Fractured Basement and New Oil Plays Assessment

A large proportion of the world’s proven oil reserves have been found in reservoir rocks that are naturally fractured. These fields where natural fractures are present are important for production, a significant proportion being in basement settings. In north America alone, current and future fields in various types of fractured reservoirs are estimated to account for some 21 billion barrels of oil equivalent (BBOE). Basement reservoirs are a subset of naturally fractured reservoirs.

QPT has had extensive experience with Fractured Basement reservoirs

The Dong Sheng Pu Buried Hill reservoir located in Xin Min County, Liaoning Province is a fractured, metamorphic basement rock. It is an example of QPT’s experience in handling and optimizing production in Fractured Basement environment. The structural location of the Buried Hill reservoir is the centre of the Da Ming Tun Depression with a minimum burial depth of 2,600 m. Exploratory drilling began in October 1982 based on seismic data. In January 1983, Well 3, located above the crest of the Buried Hill, tested oil at a rate of 183.8 tons/day. By December 1987, there were 14 active producers and one observation well with cumulative volumes of oil and gas of 1,050,000 tons and 65,500,000 m3 respectively. Water injection was initiated in October 1986 through four injectors with a cumulative volume of 290,000 m3.

SUBSURFACE SPECIALIZED STUDIES

Highly Fractured Heterogeneous Basement

i) Seismic Image Analysis to Map Fractures Network
ii) Reservoir Characterization using Integrated Formation Evaluation
iii) Static Models – Integrated Structural Modeling & Seismic Attributes Analysis
iv) Detailed Fracture & Fault Analysis
v) Reservoir Dynamic Simulation
vi) New Well Placement Optimization
vii) Analysis of Oil Production Behaviour