CN208578518U

CN208578518U - Drilling speed tool

Info

Publication number: CN208578518U
Application number: CN201821337663.2U
Authority: CN
Inventors: 付正兵; 傅红兵; 刘文彬; 杜杨
Original assignee: YICHANG SHENDA PETROMACHINE CO Ltd
Current assignee: Yichang Shenda Technology Co., Ltd
Priority date: 2018-08-20
Filing date: 2018-08-20
Publication date: 2019-03-05
Anticipated expiration: 2028-08-20

Abstract

The utility model relates to drilling speed tools, including hollow housing, the case top is fixedly installed connector, the connector with drill string for connecting, ring-type concave is offered in the shell, torsion transmitting assembly is provided in the ring-type concave, the torsion transmitting assembly includes hollow torsional axis and the helical torsional spring piece along torsional axis circumferentially, helical torsional spring piece one end is fixedly connected with the torsional axis, the other end is fixedly connected with the casing, and the lower end of the torsional axis is connect with drill bit.The utility model is played in the case where drill bit occurs sticking phenomenon and overcomes the two states of sticking phenomenon; pass through the huge torque of self-deformation snubber drill string bring; play the role of protecting drill bit and drill string; the destruction to drill bit can be reduced simultaneously; drill bit failures rate is reduced, so that drilling process is more stable.

Description

Drilling speed tool

Technical field

The utility model relates to drill bit corollary equipment technical field more particularly to a kind of drilling speed tools.

Background technique

As each energy block exploitation exploration in China puts more effort, well the more bores the more deep, and drilling strata is increasingly complicated.Stick-slip is existing As if PDC drill bit, in the main restricting factor that bad ground rate of penetration is low, drilling efficiency is low, the phenomenon is especially in hard place It is expressively become apparent in layer, deep-well drilling, more acutely.

It is had the following problems in drilling process:

1) when the torque that drill string is supplied to drill bit is less than the shearing limit of rock on working face, drill bit stopping follows drill string Rotation, drill bit is in viscous state at this time；

2) when the torque put aside in drill string is greater than the rock shearing limit on working face, in drill string torque by abrupt release, So that drill bit is done irregular variable motion around axial, very big destruction is caused to drill bit, leads to that drill bit drilling well is unstable, failure Rate is high, service life is short.

Therefore it needs to develop the drilling speed tool for improving disadvantages described above.

Utility model content

The purpose of this utility model is to provide drilling speed tool for the deficiency in above-mentioned background technique, existing to solve There is in technology drill bit in drilling process the technical issues of high failure rate.

To achieve the above object, the utility model uses the following technical solution:

Drilling speed tool, including hollow housing, the case top are fixedly installed connector, and the connector is used for It is connect with drill string, ring-type concave is offered in the shell, torsion transmitting assembly, the torsion are provided in the ring-type concave Transmitting assembly includes hollow torsional axis and the helical torsional spring piece along torsional axis circumferentially, the helical torsional spring piece One end is fixedly connected with the torsional axis, and the other end is fixedly connected with the casing, and the lower end of the torsional axis is connect with drill bit.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a kind of drilling speed tool, by opening up ring-type concave in shell, and in ring-type Torsion transmitting assembly is set in concave station, the huge torsion that drill string is put aside when by torsion transmitting assembly cushioned drill bit under viscous state Square can protect drill string；

When starting at the beginning of drill string, helical torsional spring piece is driven by housing into rotation, helical torsional spring piece is transmitting at this time While torque, itself can deformation occurs, and the slow starting of drill bit may be implemented, and plays the role of protecting drill bit and auxiliary connection, Simultaneously when stopping drilling well suddenly, helical torsional spring piece can be risen again by the effect of inertia of self-deformation cushioned drill bit To the protective effect to drill bit；

In addition, drill bit stops operating suddenly when sticking phenomenon occurs suddenly in drilling process, drill string can be put aside huge Torque, helical torsional spring piece plays buffer function to the huge torque that drill string is put aside by the deformation of itself at this time, to protect Protecting drill string reduces the irregular of drilling well but also drilling well is more stable when sticking phenomenon occurs and when sticking phenomenon overcomes Vibration.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of torsion transmitting assembly in the utility model；

Fig. 3 is the bottom view of torsion transmitting assembly in the utility model.

Specific embodiment

The technical solution in the utility model is further illustrated with reference to the accompanying drawings and embodiments.

As shown in Figure 1-Figure 3, as a kind of preferred embodiment, the utility model proposes drilling speed tools, including in Empty capsid 10 is fixedly installed connector 11 at the top of the shell 10, and connector 11 is connect with 10 preferred weld of shell, the company Connector 11 offers ring-type concave 12, is provided with torsion in the ring-type concave 12 for connecting with drill string in the shell 10 Transmitting assembly 20, the torsion transmitting assembly 20 include hollow torsional axis 21 and the screw twisted along torsional axis 21 circumferentially Spring leaf 22, described 22 one end of helical torsional spring piece are fixedly connected with the torsional axis 21, the other end and the fixed company of shell 10 It connects, the lower end of the torsional axis 21 is connect with drill bit 30, and torsional axis 21 is preferably threadedly coupled with drill bit 30；The structure of drill bit 30 and Function be it is well-known to those skilled in the art, therefore, not repeat them here.

The working principle of above scheme is such that when starting at the beginning of drill string, is rotated by shell 10 and is driven screw twisted bullet Reed 22, for helical torsional spring piece 22 while transmitting torque, itself can deformation occurs at this time, and the slow of drill bit 30 may be implemented Slow turn-on plays the role of protecting drill bit 30 and auxiliary connection, while when stopping drilling well suddenly, and helical torsional spring piece 22 can be with By the effect of inertia of self-deformation cushioned drill bit 30, the protective effect to drill bit 30 is again served to；

In addition, drill bit stops operating suddenly when sticking phenomenon occurs suddenly in drilling process, drill string can be put aside huge Torque, helical torsional spring piece 22 plays buffer function to the huge torque that drill string is put aside by the deformation of itself at this time, thus Drill string is protected to reduce not advising for drilling well but also drilling well is more stable when sticking phenomenon occurs and when sticking phenomenon overcomes Then shake.

Preferably, the full lubrication of the interior filling of helical torsional spring piece 22 between the torsional axis 21 and the shell 10 Rouge.When sticking phenomenon occurs, drill bit, which is stuck in rock stratum, to be rotated, and helical torsional spring piece is certainly in the torsion of drill string at this time Lubricating grease is squeezed out downwards along torsional axis 21, is lubricated to drill bit 30, to reduce drill bit 30 by deformation after the lower generation of square effect The shear force received shortens the viscous period, can not only effective protection drill bit, reduce drill bit failures rate, moreover it is possible to improve drilling well Efficiency.

Preferably, the height of the helical torsional spring piece 22 is 1.2-2 times of 10 diameter of shell.It sets in this way The purpose set is to reach better torque transmission effect to guarantee that helical torsional spring piece 22 is able to bear enough torques.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model It encloses, should all cover in the scope of the claims of the utility model.

Claims

1. drilling speed tool, it is characterised in that: including hollow housing, the case top is fixedly installed connector, described Connector offers ring-type concave, torsion transmitting group is provided in the ring-type concave for connecting with drill string in the shell Part, the torsion transmitting assembly include hollow torsional axis and the helical torsional spring piece along torsional axis circumferentially, the spiral shell Turn-knob turns spring leaf one end and is fixedly connected with the torsional axis, and the other end is fixedly connected with the casing, the lower end of the torsional axis with Drill bit connection.

2. drilling speed tool according to claim 1, it is characterised in that: the spiral shell between the torsional axis and the shell Turn-knob turns to fill full lubricating grease in spring leaf.

3. drilling speed tool according to claim 1, it is characterised in that: the torsional axis is connect with drill bit thread.

4. drilling speed tool according to claim 1 or 2, it is characterised in that: the height of the helical torsional spring piece It is 1.2-2 times of the diameter of the housing.

5. drilling speed tool according to claim 1, it is characterised in that: the connector and the case weld connect It connects.