JPT, Journal of Petroleum Technology
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An Experimental Investigation of the S.P. and Resistivity Phenomena in Dirty Sands
JPT, Journal of Petroleum Technology - Tập 6 Số 02 - Trang 44-57 - 1954
Abstract The importance of the so-called "dirty sand" or "conductive solids"
problem in electric log interpretation was first stressed in a paper presented
in 1949. Since that time the problem has been generally recognized as a most
serious one. Several research papers bearing on the theory of the effects of
clay contaminants on reservoir rock resistivities have appeared. These papers,
while contr...
Abnormal Treating Pressures in Massive Hydraulic Fracturing Treatments
JPT, Journal of Petroleum Technology - Tập 40 Số 05 - Trang 633-642 - 1988
Summary Abnormal treating pressures were observed during massive hydraulic
fracturing (MHF) treatments in the Mesa Verde formation of the Piceance basin,
CO. Data from three widely separated wells and in several zones per well showed
a pressure increase during MHF treatments that we call "pressure growth." This
pressure growth was at least semipermanent. The elevated instantaneous shut-in
pressure...
Influence of Pore Geometry on Water-Oil Relative Permeability
JPT, Journal of Petroleum Technology - Tập 22 Số 10 - Trang 1199-1208 - 1970
Rock properties that control pore geometry can also affect the relative
permeability characteristics of a reservoir. If variations in rock types
permeability characteristics of a reservoir. If variations in rock types are
ignored, laboratory measurements for predicting fluid flow may be misleading; a
common binocular microscope can be helpful in detecting these important
variations. Introduction A...
A Mathematical Model of a Gas Kick
JPT, Journal of Petroleum Technology - Tập 20 Số 08 - Trang 888-898 - 1968
Abstract This study presents an analysis of annular backpressure variations
associated with controlled gas kicks and their pronounced erect on casing
strings and exposed underlying formations. A mathematical model describing the
volumetric behavior of an extraneous gas as it is transported from reservoir to
surface conditions under changing temperatures and pressures has been programmed
in a Kings...
Mud Design To Minimize Rock Impairment Due To Particle Invasion
JPT, Journal of Petroleum Technology - Tập 29 Số 05 - Trang 586-592 - 1977
Solids invasion and formation impairment can be minimized by adding bridging
materials to drilling muds. Measurement of size distributions of solids in the
muds along with calculations of rockpore sizes can be used to design competent
muds. Test results of a laboratory mud agree well with published results.
Introduction Although invasion and formation damage occur with all muds during
drilling, it...
An Overview of Formation Damage and Well Productivity in Oilfield Operations
JPT, Journal of Petroleum Technology - Tập 38 Số 02 - Trang 131-152 - 1986
Distinguished Author Series articles are general, descriptive representations
that summarize the state of the art in an area of technology by describing
recent developments for readers who are not specialists in the topics discussed.
Written by individuals recognized as experts in the area, these articles provide
key references to more definitive work and presentspecific details only to
illustrate...
Effects of Brine Concentration and Pressure Drop on Gypsum Scaling in Oil Wells
JPT, Journal of Petroleum Technology - Tập 20 Số 06 - Trang 559-564 - 1968
Abstract Gypsum scale is a problem in oil wells that produce from reservoirs
containing calcium sulfate. It becomes particularly troublesome in waterflood
operations where large volumes of water are being produced. The solubility of
gypsum or anhydrite in water increases with pressure due to a slight decrease in
total volume as the salt dissolves. Upon release of pressure a supersaturated
solution...
In-Situ Stresses: The Predominant Influence on Hydraulic Fracture Containment
JPT, Journal of Petroleum Technology - Tập 34 Số 03 - Trang 653-664 - 1982
Summary In-situ experiments, which are accessible by mineback, have been
conducted to determine the parameters that control hydraulic fracture
containment. These experiments demonstrate that a stress contrast between the
pay zone and a bounding layer is the most important factor controlling fracture
height. Material property interfaces are shown to have little effect.
Introduction Hydraulic fractu...
A Rapid Method of Predicting Width and Extent of Hydraulically Induced Fractures
JPT, Journal of Petroleum Technology - Tập 21 Số 12 - Trang 1571-1581 - 1969
With the design charts presented here, and nothing more elaborate than aslide
rule, it is possible to predict the dimensions of either a linearly or aradially
propagating, hydraulically induced fracture around a wellbore. Introduction
During the hydraulic fracturing treatment of an oil or gas well the
liquidpressure in the borehole is increased until tensile stress in the
surroundingrock exceeds t...
Effects of Pressure and Partial Water Saturation on Gas Permeability in Tight Sands: Experimental Results
JPT, Journal of Petroleum Technology - Tập 34 Số 04 - Trang 930-936 - 1982
Summary Effective permeability to gas with various degrees of brine saturation
has been measured in the laboratory for several very tight sandstones from the
Spirit River formation of Alberta, Canada. Gas permeability as low as 20 × 10 -9
darcy was measured successfully with a pulse-decay permeameter with nitrogen as
the mobile fluid. Results show that gas permeability depends very strongly on
the...
Tổng số: 70
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