PREDICTIVE DECOMPOSITION OF TIME SERIES WITH APPLICATION TO SEISMIC EXPLORATION

Geophysics ◽  
1967 ◽  
Vol 32 (3) ◽  
pp. 418-484 ◽  
Author(s):  
Enders A. Robinson
Keyword(s):  
Time Series ◽  
Sedimentary Rock ◽  
Economic Value ◽  
Oil Fields ◽  
Seismic Exploration ◽  
Controlled Conditions ◽  
Seismic Records ◽  
Exploration Seismology ◽  
A Charge

In exploration seismology, a charge of dynamite is exploded under controlled conditions, and the resulting vibrations at various points on the surface of the ground are detected by geophones and are recorded as seismic traces on the seismogram. The analysis of such seismic records yields valuable information about the structure of the sedimentary rock layers in potential oil producing areas, and such information is of considerable economic value in increasing the probability of locating new oil fields.

THE SEISMIC HISTORY OF SOUTHEASTERN NEW MEXICO

Geophysics ◽  
1953 ◽  
Vol 18 (1) ◽  
pp. 142-159
Author(s):  
Arland I. Innes
Keyword(s):  
New Mexico ◽  
Oil Fields ◽  
Seismic Exploration ◽  
History Of ◽  
Seismic Records ◽  
Oil Company

Seismic exploration in southeastern New Mexico was initiated early in 1928 by the Amerada Petroleum Corporation and the Gulf Oil Company. In the period 1928–1931, refraction profiling was exclusively used to detail Hobbs and to locate the Monument structure. The 1932–1935 period was dominated by correlation refractions. Detailed shooting outlined the Monument structure. During the period 1934–1950, reflection profiling was successfully used and is credited with locating the Knowles, Bagley, Hightower, Cross Roads, Denton, Bough, and Saunders oil fields. The presentation of data includes reproductions of seismic records and structure maps.

Estimating the economic value of big game habitat production from prescribed fire using a time series approach

2002 ◽  
Vol 8 (2) ◽  
pp. 119-129 ◽  
Author(s):  
John Loomis ◽  
Dana Griffin ◽  
Ellen Wu ◽  
Armando González-Cabán
Keyword(s):  
Time Series ◽  
Prescribed Fire ◽  
Economic Value ◽  
Time Series Approach

scholarly journals Low-frequency noise suppression for desert seismic data based on a wide inference network

2019 ◽  
Vol 16 (4) ◽  
pp. 801-810
Author(s):  
Yue Li ◽  
Wei Yu ◽  
Chao Zhang ◽  
Baojun Yang
Keyword(s):  
Seismic Data ◽  
Low Frequency ◽  
Seismic Exploration ◽  
Frequency Noise ◽  
Layer By Layer ◽  
Low Frequency Noise ◽  
Time Space ◽  
Manual Adjustment ◽  
Inference Network ◽  
Seismic Records

Abstract The importance of seismic exploration has been recognized by geophysicists. At present, low-frequency noise usually exists in seismic exploration, especially in desert seismic records. This low-frequency noise shares the same frequency band with effective signals. This leads to the limitation or failure of traditional methods. In order to overcome the shortcomings of traditional denoising methods, we propose a novel desert seismic data denoising method based on a Wide Inference Network (WIN). The WIN aims to minimize the error between the prediction and target by residual learning during training, and it can obtain a set of optimal parameters, such as weights and biases. In this article, we construct a high-quality training set for a desert seismic record and this ensures the effective training of a WIN. In this way, each layer of the trained WIN can automatically extract a set of time–space characteristics without manual adjustment. These characteristics are transmitted layer by layer. Finally, they are utilized to extract effective signals. To verify the effectiveness of the WIN, we apply it to synthetic and real desert seismic records, respectively. In addition, we compare WIN with f – x deconvolution, variational mode decomposition (VMD) and shearlet transform. The results show that WIN has the best denoising performance in suppressing low-frequency noise and preserving effective signals.

Crustal structure of the Barents Sea from 3D active seismic tomography.

2020 ◽  
Author(s):  
Alexey Shulgin ◽  
Jan Erik Lie ◽  
Espen Harris Nilsen ◽  
Jan Inge Faleide ◽  
Sverre Planke
Keyword(s):  
Crustal Structure ◽  
Seismic Tomography ◽  
Barents Sea ◽  
Seismic Exploration ◽  
Seismic Profiles ◽  
Seismic Stations ◽  
S Waves ◽  
The Barents Sea ◽  
Seismic Records ◽  
Structural Architecture

<p>The Barents Sea shelf has been covered by numerous wide-angle seismic profiles aiming to resolve the crustal structure of the shelf. However, the overall structural architecture of the crystalline crust is still not fully understood, due to limited and sparse distribution of deep-sampling seismic profiles. </p><p>The petroleum related seismic exploration in Norwegian waters has been ongoing for decades. The recent increase of the seismic broadband stations onshore (including temporal deployments) provokes the idea to use these stations and the active seismic sources from the regional seismic reflection surveys, including academic and industry seismic projects, to reveal the crustal-scale structure of the western Barents Sea.</p><p>We have analyzed seismic records from 8 permanent seismic stations from Norway, Sweden and Finland, and 12 temporally deployed broadband seismic stations from the ScanArray seismic network, which recorded more than 100’000 marine airgun shots from academic and oil industry campaigns in the south-western quarter of the Barents Sea.</p><p>The overall quality of the seismic records is exceptionally good. We observe clear phases recorded from offsets reaching 750 km. The identified phases include refracted crustal and mantle arrivals as well as Moho reflections, including both P and S waves. The overall quantity, quality, and the geometry of the seismic data makes it perfect for the application of the 3D joint refraction/reflection travel time seismic tomography to study the crustal structure of the Barents Sea. In this work we would like to present our first results from the 3D seismic tomography.</p>

Geostatistics Method for Identification of Minor Structure Seismic Attribute

2013 ◽  
Vol 690-693 ◽  
pp. 3545-3548
Author(s):  
Li Juan Zhang ◽  
Yong Qiang Ma ◽  
Zi Liang Yu ◽  
Jun Jun Wei
Keyword(s):  
Coal Seam ◽  
Coal Mining ◽  
Economic Value ◽  
Great Influence ◽  
Seismic Exploration ◽  
3D Seismic ◽  
Seismic Attribute ◽  
Qualitative And Quantitative

Minor structure of coal seam has a great influence on safe and economic coal mining. It has been noticed by more and more people that the application of 3D-seismic exploration technology to solve minor structures in coal mining. In this paper, geostatistics method was adopted to solve the relativity between multi-attitude and small structures, qualitative and quantitative predicate the mine small structures, which can improve the interpretation precision, and can promote the interpreter’s efficiency, then created more economic value.

scholarly journals Simulation of Fractured Rock Heterogeneity with the Grid Characteristic Method Using Structured Multiblock Grids

2021 ◽  
pp. 50-56
Author(s):  
Н.И. Хохлов
Keyword(s):  
Seismic Response ◽  
Seismic Waves ◽  
Fractured Rock ◽  
Seismic Exploration ◽  
Heterogeneous Structure ◽  
Rock Heterogeneity ◽  
Seismic Records ◽  
Rock Model ◽  
Waves Propagation ◽  
Direct Problems

Основной задачей, стоящей перед сейсмической разведкой, является восстановление структуры и свойств подповерхностного пространства на основе регистрации колебаний земной поверхности. Для этого необходимо решить обратную задачу, что, в свою очередь, требует решения серии прямых задач с последовательно изменяющейся моделью геологического массива. В связи с открытием нетрадиционных месторождений (например, Баженовская свита), актуальной становится задача интерпретации сейсмического сигнала, обусловленной неоднородной структурой трещиноватых пластов. В настоящей работе была построена трещиноватая модель, отражающая некоторые особенности нефтеносных геологических сред. Проведено численное моделирование распространения сейсмических волн и получены синтетические площадные сейсмограммы. Также был проведен анализ сейсмического отклика. The key objective of seismic exploration is the recreation of the subsoil structure and properties by registering the surface waves. To solve a reverse problem, several direct problems shall be solved as the rock model is gradually changed. As nonconventional deposits are discovered (like the Bazhenov suite), it becomes necessary to interpret the seismic response caused by the heterogeneous structure of the fractured rock. This study presents a fractured rock model that represents some features of oilbearing geology. The seismic waves propagation was simulated, and composed widepatch seismic records were produced. The seismic response was also analyzed.

scholarly journals Evaluasi Economic Value Added (EVA), Financial Value Added (FVA) dan Market Value Added (MVA) dengan Time Series Approach Sebagai Alat Penilaian Kinerja Keuangan. ( Pada PT. Garuda Indonesia Tbk Periode 2015-2019)

MANAJERIAL ◽  
2021 ◽  
Vol 8 (03) ◽  
pp. 294
Author(s):  
Diyanti Rifal Agustin ◽  
Ni Nyoman Putu Martini ◽  
Tatit Diansari Riskiputri
Keyword(s):  
Time Series ◽  
Financial Performance ◽  
Economic Value ◽  
Value Added ◽  
Market Value ◽  
Added Value ◽  
Economic Value Added ◽  
Literature Study ◽  
Time Series Approach ◽  
Market Value Added

Background – Financial performance is a company's work performance that has been achieved in a certain period and can be seen in the financial statements of the company concerned. Financial statement analysis using conventional methods is often used by companies to measure their financial performance, namely financial ratio analysis. PT Garuda Indonesia Tbk, must have the option to create value added or large profits and create or add value to the capital that has been donated to meet the assumptions for financial backers (financial backers or investors). Purpose – Measure financial performance with Economic Value Added (EVA), Financial Value Added (FVA) and Market Value Added (MVA). Design/ Methodology/ Approach – This is a descriptive research with a quantitative approach. Sources of data in this study using external secondary data sources obtained through literature study which is arranged in the form of documents in the form of financial reports. The analysis technique in this study uses Time Series Analysis. Results and Discussion - EVA measurement with a time series approach from 2015-2019 the average EVA is -25,291,800.85, this indicates that the company has not been able to provide added value to shareholders because EVA is negative (EVA<0) so it is said to perform Not Good. Measurement of FVA with a time series approach from 2015-2019 the average FVA is 21,359,193.35, this indicates that the company is able to provide added financial value for companies and investors because the FVA value is Positive (FVA> 0) so it is said to be performing well . MVA measurement with a time series approach from 2015-2019 the average MVA is 9,019.927,024,116, this indicates that the company is able to provide added value because the MVA value is Positive (MVA> 0) so it is said to be performing well. Conclusion – EVA, FVA, and MVA values ​​in 2015 were positive, in 2016 EVA and FVA were negative while MVA was positive, in 2017 EVA was negative while FVA and MVA were positive, in 2018 EVA was negative, FVA and MVA were positive, in 2018 2019 EVA, FVA, and MVA are positive. Research Implications - The research results in this study can be considered by the management of PT Garuda Indonesia in assessing and evaluating the company's financial performance.

Small-scale technology solutions to eliminate flaring

2016 ◽  
Vol 56 (2) ◽  
pp. 612 ◽  
Author(s):  
James Brown ◽  
Chiew Yen Law ◽  
Katherine Fielden ◽  
Ceri-Sian Dee ◽  
Neil Pollock
Keyword(s):  
Natural Gas ◽  
Economic Value ◽  
Cost Effective ◽  
Oil Fields ◽  
Small Scale ◽  
Well Testing ◽  
Associated Gas ◽  
Future Technologies ◽  
Gas Supply

Five percent of the world’s gas supply is wasted by being flared or vented into the atmosphere, leading to a huge loss of potential revenue, not to mention a significant impact on the environment. This is equivalent to 150 billion cubic metres of natural gas per year and the release of 400 million metric tons of CO2 equivalent. The industry does this for a variety of valid reasons, including well testing, emergencies, commissioning, maintenance, or simply because an economic solution for capturing and using the gas has not been discovered. Capture of flared gas, therefore, presents an economic and environmentally beneficial opportunity to create new value chains that can benefit not only the industry but also people’s quality of life. This extended abstract draws on a recent DNV GL project to assess existing and future technologies and concepts for capturing small volumes of associated gas that are normally flared from oil fields, both onshore and offshore. The following four technology options that can be used to capture associated gas, convert it, and either utilise the product onsite or transport it to market for consumption are considered. Using more cost-effective ways of transporting natural gas where there is no existing pipeline. Converting gas into products with a higher economic value through chemical processes. Novel concepts—bringing the solution closer to the source of gas flaring. Other solutions. The extended abstract then focuses on cost-effective ways of transporting gas, in particular the use of micro-LNG solutions

Kajian Morfometri dan Tingkat Kematangan Gonad Rajungan di Perairan Betahwalang, Demak

2021 ◽  
Vol 10 (2) ◽  
pp. 175-183
Author(s):  
Iqbal Maulana ◽  
Irwani Irwani ◽  
Sri Redjeki
Keyword(s):  
Time Series ◽  
Size Structure ◽  
Growth Parameters ◽  
Carapace Width ◽  
Economic Value ◽  
Survey Method ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Gonad Maturity

Rajungan (Portunus pelagicus) merupakan komoditas laut yang memiliki nilai ekonomis yang tinggi, dimana berbanding lurus dengan penangkapan yang terus meningkat. Tingkat pemanfaatan yang tidak mengindahkan ukuran dan kondisi rajungan dapat mempengaruhi struktur ukuran dan stok rajungan di suatu perairan. Penelitian ini bertujuan untuk mengetahui distribusi ukuran, hubungan lebar dan berat rajungan serta distribusi tingkat kematangan gonad (TKG) di perairan Betahwalang, Demak. Penelitian menggunakan metode survey dengan analisis yang bersifat deskriptif yang dilakukan secara “time-series”. Pengamatan sampel rajungan sebesar 10% dari hasil tangkapan yang didaratkan oleh setiap nelayan di pengepul rajungan.. Hasil dari penelitian ini menujukkan dari 3030 ekor rajungan yang diamati diketahui distribusi lebar karapas rajungan berkisar antara 35 – 185 mm dan kisaran berat sebesar 10 – 350 gram. Rajungan yang terdapat di perairan Betahwalang memiliki pertumbuhan yang bersifat allometrik positif pada rajungan jantan dan betina pada bulan Januari serta Februari.  Hasil nilai b sebesar 3,29 dan 3,08 (Januari & Februari) pada rajungan jantan. Nilai b sebesar 3,10 dan 3,15  pada rajungan betina (Januari & Februari) serta nilai b sebesar 3,14 pada keseluruhan rajungan. Sehingga diketahui pertumbuhan lebar karapas lebih cepat dibandingkan bobot rajungan. Sedangkan distribusi tingkat kematangan gonad rajungan betina adalah 21% pada TKG 1; 63% pada TKG 2; serta 16% pada TKG 3, dengan ukuran pertama kali matang gonad adalah 141,51 mm. Blue swimming crab (Portunus pelagicus) is a marine commodity has a high economic value , which is causing the crab catch to rise as well. The catch rate that does not consider the size and maturity of sea crab can affect the size structure and population stock of sea crab in waters. This study aims to determine the size distribution,the relationship of width and weight of Blue swimming crab and distribution of gonad maturity in Betahwalang, Demak. There’s a descriptive survey method used in this study with time-series observations. The sample size is about 10% of the total number landed crab from each fisherman. The results of this study showed that from 3030 crabs observed, the distribution of crab carapace width ranged from 35 – 185 mm and the weight range at 10 – 350 gram. The results showed the all crabs has a positive allometric on growth parameters. The value of  b 3,29 and 3,08 (January & February) in male blue swimming crab, 3.10 and 3.15 (January & February) on female sea crabs, and 3.14 on whole sea crabs. So it is known that the growth of carapid width is faster than the weight of crab. While the distribution of female crab gonad maturity level is 21% in level 1; 63% in level 2; and 16% in level 3, with the first size of mature gonad at 141,51 mm.

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