鄂尔多斯盆地古隆起东北侧马五41储层膏模孔类型及充填过程分析
- 刘新社1,
- 漆亚玲1,
- 李树同2, ,
- 邓秀芹1,
- 王琪2,
- 张文选1,
- 牟炜卫2,3,
- 闫灿灿2,3,
- 李阳2,3
- 1. 中国石油长庆油田勘探开发研究院, 西安 710021;
- 2. 甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室, 兰州 730000;
- 3. 中国科学院大学, 北京 100049
基金项目:
低渗透油气田勘探开发国家工程实验室开放基金（2016GSKJ05-01），兰州油气资源研究中心“十三五”科技创新基金（135CCJJ20160510），中国科学院青年创新促进会人才项目（Y410ST1LST）
作者简介:
刘新社,男,1971年出生,博士,高级工程师,石油天然气地质综合研究,E-mail:lxs_cq@petrochina.com.cn
- 收稿日期:
2016-09-30
- 修回日期:
2017-01-22
- 刊出日期:
2017-12-10
摘要: 利用岩芯和薄片资料，通过薄片孔隙描述、铸体薄片图像分析等方法，在对研究区马五41储层孔隙类型划分的基础上，详细划分了膏模孔充填类型，并对其充填过程进行了阐述。研究结果表明，研究区马五41储层主要发育溶蚀孔（膏模孔和其他溶孔）、晶间孔、晶间溶孔、微裂缝4种类型的孔隙，且以膏模孔为主。通过镜下薄片对膏模孔内不同充填物观察发现，充填物主要为白云石、方解石、硬石膏，其中半充填的膏模孔中主要充填物为白云岩粉砂、白云岩粉砂+石英、白云岩粉砂+铁白云石3种类型，而全充填的膏模孔中主要充填物为白云岩粉砂+方解石、白云岩粉砂+石英+方解石、白云岩粉砂+硬石膏3种类型。综合分析认为膏模孔是含膏云岩中石膏等易溶晶体溶蚀后，晶体轮廓保留而形成的，首先裸露风化壳期先充填白云岩粉砂和深灰色方解石，其次深埋藏期充填自生石英、白色亮晶方解石、铁白云石及硬石膏。
Analysis on the Types and the Filling Process of the Anhydrite-model Pore of Ma541 in Northeast of the Palaeohigh, Ordos Basin
- LIU XinShe
1,
- QI YaLing
1,
- LI ShuTong
2, ,
- DENG XiuQin
1,
- WANG Qi
2,
- ZHANG WenXuan
1,
- MOU WeiWei
2,3,
- YAN CanCan
2,3,
- LI Yang
2,3
- 1. Exploration and Development Research Institute, PetroChina Changqing Oilfield Company, Xi'an 710021, China;
- 2. Key Laboratory of Petroleum Resources, Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China;
- 3. University of Chinese Academy of Sciences, Beijing 100049, China
Funds:
Open Foundation of Low Permeability Oil and Gas Field Exploration and Development National Engineering Laboratory, No. 2016GSKJ05-01;Science and Technology Foundation of Lanzhou Center for Oil and Gas Resources Research during the “13th Five-Year Plan” No.135CCJJ20160510, Youth Innovation Promotion Association CAS,No. Y410ST1LST
- Received Date:
2016-09-30
- Rev Recd Date:
2017-01-22
- Publish Date:
2017-12-10
Abstract: Using the data of cores and thin sections, based on the classification of Ma541 reservoir pore types in the study area and through the pore description of thin sections, the image analysis of casting thin sections and other methods, this paper gives a detailed classification of gypsum-model pore filling types and makes an elaboration of filling process. The study shows that Ma541 reservoir developed the following 4 pore types as dissolved pore (anhydrite-model pore and other solution pores), intercrystalline pore, intercrystalline solution pores and microcrack in the study area. According to the analysis to the carbon-oxygen isotopic characteristics of different fillings in the anhydrite-model pore, the fillings are mainly composed of dolomite, calcite and anhydrite, the fillings of partial filling anhydrite-model pore are mainly composed of dolomite silts, dolomite silts + quartz, dolomite silts + ankerite and the fillings of all filling anhydrite-model pore are mainly composed of dolomite silts + calcite, dolomite silts + quartz + calcite and dolomite silts + anhydrite. The comprehensive analysis reveals that the anhydrite-model pore is formed by the preservation of crystal outline after the dissolution of gypsum and other easily soluble crystals. Filling process in the anhydrite-model pore can be divided into the following several stages. Firstly, the anhydrite-model pore is filled with dolomite silts and dark-gray calcite in the naked weathering period. Then, the anhydrite-model pore is filled with authigenic quartz, white sparry calcite, ankerite and anhydrite.
刘新社, 漆亚玲, 李树同, 邓秀芹, 王琪, 张文选, 牟炜卫, 闫灿灿, 李阳. 鄂尔多斯盆地古隆起东北侧马五41储层膏模孔类型及充填过程分析[J]. 沉积学报, 2017, 35(6): 1217-1224. doi: 10.14027/j.cnki.cjxb.2017.06.013
| 引用本文: |
刘新社, 漆亚玲, 李树同, 邓秀芹, 王琪, 张文选, 牟炜卫, 闫灿灿, 李阳. 鄂尔多斯盆地古隆起东北侧马五41储层膏模孔类型及充填过程分析[J]. 沉积学报, 2017, 35(6): 1217-1224. doi: 10.14027/j.cnki.cjxb.2017.06.013
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LIU XinShe, QI YaLing, LI ShuTong, DENG XiuQin, WANG Qi, ZHANG WenXuan, MOU WeiWei, YAN CanCan, LI Yang. Analysis on the Types and the Filling Process of the Anhydrite-model Pore of Ma541 in Northeast of the Palaeohigh, Ordos Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1217-1224. doi: 10.14027/j.cnki.cjxb.2017.06.013
| Citation: |
LIU XinShe, QI YaLing, LI ShuTong, DENG XiuQin, WANG Qi, ZHANG WenXuan, MOU WeiWei, YAN CanCan, LI Yang. Analysis on the Types and the Filling Process of the Anhydrite-model Pore of Ma541 in Northeast of the Palaeohigh, Ordos Basin[J]. Acta Sedimentologica Sinica, 2017, 35(6): 1217-1224. doi: 10.14027/j.cnki.cjxb.2017.06.013
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