34(4):1-9.
ZHAO Wenzhi,HU Suyun,LIU Wei,et al.Petroleum geological features and exploration prospect in deep marine carbonate strata onshore China:a further discussion[J].Natural Gas Industry,2014,34(4):1-9.
[2] 魏国齐,杨威,谢武仁,等.四川盆地震旦系-寒武系天然气成藏模式与勘探领域[J].石油学报,2018,39(12):1317-1327.
WEI Guoqi,YANG Wei,XIE Wuren,et al.Accumulation modes and exploration domains of Sinian-Cambrian natural gas in Sichuan Basin[J].Acta Petrolei Sinica,2018,39(12):1317-1327.
[3] 李国欣,赵太平,石玉江,等.鄂尔多斯盆地马家沟组碳酸盐岩储层成岩相测井识别评价[J].石油学报,2018,39(10):1141-1154.
LI Guoxin,ZHAO Taiping,SHI Yujiang,et al.Diagenetic facies logging recognition and evaluation of carbonate reservoirs in Majiagou Formation,Ordos Basin[J].Acta Petrolei Sinica,2018,39(10):1141-1154.
[4] 严威,杨果,易艳,等.塔里木盆地柯坪地区上震旦统白云岩储层特征与成因[J].石油学报,2019,40(3):295-307.
YAN Wei,YANG Guo,YI Yan,et al.Characteristics and genesis of Upper Sinian dolomite reservoirs in Keping area,Tarim Basin[J].Acta Petrolei Sinica,2019,40(3):295-307.
[5] 杨跃明,杨雨,杨光,等.安岳气田震旦系、寒武系气藏成藏条件及勘探开发关键技术[J].石油学报,2019,40(4):493-508.
YANG Yueming,YANG Yu,YANG Guang,et al.Gas accumulation conditions and key exploration & development technologies of Sinian and Cambrian gas reservoirs in Anyue gas field[J].Acta Petrolei Sinica,2019,40(4):493-508.
[6] 胥耘,黄志诚.拟三维酸压设计软件研究与应用[J].石油钻采工艺,1996,18(1):69-75.
XU Yun,HUANG Zhicheng.Study and application of pseudo-three-dimensional acid-fracturing design software[J].Oil Drilling & Production Technology,1996,18(1):69-75.
[7] SETTARI A,SULLIVAN R B,HANSEN C E.A new two-dimensional model for acid-fracturing design[J].SPE Production & Facilities,2001,16(4):200-209.
[8] ROMERO J,GU H,GULRAJANI S N.3D transport in acid-fracturing treatments:theoretical development and consequences for hydrocarbon production[J].SPE Production & Facilities,2001,16(2):122-130.
[9] 焦国盈,赵立强,刘平礼,等.全三维酸液流动反应模型在酸压中的应用[J].天然气工业,2006,26(4):62-64.
JIAO Guoying,ZHAO Liqiang,LIU Pingli,et al.Application of fully 3-D reaction model of acidizing fluid in acid fracturing[J].Natural Gas Industry,2006,26(4):62-64.
[10] 薛衡,黄祖熹,赵立强,等.考虑岩矿非均质性的前置液酸压模拟研究[J].天然气工业,2018,38(2):59-66.
XUE Heng,HUANG Zuxi,ZHAO Liqiang,et al.A simulation study on the preflush acid fracturing considering rock heterogeneity[J]Natural Gas Industry,2018,38(2):59-66.
[11] HILL A D,Zhu Ding,WANG Y,et al.The effect of wormholing on the fluid loss coefficient in acid fracturing[J].SPE Production & Facilities,1995,10(4):257-264.
[12] GUO Jianchun,LIU Yuxuan.A comprehensive model for simulating fracturing fluid leakoff in natural fractures[J].Journal of Natural Gas Science and Engineering,2014,21:977-985.
[13] MOU Jianye,ZHANG Shicheng,ZHANG Ye.Acid leakoff mechanism in acid fracturing of naturally fractured carbonate oil reservoirs[J].Transport in Porous Media, 2012,91(2):573-584.
[14] UGURSAL A,ZHU Ding,HILL A D.Development of acid fracturing model for naturally fractured reservoirs[J].SPE Production & Operations,2019,34(4):735-748.
[15] WHITSITT N F,DYSART G R.The Effect of temperature on stimulation design[J].Journal of Petroleum Technology,1970,22(4):493-502.
[16] ZHU Ding,HILL A D.The effect of temperature on minifrac pressure decline[R]:SPE 22874,1991.
[17] LEE M H,ROBERTS L D.Effect of heat of reaction on temperature distribution and acid penetration in a fracture[J].Society of Petroleum Engineers Journal,1980,20(6):501-507.
[18] GUO Jianchun,LIU Huifeng,ZHU Yuanqiang,et al.Effects of acid-rock reaction heat on fluid temperature profile in fracture during acid fracturing in carbonate reservoirs[J].Journal of Petroleum Science and Engineering,2014,122:31-37.
[19] ALJAWAD M S,ZHU Ding,HILL A D.Temperature and geometry effects on the fracture surfaces dissolution patterns in acid fracturing[R].SPE 190819s,2018.
[20] 申颍浩,葛洪魁,程远方,等.水力压裂拟三维模型数值求解新方法[J].科学技术与工程,2014,14(26):219-223.
SHEN Yinghao,GE Hongkui,CHENG Yuanfang,et al.Algorithm renew study of hydraulic fracture pseudo-three dimensional model[J].Science Technology and Engineering,2014,14(26):219-223.
[21] ENGLAND A H,GREEN A E.Some two-dimensional punch and crack problems in classical elasticity[J].Mathematical Proceedings of the Cambridge Philosophical Society,1963,59(2):489-500.
[22] OLSON J E.Fracture aperture,length and pattern geometry development under biaxial loading:a numerical study with applications to natural,cross-jointed systems[J].Geological Society,London,Special Publications,2007,289(1):123-142.
[23] DONG C,ZHU D,HILL A D.Modeling of the acidizing process in naturally fractured carbonates[J].SPE Journal,2002,7(4):400-408.
[24] 陶文铨.数值传热学[M].2版.西安:西安交通大学出版社,2001.
TAO Wenquan.Numerical heat transfer[M].2nd ed.Xi'an:Xi'an Jiaotong University Press,2001.
[25] 刘伟,范爱武,黄晓明.多孔介质传热传质理论与应用[M].北京:科学出版社,2006.
LIU Wei,FAN Aiwu,HUANG Xiaoming.Theory and application of heat and mass transfer in porous media[M].Beijing:Science Press,2006.
[26] EICKMEIER J R,ERSOY D,RAMEY H J.Wellbore temperatures and heat losses during production or injection operations[J].Journal of Canadian Petroleum Technology, 1970,9(2):115-121.
[27] NORDGREN R P.Propagation of a vertical hydraulic fracture[J].Society of Petroleum Engineers Journal,1972,12(4):306-314.
[28] TERRILL R M.Heat transfer in laminar flow between parallel porous plates[J].International Journal of Heat and Mass Transfer,1965,8(12):1491-1497.
[29] SCHECHTER R S.Oil well stimulation.Englewood Cliffs,New Jersey:Prentice-Hall,1992.
[30] DENG Jiayao,MOU Jianye,HILL A D,et al.A new correlation of acid-fracture conductivity subject to closure stress[J].SPE Production & Operations,2011,27(2):158-169.
[31] UGURSAL A,SCHWALBERT M P,ZHU Ding,et al.Acid fracturing productivity model for naturally fractured carbonate reservoirs[R].SPE 191433,2018.

裂缝性致密碳酸盐岩储层酸压多场耦合数值模拟与应用

Numerical simulation and application of multi-field coupling of acid fracturing in fractured tight carbonate 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]	许林, 刘书杰, 许明标, 冯桓榰, 邢希金, 邓佳佳. 压差激活密封剂的微缺陷自适应修复行为及机理[J]. 石油学报, 2021, 42(5): 686-694.
[2]	邹玮, 余一欣, 刘金水, 蒋一鸣, 唐贤君, 陈石, 余浪. 东海盆地西湖凹陷中央反转构造带发育主控因素及宁波背斜形成过程[J]. 石油学报, 2021, 42(2): 176-185.
[3]	祝效华, 罗云旭, 刘伟吉, 高锐, 贾玉丹, 刘呈君. 等离子体电脉冲钻井破岩机理的电击穿实验与数值模拟方法[J]. 石油学报, 2020, 41(9): 1146-1162.
[4]	李文婧, 姜源, 单保东, 禹晓珊, 王超. 盐穴储气库注采运行时温效应对腔体稳定性的影响[J]. 石油学报, 2020, 41(6): 762-776.
[5]	窦晓峰, 宁伏龙, 李彦龙, 刘昌岭, 孙嘉鑫, 李杨, 李晓东, 赵颖杰, 张凌, 刘乐乐. 基于连续-离散介质耦合的水合物储层出砂数值模拟[J]. 石油学报, 2020, 41(5): 629-642.
[6]	齐宁, 陈国彬, 李振亮, 梁冲, 何龙. 基于分步算法的裂缝性碳酸盐岩油藏大尺度酸化数值模拟[J]. 石油学报, 2020, 41(3): 348-362,371.
[7]	计秉玉. 对油气藏工程研究方法发展趋势的几点认识[J]. 石油学报, 2020, 41(12): 1774-1778.
[8]	韩强, 屈展, 叶正寅. 基于多尺度均匀化理论的页岩强度表征[J]. 石油学报, 2019, 40(7): 858-865.
[9]	苏皓, 雷征东, 李俊超, 龚斌, 赵文琪, 鞠斌山, 张荻萩, 秦鹤. 储集层多尺度裂缝高效数值模拟模型[J]. 石油学报, 2019, 40(5): 587-593,634.
[10]	解宁, 李文婧. 地下盐穴储气库盐岩热损伤机理[J]. 石油学报, 2019, 40(3): 357-369,382.
[11]	孙博, 周博. 胶结型天然裂缝对水力裂缝影响的数值计算模型及机理[J]. 石油学报, 2019, 40(11): 1376-1387.
[12]	吴俊晨, 范宜仁, 曹军涛, 范卓颖, 王小龙, 吴飞. 基于大尺寸地层模型的砂岩储层油基钻井液侵入模拟[J]. 石油学报, 2019, 40(11): 1407-1414.
[13]	杨震, 马清明, 杨宁宁, 崔海波, 李运升. 基于正交天线的随钻方位电磁波电阻率成像响应特征模拟[J]. 石油学报, 2018, 39(9): 1063-1069.
[14]	刘顺, 何衡, 赵倩云, 周德胜. 水力裂缝与天然裂缝交错延伸规律[J]. 石油学报, 2018, 39(3): 320-326,334.
[15]	徐保蕊, 蒋明虎, 赵立新, 王月文, 张晓光, 邓鑫. 螺旋分离器水流动特性的CFD模拟与PIV试验[J]. 石油学报, 2018, 39(2): 223-231.