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- Arps decline curve is basic mathematic model used for studying oil/gas production decline regularity at present, but it has some defects. Arps递减曲线是目前用于研究油气产量递减规律的基本数学模型;但该模型仍有一些不足之处.
- Arps equation,a optimun fitting of production decline curve analysis of oil and gas reservoirs is presented in this paper. Arps方程的推导,提出了油气藏产量递减曲线分析的最佳拟合法。
- Based on production decline curve equation, through mathematical derivation, a kind of logarithmic type production decline curve equation is obtained. 在产量衰减曲线方程的基础上,通过数学推导,得到了一种对数型产量衰减曲线方程。
- Down-to-date Production Decline Curve Automatic Analysis Method 现代产量递减曲线自动分析方法
- There are some results as below:(1) With mathematical model improvement of unsteady porous flow, new theoretical typecurves are plotted which can enlarge Arps production decline curves from leaky boundaries. 通过数学模型和分析计算得到了以下认识和结果:(1)改进了直井不稳态产能分析渗流数学模型,求解后形成了新的理论图板。
- For waterflooding oilfields, the methods for prediction of recoverable re-serves include water drive curve, production decline, forecast model and numerical simulation. 然而,当油气田业已进入递减阶段之后,产量递减法则是最为重要的预测方法。
- Based on Arps decline curve equation this paper presents the autoregressive model for analyzing the production exponential decline curve, the analysis is convenient and reliable. 本文基于Arps递减曲线方程,提出了油气田产量指数递减曲线分析的自 回归模型。
- After the gas field has entered into the production decline stage , its decline law can be studied by use of the typical curve fitting method or coordinate transform method through Arps hyperbolic decline equation generally . 气田进入产量递减期后 ,一般通过Arps递减方程 ,应用典型曲线拟合或坐标变换法来研究递减规律。
- The relationship of reserve-production ratio and time and the cut-off value of stable production have been derived on basis of Arps decline curve and mathematical model of production prediction. 在Arps递减曲线和产量预测数学模型理论研究的基础上,分别导出了油田产量遵循不同开发规律时储采比与时间的关系式及确定油田保持稳产时所需的储采比下限值,将其应用于辽河油区合理储采比确定中,效果较好。
- One can determine the corresponding parameters of Arps decline curve by using the parameters obtained. 用求出的曲线参数还可求出相应的Arps递减曲线参数。
- Traditional Arps production decline analysis method requires to determine the initial time, production and decline ratio before analyzing. 传统的Arps产量递减分析方法要求事先选定递减规律的初始时间、初始产量及初始递减率,事实上这些参数是很难确定的。
- Based on Arps decline equation, the nomogram of decline curve assay is developed. 基于Arps递减方程,建立了衰减曲线分析的诺模图。
- Rome) Sixty-one governmental officials will meet next week in Bangkok to discuss the tendency of the world's rice production decline that is increasingly becoming a concern . 法新社罗马电)六十一个国家的政府官员下周将在曼谷集会,讨论日益令人关切的全球稻米产量下降趋势问题。
- To study the production decline is very significant for the later adjustment, production prediction and recoverable-reserves rechecking during a gas reservoir development. 产量递减规律的研究对搞好气藏开发后期调整,产量预测及可采储量复核都有重要意义。
- A production decline model which is fit for water huff and puff well is established based on the in-site production data and imbibition experiment in lab. 并根据矿场生产动态数据和室内渗吸实验,建立适合于注水吞吐井的产量递减模型。
- One can determine the corresponding parameters of Arps decline curve by using the parameters obtained.So a new approach to get the parameters o... 计算实例表明,这种增长曲线和递减曲线及其参数求取方法具有很大的理论意义和实际应用价值。
- But from the production history of the individual well in the block, most of the wells have such problems as short stable production period and quick production decline. 但从该区块单井的生产历史来看,大部分井存在稳产时间短、递减快的问题。
- The displacement characteristic of the water-drive curve shows the cumulative oil production-water cut linear relation and corresponds Arps exponential decline curve. 由于推导是可逆的,从这个意义上说,我们也完成了这类水驱曲线的推导。 这类水驱曲线的驱替特征表现为累积产油量与含水率成直线关系,并且对应于Arps指数递减曲线。
- TheCommerce Department revealed that during the last three months of 2008, itsgross domestic product decline at an annual rate of 6.2%, the sharpest fallingin 25 years. 商务部指出,2008年的最后三个月,国内生产总值以每年6.;2%25的速度下降,是25年来最急剧的下滑。
- The density of power spectral entropy, on the whole, is an exponential decline curve with frequency augmentation without reference to water flooded extent. 功率谱密度不论水淹程度如何,整体为一随频率增大其能量按指数递减连续频谱;
