The Experts below are selected from a list of 66930 Experts worldwide ranked by ideXlab platform
Wu Yu-shu - One of the best experts on this subject based on the ideXlab platform.
-
Triple-continuum Numerical Well Test interpretation method for a naturally fractured vuggy reservoir
Chinese Journal of Hydrodynamics, 2012Co-Authors: Wu Yu-shuAbstract:Based on conceptual mathematical model of multi-continuum flows,using Gauss-Newton inversion method,an auto-match method of triple-continuum Numerical Well Testing pressure response curve for a naturally fractured vuggy was presented and exemplified.It was pointed that it is very important to select a reasonable initial model and disturbing value and to determine inverted parameter according to the result of sensitivity analysis.This method was used successfully in Well Test interpretation in the Tahe oilfield.
-
INFLUENCING FACTORS OF THE Numerical Well Test MODEL OF THE TRIPLE-CONTINUUM IN FRACTURED VUGGY RESERVOIR
Journal of Southwest Petroleum University, 2010Co-Authors: Wu Yu-shuAbstract:The sensitivity of each parameter to the Well Testing curve is analyzed by solving triple-continuum Numerical Well Testing model of fractured vuggy reservoir,and the parameter system of this Numerical Well Testing model is determined.These parameters are corresponding to permeability,size and length of cave and fracture and so on.Different parameters have different influences on curve:initial formation pressure and fracture permeability have influence on the position of pressure build-up curve,skin factor;the Well bore storage factor mainly has influence on the shape of early stage of pressure build-up curve,and other parameters have influence on the shape of the two turnings of the curve.All of these conclusions are very important for matching Well Testing curve.
-
Triple-continuum Numerical Well Test interpretation method of oil-water flow for a naturally fractured vuggy reservoir
Chinese Journal of Hydrodynamics, 2010Co-Authors: Wu Yu-shuAbstract:Based on conceptual mathematical model of multi-continuum seepage flows,a triple-continuum Numerical Well Testing model of oil-water flow for a naturally fractured vuggy is presented.The model was solved using Numerical method and pressure response curve and its characteristic were obtained.It was pointed that pressure buildup curve of two phase flow is different from that of single phase flow and is depended on initial oil saturation.The result indicates that the Well Testing curve of two phase flow condition can not be analyzed using single phase flow model.Through analyzing influencing factor of pressure response curve,the two phase flow Well Testing interpretation method was presented,in which oil-water rate should be matched before pressure response curve is matched.
Wilson C Chin - One of the best experts on this subject based on the ideXlab platform.
-
chapter 10 transient compressible flows Numerical Well Test simulation
Quantitative Methods in Reservoir Engineering (Second Edition), 2017Co-Authors: Wilson C ChinAbstract:Transient compressible Numerical flow simulation is introduced and methods are developed to integrate the three-dimensional equations (in general curvilinear coordinates). Pressure and streamfunction solutions are discussed. Examples are given, e.g., pressure drawdown and buildup, Wells in “Texas shaped reservoir,” application of “alternating-direction-implicit (ADI) methods,” and so on. An example approximation factorization method, popular in the literature, is summarized.
-
Chapter 10 – Transient Compressible Flows: Numerical Well Test Simulation
Quantitative Methods in Reservoir Engineering, 2017Co-Authors: Wilson C ChinAbstract:Transient compressible Numerical flow simulation is introduced and methods are developed to integrate the three-dimensional equations (in general curvilinear coordinates). Pressure and streamfunction solutions are discussed. Examples are given, e.g., pressure drawdown and buildup, Wells in “Texas shaped reservoir,” application of “alternating-direction-implicit (ADI) methods,” and so on. An example approximation factorization method, popular in the literature, is summarized.
-
10 transient compressible flows Numerical Well Test simulation
Quantitative Methods in Reservoir Engineering, 2002Co-Authors: Wilson C ChinAbstract:Transient compressible Numerical flow simulation is introduced and methods are developed to integrate the three-dimensional equations (in general curvilinear coordinates). Pressure and streamfunction solutions are discussed. Examples are given, e.g., pressure drawdown and buildup, Wells in “Texas shaped reservoir,” application of “alternating-direction-implicit (ADI) methods,” and so on. An example approximation factorization method, popular in the literature, is summarized.
-
Quantitative Methods in Reservoir Engineering - 10 – Transient Compressible Flows: Numerical Well Test Simulation
2002Co-Authors: Wilson C ChinAbstract:Transient compressible Numerical flow simulation is introduced and methods are developed to integrate the three-dimensional equations (in general curvilinear coordinates). Pressure and streamfunction solutions are discussed. Examples are given, e.g., pressure drawdown and buildup, Wells in “Texas shaped reservoir,” application of “alternating-direction-implicit (ADI) methods,” and so on. An example approximation factorization method, popular in the literature, is summarized.
Geng Meng - One of the best experts on this subject based on the ideXlab platform.
-
Application of Numerical Well Test Analysis in Fractured Carbonate Reservoirs——By Taking Fractured Carbonate Reservoir in Taq Taq Oilfield in Geneva Switzerland for Example
Journal of Oil and Gas Technology, 2012Co-Authors: Geng MengAbstract:Both Numerical and analytical Well Testing methods were used in fractured carbonate reservoirs in Taq Taq Oilfield,the results were contrasted.It shows that the Well Test interpretation has ambiguity.Even the log-log curves match completely;the interpretation may be different from actual Well production.Compared with the conventional analytical method,Numerical Well Testing technology has unique advantages on complex boundary and heterogeneous reservoirs and it can be used for comprehensively analyzing the Well Test dynamic evaluation and static geology study,by which a visual reservoir property model is established.In consideration of the changes of reservoir thickness and oil saturation,the deep understanding of the present reservoir performance is realized,the interpretation of Numerical Well Testing technology is more insistent with the real reservoir and it has better application prospects.
-
application of Numerical Well Test analysis in fractured carbonate reservoirs by taking fractured carbonate reservoir in taq taq oilfield in geneva switzerland for example
Journal of Oil and Gas Technology, 2012Co-Authors: Geng MengAbstract:Both Numerical and analytical Well Testing methods were used in fractured carbonate reservoirs in Taq Taq Oilfield,the results were contrasted.It shows that the Well Test interpretation has ambiguity.Even the log-log curves match completely;the interpretation may be different from actual Well production.Compared with the conventional analytical method,Numerical Well Testing technology has unique advantages on complex boundary and heterogeneous reservoirs and it can be used for comprehensively analyzing the Well Test dynamic evaluation and static geology study,by which a visual reservoir property model is established.In consideration of the changes of reservoir thickness and oil saturation,the deep understanding of the present reservoir performance is realized,the interpretation of Numerical Well Testing technology is more insistent with the real reservoir and it has better application prospects.
Liu Yuewu - One of the best experts on this subject based on the ideXlab platform.
-
Effects of perforated completion parameters on Well Test type curves
Acta Petrologica Sinica, 2013Co-Authors: Liu YuewuAbstract:Perforated completion is one of the most commonly used completion methods in oil and gas development.The single Well productivity is largely determined by the completion method for a given oil-gas Well.The Well Test analysis and single Well productivity calculation are normally realized by using a 2-D open hole model,however,this approach may cause large errors.Based on properties of perforated completion and permeability anisotropy of reservoirs,a three-dimensional Numerical Well Test model was proposed to analyze the transient flow in perforated vertical Wells.With the model,Well Test type curves and pressure fields of perforated Wells are obtained by using the 3-D finite elemnet method(FEM).Through analyses of Well Test type curves and the three-dimensional flow in the pressure field,six flow phases can be recognized on Well Test type curves of perforated Wells,i.e.Wellbore storage,the first transition,early-time partly radial flow around the perforation,the second transition,late-time system radial flow and boundary-dominated flow.Among them the early-time partly radial flow around the perforation is the most important characteristic of perforated Wells.Effects of perforated completion parameters,such as perforation density,length,phase angle and permeability anisotropy,on the transient pressure and derivative responses were studied,which provides theoretical guidance to design perforating types and analyze Well Test data of perforated Wells.The calculation result of the total skin factor of perforated Wells showed that the productivity of a perforated Well may be higher than that of an open hole if the perforation is long enough or the perforation density is high enough.Increasing the perforation length is an effective way to enhance the productivity of a perforated Well.
-
advance of Well Test analysis for heterogenous reservoirs
Advances in Mechanics, 2005Co-Authors: Liu YuewuAbstract:Based on the definition of the reservoir types used in the Well Test analysis, this review forcuses on four points: the formation heterogeneity, the fluid distribution, the mathematical model and the Test data interpretation method. The concepts, such as the partially regular heterogeneous reservoir and arbitrarily heterogeneous reservoir, are expatiated in this paper. The present state and future trend of research are pointed out. It is best to combine the geological data and the dynamic data of the reservoir development to interpret the Well Test data. Numerical Well Test analysis method is the new trend for the future Test analysis.
Xingliang Deng - One of the best experts on this subject based on the ideXlab platform.
-
Well Test analysis methods of fractured vuggy carbonate gas reservoirs
Dynamic Description Technology of Fractured Vuggy Carbonate Gas Reservoirs, 2019Co-Authors: Tongwen Jiang, Xingliang DengAbstract:Abstract Well Tests for fractured vuggy carbonate gas reservoirs are challenging because of the diversity of Well Test curves, the ambiguity of interpretation results, and complexity of analysis models. In this section, the three-dimensional Numerical Well Test analysis method and the lifecycle Well Test analysis method are presented. The multilayer, three-dimensional Numerical Well Test model considers both lateral heterogeneity and vertical heterogeneity, and provides a mathematical description more similar to the actual reservoir performance. The combination of conventional analytical Well Tests, (2D and 3D), Numerical Well Tests, and advanced production decline analysis can greatly improve the reliability of interpretation results and the forecasting accuracy of key development indices. Moreover, the application of Well Test analysis results in the gas reservoir description, and the cautions in performance monitoring, are explained.
-
Integrated dynamic evaluation of depletion-drive performance in naturally fractured-vuggy carbonate reservoirs using DPSO–FCM clustering
Fuel, 2016Co-Authors: Daigang Wang, Xingliang Deng, Liu ZhiliangAbstract:Abstract Compared to the widely distributed porous and fractured-porous carbonate reservoirs, the naturally fractured-vuggy carbonate reservoirs (NFVCRs) found in Tarim Basin, China, suffer from strong heterogeneity, multiple types of reservoir bodies, poor connectivity, complicated flow behavior and various water–oil interplay relationship in most cases. Due to lack of powerful and suitable EOR (enhanced oil recovery) strategies, depletion-drive recovery is commonly adopted for practical production, and the efficient oilfield development remains a great challenge to all of us. Understanding the relationship between reservoir bodies, configuration, water–oil interplay and depletion-drive performance, is essential to exchange of oilfield development scheme and further potential tapping of the remaining oil. By introducing an self-adaptive particle swarm optimization (DPSO) to tackle the shortcomings of the conventional fuzzy c-means (FCM) in terms of sensitivity to initial values, initialization with randomly generated clustering centers, and easy involvement in local minima, a novel integrated dynamic evaluation method for depletion-drive performance in NFVCRs based on DPSO–FCM clustering is developed. In this paper, different fractured-vuggy reservoir types are identified combing drilling & Well logging response, Numerical Well Test analysis and production Test. The integrated diagnosis techniques including rate transient analysis, production decline analysis and reservoir energy evaluation, are employed to evaluate reservoir properties, furthermore, principal component analysis (PCA) is performed to reduce the dimensionality of input vector and establish the dynamic evaluation index system of depletion-drive performance. Taking a typical NFVCR in northern Tarim Basin as example, the proposed method is implemented to classify the production responses into four major patterns with eight sub-classes. Moreover, according to the insight of water–oil interplay relationship, depletion-drive production responses and identification of reservoir types, the water influx behaviors are divided into four general patterns. Eventually, the relevant dynamic clustering criterion and suitable potential-tapping strategies or measures are provided.
