The formation young’s modulus and textural attributes of the Axx-field from southern Niger delta, Nigeria

Abstract

This research was carried out to determine the formation brittleness and textural attributes of an Axx-Field in the Niger Delta Basin. Data available for this study were obtained from three wells (A11, A22 and A33). They were analyzed using Microsoft Excel after spurious values were removed. Two techniques (John Fuller and Plumb Bradford) were used to determine static young's modulus but only one is reported because after statistical analysis on both, the one reported was adequate for accurate outcomes although both approaches have low variance. The results indicates that the highest values of static and dynamic young's modulus are 2.05 x 1025N/m2 and 1.93 x 1010N/m2 respectively. The lowest values are 1.1 x 1024N/m2 and 8.5 x 109N/m2 respectively for well A11. The average values are 1.024 x 1025N/m2 and 5.25 x 1023N/m2 for this well. For well A22, the highest and lowest values of dynamic young’s modulus are 1.5848 x 1010N/m2 and 1.5726 x 1010N/m2 while those of static are correspondingly 1.47 x 1025N/m2 and 9.01 x 1014N/m2. Their average values are 1.5787 x 1010N/m2 and 7.35 x 1024N/m2 for dynamic and static young's moduli respectively. Also, for well A33, dynamic has the lowest value as 3.28 x 1010 N/m2; static has 8.36 x 1014N/m2 and their highest correspond to 2.04 x 1010N/m2 and 7.08 x 1025N/m2. The average value for this well are 2.66 x 1010N/m2 and 3.54 x 1025 N/m2 for dynamic and static respectively. The static Young's modulus results define the formation as brittle, whose environment is extremely poorly sorted, very fine skewed and very leptokurtic with low energy for well A11, very poorly sorted, fine skewed and platykurtic for well A22, extremely poorly sorted, very fine skewed and mesokurtic for well A33.