Successful Implementation of Horizontal Multi-Stage Fracturing Enhanced Gas Production in Heterogeneous & Tight Gas-Condensate Reservoirs: Case Studies

2012 ◽  
Author(s):  
Hamoud Ali Al-anazi ◽  
Dana Mahmoud Abdulbaqi ◽  
Ali Hussain Habbtar ◽  
Adnan Al-Kanaan
Keyword(s):  
Case Studies ◽  
Gas Production ◽  
Gas Condensate ◽  
Successful Implementation ◽  
Tight Gas ◽  
Gas Condensate Reservoirs ◽  
Multi Stage

scholarly journals Gas Production from Gas Condensate Reservoirs Using Sustainable Environmentally Friendly Chemicals

2019 ◽  
Vol 11 (10) ◽  
pp. 2838 ◽  
Author(s):  
Amjed M. Hassan ◽  
Mohamed A. Mahmoud ◽  
Abdulaziz A. Al-Majed ◽  
Dhafer Al-Shehri ◽  
Ayman R. Al-Nakhli ◽  
...  
Keyword(s):  
Thermochemical Treatment ◽  
Environmentally Friendly ◽  
Gas Production ◽  
Gas Condensate ◽  
Absolute Permeability ◽  
Tight Gas ◽  
Hydrocarbon Production ◽  
Gas Condensate Reservoirs ◽  
Tight Gas Reservoir ◽  
The Impact

Unconventional reservoirs have shown tremendous potential for energy supply for long-term applications. However, great challenges are associated with hydrocarbon production from these reservoirs. Recently, injection of thermochemical fluids has been introduced as a new environmentally friendly and cost-effective chemical for improving hydrocarbon production. This research aims to improve gas production from gas condensate reservoirs using environmentally friendly chemicals. Further, the impact of thermochemical treatment on changing the pore size distribution is studied. Several experiments were conducted, including chemical injection, routine core analysis, and nuclear magnetic resonance (NMR) measurements. The impact of thermochemical treatment in sustaining gas production from a tight gas reservoir was quantified. This study demonstrates that thermochemical treatment can create different types of fractures (single or multistaged fractures) based on the injection method. Thermochemical treatment can increase absolute permeability up to 500%, reduce capillary pressure by 57%, remove the accumulated liquids, and improve gas relative permeability by a factor of 1.2. The findings of this study can help to design a better thermochemical treatment for improving gas recovery. This study showed that thermochemical treatment is an effective method for sustaining gas production from tight gas reservoirs.

Case Study of Condensate Dropout Effect in Unconventional Gas/Condensate Reservoirs with Hydraulically Fractured Wells

2022 ◽  
Author(s):  
Ali H. Alsultan ◽  
Josef R. Shaoul ◽  
Jason Park ◽  
Pacelli L. J. Zitha
Keyword(s):  
Gas Production ◽  
Gas Condensate ◽  
Dew Point ◽  
Productivity Index ◽  
Large Reservoir ◽  
Unconventional Gas ◽  
Gas Condensate Reservoirs ◽  
Liquid Saturation ◽  
Reservoir Volume ◽  
Fracture Performance

Abstract Condensate banking is a major issue in the production operations of gas condensate reservoirs. Increase in liquid saturation in the near-wellbore zone due to pressure decline below dew point, decreases well deliverability and the produced condensate-gas ratio (CGR). This paper investigates the effects of condensate banking on the deliverability of hydraulically fractured wells producing from ultralow permeability (0.001 to 0.1 mD) gas condensate reservoirs. Cases where condensate dropout occurs over a large volume of the reservoir, not only near the fracture face, were examined by a detailed numerical reservoir simulation. A commercial compositional simulator with local grid refinement (LGR) around the fracture was used to quantify condensate dropout as a result of reservoir pressure decline and its impact on well productivity index (PI). The effects of gas production rate and reservoir permeability were investigated. Numerical simulation results showed a significant change in fluid compositions and relative permeability to gas over a large reservoir volume due to pressure decline during reservoir depletion. Results further illustrated the complications in understanding the PI evolution of hydraulically fractured wells in "unconventional" gas condensate reservoirs and illustrate how to correctly evaluate fracture performance in such a situation. The findings of our study and novel approach help to more accurately predict post-fracture performance. They provide a better understanding of the hydrocarbon phase change not only near the wellbore and fracture, but also deep in the reservoir, which is critical in unconventional gas condensate reservoirs. The optimization of both fracture spacing in horizontal wells and well spacing for vertical well developments can be achieved by improving the ability of production engineers to generate more realistic predictions of gas and condensate production over time.

CO Injection for Improved Recovery in Tight Gas Condensate Reservoirs

2020 ◽  
Author(s):  
Mahmoud El Morsy ◽  
Samad Ali ◽  
Marie Ann Giddins ◽  
Peter Fitch
Keyword(s):  
Gas Condensate ◽  
Tight Gas ◽  
Gas Condensate Reservoirs

Effects of Surface Acidity and Polarity of SiO2 Nanoparticles on the Foam Stabilization Applied to Natural Gas Flooding in Tight Gas-Condensate Reservoirs

2018 ◽  
Vol 32 (5) ◽  
pp. 5824-5833 ◽  
Author(s):  
Yira Hurtado ◽  
Cristian Beltrán ◽  
Richard D. Zabala ◽  
Sergio H. Lopera ◽  
Camilo A. Franco ◽  
...  
Keyword(s):  
Natural Gas ◽  
Surface Acidity ◽  
Sio2 Nanoparticles ◽  
Gas Condensate ◽  
Tight Gas ◽  
Gas Condensate Reservoirs ◽  
Foam Stabilization ◽  
Gas Flooding
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