Utilizing NMR Mud Logging Technology To Measure Reservoir Fundamental Parameters in Well Site

Yingzhao Zheng, Dehui Wan, Muhammad Ayaz, Caiqin Ma

1School of Energy Resources, China University of Geosciences, Beijing, 100083, China 2Mud Logging International Department, Great wall drilling company, Beijing, 100101, China.
Beijing Winfield Petroleum Technology Company, Beijing, 100083, China.
Mud Logging International Department, Great wall drilling company, Beijing, 100101, China.

DOI: 10.4236/epe.2013.54B285                

Abstract

Nuclear Magnetic Resonance mud logging technology (NMR mud logging) is a new mud logging technology. Mainly applies the CPMG（Carr-Purcell-Meiboom-Gill）pulse sequence to measure transverse relaxation time (T₂) of the fluid. NMR mud logging can measure drill cutting, core and sidewall core in the well site, also according to the experiment results, the sample type and size has little effect to analysis result. Through NMR logging, we can obtain several petrophysical parameters such as total porosity, effective porosity, permeability, oil saturation, water saturation, movable fluid saturation, movable oil saturation, movable water saturation, irreducible fluid saturation, irreducible oil saturation, irreducible water saturation, pore size and distribution in rock samples, etc. NMR mud logging has been used nearly 10 years in China, Sudan, Kazakhstan, etc. it plays an important role in the interpretation and evaluation of reservoir and its fluids.

Keywords

NMR Mud Logging; Porosity; Oil Saturation; Reservoir Fluids; T2 Cutoff; Spectrum

Conflicts of Interest

The authors declare no conflicts of interest.

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