Li Lei This email address is being protected from spambots. You need JavaScript enabled to view it.1 and Xiaodong Dai1,2

1College of Petroleum Engineering, Shengli College China University of Petroleum, Dongying, P.R. China
2Post-Doctoral Working Station of National University Science Park, China University of Petroleum (East China), Dongying, P.R. China


 

Received: March 19, 2018
Accepted: May 16, 2018
Publication Date: March 1, 2019

Download Citation: ||https://doi.org/10.6180/jase.201903_22(1).0013  

ABSTRACT


Depending on the jet nozzle which can break rock efficiently in the coal-bed methane formation, the radial horizontal well technology can form several horizontal holes with a certain diameter and length, and it can increase the exposed area and improve the production of single coal-bed methane well. In order to solve the problem that the jet nozzle can’t achieve the goal of horizontal holes with large diameter and deep depth simultaneously, the multiple swirling jet nozzle with simple structure was designed. The outflow field of nozzle simulated by SIMPLEC algorithm showed the influence of waterhole arrangement on flow field.The influence law of radius of setting circle, tangential angle and inclined angle on the rock breaking effect were studied by single factor indoor experiments, and reasonable parameter combination was optimized by comprehensive rock breaking test. Preferable CBM field application effect had been achieved in Qinshui Basin of Shanxi and this also could illustrate the value of multiple swirling jet nozzle.


Keywords: Radial Horizontal Well, Swirling Jet, SIMPLEC Algorithm, Laboratory Rock-breaking Experiment, Field Application


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