scholarly journals The Low-Permeability Reservoir Properties of Lower Submember of Member 2 of Shahejie Formation in the Third Area of Shanghe Oilfield in Huimin Depression

2017 ◽  
Vol 39 (02) ◽  
pp. 1-9
Author(s):  
志军 杨
Keyword(s):  
Low Permeability ◽  
Reservoir Properties ◽  
Low Permeability Reservoir ◽  
The Third ◽  
Shahejie Formation ◽  
Huimin Depression

Control Factors of Chang 4+5 Reservoir Properties in Jiyuan Oilfield

2013 ◽  
Vol 734-737 ◽  
pp. 1171-1174
Author(s):  
Qi Zhou ◽  
Yan Yi Yin
Keyword(s):  
Sedimentary Facies ◽  
Low Permeability ◽  
Reservoir Properties ◽  
Delta Front ◽  
Factors Affecting ◽  
Low Permeability Reservoir ◽  
Fine Grained ◽  
Control Factors ◽  
Critical Technology ◽  
Storage Potential

Discovered in recent years, Chang 4+5 reservoir group of Yanchang Formation in Jiyuan area is ultra-low permeability reservoir. The evaluation and prediction of the reservoir is the most critical technology in reservoir development. Comprehensive analysis with multiple research approaches shows that the storage potential of the ultra-low permeability reservoir is jointly controlled by sedimentation and diagenesis. Sedimentary factor includes lithology and sedimentary facies, two basic factors affecting the storage potential. The reservoir lithology is of fine-grained debris-arkose and miliary arkose. Pore types are mainly intergranular pores and dissolved pores. The sandstone microfacies in the delta front underwater distributary channel has the best storage potential. Diagenetic factors, including diagenesis types, evolution, intensity, combination etc., have direct influence on the reservoir storage potential. Compaction and calcite cementation are the main factors that weaken the storage potential, whereas carbonate dissolution, especially the dissolution of feldspar plays an important role in the improvement of the storage potential.

Low Permeability Reservoir Quantitative Analysis of Diagenesis Evolution - Taking Xishanyao Reservoir in Niuquanhu Area as an Example

2015 ◽  
Vol 1092-1093 ◽  
pp. 1410-1415
Author(s):  
Yuan Kang ◽  
Wei Sun ◽  
Ting Shang ◽  
Jian Chao Shi ◽  
Jun Sheng
Keyword(s):  
Quantitative Analysis ◽  
Physical Property ◽  
Low Permeability ◽  
Reservoir Properties ◽  
Thin Sections ◽  
Low Permeability Reservoir ◽  
Quantitative Calculation ◽  
Pore Evolution ◽  
Calculation Results ◽  
The Impact

The Xishanyao reservoir in Niuquanhu area is a typical low permeability reservoir Diagenesis is very important for the physical property of reservoir. Through analyzed data of cast thin sections and scanning electron microscopy (SEM) data, analyzed the impact of main diagenesis on reservoir properties in Niuquanhu area. First, quantitative analyzed the various types of diagenesis on reservoir porosity contribution rate. Second, through restoring the original porosity, quantitative analyzed the pore evolution of reservoir caused by various types of diagenesis. Realized the quantitative analysis of porosity of each diagenesis stage. The quantitative calculation results agree well with the experimental analysis results, the error is 1.09%~1.51%, which showed the rationality of research method and the research results have certain reliability. The study of diagenesis has important significance for fine evaluation and favorable area prediction of Niuquanhu area reservoir.

Feasibility Analysis of Fractured-Horizontal Well Development in HuaQing Ultra-Low Permeability Reservoir

2013 ◽  
Vol 772 ◽  
pp. 755-760
Author(s):  
Shao Yuan Mo ◽  
Shun Li He ◽  
Shuai Wang ◽  
Hai Yong Zhang ◽  
Li Jing Chang ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Oil Field ◽  
Low Permeability ◽  
Geological Model ◽  
Reservoir Properties ◽  
Fracture Spacing ◽  
Low Permeability Reservoir ◽  
Horizontal Length ◽  
Fractured Horizontal Well ◽  
Half Length

Fractured-horizontal well can effectively reduce the percolation resistance near wellbore, improve the fluid mobility and enhance the production. However, in Chang 6 ultra-low permeability reservoir, BaiBao block, HuaQing oilfield, the efficiency of fractured-horizontal well is highly poor due to the production swiftly down and water cut sharply up. For studying the unsatisfying oil development by fractured-horizontal well in HuaQing oil field, the evaluation of reservoir properties and the option of stratum for fractured-horizontal well application have been performed based on the practical geological model of BaiBao block in HuaQing oil field. The numerical simulation is used to study the effect of reservoir permeability, Thickness and Aeolotropism on the production and to optimize the horizontal length, fracture spacing, half length and conductivity. The conclusion shows that Chang 63 stratum is qualified for fractured-horizontal well application. Through the practical geological model, the optimizations of horizontal length range, fracture spacing, half length and conductivity are 800m to 1200m, 77m, 150m, and 15μm2cm, respectively. The results can be conducted for fractured-horizontal well application in HuaQing oil field.

scholarly journals WATERFLOOD-INDUCED FRACTURE ON THE INJECTION WELLS IN LOW-PERMEABILITY RESERVOIR OF ACHIMOV SEQUENCE

2018 ◽  
pp. 39-43
Author(s):  
A. V. Klimov-Kayanidi ◽  
R. T. Alimkhanov ◽  
E. S. Agureeva ◽  
R. M. Sabitov
Keyword(s):  
Hydraulic Fracturing ◽  
Low Permeability ◽  
Reservoir Pressure ◽  
Reservoir Properties ◽  
Injection Wells ◽  
Field Development ◽  
Low Permeability Reservoir ◽  
Fracture Formation ◽  
Maintenance Systems

Achimov sequence is characterized by high heterogeneity and low reservoir properties, that makes it impossible economically profitable field development without hydraulic fracturing and usage reservoir pressure maintenance systems. The research aims to develop recommendations for regulating the operations of injection wells, in conditions of waterflood-induced fracture formation. The recommendations can be used to further regulate the waterflooding system for the conditions of Achimov sequence.

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