Non-Darcy effect on fracture parameters optimization in fractured CBM horizontal well

2015 ◽  
Vol 27 ◽  
pp. 1438-1445 ◽  
Author(s):  
Xiaoqiu Wang ◽  
Zhiming Wang ◽  
Quanshu Zeng ◽  
Gang Yang ◽  
Tian Chen ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Parameters Optimization ◽  
Fracture Parameters

Fracture Parameters Optimization of BZ Oilfield Horizontal Well Integral Fracturing

2013 ◽  
Vol 457-458 ◽  
pp. 692-698
Author(s):  
Wen Jiang Xu ◽  
Yong Quan Hu ◽  
Jin Zhou Zhao ◽  
Zhi Qiang Li
Keyword(s):  
Mathematical Model ◽  
Optimization Design ◽  
Horizontal Well ◽  
Parameters Optimization ◽  
Production Performance ◽  
Oil Well ◽  
Fracture Conductivity ◽  
Fracture Length ◽  
Fracture Parameters ◽  
The Impact

Horizontal well technology has become an important technological means for offshore oilfield exploitation, but at present, most of the fracture parameters optimization of horizontal well fracturing are based on the single wells productivity after fracturing and pay less attention to consider the impact of injection wells.Therefore, aiming at injection and production development mode of BZ oilfield horizontal wells after fracturing, Integral fracturing physical model and productivity forecast mathematical model of horizontal well for the purpose of improving integrated exploitation benefit of the block is established respectively.Combining with reservoir parameters of BZ oilfield, a corresponding numerical simulator is developed by means of solving mathematical model to forecast production performance of oil well with different fracture number, fracture length, fracture conductivity. The best fracture parameters are obtained through analyzing the effect of fracture parameters on accumulative oil production, which provides theoretical foundation for integral fracturing optimization design of horizontal well of BZ oilfields, and has vital site guiding significance.

Parameters Optimization of Fractures with One for Injection and Two Others for Production of Horizontal Wells Fracturing on Offshore Oilfields

2014 ◽  
Vol 962-965 ◽  
pp. 489-493
Author(s):  
Zhi Qiang Li ◽  
Yong Quan Hu ◽  
Wen Jiang Xu ◽  
Jin Zhou Zhao ◽  
Jian Zhong Liu ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Oil Production ◽  
Horizontal Wells ◽  
Simulation Method ◽  
Parameters Optimization ◽  
Development Mode ◽  
Fracture Conductivity ◽  
Fracture Length ◽  
Fractured Horizontal Well ◽  
Production Research

This article presents a new exploitation method based on the same fractured horizontal well with fractures for injection or production on offshore low permeability oilfields for the purpose of adapting to their practical situations and characteristics, which means fractures close to the toe of horizontal well used for injecting water and fractures near the heel of horizontal well used for producing oil. According to proposed development mode of fracturing, relevant physical model is established, Then reservoir numerical simulation method has been applied to study the effect of arrangement pattern of injection and production fractures, fracture conductivity, fracture length on oil production. Research indicates cumulative oil production is much higher by employing the middle fracture for injecting water compared with using the remote one, suggesting that the middle fracture adopted for injecting water, and hydraulic fracture length and conductivity have been optimized. The proposed development pattern of a staged fracturing for horizontal wells with some fractures applied for injecting water and others for production based on the same horizontal well provides new thoughts for offshore oilfields exploitation.

Numerical Simulation for Shale Gas Flow in Complex Fracture System of Fractured Horizontal Well

2018 ◽  
Vol 19 (3-4) ◽  
pp. 367-377 ◽  
Author(s):  
Yingzhong Yuan ◽  
Wende Yan ◽  
Fengbo Chen ◽  
Jiqiang Li ◽  
Qianhua Xiao ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Shale Gas ◽  
Horizontal Well ◽  
Fracture Network ◽  
Gas Reservoir ◽  
Complex Fracture ◽  
Shale Gas Reservoir ◽  
Fracture Parameters ◽  
Fracture Systems ◽  
Fractured Horizontal Well

AbstractComplex fracture systems including natural fractures and hydraulic fractures exist in shale gas reservoir with fractured horizontal well development. The flow of shale gas is a multi-scale flow process from microscopic nanometer pores to macroscopic large fractures. Due to the complexity of seepage mechanism and fracture parameters, it is difficult to realize fine numerical simulation for fractured horizontal wells in shale gas reservoirs. Mechanisms of adsorption–desorption on the surface of shale pores, slippage and Knudsen diffusion in the nanometer pores, Darcy and non-Darcy seepage in the matrix block and fractures are considered comprehensively in this paper. Through fine description of the complex fracture systems after horizontal well fracturing in shale gas reservoir, the problems of conventional corner point grids which are inflexible, directional, difficult to geometrically discretize arbitrarily oriented fractures are overcome. Discrete fracture network model based on unstructured perpendicular bisection grids is built in the numerical simulation. The results indicate that the discrete fracture network model can accurately describe fracture parameters including length, azimuth and density, and that the influences of fracture parameters on development effect of fractured horizontal well can be finely simulated. Cumulative production rate of shale gas is positively related to fracture half-length, fracture segments and fracture conductivity. When total fracture length is constant, fracturing effect is better if single fracture half-length or penetration ratio is relatively large and fracturing segments are moderate. Research results provide theoretical support for optimal design of fractured horizontal well in shale gas reservoir.

scholarly journals Fracturing Parameters Optimizing Simulation of Horizontal Well In WeiYuan Shale Gasfield

2021 ◽  
Vol 2076 (1) ◽  
pp. 012001
Author(s):  
Mingguang Che ◽  
Meng Wang ◽  
Bo Zeng ◽  
Yi Song ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Shale Gas ◽  
Horizontal Well ◽  
Horizontal Wells ◽  
Fluid Volume ◽  
Parameters Optimization ◽  
Geological Model ◽  
Gas Field ◽  
Number Of Clusters ◽  
Pumping Rate ◽  
Lateral Length

Abstract Multistage fracturing and multi-clusters with long lateral fracturing were applied during developing the WeiYuan shale gas field, and the fracturing parameters were variable obviously for the fracturing lateral, perforating clusters, pumping rate, fracturing fluid volume and proppant quality. In this paper, the 3D geological model of a WeiYuan shale gas pad was used to simulate and optimize the fracturing parameters of the shale gas horizontal wells. The simulating results show that there is a reasonable matching relationship between different fracturing lateral length and the perforating clusters, and there is an optimal fluid volume and proppant quality. As the length of the fracturing lateral and the number of clusters increase, the spacing of horizontal wells need to be reduced reasonably. With the purpose of fracturing parameters optimization for WeiYuan shale gas horizontal wells, it is recommended to increase the number of perforation clusters, increase the treating rate, and use the reasonable fluid volume and proppant quality for different fracturing lateral. The research results of this paper have guiding significance for the optimization and treatment of fracturing shale gas horizontal well.

Horizontal Well Fracturing Optimization Numerical Simulation

2014 ◽  
Vol 599-601 ◽  
pp. 336-340
Author(s):  
Zhen Yu Liu ◽  
Wan Wei Yang ◽  
Hu Zhen Wang ◽  
Tian Luan ◽  
Jin Bao He ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Mixed Finite Element ◽  
Mixed Finite Element Method ◽  
Pressure Profile ◽  
Fracture Length ◽  
Fracture Parameters ◽  
Contrast Analysis ◽  
Artificial Fracture ◽  
Arbitrary Triangle ◽  
Production Dynamic

Based on the mixed finite element method ，simulated the horizontal well fracturing complex artificial fracture. The article use line elements to describe the horizontal well bore, arbitrary triangle elements to describe the formation. To influence the fracturing horizontal well productivity of artificial fracture parameters are optimized, including the number and fracture length. For different fracture parameters of production dynamic curve carries on the contrast analysis, obtained the different fracture parameters of pressure profile and saturation profile. Research shows that the crack amount and crack length of horizontal well fracturing production dynamic all have obvious influence, but not the bigger the better, there exists optimal value.

Parameters Optimization of Stereoscopic Horizontal Well Patterns by Using Numerical Reservoir Simulation

2012 ◽  
Vol 433-440 ◽  
pp. 2602-2606
Author(s):  
Jun Lai Wu ◽  
Yue Tian Liu ◽  
Hai Ning Yang
Keyword(s):  
Reservoir Simulation ◽  
Horizontal Well ◽  
Simulation Method ◽  
Parameters Optimization ◽  
Water Flooding ◽  
Fracture Permeability ◽  
Numerical Reservoir Simulation ◽  
Well Pattern ◽  
Liaohe Oilfield ◽  
Buried Hill

Well pattern is the most important affecting factor to the ultimate recovery for an oilfield development. Many researches are reported on areal well pattern, which is widely used in conventional reservoirs development such as low permeability reservoirs, heavy oil reservoirs, multi-layer sandstone reservoirs, etc. In this paper, according to the geological characteristics of fractured buried hill reservoir of Liaohe Oilfield, we firstly present the concept of stereoscopic well patterns and compare it with common areal water flooding. By using numerical reservoir simulation method, we design and optimize the parameters of 5-spot stereoscopic horizontal well patterns, including payzone thickness and horizontal well length under different anisotropic factors of fracture permeability. This can be successfully applied on the development of MM block fractured buried hill reservoir of Liaohe Oilfield.

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