Relationship between fluid-escape pipes and hydrate distribution in offshore Sabah (NW Borneo)

Paganoni, M.; Cartwright, Joe; Foschi, Martino; Shipp, Craig; Rensbergen, P. Van

doi:10.1016/j.margeo.2017.09.010

Cited by 27 publications

(22 citation statements)

References 99 publications

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“…660 Ostanin et al, 2013). Likewise, other hydrocarbon provinces with different structural styles, such as 661 the fold-and-thrust belt offshore Sabah (Paganoni et al, 2018), as well as the Green Canyon and 662 Mississippi Canyon areas in the Northern Gulf of Mexico (Sassen et al, 2001;Roberts et al, 663 2006b;Simonetti et al, 2013), display isolated patches of shallow amplitude anomalies overlying 664 deeper hydrocarbon reservoirs. 665…”

Section: Hydrocarbon Plumbing System 576mentioning

confidence: 99%

A natural gas hydrate system on the Exmouth Plateau (NW shelf of Australia) sourced by thermogenic hydrocarbon leakage

Paganoni

King

Foschi

et al. 2019

Marine and Petroleum Geology

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Section: Hydrocarbon Plumbing System 576mentioning

confidence: 99%

A natural gas hydrate system on the Exmouth Plateau (NW shelf of Australia) sourced by thermogenic hydrocarbon leakage

Paganoni

King

Foschi

et al. 2019

Marine and Petroleum Geology

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“…Seismic reflection profiles and wireline well logs in conjunction with core data (Figure 2), are commonly used as indicators to identify the presence of NGH (e.g., Paganoni et al, 2016Paganoni et al, , 2018. The two key NGH identification parameters are briefly discussed below:…”

Section: Natural Gas Hydrate Identificationmentioning

confidence: 99%

A Case Study Of Natural Gas Hydrates (NGH) In Offshore NW Sabah: Identification, Shallow Geohazard Implication For Exploration Drilling, Extraction Challenges And Potential Energy Resource Estimation

Jong¹,

Oil²,

Limited³

et al. 2020

BGSM

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Natural gas hydrates (NGHs), sometimes referred to as “flammable ice”, are crystalline solids, consisting of hydrocarbon gases with low molecular weight, such as methane, ethane and propane, bound with water molecules within cage-like lattices. The water molecules and low molecular weight NGH lattices are stable within a specific range of temperatures and pressures, and the source of the gases can be biogenic or thermogenic in origin. NGHs are common in the upper hundreds of metres of sub-seafloor sediments on the continental margins at water depths greater than about 500 m. Seismic reflection profiles and wireline well logs are common indicators used to identify the presence of NGHs, which are often encountered during offshore deepwater exploration drilling. They may cause geohazards such as slope instability, expulsion of the seafloor, shallow water flows and shallow gas if the stability of penetrated NGHs is disturbed and starts to dissociate. Methane gas hydrates represent a significant potential energy resource, as illustrated in this case study from offshore NW Sabah and may represent one of the world’s largest reservoirs of carbon-based fuel, with some estimates suggest that the hydrocarbons bound in the form of NGHs may rival the total energy resources contained in other conventional hydrocarbon sources. Methane can be extracted from NGHs through three methods: depressurization, inhibitor injection and thermal stimulation. However, risk associated with NGHs extraction can contribute to environmental concerns such as global warming and a decrease in microbial communities associated with methane hydrate ecosystem. Presently, in many countries, national programs exist for the research and production of natural gas from NGH deposits. As a result, hundreds of deposits have been discovered, with a few hundred wells drilled and kilometres of NGH cores studied. Hence, in the future (pending improved gas price and extraction technology), methane gas hydrates could be a vast source of natural gas supply.

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“…Multichannel seismic represents the most common data to study the pipe structure. The existing knowledge about this type of pipe structure is based on the interpretation of 2D and 3D seismic reflection data [17,[20][21][22]. Multichannel seismic method can provide not only the image of internal structure but also the image of the water column above, which could help to detect the fluid process associated with the pipe structure.…”

Section: Introductionmentioning

confidence: 99%

Seismic Diffraction Analysis of a Fluid Escape Pipe beneath the Submarine Gas Bubble Plume in the Haima Cold Seep Area

Liu

Chen

et al. 2021

Geofluids

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Pipe structures are considered as fluid conduits beneath cold seeps. These structures have been observed in many geological settings and are widely accepted as the most critical pathway for fluid migration. One of such pipe structures in the Haima cold seep region is investigated herein. The pipe structure extends from below the BSR and reaches the seafloor. It is characterized by a string of events with short and strong seismic amplitudes, similar to the string of bead reflections (SBRs) associated with small-scale caves in carbonate reservoirs. This leads to the hypothesis that multiple small-scale bodies exist within the pipe structure. We test this hypothesis by analysis of diffraction waves and numerical seismic modeling. Travel time pattern analysis indicates that the diffractors within the pipe structure caused the rich diffraction waves on the shot records, and the reversed polarity indicates that the diffractors have a lower impedance than the surrounding sediments. These low-impedance bodies are interpreted as gas pockets within the pipe structures. Based on these interpretations, a conceptual model is proposed to describe the fluid migration process within the pipe. Briefly, we propose that gas pockets within the pipe structure could be analogue to the magma chambers located beneath volcanoes and this may provide a new insight into how gases migrate through the pipe structure and reach the seafloor.

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Relationship between fluid-escape pipes and hydrate distribution in offshore Sabah (NW Borneo)

Cited by 27 publications

References 99 publications

A natural gas hydrate system on the Exmouth Plateau (NW shelf of Australia) sourced by thermogenic hydrocarbon leakage

A natural gas hydrate system on the Exmouth Plateau (NW shelf of Australia) sourced by thermogenic hydrocarbon leakage

A Case Study Of Natural Gas Hydrates (NGH) In Offshore NW Sabah: Identification, Shallow Geohazard Implication For Exploration Drilling, Extraction Challenges And Potential Energy Resource Estimation

Seismic Diffraction Analysis of a Fluid Escape Pipe beneath the Submarine Gas Bubble Plume in the Haima Cold Seep Area

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