Fluid pulse generation in subterranean wells

A fluid pulse generator for use with a subterranean well, the fluid pulse generator comprising:

• a fluid motor including a rotor configured to rotate in response to fluid flow through the fluid motor;
• a variable flow restrictor positioned upstream of the fluid motor, the variable flow restrictor including a restrictor member rotatable by the rotor relative to a ported member to thereby variably restrict the fluid flow;
• and
• at least one of the group consisting of a flex joint and a constant velocity joint connected between the restrictor member and the rotor.

A fluid pulse generator for use with a subterranean well, the fluid pulse generator comprising:

• a fluid motor including a rotor configured to rotate in response to fluid flow through the fluid motor;
• and
• a variable flow restrictor positioned upstream of the fluid motor, the variable flow restrictor including a valve and a fluidic restrictor element, and the valve being operable in response to rotation of the rotor,
• in which the fluidic restrictor element is configured to generate fluid pulses in response to the fluid flow through a first flow path, and the valve is configured to control the fluid flow through a second flow path connected in parallel with the first flow path.