Now showing items 1-6 of 6
On the extension of the model of matrix acid stimulation to different sandstones
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1976-07)
A model was developed for the acidization of various sandstone cores which successfully describes the flow and reaction in the porous media during acidization. A comparison of the experimental results of various investigators ...
Acidization--IV : Experimental correlations and techniques for the acidization of sandstone cores
(Elsevier, 1976)
The experimental variables that affect the acidization of sandstone cores in a permeameter are discussed. It was found that as HCl/HF acid mixtures are injected into porous sandstone cores a reaction front between selective ...
Annealing effects of polymers and their underlying molecular mechanisms
(Elsevier, 1976-04)
This paper indicates that changes in chain mobility, heat capacity, WAXS crystallinity, SAXS long period, SAXS peak intensity, specific volume and morphology as a function of increasing temperature, occur in three fairly ...
Strain-induced crystallization I. Limiting extents of strain-induced nuclei Previously presented at the ACS Symposium on Fiber and Yarn Professing, Philadelphia (April 9, 1975)
(Society of Plastics Engineers, Inc.Wiley Periodiocals, Inc., 1976-03)
This paper points out that interpretations from stress changes alone during oriented crystallization have led to widely different proposed chain conformations and consequently very different crystallization mechanisms for ...
Acidization--V : The prediction of the movement of acid and permeability fronts in sandstone
(Elsevier, 1976)
A new model has been developed which describes the acidization of sandstone cores. The results show that the reaction of hydrofloric acid with the dissolvable minerals occurs in a narrow zone which moves as a reaction front ...
Strain-induced crystallization II. Subsequent fibrillar-to-lamellar transformation Previously presented at the ACS Symposium on Fiber and Yarn Processing Philadelphia (April 9, 1975)
(Society of Plastics Engineers, Inc.Wiley Periodiocals, Inc., 1976-03)
Part II discusses numerous examples of a morphological fibrillar-to-lamellar transformation that has reportedly been observed in stretched polymers upon additional thermal treatment (or TIC), Stretched polymers containing ...