|
|
Mine Engineering 2024
基于多相流的致密气藏水平井产量分析方法
|
Abstract:
由于一些致密气藏的含水饱和度较高，气井产水现象在开发过程中较为常见。为了将产量分析方法应用气水两相流的致密气藏缝网压裂水平井生产数据分析，提出了基于气井的生产数据判别气井产水类型的方法，分析了致密气藏缝网压裂水平井的渗流特征，改进了纯气井产量分析方法使其适用于产水气井的产量分析。结果表明：通过分析气井的生产水气比和水化学特征能有效判别气井的产液类型和对开发的影响；致密气藏缝网压裂水平井的渗流特征不同与常规的三线性模型，压裂改造区存在三种连续渗流介质(基质、微裂缝、主压裂缝)；基于单相气流的产量分析方法在分析产水气井时，由于忽略了渗流通道中的地层水，导致拟合的渗透率偏小，EUR偏大。可见，气水两相流的致密气藏缝网压裂水平井产量分析方法适用于产水气井生产数据分析。
In tight sandstone gas reservoirs with high water saturation, water production from gas wells is common during development. In order to analyze the production characteristics of horizontal wells after water production through fracture pattern fracturing, a set of methods for distinguishing the type of water production in gas wells was proposed. Based on the analysis of seepage characteristics of horizontal wells with fracture pattern fracturing in tight sandstone gas reservoirs, the production analysis method for pure gas wells is improved to make it suitable for production analysis of water producing gas wells. The example analysis results show that: By analyzing the production water gas ratio and hydrochemical characteristics of a gas well, the water production type of the gas well can be effectively identified; In the fracturing and reconstruction area of a horizontal well with fracture pattern fracturing in tight sandstone gas reservoirs, there are three continuous seepage media (matrix, microfracture, and main pressure fracture), which conform to the percolation characteristics of a trilinear model; When using traditional production analysis methods to analyze water producing gas wells, the matching permeability is relatively small and the dynamic reserves are relatively large due to ignoring the seepage of the water phase. It is concluded that the production analysis method for fractured horizontal wells in tight sandstone gas reservoirs with gas water two-phase flow is suitable for production data analysis of water producing gas wells.
| [1] | 邹才能, 李熙喆, 朱如凯, 等. GB/T 30501-2014 致密砂岩气地质评价方法[S]. 北京: 中国标准出版社, 2014. |
| [2] | 张杰. 致密砂岩气藏孔隙水产出机理与主控因素研究[D]: [博士学位论文]. 北京: 中国科学院大学, 2021. |
| [3] | 田冷, 何顺利, 刘胜军, 等. 广安地区须家河组气藏气水分布特征[J]. 天然气工业, 2009, 29(6): 23-26, 135-136. |
| [4] | 张杰, 李熙喆, 高树生, 等. 致密砂岩气藏产水机理及其对渗流能力的影响[J]. 天然气地球科学, 2019, 30(10): 1519-1530. |
| [5] | 孙贺东. 油气井现代产量递减分析方法及应用[M]. 北京: 石油工业出版社, 2013. |
| [6] | Blasingame, T.A., Johnston, J.L. and Lee, W.J. (1993) Type-Curve Analysis Using the Pressure Integral Method. SPE 18799. |
| [7] | Blasingame, T.A., Ilk, D., Amini, S. and Hosseinpour-Zonoozi, N. (2007) Application of the β-Derivative Function to Production Analysis. Rocky Mountain Oil & Gas Technology Symposium, Denver, 16-18 April 2007, Paper Number: SPE-107967-MS. https://doi.org/10.2523/107967-MS |
| [8] | 李奇. 致密砂岩气藏采收率影响机理研究[D]: [博士学位论文]. 北京: 中国科学院研究生院, 2015. |
| [9] | 叶礼友. 川中须家河组低渗砂岩气藏渗流机及储层评价研究[D]: [博士学位论文]. 北京: 中国科学院研究生院, 2011. |
| [10] | 唐颖, 张金川, 张琴, 等. 页岩气井水力压裂技术及其应用分析[J]. 天然气工业, 2010, 30(10): 33-38. |
| [11] | 欧阳伟平, 孙贺东, 韩红旭. 致密气藏水平井多段体积压裂复杂裂缝网络试井解释新模型[J]. 天然气工业, 2020, 40(3): 74-81. |
| [12] | El-Banbia, H. (1998) Analysis of Tight Gas Well Performance. Master’s Thesis, Texas A & M University, Texas. |
| [13] | Bello, R.O. (2009) Rate Transient Analysis in Shale Gas Reservoirs with Transient Linear Behavior. Master’s Thesis, Texas A & M University, Texas. |
| [14] | Moghadam, S., Mattar, L. and Pooladi-Darvish, M. (2010) Dual Porosity Typecurves for Shale Gas Reservoirs. Canadian Unconventional Resources and International Petroleum Conference, Calgary, 19-21 October 2010, 1575-1587. https://doi.org/10.2118/137535-MS |
| [15] | Brohi, I., Pooladi-Darvish, M. and Aguilera, R. (2011) Modeling Fractured Horizontal Wells as Dual Porosity Composite Reservoirs—Application to Tight Gas, Shale Gas and Tight Oil Cases. SPE Western North American Region Meeting, Anchorage, 7-11 May 2011, 1-22. https://doi.org/10.2118/144057-MS |
| [16] | Kurtoglu, B., Salman, A. and Kazemi, H. (2015) Production Forecasting Using Flow Back Data. SPE Middle East Unconventional Resources Conference and Exhibition, Muscat, 26-28 January 2015, 1-27. https://doi.org/10.2118/172922-MS |
| [17] | 王旭. 川西须二气藏产水气井动态特征及开采对策[J]. 中外能源, 2018, 23(5): 49-56. |
| [18] | 叶礼友, 高树生, 杨洪志, 等. 致密砂岩气藏产水机理与开发对策[J]. 天然气工业, 2015, 35(2): 41-46. |
| [19] | Kamal, M.M. and Six, J.L. (1993) Pressure Transient Testing of Methane Producing Coalbeds. SPE Advanced Technology Series, 1, 195-230. https://doi.org/10.2118/19789-PA |
| [20] | Al-Hussainyr, R. and Ramey, H.J. (1966) Application of Real Gas Flow Theory to Well Testing and Deliverability Forecasting. Journal of Petroleum Technology, 18, 637-642. https://doi.org/10.2118/1243-B-PA |
| [21] | King, G.R. (1990) Material Balance Techniques for Coal Seam and Devonian Shale Gas Reservoirs. SPE Annual Technical Conference and Exhibition, New Orleans, 23-26 September 1990, 181-192. https://doi.org/10.2523/20730-MS |
| [22] | 吕栋梁, 唐海, 吕渐江, 等. 气井产水时产能方程的确定[J]. 岩性油气藏, 2010, 22(4): 112-115. |
