岩性油气藏 ›› 2020, Vol. 32 ›› Issue (1): 152–160.doi: 10.12108/yxyqc.20200117

• 石油工程 • 上一篇    下一篇

川西潮坪相裂缝型碳酸盐岩分层酸压井压力动态分析

史文洋1, 姚约东1, 程时清1, 顾少华2, 石志良2   

  1. 1. 中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249;
    2. 中国石油化工股份有限公司 石油勘探开发研究院, 北京 100083
  • 收稿日期:2019-06-27 修回日期:2019-08-26 出版日期:2020-01-21 发布日期:2019-11-22
  • 作者简介:史文洋(1991-),男,中国石油大学(北京)在读博士研究生,研究方向为油气田开发工程。地址:(102249)北京市昌平区府学路18号中国石油大学(北京)。Email:svenyoko@outlook.com。
  • 基金资助:
    中国石化科技攻关项目“龙门山前雷口坡组气藏综合评价及开发技术政策研究”（编号：P16111）资助

Pressure transient analysis for separate-layer acid fracturing well of tidal flat fractured carbonate reservoirs in western Sichuan Basin

SHI Wenyang1, YAO Yuedong1, CHENG Shiqing1, GU Shaohua2, SHI Zhiliang2   

  1. 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
    2. Research Institute of Exploration&Production, SINOPEC, Beijing 100083, China
  • Received:2019-06-27 Revised:2019-08-26 Online:2020-01-21 Published:2019-11-22

PDF (PC)

319

摘要： 为全面反映储层分层酸压后复杂的流动特征，针对潮坪相类碳酸盐岩储层，建立了考虑层间窜流的裂缝型碳酸盐岩分层酸压改造井不稳定压力模型，并利用拉氏变换和数值反演得到井底压力动态响应。根据典型曲线划分了流动阶段，分析了层间物性差异、层间窜流、分层改造差异对压力响应的影响规律。结果表明：潮坪相裂缝型碳酸盐岩分层酸压改造储层存在7个流动阶段，同时具有复合储层和多层窜流储层的流动特征；层间物性差异越大，层间窜流及压力导数曲线“凹子”越明显；分层酸压改造程度及改造范围均影响过渡流出现的时间和程度；高渗层流度比越大，过渡流阶段压力导数上升越明显，最终压力导数值为高渗层流度比的一半。本次研究建立的模型提供了一种快速识别储层高渗层改造程度的方法，对多层裂缝型碳酸盐岩的酸压效果评价、分层酸压改造程度的确定具有理论支撑作用。

关键词: 裂缝型碳酸盐岩, 层间窜流, 分层酸压改造, 压力动态分析, 雷口坡组, 川西潮坪相

Abstract: In order to reflect the complex flow characteristics of reservoir after separate-layer acid fracturing, aiming at tidal flat fractured carbonate reservoir,a pressure transient analysis model considering crossflow for separate-layer acid fracturing wells in fractured carbonate reservoir was established,and the bottom-hole pressure was obtained by Laplace transformation and numerical inversion. According to the type curves of pressure and its derivative,the flow stages were identified and divided,and the effects of interlayer physical property differences, crossflow and separate-layer modification differences on pressure response were analyzed. The results show that there are seven flow stages of tidal flat fractured carbonate reservoir in separate-layer acid fracturing,and the type curve has the flow characteristics of composite model and layered crossflow model. The greater the difference of interlayer properties,the more obvious the crossflow and concave on the pressure derivative curve are. The separate-layer acid fracturing degree and scope both affect the time and scale of transition flow occurrence. The higher the mobility ratio of high-permeability layer is,the more obvious the transition flow stage is,and the pressure derivative value is the half of the mobility ratio of high-permeability layer during outer radial flow stage. The model can provide a method for quickly identifying the acid fracturing degree of high-permeability layer, which can be used to evaluate the acid fracturing effect of multi-layer fractured carbonate reservoir and determine the degree of acid fracturing modification of individual layer.

Key words: fractured carbonate reservoir, crossflow, separate-layer acid fracturing, pressure transient analysis, Leikoupo Formation, tidal flat facies in western Sichuan Basin

中图分类号: 

  • TE357.2
[1] WU X, CHEN Y, LIU G, et al. Geochemical characteristics and origin of natural gas reservoired in the 4th member of the Middle Triassic Leikoupo Formation in the western Sichuan Depression, Sichuan Basin, China. Journal of Natural Gas Geoscience, 2017, 2(2):99-108.
[2] 许国明, 宋晓波, 冯霞, 等.川西地区中三叠统雷口坡组天然气勘探潜力.天然气工业, 2013, 33(8):8-14. XU G M, SONG X B, FENG X, et al. Gas potential of the Middle Triassic Leikoupo Fm in the western Sichuan Basin. Natural Gas Industry, 2013, 33(8):8-14.
[3] 李书兵, 许国明, 宋晓波.川西龙门山前构造带彭州雷口坡组大型气田的形成条件.中国石油勘探, 2016, 21(3):74-82. LI S B, XU G M, SONG X B. Forming conditions of Pengzhou large gas field of Leikoupo Formation in Longmenshan piedmont tectonic belt,western Sichuan Basin. China Petroleum Exploration, 2016, 21(3):74-82.
[4] 宋晓波, 王琼仙, 隆轲, 等. 川西地区中三叠统雷口坡组古岩溶储层特征及发育主控因素.海相油气地质, 2013, 18(2):8-14. SONG X B, WANG Q X, LONG K, et al. Characteristics and main controlling factors of Middle Triassic Leikoupo paleokarst reservoirs in western Sichuan Basin. Marine Origin Petroleum Geology, 2013, 18(2):8-14.
[5] 赵向原, 胡向阳, 肖开华, 等.川西彭州地区雷口坡组碳酸盐岩储层裂缝特征及主控因素. 石油与天然气地质, 2018, 39(1):30-39. ZHAO X Y, HU X Y, XIAO K H, et al. Characteristics and major control factors of natural fractures in carbonate reservoirs of Leikoupo Formation in Pengzhou area,western Sichuan Basin. Oil & Gas Geology, 2018, 39(1):30-39.
[6] 王志宏, 郝翠果, 李建明, 等.川西前陆盆地超压分布及成因机制.岩性油气藏, 2019, 31(6):36-43. WANG Z H, HAO C G, LI J M,et al. Distribution and genetic mechanism of overpressure in western Sichuan Foreland Basin. Lithologic Reservoirs, 2019, 31(6):36-43.
[7] 蒋廷学, 王海涛, 卞晓冰, 等.水平井体积压裂技术研究与应用.岩性油气藏, 2018, 30(3):1-11. JIANG T X, WANG H T, BIAN X B, et al. Volume fracturing technology for horizontal well and its application. Lithologic Reservoirs, 2018, 30(3):1-11.
[8] KUCHUK F J, BIRYUKOV D. Transient pressure test interpretation from continuously and discretely fractured reservoirs. SPE 158096, 2012.
[9] UBA M H, CHIFFOLEAU Y, PHAM T R, et al. Application of a hybrid dual porosity dual permeability representation of largescale fractures to the simulation of a giant carbonate reservoir. SPE 105560, 2007.
[10] GAO B, HUANG Z Q, YAO J, et al. Pressure transient analysis of a well penetrating a filled cavity in naturally fractured carbonate reservoirs. SPE Journal, 2016, 145(9):392-403.
[11] 程飞.缝洞型碳酸盐岩油藏储层类型动静态识别方法:以塔里木盆地奥陶系为例.岩性油气藏, 2017, 29(3):76-82. CHENG F. Integrated dynamic and static identification method of fractured-vuggy carbonate reservoirs:a case from the Ordovician in Tarim Basin. Lithologic Reservoirs, 2017, 29(3):76-82.
[12] EHILG-ECONOMIDES C A, JOSEPH J. A New test for determination of individual layer properties in a multilayered reservoir. SPE Journal, 1987, 2(3):261-383.
[13] TARIQ S M, RAMEY H J. Drawdown behavior of a well with storage and skin effect communicating with layers of different radii and other characteristics. SPE 7453, 1978.
[14] GOMES E, AMBASTHA A K. An Analytical pressure transient model for multilayered, composite reservoirs with pseudo-steady state formation crossflow. SPE 26049, 1993.
[15] 曾杨, 康晓东, 唐恩高, 等.三层油藏水驱后转聚驱的试井解释方法.岩性油气藏, 2018, 30(5):146-153. ZENG Y, KANG X D, TANG E G, et al. Well test analysis method for polymer flooding after water flooding in triple-layer Reservoir. Lithologic Reservoirs, 2018, 30(5):146-153.
[16] 史文洋, 姚约东, 程时清, 等.裂缝性低渗透碳酸盐岩储层酸压改造油井动态压力特征. 天然气地球科学, 2018, 29(4):586-596. SHI W Y, YAO Y D, CHENG S Q, et al. Transient pressure behavior of acid fracturing oil wells in fractured low permeability carbonate reservoir. Natural Gas Geoscience, 2018, 29(4):586-596.
[17] AL-HUSSAINY R, RAMEY JR H J, CRAWFORD P B. The flow of real gases through porous media. Journal of Petroleum Technology, 1966, 18(5):624-636.
[18] AGARWAl R G. Real gas pseudo time:a new function for pressure buildup analysis of MHF gas wells. SPE 8279, 1979.
[19] PENG Y, AYALA L F. A density diffusivity approach for the unsteady state analysis of natural gas reservoirs, Journal of Natural Gas Science and Engineering, 2012, 7(7):22-34.
[20] VAN-EVERDINGEN A F, HURST W. The application of the Laplace transformation to flow problems in reservoirs. Journal of Petroleum Technology, 1949, 1(12):305-324.
[21] STEHFEST H. Algorithm 368:Numerical inversion of Laplace transforms. Communications of the ACM, 1970, 13(1):47-49.
[22] 王鹏, 沈忠民, 何崇康, 等.川南地区须家河组天然气地球化学特征及成藏过程.岩性油气藏, 2017, 29(5):19-27. WANG P, SHEN Z M, HE C K, et al. Geochemical characteristics and accumulation process of natural gas of Xujiahe Formation in southern Sichuan Basin. Lithologic Reservoirs, 2017, 29(5):19-27.
[23] 韩波, 何治亮, 任娜娜, 等.四川盆地东缘龙王庙组碳酸盐岩储层特征及主控因素.岩性油气藏, 2018, 30(1):75-85. HAN B, HE Z L, REN N N, et al. Characteristics and main controlling factors of carbonate reservoirs of Longwangmiao Formation in eastern Sichuan Basin. Lithologic Reservoirs, 2018, 30(1):75-85.
[24] 胡向阳, 赵向原, 宿亚仙, 等.四川盆地龙门山前构造带中三叠统雷口坡组四段碳酸盐岩储层裂缝形成机理. 天然气工业, 2018, 38(11):15-25. HU X Y, ZHAO X Y, SU Y X, et al. Formation mechanism of fractures in the carbonate reservoir of the 4 th member of Middle Triassic Leikoupo Formation in Longmenshan piedmont, Sichuan Basin. Natural Gas Industry, 2018, 38(11):15-25.
[1] 龙 翼，刘树根，宋金民，孙 玮，林 彤，余永强. 川中东北部龙岗地区中三叠统雷四3亚段储层特征及控制因素研究[J]. 岩性油气藏, 2016, 28(6): 36-44.
[2] 刘持恒,胡作维,李 云,罗 文. 江油含增地区中三叠统雷口坡组—天井山组界线沉积微相分析[J]. 岩性油气藏, 2015, 27(1): 66-73.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] 杨秋莲, 李爱琴, 孙燕妮, 崔攀峰. 超低渗储层分类方法探讨[J]. 岩性油气藏, 2007, 19(4): 51 -56 .
[2] 张杰, 赵玉华. 鄂尔多斯盆地三叠系延长组地震层序地层研究[J]. 岩性油气藏, 2007, 19(4): 71 -74 .
[3] 杨占龙, 张正刚, 陈启林, 郭精义,沙雪梅, 刘文粟. 利用地震信息评价陆相盆地岩性圈闭的关键点分析[J]. 岩性油气藏, 2007, 19(4): 57 -63 .
[4] 朱小燕, 李爱琴, 段晓晨, 田随良, 刘美荣. 镇北油田延长组长3 油层组精细地层划分与对比[J]. 岩性油气藏, 2007, 19(4): 82 -86 .
[5] 方朝合, 王义凤, 郑德温, 葛稚新. 苏北盆地溱潼凹陷古近系烃源岩显微组分分析[J]. 岩性油气藏, 2007, 19(4): 87 -90 .
[6] 韩春元，赵贤正，金凤鸣，王权，李先平，王素卿. 二连盆地地层岩性油藏“多元控砂—四元成藏—主元富集”与勘探实践（IV）——勘探实践[J]. 岩性油气藏, 2008, 20(1): 15 -20 .
[7] 戴朝成，郑荣才，文华国，张小兵. 辽东湾盆地旅大地区古近系层序—岩相古地理编图[J]. 岩性油气藏, 2008, 20(1): 39 -46 .
[8] 尹艳树，张尚峰，尹太举. 钟市油田潜江组含盐层系高分辨率层序地层格架及砂体分布规律[J]. 岩性油气藏, 2008, 20(1): 53 -58 .
[9] 石雪峰，杜海峰. 姬塬地区长3—长4+5油层组沉积相研究[J]. 岩性油气藏, 2008, 20(1): 59 -63 .
[10] 严世邦，胡望水，李瑞升，关键，李涛，聂晓红. 准噶尔盆地红车断裂带同生逆冲断裂特征[J]. 岩性油气藏, 2008, 20(1): 64 -68 .

陇ICP备17006252号
版权所有© 2018 中国石油集团西北地质研究所有限公司《岩性油气藏》编辑部

地址：甘肃省兰州市城关区雁儿湾路535号(陇ICP备17006252号)    电话：0931-8686158;8686058;8686288    邮箱：yxyqc@petrochina.com.cn

甘公网安备 62010202002827号

本系统由北京玛格泰克科技发展有限公司设计开发