Lithologic Reservoirs ›› 2013, Vol. 25 ›› Issue (2): 19-25.doi: 10.3969/j.issn.1673-8926.2013.02.003

Previous Articles     Next Articles

Reservoir characteristics of N22 and N21 in Yingdong Oilfield, Qaidam Basin

HUANG Yeqiu1， SONG Guangyong2，WANG Bo3， LI Senming2， WANG Yanqing2， HUANG Geping2   

  1. 1. Department of Exploration， PetroChina Qinghai Oilfield Company， Dunhuang 736202， China； 2. PetroChina Hangzhou Research Institute of Geology， Hangzhou 310023，China； 3. Research Institute of Exploration and Development， PetroChina Qinghai Oilfield Company， Dunhuang 736202， China
  • Online:2013-04-20 Published:2013-04-20

PDF (PC)

848

Abstract:

The sandstone reservoirs of N22 and N21 in Yingdong Oilfield are characterized by much and thin layers and fine-grained,which play an important part on hydrocarbon distribution. Based on core, thin section, scanning electron microscope, mercury penetration and X-ray diffraction, reservoir characteristics and main controlling factors of N22 and N21 sandstones in Yingdong Oilfield were systematically studied. The result shows that: ①N22 and N21 sandstones are lithic arkose, mainly of fine-grained sandstone and siltstone, with medium compositional maturity and high textural maturity. Matrix content is low, and as the main type of cement, calcite content is moderate. Diagenesis of the sandstone reservoir is weak. ②the main reservoir space is primary intergranular pore, followed by dissolved pores and intragranular crack. Pore structure of reservoir includes three major types: medium pore and throat, large pore and medium throat, large pore and coarse throat. ③High quality reservoir in the study area is attributed to shallow burial condition. Microfacies, sandstone texture and cement content are key factors to distinguish good porosity and permeability sandstone. Compaction is the main factor for porosity-losing processes, and calcite cementation comes next. ④the reservoir in Yingdong Oilfield can be subdivided into four classes,and class Ⅰ, Ⅱ and Ⅲ are commercial, while Class Ⅳ is noncommercial and requiring improvements. It is suggested that while there is sandstone there is reservoir, and the key of exploration is searching sedimentary facies of high quality.

Key words: sedimentary system, reservoir characteristics, favorable range zone distribution, Lower-Middle Triassic, Beisantai swell, Junggar Basin

［1］ 李元奎，奎万仓，铁成文，等．柴达木盆地英东地区地质综合评价及勘探目标优选［J］．地球学报，2012，33（1）：57-64．
［2］ 李兰斌，孙丽娜，孙家振，等．柴西南地区断裂特征分析［J］．石油地球物理勘探，2010，45（3）：443-447．
［3］ 于福生，王彦华，李学良，等．柴达木盆地狮子沟—油砂山构造带变形特征及成因模拟［J］．大地构造与成矿学，2011，35（2）：207-215．
［4］ 李兰斌，孙家振，夏晓燕，等．柴达木盆地西南地区褶皱构造样式［J］．石油实验地质，2012，34（1）：30-35．
［5］ 朱如凯，邹才能，白斌，等．全球油气勘探研究进展及对沉积储层研究的需求［J］．地球科学进展，2011，26（11）：1150-1161．
［6］ 于兴河．油气储层地质学基础［M］．北京：石油工业出版社，2009：168-180．
［7］ 杨宝星，林仲虔．松辽盆地北部下白垩统下部含浊沸石砂岩的成岩作用［J］．石油与天然气地质，1991，12（1）：1-11．
［8］ 卢文忠，朱国华，李大成，等．川中地区侏罗系下沙溪庙组浊沸石砂岩储层的发现及意义［J］．中国石油勘探，2004，9（5）：53-58．
［9］ 杨晓萍，张宝民，雷振宇，等．含油气盆地中浊沸石的形成与分布及其对油气勘探的意义［J］．中国石油勘探，2006，11（2）：33-38．
［10］ 李乐，牟中海，汪立群，等．柴达木盆地昆北油田切6 区E1+2碎屑岩储层特征及其控制因素［J］．岩性油气藏，2011，23（4）：75-80．
［11］ 郭沫贞，朱国华，寿建峰，等．碎屑岩压裂缝的特征、成因与油气勘探意义［J］．沉积学报，2006，24（4）：483-487．
［12］ 张绍槐，罗平亚．保护储集层技术［M］．北京：石油工业出版社，1993：188-190．
［13］ 寿建峰，张惠良，斯春松，等．砂岩动力成岩作用［M］．北京：石油工业出版社，2005：65-68．
［14］ 陈志勇，苏爱国，等．柴达木盆地西部石油的形成［M］．北京：地质出版社，2006：12-13．
［15］ 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．
［16］ 曾溅辉，彭继林，邱楠生，等．砂-泥岩界面碳酸盐溶解-沉淀反应及其石油地质意义［J］．天然气地球科学，2006，17（6）：760-764．
[1] LI Daoqing, CHEN Yongbo, YANG Dong, LI Xiao, SU Hang, ZHOU Junfeng, QIU Tingcong, SHI Xiaoqian. Intelligent comprehensive prediction technology of coalbed methane “sweet spot”reservoir of Jurassic Xishanyao Formation in Baijiahai uplift，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 23-35.
[2] Guan Yunwen, Su Siyu, Pu Renhai, Wang Qichao, Yan Sujie, Zhang Zhongpei, Chen Shuo, Liang Dongge. Palaeozoic gas reservoir-forming conditions and main controlling factors in Xunyi area，southern Ordos Basin [J]. Lithologic Reservoirs, 2024, 36(6): 77-88.
[3] BAI Yubin, LI Mengyao, ZHU Tao, ZHAO Jingzhou, REN Haijiao, WU Weitao, WU Heyuan. Geochemical characteristics of source rocks and evaluation of shale oil “sweet spot”of Permian Fengcheng Formation in Mahu Sag [J]. Lithologic Reservoirs, 2024, 36(6): 110-121.
[4] QIAO Tong, LIU Chenglin, YANG Haibo, WANG Yifeng, LI Jian, TIAN Jixian, HAN Yang, ZHANG Jingkun. Characteristics and genetic mechanism of condensate oil and gas of the Jurassic Sangonghe Formation in western well Pen-1 sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 169-180.
[5] YU Qixiang, LUO Yu, DUAN Tiejun, LI Yong, SONG Zaichao, WEI Qingliang. Reservoir forming conditions and exploration prospect of Jurassic coalbed methane encircling Dongdaohaizi sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(6): 45-55.
[6] YANG Haibo, FENG Dehao, YANG Xiaoyi, GUO Wenjian, HAN Yang, SU Jiajia, YANG Huang, LIU Chenglin. Characteristics of source rocks and thermal evolution simulation of Permian Pingdiquan Formation in Dongdaohaizi Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(5): 156-166.
[7] WEI Chenglin, ZHANG Fengqi, JIANG Qingchun, LU Xuesong, LIU Gang, WEI Yanzhao, LI Shubo, JIANG Wenlong. Formation mechanism and evolution characteristics of overpressure in deep Permian in eastern Fukang Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(5): 167-177.
[8] SHEN Youyi, WANG Kaifeng, TANG Shuheng, ZHANG Songhang, XI Zhaodong, YANG Xiaodong. Geological modeling and“sweet spot”prediction of Permian coal measures shale reservoirs in Yushe-Wuxiang block，Qinshui Basin [J]. Lithologic Reservoirs, 2024, 36(4): 98-108.
[9] BIAN Baoli, LIU Hailei, JIANG Wenlong, WANG Xueyong, DING Xiujian. Discovery and exploration enlightenment of Carboniferous volcanic condensate gas reservoirs in western well Pen-1 sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(3): 96-105.
[10] WANG Jinduo, ZENG Zhiping, XU Bingbing, LI Chao, LIU Dezhi, FAN Jie, LI Songtao, ZHANG Zengbao. Fluid phase and hydrocarbon reservoir types of Permian Upper Urho Formation in Shawan Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(1): 23-31.
[11] WANG Tianhai, XU Duonian, WU Tao, GUAN Xin, XIE Zaibo, TAO Huifei. Sedimentary facies distribution characteristics and sedimentary model of Triassic Baikouquan Formation in Shawan Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(1): 98-110.
[12] YIN Lu, XU Duonian, YUE Xingfu, QI Wen, ZHANG Jijuan. Reservoir characteristics and hydrocarbon accumulation rules of Triassic Baikouquan Formation in Mahu Sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(1): 59-68.
[13] LI Erting, MI Julei, ZHANG Yu, PAN Yueyang, DILIDAER Rouzi, WANG Haijing, GAO Xiuwei. Source rock characteristics of Permian Pingdiquan Formation in Dongdaohaizi sag，Junggar Basin [J]. Lithologic Reservoirs, 2024, 36(1): 88-97.
[14] YANG Zhaochen, LU Yingbo, YANG Guo, HUANG Chun, YI Dalin, JIA Song, WU Yongbin, WANG Guiqing. Pre-CO2 energy storage fracturing technology in horizontal wells for medium-deep heavy oil [J]. Lithologic Reservoirs, 2024, 36(1): 178-184.
[15] LIU Guoyong, XU Duonian, HU Tingting, PAN Shuxin, PAN Tuo, WANG Guodong, MA Yongping, GUAN Xin. Discovery and petroleum geological significance of beach sand bodies of Jurassic Badaowan Formation in Shawan Sag，Junggar Basin [J]. Lithologic Reservoirs, 2023, 35(5): 1-10.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] HUANG Sijing,HUANG Peipei,WANG Qingdong,LIU Haonian,WU Meng,ZOU Mingliang. The significance of cementation in porosity preservation in deep-buried sandstones[J]. Lithologic Reservoirs, 2007, 19(3): 7 -13 .
[2] LIU Zhen,CHEN Yanpeng,ZHAO Yang,HAO Qi,XU Xiaoming,CHANG Mai. Distribution and controlling factors of hydrocarbon reservoirs in continental fault basins[J]. Lithologic Reservoirs, 2007, 19(2): 121 -127 .
[3] DING Chao，GUO Lan，YAN Jifu. Forming conditions of Chang 6 reservoir in Anding area of Zichang Oilfield[J]. Lithologic Reservoirs, 2009, 21(1): 46 -50 .
[4] LI Yanshan，ZHANG Zhansong，ZHANG Chaomo，CHEN Peng. Application of mercury injection data to Chang 6 reservoir classification in Changqing area[J]. Lithologic Reservoirs, 2009, 21(2): 91 -93 .
[5] LUO Peng,LI Guorong,SHI Zejin,ZHOU Dazhi,TANG Hongwei,ZHANG Deming. Analysis of sequence stratigraphy and sedimentary facies of M aokou Formation in southeastern Sichuan[J]. Lithologic Reservoirs, 2010, 22(2): 74 -78 .
[6] ZUO Guoping， TU Xiaolong， XIA Jiufeng. Study on volcanic reservoir types in Subei exploration area[J]. Lithologic Reservoirs, 2012, 24(2): 37 -41 .
[7] WANG Feiyu. Method to improve producing degree of thermal recovery horizontal wells and its application[J]. Lithologic Reservoirs, 2010, 22(Z1): 100 -103 .
[8] YUAN Yunfeng，CAI Ye，FAN Zuochun，JIANG Yiyang，QIN Qirong， JIANG Qingping. Fracture characteristics of Carboniferous volcanic reservoirs in Hongche fault belt of Junggar Basin[J]. Lithologic Reservoirs, 2011, 23(1): 47 -51 .
[9] YUAN Jianying， FU Suotang， CAO Zhenglin， YAN Cunfeng，ZHANG Shuichang， MA Dade. Multi-source hydrocarbon generation and accumulation of plateau multiple petroleum system in Qaidam Basin[J]. Lithologic Reservoirs, 2011, 23(3): 7 -14 .
[10] GENG Yanfei， ZHANG Chunsheng， HAN Xiaofeng， YANG Dachao. Study on formation mechanism of low resistivity gas bearing reservoir in Anyue-Hechuan area[J]. Lithologic Reservoirs, 2011, 23(3): 70 -74 .
TRENDMD:

Copyright © 2018 Lithologic Reservoirs

Support by Beijing Magtech support@magtech.com.cn