... reservoir characterization applied geoscience society positioning receiver american association energy 10 optimal optimal positioning upstream oil & gas international crook frequency recorder exploration geophysicist optiseis solution ltd deviation optimal restriction...

... acquisition projects globally and developed and accumulated some auxiliary QC techniques, this paper mainly introduces the techniques such as quick data segmentation, clock drift correction, first break positioning, and multi-component rotation, etc. Actual practices verify that these techniques solidly...

... A complex reprocessing study was undertaken and completed in the ultra-deep waters offshore Mexico. Using legacy wide azimuth seismic data, the reprocessing study applied several techniques to achieve superior subsalt imaging and obtain optimal depth positioning of events in comparison...

... the processing time while improving data quality. The key procedures incorporate simultaneous inversion of water velocity correction, clock drift, node and source positioning, processing of near-field hydrophone data, multicomponent rotation and noise elimination, and wavefield separation in 3D Radon space...

... of traditional node positioning method which only takes account of constant water velocity. Field QC can calculate the influence of layering water velocity to get more accurate node position. Presentation Date: Tuesday, September 17, 2019 Session Start Time: 8:30 AM Presentation Time: 9:20 AM Location: 221A...

... stitching for the overlapping GPR swaths. To that end, we mated the GPR payload to a high-performance, tightly-coupled inertial GNSS system. Use of a dual-antenna GNSS receiver with an Inertial Measurement Unit (IMU) and Distance Measuring Indicator (DMI) provides complementary position solutions for direct...

..., fully equipped vessel to acquire a 4D seismic dataset. Presentation Date: Wednesday, September 27, 2017 Start Time: 11:00 AM Location: 351F Presentation Type: ORAL acquisition annual international conference seismic acquisition seismic source seg seg international exposition positioning...

... Summary Wide-azimuth, far-offset, refracted first breaks are too often eschewed as an alternative, redundant, inexpensive ocean-bottom seismic (OBS) positioning technology. I document their viability despite adverse bathymetry and anisotropy Introduction There are many ways to position...

... Summary Ocean bottom seismometer positioning is a key step in the processing flow of OBS data, especially data acquired with self pop-up types of OBS instruments. Using first arrivals from airgun shots rather than acoustic transponders, not only saves time but also leads to more accurate...

... ABSTRACT IntroductionImprovements in Positioning, Navigation and Timing (PNT) have advanced exploration through out history whether it was the exploration of the Old World, the exploration of the New World, or our ever expanding exploration within and beyond the Earth’s surface. During...

... applications, we propose a method for improving OBC receiver location accuracy in complex shallow waters. Important elements of this method include careful pre-deployment planning, the integrated control of navigation and positioning, and the combined positioning of first breaks and acoustics. The method has...

... in positioning and transmitter tilt. The seawater conductivity is measured routinely and may be compensated for. These uncertainties along with source waveform changes may accumulate to significant systematic errors, but they are controllable and their sizes easily estimated. An example of a repeated measurement...

... and reconciliation with streamer data. However positioning and timing issues as well as azimuthal coherent stacking of data need to be precisely tackled for better preserving the high frequency content of data. In this paper we show the importance of estimating accurate time statics for nodes deployed in a deep...

... upstream oil & gas mapping multi sensor utility mapping international exposition frequency wavelength cross-section quarter wavelength detection gpr utility mapping reservoir characterization depth slice positioning seg houston 2009 emi data artificial intelligence gpr...

... positioning upstream oil & gas reservoir characterization seismic data acquisition illumination infrastructure node data operation paffenholz ob node acquisition modeling main menu data acquisition node deimos field imaging separation salt overhang noise attenuation data...

..., nodes were redeployed and three repeat acquisition phases were performed over a period of 60 days. In the first phase, some nodes were co- located to establish best possible repeatability with common shots. Final node positions were determined by first arrival time analysis. The most significant factors...

... the offsets. This leads us to the familiar concept of a 4D acquisition where the primary goal is to achieve a repeat position of the center of source As WAz type acquisitions can require multiple sail line passes to achieve the required crossline offset and most require a shot regularization to a fixed grid...

... ABSTRACT Using walk-away or 3D VSP data to create Virtual Sources in salt is a new useful tool for imaging and assessing drilling hazards in salt and immediately below the base of salt. It can be also used for accurate positioning of steep salt flanks. Creating Virtual Sources inside...

... Summary Correlated positioning errors can have a detrimental impact on the resolution and imaging accuracy of 3D surveys. The impact on 4D seismic is considerably more serious. These problems can be addressed by the use of fully cross-braced acoustic positioning networks. Such networks...

... as non-zero-time imaging conditions. Then a semiautomatic procedure is applied to pick the focusing error (?T) field, and the picked ?T field is used to select the best-focused image from the CFE images. To produce an accurately positioned and well-focused focusing effect from the post-stack focusing...