The Niobrara Gas Play: Exploration and Development of a Low-Pressure, Low-Permeability Gas Reservoir

1982 ◽  
Vol 34 (12) ◽  
pp. 2863-2870 ◽  
Author(s):  
C.A. Brown ◽  
J.W. Crafton ◽  
J.G. Golson
Keyword(s):  
Low Pressure ◽  
Low Permeability ◽  
Gas Reservoir ◽  
Exploration And Development

The Research on Rational Proration to Low Yield and Pressure Gas Well in Tight Gas Reservoir

2012 ◽  
Vol 524-527 ◽  
pp. 1647-1650
Author(s):  
Deng Sheng Lei ◽  
Zhi Lin Qi
Keyword(s):  
Low Pressure ◽  
Gas Production ◽  
Low Permeability ◽  
Tight Gas ◽  
Gas Wells ◽  
Liquid Loading ◽  
Gas Reservoir ◽  
Gas Well ◽  
Factors Influencing ◽  
Tight Gas Reservoir

The rational proration is the prerequisite condition of realizing the high gas production and steady production of gas reservoir. Especially to the tight gas reservoir, due to the very low permeability, there are many low yield and low pressure gas wells. Because low yield and low pressure, the gas well is easily effected by the liquid loading and the change of working system, which cause the degree of reserve recovery decrease, more seriously make the gas stop producing directly. Based on the seepage rule in tight gas reservoir and analyzing the every factors influencing the production of low yield and pressure gas well, the low yield and pressure gas well have been classified to several types. And the gas well yields of different type have been optimized.

The Current Situation and Prospects of Development of Low Permeability Oil Reservoir

2013 ◽  
Vol 734-737 ◽  
pp. 1286-1289 ◽  
Author(s):  
Lin Cong ◽  
Wen Long Li ◽  
Jing Chao Lei ◽  
Ru Bin Li
Keyword(s):  
Research Methods ◽  
Oil And Gas ◽  
Low Permeability ◽  
Oil Reservoir ◽  
Oil Exploration ◽  
Gas Field ◽  
Oil And Gas Field ◽  
Low Permeability Reservoirs ◽  
Technical Measures ◽  
Exploration And Development

Internationally the research of low permeability oil reservoir is a difficult point in the exploration and development of oil and gas field. This thesis, based on the research methods of low permeability reservoirs at home and abroad, summaries several major problems encountered in the process of low permeability oil exploration and development under the current technical conditions as well as the corresponding, but more effective technical measures that need to be constantly improved. And that exploration and development of low permeability of the reservoir will be the main battle field for some time in the future of oil exploration and development.

Underbalanced Coiled Tubing Drilling Practices in a Deep, Low-Pressure Gas Reservoir

2005 ◽  
Author(s):  
Tom Kavanagh ◽  
Randal Pruitt ◽  
Mike Reynolds ◽  
Richard Ortiz ◽  
Matt Shotenski ◽  
...  
Keyword(s):  
Low Pressure ◽  
Gas Reservoir ◽  
Coiled Tubing

The Research of Gas-Water Relations in Low-Permeability Tight Sand Gas Reservoir - Taking Zizhou Gas Field for Example

2013 ◽  
Vol 734-737 ◽  
pp. 480-483
Author(s):  
Jun Bao Ma ◽  
Yu Long Ma ◽  
Chao Sun ◽  
Jian Guo Wang
Keyword(s):  
Water Relations ◽  
Water Distribution ◽  
Low Permeability ◽  
Distribution Law ◽  
Deep Basin ◽  
Gas Reservoir ◽  
Gas Field ◽  
Structural Position ◽  
Single Well ◽  
Tight Sand Gas

The gas-water relations of low-permeability tight sand gas reservoir are complex and not necessarily linked to the structural relief, phenomenon that water is distributed in high structural position while gas in low structural position is common what makes it difficult to make a refined description of gas-water relations and distribution low. The article takes Zizhou gas field for example, establishes 4 gas-water relations modes of single well to analyze some profiles where there is abnormal phenomenon water up gas down, the fact is that water and gas are distributed in different sand bodies and Zizhou Gas Field is not a deep basin gas reservoir. The research shows the phenomenon that water up gas down does not exist, the gas-water relations are normal. The research results have certain significance for the determination of gas-water distribution law.

scholarly journals Applicability Analysis of Klinkenberg Slip Theory in the Measurement of Tight Core Permeability

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2351 ◽  
Author(s):  
Jirui Zou ◽  
Xiangan Yue ◽  
Weiqing An ◽  
Jun Gu ◽  
Liqi Wang
Keyword(s):  
High Pressure ◽  
Gas Permeability ◽  
Fluid Dynamic ◽  
Dynamic Parameter ◽  
Low Pressure ◽  
Low Permeability ◽  
Apparent Permeability ◽  
Tight Reservoir ◽  
Gas Seepage ◽  
The Relationship

The Klinkenberg slippage theory has widely been used to obtain gas permeability in low-permeability porous media. However, recent research shows that there is a deviation from the Klinkenberg slippage theory for tight reservoir cores under low-pressure conditions. In this research, a new experimental device was designed to carry out the steady-state gas permeability test with high pressure and low flowrate. The results show that, unlike regular low-permeability cores, the permeability of tight cores is not a constant value, but a variate related to a fluid-dynamic parameter (flowrate). Under high-pressure conditions, the relationship between flowrate and apparent permeability of cores with low permeability is consistent with Klinkenberg slippage theory, while the relationship between flowrate and apparent permeability of tight cores is contrary to Klinkenberg slip theory. The apparent permeability of tight core increases with increasing flowrate under high-pressure conditions, and it is significantly lower than the Klinkenberg permeability predicted by Klinkenberg slippage theory. The difference gets larger when the flowrate becomes lower (back pressure increases and pressure difference decreases). Therefore, the Klinkenberg permeability which is obtained by the Klinkenberg slippage theory by using low-pressure experimental data will cause significant overestimation of the actual gas seepage capacity in the tight reservoir. In order to evaluate the gas seepage capacity in a tight reservoir precisely, it is necessary to test the permeability of the tight cores directly at high pressure and low flowrate.

Calculation Methods of the Dynamic Reserves for Gas Wells in a Low-Permeability Gas Reservoir

2013 ◽  
Vol 295-298 ◽  
pp. 3243-3248
Author(s):  
Lei Zhang ◽  
Lai Bing Zhang ◽  
Jun Jie Zhang ◽  
Feng Lan ◽  
Pan Deng
Keyword(s):  
Pressure Drop ◽  
Material Balance ◽  
Production Method ◽  
Gas Production ◽  
Phase Method ◽  
Low Permeability ◽  
Gas Reservoir ◽  
Two Phase ◽  
Material Balance Method ◽  
Unit Pressure

Accurately calculating dynamic reserves for single well in a low-permeability gas reservoir has an important guiding significance to high efficiency development of the gas reservoir. During the development of the gas reservoir, dynamic analysis methods were often used to calculate dynamic reserves. Dynamic analysis methods mainly include the material balance method, the gas production method in unit pressure drop, the flexible two-phase method and the production unstable method. Dynamic reserves for four types of gas wells in a low-permeability gas field were calculated using these four methods. Calculation results show that dynamic reserves from big to small are respectively obtained using material balance method, gas production method in unit pressure drop, flexible two-phase method and production unstable method. Calculating dynamic reserves obtained by flexible two-phase method and production unstable method are utilized to production dynamic data of gas well, and those obtained by material balance method and gas production method in unit pressure drop are utilized to the reservoir parameters of different state. Therefore, the values of dynamic reserves obtained using flexible two-phase method and production unstable method in the low-permeability gas reservoir may be more accurate than those obtained using the other methods.

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