Potentials of low permeability gas in intracratonic basin: Insights from sedimentary facies of the Shan1 Member in the Su6-Zhao42 Block of the Sulige gas field, Ordos Basin

2017 ◽  
Vol 53 ◽  
pp. 201-211 ◽  
Author(s):  
Yifei Wang ◽  
Huaishan Liu ◽  
Sanzhong Li ◽  
Ke Zhang ◽  
Yuanyuan Wang
Keyword(s):  
Ordos Basin ◽  
Sedimentary Facies ◽  
Low Permeability ◽  
Gas Field ◽  
Intracratonic Basin

Logging Identification Technology of Sedimentary Facies and Gas Layers within Low Pressure, Low Permeability and Low Abundance Gas Reservoirs: Example from SQW Block of the Sulige Gas Field, Ordos Basin, China

2012 ◽  
Vol 616-618 ◽  
pp. 96-99
Author(s):  
Fang Lu ◽  
Xin Jiang Du ◽  
Zhi Jun Mao ◽  
Yan Zhou ◽  
Yue Bin Cui ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Sedimentary Facies ◽  
Low Pressure ◽  
Low Permeability ◽  
Braided River ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Exploration Target ◽  
The Ordos Basin ◽  
Gas Potential

Sulige Gas Field is located in the Suligemiao area, northwest of the Ordos Basin, with a prospecting area of about 4×104km2. Owing to the strong heterogeneity in the SQW Block, one of exploration blocks in the Sulige Gas Field, remains reservoir characteristics of the gas field: lithologic gas reservoirs with characteristics of “three low” (low pressure, low permeability and low abundance). The He8 member of the Shihezi formation, the major exploration target, is deposited in braided river environment. The conventional logging data is very useful to indentify different facies and to estimate gas potential. The technology of discrimination with sedimentary facies and gas layers using logging data is established in this paper. We use the technology combining with AVO and other exploration methods to pick out 4 favorable exploration target areas with the success rate of more than 80%.

The Reservoir Plane Heterogeneity Characteristics of the Number 2 of the Shanxi Formation in Changbei Gas Field, Ordos Basin, China

2012 ◽  
Vol 524-527 ◽  
pp. 81-84
Author(s):  
Qin Lian Wei ◽  
Ling Xiao
Keyword(s):  
Ordos Basin ◽  
Composite Index ◽  
Sedimentary Facies ◽  
Entropy Method ◽  
Tight Sandstone ◽  
Gas Reservoir ◽  
Gas Field ◽  
Reservoir Heterogeneity ◽  
Well Trajectory ◽  
Comprehensive Level

Reservoir plane heterogeneity means the geometry，the scale，the continuity and the plan variation of physical properties of reservoirs, which is one of the main factors influencing the injection-production in oil reservoirs. Therefore, the study of the reservoir plane heterogeneity play a great role in guiding development wells deployment，gas reservoir well nets adjustment and residual oil & gas development. The reservoir heterogeneity of the sandstone size of gas and the border, and unbalanced formation pressure because of the degree of the development of each well is uneven prevent ChangBei gas field to develoment. They cause difficulty of evaluating the gas field comprehensive，level development wells deployment and well trajectory adjustment，and lead to certain geology risk. It is necessary to study the reservoir heterogeneity of the number 2 of shanxi Formation in this block for concerning the unfavourable extraction condition. The composite index of reservoir plane heterogeneity of the number 2 of shanxi Formation in ChangBei gas field have calculated by adopting entropy method considering influcing reservoir plane heterogeneity which is porosity, tight sandstone, mutation coefficient and variation coefficient of permeability, range of permeability and interlayer frequency. The distributive maps of reservoir's plane heterogeneity under the restriction of sedimentary facies have also been drawed. The entropy method can full use of the reduction and strengthen of entropy method,which means the characteristic of removing the similarities and depositing differences. The study indicate that reservoir plane heterogeneity of the number 2 of shanxi Formation in study area presents the medium to slightly strong characteristics in general.

Detailed sedimentary facies of a sandstone reservoir in the eastern zone of the Sulige gas field, Ordos Basin

2010 ◽  
Vol 20 (6) ◽  
pp. 891-903 ◽  
Author(s):  
Yijun LI ◽  
Yong ZHAO ◽  
Renchao YANG ◽  
Aiping FAN ◽  
Fuping LI
Keyword(s):  
Ordos Basin ◽  
Sedimentary Facies ◽  
Gas Field ◽  
Eastern Zone ◽  
Sandstone Reservoir

The influence of diagenesis on low-porosity, low-permeability gas reservoirs in the Sulige Gas Field (Ordos Basin, China)

2022 ◽  
pp. 191-215
Author(s):  
Xiuping Wang ◽  
Aiping Fan ◽  
A.J. (Tom) van Loon ◽  
Renchao Yang ◽  
Zuozhen Han ◽  
...  
Keyword(s):  
Ordos Basin ◽  
Low Permeability ◽  
Gas Reservoirs ◽  
Gas Field ◽  
Low Porosity

scholarly journals Natural Gas Reservoir Characteristics and Non-Darcy Flow in Low-Permeability Sandstone Reservoir of Sulige Gas Field, Ordos Basin

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1774
Author(s):  
Xiaoying Lin ◽  
Jianhui Zeng ◽  
Jian Wang ◽  
Meixin Huang
Keyword(s):  
Driving Force ◽  
Water Distribution ◽  
Ordos Basin ◽  
Darcy Flow ◽  
Low Permeability ◽  
Threshold Pressure ◽  
Gas Migration ◽  
Gas Reservoir ◽  
Gas Field ◽  
Gas Saturation

In order to reveal the gas–water distribution and formation mechanism of the low-permeability sandstone gas reservoir, the gas reservoir distribution and the formation mechanism in a low-permeability sandstone gas reservoir are investigated using data obtained from a physical simulation experiment of gas percolation. The exploration and experimenting for petroleum in the upper Paleozoic gas pool of the Sulige gas field in the Ordos basin in this paper. Results showed that the gas reservoir is characterized by low gas saturation, a complex distribution relationship of gas–water, and weak gas–water gravity differentiation. The characteristics of gas distribution are closely related to permeability, gas flow, and migration force. The capillary pressure difference is the main driving force of gas accumulation. There exists a threshold pressure gradient as gas flows in low-permeability sandstone. The lower that permeability, the greater the threshold pressure gradient. When the driving force cannot overcome the threshold pressure (minimal resistance), the main means of gas migration is diffusion; when the driving force is between minimal and maximal resistance, gas migrates with non-Darcy flow; when the driving force is greater than maximal resistance, gas migrates with Darcy flow. The complex gas migration way leads to complicated gas- water distribution relationship. With the same driving force, gas saturation increases with the improvement of permeability, thus when permeability is greater than 0.15 × 10−3 µ m2, gas saturation could be greater than 50%.

The Rough Gas Storage Field, Blocks 47/3d, 47/8b, UK North Sea

1991 ◽  
Vol 14 (1) ◽  
pp. 477-484 ◽  
Author(s):  
I. A. Stuart
Keyword(s):  
North Sea ◽  
Sedimentary Facies ◽  
Gas Storage ◽  
Small Scale ◽  
Low Permeability ◽  
Gas Field ◽  
Reservoir Flow ◽  
Unconformity Surface ◽  
The Vertical Distribution ◽  
New Facilities

AbstractThe Rough Gas Field is operated by British Gas as the world's first offshore gas storage reservoir. This relatively small field (original reserves 366 BCF) is located on the western margin of the Southern North Sea Basin. The reservoir, the Rotliegendes Gp (Leman Sandstone Fm.) average thickness 95 ft, is developed in a basin-margin facies association in which aeolian and wadi-related fluvial processes have interacted. Small-scale dune and interdune sandstones, with generally excellent permeability, alternate with wadi facies sandstones with variable but mainly poorer permeability. The vertical distribution of these facies permits a three-fold zonation of the reservoir. Flow profiles obtained from Production Logging Tools show a very strong correspondence between sedimentary facies and productivity/injectivity. The Carboniferous subcrop includes several very low-permeability sandstone intervals which contact the Rotliegendes at the angular Base Rotliegendes unconformity. A small amount of gas from these sandstones seeps across the unconformity surface into the Rotliegendes. The Rough Field was discovered by Gulf in 1968, and was operated by Amoco on a conventional depletion basis with 6 development wells from 1975 until the early 1980s. In 1980 British Gas secured 100% ownership of the Field and its facilities, and converted it to storage mode. Excess summer supplies are injected into the reservoir, to be produced during the winter to meet the peak demand. Conversion to storage mode has necessitated the installation of substantial new facilities, and the drilling of 23 further wells. First injection of gas was achieved in 1985.

Sign in / Sign up

Export Citation Format

Share Document