Local Stress Shadow Effect Analysis in Multistage Hydraulic Fracturing Design Considering Small Drillhole Spacing

2017 ◽  
Author(s):  
V. Karpov ◽  
N. Parshin ◽  
A. Ryazanov ◽  
A. Moiseenko ◽  
A. Bochkarev ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Local Stress ◽  
Effect Analysis ◽  
Shadow Effect ◽  
Multistage Hydraulic Fracturing ◽  
Stress Shadow

Local Stress Shadow Effect Analysis in Multistage Hydraulic Fracturing Design Considering Small Drillhole Spacing (Russian)

2017 ◽  
Author(s):  
V. Karpov ◽  
N. Parshin ◽  
A. Ryazanov ◽  
A. Moiseenko ◽  
A. Bochkarev ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Local Stress ◽  
Effect Analysis ◽  
Shadow Effect ◽  
Multistage Hydraulic Fracturing ◽  
Stress Shadow

scholarly journals Stress shadow effect during multi-stage hydraulic fracturing with different wellbore arrangements

2021 ◽  
Vol 833 (1) ◽  
pp. 012184
Author(s):  
P L P Wasantha ◽  
H Konietzky ◽  
T Xu ◽  
B Xu
Keyword(s):  
Hydraulic Fracturing ◽  
Shadow Effect ◽  
Stress Shadow ◽  
Multi Stage

Novel Coiled Tubing Perforation Approach Enables Efficient Multistage Hydraulic Fracturing Operations in a Horizontal Well in Oman

2016 ◽  
Author(s):  
Ali Al-Ghaithi ◽  
Fahad Alawi ◽  
Ernest Sayapov ◽  
Ehab Ibrahim ◽  
Najet Aouchar ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Horizontal Well ◽  
Multistage Hydraulic Fracturing ◽  
Coiled Tubing

Stress perturbation caused by multistage hydraulic fracturing: Implications for deep fault reactivation

2021 ◽  
Vol 141 ◽  
pp. 104704
Author(s):  
Mengke An ◽  
Fengshou Zhang ◽  
Egor Dontsov ◽  
Derek Elsworth ◽  
Hehua Zhu ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Fault Reactivation ◽  
Deep Fault ◽  
Multistage Hydraulic Fracturing

Evolution and management of thick-hard roof using goaf-based multistage hydraulic fracturing technology—a case study in western Chinese coal field

2021 ◽  
Vol 14 (10) ◽  
Author(s):  
KaigeZheng ◽  
Tong Zhang ◽  
Jizhan Zhao ◽  
Yu Liu ◽  
Fei Yu
Keyword(s):  
Hydraulic Fracturing ◽  
Coal Field ◽  
Hard Roof ◽  
Multistage Hydraulic Fracturing ◽  
Chinese Coal

scholarly journals The Effect of Perforation Spacing on the Variation of Stress Shadow

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4040
Author(s):  
Weige Han ◽  
Zhendong Cui ◽  
Zhengguo Zhu
Keyword(s):  
Compressive Stress ◽  
Reservoir Rock ◽  
Hydraulic Fractures ◽  
Extended Finite Element ◽  
Gas Reservoir ◽  
Fracture Length ◽  
Shadow Effect ◽  
Stress Shadow ◽  
Initiation Pressure ◽  
Small Perforation

When the shale gas reservoir is fractured, stress shadows can cause reorientation of hydraulic fractures and affect the complexity. To reveal the variation of stress shadow with perforation spacing, the numerical model between different perforation spacing was simulated by the extended finite element method (XFEM). The variation of stress shadows was analyzed from the stress of two perforation centers, the fracture path, and the ratio of fracture length to spacing. The simulations showed that the reservoir rock at the two perforation centers is always in a state of compressive stress, and the smaller the perforation spacing, the higher the maximum compressive stress. Moreover, the compressive stress value can directly reflect the size of the stress shadow effect, which changes with the fracture propagation. When the fracture length extends to 2.5 times the perforation spacing, the stress shadow effect is the strongest. In addition, small perforation spacing leads to backward-spreading of hydraulic fractures, and the smaller the perforation spacing, the greater the deflection degree of hydraulic fractures. Additionally, the deflection angle of the fracture decreases with the expansion of the fracture. Furthermore, the perforation spacing has an important influence on the initiation pressure, and the smaller the perforation spacing, the greater the initiation pressure. At the same time, there is also a perforation spacing which minimizes the initiation pressure. However, when the perforation spacing increases to a certain value (the result of this work is about 14 m), the initiation pressure will not change. This study will be useful in guiding the design of programs in simultaneous fracturing.

Increasing the Productivity of Horizontal Wells Through Multistage Hydraulic Fracturing Using a Working Fluid Based on a New Biopolymer System

2021 ◽  
Author(s):  
Nikolay Mikhaylovich Migunov ◽  
Aleksey Dmitrievich Alekseev ◽  
Dinar Farvarovich Bukharov ◽  
Vadim Alexeevich Kuznetsov ◽  
Aleksandr Yuryevich Milkov ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Russian Federation ◽  
Oil Production ◽  
Horizontal Wells ◽  
Working Fluid ◽  
High Tech ◽  
Executive Order ◽  
Bazhenov Formation ◽  
Multistage Hydraulic Fracturing ◽  
The Russian Federation

Abstract According to the US Energy Agency (EIA), Russia is the world leader in terms of the volume of technically recoverable "tight oil" resources (U.S. Department of Energy, 2013). To convert them into commercial production, it is necessary to create cost-effective development technologies. For this purpose, a strategy has been adopted, which is implemented at the state level and one of the key elements of which is the development of the high-tech service market. In 2017, the Minister of Energy of the Russian Federation, in accordance with a government executive order (Government Executive Order of the Russian Federation, 2014), awarded the Gazprom Neft project on the creation of a complex of domestic technologies and high-tech equipment for developing the Bazhenov formation with the national status. It is implemented in several directions and covers a wide range of technologies required for the horizontal wells drilling and stimulating flows from them using multi-stage hydraulic fracturing (MS HF) methods. Within the framework of the technological experiment implemented at the Palyanovskaya area at the Krasnoleninskoye field by the Industrial Integration Center "Gazpromneft - Technological Partnerships" (a subsidiary of Gazprom Neft), from 2015 to 2020, 29 high-tech wells with different lengths of horizontal wellbore were constructed, and multistage hydraulic fracturing operations were performed with various designs. Upon results of 2020, it became possible to increase annual oil production from the Bazhenov formation by 78 % in comparison with up to 100,000 tons in 2019. The advancing of development technologies allowed the enterprise to decrease for more than twice the cost of the Bazhenov oil production from 30 thousand rubles per ton (69$/bbl) at the start of the project in 2015 to 13 thousand rubles (24$/bbl) in 2020. A significant contribution to the increase in production in 2020 was made by horizontal wells, where MS HF operations were carried out using an experimental process fluid, which is based on the modified Si Bioxan biopolymer. This article is devoted to the background of this experiment and the analysis of its results.

scholarly journals Modeling of multiple fractures growth during multistage hydraulic fracturing based on cell-based pseudo 3D model

2018 ◽  
Vol 193 ◽  
pp. 012075
Author(s):  
S A Budennyy ◽  
R N Nikitin ◽  
A A Erofeev ◽  
R M Sitdikov ◽  
G V Paderin
Keyword(s):  
Hydraulic Fracturing ◽  
3D Model ◽  
Multiple Fractures ◽  
Multistage Hydraulic Fracturing

Multistage Hydraulic Fracturing Campaign Learning Curve in a Tight Sandstone Reservoir, Offshore West Africa

2018 ◽  
Author(s):  
P. Sedda ◽  
S. Parziale ◽  
M. Giammancheri ◽  
L. Dal Forno ◽  
F. Ferdinandi ◽  
...  
Keyword(s):  
West Africa ◽  
Hydraulic Fracturing ◽  
Learning Curve ◽  
Tight Sandstone ◽  
Multistage Hydraulic Fracturing ◽  
Sandstone Reservoir
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