Effect of heterogeneous hydrate distribution on hydrate production under different hole combinations

Juan He, Xiaosen Li, Zhaoyang Chen, Xiaoliang Huang and Pengfei Shen

Energy, 2023, vol. 283, issue C

Abstract: Few laboratory studies were focused on the effect of heterogeneous hydrate distribution on hydrate production. Herein, in a horizontal pressure vessel with hole density of 8.3 holes/m and hole diameter of 2.5 cm, this effect was defined by depressurization in seven samples with a hydrate saturation of 23.2% under various hole combinations. Hydrate distribution and its heterogeneity degree were represented by the net increase of the electrical resistance during hydrate formation and the corresponding variation coefficient and then compared with depressurization effects. The results showed that hydrate distribution possessed a heterogeneity degree range of 0.96–1.97. Under a large heterogeneity degree, water production was aggravated. Thus, temperature loss and the sensible heat use ratio under one-hole combination was separately increased by 0.21 °C and 0.12, while gas production and hydrate dissociation ratio was reduced by 4.332 L and 3.79%, respectively. An apparent effect of hydrate distribution on water production was observed within 1–2 holes. This effect increased temperature loss by 0.11 °C and the sensible heat use ratio by 0.084, and reduced gas production by 6.564 L. Exceeding 1–2 holes, hole amounts governed severe water production. This work may advantage to understand the influencing mechanism of hydrate distribution on hydrate production.

Keywords: Hydrate distribution; Hydrate dissociation settings; Water production; Sensible heat; Depressurization; Temperature loss (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223025434
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:283:y:2023:i:c:s0360544223025434

DOI: 10.1016/j.energy.2023.129149

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().