The progress of existing geophysical techniques for the last years led to a wider scope problems resolved using this set tools. tools allow tackling pivotal tasks such as study lithology in geological section, correlation, evaluation saturation, porosity, permeability, and clay fraction, outlining oil-gas water-saturated layers. Complications emerging while resolving these directly depend on pe...

The substantial interference of the tight reservoir's capillary pressure on relative permeability measurement can significantly diminish prediction accuracy oilfield production. This study established an innovative method to eliminate effect calculation by combining modified numerical simulation model and Genetic Algorithm. Steady-state measurements were conducted core sample (0.0321mD) obtain ...

Reservoir permeability is a critical parameter for characterization of the hydrocarbon reservoirs. In fact, determination of permeability is a crucial task in reserve estimation, production and development. Traditional methods for permeability prediction are well log and core data analysis which are very expensive and time-consuming. Well log data is an alternative approach for prediction of pe...

Two phase flow and horizontal well completion pose additional challenges for rate-transient analysis (RTA) techniques in under-saturated coal seam gas (CSG) reservoirs. To better obtain reservoir parameters, a practical workflow the two RTA technique is presented to extract information by of production data an CSG reservoir. This includes flowing material balance (FMB) improved form (water + ga...

We describe the successful application of a new method to estimate permeability and permeability anisotropy from transient measurements of pressure acquired with a wireline straddle-packer formation tester. Unlike standard algorithms used for the interpretation of formation-tester measurements, the method developed in this paper incorporates the physics of two-phase immiscible flow as well as t...

A successful cross-linked polymer flooding has been implemented in JD reservoir, an ordinary heavy oil reservoir with high permeability zones. For all that, there are still significant volumes of continuous oil remaining in place, which can not be easily extracted due to stronger vertical heterogeneity. Considering selective plugging feature, polymer enhanced foam (PEF) flooding was taken as fo...

Low-permeability reservoirs, especially ultralow-permeability usually show a problem of ineffective water injection which leads to low pressure with high injection-production ratio. It is urgent determine the direction and proportion injection, so as guide adjustment development. Based on theory percolation mechanics combined modern well test analysis method, determination method effective rati...