Experimental Study on Gas Slippage of Tight Gas Sands in Kirthar Fold Belt Sindh, Pakistan
Journal Title: Mehran University Research Journal of Engineering and Technology - Year 2017, Vol 36, Issue 3
Abstract
The laboratory experiments on samples from Kirthar fold belt of lower Indus basin Sindh Pakistan were carried out to investigate the effect of gas slippage under varying conditions of pore pressures and overburden stress. The samples were dried in an oven at temperature of 600C and were randomly selected for measurement of permeability and porosity. Permeability was measured using nitrogen gas, while the porosity measurements were made using helium gas expansion porosimeter. The bulk volume was determined by measuring sample diameter and length with caliper. The permeability results suggest that gas slippage increases as if low pore pressures are used, which leads to higher measured permeability than intrinsic permeability of samples. An attempt was also made to estimate the permeability using existing correlations and found that there is large scatter in predicted permeability and measured data. This large amount of scatter in the predicted permeability values concludes that unless absolutely necessary, such correlations should not be used where accurate absolute permeability values are needed. Moreover, the permeability and porosity were plotted together to develop a relation between two properties; the power law fitting of the data well explains the relation between permeability and effective porosity.
Authors and Affiliations
Aftab Ahmed Mahesar, Abdul Majeed Shar, Khalil Rehman Memon, Hafeez-Ur-Rehman Memon, Shahzad Ali Baladi
Keywords
Related Articles
- EP ID EP207730
- DOI 10.22581/muet1982.1703.26
- Views 85
- Downloads 0
Dual Band Slotted Printed Circular Patch Antenna With Superstrate and EBG Structure for 5G Applications
Slotted circular printed layered patch antenna is designed, simulated and fabricated for 5G (Fifth Generation) wireless communication applications. The antenna consists of slots in the main radiating circular patch eleme...
On (Non) Applicability of a Mode-Truncation of a Damped Traveling String
This study investigates a linear homogeneous initial-boundary value problem for a traveling string under linear viscous damping. The string is assumed to be traveling with constant speed, while it is fixed at both ends....
On the Energetics of a Damped Beam-Like Equation for Different Boundary Conditions
In this paper, the energy estimates for a damped linear homogeneous beam-like equation will be considered. The energy estimates will be studied for different BCs (Boundary Conditions) for the axially moving continuum. Th...
Comparative Study of Solar Inactivation of Total Coliforms through Transparent Plastic Bottles and Fabricated Disinfection Setup
The water is disinfected through different techniques commonly used at domestic level, including boiling, chlorination, UV (Ultraviolet) disinfection, etc. These methods require extensive amount of chemicals, energy and...
Image Quality Assessment using Image Details in Frequency Domain
This research proposes a RR (Reduced Reference) DIQAM (Detailed Image Quality Assessment Meter) for DCT (Discrete Cosine Transform) based compressed images. DCT technique divides image in sub blocks to achieve image comp...