CHARACTERISTICS AND CONTROLLING FACTORS OF SANDSTONE RESERVOIR OF DONGYING FORMATION IN SHENXIAN DEPRESSION, JIZHONG SUB-BASIN

SUN Xiangcan; YANG Chuansheng; YU Xinghe; LI Mei

doi:10.3724/SP.J.1140.2014.04127

2014 Vol. 34, No. 4

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SUN Xiangcan, YANG Chuansheng, YU Xinghe, LI Mei. CHARACTERISTICS AND CONTROLLING FACTORS OF SANDSTONE RESERVOIR OF DONGYING FORMATION IN SHENXIAN DEPRESSION, JIZHONG SUB-BASIN[J]. Marine Geology & Quaternary Geology, 2014, 34(4): 127-132. doi: 10.3724/SP.J.1140.2014.04127

Citation:

SUN Xiangcan, YANG Chuansheng, YU Xinghe, LI Mei. CHARACTERISTICS AND CONTROLLING FACTORS OF SANDSTONE RESERVOIR OF DONGYING FORMATION IN SHENXIAN DEPRESSION, JIZHONG SUB-BASIN[J]. Marine Geology & Quaternary Geology, 2014, 34(4): 127-132. doi: 10.3724/SP.J.1140.2014.04127

CHARACTERISTICS AND CONTROLLING FACTORS OF SANDSTONE RESERVOIR OF DONGYING FORMATION IN SHENXIAN DEPRESSION, JIZHONG SUB-BASIN

1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
2. Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China;
3. Qingdao Institute of Marine Geology, Qingdao 266071, China;
4. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
5. Shengli Vocational College of Shandong, Dongying 257097, China

Received Date: 27 July 2013

Revised Date: 13 October 2013

Abstract

Abstract

The sandstone reservoir of the Dongying Formation in the Shenxian Depression, Jizhong Sub-basin is primarily composed of feldspathic lithic sandstone and lithic sandstone of low maturity. This means that the deposits come from multiple provenances and are close to the provenances. According to the conventional core analysis data, thin sections and scanning electron microscopic (SEM) data, the main pore types of the reservoir include primary and secondary pores, of which the primary intergranular pores dominate. The porosity and permeability data in the study area shows that the reservoir mainly belongs to a kind of high-porosity and mid-permeability. According to the standard for reservoir evaluation in the Shenxian Depression, there are four types of reservoirs, and the reservoirs of Dongying Formation are mainly of type Ⅰand type Ⅱ. The Dongying Formation in the Shenxian Depression is mainly a braided stream facies, which is the key factor controlling the reservoirs sand types, distribution pattern and later stage diagenetic reconstruction. The properties of the reservoirs are controlled by both the processes of deposition and diagenesis. The reservoirs have undergone three types of diagenesis, i. e. mechanic compaction, cementation and dissolution, and the former two are the main factors controlling the pore evolution.
- sandstone /
- reservoir characteristics /
- controlling factors /
- Shenxian depression /
- Dongying Formation

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References

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