Apparatus, systems and methods for mitigating solids accumulation within the wellbore during stimulation of subterranean formations

1. A process for conducting a slurry through a wellbore of a subterranean formation, comprising:

within the wellbore, while the conducting is being effected, agitating the conducted slurry with a fluid motion-actuating tool;

wherein:

the conducted slurry includes stimulation material;

the conducting includes conducting of the stimulation material to the subterranean formation, with effect that the subterranean formation is stimulated by the stimulation material for producing hydrocarbon material; and

the agitation is with effect that the agitated slurry, being conducted through the wellbore, is characterized by a Reynolds number of at least 4000.

2. The process as claimed in claim 1 ;

wherein the fluid motion-actuating tool is coupled to a workstring that is conveyable within the wellbore.

3. The process as claimed in claim 1 ;

wherein the agitation is effected within a horizontal section of the wellbore.

4. The process as claimed in claim 1 ;

wherein the agitating is effected at a total measured depth of at least 13,000 feet.

5. The process as claimed in claim 2 ;

wherein the slurry is conducted within a space between the workstring and the subterranean formation.

6. The process as claimed in claim 2 ;

wherein:

the wellbore is lined with a wellbore string; and

the slurry is conducted within a space between the workstring and the wellbore string.

7. The process as claimed in claim 2 ;

wherein:

the agitating is effected in response to movement of the workstring; and

the fluid motion-actuating tool actuates movement of the workstring.

8. The process as claimed in claim 5 ;

wherein the agitation is effected within a horizontal section of the wellbore.

9. The process as claimed in claim 8 ;

wherein the agitating is effected at a total measured depth of at least 13,000 feet.

10. The process as claimed in claim 7 ;

wherein the movement of the workstring, actuated by the fluid motion-actuating tool, includes a vibrational movement.

11. The process as claimed in claim 5 ;

wherein the fluid motion-actuating tool includes a coiled tubing agitator tool.

12. The process as claimed in claim 6 , further comprising:

suspending the conducting of the slurry; and

displacing the workstring through the wellbore in a downhole direction;

wherein:

the agitating is effected at a total measured depth of at least 13,000 feet;

the displacing is effected in the absence, or substantial absence, of urging by fluid material disposed within a space between the workstring and the wellbore string.

13. The process as claimed in claim 2 , further comprising:

suspending the conducting of the slurry; and

displacing the workstring through the wellbore in a downhole direction;

wherein:

the agitating is effected at a total measured depth of at least 13,000 feet;

the displacing includes displacing that is effected in response to urging by displacement-actuating fluid material being conducted downhole within a space between the workstring and the subterranean formation; and

the flow rate of the displacement-actuating fluid material is less than five (5) barrels per minute.

14. The process as claimed in claim 3 ;

wherein the agitating is effected at a total measured depth of at least 13,000 feet.

15. The process as claimed in as claimed in claim 1 ;

wherein:

the conducted slurry includes the stimulation material and solid particulate material; and

the conducted slurry is characterized by a concentration of solid particulate material between 1 pounds per gallon of the stimulation material to 8 pounds per gallon of the stimulation material.