Damian Hryb - Academia.edu (original) (raw)

Papers by Damian Hryb

52nd U.S. Rock Mechanics/Geomechanics Symposium, Jun 17, 2018

49th U.S. Rock Mechanics/Geomechanics Symposium, Nov 13, 2015

Mature field redevelopment involves the choice and implementation of different extraction techniq... more Mature field redevelopment involves the choice and implementation of different extraction techniques. This issue becomes more complex when the producing section is composed of isolated multilayer reservoirs with long and different production history which necessitates precise mangement of injection and production rates layer by layer and well by well. Geological discontinuities (Faults, pinch outs) also need to be taken into account when considering the injection of fluids in a multi-layered reservoir. The present work, which involves a water flood, shows a method to define the contacted pore volume (CPV) evolution in time by dynamic simulation history matching, and thereby to determine the regions in each of the layers where changes in injection policy is justified. With the CPV defined at the end of the history match, the method allows an evaluation of the efficiency of the legacy secondary recovery scheme, and defines the corrective actions to improve it in each layer. This method is based on distribution of pore volume (PV) as function of water saturation i.e. PV(Sw) at each time before and after starting the injection in the reservoir. As a result, we can obtain the evolution of CPV since injection started, and then calculate the evolution of oil in place (OIP) in the CPV and compare this with total production of the layer considered, obtaining the efficiency of waterflooding layer by layer in different areas of the field. Extrapolating CPV(t) with the actual injection patterns allows an assement of CPV at the end of field concession, and gives us a base case forecast of future field behaviour. As conclusions we observe that, this method is an easy and fast tool to determine the contacted pore volume evolution, and the efficiency of waterflooding. Further this method gives an estimation of Ultimate Contacted Pore Volume (UCPV) with the actual (or improved) injection configurations on a regional basis which allows further opportunity to be identified. The integration of this information with the actual field condition facilitates optimization of the water injection pattern and improves waterflooding productivity throughout the reservoir extension.

Latin American Applied Research, Jun 1, 2009

− − −− − − − A thermal interaction model between a turbulent fluid flow and a solid was developed... more − − −− − − − A thermal interaction model between a turbulent fluid flow and a solid was developed. The heat exchange is modeled by means of a Newton cooling law where the convective heat transfer coefficient is calculated using thermal wall laws. The finite element method was employed to solve the conservation equations. The model gives the possibility that the fluid and solid meshes are not connected; this generates a great flexibility in meshing and in geometry modification. The domains coupling algorithm was verified using simple problems. Finally, the model developed was validated and applied successfully to the simulation of the fluid dynamic thermal behavior of hot dip galvanizing bath.

Journal of Petroleum Science and Engineering, Aug 1, 2019

• The use of traceable samarium-based proppants was confirmed by Monte Carlo simulations. • Reali... more • The use of traceable samarium-based proppants was confirmed by Monte Carlo simulations. • Realistic borehole-formation-tool models with and without proppants were studied. • A minimum samarium oxide concentration of 1.25 % wt. is needed to be detected.

One of the major uncertainties in the analysis of unconventional well productivity is the estimat... more One of the major uncertainties in the analysis of unconventional well productivity is the estimation of the hydraulic fracture height generated during stimulation operations. This study was carried out in a well located in the Neuquen Basin, Argentina with main focus on the development of unconventional shale oil. The strategy consisted in the application of two combined techniques based on different and independent physical principles for the estimation of the hydraulic fracture height. The initial technique consisted in the pumping of proppant which contains elements with great neutron absorption. Thereby, the presence of traced proppant is identified through the differences in the neutron absorption capacity before and after the stimulation at approximately 6 inches from the wellbore. The second technique is based on the characterization of the anisotropy on the shear wave obtained by the dipolar sonic curve in two perpendicular directions. This acquisition should be carried out before and after the stimulation and it is sensitive in the area close to the wellbore. (Between 5 and 40 in) Results from both techniques showed a reasonable good consistency in the results, thus allowing the validation of both methodologies. The results also allowed defining intervals that act as barriers of the hydraulic fracture vertical growth. This permit us the optimization of the fracture design in other wells, thus minimizing the vertical overlapping of the fractures and maximizing the connectivity of the stimulated interval in the well. In addition, traced proppant was confirmed close to the wellbore in several intervals that together represent approximately 60% of the pay which represents a 170 m. To improve completion efficiency, this information can be used to place hydraulic fracture stages and define clusters geometry. Finally, it could be determined that a set of factors allowed the control of the vertical growth of the hydraulic fracture with proppant in the proximity of the wellbore. The main control on hydraulic fracture height was the magnitude of the minimum horizontal stress. The presence of discontinuities in the rocks such as calcite veins volcanoclastic intervals and limestone beds may also play a role. These new data provide confidence on the current geomechanical model helping to optimize the upcoming stimulation operations in the area.

International Communications in Heat and Mass Transfer, May 1, 2009

Lagrangian and eulerian models for particle transport by a turbulent fluid phase are presented. I... more Lagrangian and eulerian models for particle transport by a turbulent fluid phase are presented. In both methods, particle distribution results from the action of applied forces (buoyancy, inertial, added mass and drag forces) and turbulent effects are shown. The carrier phase flow-which is solved by finite element method using a k-ε turbulence model-is assumed not to depend on the particles motion. In the lagrangian formulation the dynamic equation for the particles is solved. A discrete random walk model is used to account for the turbulent effects. In the eulerian formulation, the particle concentration is calculated from a convection-diffusion equation using the terminal particles velocity and turbulent diffusivity. Both models are compared to experimental measurements and analytical results; a good agreement is observed.

Proceedings of the 2020 Latin America Unconventional Resources Technology Conference

Proceedings of the 4th Unconventional Resources Technology Conference, 2016

All Days, 2014

This paper presents an operator's approach to optimize future well performance by fully integ... more This paper presents an operator's approach to optimize future well performance by fully integrating all the data captured in the Vaca Muerta shale. Based upon insight from the study, the operator needed to make more informed asset management decisions, understand the interaction between the shale and the hydraulic fracture network, and improve economics. Data were captured from several wells, both vertical and horizontal. The data incorporated into the study included fieldwide seismic data, as well as mineralogical, geomechanical, well plan, drilling, completion, microseismic monitoring, and production data from the wells.The project comprised one case history involving the hydraulic fracture stimulation treatment of a cluster of horizontal wells. Microseismic hydraulic fracture monitoring (HFM) was utilized to "track" the development of the hydraulic fractures in real time as they propagated throughout the formation. The stimulation activity from the well was monitore...

SPETT 2012 Energy Conference and Exhibition, 2012

This chapter summarizes and integrates some of the most relevant published results related to the... more This chapter summarizes and integrates some of the most relevant published results related to the geomechanics of the Vaca Muerta Formation and its relationship with structural geology, stratigraphy, and petrophysics. The Vaca Muerta unconventional play is overpressured in most parts of the Neuquen Basin. Direct measurements are not feasible because of the low permeability of these rocks. Indirect measurements used to assess the range of pore pressure derive from diagnostic fracture injection tests (DFIT) taken over several days, and the initial reservoir pressure estimated from production models of horizontal wells. The Neuquen Basin underwent several compressional tectonic episodes. The main direction of the maximum horizontal stress changed from northwest–southeast in the Middle Jurassic, to approximately east–west of present day, associated to the Andean tectonics. Maximum and minimum horizontal stress directions, a critical parameter to design horizontal wells, has been regiona...