A series of laboratory experiments were conducted to determine the carrying capacity of liquids flowing through annulus of inclined pipes. Water and CMC solutions were used as transport media. The velocity and behavior of movement of cuttings were measured by means of a movie camera.
Results obtained are as follows:
1. With a higher liguid velocity the carrying capacity is not affected by the inclination of pipes. But with a lower liquid velocity the capacity is decreased by the inclination of pipes.
2. The carrying capacity is increased slightly by the rotation of an internal pipe.
3. When the pipes are kept vertical the cuttings rotate with one third velocity of an internal pipe. When the pipes are kept incalined the cuttings do not rotate practically.
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