A New Model for Evaluation of Horizontal Well in Bottom Water Reservoirs

2013 ◽  
Vol 411-414 ◽  
pp. 486-491
Author(s):  
Yue Dong Yao ◽  
Yun Ting Li ◽  
Yuan Gang Wang ◽  
Ze Min Ji
Keyword(s):  
Oil Recovery ◽  
Field Data ◽  
Horizontal Well ◽  
Bottom Water ◽  
Interaction Analysis ◽  
Evaluation Model ◽  
Water Reservoir ◽  
Well Performance ◽  
Water Reservoirs ◽  
Actual Field

It is the aim of this research to describe the horizontal well performance in different conditions, this paper firstly introduces 13 dimensionless variables to describe the influence factors of horizontal well performance in bottom water reservoir and calculates the range of all the variations from low to high level by making a statistics of the actual field data of the 23 horizontal wells, then establishes the oil recovery model with response surface method using a 3 level-13 variables Box-Behnken design (BBD) . Based on the evaluation model, single factor sensitivity and interaction analysis between any two factors are carried out. Finally, research on horizontal well in typical bottom water reservoirs indicates that the values calculated by the new evaluation model fit the actual field data, which proves that the evaluation model can provide criteria for the design or optimization of horizontal well development in a bottom water reservoir.

Systematic Evaluation on Horizontal well Performance in Bottom Water Reservoir

2013 ◽  
Vol 411-414 ◽  
pp. 3129-3133 ◽  
Author(s):  
Yun Ting Li ◽  
Yue Dong Yao ◽  
Tao Peng ◽  
Dan Sang ◽  
Xiang Chun Wang
Keyword(s):  
Oil Recovery ◽  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoir ◽  
Systematic Evaluation ◽  
Research Trend ◽  
Well Performance ◽  
Key Factors ◽  
Water Breakthrough ◽  
Calculation Results

Development of bottom water reservoir with horizontal well can effectively slow down water coning and avoid early water breakthrough in oil wells, which promotes the extensive application of horizontal well in bottom water reservoir. In this paper, literatures about horizontal well are investigated, and the latest research trend is summarized. All factors such as reservoirs, fluid property and production mode to influence horizontal well performance in bottom water reservoir are systematically studied by using reservoir numerical simulation. Based on the calculation results of reservoir parameters of the pilot area, comprehensive analysis to the key factors which affecting horizontal well performance is carried out and the influence degree of various factors on oil recovery is obtained. In a word, the research results in this paper can provide criteria for the design or optimization of horizontal well development in bottom water reservoir.

A Quick Evaluation Model for Horizontal Well Development in Bottom Water Reservoir

2011 ◽  
Vol 347-353 ◽  
pp. 398-402
Author(s):  
Yuan Gang Wang ◽  
Yue Dong Yao ◽  
Ming Jiang ◽  
Ze Min Ji
Keyword(s):  
Correction Factor ◽  
Oil Recovery ◽  
Horizontal Well ◽  
Bottom Water ◽  
Evaluation Model ◽  
Water Reservoir ◽  
Recoverable Reserves ◽  
Well Development ◽  
Heterogeneity Correction ◽  
Water Cut

The evaluation model for horizontal well development has significant potential in recoverable reserves uncertainty studies. This paper firstly establishes an evaluation model on the degree of reserve recovery at different level of water cut, and then makes a chart of the dimensionless aspect seepage ratio against the degree of reserve recovery at different level of water cut. Secondly, introduces heterogeneity correction factor and saturation correction factor to improve the oil recovery model. Finally, the oil recovery of 6 reservoirs with horizontal well development in Dagang Oil Company indicates that the prediction of the evaluation model is agreement with the actual data, and the model can provide criteria for horizontal well development in a bottom water reservoir.

Reservoir and Wellbore Flow Coupling Model for Fishbone Multilateral Wells in Bottom Water Drive Reservoirs

2021 ◽  
pp. 1-27
Author(s):  
ping Yue ◽  
Jiantang Zhou ◽  
Li Xia Kang ◽  
Ping Liu ◽  
Jia Chunsheng ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Bottom Water ◽  
Water Reservoir ◽  
Pressure Profile ◽  
Coupling Model ◽  
New Model ◽  
Flow Coupling ◽  
Field Situation ◽  
Production Wells ◽  
Actual Field

Abstract Nowadays, different types of complex production wells are applied in challenging reservoirs in order to maximize oil recovery. A representative application is the fishbone multilateral horizontal wells, which have advantages of expanding the drainage area information and reducing the pressure loss in the long single lateral wellbore. This paper investigated the performance of fishbone wells and derived a wellbore and reservoir flow coupling model for fishbone multilateral wells in the bottom water reservoirs. The new model considered plenty of parameters that may have significant impacts on productivity and pressure drop in the well, including the fishbone structure, the main and branch wellbores' length, the spacing distance of the branch wellbores, wellbore radius, and preformation parameters. Furthermore, a sensitivity analysis example by the numerical method presented in this paper. Compared with other models, our coupling model, when it is degraded to horizontal well, is more consistent with the results of actual field situation. In another comparative analysis, the results of the new model with branches show a good match with the numerical simulation results by software. The proposed method in this paper can be used as a valuable tool to analyze the productivity, wellbore inflow profile, and pressure profile of the fishbone multilateral wells in the bottom water reservoir.

Existence of Flow Barriers Improves Horizontal Well Production in Bottom Water Reservoirs

2008 ◽  
Author(s):  
Peng Zhang ◽  
Xian-Huan Wen ◽  
Lizhen Ge ◽  
Bo Li ◽  
QingHong Yang ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoirs ◽  
Well Production

The Horizontal Well Production Technique with Thin Bedded Bottom Water Reservoir in Luliang Oil Field

2010 ◽  
Author(s):  
Jin Huo ◽  
Guoxin Shi ◽  
Jianguo Lu ◽  
Linxiang Sang ◽  
Jun Shi ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Water Reservoir ◽  
Oil Field ◽  
Production Technique ◽  
Well Production

Horizontal Well Performance In Oil Reservoirs With Bottom Water Or Gas Cap

10.2118/96-20 ◽  
1996 ◽  
Author(s):  
F. Azar-Nejad ◽  
W.S. Tortike ◽  
S.M. Farouq Ali
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Oil Reservoirs ◽  
Well Performance

scholarly journals Productivity evaluation of horizontal well in heterogeneous reservoir with composite water aquifer

2021 ◽  
Vol 11 (3) ◽  
pp. 1363-1373
Author(s):  
Hui Yuan ◽  
Wenhong Li ◽  
Yingzhong Yuan ◽  
Jiao Luo ◽  
Wende Yan
Keyword(s):  
Horizontal Well ◽  
Bottom Water ◽  
Superposition Principle ◽  
Research Result ◽  
Water Reservoir ◽  
Water Contact ◽  
Heterogeneous Reservoir ◽  
Oil Water ◽  
Productivity Prediction ◽  
Thin Reservoir

AbstractHorizontal well is an important way to develop thin reservoir with edge-bottom water aquifer. For the horizontal well near oil–water contact, the reservoir have the features of edge water and bottom water at the same time. The productivity formula of horizontal well in pure edge water or pure bottom water reservoir is not fully applicable to this type of reservoir. For the heterogeneous reservoir with composite water aquifer, the horizontal well is divided into multiple well sections by using the concept of multi-segment well. Based on the seepage mechanics theory and potential superposition principle, considering the mutual interference between multi well sections, the productivity formula of horizontal well in heterogeneous reservoir with composite water aquifer is established. The new productivity formula considers the effect of reservoir heterogeneity, the quasi-linear flow of lateral edge water and the ellipsoidal flow of vertical bottom water. It can effectively determine the influence range and drainage distance of edge water in a heterogeneous reservoir with composite water aquifer. According to the test data of horizontal wells in Weizhou 11-1 oilfield, the drainage distance b of edge water is fitted and used to predict the productivity of new wells, and the result is very good. The research result lays a foundation for productivity prediction of horizontal well in heterogeneous reservoir with composite water aquifer.

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