Zobrazeno 1 - 10
of 45
pro vyhledávání: '"A.W. Coulter"'
Autor:
A.W. Coulter, Alfred Hassner
Publikováno v:
Steroids. 4:281-290
The unusual conversion of 16-oximino-5-androsten-3β-ol-17-one (I) to 5-androsten-3β, 17β-diol-16-one (III) with zinc acetic in acid is shown to proceed via the 16-amino-17-ketosteroid intermediate II. Deuterium labelling experiments were used to e
Publikováno v:
Journal of Petroleum Technology. 18:1291-1296
Abstract Use of high concentrations of hydrochloric acid in fracture acidizing treatments has solved the stimulation problems in many stubborn reservoirs and has improved results in many others. Treatments of this type were first designed for injecti
Publikováno v:
Phytochemistry. 2:145-150
Lithospermic acid from L. ruderale roots is a polyphenolic carboxylic acid with an empirical formula believed to be C 16 H 14 O 7 . The molecule has two 1,2,4-trisubstituted benzene rings, each containing o -dihydroxy groupings; and an olefinic group
Autor:
A.W. Coulter, Paul Talalay
Publikováno v:
Biochemical and Biophysical Research Communications. 29:413-417
Autor:
A.W. Coulter, H.O. McLeod
Publikováno v:
Journal of Petroleum Technology. 21:951-960
Pressure transient analyses of stimulation treatment pressure records Pressure transient analyses of stimulation treatment pressure records give formation permeability and show the condition of the formation around the wellbore both before and after
Publikováno v:
Society of Petroleum Engineers Journal. 19:267-269
SPEJ Forum articles are limited to 1,500 words including 250 words for each table and figure, or a maximum of two pages in SPEJ. A Forum article may present preliminary results or conclusions of an investigation that the author wishes to publish befo
Publikováno v:
Tetrahedron Letters. 3:759-761
Publikováno v:
All Days.
Abstract A new mathematical model has been developed which considers more of the variables encountered during fracture acidizing treatments than previous models. In particular the variables include, wellbore cooldown, temperature profile of fluid in
Publikováno v:
All Days.
Abstract Recent field studies indicate that iron may be a problem in acid stimulation, even in formations that do not contain iron minerals. A program was undertaken to identify the sources of iron that may be program was undertaken to identify the s
Publikováno v:
All Days.
American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. Abstract Improvements in leakoff control in deep penetrating fractures have been accomplished penetrating fractures have been accomplished by the use of viscous, nonreactive f