Abstract
Abstract
This paper aims to elucidate the utilization of Under-Balanced Coiled Tubing (UBCTD) technology in tight sandstones, employing an integrative approach incorporating Petrophysical, geophysical, and reservoir engineering data. The primary objective is to distinguish between high matrix permeability and natural fractures, focusing on a localized high permeability region subject to detailed analysis before implementing a UBCTD operation.
The integrative methodology examines various datasets, including log data, PLT results, seismic interpretation, well rates, and pressure transient analysis. This multifaceted approach enhances confidence in identifying the presence of natural fractures, especially in low impedance contrast tight and heterogeneous sandstones.
Predictive modelling of well results must be undertaken before UBCTD operation, involving multiple scenarios. Through the integrative approach and heightened confidence in recognizing natural fractures, UBCTD technology may be successfully applied, and the laterals are placed within high productivity zones. Thus resulting in prolific flow rates and will demonstrate the methodology's effectiveness.
The significance of this approach lies in its ability to address the challenges associated with producing from tight, heterogeneous sandstones prone to formation damage. This workflow facilitates the precise targeting of natural fractures using UBCTD. This innovative workflow presents a valuable contribution to the production methodology for tight, heterogeneous sandstones, offering a novel approach for successful UBCTD wells.