砾岩油藏聚合物驱水流优势通道特征及其对剩余油的影响

doi:10.3969/j.issn.1006-6535.2021.04.015

摘要/Abstract

摘要： 针对QD1油藏克下组砾岩油藏含水上升快、产液速度高的问题,运用Rdos软件栅状模拟和Eclipse化学驱模拟刻画聚合物驱不同阶段水流优势通道及其与剩余油分布关系。结果表明:QD1油藏克下组油藏水流优势通道可分为2种类型,在聚合物驱4个阶段中,前缘水驱阶段和回返递减期分别发育6条和17条Ⅰ类通道,集中于水平压裂缝和储层相对高渗带,见效高峰期和聚合物驱稳产期以近东西向的Ⅱ类通道为主;水流优势通道是控制克下组砾岩油藏剩余油分布的重要因素,研究区东部剩余油呈鸟足状、环岛状分布在水流优质通道间,随水驱波及范围扩大,剩余油缩小为团块状、点状,西部剩余油则呈带状、线状分布在断层附近。该研究为QD1油田水流优势通道封堵措施设计、改善砾岩油藏聚合物驱效果提供依据。

关键词: Rdos模拟, 聚合物驱, 砾岩油藏, 优势通道, QD1油藏

Abstract: To address the problem of high water cut increasing rate and high fluid production rate in the conglomerate reservoir of Kexia Formation of QD1 reservoir, grid simulation with Rdos software and Eclipse chemical flooding simulation were conducted to characterize the preferential migration conduit and its relationship with remaining oil distribution in different stages of polymer flooding. The results show that the preferential migration conduit in Kexia Formation of QD1 reservoir was divided into two types. In the four stages of polymer flooding, 6 and 17 Type I conduits were developed in the front water flooding stage and the return regression stage respectively, and were concentrated in horizontal fractures and the relative-high-permeability area of the reservoir; Type II conduits were mainly developed in the near east-west direction in the effective peak period and the stable production period of polymer flooding; preferential migration conduit was an important factor to control the distribution of remaining oil in conglomerate reservoir of Kexia Formation; the remaining oil in the east of the study area was distributed in preferential migration conduit in the shape of bird foot and island; with the expansion of water flooding range, the remaining oil was reduced into clumps and spots, while the remaining oil in the west was distributed in a strop or line shape near the fault. This study provides a basis for the design of plugging measures for preferential migration conduit in QD1 oilfield and the improvement of the polymer flooding effect in conglomerate reservoir.

Key words: Rdos simulation, polymer flooding, conglomerate reservoir, preferential migration conduit, QD1 reservoir

中图分类号:

TE349

白雷, 孙鹏超, 胡晓蝶, 万青山. 砾岩油藏聚合物驱水流优势通道特征及其对剩余油的影响[J]. 特种油气藏, 2021, 28(4): 108-115.

Bai Lei, Sun Pengchao, Hu Xiaodie, Wan Qingshan. Characteristics of Preferential Migration Pathway of Polymer Flooding in Conglomerate Reservoirs and Its Effects on Remaining Oil[J]. Special Oil & Gas Reservoirs, 2021, 28(4): 108-115.

参考文献

[1] 黄文彪,詹卓琛,逯瑞敬,等.致密油微观充注动态过程及控制因素[J].石油与天然气地质,2019,40(6):1197-1204.
HUANG Wenbiao,ZHAN Zhuochen,LU Ruijing,et al.Microscope dynamic process and controlling factors of oil charging in tight reservoir[J].Oil & Gas Geology,2019,40(6):1197-1204.
[2] 徐后伟,王海明,刘荣军,等.砾岩油藏聚合物驱储集层多参数精细评价及应用——以克拉玛依油田七东1区块克拉玛依组下亚段砾岩油藏为例[J].新疆石油地质,2018,39(2):169-175.
XU Houwei,WANG Haiming,LIU Rongjun,et al.Fine multiparameter evaluation for polymer flooding in conglomerate reservoirs and its application:a case study from Lower Karamay Formation in District Qidong-1,Karamay Oilfield[J].Xinjiang Petroleum Geology,2018,39(2):169-175.
[3] 郑宇霞,梁于文,苏爱琴.优势渗流通道评价技术在胡状集油田的应用[J].断块油气田,2008,15(4):63-65.
ZHENG Yuxia,LIANG Yuwen,SU Aiqin.Application of evaluation technique to the advantage percolating channel in Huzhuangji Oilfield[J].Fault Block Oil & Gas Field,2008,15(4):63-65.
[4] 丁乐芳,朱维耀,王鸣川.高含水油田大孔道参数计算新方法[J].油气地质与采收率,2013,20(5):92-95.
DING Lefang,ZHU Weiyao,WANG Mingchuan.A new method of calculating the big channel parameters in high water cut oilfield[J].Petroleum Geology and Recovery Efficiency,2013,20(5):92-95.
[5] 郝金克.利用无因次压力指数定性识别优势通道[J].特种油气藏,2014,21(4):123-125.
HAO Jinke.Qualitative identification of prevailing channel by dimensionless pressure index[J].Special Oil & Gas Reservoirs,2014,21(4):123-125.
[6] 孟凡顺,孙铁军,朱炎.利用常规测井资料识别砂岩储层大孔道方法研究[J].中国海洋大学学报,2007,37(3):463-468.
MENG Fanshun,SUN Tiejun,ZHU Yan.A study on the method to identify large pore paths using conventional well logging data in sandstone reservoirs[J].Journal of Ocean University of China,2007,37(3):463-468.
[7] 王详,夏竹君,张宏伟.利用注水剖面测井资料识别大孔道的方法研究[J].测井技术,2002,26(2):162-164.
WANG Xiang,XIA Zhujun,ZHANG Hongwei.Using injection profile log data to distinguish macropore formation[J].Well Logging Technology,2002,26(2):162-164.
[8] IZGEC Bulent,KABIR Shah.Identification and characterization of high-conductive layers in waterfloods[C].SPE123930,2011:113-119.
[9] ALBABERT F G,MODOT V.Stochastic models of reservoir heterogeneity:impact on connectivity and average permeabilites[C].SPE24893,1992:355-370.
[10] VARGAS J A,AL-GAOUD Abdulaziz,DATTA-GUPTA Akhil.I
dentification of high-permeability zones from dynamic data using streamline simulation and inverse modeling of geology[J].Journal of Petroleum Science and Engineering,2009,69(3):283-291.
[11] 胡书勇,张烈辉,罗建新,等.砂岩油藏大孔道的研究回顾与展望[J].特种油气藏,2006,13(6):10-14.
HU Shuyong,ZHANG Liehui,LUO Jianxin,et al.Study on large pore path in sandstone reservoirs-review and prospect[J].Special Oil & Gas Reservoirs,2006,13(6):10-14.
[12] 于九政,刘易非,唐长久.对储层大孔道识别方法的再认识与构想[J].油气地质与采收率,2009,16(3):34-37.
YU Jiuzheng,LIU Yifei,TANG Changjiu.Recognition and design on the identification methods of high capacity channel of reservoirs[J].Petroleum Geology and Recovery Efficiency,2009,16(3):34-37.
[13] 聂小斌,娄清香,吐尔逊·买尔当,等.砾岩油藏聚合物相对分子质量的选择方法——以七东1区块下克拉玛依组油藏为例[J].新疆石油地质,2010,31(1):100-101.
NIE Xiaobin,LOU Qingxiang,TUERXUN·Maierdang,et al.Sel
ection of relative molecular mass of polymers by polymer flooding process in conglomerate reservoir: an example from the Lower Karamay Formation Reservoir in east district 7(1)[J].Xinjiang Petroleum Geology,2010,31(1):100-101.
[14] 李学良,张奎华,林会喜,等.准噶尔盆地西北缘二叠系风城组储层发育特征及油气富集因素[J].特种油气藏,2019,26(1):37-44.
LI Xueliang,ZHANG Kuihua,LIN Huixi,et al.Reservoir characterization and hydrocarbon enrichment factors of the Permian Fengcheng Formation in the northwestern margin of Junggar Basin[J].Special Oil & Gas Reservoirs,2019,26(1):37-44.
[15] 吴晓慧,邓景夫,陈晓明,等.注采连通性计算及渗流通道的定量识别[J].特种油气藏,2019,26(3):114-118.
WU Xiaohui,DENG Jingfu,CHEN Xiaoming,et al.Calculation of injection-production connectivity and quantitative identification of flow channel[J].Special Oil & Gas Reservoirs,2019,26(3):114-118.
[16] 张树翠,孙可明.储层非均质性和各向异性对水力压裂裂纹扩展的影响[J].特种油气藏,2019,26(2):97-100.
ZHANG Shucui,SUN Keming.Hydraulic fracturing crack propagation under various reservoir heterogeneity and anisotropy[J].Special Oil & Gas Reservoirs,2019,26(2):97-100.
[17] 柏明星,张志超,梁健巍.中高渗透砂岩油田优势流场识别与调整[J].油气地质与采收率,2017,24(1):100-105.
BAI Mingxing,ZHANG Zhichao,LIANG Jianwei.Identification and adjustment of streamline field in middle-high permeability sandstone oilfield[J].Petroleum Geology and Recovery Efficiency,2017,24(1):100-105.
[18] 王欣然,刘斌,周凤军,等.不同韵律储层下聚合物驱对剩余油分布的影响——以渤海G油田反九点面积注采井网为例[J].油气地质与采收率,2019,26(5):112-119.
WANG Xinran,LIU Bin,ZHOU Fengjun,et al.Influence of polymer flooding on residual oil distribution in reservoirs with different sequences:a case study of inverted nine-spot well pattern in Bohai G Oilfield[J].Petroleum Geology and Recovery Efficiency,2019,26(5):112-119.
[19] 谷建伟,周梅,李志涛,等.基于数据挖掘的长短期记忆网络模型油井产量预测方法[J].特种油气藏,2019,26(2):77-81.
GU Jianwei,ZHOU Mei,LI Zhitao,et al.Oil well production forecast with long-short term memory network model based on data mining[J].Special Oil & Gas Reservoirs,2019,26(2):77-81.