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First law of thermodynamics

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Proceedings Papers

Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-316
... Abstract: Full nonlinear elasticity theory of a two-velocity continuum describing the propagation of elastic deformations in microfractured porous media is based on general physical principles: the first law of thermodynamics, the conservation laws, the kinematic relationships in the metric...
Journal Articles
J Pet Technol 68 (07): 14–15.
Paper Number: SPE-0716-0014-JPT
Published: 01 July 2016
..., Eric D. Beinhocker explained the evolution of economics, strangely enough, by reviewing the basic laws of thermodynamics. Economic theories were developed concurrently alongside the progress of laws of physics. Traditional economies were based on the first law of thermodynamics (energy is neither...
Proceedings Papers

Paper presented at the The Sixth ISOPE Pacific/Asia Offshore Mechanics Symposium, September 12–16, 2004
Paper Number: ISOPE-P-04-025
... for structure of every investigated material. It is proved that though concrete freeze-thaw process is a thermodynamic one, it is impossible to apply the first law of thermodynamics in explicit form for material freeze-thaw resistance. This study explains why it is impossible to use specific potential energy...
Proceedings Papers

Paper presented at the SPE Hydrocarbon Economics and Evaluation Symposium, March 26–28, 1995
Paper Number: SPE-30050-MS
... of oil and gas over the last 2 decades. (me oft-used equivalency circa 6 MCF=l bbl is based only on the first law of thermodynamics, has no correlation with economic values, and is fatally flawed by not recognizing the supreme second law of thermodynamics.) Table 3 shows the statistical characteristics...
Proceedings Papers

Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-445
... are and to assess the hazardous to the system. The paper is organized as follows: the first section briefly description the LMMHD-WEC system; then a dynamic function based on Newton s Second Law is given, from which the heat transfer models based on the first law of thermodynamics of the system are described...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, October 23–26, 2007
Paper Number: PSIG-0702
... parts: internal, kinetic, potential and flow energies. The combination of internal energy and flow work is termed "enthalpy". The changes in kinetic and potential energy are considered negligible in this analysis. From the first law of thermodynamics an energy balance between the inlet and outlet...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-015
... The transfer of heat is one of the fundamental processes involved with the first law of thermodynamics. The first law equation for a closed system, 8Q - 8W = dE (2.1 ) demonstrates the relationship between heat transfer, work transfer, and the energy of the system. Energy is a path independent property...
Proceedings Papers

Paper presented at the SPE Western Regional and Pacific Section AAPG Joint Meeting, March 29–April 2, 2008
Paper Number: SPE-108390-MS
... for prediction and evaluation of such type of gas wells. This paper fills the gap. Starting from the first law of thermodynamics and Darcy's law, the reservoir-horizontal wellbore cross-flow was modeled analytically in this study. Pressure and flow rate variations in the horizontal wellbore were formulated...
Proceedings Papers

Paper presented at the SPE Oil and Gas India Conference and Exhibition, April 9–11, 2019
Paper Number: SPE-194610-MS
..., which can be effectively done by insulating the inner side of the casing so that the annulus and fluid flowing within the tubing is isolated from exterior losses. According to the First law of Thermodynamics the fluid flowing within the tubing will experience reduction in thermal gradient. These loses...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 22–25, 1995
Paper Number: SPE-30792-MS
... Development The development of the proposed algorithm begins with the first law of Thermodynamics applied to a steady state process. (1) making the following assumptions: Isentropic process. There is not external work done. Variation of kinetic energy is negligible. Equation (1) can...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, October 22–23, 1981
Paper Number: PSIG-8106
... constant. However, as long as energy is conserved, there can be a transfer of energy among different energy forms. This energy transfer is defined by the first law of thermodynamics : any work which is performed on the system by external forces is equal to the heat absorbed by the system less the increase...
Proceedings Papers

Paper presented at the 43rd U.S. Rock Mechanics Symposium & 4th U.S. - Canada Rock Mechanics Symposium, June 28–July 1, 2009
Paper Number: ARMA-09-097
.../ft3) for better cutting removal. 4. The gas and liquid volumetric flow rate needs to be kept as low as possible to reduce the cost. 5. The aerated mud velocity should not be too high to avoid the wellbore erosion. From the first law of thermodynamics and neglecting the velocity change in a vertical...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 1976
Paper Number: OTC-2511-MS
... The efficiency of the energy source can be described as (Equation available in full paper) To determine each of these energy terms, the following analysis will be made, using the principles from the first law of thermodynamics. (Equation available in full paper) maximum obtainable energy...
Proceedings Papers

Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-348
... of the mechanical energy of plastic deformation not dissipated as heat goes into raising the internal energy of a metal. The energy balance associated with plastic deformation may be quantified by the First Law of Thermodynamics: U = W - Q (l) where 0 is the rate of change in the internal energy of the system, W...
Proceedings Papers

Paper presented at the The 26th U.S. Symposium on Rock Mechanics (USRMS), June 26–28, 1985
Paper Number: ARMA-85-0591-1
... the measureable parameters. From the first law of thermodynamics, the small change of the total energy dU is distributed between two small quantities of work W and heat Q such that dU = 6W + Q. (1) In a quasi-static process in which the temperature in a finite volume V tends to be uniform, and the pressure P...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1142
...-pressure evaporation based on the first law of thermodynamics, the second law of thermodynamics, the law of conservation of energy, and Gibbs free energy. In most previous studies of ORC cycle, the efficiency of the turbine was generally considered to be constant. In this study, the actual efficiency...
Book Chapter
Publisher: Society of Petroleum Engineers
Published: 01 January 2014
DOI: 10.2118/9781613993286-02
EISBN: 978-1-61399-885-4
... equation required to make the problem statement deterministic is the conservation of energy, or the first law of thermodynamics. The first law is based on our everyday observation that for any change of thermodynamic properties, total energy (which includes internal, potential, kinetic, heat, and work...
Proceedings Papers

Paper presented at the SPE Saudi Arabia Section Annual Technical Symposium and Exhibition, April 21–23, 2015
Paper Number: SPE-177993-MS
..., communication devices, heaters or pumps. The electricity can also be fed into existing power grids. The potential benefit includes reduction in field energy consumption and operating costs, energy conservation and environmental protection. Applying the first law of thermodynamics for this control volume...
Proceedings Papers

Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-221
... is assumed. The heat flow rate then is calculated as follows: ( ) /th initial water c c c cc cQ g T T dQ Q dt dq dQ m = = = (29) where the thermal conductivity thg is taken to be 10th ig S= W/degK. From the first thermodynamic law one may obtain the following relations vdu dq Pdv c dT dq Pdv...
Proceedings Papers

Paper presented at the SPE Asia Pacific Oil & Gas Conference and Exhibition, November 17–19, 2020
Paper Number: SPE-202385-MS
... of potential flow. This eliminates the Bernoulli kinetic energy term and represents an assumption restriction on the diffusion model. This paper stops short of the introduction of flow potential. First, the dynamic equation ( Eq. 6a ) is rearranged to eliminate common dimensional terms ( ΔY and ΔZ...

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