Testing method of hydraulic bottomhole motor

FIELD: machine building.

SUBSTANCE: invention is used for run-in and test of hydraulic bottomhole motor (HBM). When testing HBM 1, it is installed in a vertical position above well 2 of its further operation and attached to housing A by means of spinning wrench 3 on stationary drilling outfit 4 of well 2. Outlet shaft 5 of spindle 6 of HBM 1 is attached through coupling device 7 to inlet shaft 8 of multiplier 9 installed on rotary table 10. Rotation of rotor 11 with spindle 6 is performed by injection of working fluid to HBM 1 through adapter 12 of pump station 13 of drilling outfit 4 of well 2. Mechanical loading of outlet shaft 5 of spindle 6 is performed through multiplier 9 kinematically connected at its outlet shaft 15 to powder brake 17, with further measurement and analysis of revolutions and braking moments at the outlet of the latter, and flow rate and pressure of working fluid at HBM 1 inlet.

EFFECT: improving accuracy of the method and its approximation to HBM operating conditions.

1 dwg

 

The invention relates to the field of engineering and is used for running and testing of hydraulic downhole motors.

There is a method of testing of hydraulic downhole motor (HDM), including the installation and fastening of HDM, the rotation of its rotor spindle discharge of the working fluid in HDM through the sub and mechanical loading of the output shaft of the spindle kinematically associated with powder brake, with subsequent measurement and analysis of momentum, and moment of braking the output of the last and flow rate, and pressure of the working fluid at the inlet of HDM - perceived from the description of the patent RU No. 2410662 C2 invention "Stand for break-in and testing of hydraulic downhole motors", publ. 27.01.2011.

By its characteristics and the achieved result this method is most similar to the claimed and adopted for the prototype.

There is a method of testing performed in a dedicated test facility. HDM establish and fix in a horizontal position on a special stand, whereby the output shaft of the spindle HDM, bearing assemblies and two alternately used powder brakes are connected in-series with each other by means of coupling sleeves.

The disadvantage of this method is the low accuracy testing and isolation from the conditions of HDM.

- The first result of the present invention is to improve the accuracy of the testing method and approach it to the actual operating conditions of HDM.

The mentioned technical result is achieved in that in the method of testing HDM, including the installation and fastening of HDM, the rotation of its rotor spindle discharge of the working fluid in HDM through the sub, a mechanical loading of the output shaft of the spindle, kinematically associated with powder brake, with subsequent measurement and analysis of momentum and moment of braking the output of the last, and flow and pressure of the working fluid at the entrance to HDM, according to the invention HDM installed in vertical position over the well its subsequent operation and fix the casing drilling key on a regular rig well, the output spindle shaft through coupling fasten with input shaft multiplier mounted on the rotary table of the drilling rig, the rotation of the rotor spindle carried out by injection of the working fluid in HDM through the sub pumping station rig wells, and the mechanical loading of the output shaft of the spindle passes through the multiplier, kinematically connected to its output shaft with a powder brake.

The essence of the proposed method explained in the description with reference to the accompanying drawing; thin lines show the rig and its components.

In the testing method according to the invention GSD installed in the vertical position the NII well over 2 subsequent operation and fix the casing And drilling key 3 on the standard rig 4 wells 2. The output shaft 5 of the spindle 6 through the coupling device 7 is fastened to the input shaft 8, for example, conical multiplier 9, mounted on the rotary table 10 drilling rig 4. The rotation of the rotor 11 with the spindle 6 is performed by the injection of the working fluid in GSD through sub 12 (with sensor flow Q and pressure P) pump station 13 standard rig 4 wells 2. Drainage the spent working fluid at the exit GSD is hydrocloric (not shown) using hydrotroilite 14.

Mechanical loading of the output shaft 5 of the spindle 6 passes through the multiplier 9, kinematically connected to its output shaft 15 clutch coupling B with rotor 16 powder brake 17 established, for example, on the Foundation of the rig 4, and speed sensors 18 and moments braking 19 powder brake 17, the known structures used in the industry.

The execute method with the described characteristics allows to use when testing HDM standard equipment of drilling rig well and get results, practically relevant operational situations that arise in a particular drilling rig.

When implementing the method of testing HDM all controlled parameters are set, monitored and documented using the computer with the remote control (not the CSP is shown).

Thus, the proposed method provides more accurate testing and brings it closer to the real conditions of operation of HDM.

The method of testing of hydraulic downhole motor (HDM), including the installation and fastening of HDM, the rotation of its rotor spindle discharge of the working fluid in HDM through the sub, a mechanical loading of the output shaft of the spindle, kinematically associated with powder brake, with subsequent measurement and analysis of momentum and moment of braking the output of the last, and flow and pressure of the working fluid at the inlet of HDM, characterized in that the HDM is installed in vertical position over the well its subsequent operation and fix the casing drilling key on a regular rig well, the output spindle shaft through a coupling fastened to the input shaft multiplier mounted on the rotary table of the drilling rig, the rotation of the rotor spindle carried out by injection of the working fluid in HDM through the sub pumping station rig wells, and the mechanical loading of the output shaft of the spindle passes through the multiplier, kinematically connected to its output shaft with a powder brake.



 

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