INFLUENCE OF PROPPANT PARAMETERS ON HYDRAULIC FRACTURE CONDUCTIVITY
Ying Yang1,2, Qiaofei Fu1, Haiyun Yuan2, M. P. Khaidina3, Jianguang Wei1
1North-Eastern Petroleum University, Daqing, China
2CNPC International Turkmenistan, Ashkhabad, Turkmenistan
3Gubkin Russian State University of Oil and Gas, Moscow, Russia
Keywords: Experimental research, coalseam methane, hydraulic fracture conductivity, proppant pressing-in, proppant smashing
Abstract
The authors analyze the influence of proppant parameter on the long-term conductivity of hydraulic fractures. Pressing of proppants in fracture walls and proppant smashing was studied using FCMS-V fracture conductivity system, field emission scanning electron microscope, polarization microscope and the sieve method. The correlations between the conductivity, grain size, grain-size composition, proppant concentration and placement technique, closure pressure of fractures and pressure of proppant pressing-in in the fracture walls are revealed. Pressing and smashing of proppant grains of different size under different closure pressure of fractures is discussed. The recommendations on proppant placement during hydraulic fracturing are given as a case study of methane recovery from coal seams in YC site of Ordos Basin in China.
|
