CN105649549A - Drilling tool righting pup joint - Google Patents
Drilling tool righting pup joint Download PDFInfo
- Publication number
- CN105649549A CN105649549A CN201610143505.2A CN201610143505A CN105649549A CN 105649549 A CN105649549 A CN 105649549A CN 201610143505 A CN201610143505 A CN 201610143505A CN 105649549 A CN105649549 A CN 105649549A
- Authority
- CN
- China
- Prior art keywords
- valve
- runner
- valve body
- drilling tool
- sidewall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Abstract
The invention discloses a drilling tool righting pup joint which comprises a pup joint body, wherein an up-down penetrated drilling fluid channel is formed inside the pup joint body; a plurality of one-way valves used for enabling drilling fluid to flow from the drilling fluid channel to the outside of the pup joint body are uniformly and fixedly arranged on the side wall of the pup joint body in the circumferential direction; the outer side ends of the one-way valves in the radial directions can move telescopically along center shafts of the one-way valves. Direct contact of the drilling tool righting pup joint and a well wall can be reduced by utilization of the drilling fluid, so that friction and torsion can be effectively reduced, and the deviation preventing and straight well drilling performance can be effectively improved.
Description
Technical field
The present invention relates to down-hole equipment technical field, particularly relate to a kind of drilling tool centering short segment that can drop and wear away torsion.
Background technology
In petroleum drilling operation, particularly in inclined shaft, horizontal well and extended reach well, due to the effect of the complicated power such as drill bit and stratum Interaction Force, the drill string of drilling tool is easily generated deflection, affects drilling quality. Simultaneously because drill string deflection, it will resting on the lower borehole wall, frictional resistance and circumference moment of torsion between drill string and the borehole wall will sharply increase, the pressure of the drill that ground installation applies cannot effectively be transferred to drill bit place, drilling tool extension can be automatically stopped, and this not only lowers drilling efficiency, and adds drilling cost. Therefore, drop and wear away torsion and deviation control with drilling straight well is drillng operation key issue urgently to be resolved hurrily.
The drilling tool centralizing tool wearing away torsion drops in existing being used for, by carrying out righting with directly contacting of the borehole wall, offset frictional resistance and moment of torsion that the borehole wall applies simultaneously, although playing that dropping rubs to a certain extent and subtract the effect of torsion and righting, but the direct-type with the borehole wall all cannot be avoided to contact, and drilling tool centralizing tool needs to bear the frictional resistance from the borehole wall and moment of torsion. In high angle hole section or abrasive layer, frictional resistance and moment of torsion sharply increase, it is easy to beyond the performance range of drilling tool centralizing tool or cause the damage of drilling tool centralizing tool, make drilling tool centralizing tool to play and effectively drop the effect wearing away torsion and righting.
Thus, the present inventor is by experience and the practice of being engaged in relevant industries for many years, it is proposed to a kind of drilling tool centering short segment, to overcome the defect of prior art.
Summary of the invention
It is an object of the invention to provide a kind of drilling tool centering short segment, this drilling tool centering short segment can utilize drilling fluid to reduce and contact with the direct-type of the borehole wall, it is possible to effectively drops and wears away torsion, improves the performance of deviation control with drilling straight well.
The object of the present invention is achieved like this, a kind of drilling tool centering short segment, including a nipple body, the inside of described nipple body is provided with the drilling fluid runner of up/down perforation, on the sidewall of described nipple body, circumference is fixedly uniformly arranged with multiple permission drilling fluid and flows to the check valve outside described nipple body from described drilling fluid runner, and the radial outside end of described check valve can along the central shaft telescopic moving of described check valve.
In a better embodiment of the present invention, described check valve includes valve body, one end of described valve body is provided with and the entrance of described drilling fluid flow passage, the inside of described valve body, position seals near described entrance is arranged with and can move axially, and can seal described entrance poppet valve core, described poppet valve core be internally provided with poppet valve core runner, one end of described poppet valve core runner connects with the inside of described valve body, the inside of described valve body, position seals away from described entrance is arranged with the pilot valve that can move axially, one end of described pilot valve is set on described poppet valve core, the other end of described pilot valve seals the radial outside end being become described check valve by the other end of described valve body, described pilot valve be internally provided with pilot valve runner, described poppet valve core runner and described pilot valve runner are mutually communicated, being provided with on the sidewall of the other end of described valve body can with the outlet of described pilot valve flow passage.
In a better embodiment of the present invention, one end of described poppet valve core be provided with diameter to described Way in convergent and described entrance can be sealed first cone section, the sidewall of described poppet valve core is provided with the first step portion that diameter increases, on the sidewall of described poppet valve core, the described first position bored between section and described first step portion being provided with the first intercommunicating pore connecting described poppet valve core runner, described poppet valve core is positioned at described first step portion and is connected with the inner wall sealing of described valve body away from the sidewall of the side of described entrance; The sidewall of described pilot valve is provided with the second intercommunicating pore connecting described pilot valve runner with described outlet.
In a better embodiment of the present invention, the inside of described valve body, one end away from described entrance are provided with the second step portion that diameter reduces, described outlet is arranged on the sidewall between the other end of described valve body and described second step portion, described valve inner is provided with pilot valve via between the other end of described valve body and described second step portion, the other end of described pilot valve seals by described pilot valve via, the sidewall of described pilot valve is provided with described second step portion against the 3rd stage portion.
In a better embodiment of the present invention, the center of described poppet valve core is provided with central canal, described poppet valve core runner is set inside described central canal, described central canal is located in described pilot valve runner away from one end sealing shroud in described first step portion, the outside of described central canal is provided with the opening annular pockets towards described pilot valve, it is arranged with spring between described poppet valve core and described pilot valve, one end of described spring is resisted against the bottom land of described annular pockets, the other end of described spring is resisted against in described 3rd stage portion on a side end face of described poppet valve core.
In a better embodiment of the present invention, described valve body includes the first valve body near described drilling fluid runner, the other end of described first valve body is sealedly connected with the second valve body, and one end of described first valve body arranges described entrance, and the sidewall of described second valve body arranges described outlet.
In a better embodiment of the present invention, the other end of described valve body is provided with adpting flange portion, described adpting flange portion is provided with connection screwed hole, is equipped with the attachment screw of fixing described valve body in described connection screwed hole.
In a better embodiment of the present invention, the other end of described pilot valve is hemispherical configuration.
In a better embodiment of the present invention, on the sidewall of described nipple body, same axial positions is provided with the described check valve of two radial symmetric, and the multiple described check valve that axially different position is arranged is that circumference is evenly arranged along described nipple body.
In a better embodiment of the present invention, the interior of described nipple body is provided with pipe nipple runner, described pipe nipple runner includes multiple shaft orientation flowing channel, check valve connection described in each described shaft orientation flowing channel and, the sidewall of each described shaft orientation flowing channel is evenly arranged with the radial communication hole of the described shaft orientation flowing channel of multiple connection and the outside of described nipple body; The lower end of each described shaft orientation flowing channel is through with the outer wall of described nipple body.
From the above mentioned, drilling tool centering short segment provided by the invention, its internal drilling fluid flows to its outside annular space by the check valve and pipe nipple runner being arranged on sidewall, it is effectively isolated drilling tool centering short segment and the borehole wall, reduce drilling tool centering short segment to contact with the direct-type of the borehole wall, wearing away torsion thus effectively dropping, improving the performance of deviation control with drilling straight well;This drilling tool centering short segment can make the pressure of the drill normal delivery that ground installation applies to drill bit so that drilling tool can efficiently creep into, and lock of tool drilling reduces simultaneously, and the extended distance of drilling tool increases, and reduces drilling cost while improving drilling efficiency.
Accompanying drawing explanation
The following drawings is only intended to, in the present invention being schematically illustrated and explaining, not delimit the scope of the invention. Wherein:
Fig. 1: for the structural representation of the drilling tool centering short segment 100 of the present invention.
Fig. 2: for A-A sectional view in Fig. 1.
Fig. 3: for B-B sectional view in Fig. 1.
Fig. 4: for the structural representation of check valve 2 of the drilling tool centering short segment 100 of the present invention.
Fig. 5 a: contact borehole wall schematic diagram for check valve 2 in drilling tool centering short segment 100 use procedure of the present invention.
Fig. 5 b: for the schematic diagram of drilling fluid flowing in drilling tool centering short segment 100 use procedure of the present invention.
Fig. 5 c: for the schematic diagram of the drilling tool centering short segment 100 righting drilling rod of the present invention.
Fig. 5 d: the first stressing conditions schematic diagram before resetting for the drilling tool centering short segment 100 of the present invention.
Fig. 5 e: reset front the second stressing conditions schematic diagram for the drilling tool centering short segment 100 of the present invention.
Fig. 5 f: reset schematic diagram for the drilling tool centering short segment 100 of the present invention.
In figure: 100, drilling tool centering short segment; 1, nipple body; 10, jointing; 11, drilling fluid runner; 12, pipe nipple runner; 121, shaft orientation flowing channel; 122, radial communication hole; 2, check valve; 21, valve body; 211, entrance; 212, outlet; 213, second step portion; 214, pilot valve via; 215, the first valve body; 216, the second valve body; 217, adpting flange portion; 2171, screwed hole is connected; 2172, attachment screw; 218, the second sealing ring; 219, the first sealing ring; 22, poppet valve core; 221, poppet valve core runner; 222, the first cone section; 223, first step portion; 224, the first intercommunicating pore; 225, annular pockets; 23, pilot valve; 231, pilot valve runner; 232, the second intercommunicating pore; 233, the 3rd stage portion; 3, spring.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and effect are more clearly understood from, now comparison accompanying drawing illustrates the specific embodiment of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, drilling tool centering short segment 100 provided by the invention, including a nipple body 1, the inside of nipple body 1 is provided with the drilling fluid runner 11 of up/down perforation, for the ease of jointed rod (prior art, not shown), the inside top of nipple body 1 is connected to a jointing 10, in use, nipple body 1 is by jointing 10 jointed rod (prior art, not shown), the interior bottom portion threaded connection drill stem hypomere of nipple body 1 or drill bit (prior art, not shown); On the sidewall of nipple body 1, circumference is fixedly uniformly arranged with multiple permission drilling fluid and flows to the check valve 2 outside nipple body 1 from drilling fluid runner 11, multiple check valves 2 can be constituted by organizing the check valve 2 that radially symmetry or circumference are uniformly arranged more, in the present embodiment, the quantity of check valve 2 is 4 groups, often group 2, amounts to 8; The radial outside end of check valve 2 can along the central shaft telescopic moving of check valve 2. In the present embodiment, on the sidewall of nipple body 1, same axial positions arranges one group of check valve 2, often group includes the described check valve 2 of two radial symmetric, the many groups of described check valves 2 that axially different position is arranged are evenly arranged along nipple body 1 in circumference, and the active force of the drilling fluid suffered by radial outside end of check valve 2 is uniform.
Use in the process of drilling tool centering short segment 100 aided drilling, drilling fluid can pass through drilling fluid runner 11, flow to the annular space between drilling tool centering short segment 100 and the borehole wall through check valve 2, once the radial outside end of check valve 2 contacts with the borehole wall, under the effect of annular space drilling fluid, the radial outside end of check valve 2 moves inward along central shaft, and driving drilling rod to separate with the borehole wall, it is achieved drilling tool centering short segment 100 drops and wears away the function turned round with deviation control with drilling straight well.
Further, as shown in Figure 4, check valve 2 includes valve body 21, one end of valve body 21 is provided with the entrance 211 connected with drilling fluid runner 11, the inside of valve body 21, position seals near entrance 211 be arranged with can move axially and can sealed entry 211 poppet valve core 22, in the present embodiment, the first sealing ring 219 for sealing it is provided with between the inwall of poppet valve core 22 outer wall and valve body 21; Poppet valve core 22 be internally provided with poppet valve core runner 221, one end of poppet valve core runner 221 connects with the inside of valve body 21, the inside of valve body 21, position seals away from entrance 211 are arranged with the pilot valve 23 that can move axially, in the present embodiment, the second sealing ring 218 for sealing it is provided with between the inwall of pilot valve 23 outer wall and valve body 21; One end of pilot valve 23 is set on poppet valve core 22, the other end of pilot valve 23 seals the radial outside end being become check valve 2 by the other end of valve body 21, pilot valve 23 be internally provided with pilot valve runner 231, poppet valve core runner 221 and pilot valve runner 231 are mutually communicated, and the sidewall of the other end of valve body 21 is provided with the outlet 212 that can connect with pilot valve runner 231.
Further, as shown in Figure 4, one end of poppet valve core 22 be provided with diameter to entrance 211 direction convergent and can sealed entry 211 first cone section 222, the sidewall of poppet valve core 22 is provided with the first step portion 223 that diameter increases, on the sidewall of poppet valve core 22, first position bored between section 222 and first step portion 223 being provided with the first intercommunicating pore 224 connecting poppet valve core runner 221, poppet valve core 22 is positioned at first step portion 223 and is connected with the inner wall sealing of valve body 21 away from the sidewall of the side of entrance 211; The sidewall of pilot valve 23 is provided with the second intercommunicating pore 232 of connection pilot valve runner 231 and outlet 212.
Further, as shown in Figure 4, the inside of valve body 21, one end away from entrance 211 are provided with the second step portion 213 that diameter reduces, outlet 212 is arranged on the sidewall between the other end of valve body 21 and second step portion 213, valve body 21 is internally located between the other end of valve body 21 and second step portion 213 and is provided with pilot valve via 214, the other end of pilot valve 23 seals by pilot valve via 214, the sidewall of pilot valve 23 is provided with second step portion 213 against the 3rd stage portion 233. When pilot valve 23 moves axially outward, when the 3rd stage portion 233 leans with second step portion 213, pilot valve 23 stops moving axially.
Further, as shown in Figure 4, the center of poppet valve core 22 is provided with central canal 220, central canal 220 is internal arranges described poppet valve core runner 221, one end sealing shroud away from first step portion 223 of central canal 220 is located in pilot valve runner 231, the outside of central canal 220 is provided with the opening annular pockets 225 towards pilot valve 23, spring 3 it is arranged with between poppet valve core 22 and pilot valve 23, one end of spring 3 is resisted against the bottom land of annular pockets 225, and the other end of spring 3 is resisted against in the 3rd stage portion 233 on a side end face of poppet valve core 22.
Further, as shown in Figure 4, valve body 21 includes the first valve body 215 near drilling fluid runner 11, and the other end of the first valve body 215 is sealedly connected with the second valve body 216, one end inlet porting 211 of the first valve body 215, and the sidewall of the second valve body 216 arranges outlet 212. First valve body 215 and the second valve body 216 are connected by thread seal.
Further, as shown in Fig. 1, Fig. 3, Fig. 4, the other end of valve body 21 is provided with adpting flange portion 217, adpting flange portion 217 is provided with connection screwed hole 2171, connects the attachment screw 2172 being equipped with fixed valve body 21 in screwed hole 2171. Check valve 2 is fixed on the sidewall of nipple body 1 by attachment screw 2172.
Further, as shown in Figure 3, Figure 4, the other end of pilot valve 23 is hemispherical configuration. Hemispherical configuration profile is round and smooth, being conducive to improving the uniform force of end, and decreases the probability of the end wear borehole wall, dropping, thus improve, the performance wearing away torsion.
Further, as shown in Figure 1 and Figure 2, the interior of nipple body 1 is provided with pipe nipple runner 12, pipe nipple runner 12 includes multiple shaft orientation flowing channel 121 (for ease of processing, shaft orientation flowing channel 121 faces down setting from the top end of nipple body 1, is generally adopted drilling processing), each shaft orientation flowing channel 121 connects with a check valve 2, in the present embodiment, each shaft orientation flowing channel 121 connects with the outlet 212 on valve body 21 respectively; The sidewall of each shaft orientation flowing channel 121 is evenly arranged with the radial communication hole 122 of multiple connection shaft orientation flowing channel 121 and the outside of nipple body 1; The lower end of shaft orientation flowing channel 121 through with the outer wall of nipple body 1 (arc transition connects), it is prevented that talus deposit in pipe nipple runner 12. Drilling fluid in drilling fluid runner 11 can pass through check valve 2, pipe nipple runner 12 flows to the annular space between drilling tool centering short segment 100 and the borehole wall.
When the drilling tool centering short segment 100 using the present invention carries out drillng operation, first drilling tool centering short segment 100 is arranged on the middle and lower part of drilling rod, in lower going-into-well, starts drillng operation. As shown in Figure 5 a, drilling fluid runner 11 injects drilling fluid, when pilot valve 23 contacts the borehole wall, pilot valve 23 is compressed spring 3 and moves to the inside, and pilot valve runner 231 is connected with drilling tool centering short segment 100 annular space by the outlet 212 on the second intercommunicating pore 232, valve body 21, pipe nipple runner 12. Meanwhile, as shown in Figure 5 b, in drilling fluid runner 11 under the effect of drilling fluid, poppet valve core 22 compresses spring 3 and moves laterally, and poppet valve core runner 221 is connected with the entrance 211 on valve body 21 by the first intercommunicating pore 224, the inner chamber of valve body 21. Now, as shown in Figure 5 c, drilling fluid enters the annular space between drilling tool centering short segment 100 and the borehole wall by entrance 211, poppet valve core runner 221, pilot valve runner 231, outlet 212, pipe nipple runner 12, drilling fluid acts on the borehole wall, under fluid power effect, drilling tool centering short segment 100 drives drill string, drill bit to separate with the borehole wall, plays to drop wearing away the effect turned round with righting.
The reset of drilling tool centering short segment 100 has two kinds of situations, the first situation is as fig 5d, the active force of pilot valve 23 tip inside is acted on for F1 with the drilling fluid flowing through pilot valve runner 231, with the active force outside pilot valve 23 end of the liquid effects in drilling tool centering short segment 100 annular space for F2, when F1 is more than F2, in pilot valve runner 231 under the combined effect of drilling fluid and spring 3, pilot valve 23 is circumferentially outer moves reset, pilot valve runner 231 and pipe nipple runner 12 disconnect, now, the liquid effects dynamic balance suffered by both sides of poppet valve core 22 medial end, under the effect of annular pockets 225 inner spring 3, poppet valve core 22 is mobile to the inside to be resetted, as shown in figure 5f, first cone section 222 sealed entry 211, valve body 21 is internal to be disconnected with drilling fluid runner 11.
The second situation that drilling tool centering short segment 100 resets is as depicted in fig. 5e, when the pressure of drilling fluid is less than liquid pressure in drilling tool centering short segment 100 annular space, liquid in annular space enters in poppet valve core runner 221, the directed force F 3 of poppet valve core 22 end is acted on the drilling fluid in drilling fluid runner 11, with the directed force F 4 in poppet valve core 22 end of the liquid effects in drilling tool centering short segment 100 annular space in poppet valve core runner 221, when F3 is less than F4, liquid in drilling tool centering short segment 100 annular space flows to pilot valve runner 231, in poppet valve core runner 221, liquid in drilling tool centering short segment 100 annular space and under the combined effect of spring 3, poppet valve core 22 is mobile to the inside to be resetted, first cone section 222 sealed entry 211, valve body 21 is internal to be disconnected with drilling fluid runner 11, drilling fluid does not enter back in valve body 21, now, the liquid effects dynamic balance suffered by both sides of pilot valve 23 outer end, under the effect of spring 3, pilot valve 23 is circumferentially outer moves reset, and pilot valve runner 231 and pipe nipple runner 12 disconnect.
From the above mentioned, drilling tool centering short segment provided by the invention, its internal drilling fluid flows to its outside annular space by the check valve and pipe nipple runner being arranged on sidewall, it is effectively isolated drilling tool centering short segment and the borehole wall, drilling tool centering short segment is avoided to contact with the direct-type of the borehole wall, wearing away torsion thus effectively dropping, improving the performance of deviation control with drilling straight well; This drilling tool centering short segment can make the pressure of the drill normal delivery that ground installation applies to drill bit so that drilling tool can efficiently creep into, and lock of tool drilling reduces simultaneously, and the extended distance of drilling tool increases, and reduces drilling cost while improving drilling efficiency.
The foregoing is only the schematic detailed description of the invention of the present invention, be not limited to the scope of the present invention. Any those skilled in the art, equivalent variations done under without departing from the design of the present invention and the premise of principle and amendment, all should belong to the scope of protection of the invention.
Claims (10)
1. a drilling tool centering short segment, including a nipple body, the inside of described nipple body is provided with the drilling fluid runner of up/down perforation, it is characterized in that: on the sidewall of described nipple body, circumference is fixedly uniformly arranged with multiple permission drilling fluid and flows to the check valve outside described nipple body from described drilling fluid runner, and the radial outside end of described check valve can along the central shaft telescopic moving of described check valve.
2. drilling tool centering short segment as claimed in claim 1, it is characterized in that: described check valve includes valve body, one end of described valve body is provided with and the entrance of described drilling fluid flow passage, the inside of described valve body, position seals near described entrance is arranged with and can move axially, and can seal described entrance poppet valve core, described poppet valve core be internally provided with poppet valve core runner, one end of described poppet valve core runner connects with the inside of described valve body, the inside of described valve body, position seals away from described entrance is arranged with the pilot valve that can move axially, one end of described pilot valve is set on described poppet valve core, the other end of described pilot valve seals the radial outside end being become described check valve by the other end of described valve body, described pilot valve be internally provided with pilot valve runner, described poppet valve core runner and described pilot valve runner are mutually communicated, being provided with on the sidewall of the other end of described valve body can with the outlet of described pilot valve flow passage.
3. drilling tool centering short segment as claimed in claim 2, it is characterized in that: one end of described poppet valve core be provided with diameter to described Way in convergent and described entrance can be sealed first cone section, the sidewall of described poppet valve core is provided with the first step portion that diameter increases, on the sidewall of described poppet valve core, the described first position bored between section and described first step portion being provided with the first intercommunicating pore connecting described poppet valve core runner, described poppet valve core is positioned at described first step portion and is connected with the inner wall sealing of described valve body away from the sidewall of the side of described entrance;The sidewall of described pilot valve is provided with the second intercommunicating pore connecting described pilot valve runner with described outlet.
4. drilling tool centering short segment as claimed in claim 3, it is characterized in that: the inside of described valve body, one end away from described entrance are provided with the second step portion that diameter reduces, described outlet is arranged on the sidewall between the other end of described valve body and described second step portion, described valve inner is provided with pilot valve via between the other end of described valve body and described second step portion, the other end of described pilot valve seals by described pilot valve via, the sidewall of described pilot valve is provided with described second step portion against the 3rd stage portion.
5. drilling tool centering short segment as claimed in claim 4, it is characterized in that: the center of described poppet valve core is provided with central canal, described poppet valve core runner is set inside described central canal, described central canal is located in described pilot valve runner away from one end sealing shroud in described first step portion, the outside of described central canal is provided with the opening annular pockets towards described pilot valve, it is arranged with spring between described poppet valve core and described pilot valve, one end of described spring is resisted against the bottom land of described annular pockets, the other end of described spring is resisted against in described 3rd stage portion on a side end face of described poppet valve core.
6. drilling tool centering short segment as claimed in claim 2, it is characterized in that: described valve body includes the first valve body near described drilling fluid runner, the other end of described first valve body is sealedly connected with the second valve body, one end of described first valve body arranges described entrance, and the sidewall of described second valve body arranges described outlet.
7. drilling tool centering short segment as claimed in claim 2, it is characterised in that: the other end of described valve body is provided with adpting flange portion, described adpting flange portion is provided with connection screwed hole, is equipped with the attachment screw of fixing described valve body in described connection screwed hole.
8. drilling tool centering short segment as claimed in claim 2, it is characterised in that: the other end of described pilot valve is hemispherical configuration.
9. drilling tool centering short segment as claimed in claim 1, it is characterized in that: on the sidewall of described nipple body, same axial positions is provided with the described check valve of two radial symmetric, the multiple described check valve that axially different position is arranged is that circumference is evenly arranged along described nipple body.
10. drilling tool centering short segment as claimed in claim 1, it is characterized in that: the interior of described nipple body is provided with pipe nipple runner, described pipe nipple runner includes multiple shaft orientation flowing channel, check valve connection described in each described shaft orientation flowing channel and, the sidewall of each described shaft orientation flowing channel is evenly arranged with the radial communication hole of the described shaft orientation flowing channel of multiple connection and the outside of described nipple body; The lower end of each described shaft orientation flowing channel is through with the outer wall of described nipple body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143505.2A CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143505.2A CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105649549A true CN105649549A (en) | 2016-06-08 |
| CN105649549B CN105649549B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610143505.2A Expired - Fee Related CN105649549B (en) | 2016-03-14 | 2016-03-14 | Drilling tool centering short segment |
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Cited By (2)
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| CN108590546A (en) * | 2018-07-04 | 2018-09-28 | 中国地质大学（北京） | Power drilling tool tests erection device |
| CN112922562A (en) * | 2021-03-12 | 2021-06-08 | 河南理工大学 | Multifunctional gas extraction hole sealing method |
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| CN205400607U (en) * | 2016-03-14 | 2016-07-27 | 中国石油大学(北京) | Nipple joint is right to drilling tool |
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2016
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| WO2003087526A1 (en) * | 2002-04-05 | 2003-10-23 | Specialised Petroleum Services Group Limited | Stabiliser, jetting and circulating tool |
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| WO2012177460A2 (en) * | 2011-06-23 | 2012-12-27 | Baker Hughes Incorporated | Production system and method of varying restrictions to flow along the same |
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|---|---|---|---|---|
| CN108590546A (en) * | 2018-07-04 | 2018-09-28 | 中国地质大学（北京） | Power drilling tool tests erection device |
| CN108590546B (en) * | 2018-07-04 | 2023-05-26 | 中国地质大学（北京） | Power drilling tool experiment righting device |
| CN112922562A (en) * | 2021-03-12 | 2021-06-08 | 河南理工大学 | Multifunctional gas extraction hole sealing method |
| CN112922562B (en) * | 2021-03-12 | 2022-11-25 | 河南理工大学 | Multifunctional gas extraction hole sealing method |
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| CN105649549B (en) | 2017-10-27 |
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