scholarly journals Effect of Sulfur Deposition on the Horizontal Well Inflow Profile in the Heterogeneous Sulfur Gas Reservoir

ACS Omega ◽  
2021 ◽  
Vol 6 (7) ◽  
pp. 5009-5018
Author(s):  
Mingren Shao ◽  
Qi Yang ◽  
Bo Zhou ◽  
Shuhui Dai ◽  
Ting Li ◽  
...  
Keyword(s):  
Horizontal Well ◽  
Sulfur Deposition ◽  
Gas Reservoir ◽  
Inflow Profile

Productivity Prediction of Horizontal Well with Sulfur Deposition in Sour Gas Reservoir

2012 ◽  
Vol 268-270 ◽  
pp. 1207-1211
Author(s):  
Jing Hong Hu ◽  
Zhi Ping Li ◽  
Lei Wang ◽  
Ling Ye Meng ◽  
Ju Hong Lu
Keyword(s):  
Horizontal Well ◽  
Elemental Sulfur ◽  
Sulfur Deposition ◽  
Gas Reservoir ◽  
Reservoir Heterogeneity ◽  
The Real ◽  
Reservoir Development ◽  
Initial Stage ◽  
Productivity Prediction ◽  
Sour Gas

With the development of sour gas reservoir, the utilization of horizontal well technology has a great significance. The accurate prediction of the productivity of horizontal well in developing sour gas reservoir will become more and more important. In this paper, productivity prediction formulas of the horizontal well are established with considering the effect of sulfur deposition on permeability. The effects of the length of horizontal well, the effective thickness of the reservoir, elemental sulfur deposition and reservoir heterogeneity on productivity can be analyzed by established formulas. According to the field case, the calculating results of improved Joshi’s equation approaches the real productivity, which means that it could be used to predict the productivity of horizontal well at initial stage during sour gas reservoir development. The results can be used as a reference for the development of similar sour gas reservoir.

scholarly journals Prediction of water breakthrough time in horizontal Wells in edge water condensate gas reservoirs

2020 ◽  
Vol 213 ◽  
pp. 02009
Author(s):  
Quan Hua Huang ◽  
Xing Yu Lin
Keyword(s):  
Horizontal Well ◽  
Negative Impact ◽  
Horizontal Wells ◽  
Breakthrough Time ◽  
Gas Reservoirs ◽  
Gas Reservoir ◽  
Water Breakthrough ◽  
Calculation Results ◽  
Seepage Model ◽  
Reasonable Prediction

Horizontal Wells are often used to develop condensate gas reservoirs. When there is edge water in the gas reservoir, it will have a negative impact on the production of natural gas. Therefore, reasonable prediction of its water breakthrough time is of great significance for the efficient development of condensate gas reservoirs.At present, the prediction model of water breakthrough time in horizontal Wells of condensate gas reservoir is not perfect, and there are mainly problems such as incomplete consideration of retrograde condensate pollution and inaccurate determination of horizontal well seepage model. Based on the ellipsoidal horizontal well seepage model, considering the advance of edge water to the bottom of the well and condensate oil to formation, the advance of edge water is divided into two processes. The time when the first water molecule reaches the bottom of the well when the edge water tongue enters is deduced, that is, the time of edge water breakthrough in condensate gas reservoir.The calculation results show that the relative error of water breakthrough time considering retrograde condensate pollution is less than that without consideration, with a higher accuracy. The example error is less than 2%, which can be effectively applied to the development of edge water gas reservoir.

Productivity formula of horizontal well with gas and water production in ultra-high pressure and low permeability gas reservoir

2021 ◽  
Author(s):  
Zhang Chu Yue ◽  
Cao Jian ◽  
Li Xu Cheng ◽  
Zhang Zhe Lun ◽  
Wang Ning ◽  
...  
Keyword(s):  
High Pressure ◽  
Horizontal Well ◽  
Low Permeability ◽  
Water Production ◽  
Gas Reservoir ◽  
Ultra High Pressure

A New Method to Determine and Forecast Deliverability Equation for Fractured Horizontal Well in Tight Gas Reservoir

2015 ◽  
Author(s):  
Xiangji Dou ◽  
Xinwei Liao ◽  
Huawei Zhao ◽  
Tianyi Zhao ◽  
Zhiming Chen ◽  
...  
Keyword(s):  
Horizontal Well ◽  
New Method ◽  
Tight Gas ◽  
Gas Reservoir ◽  
Fractured Horizontal Well ◽  
Tight Gas Reservoir

A simulator for production prediction of multistage fractured horizontal well in shale gas reservoir considering complex fracture geometry

2019 ◽  
Vol 67 ◽  
pp. 14-29 ◽  
Author(s):  
Rui-han Zhang ◽  
Lie-hui Zhang ◽  
Hui-ying Tang ◽  
Sheng-nan Chen ◽  
Yu-long Zhao ◽  
...  
Keyword(s):  
Shale Gas ◽  
Horizontal Well ◽  
Gas Reservoir ◽  
Fracture Geometry ◽  
Complex Fracture ◽  
Shale Gas Reservoir ◽  
Fractured Horizontal Well ◽  
Production Prediction

scholarly journals Production Rate Analysis of Fractured Horizontal Well considering Multitransport Mechanisms in Shale Gas Reservoir

Geofluids ◽  
2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Qi-guo Liu ◽  
Wei-hong Wang ◽  
Hua Liu ◽  
Guangdong Zhang ◽  
Long-xin Li ◽  
...  
Keyword(s):  
Production Rate ◽  
Shale Gas ◽  
Horizontal Well ◽  
Production Performance ◽  
Natural Fractures ◽  
Gas Reservoir ◽  
Isothermal Adsorption ◽  
Well Production ◽  
Shale Gas Reservoir ◽  
Fractured Horizontal Well

Shale gas reservoir has been aggressively exploited around the world, which has complex pore structure with multiple transport mechanisms according to the reservoir characteristics. In this paper, a new comprehensive mathematical model is established to analyze the production performance of multiple fractured horizontal well (MFHW) in box-shaped shale gas reservoir considering multiscaled flow mechanisms (ad/desorption and Fick diffusion). In the model, the adsorbed gas is assumed not directly diffused into the natural macrofractures but into the macropores of matrix first and then flows into the natural fractures. The ad/desorption phenomenon of shale gas on the matrix particles is described by a combination of the Langmuir’s isothermal adsorption equation, continuity equation, gas state equation, and the motion equation in matrix system. On the basis of the Green’s function theory, the point source solution is derived under the assumption that gas flow from macropores into natural fractures follows transient interporosity and absorbed gas diffused into macropores from nanopores follows unsteady-state diffusion. The production rate expression of a MFHW producing at constant bottomhole pressure is obtained by using Duhamel’s principle. Moreover, the curves of well production rate and cumulative production vs. time are plotted by Stehfest numerical inversion algorithm and also the effects of influential factors on well production performance are analyzed. The results derived in this paper have significance to the guidance of shale gas reservoir development.

Well Test Interpretation Method of Horizontal Well in Stress-Sensitive Gas Reservoir

2013 ◽  
Vol 295-298 ◽  
pp. 3183-3191
Author(s):  
Xiang Yi Yi ◽  
Zhi Zhang ◽  
Cheng Yong Li ◽  
De Cai Li ◽  
Sheng Bo Wang
Keyword(s):  
Horizontal Well ◽  
Test Interpretation ◽  
Fractured Reservoir ◽  
Well Test ◽  
Gas Reservoir ◽  
Type Curve ◽  
Flow Through ◽  
Function Integration ◽  
Lord Kelvin ◽  
Interpretation Method

Stress-sensitive widely exists in fractured reservoir. In this paper, a mathematical model of flow in stress-sensitive reservoir with horizontal well is established based on experimental data and with process of linearization. By using of Lord Kelvin point-source solution, Bessel function integration and Poisson superimpose formula, the dimensionless pressure response function of horizontal well in infinite stress-sensitive reservoir is obtained. And then the derivative type curve is calculated. Based on the type curve, the characteristics and influencing factors of the fluid flow through porous medium of horizontal well in stress-sensitive gas reservoir are analyzed.

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