An Analysis of the Causes of Chang 2 Low Resistivity in Middle-western Ordos Basin

doi:10.11885/j.issn.1674-5086.2015.06.11.01

Abstract

Abstract: The reservoir resistivity of the Chang 2 Oil Formation is too low to be identified in the midwestern Ordos Basin. The causes for the low resistivity are the basis for the analysis and identification of low-resistivity reservoirs. The study of the low resistivity of the Chang 2 Formation is therefore important. The relationships between each geological factor and the reservoir resistivity were analyzed in the study area to determine the main reasons for the low resistivity using the analysis of data from rock physics experiments and logging and oil test data. The results show that the low resistivity is mainly controlled by the highly irreducible water saturation, high salinity of the stratum water, and complex pore structure; however, it is not governed by the content of conductive minerals in the reservoir. Moreover, the clay mineral content and the small clastic grain size have a small effect on the reservoir resistivity.

Key words: midwestern Ordos Basin, Chang 2 Formation, causes of low resistivity, irreducible water saturation, stratum water salinity, pore structure

CLC Number:

TE121

CHEN Shijia, GAO Xingjun, YU Jian, MA Jie, HUANG Hai. An Analysis of the Causes of Chang 2 Low Resistivity in Middle-western Ordos Basin[J]. 西南石油大学学报(自然科学版), 2017, 39(2): 1-8.

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References

[1] 潘元林. 中国隐蔽油气藏[M]. 北京:地质出版社,1998.
[2] 李丕龙,庞雄奇. 隐蔽油气藏形成机理与勘探实践[M]. 北京:石油工业出版社,2004.
[3] 席胜利,刘新社,孟培龙. 鄂尔多斯盆地大气区的勘探实践与前瞻[J]. 天然气工业,2015,35(8):1-9. doi:10.3787/j.issn.1000-0976.2015.08.001 XI Shengli, LIU Xinshe, MENG Peilong. Exploration practices and prospect of Upper Paleozoic giant gas fields in the Ordos Basin[J]. Natural Gas Industry, 2015, 35(8):1-9. doi:10.3787/j.issn.1000-0976.2015.08.001
[4] 中国石油天然气集团公司油气勘探部. 渤海湾地区低电阻油气层测井技术与解释方法[M]. 北京:石油工业出版社,2000.
[5] VAJNAR E A, KIDWELL C M, HALEY R A. Surprising productivity from low-resistivity sands[C]//SPWLA 18th Annual Logging Symposium. Houston, Texas:Society of Petrophysicists and Well-Log Analysts, 1977.
[6] 中国石油勘探与生产公司. 低阻油气藏测井识别评价方法与技术[M]. 北京:石油工业出版社,2006.
[7] 何胜林,张海荣,陈嵘,等. 东方1-1气田低电阻率气层测井评价方法[J]. 天然气工业,2012,32(8):27-30. doi:10.3787/j.issn.1000-0976.2012.08.006 HE Shenglin, ZHANG Hairong, CHEN Rong, et al. Logging evaluation methods for low resistivity gas layers in the Dongfang 1-1 Gas Field, Yinggehai Basin[J]. Natural Gas Industry, 2012, 32(8):27-30. doi:10.3787/j.issn.-1000-0976.2012.08.006
[8] 王玉,王明锋,廖伟,等. 滴南凸起滴西12井区薄层低电阻率气层识别技术[J]. 新疆石油地质,2012,33(3):360-362. WANG Yu, WANG Mingfeng, LIAO Wei, et al. Technology for identification of thin and low-resistivity gas zone in Dixi-12 wellblock in Dinan Swell of eastern Luliang Uplift, Junggar Basin[J]. Xinjiang Petroleum Geology, 2012, 33(3):360-362.
[9] 陈世加,马力宁,张祥,等. 油气水层的地球化学识别方法[J]. 天然气工业,2001,21(6):39-41. doi:10.3321/j.issn:1000-0976.2001.06.012 CHEN Shijia, MA Lining, ZHANG Xiang, et al. Geochemical methods of identifying oil reservoir, gas reservoir and water layer[J]. Natural Gas Industry, 2001, 21(6):39-41. doi:10.3321/j.issn:1000-0976.2001.06.012
[10] 陈世加,黄第藩,赵孟军. 用储层岩石抽提物的饱和烃色谱指纹识别油气层[J]. 沉积学报,1998,16(4):149-152. doi:10.14027/j.cnki.cjxb.1998.04.026 CHEN Shijia, HUANG Difan, ZHAO Mengjun. Identifying oil and gas intervals using saturated hydrocarbon chromatography fingerprints of reservoir extracted hydrocarbon[J]. Acta Sedimentologica Sinica, 1998, 16(4):149-152. doi:10.14027/j.cnki.cjxb.1998.04.026
[11] 鱼文,谭成仟,张三. 鄂尔多斯盆地姬塬地区长2储层特征及油藏控制因素[J]. 重庆科技学院学报(自然科学版),2012,14(2):12-14,65. doi:10.3969/j.issn.1673-1980.2012.02.004 YU Wen, TAN Chengqian, ZHANG San. Reservoir characteristics and control factors of Chang 2 reservoir in Jiyuan Region of Ordos Basin[J]. Journal of Chongqing University of Science and Technology (Natural Sciences Edition), 2012, 14(2):12-14, 65. doi:10.3969/j.issn.1673-1980.2012.02.004
[12] 田建锋,刘池洋,梁晓伟. 鄂尔多斯盆地姬塬地区长2油层组石油富集规律及其差异性[J]. 现代地质, 2011,25(5):902-908. doi:10.3969/j.issn.1000-8527.-2011.05.010 TIAN Jianfeng, LIU Chiyang, LIANG Xiaowei. Oil enrichment laws and differentia of Chang 2 Formation in Jiyuan Area, Ordos Basin[J]. Geoscience, 2011, 25(5):902-908. doi:10.3969/j.issn.1000-8527.2011.05.010
[13] 何金先,闫金鹏,齐亚林,等. 姬塬地区延长组长2油藏油气成藏条件研究[J]. 岩性油气藏,2012,24(5):38-42. doi:10.3969/j.issn.1673-8926.2012.05.007 HE Jinxian, YAN Jinpeng, QI Yalin, et al. Hydrocarbon accumulation conditions of Chang 2 oil reservoir set in Jiyuan Area, Ordos Basin[J]. Lithologic Reservoirs, 2012, 24(5):38-42. doi:10.3969/j.issn.1673-8926.2012.05.007
[14] 赵虹,党犇,姚泾利,等. 鄂尔多斯盆地姬塬地区延长组长2低阻油层成因机理[J]. 石油实验地质, 2009,31(6):588-592. doi:10.3969/j.issn.1001-6112.-2009.06.008 ZHAO Hong, DANG Ben, YAO Jingli, et al. Forming mechanism of Chang 2 low resistivity oil layer, Yanchang Formation, Jiyuan Region, Ordos Basin[J]. Petroleum Geology & Experiment, 2009, 31(6):588-592. doi:10.3969/j.issn.1001-6112.2009.06.008
[15] 周丹,李红艳,古亮,等. 姬黄37# 区耿231井区长222低电阻油层储层特征及成因分析[J]. 石油化工应用,2010,29(8):60-62. doi:10.3969/j.issn.1673-5285.-2010.08.015 ZHOU Dan, LI Hongyan, GU Liang, et al. Reservoir characteristics and genesis analysis of Chang 222 low re-sistivity oil layer in Geng 231 well block in Jihuang 37# Region, Ordos Basin[J]. Petrochemical Industry Application, 2010, 29(8):60-62. doi:10.3969/j.issn.1673-5285.2010.08.015
[16] 杨双定,牟金东,朱春红,等. 鄂尔多斯盆地低电阻率油层的分类分析及评价[J]. 测井技术,2007,31(3):273-277. doi:10.3969/j.issn.1004-1338.2007.03.018 YANG Shuangding, MOU Jindong, ZHU Chunhong, et al. On classification and evaluation of low resistivity oil layer in Ordos Basin[J]. Well Logging Technology, 2007, 31(3):273-277. doi:10.3969/j.issn.1004-1338.2007.03.018
[17] 杨华,付金华,何海清,等. 鄂尔多斯华庆地区低渗透岩性大油区形成与分布[J]. 石油勘探与开发,2012, 39(6):641-648. YANG Hua, FU Jinhua, HE Haiqing, et al. Formation and distribution of large low-permeability lithologic oil regions in Huaqing, Ordos Basin[J]. Petroleum Exploration and Development, 2012, 39(6):641-648.
[18] 廖东良. 低阻环带的形成、识别与分析[J]. 西南石油大学学报(自然科学版),2014,36(1):39-44. doi:10.11885/j.issn.1674-5086.2012.07.04.01 LIAO Dongliang. Formation, recognition and analysis of low-resistivity annulus[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2014, 36(1):39-44. doi:10.11885/j.issn.1674-5086.2012.07.04.01
[19] 罗水亮,许辉群,刘洪,等. 柴达木盆地台南气田低阻气藏成因机理及测井评价[J]. 天然气工业,2014,34(7):41-45. doi:10.3787/j.issn.1000-0976.2014.07.007 LUO Shuiliang, XU Huiqun, LIU Hong, et al. Genetic mechanism and logging evaluation of low-resistivity gas reservoirs in the Tainan Gas Field, eastern Qaidam Basin[J]. Natural Gas Industry, 2014, 34(7):41-45. doi:10.3787/j.issn.1000-0976.2014.07.007
[20] 夏冬冬,司马立强,张庆红,等. 中东叙利亚A油田碳酸盐岩油藏低阻成因分析[J]. 西南石油大学学报(自然科学版),2014,36(5):81-89. doi:10.11885/j.issn.-1674-5086.2012.11.19.03 XIA Dongdong, SIMA Liqiang, ZHANG Qinghong, et al. Genesis of low resistivity limestone reservoirs in Oilfield A of Syria[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2014, 36(5):81-89. doi:10.11885/j.issn.1674-5086.2012.11.19.03
[21] 唐宇,译. 探测和分析黄铁矿对现代测井技术的影响[J]. 测井技术信息,2005,18(6):45-51,57. TANG Yu, Trans. Exploration and analysis of the effect of pyrite on modern well logging technology[J]. Well Logging Technology Information, 2005, 18(6):45-51, 57.
[22] VERWER K, EBERLI G P, WEGER R J. Effect of pore structure on electrical resistivity in carbonates[J]. AAPG Bulletin, 2011, 95(2):175-190. doi:10.1306/06301010047
[23] CEREPI A, DURAND C, BROSSE E. Pore microgeometry analysis in low-resistivity sandstone reservoirs[J]. Journal of Petroleum Science and Engineering, 2002, 35(3/4):205-232. doi:10.1016/S0920-4105(02)00244-9
[24] KHAIRY H, TN. HARITH Z Z. Influence of pore geometry, pressure and partial water saturation to electrical properties of reservoir rock:Measurement and model development[J]. Journal of Petroleum Science and Engineering, 2011, 78(3/4):687-704. doi:10.1016/j.petrol.2011.07.018
[25] 郝以岭,赵宇芳,周明顺,等. 基于测井资料计算孔渗比的储层评价方法[J]. 测井技术,2004,28(2):135-137. doi:10.3969/j.issn.1004-1338.2004.02.012 HAO Yiling, ZHAO Yufang, ZHOU Mingshun, et al. The reservoir evaluation method for calculating the ratio of porosity to permeability with log data[J]. Well Logging Technology, 2004, 28(2):135-137. doi:10.3969/j.issn.1004-1338.2004.02.012