On: “OIL FIELDS AND AEROMAGNETIC ANOMALIES,” BY NELSON C. STEENLAND; “INSTRUMENT DETAILS AND APPLICATIONS OF A NEW AIRBORNE MAGNETOMETER,” BY HOMER JENSEN; AND “SOME RESULTS OF AEROMAGNETIC SURVEYING WITH A DIGITAL CESIUM VAPOR MAGNETOMETER” BY RAOUL I. GIRET (GEOPHYSICS, OCTOBER 1965)

Geophysics ◽  
1966 ◽  
Vol 31 (4) ◽  
pp. 824-826 ◽  
Author(s):  
William C. Kellogo
Keyword(s):  
High Sensitivity ◽  
Oil Fields ◽  
Petroleum Exploration ◽  
Cesium Vapor ◽  
Aeromagnetic Anomalies ◽  
Magnetic Methods

Three articles appearing in the October 1965 edition of Geophysics, which was devoted to magnetic methods, deserve comment. These are papers by Steenland, Jensen, and Giret. Perhaps the following remarks will lead to better understanding of certain concepts in aerial magnetic surveying. All three authors discuss (and presumably advocate) the use of “high sensitivity magnetometers”. This advocation has considerable merit in certain instances of petroleum exploration. However, each paper has certain oversights or omissions to which I will draw attention. I will also discuss certain other related subjects which seem pertinent.

Reply by author to discussion by William C. Kellogg

Geophysics ◽  
1966 ◽  
Vol 31 (4) ◽  
pp. 826-826
Author(s):  
Nelson C. Steenland
Keyword(s):  
High Sensitivity ◽  
Oil Fields ◽  
Aeromagnetic Anomalies ◽  
Geophysical Exploration ◽  
New Frontier

Those of us engaged in the pursuit of “high sensitivity” aeromagnetics are fully aware of, undoubtedly most aware of, the problems in its development. Some of these appear in Mr. Kellogg’s letter of 18 March 1966. It should be equally obvious that the advantages outweigh the disadvantages. Solutions to the problems Mr. Kellogg describes are being sought rather than simply accepting them as inalterable. “Oil Fields and Aeromagnetic Anomalies” made no attempt to describe these solutions, but set forth the problem as a new frontier in geophysical exploration.

THE SIGNIFICANCE OF SURFACE INDICATIONS OF PETROLEUM

1971 ◽  
Vol 11 (1) ◽  
pp. 126
Author(s):  
C. P. Meakin
Keyword(s):  
Gas Chromatography ◽  
Oil And Gas ◽  
Oil Fields ◽  
Petroleum Exploration ◽  
Hydrocarbon Gases ◽  
Geochemical Prospecting ◽  
Petroleum Accumulation ◽  
Petroleum Field ◽  
Gaseous Hydrocarbons ◽  
Gas Seeps

Seeps are of interest to the petroleum geologist because:—they indicate a section capable of producing hydrocarbons, and very often are related to a petroleum accumulation, andmany of the Important oil-producing regions were discovered by surface indications of petroleum.There are five main types of seeps:- those emerging from homoclinal beds exposed at the surface; those associated with beds in which the oil was formed; those arising from definite large petroleum accumulations, either bared by erosion, or ruptured by faulting; those emerging at an unconformity; and those associated with intrusions. These types of seeps are associated with, and have led to the discovery of many major oil fields throughout the world.The reports of oil and gas seeps in Australia, however, are only meagre. This may be because:—of a lack of exploration and documentation,the basins are a type that do not have the conditions necessary to produce seeps,the seeps that do exist are unrecognized. For instance, even large gas seeps may pass unnoticed in dry areas,of a lack of petroleum.The detection of the gaseous hydrocarbons, methane, ethane, propane and the butanes, in soils by gas chromatography could aid petroleum exploration because:—it would enable the detection of gas seeps over a potential petroleum field that would otherwise remain undetected, andeven for small quantities of hydrocarbon gases, low ratios of methane to higher hydrocarbons indicate a petroliferous origin.This is the technique of geochemical prospecting. It is based on three assumptions:—It must be possible for the hydrocarbons to migrate to the surface.The concentration of migrating hydrocarbons should not be altered by chemical reaction, bacteria, or hydrocarbons derived from another source.An anomalous hydrocarbon concentration at the surface can be correlated with a petroleum deposit.A search of the literature shows that, on the whole, these assumptions are correct. It would therefore appear that geochemical prospecting, particularly when used in conjunction with geological and geophysical work, can be useful for locating petroleum deposits.

AEROMAGNETICS

Geophysics ◽  
1964 ◽  
Vol 29 (4) ◽  
pp. 482-516 ◽  
Author(s):  
M. S. Reford ◽  
J. S. Sumner
Keyword(s):  
Upper Mantle ◽  
Profile Analysis ◽  
Petroleum Exploration ◽  
Major Step ◽  
Metastable Helium ◽  
The Past ◽  
Magnetic Methods ◽  
Data Compilation ◽  
Proton Precession Magnetometer ◽  
New Instruments

The aeromagnetic method of geophysical surveying has been established in less than two decades as a powerful method in mining and petroleum exploration. Many economically important discoveries can either directly or indirectly be credited to the aeromagnetometer. Magnetic methods are most important in their assistance to geological reconnaissance and mapping. Also, deep crustal and upper‐mantle studies can be made from results. New instruments, the spin‐precession magnetometers, have come into being in the past five years. Included are the proton‐precession magnetometer, the alkali‐vapor rubidium and cesium instruments, and the metastable‐helium magnetometer. All of these devices have airborne capabilities, and their future use is destined to increase. Modern navigational and interpretational techniques have improved the usefulness of aeromagnetic surveying. Diurnal effects are corrected for and their behavior is becoming understood. Data compilation, the major step in the entire process between measurement and interpretation, is an involved routine, but can be automated with the aid of Doppler navigation and statistical techniques. Interpretative systems may be divided into qualitative inspection, profile analysis, and map methods. Numerous schemes have been proposed for analytic purposes and the principal methods are reviewed. Although much of the world has been covered by surveys, the program seems less than half done. With more emphasis on detailed surveys, comprehensive interpretation, and sensitive instruments, the future of aeromagnetics seems bright.

Design and Implementation of Digital Oilfield

2013 ◽  
Vol 427-429 ◽  
pp. 2285-2288
Author(s):  
Xiao Hong Xu ◽  
Hu Tian ◽  
Ji Lin Fu ◽  
Zhi Hua Sun
Keyword(s):  
Oil Fields ◽  
Petroleum Exploration ◽  
Operating Costs ◽  
Design And Implementation ◽  
Exploration And Production ◽  
The Common ◽  
Common Problems ◽  
Feasible Solutions ◽  
Digital Oilfield ◽  
Oil Gas

Currently, all the global petroleum exploration and production companies are facing the pressure of lowing operating costs and improving labor productivity, now the emergence of the digital oilfield brings hope to these companies. This paper expounds the difficulties that the domestic digital oilfield encountered in the design of construction, and combining with the actual need of the oil fields in the development of oil-gas exploration, especially discusses the common problems in the construction of current digital oilfield and analyzes the existing oilfield technology and the development needs, finally, it put forwards feasible solutions.

The Research of Oil Fields Heterogeneous Data Management Technology

2014 ◽  
Vol 915-916 ◽  
pp. 1397-1400
Author(s):  
Bing Li ◽  
Yon Gan Wang ◽  
Ya Tian Gao
Keyword(s):  
Data Management ◽  
Data Model ◽  
Heterogeneous Data ◽  
Oil Fields ◽  
Petroleum Exploration ◽  
Data Types ◽  
Data Interchange ◽  
Management Technology ◽  
Model Foundation ◽  
Petroleum Field

With the continuous development of petroleum exploration technology and exploitation business, the data types involved in the petroleum field are getting more complicated and richer, so a lot of heterogeneous data types emerged, data interchange can not be achieved directly among them. In this paper, the integration middle framework of heterogeneous data types is built based on XML, to realize the transition and integration of relational data and XML data, and to provide support for the data sharing and application among data model. Foundation item .The project of youth fund of Northeast Petroleum University (The research of XML heterogeneous data management technology applied in oilfield management)

RECENT GEOLOGICAL AND GEOPHYSICAL RESULTS IN THE NORTHEASTERN CANNING BASIN

1975 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
M. F. Drew ◽  
G. R. Evans
Keyword(s):  
High Sensitivity ◽  
Structural Features ◽  
Petroleum Exploration ◽  
Seismic Exploration ◽  
Structural Elements ◽  
Seismic Surveys ◽  
Canning Basin ◽  
Reflection Seismic ◽  
Magnetic Basement ◽  
Southern Flank

The exploration programme conducted in Exploration Permits 58 and 59 in the northeastern Canning Basin during the past three years has clarified regional structural and stratigraphic relationships. Interpretation of the combined results of field geological, high sensitivity aeromagnetic and reflection seismic surveys has delineated five major structural elements, some previously unrecognised. These are, from north to south, the Billiluna Shelf, the Betty Terrace, the Fitzroy Trough, the Crossland Platform and the Helena Platform. Sedimentary rocks from Proterozoic to Mesozoic age occur in the permits. The Phanerozoic rocks range in thickness from in excess of 15000 m in the Fitzroy Trough to a veneer of probably less than 1000 m over the Billiluna Shelf. On the Crossland Platform and the Helena Platform, up to 4000 m of Lower and Middle Palaeozoic rocks overlain by up to 1500 m of Upper Palaeozoic sediments are interpreted to be present.Whilst no wells have been drilled within the area, results of exploratory holes in adjoining permits have been used to refine the interpretations presented in this paper. The principal stratigraphic features of interest to petroleum exploration are a possible Devonian reef trend located on the junction of the Crossland and Helena Platforms and subdued structural features caused by halokinesis on the Helena Platform.Two major geological conclusions were drawn from the exploration programme to date. One is that the age of the formation of the Fitzroy Trough, at least in this part of the Canning Basin, is younger than previously postulated. The other is the presence in the northeastern part of the Canning Basin of a Proterozoic infrabasin with depths to magnetic basement comparable with measured outcrop thicknesses on the southern flank of the Kimberley Block.Future exploration plans for the region call for further seismic exploration and the drilling of medium depth wildcat tests to investigate the hydrocarbon potential of the region.

The Improvement of Data Acquisition System in Computerized Well Logging Equipment

2014 ◽  
Vol 1003 ◽  
pp. 188-192
Author(s):  
Gang Li ◽  
He Ping Pan ◽  
Si Nan Fang
Keyword(s):  
Data Acquisition ◽  
Data Acquisition System ◽  
Well Logging ◽  
Oil Fields ◽  
Host Computer ◽  
Petroleum Exploration ◽  
Acquisition System ◽  
The Core ◽  
Exploration And Production ◽  
Fpga Chip

Computerized well logging equipment plays an important role in petroleum exploration and production, and data acquisition system is the core of it. In order to improve the acquisition systems which are used in some oil fields in recent years, a new design of data acquisition system is introduced. The ARM embedded chip and the FPGA chip are the kernel chips of the data acquisition system, and the Ethernet is the communication medium between the cards of the data acquisition system and the host computer of the numerical controlled well logging system. This data acquisition system has more integrated level and communication speed higher than the others of same kind.

Tests of Australian aerial radiometric data for use in petroleum reconnaissance

Geophysics ◽  
1994 ◽  
Vol 59 (3) ◽  
pp. 411-419 ◽  
Author(s):  
Donald F. Saunders ◽  
J. F. Branch ◽  
C. K. Thompson
Keyword(s):  
Count Rate ◽  
Gamma Ray ◽  
Mineral Resources ◽  
Gas Production ◽  
Oil Fields ◽  
Petroleum Exploration ◽  
Canning Basin ◽  
Gamma Ray Spectrometer ◽  
Economic Production ◽  
Spectrometer Data

Recon Exploration Pty. Ltd. has successfully completed initial testing of a new method for processing and interpretation of AGSO’s (Australian Geological Survey Organization, formerly Bureau of Mineral Resources) aerial gamma‐ray spectrometer data for petroleum exploration in the Canning Basin, Western Australia and the Otway Basin, Victoria. Count‐rate data for potassium and uranium were normalized to the thorium count rate for each sample to suppress unwanted effects of variations in surface lithology or soil type, soil moisture, vegetation cover, and counting geometry. The Canning Basin test area included five producing oil fields. All except one clearly exhibit significant and characteristic radiometric anomalies which include negative normalized potassium and more positive normalized uranium values. The Otway Basin test areas included PPL-1 commercial gas production which is associated with a group of significant radiometric anomalies similar to those in the Canning Basin. These results are similar to extensive ongoing tests in the U.S. and are explained in terms of well‐understood geological, geochemical, and geophysical models. Based on 69 wells in the three test areas, it is estimated that the chance of encountering hydrocarbons (economic production or shows) in wells within the radiometrically favorable zones is about 2.6 times greater than outside the favorable areas.

Radio Measurements of Coronal Magnetic Fields

1994 ◽  
Vol 144 ◽  
pp. 21-28 ◽  
Author(s):  
G. B. Gelfreikh
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Active Regions ◽  
High Sensitivity ◽  
Coronal Magnetic Field ◽  
Transverse Magnetic ◽  
Radio Sources ◽  
Radio Waves ◽  
Solar Active Regions

AbstractA review of methods of measuring magnetic fields in the solar corona using spectral-polarization observations at microwaves with high spatial resolution is presented. The methods are based on the theory of thermal bremsstrahlung, thermal cyclotron emission, propagation of radio waves in quasi-transverse magnetic field and Faraday rotation of the plane of polarization. The most explicit program of measurements of magnetic fields in the atmosphere of solar active regions has been carried out using radio observations performed on the large reflector radio telescope of the Russian Academy of Sciences — RATAN-600. This proved possible due to good wavelength coverage, multichannel spectrographs observations and high sensitivity to polarization of the instrument. Besides direct measurements of the strength of the magnetic fields in some cases the peculiar parameters of radio sources, such as very steep spectra and high brightness temperatures provide some information on a very complicated local structure of the coronal magnetic field. Of special interest are the results found from combined RATAN-600 and large antennas of aperture synthesis (VLA and WSRT), the latter giving more detailed information on twodimensional structure of radio sources. The bulk of the data obtained allows us to investigate themagnetospheresof the solar active regions as the space in the solar corona where the structures and physical processes are controlled both by the photospheric/underphotospheric currents and surrounding “quiet” corona.

Backscattered Electron Imaging of GaAs/AlGaAs Super Lattice Structures with an Ultra-High- Resolution SEM

1988 ◽  
Vol 46 ◽  
pp. 204-205
Author(s):  
Kazumichi Ogura ◽  
Michael M. Kersker
Keyword(s):  
High Resolution ◽  
Layer Structure ◽  
High Sensitivity ◽  
Beam Current ◽  
Electron Beam Current ◽  
Lattice Structures ◽  
Super Lattice ◽  
Different Types ◽  
Backscattered Electron ◽  
Electron Imaging

Backscattered electron (BE) images of GaAs/AlGaAs super lattice structures were observed with an ultra high resolution (UHR) SEM JSM-890 with an ultra high sensitivity BE detector. Three different types of super lattice structures of GaAs/AlGaAs were examined. Each GaAs/AlGaAs wafer was cleaved by a razor after it was heated for approximately 1 minute and its crosssectional plane was observed.First, a multi-layer structure of GaAs (100nm)/AlGaAs (lOOnm) where A1 content was successively changed from 0.4 to 0.03 was observed. Figures 1 (a) and (b) are BE images taken at an accelerating voltage of 15kV with an electron beam current of 20pA. Figure 1 (c) is a sketch of this multi-layer structure corresponding to the BE images. The various layers are clearly observed. The differences in A1 content between A1 0.35 Ga 0.65 As, A1 0.4 Ga 0.6 As, and A1 0.31 Ga 0.69 As were clearly observed in the contrast of the BE image.

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