Search
NEWS

Energies, Free Full-Text

By A Mystery Man Writer

Gas reservoirs discovered in the southern margin of the Junggar Basin generally have high temperatures (up to 172.22 °C) and high pressures (up to 171.74 MPa). If using the PVT laboratory to get the gas compressibility factor, data from the laboratory are so little that it will not satisfy the demands of reservoir engineering calculations. There are many empirical correlations for calculating the Z-factor; however, these correlations give large errors at high gas reservoir pressures. The errors in estimating the Z-factor will lead to large errors in estimating all the other gas properties such as gas formation volume factor, gas compressibility, and gas in place. In this paper, a new accurate Z-factor correlation has been developed based on PVT data by correcting the high-pressure part of the most commonly used Dranchuk-Purvis-Robinson Correlation. Multivariate nonlinear regression is used to establish the independent variable function of pseudo-critical temperatures and pressures. By comparing it with the PVT data, the DPR correlation is continuously corrected to be suitable for ultra-deep gas reservoirs with HTHP. The new correlation can be used to determine the Z-factor at any pressure range, especially for high pressures, and the error is less than 1% compared to the PVT data. Then, based on the corrected Z-factor, the Cullender-Smith method is used to calculate the bottom hole pressure in the middle of the reservoir. Finally, the Z-factor under reservoir conditions of well H2 is predicted and the Z-factor chart at different temperatures is provided.

Energies, Free Full-Text

Energies, Free Full-Text, rated speed

Energies, Free Full-Text

I Match Energy (all sizes) –

Energies, Free Full-Text

Energies, Free Full-Text, pengguna kilo kilo no mi

Energies, Free Full-Text

Energies, Free Full-Text, step up dc dc

Energies, Free Full-Text

Energies, Free Full-Text, ghg emissions

Energies, Free Full-Text

Carbon Free Energy Options Kootenai Electric Cooperative

Energies, Free Full-Text

Energies, Free Full-Text, ghg emissions

Energies, Free Full-Text

A Complete Guide To Build A Joe Cell, Orgone Energy 2012 : Free Download, Borrow, and Streaming : Internet Archive

Energies, Free Full-Text

Energies An Open Access Journal from MDPI

Energies, Free Full-Text

MIT Press's Direct to Open reaches annual funding goal, opens access to full list of 2024 monographs