Salt Block II: description and results

Hohlfelder, J.J.

doi:10.2172/5277822

Cited by 8 publications

(11 citation statements)

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“…A factor neglected in the model that would tend to reduce the predicted peak pressure is the presence of a free surface about 17 cm above the point of measurement (i.e., the material did not undergo strictly plane strain deformation). In the second experiment a heater was inserted in a freely draining borehole in a large annular block of polycrystalline halite, and the flux of fluid into the hole was measured [Hohlfelder, 1980]. Because the entire block was unconfined, it can be argued that the mean total stress was everywhere small.…”

Section: The Complete Set Of Governing Equations Is Comprised Of Thementioning

confidence: 99%

Thermoelastic response of fluid‐saturated porous rock

McTigue¹

1986

J. Geophys. Res.

440

258

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A linear theory for fluid‐saturated, porous, thermoelastic media is developed. The theory allows for compressibility and thermal expansion of both the fluid and solid constituents. A general solution scheme is presented, in which a diffusion equation with a temperature‐dependent source term governs a combination of the mean total stress and the fluid pore pressure. In certain special cases, this reduces to a diffusion equation for the pressure alone. In addition, when convective heat transfer and thermoelastic coupling can be neglected, the temperature field can be determined independently, and the source term in the pressure equation is known. Drained and undrained limits are identified, in which fluid flow plays no role in the deformation. In the drained case, the medium behaves as a simple thermoelastic body with the properties of the porous skeleton with no fluid present. In the undrained limit, the fluid is trapped in the pores, and the material responds as a thermoelastic body with effective compressibility and thermal expansivity determined in part by the fluid properties. The theory is further specialized to one‐dimensional deformation, and several illustrative problems are solved. In particular, the heating of a half space is explored for constant temperature and constant flux boundary conditions on the thermal field, and for drained (zero pressure) and impermeable (zero flux) conditions on the fluid pressure field. The behavior of these solutions depends critically upon the ratio of the fluid and thermal diffusivities, with very large and very small values of this parameter corresponding to drained and undrained responses, respectively.

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Section: The Complete Set Of Governing Equations Is Comprised Of Thementioning

confidence: 99%

Thermoelastic response of fluid‐saturated porous rock

McTigue¹

1986

J. Geophys. Res.

440

258

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“…Jenks (1979) proposed the use of this equation for both intergranular and intragranular flow based on the experimental observation that inclusions seem to become trapped at intercrystalline boundaries, thereby slowing the rate of brine migration to less than that predicted by the Jenks equation. Claiborne et al (1980) applied the Jenks equation to the overall brine migration problem, including both intracrystalline and intercrystalline flow, and attempted to validate their code with Salt Block II data (Hohlfelder, 1980). The resulting code, called MIGRAIN, modeled the data reasonably well.…”

Section: 0 the Brine Migration Phenomenonmentioning

confidence: 99%

“…A preliminary validation was made with Salt Block II brine migration data (Hohlfelder, 1980). The Salt Block II experiment (Hohlfelder, 1980) was a brine migration study performed on a cylindrical salt sample from bedded salt in southeastern New Mexico. The cylinder was 1 m high and 1 m in diameter, and had a borehole along its axis that was roughly 0,8 m long and 0.13 m in diameter.…”

Section: A3 Preliminary Validationmentioning

confidence: 99%

Expected brine movement at potential nuclear waste repository salt sites

McCauley¹,

Raines²

1987

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The BRINEMIG brine migration code was used to predict rates and quantities of brine migration to a waste package'.emplaced in a high-level nuclear waste repository in salt. The BRINEMIG code is an explicit timemarching finite-difference code which solves a mass balance equation and uses the Jenks equation to predict velocities of brine migration. Predictions were made for the seven potentially acceptable salt sites under consideration as locations for the first U.S. high-level nuclear waste repository. Predicted total quantities of accumulated brine were on the order of 1 m^ brine per waste package or less. In general, less brine accumulation is expected at domal salt sites because of the lower initial moisture contents relative to bedded salt sites. Also, less total accumulation of brine is predicted for spent fuel than for commercial high-level waste because of the lower temperatures generated by spent fuel.

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“…Both open and closed cycles have been used. I n the open cycle(Krause, 1983;Hohlfelder, 1979), a supply o f d r y gas, u s u a l l y nitrogen d r i e d by a desiccant canister, i s passed through the borehole a t a c o n t r o l l e d rate, the moisture i s collected, and the gas i s exhausted. This system has the disadvantage t h a t any a d d i t i o n a l gases produced i n the experiment are d i l u t e d and c a r r i e d away.the exhausted gas can c a r r y away small amounts o f untrapped moisture which i s n o t measured.…”

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confidence: 99%

Brine migration test for Asse Mine, Federal Republic of Germany: final test plan

1983

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Salt Block II: description and results

Cited by 8 publications

References 0 publications

Thermoelastic response of fluid‐saturated porous rock

Thermoelastic response of fluid‐saturated porous rock

Expected brine movement at potential nuclear waste repository salt sites

Brine migration test for Asse Mine, Federal Republic of Germany: final test plan

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