CN105804669A - Pulse type drilling connector - Google Patents
Pulse type drilling connector Download PDFInfo
- Publication number
- CN105804669A CN105804669A CN201610346970.6A CN201610346970A CN105804669A CN 105804669 A CN105804669 A CN 105804669A CN 201610346970 A CN201610346970 A CN 201610346970A CN 105804669 A CN105804669 A CN 105804669A
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- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a pulse type drilling connector. The pulse type drilling connector comprises an upper shell (1), a piston body (2) and a lower shell (3), wherein the upper shell (1) is formed by a cylinder and a cone which are sequentially arranged from bottom to top and the piston body (2) is formed by a piston main body (25), a rotary valve (17) and a center pressing ring (16); a piston body assembling hole (63) is formed in the lower shell (3), an axial fastening device A (7) of the upper shell (1) is in butt joint with an axial fastening device B (64) of the lower shell (3), the lower shell (3) penetrates through a shell connecting stepped hole (61) through a bolt B (68) and is connected with a shell connecting threaded hole (13) so as to be fixedly arranged on the upper shell (1), and the rotary valve (17) is arranged in a piston cavity (12). The pulse type drilling connector disclosed by the invention has the beneficial effects that adhering of rock debris on the surface of a drill can be reduced, and the bit balling resistance of the drill is increased; holding and pressing phenomena in a direction well because a drill rod or a drilling tool is in contact with a well wall can be avoided.
Description
Technical field
The present invention relates to the joint on petroleum gas, drilling bit top used for geological prospecting, particularly a kind of pulsed Wheel drilling joint.
Background technology
At present, PDC(composite polycrystal-diamond: polycrystallinediamondcomposite) drill bit due in hole quality, rate of penetration and service life etc. performance good, it is widely used in oil-gas mining and geological prospecting, and achieve prominent result of use, but there is also some limitation.In the use on high-ductility stratum, effect is undesirable, and main cause is PDC drill bit wedging difficulty on high-ductility stratum, it is difficult to realize high efficiency cutting.When directed drilling, particularly in the use procedure of extended reach well, horizontal well, whole downhole tool easily produces the problem that backing pressure is serious, causes that tool-face the pressure of the drill is inadequate, it is impossible to wedging stratum is cut.Under some stratum and drilling parameter, the landwaste that drilling well produces is liable to stick to bit face and then produces the phenomenon of mud drum, causes that drill bit lost efficacy and cannot continue to creep into.
For the problem that high-ductility stratum PDC drill bit stock-removing efficiency is low, existing solution is generally adjustment drill bit design, adopts the cutting unit as drill bit of minor radius cylinder PDC or taper PDC.Although this scheme can improve every PDC cutting unit to the pressure on stratum thus improving depth of tooth penetration, but the stock-removing efficiency of minor radius cylinder PDC and taper PDC is lower than large radius cylinder PDC, thus causing that the stock-removing efficiency of whole PDC drill bit promotes obvious not.
For directed drilling, particularly extended reach well, the problem of easy backing pressure in horizontal well drilling process, more effective scheme is to adopt rotary steering system now, but rotary steering system cost is higher, it is necessary to the input of a whole set of equipment.
For the problem of bit balling, it is presently mainly by adjusting property of drilling fluid for different lithology, carry out bit type selection and adopting suitable drilling technology to avoid the generation of PDC drill bit mud drum.But drilling strata qualitative change faster time can have little time to adjust and cause the generation of mud drum.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that a kind of can reduce the landwaste attachment in bit face, improve the anti-mud drum performance of drill bit；Avoid the pulsed Wheel drilling joint of the backing pressure phenomenon contacting with the borehole wall because of drilling rod or drilling tool and causing in directional well.
nullThe purpose of the present invention is achieved through the following technical solutions: a kind of pulsed Wheel drilling joint，It includes upper shell、Piston body and lower house，Upper shell is made up of the cylinder being sequentially arranged from the bottom up and cone，The bottom of cylinder is provided with plunger shaft，The circumferentially positioned device in multiple top it is evenly distributed with on the bottom of plunger shaft and with cylinder center for the center of circle，The bottom of the circumferentially positioned device in top is provided with inclined-plane A，It is evenly distributed with on cylinder cylinder and along the circumferencial direction of cylinder and multiple axially fastens device A and axial projection，Axially fasten the housing being provided with vertical setting on device A and connect screwed hole，Often adjacent two axially fasten and are provided with axial projection between device A，Axial projection is provided with the upper shell relief hole of connection plunger shaft，The outside of cone is provided with conical external screw thread，The middle part of cone is provided with the central upper portion water hole of connection plunger shaft，The note pressure hole of connection central upper portion water hole and plunger shaft it is additionally provided with in cone；
nullDescribed piston body is by piston main body、Changeover valve and center trim ring composition，Piston main body is post shapes，On piston main body top surface and be sequentially arranged from top to bottom be interconnected center pressure circle hole、Inner carrier sealing surface、Lower central water hole and conical internal thread，The bottom of center pressure circle hole is provided with center trim ring screwed hole，The cylinder of piston main body is provided with annular groove、Outer piston sealing surface and be evenly distributed on the radial protrusion outside piston main body，Outer piston sealing surface is arranged at the top of annular groove，Radial protrusion is arranged at the lower section of annular groove，The top end face of piston main body is provided with the bottom circumference spring groove connected with annular groove、Bottom pin hole and axial relief hole A，Between two radial protrusions of bottom pin hole，Bottom pin hole is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Bottom latch it is provided with in the pin hole of bottom、Bottom latch spring and bottom latch spring pressure cap，Bottom latch spring pressure cap is by outer-hexagonal screwing structure A、External screw thread A and central through hole composition，External screw thread A is connected with the screwed hole of bottom pin hole，Latch upper end, bottom is inserted in central through hole，Bottom latch spring it is provided with in the macropore of the trapezoidal hole of bottom pin hole，Bottom latch spring is enclosed within the latch of bottom and its top ends is fixed on the latch spring pressure cap of bottom，It is provided with screw hole A in described bottom circumference spring groove，It is connected to spring set screw in screw hole A；nullDescribed changeover valve is ring-shaped，The middle part of changeover valve is provided with centralized positioning step hole，The circumferentially positioned device in multiple bottom it is evenly distributed with on the top surface of changeover valve and with centralized positioning step hole for the center of circle、Axial relief hole B and upper latch hole，The top of the circumferentially positioned device in bottom is provided with the inclined-plane B matched of the inclined-plane A with the circumferentially positioned device in top，The basal surface of changeover valve is provided with the top circumference spring groove that bottom circumference spring groove is corresponding，Upper latch hole is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Upper latch is provided with upper latch in hole、Upper latch spring and upper latch spring pressure cap，Upper latch spring pressure cap is by outer-hexagonal screwing structure B、External screw thread B、Central blind hole forms，External screw thread B is connected with the screwed hole in upper latch hole，Upper latch is arranged in the trapezoidal hole in upper latch hole and its bottom is plugged in central through hole，Upper latch spring is arranged in the macropore of this trapezoidal hole and is enclosed within upper latch，The top ends of upper latch spring is fixed in central blind hole，It is provided with screw hole B in the circumference spring groove of top，It is connected to spring set screw in screw hole B，Spring set screw in the circumference spring groove of top be connected the circumferential spring being in extended state between the spring set screw in the circumference spring groove of bottom；Described center trim ring is ring-shaped, the cylinder of center trim ring is provided with positioning table terrace, the top of center trim ring is provided with step through-hole, described center trim ring is assemblied in the center pressure circle hole of piston main body through the centralized positioning step hole of changeover valve, and center trim ring runs through step through-hole through bolt A and is connected and fixed on piston main body with center trim ring screwed hole；
Described lower house is post shapes, it is provided with in lower house and piston body pilot hole, piston body pilot hole is provided with multiple radial groove, the overflow annular groove of connection radial groove it is additionally provided with in lower house, the cylinder of lower house is evenly distributed with and multiple axially fastens device B, the top axially fastening device B is provided with the housing connection stepped hole of vertical setting, and the top end face of lower house is additionally provided with axial notch and L-type overflow launder, and L-type overflow launder connects overflow annular groove and axial notch；
Described piston main body is plugged in piston body pilot hole, the radial protrusion of piston main body is plugged in the radial groove of lower house, the axial projection of upper shell is plugged in axial notch, upper shell relief hole in axial projection connects with L-type overflow launder, the device A that axially fastens of upper shell docks with the device B that axially fastens of lower house, and lower house runs through housing through bolt B and connects stepped hole and be connected screwed hole with housing and be connected and fixed on upper shell, described changeover valve is arranged in plunger shaft.
Described cylinder is additionally provided with breaker slot.
The head of described spring set screw is provided with spring pilot hole.
The two ends of described circumferential spring are provided with annulus, and annulus is fixed on spring pilot hole.
The invention have the advantages that (1) is when this joint is arranged on drill bit, the axial pulse of its generation can intermittent increase the pressure of the drill, improve drill bit wedging ability in high-ductility stratum, the landwaste attachment in bit face can be reduced simultaneously, improve the anti-mud drum performance of drill bit.(2) when this joint is arranged between two drilling rods or between drill bit and other drilling tools, can make neighbouring drilling rod or drilling tool that axial vibration occurs, reduce the frictional resistance between the borehole wall and drilling rod or drilling tool, it is to avoid because of backing pressure phenomenon that drilling rod or drilling tool contact with the borehole wall and cause in directional well.
Accompanying drawing explanation
Fig. 1 is pulsed Wheel drilling joint explosive view；
Fig. 2 is upper shell structural representation；
Fig. 3 is upper shell profile；
Fig. 4 is piston body explosive view；
Fig. 5 is piston main body profile；
Fig. 6 is bottom pin hole installation diagram；
Fig. 7 is bottom latch spring pressure cap structural representation；
Fig. 8 is upper and lower part circumference spring groove installation diagram；
Fig. 9 is spring set screw structural representation；
Figure 10 is circumference spring structure schematic diagram；
Figure 11 is rotary valve structure schematic diagram；
Figure 12 is upper latch hole installation diagram；
Figure 13 is upper latch spring pressure cap structural representation；
Ring pressing construction schematic diagram centered by Figure 14；
Figure 15 is lower house structural representation；
Figure 16 is the scheme of installation of the present invention and top drilling tool and drill bit；
Figure 17 is the scheme of installation of the present invention and two drilling rods；
Figure 18 is piston body and upper shell original state schematic diagram；
Figure 19 is that upper latch is by bottom latch jack-up view；
Figure 20 is plunger shaft pressure release figure；
Figure 21 is that plunger shaft is compressed figure；
Figure 22 is the structural representation of the present invention；
nullIn figure，1-upper shell，2-piston body，3-lower house，4-central upper portion water hole，5-conical external screw thread，6-breaker slot，7-axially fastens device A，8-axial projection，9-upper shell relief hole，10-note pressure hole，The circumferentially positioned device in 11-top，12-plunger shaft，13-housing connects screwed hole，15-bolt A，16-center trim ring，17-changeover valve，18-circumference spring，20-center pressure circle hole，21-inner carrier sealing surface，22-outer piston sealing surface，23-annular groove，24-radial protrusion，25-piston main body，26-bottom pin hole，The axial relief hole A of 28-，29-center trim ring screwed hole，30-bottom circumference spring groove，32-bottom latch，33-bottom latch spring，34-bottom latch spring pressure cap，The axial relief hole B of 35-，36-upper latch hole，The circumferentially positioned device in 37-bottom，38-upper latch，39-upper latch spring，40-upper latch spring pressure cap，41-lower central water hole，42-conical internal thread，43-outer-hexagonal screwing structure A，44-external screw thread A，45-central through hole，46-screw hole A，47-spring set screw，48-spring pilot hole，49-centralized positioning step hole，50-top circumference spring groove，51-outer-hexagonal screwing structure B，52-external screw thread B，53-central blind hole，54-screw hole B，55-annulus，56-positioning table terrace，57-step through-hole，58-L type overflow launder，59-radial groove，60-axial notch，61-housing connects stepped hole，62-overflow annular groove，63-piston body pilot hole，64-axially fastens device B，65-drilling tool，66-drill bit，67-drilling rod，68-bolt B，69-cleaner for high-pressure drilling fluid.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:
nullAs shown in Fig. 1 ~ 22，A kind of pulsed Wheel drilling joint，It includes upper shell 1、Piston body 2 and lower house 3，Upper shell 1 is made up of the cylinder being sequentially arranged from the bottom up and cone，Cylinder is additionally provided with breaker slot 6，The bottom of cylinder is provided with plunger shaft 12，The circumferentially positioned device 11 in multiple top it is evenly distributed with on the bottom of plunger shaft 12 and with cylinder center for the center of circle，The bottom of the circumferentially positioned device 11 in top is provided with inclined-plane A，It is evenly distributed with on cylinder cylinder and along the circumferencial direction of cylinder and multiple axially fastens device A7 and axial projection 8，Axially fasten the housing being provided with vertical setting on device A7 and connect screwed hole 13，Often adjacent two axially fasten and are provided with axial projection 8 between device A7，Axial projection 8 is provided with the upper shell relief hole 9 of connection plunger shaft 12，The outside of cone is provided with conical external screw thread 5，The middle part of cone is provided with the central upper portion water hole 4 of connection plunger shaft 12，The note pressure hole 10 of connection central upper portion water hole 4 and plunger shaft 12 it is additionally provided with in cone.
nullDescribed piston body 2 is by piston main body 25、Changeover valve 17 and center trim ring 16 form，Piston main body 25 is post shapes，On piston main body 25 top surface and be sequentially arranged from top to bottom be interconnected center pressure circle hole 20、Inner carrier sealing surface 21、Lower central water hole 41 and conical internal thread 42，The bottom of center pressure circle hole 20 is provided with center trim ring screwed hole 29，The cylinder of piston main body 25 is provided with annular groove 23、Outer piston sealing surface 22 and be evenly distributed on the radial protrusion 24 outside piston main body 25，Outer piston sealing surface 22 is arranged at the top of annular groove 23，Radial protrusion 24 is arranged at the lower section of annular groove 23，The top end face of piston main body 25 is provided with the bottom circumference spring groove 30 connected with annular groove 23、Bottom pin hole 26 and axial relief hole A28，Between 26 two radial protrusions 24 of bottom pin hole，Bottom pin hole 26 is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Bottom latch 32 it is provided with in bottom pin hole 26、Bottom latch spring 33 and bottom latch spring pressure cap 34，Bottom latch spring pressure cap 34 is by outer-hexagonal screwing structure A43、External screw thread A44 and central through hole 45 form，External screw thread A44 is connected with the screwed hole of bottom pin hole 26，Bottom latch 32 upper end is inserted in central through hole 45，Bottom latch spring 33 it is provided with in the macropore of the trapezoidal hole of bottom pin hole 26，Bottom latch spring 33 is enclosed within bottom latch 32 and its top ends is fixed on bottom latch spring pressure cap 34，It is provided with screw hole A46 in described bottom circumference spring groove 30，Spring set screw 47 it is connected in screw hole A46；
nullDescribed changeover valve 17 is ring-shaped，The middle part of changeover valve 17 is provided with centralized positioning step hole 49，The circumferentially positioned device 37 in multiple bottom it is evenly distributed with on the top surface of changeover valve 17 and with centralized positioning step hole 49 for the center of circle、Axial relief hole B35 and upper latch hole 36，The top of the circumferentially positioned device in bottom 37 is provided with the inclined-plane B matched of the inclined-plane A with the circumferentially positioned device 11 in top，The basal surface of changeover valve 17 is provided with the top circumference spring groove 50 that bottom circumference spring groove 30 is corresponding，Upper latch hole 36 is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Upper latch 38 it is provided with in upper latch hole 36、Upper latch spring 39 and upper latch spring pressure cap 40，Upper latch spring pressure cap 40 is by outer-hexagonal screwing structure B51、External screw thread B52、Central blind hole 53 forms，External screw thread B52 is connected with the screwed hole in upper latch hole 36，Upper latch 38 is arranged in the trapezoidal hole in upper latch hole 36 and its bottom is plugged in central through hole 45，Upper latch spring 39 is arranged in the macropore of this trapezoidal hole and is enclosed within upper latch 38，The top ends of upper latch spring 39 is fixed in central blind hole 53，It is provided with screw hole B54 in top circumference spring groove 50，Spring set screw 47 it is connected in screw hole B54，Spring set screw 47 in top circumference spring groove 50 be connected the circumferential spring 18 being in extended state between the spring set screw 47 in bottom circumference spring groove 30.
Described center trim ring 16 is ring-shaped, the cylinder of center trim ring 16 is provided with positioning table terrace 56, the top of center trim ring 16 is provided with step through-hole 57, described center trim ring 16 is assemblied in the center pressure circle hole 20 of piston main body 25 through the centralized positioning step hole 49 of changeover valve 17, and center trim ring 16 runs through step through-hole 57 through bolt A15 and is connected and fixed on piston main body 25 with center trim ring screwed hole 29.
Described lower house 3 is post shapes, it is provided with in lower house 3 and piston body pilot hole 63, piston body pilot hole 63 is provided with multiple radial groove 59, the overflow annular groove 62 of connection radial groove 59 it is additionally provided with in lower house 3, the cylinder of lower house 3 is evenly distributed with and multiple axially fastens device B64, the top axially fastening device B64 is provided with the housing connection stepped hole 61 of vertical setting, being additionally provided with axial notch 60 and L-type overflow launder 58 on the top end face of lower house 3, L-type overflow launder 58 connects overflow annular groove 62 and axial notch 60；
Described piston main body 25 is plugged in piston body pilot hole 63, the radial protrusion 24 of piston main body 25 is plugged in the radial groove 59 of lower house 3, the axial projection 8 of upper shell 1 is plugged in axial notch 60, upper shell relief hole 9 in axial projection 8 connects with L-type overflow launder 58, the device A7 that axially fastens of upper shell 1 docks with the device B64 that axially fastens of lower house 3, and lower house 3 runs through housing through bolt B 68 and connects stepped hole 61 and be connected screwed hole 13 with housing and be connected and fixed on upper shell 1, described changeover valve 17 is arranged in plunger shaft 12, described changeover valve 17 can rotate in a circumferential direction motion around center trim ring 16.
The head of described spring set screw 47 is provided with spring pilot hole 48；The two ends of described circumferential spring 18 are provided with annulus 55, and annulus 55 is fixed on spring pilot hole 48.
The work process of the present invention is as follows:
As shown in figure 16, threadeding with conical external screw thread 5 for drilling tool 65, drill bit 66 is threadeded with conical internal thread 42.
As shown in figure 17, being that a drilling rod 67 is threadeded with conical external screw thread 5, another drilling rod 67 is threadeded with conical internal thread 42.
As shown in figure 18, in an initial condition, due under the effect of drilling rod or drilling tool gravity, plunger shaft 12 is compressed by piston body 2, the inclined-plane A of the circumferentially positioned device in top 11 contacts with the inclined-plane B of the circumferentially positioned device 37 in bottom, the circumference that the circumferentially positioned device 11 in top limits changeover valve 17 is mobile, now the axial relief hole A28 on piston main body 25 staggers with the axial relief hole B35 on changeover valve 17 and is in not connected state, circumference spring 18 is in extended state, and upper latch 38 is owing to stretching in the central through hole 45 of bottom latch spring pressure cap 34 under the effect of upper latch spring 39, therefore after upper latch 38 can make piston body 2 leave the circumferentially positioned device 11 in top, changeover valve 17 will not reset because the effect of circumference spring 18 rotates.
As shown in figure 19, in an initial condition, plunger shaft 12 only turns on note pressure hole 10, cleaner for high-pressure drilling fluid 69 enters in plunger shaft 12 by noting pressure hole 10, piston body 2 moves down under the effect of cleaner for high-pressure drilling fluid 69 pressure, when the lower surface of bottom latch 32 touches the upper surface of lower house 3, bottom latch 32 is gradually pressed in bottom pin hole 26, bottom latch 32 jack-up upper latch 38, after upper latch 38 is ejected the central through hole 45 of bottom latch spring pressure cap 34, upper latch 38 loses the effect that restriction changeover valve 17 rotates in a circumferential direction, now, changeover valve 17 rotates under the restoring force effect of circumference spring 18, in the direction of rotation of changeover valve 17 such as Figure 19 shown in the direction of arrow.
As shown in figure 20, after changeover valve 17 rotates, axial relief hole A28 on piston main body 25 and the axial relief hole B35 conducting on changeover valve 17, cleaner for high-pressure drilling fluid 69 in plunger shaft 12 sequentially flows out the outside of this joint through axial relief hole B35, axial relief hole A28, upper shell relief hole 9 and the passage of L-type overflow launder 58 formation, overflow annular groove 62, it is achieved that pressure release.
nullAs shown in figure 21，After pressure release completes，Due under the effect of drilling rod or drilling tool gravity，Piston body 2 moves upward，Lower house 3 separates with piston main body 25，Bottom latch 32 resets under the effect at bottom latch spring 33，Continuation campaign along with piston body 2，When the inclined-plane A of the circumferentially positioned device in the top 11 and inclined-plane B of the circumferentially positioned device 37 in bottom collides again，The circumferentially positioned device in top 11 starts to extrude the circumferentially positioned device 37 in bottom，So that the circumferentially positioned device 37 in bottom rotates，And then valve 17 is rotated rotates，Direction of rotation is as shown in figure 21，In rotary course，When upper latch hole 36 aligned with lower pin hole 26，Upper latch 38 extends downwardly under the spring restoring force effect of upper latch spring 39，Upper latch 38 stretches in the central through hole 45 of bottom latch spring pressure cap 34.Now this joint completes a dust cycle.
By above Operational Mechanisms, this joint can constantly produce axial pulse.When this joint is arranged on drill bit 66, the axial pulse of its generation can intermittent increase the pressure of the drill, improve the drill bit 66 wedging ability in high-ductility stratum, the landwaste attachment on drill bit 66 surface can be reduced simultaneously, improve the anti-mud drum performance of drill bit；When this joint is arranged between two drilling rods 67 or between drill bit and other drilling tools time, can make neighbouring drilling rod or drilling tool that axial vibration occurs, reduce the frictional resistance between the borehole wall and drilling rod or drilling tool, it is to avoid because of backing pressure phenomenon that drilling rod or drilling tool contact with the borehole wall and cause in directional well.
Claims (4)
- null1. a pulsed Wheel drilling joint，It is characterized in that: it includes upper shell (1)、Piston body (2) and lower house (3)，Upper shell (1) is made up of the cylinder being sequentially arranged from the bottom up and cone，The bottom of cylinder is provided with plunger shaft (12)，The circumferentially positioned device in multiple top (11) it is evenly distributed with on the bottom of plunger shaft (12) and with cylinder center for the center of circle，The bottom on the circumferentially positioned device in top (11) is provided with inclined-plane A，It is evenly distributed with on cylinder cylinder and along the circumferencial direction of cylinder and multiple axially fastens device A(7) and axial projection (8)，Axially fasten device A(7) on be provided with vertical setting housing connect screwed hole (13)，Often adjacent two axially fasten device A(7) between be provided with axial projection (8)，Axial projection (8) is provided with the upper shell relief hole (9) of connection plunger shaft (12)，The outside of cone is provided with conical external screw thread (5)，The middle part of cone is provided with the central upper portion water hole (4) of connection plunger shaft (12)，Note pressure hole (10) of connection central upper portion water hole (4) and plunger shaft (12) it is additionally provided with in cone；nullDescribed piston body (2) is by piston main body (25)、Changeover valve (17) and center trim ring (16) composition，Piston main body (25) is post shapes，On piston main body (25) top surface and be sequentially arranged from top to bottom be interconnected center pressure circle hole (20)、Inner carrier sealing surface (21)、Lower central water hole (41) and conical internal thread (42)，The bottom at center pressure circle hole (20) is provided with center trim ring screwed hole (29)，The cylinder of piston main body (25) is provided with annular groove (23)、Outer piston sealing surface (22) and be evenly distributed on the radial protrusion (24) that piston main body (25) is outside，Outer piston sealing surface (22) is arranged at the top of annular groove (23)，Radial protrusion (24) is arranged at the lower section of annular groove (23)，The top end face of piston main body (25) is provided with bottom circumference spring groove (30) connected with annular groove (23)、Bottom pin hole (26) and axial relief hole A(28)，Between (26) two radial protrusions (24) of bottom pin hole，Bottom pin hole (26) is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Bottom latch (32) it is provided with in bottom pin hole (26)、Bottom latch spring (33) and bottom latch spring pressure cap (34)，Bottom latch spring pressure cap (34) is by outer-hexagonal screwing structure A(43)、External screw thread A(44) and central through hole (45) composition，External screw thread A(44) it is connected with the screwed hole of bottom pin hole (26)，Bottom latch (32) upper end is inserted in central through hole (45)，Bottom latch spring (33) it is provided with in the macropore of the trapezoidal hole of bottom pin hole (26)，Bottom latch spring (33) is enclosed within bottom latch (32) and its top ends is fixed on bottom latch spring pressure cap (34)，It is provided with screw hole A(46) in described bottom circumference spring groove (30)，Screw hole A(46) in be connected to spring set screw (47)；nullDescribed changeover valve (17) is ring-shaped，The middle part of changeover valve (17) is provided with centralized positioning step hole (49)，The circumferentially positioned device in multiple bottom (37) it is evenly distributed with on the top surface of changeover valve (17) and with centralized positioning step hole (49) for the center of circle、Axial relief hole B(35) and upper latch hole (36)，The top of the circumferentially positioned device in bottom (37) is provided with the inclined-plane B matched of the inclined-plane A with the circumferentially positioned device in top (11)，The basal surface of changeover valve (17) is provided with top circumference spring groove (50) that bottom circumference spring groove (30) is corresponding，Upper latch hole (36) is made up of the screwed hole being sequentially arranged from top to bottom and ladder hole，Upper latch (38) it is provided with in upper latch hole (36)、Upper latch spring (39) and upper latch spring pressure cap (40)，Upper latch spring pressure cap (40) is by outer-hexagonal screwing structure B(51)、External screw thread B(52)、Central blind hole (53) forms，External screw thread B(52) it is connected with the screwed hole of upper latch hole (36)，Upper latch (38) is arranged in the trapezoidal hole in upper latch hole (36) and its bottom is plugged in central through hole (45)，Upper latch spring (39) is arranged in the macropore of this trapezoidal hole and is enclosed within upper latch (38)，The top ends of upper latch spring (39) is fixed in central blind hole (53)，It is provided with screw hole B(54) in top circumference spring groove (50)，Screw hole B(54) in be connected to spring set screw (47)，It is connected, between spring set screw (47) and the spring set screw (47) in bottom circumference spring groove (30) in top circumference spring groove (50), the circumferential spring (18) being in extended state；Described center trim ring (16) is ring-shaped, the cylinder of center trim ring (16) is provided with positioning table terrace (56), the top of center trim ring (16) is provided with step through-hole (57), described center trim ring (16) is assemblied in center pressure circle hole (20) of piston main body (25) through the centralized positioning step hole (49) of changeover valve (17), and center trim ring (16) is through bolt A(15) run through step through-hole (57) and be connected and fixed on piston main body (25) with center trim ring screwed hole (29)；Described lower house (3) is post shapes, it is provided with in lower house (3) and piston body pilot hole (63), piston body pilot hole (63) is provided with multiple radial groove (59), the overflow annular groove (62) of connection radial groove (59) it is additionally provided with in lower house (3), the cylinder of lower house (3) is evenly distributed with and multiple axially fastens device B(64), axially fasten device B(64) top be provided with vertical setting housing connect stepped hole (61), the top end face of lower house (3) is additionally provided with axial notch (60) and L-type overflow launder (58), L-type overflow launder (58) connection overflow annular groove (62) and axial notch (60)；Described piston main body (25) is plugged in piston body pilot hole (63), the radial protrusion (24) of piston main body (25) is plugged in the radial groove (59) of lower house (3), the axial projection (8) of upper shell (1) is plugged in axial notch (60), upper shell relief hole (9) in axial projection (8) connects with L-type overflow launder (58), upper shell (1) axially fasten device A(7) with lower house (3) axially fasten device B(64) dock, and lower house (3) runs through housing through bolt B (68) and connects stepped hole (61) and be connected screwed hole (13) with housing and be connected and fixed on upper shell (1), described changeover valve (17) is arranged in plunger shaft (12).
- 2. a kind of pulsed Wheel drilling joint according to claim 1, it is characterised in that: described cylinder is additionally provided with breaker slot (6).
- 3. a kind of pulsed Wheel drilling joint according to claim 1, it is characterised in that: the head of described spring set screw (47) is provided with spring pilot hole (48).
- 4. a kind of pulsed Wheel drilling joint according to claim 1, it is characterised in that: the two ends of described circumferential spring (18) are provided with annulus (55), and annulus (55) is fixed on spring pilot hole (48).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346970.6A CN105804669B (en) | 2016-05-24 | 2016-05-24 | A kind of pulsed Wheel drilling joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610346970.6A CN105804669B (en) | 2016-05-24 | 2016-05-24 | A kind of pulsed Wheel drilling joint |
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| CN105804669A true CN105804669A (en) | 2016-07-27 |
| CN105804669B CN105804669B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610346970.6A Active CN105804669B (en) | 2016-05-24 | 2016-05-24 | A kind of pulsed Wheel drilling joint |
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Cited By (4)
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| CN108071353A (en) * | 2017-12-15 | 2018-05-25 | 广东五月花网络科技有限公司 | A kind of fixing device for being used for drilling rod during oil exploitation |
| CN110531522A (en) * | 2019-08-12 | 2019-12-03 | 张晓卫 | A kind of releasing type device having offset printing function for medical image Collaborative report |
| CN110847836A (en) * | 2019-11-25 | 2020-02-28 | 西南石油大学 | Underground seismic source nipple while drilling |
| CN112065305A (en) * | 2020-11-12 | 2020-12-11 | 东营同博石油电子仪器有限公司 | Oil pipe dropout prevention means is used in oil field exploitation |
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| CN110847836B (en) * | 2019-11-25 | 2020-06-16 | 西南石油大学 | Underground seismic source nipple while drilling |
| CN112065305A (en) * | 2020-11-12 | 2020-12-11 | 东营同博石油电子仪器有限公司 | Oil pipe dropout prevention means is used in oil field exploitation |
| CN112065305B (en) * | 2020-11-12 | 2021-02-02 | 中国石油化工股份有限公司 | Oil pipe dropout prevention means is used in oil field exploitation |
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|---|---|
| CN105804669B (en) | 2017-12-22 |
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