| 孔雀河地区土什布拉克组砂岩成岩作用及其对孔隙演化的影响 |
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| 引用本文： | 高有峰,刘万洙,王璞珺,白雪峰.孔雀河地区土什布拉克组砂岩成岩作用及其对孔隙演化的影响[J].新疆地质,2006,24(4):381-383,I0015. |
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| 作者姓名： | 高有峰 刘万洙 王璞珺 白雪峰 |
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| 作者单位： | 吉林大学地球科学学院,吉林,长春,130061 |
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| 摘 要： | 新疆塔里木盆地孔雀河地区下志留统土什布拉克组砂岩,主要为长石岩屑砂岩和岩屑砂岩.压实作用和胶结作用对砂岩孔隙的减小起决定性影响,溶解作用和重结晶作用使成岩期后的孔隙空间有所增加.根据岩性特征和成岩作用强度及表现,把研究区的土什布拉克组划分为三段,下段压实作用强烈,只发育溶解作用形成的部分颗粒内溶孔,平均面孔率7.6%;中段以胶结作用为主,仅见后期溶解作用形成的胶结物溶孔,平均面孔率10.5%;上段溶解和重结晶作用发育而压实作用不明显,产生较多次生孔隙,为储层物性最好的层段,平均面孔率13.3%.
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| 关 键 词： | 塔里木盆地 孔雀河地区 下志留统 成岩作用 孔隙演化 |
| 文章编号： | 1000-8845（2006）04-381-03 |
| 收稿时间： | 06 27 2006 12:00AM |
| 修稿时间： | 2006-06-272006-09-30 |
DIAGENESIS OF SANDSTONE IN TUSHIBULAKE FORMATION AND ITS INFLUENCE ON PORE EVOLUTION, KONGQUEHE REGION |
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| GAO You-feng,LIU Wan-zhu,WANG Pu-jun,BAI Xue-feng.DIAGENESIS OF SANDSTONE IN TUSHIBULAKE FORMATION AND ITS INFLUENCE ON PORE EVOLUTION, KONGQUEHE REGION[J].Xinjiang Geology,2006,24(4):381-383,I0015. |
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| Authors: | GAO You-feng LIU Wan-zhu WANG Pu-jun BAI Xue-feng |
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| Institution: | College of Earth Sciences, Jilin University, Changchun Jilin, ,130061, China |
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| Abstract: | The main sandstone types in Tushibulake Formation of Lower Siluric are feldspathic lithic sandstone and lithic sandstone in Kongquehe region of Xinjiang.The mechanical compaction and cementation are the main factors causing the loss of porosity for the sandstones,while the dissolution and recrystallization improve the properties in the later diagenetic stage.According to the lithologic characteristics and the diagenesis,we divide the sandstone of Tushibulake into three members.The below member suffered compaction strongly and a small part of intragranular solution pores were developed with the average area percent of pore of 7.6% which resulted from dissolution.Cementation is primary in the middle member.Solution pore in the cement could be found,resulted from dissolution in the later period and its average area percent of pore is 10.5%.The upper member is the best reservoir for the well-developed secondary pores with the average area percent of pore of 13.3%,resulted from the dominating dissolution and recrystallization as well as weak compaction. |
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| Keywords: | Tarim Basin Kongquehe region Lower Silurian diagenesis pore evolution |
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