TY  - JOUR
N2  - Coiled Tubing (CT) services are extensively used in oil industry to clean out the fill produced from wellbore. Recently, the use of foam as cleaning agent has become more popular due to its low density and high viscosity which are desirable in many cleaning operations. The present study is carried out to investigate the suspension of fines in the annulus of CT during cleaning operations. Solid particles were uniformly injected at annulus inlet and sand concentration at each point in the annular was calculated along the horizontal wellbore section. The motion of the particles is calculated under the effect of drag, buoyancy, rotational and virtual mass forces to analyze the settlement of the particles. The foam quality and foam velocity are found to be the deciding factors for the particle depositional pattern. The fill removal efficiency and frictional pressure loss are affected by both the velocity of the annular flow and the quality of the foam. © Maxwell Scientific Organization, 2013.
IS  - 14
ID  - scholars3959
Y1  - 2013///
JF  - Research Journal of Applied Sciences, Engineering and Technology
A1  - Khan, J.A.
A1  - Pao, K.S.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881271592&doi=10.19026%2frjaset.6.3754&partnerID=40&md5=2584094d332f54be11c14d641f9c54a4
VL  - 6
AV  - none
N1  - cited By 12
SP  - 2655
TI  - Fill removal with foam in horizontal well cleaning in coiled tubing
PB  - Maxwell Science Publications
SN  - 20407459
EP  - 2661
ER  -