Citation: | MENG Wei, ZHONG Jian-hua, WANG Jia-wei. THE CHARACTERISTICS AND AFFECTING FACTORS OF GLUTENITE RESERVOIRS IN NORTHERN YONGXIN AREA OF DONGYING SAG[J]. Journal of Geomechanics, 2009, 15(3): 305-314. |
The Dongying sag is located in southeastern part of the Jiyang Depression. A study has been made on main rock types, type of reservoir space, physical characteristics and affecting factors of the glutenite reservoirs in northern Yongxin area in the Dongying sag based on core observation, thin section analysis, physical property analysis, scanning electron microscopy. The results show that the glutenites are of a low compositional maturity and textural maturity, and the reservoir spaces are intergranular corroded hollow, moldic pore and cementing corroded hollow. The dominant factors affecting physical characteristics of the reservoirs include burying depth, diagenism and sedimentary facies, of which the burying depth serves as a fundamental factor affecting physical properties of the reservoirs.
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Map showing present structural features of Dongying sag
Vertical evolution and distribution of the pores in different areas in northern Yongxin
Relationship between depth and porosity of No.4 Member of Shahejie Formation in Well Yong 921-25
Relationship between permeability and depth of No.4 Member of Shahejie Formation in Well Yong 921-30
Diagenesis and pore evolution of glutenite in northern area of Dongying sag