... Multi-sensor streamers have many advantages over traditional hydrophone-only streamers. In particular, they provide a measure of the pressure gradient which allows for data driven broadband de-ghosting. This results in an improved subsurface image and allows the streamer to be towed deeper...

... New and innovative survey design solutions for marine towed streamer acquisition were recently introduced by Widmaier et al . (2019). One of the key technical elements was the concept of wide-tow multi-sources, i.e., the distribution of multiple sources along the front of a streamer spread. All...

... of OBN acquisition, the cost of streamer operation is relatively low, while it is difficult for streamer vessels to carry out operation in the dense platforms and facilities survey areas, considering the operation safety and acquisition efficiency. To balance the data quality and acquisition cost...

...) interpolation to assess its ability to transcend aliasing limits without the computational effort of going to a full 5D interpolation process. In particular we consider the problem of interpolating between streamers, in marine acquisitions. We started with a “standard”, 3D convolutional neural network (CNN...

... accurate models to high frequencies even from very sparse node geometries. A split-spread source-over-streamer acquisition geometry using six wide-tow sources in addition to a long offset FWI front source will be used to acquire 3700 km 2 of high-quality data. Seafloor nodes in a sparse grid of 1200...

... Imaging the subsurface using passive data acquired with a towed streamer configuration is discussed in this paper. Instead of an active source, the acoustic wavefield generated by the seismic vessel is used for imaging the subsurface. The primary purpose of this work was to test the feasibility...

...Steering on grid: an efficient way to reduce infill rate for towed streamers surveys Lucio Di Pietro* (Total SA) and Paul Endicott (Consultant, Oasis PEC Ltd) Summary It has always been obvious that implementing a method to control or at least attenuate as much as possible the dynamic The cost...

... We describe a series of barnacle mitigation measures applied during a five-month towed-streamer seismic survey by the Ramform Titan in the Campos Basin, Brazil. The 14 × 10000 m streamer spread was an industry record and occurred during the period of the year recognized as the high season...

... Though many successful deghosting applications have been reported, deghosting of acquisitions in shallow water with deep-towed streamers is still challenging. High curvature events cannot be focused properly using a linear Radon transform and as a consequence the sparsity constraint performs...

... An ultra-wide penta source configuration was deployed in combination with a high-density multisensor streamer spread to address shallow exploration targets in the western part of the Norwegian Barents Sea in 2020. The total source separation was 315 m, and is the widest towed by a seismic vessel...

... The Viking Graben is a mature exploration area on the Norwegian Continental Shelf that still suffers from illumination and resolution challenges that reprocessing alone cannot solve. In the following case study we demonstrate how those challenges were addressed by a novel towed streamer...

... project offshore hokkaido japan annual meeting upstream oil & gas seismic acquisition reservoir characterization seismic characterization tomakomai co2 acquisition seismic data seg international exposition energy conservation processing workflow streamer data processing workflow...

... ABSTRACT A seismic field experiment using 6 sources fired in simultaneous source mode has been conducted. The experiment involved two vessels operating in tandem. The front vessel acting as the streamer towing vessel and the trailing vessel towing six wide towed single sub-array sources...

... processing techniques and successful workflow. Presentation Date: Monday, September 16, 2019 Session Start Time: 1:50 PM Presentation Start Time: 4:20 PM Location: 214D Presentation Type: Oral correction velocity analysis streamer processing technique acquisition system japan seg...

... ABSTRACT We propose an acquisition geometry to increase the length of land streamers two or more times by using more than one source located at offsets equal to 2x or more of the original length of the streamer, respectively. The signal-to-noise ratio of the far-offset refractions are boosted...

... ABSTRACT In this paper we present results and benefits of using smaller volumes triple source configurations in connection with a large marine streamer exploration campaign in the US Gulf of Mexico. The utilization of more sources behind a streamer vessel will increase efficiency and improve...

... model attenuation noise difference plot recent survey annual meeting marine seismic acquisition efficiency de-noise shot gather streamer strum noise reservoir characterization swell noise noise attenuation seg international exposition application onboard de-noise processing data re...

... imaging in these settings. In addition, large streamer separation introduce aliasing of spatial frequencies across the streamers. A new marine survey configuration, known as TopSeis, was introduced in 2017 in order to address the shallow-target problem. However, introduction of near offset data has shown...

... ABSTRACT In this paper, we demonstrate how conventional single- hydrophone streamer data can be combined with dual-sensor acquisition data to support the reservoir monitoring of a producing field in offshore West Africa. We describe innovative processing techniques for increasing the 4D...

... acquisition upstream oil & gas acquisition technology annual meeting variable depth streamer baseline wavefield emerson jungo sergio tchikanha eddy brosille reservoir characterization kacem chikh configuration abderrahim lafram streamer seg international exposition...