The difference between the downhole screw pump and downhole screw drill tool

downhole screw pump, downhole screw drill tool

a downhole screw water pump mainly includes the hydraulic part ( Is embedded in the stator) And drive part, drive part by means of connecting rod pass axis rotation to hydraulic parts. This connection can be done in a number of ways: hinge connection, connection ( Such as the universal joint) Or flexible connection device. Drive ( Engine, diesel engine or other prime mover) Connected to the input shaft, of the energy is converted into mechanical energy. Shaft of the bearing support parts by the driver, drive shaft rotation driven hydraulic parts of the rotor eccentric movement. In the chamber formed between rotor and stator. The eccentricity of the rotor movement displacement intraluminal fluid & other; Mobile & throughout; （ In terms of a propulsion) , the fluid along the axial direction from the suction ( Imports) To the exports ( Is to overcome the outlet pressure of lifting liquid) 。 Because of the fluid is actually the mechanical displacement, so all kinds of screw pump belongs to a branch of rotary pump.

if you connect the screw pump & other; Generator & throughout; Instead of electric motor or other load ( For example, bit) , the rotor rotation, driven by the pressure of different pump actually becomes a hydraulic motor, is the result of pumping mechanical terms ( Note: the operation of the hydraulic turbine reversal with pipeline pump movement similar) 。 The use of fluid energy converted into mechanical energy of rotating shaft & ndash; — From the eccentric rotor, through the connecting rod to the drive shaft, and then to the load. Therefore, when the mechanical energy into hydraulic energy for downhole screw pump; On the contrary, when the hydraulic energy into mechanical rotational energy as a hydraulic motor. In oilfield exploration drilling, such reversal operation of the device is called & other; Downhole screw drill tool & throughout; , it used drilling fluid as working fluid drive of stator and rotor, lubrication drill and scour carrying cuttings at the same time. In this case, the hydraulic part ( The rotor and stator) Called & other; Drive part & throughout; It is used to transfer power drill. Figure 2 - 3 is a set of complete drilling equipment ( Downhole screw drill tool) Part, it includes its own power, bearing, seal, drill bit, centralizer and other auxiliary equipment. Such a device, Oilfield drilling crews called & other; String & throughout; ） By the downhole screw drilling tools, pipe and drilling agencies, all these devices were down into the eyes of the well and in operation. On the ground, usually use sludge screw pump or reciprocating pump to pump fluid into the underground.

downhole screw pump and downhole screw drill tool structure is as follows:

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