CN207795050U - A kind of frequency low-amplitude complex vibration impactor - Google Patents

Abstract

The utility model discloses a kind of frequency low-amplitude complex vibration impactors, including shell, diversion cup, reverse impactor, drive joint, hammering block, double female connectors, outer casing underpart to be connect with drive joint, installs diversion cup and reverse impactor in the shell；Diversion cup is " V " shape funnel-shaped part, and diversion cup lower port is communicated with the entrance of reverse impactor, and connection type is to be threadedly coupled；Reverse impactor is together by a threaded connection with drive joint, and hammering block is mounted on drive joint inside bottom, and hammering block bottom male thread is connected with box thread on double female connectors, and box thread is connected with drill bit under double female connectors.The utility model realizes axial and circumferential complex vibration and impacts, and improves efficiency of breaking rock；Axial vibration and rotational vibration function integration are realized, tool length is shortened；It is simple in structure, it is of low cost；Construction is simple is easy, securely and reliably.

Description

A kind of frequency low-amplitude complex vibration impactor

Technical field

The utility model is related to oil and gas well drilling technical field, especially a kind of frequency low-amplitude complex vibration impact Device.

Background technology

With the development that petroleum exploration in China is developed, the exploration and development in new district constantly expands, and the depth of producing well constantly adds Deep, the stratum of entrance is more and more older, and drilling strata becomes increasingly complex, and rock is also increasingly harder, and power linear loss is big, fluid column pair The chip hold down effect in shaft bottom is apparent, and bit speed is slow, seriously constrains the process of oil-gas field development.Therefore, both at home and abroad to how to carry High well drilling and rock crushing efficiency, pays much attention to improve bit speed.

The liquid such as drilling fluid have higher energy transfer efficiency than solids such as tubing strings, therefore can enough energy be passed to well Bottom solves the problems, such as that deep-well capacity usage ratio is low.Meanwhile drilling tool extensional vibration can also better adapt to firm hard formation, solve deep The hard problem in well stratum.For this purpose, proposing that pulsing jet and two class technology of impact vibration drilling well have complementary advantages, that are overcome This deficiency develops a kind of drilling well impactor that operation principle is completely new, i.e., close bit hydraulic pulse oscillating impactor.

Impactor is pulsed using bottom hydraulic, applies periodic shock active force appropriate to drill bit, by improving shaft bottom The force-bearing situation of neighbouring rock or drill bit is oneself to facts have proved effective technology hand to improve the broken rock drilling efficiency of drill bit Section.Currently, the axial vibration percussion tool and rotational vibration percussion tool of existing simple function, and composite impact vibratory impulse Tool it is still inadequate, how to realize that complex vibration impact solves the problems, such as that the difficult brill of deep formation is very crucial.

Utility model content

Technical problem to be solved by the utility model is to provide a kind of frequency low-amplitude complex vibration impactors, solve mesh Preceding probing medium and deep stratum abrasiveness is strong, and soft or hard staggeredly drill bit wedging stratum effect is poor, and PDC drill bit blocks in drilling to be slided seriously, The problems such as drill bit failure is fast is realized and improves efficiency of breaking rock.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of frequency low-amplitude complex vibration Impactor, including shell, diversion cup, reverse impactor, drive joint, hammering block, double female connectors, outer casing underpart connect with drive joint It connects, diversion cup and reverse impactor is installed in the shell；Diversion cup is " V " shape funnel-shaped part, diversion cup lower port and torsion The entrance of impactor communicates, and connection type is to be threadedly coupled；Reverse impactor is together by a threaded connection with drive joint, anvil Son is mounted on drive joint inside bottom, and hammering block bottom male thread is connected with box thread on double female connectors, female spiral shell under double female connectors Line is connected with drill bit.

6 tap holes are distributed in the diversion cup upper end.

Runner is machined with inside the drive joint, top upstream face is plane, and edge is Rouno Cormer Pregrinding Wheel, drive joint It is connected using sealing between shell.

The utility model has the beneficial effects that：It realizes axial and circumferential complex vibration to impact, improves efficiency of breaking rock；It is real Show axial vibration and rotational vibration function integration, shortens tool length；It is simple in structure, it is of low cost；Construction is simple is easy Row, securely and reliably.

Description of the drawings

Fig. 1 is the utility model frequency low-amplitude complex vibration impactor schematic diagram.

Fig. 2 is rotational vibration initial position figure.

Fig. 3 is rotational vibration final position figure.

Fig. 4 is rotational vibration critical localisation figure.

In figure, 1. shells, 2. diversion cups, 3. Hydro-efflux Hammer shells, 4. Hydro-efflux Hammers, 5. drive joints, 6. hammering blocks, 7. couples of mothers connect Head, 8. Hydro-efflux Hammer glands, 9. starters, 10. central tubes, 11. nozzles, 12. impulse hunting chambers, 13. reverse impactors.

Specific implementation mode

The utility model is described in further detail with reference to the accompanying drawings and detailed description：

As shown in Figure 1, the frequency low-amplitude complex vibration impactor of the utility model, including shell 1, diversion cup 2, torsion punching Device 13, drive joint 5, hammering block 6, double female connectors 7 are hit, 1 lower part of shell is connect with drive joint 5, and diversion cup is installed in shell 1 2 and reverse impactor 13；Diversion cup 2 is " V " shape funnel-shaped part, the entrance phase of 2 lower port of diversion cup and reverse impactor 13 Logical, connection type is to be threadedly coupled；Reverse impactor 13 is together by a threaded connection with drive joint 5, and hammering block 6, which is mounted on, to be passed 5 inside bottom of dynamic connector, 6 bottom male thread of hammering block are connected with box thread on double female connectors 7,7 times box threads of double female connectors and brill Head is connected.

Specifically, the utility model frequency low-amplitude complex vibration impactor is mounted below drill collar, above drill bit.Torsion Impactor 13 is existing equipment, has Hydro-efflux Hammer 4, the symmetrical hammer anvil in 4 outer surface of Hydro-efflux Hammer to be located at impactor in reverse impactor 13 In the punching groove of shell 3；These structures together constitute three fluid channels, i.e. center throttling passage, Hydro-efflux Hammer drives channel With unidirectional driving channel；Impulse hunting chamber 12 is by being mounted in the air deflector of center converge nozzle 11 and 3 lower contact of impactor shell It collectively forms.The utility model can be achieved at the same time rotational vibration impact and be impacted with axial vibration, improves drill bit efficiency of breaking rock, fits For soft or hard staggeredly stratum.

1 short circuit of shell is the external structure high-strength alloy short circuit for encapsulating each component of frequency low-amplitude complex vibration impactor. Under the premise of ensureing each portion's movable part stable motion, shell 1 will bear the bit pressure that top drill collar generates, rotation torque, curved Square and drilling fluid inside and outside differential pressure.It presses, turn round, the main outer load that curved load is subject to for shell 1.

Secondly the size of 1 short circuit of shell wants reasonable design, cannot be too big, can not be too small.Size is too big, can cause to impact The spacing of device and the borehole wall is too small, increase drilling fluid by resistance, influence the normal work of bottomhole assembly.Size is too small, Underpower or the wall thickness of impactor can be caused inadequate, influence the safety of impactor underground work.

Diversion cup 2 is a V-arrangement funnel-shaped part, and 2 lower port of diversion cup is communicated with the entrance of central tube 10, connection type To be threadedly coupled, 6 tap holes are distributed in 2 upper end of diversion cup；Drilling fluid is divided into two strands inside and outside, outside by diversion cup 2 Fluid flow to high pressure runner, be flowed into the reversing groove in starter 9 by pressure hole, commutation keyhole, it is uninterrupted to starting 9 feed flow of device；Remaining internal flow gives central tube 10 feed flow.

The major function of Hydro-efflux Hammer shell 3 is to bear torsional pulse power, placement starter 9, hydraulic hammer and central tube 10 etc., And the functions such as driving torque.

Torsional pulse power is generated by 4 shock surface repeated stock of Hydro-efflux Hammer.The size-controlled matter in Hydro-efflux Hammer 4 of its impact force Amount, the size of mud flow rate and shock surface.

The lower half portion of the self-excited oscillation cavity is arranged at 3 inner cavity lower part of Hydro-efflux Hammer shell, by matching with 10 lower nozzle 11 of central tube Conjunction forms the self-excited oscillation cavity, forces drilling fluid to generate self-oscillation, forms the pulsing jet of high intensity, act on drive joint 5, Drill bit is set to generate extensional vibration.

Hydro-efflux Hammer shell 3 is the carrier of multiple components such as starter 9, hydraulic hammer and central tube 10, is that frequency low-amplitude is compound The core component of vibrating impactor.Its moving component is all wherein.Driving torque refers to delivering torque to biography by lower contact Dynamic connector 5.

Hydro-efflux Hammer 4 is the moving component of frequency low-amplitude complex vibration impactor impactor core, and major function is to generate instead The torsional pulse moved again, controlled movement is in starter 9.Hydro-efflux Hammer 4 is mainly by hydraulic shock force effect.

Starter 9 is the regulating member that Hydro-efflux Hammer 4 moves, that is, the reversing switch of entire impactor.Its controlled movement In the transformation of fluid high-low pressure.Starter 9 is fixed between 10 three of Hydro-efflux Hammer shell 3, Hydro-efflux Hammer gland 8 and central tube, is Frequency low-amplitude complex vibration impactor nucleus movement component.

Central tube 10 is frequency low-amplitude complex vibration impactor core component, which does not move, be fixed on outside hydraulic hammer Shell 3, and play the role of fixer hammer gland 8.Its function is sufficiently complex, includes mainly following：It is fixed to being actuated for movement Position；Dredge high-pressure fluid；Unsteady flow flow nozzle 11 is installed；Connect air deflector.

Bottom bracing pressure release dish structure includes multiple vertical discharge orifices and several lateral discharge orifices.Its function is mainly two It is a：One is aerial drainage, i.e., be directed to connecting portion under jump bit by the fluid being discharged in punching groove.The second is supporting role, branch Support Hydro-efflux Hammer 4 and starter 9.

Unsteady flow flow nozzle 11 is the regulating member of Hydro-efflux Hammer 4.It generates certain pressure consumption.The size of its final size determines The frequency and torque magnitude of Hydro-efflux Hammer 4.

Together with hydraulic hammer gland 8 and Hydro-efflux Hammer 4, sealing and position-limiting action are played.

Nozzle 11 is centrally disposed the lower part of pipe 10, by cooperatively forming the self-excited oscillation cavity with the inner cavity lower part of hammer shell 3, So that drilling fluid is generated self-oscillation, form high intensity pulses jet stream, drive joint 5 generates extensional vibration.

Drive joint 5 plays function and mainly transmits torsional pulse power, followed by transmits the bit pressure and torque of drill collar, and connects Hammering block 6, eventually by hammering block 6 by impact force, bit pressure, torque passes to drill bit.

Runner is machined with inside drive joint 5, top upstream face is plane, and edge is Rouno Cormer Pregrinding Wheel.Drive joint 5 with It being connected using sealing between shell 1,5 upper face of drive joint is machined with seal groove, reveals to prevent stopping leak and shakes, according to National standard sealing ring specifications design seal groove size.5 middle vehicle of drive joint is fluted, is acted on by clamp spring, to prevent from carrying upper Lower drilling tool falls off when drilling tool, and accident occurs.5 lower end of drive joint is machined with NC50 screw threads, passes through crossover sub and drill bit phase It connects.

Double female connector both ends have box thread, provide the connection of hammering block 6 and drill bit.

Such as Fig. 2, shown in 3,4, Hydro-efflux Hammer shell 3, Hydro-efflux Hammer 4, starter 9, central tube 10 in reverse impactor 13 Relative position is divided into initial position, final position, three kinds of critical localisation, the reciprocally swinging back and forth in Hydro-efflux Hammer shell 3 of Hydro-efflux Hammer 4 Hammer Hydro-efflux Hammer shell 3.

In conclusion the content of the utility model is not limited in the above embodiments, in same area it is insighted it Scholar can easily propose other embodiments within the technological guidance's thought of the utility model, but this embodiment is all wrapped It includes within the scope of the utility model.

Claims (3)

1. a kind of frequency low-amplitude complex vibration impactor, which is characterized in that including shell (1), diversion cup (2), reverse impactor (13), drive joint (5), hammering block (6), double female connectors (7), shell (1) lower part are connect with drive joint (5), in shell (1) Diversion cup (2) and reverse impactor (13) are installed；Diversion cup (2) is " V " shape funnel-shaped part, diversion cup (2) lower port and torsion The entrance for turning impactor (13) communicates, and connection type is to be threadedly coupled；Reverse impactor (13) passes through screw thread with drive joint (5) It links together, hammering block (6) is in drive joint (5) inside bottom, hammering block (6) bottom male thread and double female connectors (7) Box thread is connected, and box thread is connected with drill bit under double female connectors (7).

2. frequency low-amplitude complex vibration impactor according to claim 1, which is characterized in that diversion cup (2) upper end point It is furnished with 6 tap holes.

3. frequency low-amplitude complex vibration impactor according to claim 1, which is characterized in that the drive joint (5) is internal It is machined with runner, top upstream face is plane, and edge is Rouno Cormer Pregrinding Wheel, using sealing between drive joint (5) and shell (1) It is connected.