修正岩石压缩系数的页岩气藏物质平衡方程及储量计算

doi:10.11743/ogg20130407

Abstract

Abstract: As shale gas reservoirs have different change pattern of porosity with conventional gas reservoirs and their effective stress tending to lower porosity and matrix shrinkage tending to enlarge porosity have coupling effect,these two factors must be considered comprehensively when establishing the material balance equation for shale gas reservoir.Based on the material balance principle,Bangham solid deformation theory and Langmuir isotherm adsorption model are used to establish shale gas reservoir material balance equation with correction rock compressibility.The equation is linearized to a straight line equation only containing original free gas and absorbed gas.Actual production data are substituted in the equation to obtain the data points of the linear equation.These data points are fitted to obtain a fitting equation,the slop of which is the content of free gas and theintercept is original absorption content of gas.The sum of these two is original geological reserves of shale gas reservoir.Case analysis shows that considering the matrix shrinkage effect makes compressibility factor decrease at the beginning and stablize at the later.The lowering of shale gas reservoir porosity caused by the change of compressibility factor is slower than that of conventional gas reservoir.The correction of the rock compressibility of shale gas reservoirs and linear fitting the actual production data lead to the increase of the calculated amount of absorbed gas and the decrease of estimated content of free gas,so the estimated geological reserves increase and are more close to actual reserves.

Key words: compressibility, porosity, material balance equation, reserve calculation, shale gas

CLC Number:

TE155

Liu Botao, Yin Hu, Wang Xinhai, Li Qingquan. Material balance equation with revised rock compressibility for shale gas reserve calculation[J]. Oil & Gas Geology, 2013, 34(4): 471-474.

References

[1] 张大伟.加快中国页岩气勘探开发和利用的主要路径[J].天然气工业,2011,31(5):1-5. Zhang Dawei.Main solution ways to speed up shale gas exploration and development in China[J].Natural Gas Industry,2011,31(5):1-5.
[2] 王鹏万,陈子炓,贺训云,等.桂中坳陷泥盆系页岩气成藏条件与有利区带评价[J].石油与天然气地质,2012,33(3):353-362. Wang Pengwan,Chen Ziliao,He Xunyun,et al.Shale gas accumulation conditions and play evaluation of the Devonian in Guizhong Depression[J].Oil ＆ Gas Geology,2012,33(3):353-362.
[3] 聂永生,冷济高,韩建辉,等.黔东南地区岑巩页岩气区块勘探潜力[J].石油与天然气地质,2013,34(2):274-280. Nie Yongsheng,Leng Jigao,Han Jianhui,et al.Exploration potential of shale gas in Cen'gong block,southeastern Guizhou province[J].Oil ＆ Gas Geology,2013,34(2):274-280.
[4] 聂海宽,张金川,包书景,等.四川盆地及其周缘上奥陶统—下志留统页岩气聚集条件[J].石油与天然气地质,2012,33(3): 335-344. Nie Haikuan,Zhang Jinchuan,Bao Shujing,et al.Shale gas accumulation conditions of the Upper Ordovician-Lower Silurian in Sichuan Basin and its periphery[J].Oil ＆ Gas Geology,2012,33(3):335-344.
[5] 张金川,徐波,聂海宽,等.中国页岩气资源勘探潜力[J].天然气工业,2008,28(6):136-140. Zhang Jinchuan,Xu Bo,Nie Haikuan,et al.Exploration potential of shale gas resources in China[J].Natural Gas Industry ,2008,28(6):136-140.
[6] 聂海宽,唐玄,边瑞康.页岩气成藏控制因素及中国南方页岩气发育有利区预测[J].石油学报,2009,30(4):484-491. Nie Haikuan,Tang Xuan,Bian Ruikang.Controlling factors for shale gas accumulation and prediction of potential development area in shale gas reservoir of South China[J].Acta Petrolei Sinica,2009,30(4):484-491.
[7] 胡文瑞,翟光明,李景明.中国非常规油气的潜力和发展[J].中国工程科学,2010,12(5):25-29. Hu Wenrui,Zhai Guangming,Li Jingming.Potential and development of unconventional hydrocarbon resources in China[J].Engineering Sciences,2010,12(5):25-29.
[8] 贾承造,郑明,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-135. Jia Chengzao,Zheng Ming,Zhang Yongfeng.Unconventional hydrocarbon resources in China and the prospect of exploration and deve-lopment[J].Petroleum Exploration and Development,2012,39(2):129-135.
[9] Petunin V V,Yin X,Tutuncu A N.Porosity and permeability changes in sandstones and carbonates under stress and their correlation to rock texture[J].SPE 147401,2011:1-14.
[10] Soeder D J.Porosity and permeability of eastern Devonian gas shale[J].SPE Formation Evaluation,1988,3(1):116-124.
[11] Lane H S,Lancaster D E,Watson A T.Estimating gas desorption parameters from Devonian shale well test data[J].SPE 21272,1990:113-124.
[12] Aguilera R.Flow units:from conventional to tight gas to shale gas reservoirs[J].SPE 132845,2013:1-16.
[13] Cheng Yueming.Pressure transient characteristics of hydraulically fractured horizontal shale gas wells[J].SPE 149311,2011:1-9.
[14] Lewis A M,Hughes R G.Production data analysis of shale gas reservoirs[J].SPE 116688,2008:67-72.
[15] King G R .Material balance techniques for coal seem and Devonian shale gas reservoirs with limited water influx[J].SPE Reservoir Engineering,1993,8(1):67-72.
[16] 薛成刚,曹文江,钟英,等.煤层气藏物质平衡方程式的推导及储量计算方法[J].天然气勘探与开发,2000,23 (4):44-48. Xue Chenggang,Cao Wenjiang,Zhong Ying,et al.Material Balance equation and reserve calculation method of coal-bed methane reservoir[J].Natural Gas Exploration & Development,2000,23 (4):44-48.
[17] 刘铁成,唐海,刘鹏超.裂缝性封闭页岩气藏物质平衡方程及储量计算方程[J].天然气勘探与开发,2011,34(2):27-30. Liu Tiecheng,Tang Hai,Liu Pengchao,et al.Material Balance equation and reserve calculation method of fractured and closed shale-gas reservoir[J].Natural Gas Exploration & Development,2011,34(2):27-30.
[18] 李治平,李智锋.页岩气纳米级孔隙渗流动态特征[J].天然气工业,2012,32(4):50-53. Li Zhiping,Li Zhifeng.Dynamic characteristics of the shale gas nanoscale pore seepage[J].Natural Gas Industry,2012,32(4):50-53.
[19] 谈慕华,黄蕴元.表面物理化学[M].北京:中国建筑工业出版社,1985:50-54. Tan Muhua,Huang Yunyuan.Surface physical and chemical[M].Beijing:Chian Building Industry Press,1985:50-54.
[20] Salman A M,Wattenbarger R A.Accounting for adsorbed gas in shale gas reservoirs[J].SPE 141085,2011:1-15.
[21] Seidle J S,Huitt L G.Experimental measurement of coal matrix shrinkage due to gas desorption and implications for cleat permeability increases[J].SPE 300100,1995:1-15. (编辑董立)

Material balance equation with revised rock compressibility for shale gas reserve calculation

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