Influence of chlorite film on reservoir porosity:A case study from the second member of Yanchang Formation in Ordos Basin

  • TAO Bie ,
  • FU Heng
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  • 1. The Faculty of Resources, China University of Geosciences, Wuhan 430074, China; 2. Hainan Oil & Gas Exploration Branch Company, Liaohe Oilfield Company, PetroChina, Panjin 124010, China

Online published: 2008-12-15

Abstract

Chlorite film developed well in the reservoir sandstone in the second member of Triassic Yanchang Formation in Ordos Basin. According to the regional geologic information and core slice observation, it is concluded that chlorite film formed in the early diagenetic stage, and the porosity increased with the increasing of chlorite film content. So chlorite film takes a constructive diagenesis on the reservoir porosity in this area. This effect is manifested mainly in three aspects: repressing the quartz overgrowth, enhancing the mechanical strength of rocks and resistance to compaction, and repressing the pressure solution by occupying the space of carbonate cement.

Cite this article

TAO Bie , FU Heng . Influence of chlorite film on reservoir porosity:A case study from the second member of Yanchang Formation in Ordos Basin[J]. Lithologic Reservoirs, 2008 , 20(4) : 71 -74 . DOI: 10.3969/j.issn.1673-8926.2008.04.013

References

[1] 李红,柳益群,刘林玉.鄂尔多斯盆地延长组长81低渗透储层成岩作用[J].石油与天然气地质,2006,27(2):209-217.
[2] 史基安,王金鹏,毛明陆,等.鄂尔多斯盆地西峰油田三叠系延长组长6—8 段储层成岩作用的研究[J].沉积学报,2003,21(3):373-379.
[3] 姜红霞,吴亚生,罗晓荣,等.鄂尔多斯盆地中南部三叠系延长组8 油层组成岩作用及其对储层物性的控制[J].沉积与特提斯地质,2007,27(1):54-61.
[4] 禚喜准,王琪,史基安,等.鄂尔多斯盆地盐池—姬塬地区三叠系长2 砂岩成岩特征及优质储层分布[J].矿物岩石,2005,25(4):98-106.
[5] 王琪,史基安,王多云,等.鄂尔多斯盆地西部三叠系长2 油层组砂岩成岩演化特征[J].天然气地球科学,2005,16(3):261-268.
[6] 王琪,禚喜准,陈国俊,等.鄂尔多斯盆地盐池—姬塬地区三叠系长4+5 砂岩成岩特征及优质储层分布[J].沉积学报,2005,23(3):397-405.
[7] 王琪,禚喜准,陈国俊,等.鄂尔多斯西部长6 砂岩成岩演化及优质储层[J].石油学报,2005,26(5):27-23.
[8] 高振东.鄂尔多斯盆地下寺湾地区三叠系延长组油气富集规律[J].陕西地质,2007,25(1):38-44.
[9] 黄思静,谢连文,张萌,等.中国三叠系陆相砂岩中自生绿泥石的形成机制及其与储层孔隙保存的关系[J].成都理工大学学报(自然科学版),2004,31(3):273-281.
[10] 黄思静,黄培培,王庆东,等.胶结作用在深埋藏砂岩孔隙保存中的意义[J].岩性油气藏,2007,19(3):7-13.
[11] Salman B,Lander R H,Bonnellc L. Anomalously high porosity and permeability in deeply buried sandstone reservoirs:Origin and predictability[J]. AAPG Bulletin,2002,86(2):301-328.
[12] Billault V,Beaufort D,Baronnet A,et al. A nanopetrographic and textural study of grain-coating chlorites in sandstone reservoirs[J].Clay Minerals,2003,38(3):315-328.
[13] 钟广法,林社卿,侯方浩.泌阳凹陷核三下亚段砂岩成岩作用及储集性[J].矿物岩石,1996,16(2):40-46.
[14] Aagaard P, Jahren J S, Harstad A O, et al. Formation of graincoating chlorite in sandstones. Laboratory synthesized vs. natural occurrences[J]. Clay Minerals,2000,35(1):261-269.
[15] 邹明亮,黄思静,胡作维,等.西湖凹陷平湖组砂岩中碳酸盐胶结物形成机制及其对储层质量的影响[J].岩性油气藏,2008,20(1):47-52.
[16] 陈荣书.石油及天然气地质学[M].武汉:中国地质大学出版社,1994.
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