Patent ID: 9133664
Filing Date: 2015-09-15
Classification: E21B

Abstract:
1. An apparatus for generating pressure pulses in a drilling fluid flowing and enhancing completing a well bore within a coiled tubing assembly comprising: a flow throttling device longitudinally and axially positioned within the center of a main valve actuator assembly, said main valve actuator assembly comprising a main valve pressure chamber, a magnetic cup encompassing a rotary magnetic coupling containing at least one magnet adjacent to a drive shaft wherein said magnetic cup is located within a pilot actuator assembly, said pilot actuator assembly including a pilot orifice with a pilot valve, a pilot flow shield, a bellows and an anti-rotation block such that passage of said drilling fluid flows through a pilot flow screen and further flows into a main flow entrance into a flow cone through a main orifice and into a main valve past the main valve pressure chamber past a set of seals and through a main valve support block toward a flow seal guide where said fluid combines with a pilot exit fluid that flows toward a main exit flow such that as said fluid becomes a pilot fluid, said pilot fluid subsequently flows through said pilot flow screen into said pilot flow screen chamber through a pilot flow upper annulus, through a pilot flow lower annulus and into a pilot flow inlet channel, wherein said pilot fluid then flows up into a main valve feed channel until it reaches the main valve pressure chamber such that said pilot fluid flows back down a main valve feed channel through a pilot flow exit channel through said pilot orifice and said pilot valve such that said pilot fluid exits said pilot valve and said pilot fluid then flows over said pilot flow shield such that said pilot fluid combines with said main flow to become a main exit flow fluid, said main exit flow fluid then exits a pilot valve support block and flows on either side of said magnetic cup including said rotary magnetic coupling and wherein one or more pressure sensors measuring the pressure of flowing fluid is located inside said pilot valve support block upon which a helical pulser support rests wherein said pilot valve support block also houses an annular pressure sensor residing in an annular pressure inlet and wherein a lower portion of said pilot valve support block also contains a helically cut cylinder that mates with and rests on the helical pulser support that is mounted securely in a tubular hang-off collar such that said annular pressure inlet is aligned with one or more collared annular pressure ports thus still allowing said main exit flow fluid to flow past the drive shaft and motor such that said pilot fluid and main exit flow fluid causes one or more flow throttling devices to generate large, rapid controllable pulses thereby allowing transmission of well-developed signals easily distinguished from any noise resulting from other vibrations due to nearby equipment within said borehole or exterior to said borehole, or within said coiled tubing assembly, wherein said signals also are capable of providing predetermined height, width and shape.