Downhole tool actuators and indexing mechanisms

A downhole tool indexer comprising:

• an outer sub, the outer sub having an inner surface defining a control apparatus bore;
• a control pin, the control pin positioned within the control apparatus bore and mechanically coupled to the outer sub;
• a control assembly, the control assembly positioned within the control apparatus bore, the control assembly being tubular and defining a control assembly bore, the control pin positioned at least partially within the control assembly bore, the control assembly including:
• a control piston;
• a control piston spring, the control piston spring positioned between a dynamic control spring stop of the control assembly and a fixed control piston spring stop mechanically coupled to the outer sub;
• a ratchet mandrel, the ratchet mandrel mechanically coupled to the control piston;
• and
• a low flow ratchet sleeve, the low flow ratchet sleeve mechanically coupled to the ratchet mandrel, the low flow ratchet sleeve including one or more upper low flow ratchet teeth and one or more lower low flow ratchet teeth;
• a stroking assembly, the stroking assembly positioned within the control apparatus bore, the stroking assembly being tubular and defining a stroking assembly bore, the stroking assembly including:
• a stroking mandrel, the stroking mandrel being tubular and defining a stroking assembly bore;
• a stroking piston mechanically coupled to the stroking mandrel;
• a stroking piston spring;
• and
• a spline barrel, the spline barrel including a spline projection, the spline barrel coupled to the stroking mandrel such that the spline barrel is rotatable relative to the stroking mandrel;
• and
• a pocket assembly, the pocket assembly mechanically coupled to the outer sub, the pocket assembly including:
• a reset sleeve, the reset sleeve including a first reset slope and a second reset slope;
• a high flow ratchet sleeve, the high flow ratchet sleeve including one or more upper high flow ratchet teeth and one or more lower high flow ratchet teeth, the reset sleeve and high flow ratchet sleeve defining a first spline pocket and a second spline pocket, the reset sleeve and high flow ratchet sleeve defining a first transition slot and a second transition slot between the first spline pocket and second spline pocket, the spline projection of the stroking assembly positioned within the first or second spline pocket;
• and
• an orientation spacer, the orientation spacer mechanically coupled to the reset sleeve and the high flow ratchet sleeve.

A downhole tool control apparatus comprising:

• an outer sub, the outer sub having an inner surface defining a control apparatus bore;
• a control pin, the control pin positioned within the control apparatus bore and mechanically coupled to the outer sub;
• a control assembly, the control assembly positioned within the control apparatus bore, the control assembly being tubular and defining a control assembly bore, the control pin positioned at least partially within the control assembly bore, the control assembly including:
• a control piston;
• a control piston spring, the control piston spring positioned between a dynamic control spring stop of the control assembly and a fixed control spring stop mechanically coupled to the outer sub;
• a ratchet mandrel, the ratchet mandrel mechanically coupled to the control piston;
• and
• a low flow ratchet sleeve, the low flow ratchet sleeve mechanically coupled to the ratchet mandrel, the low flow ratchet sleeve including one or more low flow ratchet teeth;
• a stroking assembly, the stroking assembly positioned within the control apparatus bore, the stroking assembly being tubular and defining a stroking assembly bore, the stroking assembly including:
• a stroking mandrel, the stroking mandrel being tubular and defining a stroking assembly bore;
• a stroking piston mechanically coupled to the stroking mandrel;
• a stroking piston spring positioned between a dynamic stroking spring stop and a fixed spring stop mechanically coupled to the outer sub;
• and
• a spline barrel, the spline barrel including a spline projection, the spline barrel coupled to the stroking mandrel such that the spline barrel is rotatable relative to the stroking mandrel;
• and
• a spline pocket formed on the inner surface of the outer sub, the spline pocket including a lower boundary, an upper boundary, a reset boundary, and an exit boundary, the lower boundary including a reset slope, the upper boundary including at least one high-flow ratchet tooth, wherein the spline projection of the stroking assembly is positioned within the spline pocket.

A downhole tool control apparatus comprising:

• an outer sub, the outer sub being tubular, the outer sub having an inner surface defining a control apparatus bore;
• a stroking assembly, the stroking assembly positioned within the control apparatus bore, the stroking assembly including:
• a stroking mandrel;
• and
• a spline barrel, the spline barrel including a spline projection, the spline projection extending radially outward from the spline barrel, the spline barrel coupled to the stroking mandrel such that the spline barrel is rotatable relative to the stroking mandrel;
• and
• a spline pocket formed on the inner surface of the outer sub, the spline pocket including a lower boundary, an upper boundary, a reset boundary, and an exit boundary, the lower boundary including a reset slope, the upper boundary including at least one high-flow ratchet tooth, wherein the spline projection of the stroking assembly is positioned within the spline pocket.