The Molecular Motion of Natural Gas in the Pore and Throat of Tight
Sand Rock

doi:10.11885/j.issn.1674-5086.2012.10.25.01

Abstract

Abstract:

As the pore and throat of tight sand rock are very thin and connection relation is especially complex，studying the molecular motion of natural gas is very important for gas reservoir exploitation. So we did many experimental tests and get some useful results which show that there are two kind of shapes for gas flow in tight sand rock. Under high reservoir pressure， the gas molecular mean free path is much smaller than the pore diameter so it is viscous flow and is good for gas production. Under low reservoir pressure，the gas molecular mean free path is close to or even bigger than the pore diameter，and it is diffusive flow and is bad for gas production. The gas in the vadose region can flow effectively only with enough energy. The energy is the kickoff pressure that make gas flow. The kickoff pressure is different in different position，and there is a function between the kickoff pressure and the vadose region. Two experimental methods have been used to test the function.

Key words: tight sandstone, gas formation, the molecular motion of gas, kickoff pressure

Hu Yong1，2, Xu Xuan1，2, Guo Changmin1，2, Yuan Quan3, Yang Xiaofang4. The Molecular Motion of Natural Gas in the Pore and Throat of Tight Sand Rock[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.10.25.01.

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References

[1] 李中超，李闽，蒋雨江. 确定低渗岩芯气体启动压力梯

度的一种新方法[J]. 西南石油大学学报：自然科学版，

2013，35（3）：105–110.

Li Zhongchao，Li Min，Jiang Yujiang. A new method

for determining gas threshold pressure gradients in lowpermeability

rock[J]. Journal of Southwest Petroleum

University：Science & Technology Edition，2013，35（3）：

105–110.

[2] 许建红，程林松，钱俪丹，等. 低渗透油藏启动压力梯

度新算法及应用[J]. 西南石油大学学报，2007，29（4）：

64–66，78.

Xu Jianhong，Cheng Linsong，Qian Lidan，et al. A new

method and the application on calculating start-up pressure

gradient in low permeable reservoirs[J]. Journal of

Southwest Petroleum University，2007，29（4）：64–66，

78.

[3] Kuuskraa V A，Ammer J. Tight gas sands development：

how to dramatically improve recovery efficiency[J]. Gas

TIPS，2004，10（1）：15–20.

[4] 杨琼，聂孟喜，宋付权. 低渗透砂岩渗流启动压力

梯度[J]. 清华大学学报：自然科学版，2004 ，44（12）：

1650–1652.

Yang Qiong，Nie Mengxi，Song Fuquan. Threshold pressure

gradient of low permeability sandstone[J]. Journal

of Tsinghua University：Science and Technology，2004 ，

44（12）：1650–1652.

[5] 吕成远，王建，孙志刚. 低渗透砂岩油藏渗流启动压

力梯度实验研究[J]. 石油勘探与开发，2002，29（2）：

86–89.

Lü Chengyuan，Wang Jian，Sun Zhigang. An experimental

study on starting pressure gradient of fluids flow in low

permeability sandstone porous media[J]. Petroleum Exploration

and Development，2002，29（2）：86–89.

[6] 陶军，姚军，范子菲，等. 一种确定低渗透油藏启动

压力梯度的新方法[J]. 新疆石油地质，2008，29（5）：

626–628.

Tao Jun，Yao Jun，Fan Zifei，et al. A new method for determination

of start-up pressure gradient in low permeability

reservoir[J]. Xinjiang Petroleum Geology，2008，29（5）：

626–628.

[7] 张代燕，彭军，谷艳玲，等. 稠油油藏启动压力梯度实

验[J]. 新疆石油地质，2012，33（2）：201–204.

Zhang Daiyan，Peng Jun，Gu Yanling，et al. Experimental

study on threshold pressure gradient of heavy oil

reservoir[J]. Xinjiang Petroleum Geology，2012，33（2）：

201–204.

[8] 李爱芬，刘敏，张化强，等. 低渗透油藏油水两相启动

压力梯度变化规律研究[J]. 西安石油大学学报：自然

科学版，2010，25（6）：47–50，54.

Li Aifen，Liu Min，Zhang Huaqiang，et al. Experimental

study on threshold pressure gradient of oil-water twophase

seepage in low permeability reservoirs[J]. Journal of

Xi′an Shiyou University：Natural Science Edition，2010，

25（6）：47–50，54.

[9] 温庆志，蒲春生. 启动压力梯度对压裂井生产动态

影响研究[J]. 西安石油大学学报：自然科学版，2009，

24（4）：50–53，64.

Wen Qingzhi，Pu Chunsheng. Effect of starting pres-

sure gradient on the production performance of fractured

wells[J]. Journal of Xi′an Shiyou University：Natural Science

Edition，2009，24（4）：50–53，64.

[10] 李传亮. 启动压力梯度真的存在吗?[J]. 石油学报，

2010，31（5）：867–870.

Li Chuanliang. Is a starting pressure gradient necessary

for flow in porous media?[J]. Acta Petrolei Sinica，2010，

31（5）：867–870.

[11] 杨飏，郭正权，黄锦绣，等. 鄂尔多斯盆地西南部延长

组过剩压力与油藏的关系[J]. 地球科学与环境学报，

2006，28（2）：49–52.

Yang Yang，Guo Zhengquan，Huang Jinxiu，et al.

Overpressure relation on oilfields in Yanchang Formation

SW Ordos Basin[J]. Journal of Earth Science and

Environment，2006，28（2）：49–52.

[12] 陈民锋，李晓风，赵梦盼，等. 启动压力影响下确

定油藏有效动用半径[J]. 断块油气田，2013，20（4）：

462–465.

Chen Minfeng，Li Xiaofeng，Zhao Mengpan，et al. Determination

of effective drainage radius for reservoirs considering

threshold pressure gradient[J]. Fault-Block Oil &

Gas Feild，2013，20（4）：462–465.

[13] 何英，杨正明，刘学伟，等. 低渗透油田考虑启动压力

梯度计算井网产量[J]. 西南石油大学学报：自然科学

版，2009，31（3）：163–166.

He Ying，Yang Zhengming，Liu Xuewei，et al. The productivity

calculation for well pattern of low permeability

reservoir considering threshold pressure gradient[J]. Journal

of Southwest Petroleum University：Science & Technology

Edition，2009，31（3）：163–166.

[14] 唐伏平，唐海，余贝贝，等. 存在启动压力梯度时的合

理注采井距确定[J]. 西南石油大学学报，2007，29（4）：

89–91.

Tang Fuping，Tang Hai，Yu Beibei，et al. The determination

of the injection-production well spacing with the consideration

of the start-up pressure gradient[J]. Journal of

Southwest Petroleum University，2007，29（4）：89–91.

[15] 胡勇. 气体渗流启动压力实验测试及应用[J]. 天然气工

业，2010，30（11）：48–50.

Hu Yong. Experimental test analysis of the threshold pressure

in tight sandstone gas flow：a case study of the Sulige

gas field[J]. Natural Gas Industry，2010，30（11）：48–50.

The Molecular Motion of Natural Gas in the Pore and Throat of Tight Sand Rock

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