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The AAPG/Datapages Combined Publications Database

Showing 1,766 Results. Searched 191,769 documents.

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Velocity Anisotropy of Upper Mantle: ABSTRACT

G. B. Morris, R. W. Raitt, G. G. Shor, Jr.

AAPG Bulletin

.... A two-dimensional delay time function method was used to study (1) the anisotropy and (2) the delay-time surface. The upper mantle was found to display...


Factors Affecting Delay of Upstream Oil and Gas Development Projectors in Indonesia: Case Study 2012-2013

Josia T. Simanjuntak, Anggono Mahendrawan

Indonesian Petroleum Association

... to the risk of delay may have negative consequences, such as time overrun, cost overrun...


A Novel Method of Deriving Weathering Statics from First Arrival Refractions

G. W. Hollingshead, R. R. Slater

Pacific Section of AAPG

... of work done earlier in refraction interpretation using delay time curves (5). The supporting mathematics are presented in Appendix A for those interested...


Abstract: Estimation of Epsilon Parameter of Fracture Induced Anisotropy by In-Situ Seismic Refraction Survey

Eko March Handoko Masyhur, Abdul Ghani Md Rafek, Khairul Arifin Mohd Noh

Geological Society of Malaysia (GSM)

... data were interpreted using General Reciprocal Method (GRM), Delay Time, and ABC Method. Analysis of the velocities of non-weathered layer uses...


Optimum Deconvolution for Seismic Inversion Purposes

M. Suprajitno, L. Nutt, P. Busono

Southeast Asia Petroleum Exploration Society (SEAPEX)

... but this time using a maximum delay wavelet with a frequency of 30 Hz shown in Figure 3-b. Note that the duration of the wavelet corrupts four successive...


Star: Shallow Time Anomaly Replacement

Michael O. Marcoux, Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... property of an LVT is that it causes a negligible displacement of a reflected ray yet there can be a significant associated time delay. This is due...


Introduction: Part 2. Economics and Risk Assessment

Peter R. Rose

AAPG Special Volumes

... that considers the time value of money and petroleum taxes. Next we proceed to an assessment of various economic yardsticks used to measure the economic...


Lyons West Field, Rice County, Kansas: ABSTRACT

B. J. Wright

AAPG Bulletin

... contributed to the delay in recognizing the widespread continuity of the pre-Pennsylvanian sandstones which were called "Conglomerate," "Kinderhook...


The Free-corer: Sediment Sampling Without Wire and Winch: NOTES

David G. Moore

Journal of Sedimentary Research (SEPM)

... determines time delay; 3. three spacer nuts, as shown here, are adjusted against concrete weight to give rigidity to corer; 4. detail of casing shoe which...


Upstream Oil and Gas Development Projects in Indonesia: A Project Risk Analysis Based on Historical Data from 2015 to 2018

G. Daru P. Dewanto, Arnold Sihombing

Indonesian Petroleum Association

... projects experiences which several risk events were being identified during the project life cycle related to delay in project completion time...


Abstracts: Application of Shear-wave Splitting Analysis to Fracture Characterization for a Shaunavon Tight Oil Reservoir; #90173 (2015)

N. Chaminda Sandanayake and Richard A. Bale

Search and

... present in the overburden. Though the amount of splitting is relatively small, we did observe an anomalous region with higher time delay between the fast...


Abstracts: Fluid Substitution and Seismic Modelling in a Sandstone Aquifer; #90173 (2015)

Virginia C. Vera and Don C. Lawton

Search and

...% and the basal reflector of the sandstone reservoir exhibits a time delay of 1.6 msec. From seismic modelling it was found that the injection zone can...


Subsurface Characterizaton Using Microseismic Velocity, Attenuation, and Ansiotrophy Tomography in a Geothermal Field

Ahmad Syahputra, Andri Dian Nugraha, Rachmat Sule, Sri Widiyantoro

Indonesian Petroleum Association

... production and injection. A non-linear approach was used to solve delay time tomography. This enabled extension of the study to generate attenuation...


Seismic Line Across the Wind River Thrust Fault, Wyoming

W.L. Basham, W.F. Martin

Rocky Mountain Association of Geologists

... the time section (Fig. 2) shows an apparent flattening of the base of granite in zone IV, this flattening is caused by the travel time delay...


Geophysical Investigations of the Hot Spring Occurrences in the Sungei Serai and Kampung Dusun Tua Areas, Hulu Langat, Selangor

Mohd Anuar Md. Razali

Geological Society of Malaysia (GSM)

...) of the transient decay over a series of time intervals known as delay times. In fact, the measurement of the voltages are averaged over many cycles (known...


Abstract: Refinement of Arrival-Time Picks Using an Iterative, Cross-Correlation Based Workflow; #90224 (2015)

Jubran Akram and David W. Eaton

Search and

..., University of Calgary 2 Sensor Geophysical Ltd. Summary Cross-correlation based techniques are widely used for time-delay estimation in electrical...


Time Series Analysis II

Gerard V. Middleton

Special Publications of SEPM

...- The commonest method is known as the method of delays: from the original time series we use a delay m, corresponding to a time interval T = mAt to produce the d...


Abstracts of Theses: Seismic Crustal Studies in Eastern Canada, the Gulf of St. Lawrence Region

Gerald N. Ewing

CSPG Bulletin

..../sec. respectively, overlie the intermediate layer. Travel-time curves were adjusted to reduce the delay time effect, associated with variations...


Geodetic Baselines Across the Gulf of California Using the Global Positioning System: Chapter 24: Part IV. Satellite Geodesy

T. H. Dixon, D. M. Tralli, G. Blewitt, J. P. Dauphin

AAPG Special Volumes

... of the tropospheric path delay during the time span of the experiment. For each of these methods, it is common to measure or estimate only the wet delay at zenith...


Abstract: Shear Wave Splitting Analysis of Borehole Microseismic Reveals Weak Azimuthal Anisotropy Hidden Behind Strong VTI Fabric of the Lower Paleozoic Shales in Northern Poland; #90310 (2017)

Wojciech Gajek, James V. Verdon, Michal Malinowski, Jacek Trojanowski

Search and

... velocities. Splitting parameters which can be assessed using a microseismic array are polarization of the fast shear wave and time delay between...


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