Crisman Annual Report 2009 - Harold Vance Department of ...

More documents

Recommendations

Info

2009 SPE ATCE in New Orleans. A second paper (A Numerical Study of Microscale Flow Effects in Tight Gas and Shale Gas Reservoir Systems) concerning the micro- and nano-scale flow effects caused by extremely fine pore structure in shale was presented at the TOUGH Symposium at Lawrence Berkeley National Laboratory. Additionally, several other capabilities have been added to TAMSIM, though not yet rigorously validated. These include multiphase flow and multicomponent diffusion. Work on TAMSIM continues in collaboration with Dr. George Moridis. Significance The significance of the work to this point has been to provide clear visualization and diagnostic tools for identification of the complex flow regimes found near horizontal wells with multiple fractures in tight gas reservoirs, and to deliver insight into the effects of reservoir and completion parameters on the behavior of these profiles. Properly accounting for the flow regime effects of inter-fracture interference on production data will enable the engineer to constrain rate decline predictions. Crisman Annual Report 2009 21
Characterization of Rock Transport Properties in Tight Gas and Shale Objectives The objective of this work is to determine transport properties such as permeability, porosity, and fracture characteristics in very low permeability rocks such as tight gas sandstone and shale. Further, we would be characterizing stress-induced changes in permeability in these low permeability rocks. This would be done using the pulse permeameter and steady-state measurements using under triaxial stress. Generally, “Pressure Pulse Test” is recommended in tight gas and shale reservoirs instead of conventional “Steady State Permeability Test”. The “Pressure Pulse Permeameter” machine in Rock Mechanics Lab can be a good tool for determining rock properties. permeability/porosity check plugs to make sure the values are precise. After calibrations and validations, we will be ready to measure permeability/porosity of the tight core samples. Approach During this month and the last month, we focused on the accuracy of the transducers and found out that a part of the measured leakage rate came from the fluctuations in the outputs of the transducers. The downstream differential transducer had a larger rate of fluctuations. We tested the leakage rate in different system pressures using impermeable core plugs and determined that the leakage rates in upstream and downstream transducers are consistent, which means the leakage comes from a point which connects both sections. Accomplishments To reduce the data fluctuation in the downstream part, we changed the downstream transducer, then calibrated and tested again. The leakage rate in the downstream part decreased from 1.6 psi/hr to ~ 1.1 psi/hr. Then, since the shortest route that connects upstream and downstream sections to each other is the core holder, we inspected the core holder again and wrapped the outer diameter of the rubber sleeve inside the core holder with extra aluminum foil. It covered the torn parts of the previously wrapped foil, which had been generated due to shrinkage and extension of the rubber sleeve. With these changes made, we tested the leakage and the rates were now 0.3 psi/hr for upstream and 0.36 psi/hr for downstream, which are reasonable. Future Work Since the machine has had several changes and manipulations, for the next month we should calibrate the volumes and (if possible) test it with known Project Information 1.2.6 Transport Properties Characterization of Tight Gas Shales Contacts Ahmad Ghassemi 979.845.2206 ahmad.ghassemi@pe.tamu.edu Vahid Serajian CRISMAN INSTITUTE 22 Crisman Annual Report 2009
Page 1 and 2: Harold Vance Department of Petroleu
Page 3 and 4: Issue 3, February 2010 Stephen A. H
Page 5 and 6: Combustion Assisted Gravity Drainag
Page 7 and 8: 6 Crisman Annual Report 2009
Page 9 and 10: Summary The Crisman Institute has t
Page 11 and 12: Membership History The Crisman Inst
Page 13 and 14: 12 Crisman Annual Report 2009
Page 15 and 16: An Advisory System for Selecting Dr
Page 17 and 18: A procedure to measure the viscosit
Page 19 and 20: PRISE - Petroleum Resource Investig
Page 21: Gas Shales Simulation and Productio
Page 25 and 26: An Analytical Approach to Model Sha
Page 27 and 28: P90 P50 P10 Fig. 3. P10, P50 and P9
Page 29 and 30: Density distribution from heat tran
Page 31 and 32: Experimental and Simulation Modelin
Page 33 and 34: Fig. 1. Set up of displacement appa
Page 35 and 36: Study of Solvent-Based Emulsion Inj
Page 37 and 38: Investigation of Hybrid Steam-Solve
Page 39 and 40: Experimental Studies of Steam Injec
Page 41 and 42: Combustion Assisted Gravity Drainag
Page 43 and 44: Well Spacing and Infill Drilling in
Page 45 and 46: Experimental and Numerical Simulati
Page 47 and 48: Enhanced Oil Recovery of Viscous Oi
Page 49 and 50: Alternate Power and Energy Storage/
Page 51 and 52: Propagation of Induced Hydraulic Fr
Page 53 and 54: » Use forward modeling of wellbore
Page 55 and 56: Decision Matrix for Liquid Loading
Page 57 and 58: fractions involved, a detailed sens
Page 59 and 60: Transient Multiphase Sand Transport
Page 61 and 62: Carbonate Heterogeneity and Acid Fr
Page 63 and 64: Fracture Aperture Variation Caused
Page 65 and 66: that contained 12 wt% HCl showed th
Page 67 and 68: Evaluation of Polymer-Based In-Situ
Page 69 and 70: Modeling of Discrete Fracture Netwo
Page 71 and 72: Thermo-Poroelastic Finite Element A
Page 73 and 74:
Measurement and Correlation of Gas
Page 75 and 76:
The falling body viscometer is sele
Page 77 and 78:
Fracture permeability (md) 12 10 8
Page 79 and 80:
CO 2 Mobility Control using Cross-L
Page 81 and 82:
(a) Standard EnKF for permeability
Page 83 and 84:
Aquifer Management for CO 2 Sequest
Page 85 and 86:
Bibliography List of Theses and Dis
Page 87 and 88:
» Florence, Francois; Validation/E
Page 89 and 90:
» Diyashev, Ildar; Problems of Flu
Page 91 and 92:
» Freeman, C.M., Ilk, D., Moridis,
Page 93 and 94:
and Catalyst. Paper presented at th
Page 95:
Exhibition, San Antonio, Texas, 24-
show all

Crisman Annual Report 2009 - Harold Vance Department of ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?