Details

Autor(en) / Beteiligte

• GU, Jun
• WANG, Shuai
• MA, Chao
• GAN, Pin
• TANG, Naiqian

Titel

Influence of Drilling Fluid Components on Shear Strength at Cement-aquifuge Interface in Coalbed Methane Wells

Ist Teil von

• Acta geologica Sinica (Beijing), 2017-08, Vol.91 (4), p.1511-1512

Auflage

English ed.

Ort / Verlag

Richmond: Wiley Subscription Services, Inc

Erscheinungsjahr

2017

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• The hydraulic fracturing is still an effective technology for the exploitation of coalbed methane （CBM）. However, after the hydraulic fracturing operation, the high water cut or sudden water flooding of CBM well usually occurs due to upward migration of bottom water, which is called water channeling （water inrush）. This problem has been severely limiting the hydraulic fracturing effect of CBM wells. Some studies show that the aquifuge and cement paste themselves will not crush under hydraulic fracturing pressure. Water channeling often occurs at cement- aquifuge interface （CAI）.