Gambling型曲线在某气田中的应用研究
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摘要
如今,先进的下降曲线分析技术被广泛应用于估算最初的碳氢化合物(HCⅡP)、油藏参数和产量预测。这些分析技术在假设不同的储层模型和井眼几何形状基础上开发的,其中大多数被认为是理想单井储层系统,这与实际情况不符。故有学者提出分析多井油藏生产数据的理论解决方案,应用油藏模拟模型对油气藏进行研究和验证,但对实际应用情况的应用没有详细论述。介绍了Blasingame型曲线法在多井凝析气藏中的应用实例。使用两相压缩系数计算总物质平衡拟时间。利用垂直流动相关性计算井底流动压力,并用动态梯度进行调整。分析单井产量数据以估算凝析气藏的原始气体总量以及储层参数。多井型方法的结果与常规物质平衡估计以及试井解释结果相当。因此证实了多井型曲线评价凝析气藏的可靠性。
Nowadays, advanced descent curve analysis techniques are widely used to estimate initial hydrocarbons(HCⅡP), reservoir parameters and production forecasts. These analytical techniques were developed based on the assumption of different reservoir models and wellbore geometries, most of which were considered to be ideal single well reservoir systems, which was inconsistent with the actual situation. Therefore, some scholars have proposed theoretical solutions for analyzing production data of multi-well reservoirs. The reservoir was studied and verified by the reservoir simulation model, but the actual application was not discussed in detail. In this paper, the application of Blasingame-type curve method in multi-well condensate gas reservoirs was introduced. The total material balance time was calculated using the two-phase compression factor. The bottom hole flowing pressure was calculated using the vertical flow correlation and adjusted with the dynamic gradient. Single well production data were analyzed to estimate the total amount of raw gas in the condensate reservoir and reservoir parameters. The results of the multi-well method were consistent with the volume and conventional material balance estimates and well test interpretation results. Therefore, the reliability of the multi-well curve to evaluate the condensate gas reservoir was confirmed.
Nowadays, advanced descent curve analysis techniques are widely used to estimate initial hydrocarbons(HCⅡP), reservoir parameters and production forecasts. These analytical techniques were developed based on the assumption of different reservoir models and wellbore geometries, most of which were considered to be ideal single well reservoir systems, which was inconsistent with the actual situation. Therefore, some scholars have proposed theoretical solutions for analyzing production data of multi-well reservoirs. The reservoir was studied and verified by the reservoir simulation model, but the actual application was not discussed in detail. In this paper, the application of Blasingame-type curve method in multi-well condensate gas reservoirs was introduced. The total material balance time was calculated using the two-phase compression factor. The bottom hole flowing pressure was calculated using the vertical flow correlation and adjusted with the dynamic gradient. Single well production data were analyzed to estimate the total amount of raw gas in the condensate reservoir and reservoir parameters. The results of the multi-well method were consistent with the volume and conventional material balance estimates and well test interpretation results. Therefore, the reliability of the multi-well curve to evaluate the condensate gas reservoir was confirmed.
引文
[1]Blasingame T A, Lee W J. Variable-Rate Reservoir Limits Testing[J].Journal of Petroleum Technology, 1986(6):352-358.
[2]Marhaendrajana T, Blasingame T A. Decline Curve Analysis Using Type Curves-Evaluation of Well Performance Behavior in a Multiwell Reservoir System[J]. Society of Petroleum Engineers, 2001(9):186-194.
[3]Sureshjani M H, Behmanesh H, Clarkson C R. Multi-Well Gas Reservoirs Production Data Analysis[C].SPE Unconventional Resources Conference-Canada. 2013(12):230-234.
[4]Shahamat M S, Clarkson C R. Multiwell, Multiphase Flowing Material Balance[C].SPE Unconventional Resources Conference. 2017(2):149-154.
[5]Fetkovich M J. Decline Curve Analysis Using Type Curves[J]. Journal of Petroleum Technology, 1980, 32(6):1065-1077.
[6]Carter R D. Type Curves for Finite Radial and Linear Gas-Flow Systems:Constant-Terminal-Pressure Case[J]. Society of Petroleum Engineers Journal, 1985, 25(5):719-728.
[7]Arabloo M, Gerami S. A new approach for analysis of production data from constant production rate wells in gas condensate reservoirs[J].Journal of Natural Gas Science&Engineering, 2014(21):725-731.
[8]Cox S, Sutton R, Blasingame T. Errors Introduced by Multiphase Flow Correlations on Production Analysis[J]. Journal of Petroleum Technology,2006(5):132-138.
[2]Marhaendrajana T, Blasingame T A. Decline Curve Analysis Using Type Curves-Evaluation of Well Performance Behavior in a Multiwell Reservoir System[J]. Society of Petroleum Engineers, 2001(9):186-194.
[3]Sureshjani M H, Behmanesh H, Clarkson C R. Multi-Well Gas Reservoirs Production Data Analysis[C].SPE Unconventional Resources Conference-Canada. 2013(12):230-234.
[4]Shahamat M S, Clarkson C R. Multiwell, Multiphase Flowing Material Balance[C].SPE Unconventional Resources Conference. 2017(2):149-154.
[5]Fetkovich M J. Decline Curve Analysis Using Type Curves[J]. Journal of Petroleum Technology, 1980, 32(6):1065-1077.
[6]Carter R D. Type Curves for Finite Radial and Linear Gas-Flow Systems:Constant-Terminal-Pressure Case[J]. Society of Petroleum Engineers Journal, 1985, 25(5):719-728.
[7]Arabloo M, Gerami S. A new approach for analysis of production data from constant production rate wells in gas condensate reservoirs[J].Journal of Natural Gas Science&Engineering, 2014(21):725-731.
[8]Cox S, Sutton R, Blasingame T. Errors Introduced by Multiphase Flow Correlations on Production Analysis[J]. Journal of Petroleum Technology,2006(5):132-138.