PRESSURE ANALYSIS AND FLUID CONTACT PREDICTION FOR ALPHA RESERVOIR (A PARTIALLY APPRAISED FIELD) ONSHORE NIGER DELTA.

  • A Ogbamikhumi CENTER OF EXCELLENCE IN INTEGRATED PETROLEUM EXPLORATION AND EVALUATION STUDIES (IPEES), UNIVERSITY OF BENIN, BENIN CITY, EDO STATE. NIGERIA.
  • AH Akanzua-Adamczyk DEPARTMENT OF GEOLOGY, UNIVERSITY OF BENIN, BENIN CITY, EDO STATE. NIGERIA.
  • L Ahiwe CENTER OF EXCELLENCE IN INTEGRATED PETROLEUM EXPLORATION AND EVALUATION STUDIES (IPEES), UNIVERSITY OF BENIN, BENIN CITY, EDO STATE. NIGERIA.
Keywords: Gas-Down-To, Water-Up-To, Oil Rim Reservoir, Pressure Analysis, Fluid Content

Abstract

The study field is green, with limited well penetrations. The objective reservoir (Alpha Reservoir) is a relatively shallow one, with 6 wells penetration. Two of the wells are wet (Water-Up-To) while the rest penetrated hydrocarbon bearing intervals (Gas-Down-To). As pressure data was not acquired in the water leg of the reservoir, pressure gradient analysis was done with the field-wide hydrostatic profile for contact and fluid prediction. Also, an evaluation of the possibility of having an oil rim within the region of fluid-type uncertainty was carried out. The predicted results revealed that the objective reservoir has the potential of having oil rim of a possible gradient 0.20psi/ft., with a column height of less than or equal to 20ft. Such an oil column if present is deemed insignificant. Therefore, the reservoir can be developed as a non- associated gas reservoir with a predicted Gas-Water-Contact of 7529ftss.

 

http://dx.doi.org/10.4314/njt.v36i3.20

Published
2017-06-30
Section
Chemical, Industrial, Materials, Mechanical, Metallurgical, Petroleum & Production Engineering

Journal Identifiers


eISSN: 2467-8821
print ISSN: 0331-8443