Current status and key factors for coalbed methane development with multibranched horizontal wells in the southern Qinshui basin of China

Szczegóły
Opis

Tytuł:: Current status and key factors for coalbed methane development with multibranched horizontal wells in the southern Qinshui basin of China
Autorzy:: Shida Chen
Dazhen Tang
Shu Tao
Yanhui Yang
Longwei Chen
Temat:: CBM
multibranched horizontal wells
production
Qinshui Basin
wellbore collapse
Technology
Science
Źródło:: Energy Science & Engineering, Vol 7, Iss 5, Pp 1572-1587 (2019)
Wydawca:: Wiley, 2019.
Rok publikacji:: 2019
Kolekcja:: LCC:Technology
LCC:Science
Typ dokumentu:: article
Opis pliku:: electronic resource
Język:: English
ISSN:: 2050-0505
Relacje:: https://doaj.org/toc/2050-0505
DOI:: 10.1002/ese3.366
Dostęp URL:: https://doaj.org/article/1038aaf47eca44e3b1447f1433718b30 Link otwiera się w nowym oknie
Numer akcesji:: edsdoj.1038aaf47eca44e3b1447f1433718b30
: Czasopismo naukowe

Full Text Finder

Abstract The Qinshui basin is the most successful area for coalbed methane (CBM) development in China. Since 2008, 45 multibranched horizontal wells (MBHWs) have been put into production in the Fanzhuang block, of which 10 wells have an average daily gas rate (DGR) of >10 000 m3/d. Well 4‐5 with the total gas production of 1.054 × 108 m3 achieved the China's highest DGR of 63 744 m3/d. Compared with vertical wells, MBHW is an effective way to develop CBM in low permeability reservoirs in China. However, there are still 23 wells have an average DGR of 16 m3/t) and saturation (>80%), long coal seam interval (>3000 m), reasonable branch spread, and stable wellbore are the basis for achieving high production. The encountered faults connected to the aquifer will cause a high water production and an extremely low gas rate (

Informacja