Structure contour map of the Pondera oil field, Montana

1952 ◽  
Author(s):  
Charles Edgar Erdmann ◽  
B.K. Koskinen
Keyword(s):  
Oil Field ◽  
Contour Map

SHALLOW RESISTIVITY SURVEY AT SOUTH ELTON, LOUISIANA

Geophysics ◽  
1939 ◽  
Vol 4 (4) ◽  
pp. 271-278
Author(s):  
E. E. Blondeau
Keyword(s):  
Direct Current ◽  
Deep Structure ◽  
Current Data ◽  
Oil Field ◽  
Current Electrode ◽  
Contour Map ◽  
Near Surface ◽  
Resistivity Survey ◽  
Direct Association ◽  
A Current

A direct current resistivity survey covering about one and one‐half townships adjacent to the South Elton oil field is described. The contour map based on data taken 100′ from a current electrode shows many near surface anomalies while that based on data taken 1000′ from a current electrode is comparatively uniform. Conclusions reached were: First, that Eltran and direct current data show good qualitative agreement; second, that the large observed variations in near surface resistivity can hardly be attributed to mineralization emanating upward over structure; and third, that the number of anomalies found is so great that their direct association with deep structure is highly improbable.

scholarly journals 2D Seismic Reflection Study of Mishrif and Yamama Formations in East Nasiriya Area, Southern Iraq

2021 ◽  
pp. 2603-2613
Author(s):  
Mohammed S. Faisal ◽  
Kamal K. Ali
Keyword(s):  
Seismic Data ◽  
Oil And Gas ◽  
Seismic Profile ◽  
Oil Field ◽  
Contour Map ◽  
Oil And Gas Exploration ◽  
Subsurface Geology ◽  
Depth Maps ◽  
Cretaceous Period ◽  
Southern Iraq

The structural division and stratigraphic estimation of the perceptible geological basin are the most important for oil and gas exploration. This study attempts to obtain subsurface geology in parts of east Nasiriya, southern Iraq using of seismic data and some adjacent well information for structural and stratigraphic interpretation. To achieve this goal, 2D seismic data in SEG-Y format were used with velocity and logging data. The seismic profile is then interpreted as a two-dimensional (time domain and depth domain) contour map, which is  represented  as a real subsurface geology. Reflectors from the Mishrif and Yamama Formations (Cretaceous period) were detected. According to the structural interpretation of the selected reflectors, TWT maps of the horizon were prepared, and  depth maps were drawn, which show some noses structures in the study area. The seismic interpretation in this area confirmed the existence of certain stratigraphic features in the studied strata. Some distribution mounds and flat spots were also observed which similar to the characteristics of the Nasiriya oil field stratigraphic features that are the considered as hydrocarbon indicators.

GEOPHYSICAL HISTORY OF THE NORTH COLES LEVEE OIL FIELD, KERN COUNTY, CALIFORNIA

Geophysics ◽  
1947 ◽  
Vol 12 (3) ◽  
pp. 406-413
Author(s):  
Joseph LeConte
Keyword(s):  
Field Work ◽  
Oil Field ◽  
Kern County ◽  
Reasonable Accuracy ◽  
Geophysical Field ◽  
Contour Map ◽  
The North ◽  
Reflection Data ◽  
History Of

The North Coles Levee oil field was discovered in November 1938. The location for the discovery well was based on data obtained from a reflection seismograph survey run early in the same year. A contour map, based on these reflection data, was prepared after several months of geophysical field work and interpretation. This map outlined the structure with reasonable accuracy as shown by comparing it with the present subsurface contour map constructed from electric‐log correlations in over one hundred wells which have been drilled in the field as of December 1946.

GEOPHYSICAL EXPLORATION AND DISCOVERY OF THE BUDAFAPUSZTA (LISPE) OIL FIELD IN HUNGARY

Geophysics ◽  
1947 ◽  
Vol 12 (2) ◽  
pp. 208-220 ◽  
Author(s):  
D. C. Skeels ◽  
Raoul Vajk
Keyword(s):  
Cross Section ◽  
Torsion Balance ◽  
Surface Feature ◽  
Oil Field ◽  
Contour Map ◽  
Small Surface ◽  
Geophysical Exploration ◽  
Topographical Map ◽  
Geological Map ◽  
Geographical Position

Interest was first attracted to the Budafapuszta area by its geographical position on the eastward projection of a known surface anticline, which had produced small quantities of oil at Peklenicza and Szelnicza. A test was located in 1920 on a small surface feature, and completed in 1923 as a dry hole. In 1934 a torsion balance survey was made by Eurogasco, a subsidiary of the Standard Oil Co. (N. J.) which indicated a dome with its crest 1500 m. north of the dry hole. A reflection survey verified the presence of the structure. The discovery well was located by the torsion balance data, and completed as a producer in 1937. A gravity meter survey made after the first two producers had been drilled, gave further information on the structure and assisted in the development of the field. This exploration history shows that a properly made torsion balance survey may be very efficient and economical even in hilly country. A geological map of part of the Szelnicza‐Peklenicza anticline, a topographical map, torsion balance, seismograph and gravity meter maps, a seismograph cross section and a subsurface contour map of the Budafapuszta structure are submitted.

scholarly journals Tracking of Oil Water Contact in a Barail Main Reservoir

2020 ◽  
Vol 4 (3) ◽  
pp. 1-6
Author(s):  
Bordoloi R
Keyword(s):  
Time Frame ◽  
Oil Field ◽  
Fluid Distribution ◽  
Sweep Efficiency ◽  
Reservoir Properties ◽  
Water Contact ◽  
Contour Map ◽  
Transition Zones ◽  
Open Hole ◽  
Oil Water

To supplement the current understanding of the reservoir and also to increase the confidence level in decision making, an understanding in the variation of Oil Water Contact is very much important. In this paper, a study of an integrated and efficient methodology for establishment of complex Oil Water Contacts in Barail Main Sand (water drive reservoir) for a part of one oilfield of Upper Assam Basin has been discussed. The Barail Formation which is the main producing reservoir exhibits unique behaviour in terms of fluid distribution. The aim of the study is to map the movement of Oil Water Contact with respect to time and production in the study area. The study is mainly based on the structural contour map drawn based on the open hole log data of drilled wells in different time frame throughout the development of the study area. Using Oil Field Management software a cross section had been prepared taking Oil Water Contact as base among the selected wells to track its trend in these wells of the study area. The present study shows that Oil Water Contact is disturbed upon the start of production and sensitive to the rate and volume of withdrawal from localized area. Aquifer is very active and vertical sweep efficiency in the reservoir is very good due to its reservoir properties which resulted a small transition zones as it is evident from the open hole logs of the wells drilled in different time span. The study also shows that as a result of the thinning of oil column and sand incursion owing to the high drawdown in the study area, the tracking of movement of Oil Water Contact is found to be very important.

Photographic Equidensitometry of High Voltage Electron Images of Thick Noncrystalline Materials

1972 ◽  
Vol 30 ◽  
pp. 594-595
Author(s):  
Keinosuke Kobayashi
Keyword(s):  
High Voltage ◽  
Linear Response ◽  
Thickness Distribution ◽  
Contour Map ◽  
Mass Thickness ◽  
Voltage Electron ◽  
High Voltage Electron ◽  
Homogeneous Particle ◽  
Photographic Emulsions ◽  
Logarithmic Relation

Equidensitometry as developed by E. Lau and W. Krug has been little used in the analysis of ordinary electron photomicrographs, yet its application to the high voltage electron images proves merits of this procedure. Proper sets (families) of equidensities as shown in the next page are able to reveal the contour map of mass thickness distribution in thick noncrystalline specimens. The change in density of the electron micrograph is directly related to the mass thickness of corresponding area in the specimen, because of the linear response of photographic emulsions to electrons and the logarithmic relation between electron opacity and mass thickness of amorphous object.This linearity is verified by equidensitometry of a spherical solid object as shown in Fig. 1a. The object is a large (1 μ) homogeneous particle of polystyrene. Fig. 1b is a composite print of three equidensities of the 1st order prepared from Fig. 1a.

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