Characteristics and origins of the Chang-6 reservoir rocks with extra-low and super-low permeability in the NX area, Ordos Basin

HUANG Chunmei; ZHONG Hongli; YAN Fengping; JIANG Silin; BAI Erlin; ZHANG Fengqi; WU Fuli; LIU Wei

Sedimentary Geology and Tethyan Geology > 2019 > 39(4): 38-46.

HUANG Chunmei, ZHONG Hongli, YAN Fengping, JIANG Silin, BAI Erlin, ZHANG Fengqi, WU Fuli, LIU Wei. Characteristics and origins of the Chang-6 reservoir rocks with extra-low and super-low permeability in the NX area, Ordos Basin[J]. Sedimentary Geology and Tethyan Geology, 2019, 39(4): 38-46.

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Characteristics and origins of the Chang-6 reservoir rocks with extra-low and super-low permeability in the NX area, Ordos Basin

1. Nanniwan Oil Production Plant, Yanchang Oil Field Co., Ltd., Yan'an 716000, Shaanxi, China;
2. College of Geology and Environments, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China;
3. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, Shaanxi, China

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Received Date: August 06, 2019
Revised Date: September 25, 2019
Published Date: December 29, 2019

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Abstract

Abstract

According to the data of physical properties, cast thin section, SEM, X-ray diffraction analysis, mercury injection test, the present paper deals with the characteristics and origins of the Chang-6 reservoir rocks with extra-low and super-low permeability in the NX area, Ordos Basin. The Chang-6 sandstone reservoirs have low porosity, and extra-low and super-low permeability. The porosity types consist of residual intergranular pores and secondary solution openings. The pore throat types contain mesopore-fine throats and micropore-fine throats. The early diagenetic compaction and cementation are major influencing factors that lead to the formation of poor physical properties of the Chang-6 sandstone reservoirs. The porosity loss caused by mechanical compaction ranges from 45.9% to 65.6%, with an average of 56.5% of the total porosity, and that caused by cementation ranges from 21.8% to 46.4%, with an average of 28.3% of the total porosity. In the cements, clay minerals and carbonate minerals occur as main cements that may reduce the reservoir quality of the sandstones. The dissolution of feldspar, laumonite and lithoclasts may largely improve the physical properties of the Chang-6 sandstone reservoirs, including the increase of the porosity from 22.2% to 71.4%, with an average of 44.2% of present-day porosity. The Chang-6 sandstone reservoirs with extra-low and super-low permeability were developed during the latest Cretaceous, and from that time on, the physical properties cited above remain unchanged.
- low-permeability reservoir,
- diagenesis,
- origin,
- Yanchang Formation,
- Ordos basin

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References

[1]	武富礼,赵靖舟,闫世可,等. 陕北地区中生界石油补偿成藏规律研究[J]. 石油学报,2007,28(3):23-31
[2]	赵靖舟,曹青,白玉斌,等. 油气藏形成与分布:从连续到不连续——兼论油气藏概念及分类[J]. 石油学报,2016,37(2):145-159
[3]	赵靖舟,吴少波,武富礼. 论低渗透储层的分类与评价标准——以鄂尔多斯盆地为例[J]. 岩性油气藏,2007,19(3):28-31.
[4]	任大忠,孙卫,田辉,等. 鄂尔多斯盆地姬塬油田长6储层成岩作用特征及孔隙度演化研究[J]. 西北大学学报(自然科学版),2016,46(1):105-112.
[5]	冯旭,刘洛夫,窦文超,等. 鄂尔多斯盆地西南部长7和长6-3致密砂岩成岩作用与成岩相[J]. 成都理工大学学报(自然科学版),2016,43(4):476-486
[6]	张茜,孙卫,任大忠. 鄂尔多斯盆地华庆地区长63储层成藏期孔隙度定量演化及致密成因机理[J]. 地质与勘探,2017,53(4):0807-0817
[7]	黎盼,孙卫,杜堃,等. 致密砂岩储层不同成岩作用对孔隙度定量演化的影响:以鄂尔多斯盆地姬塬油田长6储层为例[J]. 现代地质,2018,32(3):527-536.
[8]	张凤奇,武富礼,蒙晓灵,等. 不同类型低渗透储层有效厚度物性下限及其差异性成因——以陕北斜坡中部S地区中生界为例[J]. 石油与天然气地质,2015,36(4):555-562.
[9]	罗静兰,刘小洪,林潼,等. 成岩作用与油气侵位对鄂尔多斯盆地延长组砂岩储层物性的影响[J]. 地质学报,2006,80(5):664-673.
[10]	李道品. 低渗透砂岩油田开发[M]. 北京:石油工业出版社,1997.
[11]	李道品. 低渗透油田高效开发决策论[M]. 北京:石油工业出版社,2003.
[12]	郭艳琴,冯娟萍,欧阳征健,等. 姚店油田北区长6油层组储层特征与分类评价[J]. 西安科技大学学报,2010,30(2):197-201.
[13]	张凤奇,武富礼,罗然昊,等. 子北油田赵家台地区长61和长4+52储层非均质性研究[J]. 油气地质与采收率,2011,18(6):42-45.
[14]	卢红霞,陈振林,高振峰,等. 碎屑岩储层成岩作用的影响因素[J]. 油气地质与采收率,2009,16(4):53-55.
[15]	高辉,孙卫,宋广寿,等. 鄂尔多斯盆地合水地区长8储层特低渗透成因分析与评价[J]. 地质科技情报,2008,27(5):71-76.
[16]	梁晓伟,高薇,王芳. 特低渗透储集层成岩作用及孔隙演化定量表征——以鄂尔多斯盆地姬源地质为例[J]. 新疆石油地质,2010,31(2):150-153.
[17]	张哨楠,丁晓琪. 鄂尔多斯盆地南部延长组致密砂岩储层特征及其成因[J]. 成都理工大学学报, 2010, 37(4):386-394.
[18]	李斌,孟自芳,李相博, 等. 靖安油田上三叠统长6储层成岩作用研究[J]. 沉积学报,2005,23(4):574-583.
[19]	王彩萍. 鄂尔多斯盆地直罗油田长6油层组成岩作用及孔隙演化研究[J]. 地球科学与环境学报, 2010, 32(2):161-165.
[20]	严云奎,于波,崔智林,等. 鄂尔多斯盆地甘谷驿油田长4+5储层砂岩成岩作用[J]. 兰州大学学报:自然科学版,2009,45(3):8-12.
[21]	陈瑞银,罗晓容,陈占坤,等. 鄂尔多斯盆地中生代地层剥蚀量估算及其地质意义[J]. 地质学报, 2006, 80(5):685-693.
[22]	王瑞飞,陈明强. 储层沉积-成岩过程中孔隙度参数演化的定量分析-以鄂尔多斯盆地沿25区块、庄40区块为例[J]. 地质学报,2007,81(10):1432-1437.
[23]	Beard D C, Weyl P K. Influence of Texture on Porosity and Permeability of Unconsolidated Sand[J]. AAPG Bulletin, 1973, 57(2):349-369.
[24]	杨晓萍,裘怿楠. 鄂尔多斯盆地上三叠统延长组浊沸石的形成机理、分布规律与油气关系[J]. 沉积学报,2002,20(4):628-632.
[25]	李克永,李文厚,陈全红,等. 鄂尔多斯盆地镰刀湾地区延长组浊沸石分布与油藏关系[J]. 兰州大学学报:自然科学版, 2010,46(6):23-27.
[26]	谢润成,周文,晏宁平,等. 致密低渗砂岩储层质量控制因素研究-以靖边气田盒8段为例[J]. 石油实验地质,2010,32(2):120-123.
[27]	郭德运,郭艳琴,李文厚,等. 富县探区上三叠统延长组成岩作用及孔隙结构特征[J]. 沉积学报, 2010, 28(2):264-272.
[28]	Houseknecht D W. Assessing the Relative Importance of Compaction Processes and Cementation to Reduction of Porosity in Sandstones[J]. AAPG Bulletin, 1987, 71(6):633-642.
[29]	朱宗良,李克永,李文厚,等. 鄂尔多斯盆地上三叠统延长组富油因素分析[J]. 地质科技情报,2010,29(3):75-78.
[30]	蒋凌志,顾家裕,郭彬程,等. 中国含油气盆地碎屑岩低渗透储层的特征及形成机理[J]. 沉积学报,2004,22(1):13-19.

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Characteristics and origins of the Chang-6 reservoir rocks with extra-low and super-low permeability in the NX area, Ordos Basin

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