Pipe nipple under screw fastening type reacting cycle
Technical field
Drilling equipment technical field is the utility model is related to, pipe nipple under espespecially a kind of screw fastening type reacting cycle.
Background technology
In fields such as oil, geological drilling, completion practices, existing drilling model is direct circulation drilling well, i.e., drilling fluid from
Drilling tool endoporus is pumped into, and enters pit shaft after drill bit outflow, is carried drilling cuttings and is returned to stratum by the annular space between drilling tool and the borehole wall, through ground
The processing such as face cleaning system desanding are pumped into drilling tool endoporus so as to form a direct circulation again after safeguarding.
When boring chance leakage stratum, enter stratum from drop ply when drilling fluid returns from shaft bottom, can not normally return out stratum, from
And cause a series of undergrounds complexity and accident.Particularly shallow-layer or top layer drilling well, because buried depth of strata is shallow, crushing rock formation, dredge
Pine, often expend the final still leak stopping of a large amount of human and material resources and fail, cause drilling well work not continue.
The both ends of existing lower pipe nipple structure are plug in construction, in oil drilling construction, drilling tool high speed in well
In the environment of rotation, drilling tool needs to bear huge radial centrifugal force and axial vibration stress, counter under combined stress effect to follow
Ring inner cylinder mechanism and reacting cycle outer barrel produce displacement, easily cause seal failure and inner barrel device deformed damaged.
Utility model content
The purpose of this utility model is to provide pipe nipple under a kind of screw fastening type reacting cycle, and its is simple in construction, ingenious in design, with
When other parts are assembled into upper plug type reverse circulating drilling tool drilling well, conventional direct circulation drilling well can have both been realized, and leakage ground is met boring
During layer, drilling fluid also can be from the upper plug type reacting cycle device of drilling tool by realizing counterflush drilling.
To achieve these goals, technical solution of the present utility model is:Pipe nipple under a kind of screw fastening type reacting cycle, its
Include lower nipple body, the center of the lower nipple body is provided with the small step shape in the big bottom in top in the axial direction
Pipe nipple endoporus, the lower nipple body is circumferentially arranged with multiple pod apertures through its upper and lower end, the pod apertures and lower pipe nipple
The axis parallel of body, for the lower pipe nipple endoporus between multiple pod apertures, the upper end of the pod apertures is short with
The epicoele connection of endoporus is saved, the upper cavity wall of the lower pipe nipple endoporus is provided with the first internal thread, the lower cavity wall of the lower pipe nipple endoporus
Top is provided with the second internal thread.
Pipe nipple under the utility model screw fastening type reacting cycle, wherein the epicoele bottom of the lower pipe nipple endoporus and lower nipple body
Lower end be respectively equipped with the guiding gutter of ring-type first and the guiding gutter of ring-type second, first guiding gutter, the second guiding gutter respectively with
Multiple pod apertures connections, first guiding gutter, the axial line axle center with corresponding pod apertures respectively of the second guiding gutter
Line is parallel.
Pipe nipple under the utility model screw fastening type reacting cycle, wherein the center line of the lower pipe nipple endoporus and multiple water conservancy diversion
The center line that hole surrounds shape overlaps.
Pipe nipple under the utility model screw fastening type reacting cycle, wherein under the epicoele of the lower pipe nipple endoporus, lower pipe nipple endoporus
Chamber shaped upper part is towards the cone structure that openend is flaring.
Pipe nipple under the utility model screw fastening type reacting cycle, wherein the outer surface lower end of the lower nipple body is provided with outer spiral shell
Line.
After such scheme, pipe nipple has the advantages that under the utility model screw fastening type reacting cycle:
1st, by the lower pipe nipple endoporus of setting, when the upper end of pipe nipple under screw fastening type reacting cycle and the first reacting cycle inner cylinder machine
Structure, the connection of the first reacting cycle outer barrel, and in the first reacting cycle inner cylinder mechanism, interpolation type is counter follows for the connection of the first reacting cycle outer barrel upper end
Pipe nipple on ring, pipe nipple lower end is sequentially connected on reacting cycle unidirectional control device, drill collar and drill bit composition under screw fastening type reacting cycle
Insert formula reverse circulating drilling tool, the upper pipe nipple endoporus of pipe nipple and endoporus, the spinner of the first reacting cycle inner cylinder mechanism on interpolation type reacting cycle
The lower pipe nipple endoporus of pipe nipple under formula reacting cycle, on interpolation type reacting cycle pipe nipple endoporus, the endoporus of the second reacting cycle inner cylinder mechanism
And the endoporus connection of the unidirectionally controlled pipe nipple of reacting cycle, the first passage formed in drilling tool, it is easy to drilling fluid to pass through from first passage
Carry out conventional direct circulation drilling well;And pass through multiple pod apertures circumferentially arranged on pipe nipple under screw fastening type reacting cycle, multiple water conservancy diversion
The annular space formed between hole and the first reacting cycle inner tube structure outer tube wall and the first reacting cycle outer tube inner wall of connection connects,
In multiple second pod apertures, multiple 3rd pod apertures, multiple second reacting cycle inner tube structure outer tube walls and the second reacting cycle outer barrel
The second channel that the annular space formed between wall is formed in drilling tool, reverse circulation drilling is carried out using this passage in leakiness stratum
Well so that oil drilling can be also normally carried out in leakiness stratum;
2nd, under the utility model screw fastening type reacting cycle pipe nipple by being provided with the second internal thread in the lower cavity wall bottom of its structure,
It is connected with reacting cycle female thread structure end, reacting cycle inner cylinder mechanism and reacting cycle outer barrel is connected as an entirety, effectively
Ground is solved in the environment that drilling tool rotates at a high speed in well, is avoided reacting cycle inner cylinder mechanism and reacting cycle outer barrel and is centrifuged in radial direction
Displacement is produced under power and axial vibration stress, so as to cause to seal the easily problem of failure and inner barrel device deformed damaged.
Brief description of the drawings
Fig. 1 is the cross section structure diagram of pipe nipple under the utility model screw fastening type reacting cycle;
Fig. 2 is Fig. 1 A-A to cross section structure diagram;
Fig. 3 is the upper plug type reverse circulating drilling tool structural representation with pipe nipple under the utility model screw fastening type reacting cycle;
Fig. 4 is the structural representation of the upper plug type reacting cycle device of upper plug type reverse circulating drilling tool in Fig. 3;
Fig. 5 is the first reacting cycle inner cylinder mechanism structure schematic diagram of upper plug type reacting cycle device in Fig. 4;
Fig. 6 is the first reacting cycle outer tube structure schematic diagram of upper plug type reacting cycle device in Fig. 4;
Fig. 7 is the cross section structure diagram of pipe nipple on the interpolation type reacting cycle of upper plug type reacting cycle device in Fig. 4;
Fig. 8 is Fig. 7 B-B direction cross section structure diagram;
Fig. 9 is the structural representation of the reacting cycle unidirectional control device of upper plug type reverse circulating drilling tool in Fig. 3.
Below in conjunction with the accompanying drawings, the utility model is described further by embodiment;
Embodiment
As depicted in figs. 1 and 2, pipe nipple includes lower nipple body 1, lower nipple body under the utility model screw fastening type reacting cycle
1 center is provided with pipe nipple endoporus 2 under the small step shape in the big bottom in top in the axial direction, and lower nipple body 1 is circumferentially set
There are multiple pod apertures 3 through its upper and lower end, the axis parallel of pod apertures 3 and lower nipple body 1, lower pipe nipple endoporus 2 is located at
Between multiple pod apertures 3, the center line of lower pipe nipple endoporus 2 overlaps with the round-shaped center line that multiple pod apertures 3 surround.Lead
The upper end of discharge orifice 3 connects with the epicoele of lower pipe nipple endoporus 2, and the upper cavity wall of lower pipe nipple endoporus 2 is provided with the first internal thread 4, lower pipe nipple
The lower cavity wall top of endoporus 2 is provided with the second internal thread 5.Epicoele, the cavity of resorption shaped upper part of lower pipe nipple endoporus 2 of lower pipe nipple endoporus 2
It is towards the cone structure that openend is flaring.The epicoele bottom of lower pipe nipple endoporus 2 and the lower end of lower nipple body 1 are respectively equipped with
The first guiding gutter of ring-type 6 and the second guiding gutter of ring-type 7, the first guiding gutter 6, the second guiding gutter 7 connect with multiple pod apertures 3 respectively
It is logical, the first guiding gutter 6, the axial line axis parallel with corresponding pod apertures 3 respectively of the second guiding gutter 7.Lower nipple body 1
Outer surface lower end be provided with external screw thread 8.
It is illustrated in figure 3 the upper plug type reverse circulating drilling tool structural representation with pipe nipple under the utility model screw fastening type reacting cycle
Figure, it includes upper plug type reacting cycle device 9, reacting cycle unidirectional control device 10, drill collar 11 and drill bit 12 successively from top to bottom.Its
In:
With reference to shown in Fig. 4, upper plug type reacting cycle device 9 includes the pipe nipple 13 on the interpolation type reacting cycle of upper end, with reference to
Shown in Fig. 5 and Fig. 6, pipe nipple 13 includes upper nipple body 14 on interpolation type reacting cycle, and the center of upper nipple body 14, which is provided with, to be run through
The upper pipe nipple endoporus 15 of its axial line, pipe nipple endoporus 15 is connected and composed by three sections of cylindrical holes on this, and middle cylindrical hole aperture is big
In Upper cylindrical hole aperture, but it is less than lower cylindrical hole aperture.Circumferentially arranged with multiple upper and lower through its in upper nipple body 14
Second pod apertures 16 at end, the upper end of multiple second pod apertures 16 connect with the epicoele of upper pipe nipple endoporus 15, multiple second water conservancy diversion
The upper and lower end in hole 16 is respectively arranged with the first guiding gutter of ring-type 17 and the second guiding gutter of ring-type 18, the first guiding gutter 17 and second
Guiding gutter 18 communicates with multiple second pod apertures 16.The inner chamber top of upper nipple body 14 is provided with the 3rd internal thread 19, upper short
The outer surface lower end of abridged edition body 14 is provided with the second external screw thread 20, and the lower end of upper nipple body 14 connects the first reacting cycle inner cylinder mechanism
21 and the first reacting cycle outer barrel 22, with reference to shown in Fig. 7, the first reacting cycle inner cylinder mechanism 21 includes the first reacting cycle inner cylinder 23 and peace
Multiple first wiper blocks 24 loaded on the outer surface of the first reacting cycle inner cylinder 23, the outer surface top of the first reacting cycle inner cylinder 23 are set
There are multiple first seal grooves 25, the first sealing ring 26 is separately installed with each first seal groove 25, multiple first sealing rings 26
The sealed connection for ensureing the reacting cycle inner cylinder mechanism 21 of pipe nipple 13 and first on interpolation type reacting cycle is set.First reacting cycle inner cylinder 23
Outer surface bottom be provided with the 3rd external screw thread 27.The top of first reacting cycle inner cylinder 23 is plugged in the upper short of nipple body 14
The cavity of resorption of endoporus 15 is saved, the lower end of the first reacting cycle inner cylinder 23 passes through the 3rd external screw thread 27 and pipe nipple 28 under screw fastening type reacting cycle
Second internal thread 5 is spirally connected fixation.The lower end of upper nipple body 14 is connected by the second external screw thread 20 with the first reacting cycle outer barrel 22.
With reference to shown in Fig. 8, the inner chamber upper end of the first reacting cycle outer barrel 22 is provided with the 4th internal thread 29, the first reacting cycle outer barrel 22 it is outer
Surface lower end is provided with the 4th external screw thread 30, the first reacting cycle outer barrel 22 pass through the 4th internal thread 29 and upper nipple body 14 the
Two external screw threads 20 are spirally connected fixation.First reacting cycle inner cylinder mechanism 21 is set in the inner chamber of the first reacting cycle outer barrel 22, and multiple first
Wiper block 24 is provided for ensureing that the first reacting cycle inner cylinder mechanism 21 is placed in the middle in the first reacting cycle outer barrel 22.First reacting cycle
The lower end of outer barrel 22 is spirally connected fixation by the first internal thread 4 of the 4th external screw thread 30 and pipe nipple 28 under screw fastening type reacting cycle.It is upper short
Section endoporus 15, the first reacting cycle inner cylinder 23 inner chamber and lower pipe nipple endoporus 2 is upper and lower communicates, the lower end of multiple second pod apertures 16
Annular space between the outer wall and the inwall of the first reacting cycle outer barrel 22 of the first reacting cycle inner cylinder mechanism 21 communicates, the annular space again and its
Multiple pod apertures 3 of lower end communicate.
With reference to shown in Fig. 9, reacting cycle unidirectional control device 10 from top to bottom successively include interpolation type reacting cycle on pipe nipple 31,
Second reacting cycle inner cylinder mechanism 32, the second reacting cycle outer barrel 33 and the unidirectionally controlled pipe nipple 34 of reacting cycle.It is short on interpolation type reacting cycle
Section 31 includes nipple body 35 on interpolation type reacting cycle, and the center of nipple body 35, which is provided with, on interpolation type reacting cycle runs through its axle center
Pipe nipple endoporus 36 on the interpolation type reacting cycle of line, it is circumferentially arranged in nipple body 35 on interpolation type reacting cycle to there are multiple three to lead
Discharge orifice 37, pipe nipple 31 is bolted in the lower end of pipe nipple 28 under screw fastening type reacting cycle, the second reacting cycle inner cylinder machine on interpolation type reacting cycle
Structure 32 is placed through the inner chamber of the second reacting cycle outer barrel 33, and the second reacting cycle inner cylinder mechanism 32, the second reacting cycle outer barrel 33 are bolted in
The lower end of pipe nipple 31 on interpolation type reacting cycle, the unidirectionally controlled pipe nipple 34 of reacting cycle are bolted in the second reacting cycle inner cylinder mechanism 32,
The lower end of two reacting cycle outer barrels 33, the lower end connection drill collar 11 of the unidirectionally controlled pipe nipple 34 of reacting cycle, the lower end connection of drill collar 11 are bored
First 12.Lower end of the upper end of multiple 3rd pod apertures 37 respectively with multiple second pod apertures 16 communicates, multiple 3rd pod apertures 37
Lower end communicated with the annular space between the outer wall of the second reacting cycle inner cylinder mechanism 32 and the inwall of the second reacting cycle outer barrel 33.
The upper plug type reverse circulating drilling tool being assembled into using pipe nipple under the utility model screw fastening type reacting cycle is combined, instead of existing
Drilling tool carries out wellbore construction, when normal drilling well, under screw fastening type reacting cycle in the reacting cycle of lower pipe nipple endoporus 2 and first of pipe nipple 28
The upper pipe nipple endoporus 15 of pipe nipple 13 on the cylinder inner chamber of mechanism 21, interpolation type reacting cycle, on interpolation type reacting cycle pipe nipple 31 interpolation
The endoporus of pipe nipple endoporus 36, the inner chamber of the second reacting cycle inner cylinder mechanism 32 and the unidirectionally controlled pipe nipple 34 of reacting cycle connects on formula reacting cycle
First passage that is logical, being formed in drilling tool, drilling fluid is from first passage by carrying out conventional direct circulation drilling well.
When boring chance leakage stratum, by operating the drilling fluid guiding device on ground, from pipe nipple 13 on interpolation type reacting cycle
The second pod apertures 16 be pumped into high pressure air, high pressure air is via in multiple second pod apertures 16, the first reacting cycle
It is the annular space that is formed between the cylinder outer tube wall of mechanism 21 and the inner tubal wall of the first reacting cycle outer barrel 22, multiple pod apertures 3, multiple
The of the annular space composition formed between 3rd pod apertures 37, the second reacting cycle inner cylinder mechanism 32 and the second reacting cycle outer barrel 33
Two passages, high pressure air is via the cinclides on the tube wall of the second reacting cycle inner cylinder mechanism 32 of reacting cycle unidirectional control device 10
Ground is returned out after the first passage of 38 entrance drilling tools, the annular space and drilling tool first passage between drilling tool, the borehole wall (casing wall) are formed
Positive differential pressure, ground are pumped into drilling fluid from the annular space between drilling tool, the borehole wall (casing wall), and drilling fluid reaches shaft bottom from annular space, carried
Drilling cuttings enters drill bit 12, into drilling tool first passage, returns out ground under the lasting promotion of high pressure air, realizes reacting cycle
Drilling well.
Embodiment described above is only that preferred embodiment of the present utility model is described, not new to this practicality
The scope of type is defined, on the premise of the utility model design spirit is not departed from, this area ordinary skill technical staff couple
The various modifications and improvement that the technical solution of the utility model is made, it all should fall into what claims of the present utility model determined
In protection domain.