Quantitative reconstruction of pore-pressure history in sedimentary basins using fluid escape pipes

Geology ◽  
2021 ◽  
Author(s):  
Joe Cartwright ◽  
Chris Kirkham ◽  
Martino Foschi ◽  
Neil Hodgson ◽  
Karyna Rodriguez ◽  
...  
Keyword(s):  
High Pressure ◽  
Pore Pressure ◽  
Time Evolution ◽  
Sedimentary Basins ◽  
Fracture Criteria ◽  
Quantitative Reconstruction ◽  
The Past ◽  
Pressure Time ◽  
Active Folding ◽  
Novel Method

We present a novel method to reconstruct the pressure conditions responsible for the formation of fluid escape pipes in sedimentary basins. We analyzed the episodic venting of high-pressure fluids from the crests of a large anticlinal structure that formed off the coast of Lebanon in the past 1.7 m.y. In total, 21 fluid escape pipes formed at intervals of 50–100 k.y. and transected over 3 km of claystone and evaporite sealing units to reach the seabed. From fracture criteria obtained from nearby drilling, we calculated that overpressures in excess of 30 MPa were required for their formation, with pressure recharge of up to 2 MPa occurring after each pipe-forming event, resulting in a sawtooth pressure-time evolution. This pressure-time evolution is most easily explained by tectonic overpressuring due to active folding of the main source aquifer while in a confined geometry.

scholarly journals Pore pressure prediction in Niger Delta high pressure, high temperature (HP/HT) domains using well logs and 3D seismic data: a case study of X-field, onshore Niger Delta

2021 ◽  
Vol 11 (10) ◽  
pp. 3747-3758
Author(s):  
Abdulquadri O. Alabere ◽  
Olayemi K. Akangbe
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Pore Pressure ◽  
Niger Delta ◽  
Seismic Velocity ◽  
Sedimentary Basins ◽  
Geothermal Gradient ◽  
Pore Pressure Prediction ◽  
Fracture Gradient ◽  
High Temperature High Pressure

AbstractFew wells targeting high temperature, high pressure intervals in most tertiary sedimentary basins have achieved their objective in terms of technicalities and cost. Since most shallow targets have been drilled, exploration focus is drifting into deeper plays both onshore and in deep offshore areas. To ensure safe and economic drilling campaigns, pore pressure prediction methodologies used in the region needs to be improved. The research aims at generating and testing a modification of Eaton’s equation fit for high temperature, high pressure intervals on a field. The evolution of pore pressure in the field was established from offset well data by making several crossplots, and fracture gradient was computed using Mathew and Kelly’s equation. Eaton’s equation parameters were then calibrated using several wells until a desired field scale result was achieved when compared with information from already drilled intervals i.e., kicks and RFT data. Seismic velocity data resulting from high density, high resolution velocity analysis done to target deep overpressured intervals were then used to predict 1D pore pressure models at six selected prospect locations. Analyses reveal depths shallower than 3800 m TVD/MSL with geothermal gradient 3.0 °C/100 m and pressure gradient less than 1.50sg EMW are affected mainly by undercompaction; depths greater than 3800 m TVD/MSL with geothermal gradient of 4.1 °C/10 m and pressure gradients reaching 1.82–2.12sg EMW are affected by unloading with a narrow drilling margin for the deep highly pressured prospect intervals. Eaton’s n-exponent was modified to 6, and it proved accurate in predicting high overpressure in the first prospect wells drilled.

scholarly journals Commissioning of a High Pressure Time Projection Chamber with Optical Readout

Instruments ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 22
Author(s):  
Alexander Deisting ◽  
Abigail Waldron ◽  
Edward Atkin ◽  
Gary Barker ◽  
Anastasia Basharina-Freshville ◽  
...  
Keyword(s):  
High Pressure ◽  
Neutrino Oscillation ◽  
Time Projection Chamber ◽  
Neutrino Experiment ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Optical Readout ◽  
Systematic Uncertainties ◽  
Pressure Time ◽  
Time Projection

The measurements of proton–nucleus scattering and high resolution neutrino–nucleus interaction imaging are key in reducing neutrino oscillation systematic uncertainties in future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed and operated at the Royal Holloway University of London and CERN as a first step in the development of a HPTPC that is capable of performing these measurements as part of a future long-baseline neutrino oscillation experiment, such as the Deep Underground Neutrino Experiment. In this paper, we describe the design and operation of the prototype HPTPC with an argon based gas mixture. We report on the successful hybrid charge and optical readout using four CCD cameras of signals from 241Am sources.

Impact of high pressure on the progress of polymerization of DGEBA cured with different amine hardeners: dielectric and DSC studies

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 105934-105942 ◽  
Author(s):  
M. Tarnacka ◽  
M. Wikarek ◽  
S. Pawlus ◽  
K. Kaminski ◽  
M. Paluch
Keyword(s):  
High Pressure ◽  
Data Analysis ◽  
Dsc Studies ◽  
Curing Reaction ◽  
Dielectric Data ◽  
Novel Method ◽  
Extract Information

A novel method of dielectric data analysis to extract information on the progress of the curing reaction is proposed.

scholarly journals Interpretation of Historical Facts in Modern Italian Literature by the Example of Umberto Eco’s Novel “Baudolino”

2015 ◽  
pp. 251-256
Author(s):  
O. Yu. Mushtanova
Keyword(s):  
Italian Literature ◽  
Historical Period ◽  
Medieval History ◽  
The Novel ◽  
Ultimate Truth ◽  
The Past ◽  
Historical Figures ◽  
Italian City ◽  
Novel Method ◽  
The Government

The article is devoted to interpretation of historical facts in Umberto Eco's novel " Baudolino ". The subject of interpretation in the novel is medieval history, in particular, the reign of the emperor Frederick Barbarossa. Eco uses the typical for the historical novel method, which is the combination of facts from chronicles and fictional elements; the events are shown by the eyes of an invented character Baudolino. Emphasizing the connection between history and modernity, Eco proposes to revise the stereotypes associated with the mentioned historical period. The portraits of historical figures are borrowed from the chronicles, however in the novel they get more emotional in the perception of the protagonist, typical cliches are replaced by individuality. The opposition of italian communes to the government of Frederick also becomes a part of Baudolino's personal history. The interpretation of many events is based on legendary sources, including local tales of the italian city Alessandria, the legends of Grail and of Prester John. The legendary material fills in the gaps in medieval history. Many events (in particular, the participation of Barbarossa in the Third Crusade) correspond to the chronicles in the descriptive part, however they acquire a fictional motivation. The mystery of the emperor's death is solved in a detective key. The novel presents various doctrines elaborated in the imperial office of Frederick, their authorship is attributed to Baudolino. In the novel «Baudolino» Umberto Eco not only interprets creatively certain facts of the past, but he also practices the postmodern concept of history, according to which the past is unknowable as objective and ultimate truth and therefore it exists only in the form of a narrative. The past and the present have no fundamental difference, the history is always interpreted from the perspective of the present.

scholarly journals Using Video to Give More Effective and Engaging Science Talks

2021 ◽  
Vol 6 ◽  
Author(s):  
Eric B. Brennan
Keyword(s):  
The Past ◽  
Presentation Time ◽  
Effective Science ◽  
Novel Method ◽  
Do It Yourself ◽  
Remaining Time ◽  
Live Presentation

Science presentations at conferences are an important way that scientists share exciting research discoveries. Some presentations are informative and engaging, but unfortunately many are not. This article describes a novel method (Video Let’s Talk, VLT) for more engaging and effective science presentations, where the presenter 1. makes a video that fills half of the presentation time, 2. shows the video in lieu of a live presentation, and 3. spends the remaining time engaging with the audience. The benefits and challenges of the VLT method are described along with tips on how to do the VLT well. These insights are based on the author’s experience giving numerous VLT presentations to scientists, farmers and other groups over the past seven years. The VLT method is timely considering how the COVID pandemic has forced scientists to learn new skills in do it yourself (DIY) video making in order to participate in virtual conferences.

Basis of Novel Technique for Spatial Objects Shaping With High-Pressure Abrasive Water Jet

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
P. J. Borkowski ◽  
J. A. Borkowski
Keyword(s):  
High Pressure ◽  
Feed Rate ◽  
Spatial Model ◽  
Theoretical Basis ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Spatial Objects ◽  
Novel Technique ◽  
Raster Image ◽  
Novel Method

Novel method for the 3D shaping of different materials using a high-pressure abrasive water jet is presented in the paper. For the steering movement process of the jet, a principle similar to the raster image way of record and readout was used. However, respective colors of pixels of such a bitmap are connected with adequate jet feed rate that causes erosion of material with adequate depth. Thanks to that innovation, one can observe spatial imaging of the object. Theoretical basis as well as spatial model of material shaping including steering program is presented in. There are also presented experimental erosion results as well as practical examples of the object’s bas-relief made of metal.

Fully predictive Common Rail fuel injection apparatus model and its application to global system dynamics analyses

2016 ◽  
Vol 18 (3) ◽  
pp. 273-290 ◽  
Author(s):  
Alessandro Ferrari ◽  
Pietro Pizzo
Keyword(s):  
High Pressure ◽  
Control System ◽  
Fuel Injection ◽  
Time History ◽  
Pressure Control ◽  
Rail Pressure ◽  
High Pressure Pump ◽  
Pressure Time ◽  
Pressure Control System ◽  
Injection Apparatus

A fully predictive model of a Common Rail fuel injection apparatus, which includes a detailed simulation of rail, pump, piping system, injectors and rail pressure control system, is presented and discussed. The high-pressure pump and injector sub-models have been validated separately and then coupled to the rail and pressure control system sub-models. The complete predictive model has been validated and applied to investigate the effects of the dynamics of each component of the injection apparatus on the rail pressure time history. Variable timing of the high-pressure pump delivery phases has also been considered, and the influence of this parameter on the injection performance has been analysed for both single- and multiple-injection events. Furthermore, the injection system dynamics during the transients between steady-state working conditions has been investigated in order to highlight the role played by the dynamic response of the pressure control system on the rail pressure time history.

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