CN106168118B - A kind of Worm-gear type drillstring in horizontal section is sent into instrument - Google Patents
A kind of Worm-gear type drillstring in horizontal section is sent into instrument Download PDFInfo
- Publication number
- CN106168118B CN106168118B CN201610524525.4A CN201610524525A CN106168118B CN 106168118 B CN106168118 B CN 106168118B CN 201610524525 A CN201610524525 A CN 201610524525A CN 106168118 B CN106168118 B CN 106168118B
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- CN
- China
- Prior art keywords
- worm
- righting
- cylinder
- screwed connection
- shaft
- 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.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000000806 elastomer Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gear Transmission (AREA)
Abstract
During being crept into the present invention relates to a kind of horizontal well, axial feeding thrust is provided for drill string, the Worm-gear type drillstring in horizontal section for reducing drill string and frictional resistance is sent into instrument.It is difficult that it solves the problems, such as that drillstring in horizontal section is sent into.Its technical scheme is：Elastomer stator is fixed on stator case inner chamber, stator case upper end and the screwed connection of top connection lower end, stator case lower end and the screwed connection of universal shaft housing upper end；Screw rotor inserts elastomer stator inner chamber, screw rotor lower end and the screwed connection of universal drive shaft upper end；Worm shaft is inserted in righting tube inner chamber stepped hole, worm shaft upper end and the screwed connection of universal drive shaft lower end, worm shaft lower end and the screwed connection of end cap upper end；Righting cylinder upper end and the screwed connection of universal shaft housing lower end, righting cylinder lower end and the screwed connection of lower contact upper end；Worm gear seat, worm gear and bearing pin integral installation are in the axial pass trough on three righting ribs of righting cylinder.The present invention provides power for drill string axial feeding, effectively extends horizontal section wellbore length.
Description
Technical field
During being crept into the present invention relates to a kind of horizontal well, axial feeding thrust is provided for drill string, reduces drill string and well
The Worm-gear type drillstring in horizontal section of frictional resistance is sent into instrument.
Background technology
In oil and gas industry, the application of horizontal well technology substantially increases well yield and oil gas field recovery ratio,
Reduce oil-gas field development cost.However, during horizontal well drilling, because the frictional resistance of horizontal section wellbore and drill string is big, lead
Cause drillstring in horizontal section to be sent into difficult, seriously constrain the length of horizontal section wellbore.Drill string, which is sent into difficulty, can further result in drill string
Generation deflection deformation and destruction, the exploitation to oil-gas reservoir resource are totally unfavorable.
There are some on domestic and international market at present dedicated for reducing the antifriction of horizontal section wellbore and drill string frictional resistance
Instrument, representative is the antifriction short circuit for installing roller and the hydroscillator for producing continuous shaking, the former by drill string and
The static friction of well is changed into rolling friction, and the static friction of drill string and well is changed into dynamic friction, all risen to a certain extent by the latter
The effect of antifriction is arrived.But above-mentioned antifriction instrument all only hinders based on the friction reduced between drill string and well
Power, with the increase of well horizontal section length, it is difficult to ensure that drill string is effectively sent into all the time.
Therefore above-mentioned technical background is based on, the present invention is special to be provided a kind of Worm-gear type drillstring in horizontal section and is sent into instrument, can be with
Axial feeding thrust is actively provided for drill string, helps drill string to be effectively sent into.
The content of the invention
The purpose of the present invention is：In order to solve the problems, such as that it is difficult that drillstring in horizontal section is sent into, spy provides a kind of Worm-gear type
Drillstring in horizontal section is sent into instrument.
In order to achieve the above object, the present invention uses following technical scheme：A kind of Worm-gear type drillstring in horizontal section is sent into
Instrument, be by top connection, screw rotor, elastomer stator, stator case, universal drive shaft, universal shaft housing, worm shaft, upper sealing ring,
Upper taper roll bearing, righting cylinder, screw, bearing pin, worm gear seat, worm gear, lower taper roll bearing, lower seal, end cap and under
Joint is formed；Its architectural feature is：Top connection upper end and upper drilling string screwed connection, lower contact lower end and lower drilling string screw thread connect
Connect；Elastomer stator is fixed on stator case inner chamber, stator case upper end and the screwed connection of top connection lower end, stator case lower end and
The screwed connection of universal shaft housing upper end；Screw rotor inner chamber sets an axially extending bore, and screw rotor lower end is arranged to box thread, spiral shell
Bar rotor bottom is circumferentially uniformly arranged three inclined hole connection interior or exterior spaces；Screw rotor inserts elastomer stator inner chamber, screw rotor
Lower end and the screwed connection of universal drive shaft upper end；Universal drive shaft lower end is arranged to box thread, and universal drive shaft bottom is circumferentially uniformly arranged three tiltedly
Hole connects interior or exterior space；Worm shaft upper end is arranged to male thread, and lower end is arranged to male thread, and the cylindrical top of worm shaft sets a circle
Raised step, sealed groove is provided with the raised step face of cylinder, the cylindrical middle part of worm shaft is arranged to worm screw, and worm shaft inner chamber is set
Put the lower upper surface of axially extending bore connection；End cover lumen sets an axially extending bore, and end cap upper end is provided with box thread, and end cap is cylindrical
Bottom sets a circle raised step, and raised step is provided with sealed groove on the face of cylinder；Righting tube inner chamber set both ends it is big,
Middle small axial step hole, righting cylinder upper end are provided with male thread, and righting cylinder lower end is provided with box thread, during righting cylinder is cylindrical
Portion is circumferentially uniformly arranged three righting ribs, sets an axial pass trough to connect righting cylinder interior or exterior space, righting rib on each righting rib
Step surface is provided with outside upper axial pass trough, screw hole is provided with step surface；Upper sealing ring is arranged on worm shaft upper lobes
In sealed groove on step circles cylinder, lower seal is arranged in the sealed groove on end cap lower lobes step circles cylinder；
Worm shaft is inserted in righting tube inner chamber stepped hole, worm shaft upper end and the screwed connection of universal drive shaft lower end, worm shaft lower end and end cap
Upper end screwed connection；Upper taper roll bearing is arranged on the step surface on righting tube inner chamber stepped hole top, lower taper roller axle
Hold on the step surface of righting tube inner chamber stepped hole bottom；Righting cylinder upper end and the screwed connection of universal shaft housing lower end, are helped
Positive cylinder lower end and the screwed connection of lower contact upper end；Setting is fluted in the middle part of worm gear seat, and groove both sides are provided with through hole, worm gear seat two
End is provided with stepped hole；The centrally disposed axially extending bore of worm gear；Worm gear is arranged in worm gear seat central slot with bearing pin；Worm gear
In the axial pass trough on three righting ribs of righting cylinder, worm gear seat and righting cylinder are consolidated with screw for seat, worm gear and bearing pin integral installation
Fixed connection.
After installation, the worm and worm wheel at the cylindrical middle part of worm-wheel shaft form drive connection.
The beneficial effects of the invention are as follows：(1) present invention can be rotated to be drill string axial feeding using worm gear and provide power, be changed
The mode that traditional well drilling drill string is sent into is become, horizontal section wellbore length can be greatly prolonged；(2) present invention is driven using drilling fluid
Dynamic, control is simple and reliable；(3) present invention is pure mechanic structure, is readily adapted to accommodate underground complex working condition.
Brief description of the drawings
Fig. 1 is the structural representation that a kind of Worm-gear type drillstring in horizontal section of the present invention is sent into instrument；
Fig. 2 is the structural representation of righting cylinder of the present invention, worm gear seat and worm gear；
Fig. 3 is the schematic three dimensional views of righting cylinder of the present invention, worm gear seat and worm gear；
Fig. 4 is the schematic three dimensional views of righting cylinder of the present invention；
Fig. 5 is the schematic three dimensional views of worm gear seat of the present invention, bearing pin and worm gear；
In figure：1. top connection, 2. screw rotors, 3. elastomer stators, 4. stator cases, 5. universal drive shafts, 6. universal shaft housings,
7. worm shaft, sealing ring on 8., taper roll bearing, 10. righting cylinders, 11. screws, 12. bearing pins, 13. worm gear seats, 14. on 9.
Worm gear, 15. times taper roll bearings, 16. lower seals, 17. end caps, 18. lower contacts.
Embodiment
As shown in figure 1, a kind of Worm-gear type drillstring in horizontal section of the present invention is sent into instrument, it is by top connection 1, screw rotor
2nd, elastomer stator 3, stator case 4, universal drive shaft 5, universal shaft housing 6, worm shaft 7, upper sealing ring 8, upper taper roll bearing 9,
Righting cylinder 10, screw 11, bearing pin 12, worm gear seat 13, worm gear 14, lower taper roll bearing 15, lower seal 16, end cap 17 and under
Joint 18 is formed；Its architectural feature is：The upper end of top connection 1 and upper drilling string screwed connection, the lower end of lower contact 18 and lower drilling string
Screwed connection；Elastomer stator 3 is fixed on the inner chamber of stator case 4, the upper end of stator case 4 and the lower end screwed connection of top connection 1, stator
The lower end of housing 4 and the upper end screwed connection of universal shaft housing 6；The inner chamber of screw rotor 2 sets an axially extending bore, the lower end of screw rotor 2
Box thread is arranged to, the bottom of screw rotor 2 is circumferentially uniformly arranged three inclined hole connection interior or exterior spaces；Screw rotor 2 inserts rubber
The inner chamber of stator 3, the lower end of screw rotor 2 and the upper end screwed connection of universal drive shaft 5；The lower end of universal drive shaft 5 is arranged to box thread, universal drive shaft 5
Bottom is circumferentially uniformly arranged three inclined hole connection interior or exterior spaces；The upper end of worm shaft 7 is arranged to male thread, and lower end is arranged to public spiral shell
Line, 7 cylindrical top of worm shaft set a circle raised step, are provided with sealed groove on the raised step face of cylinder, worm shaft 7 is cylindrical
Middle part is arranged to worm screw, and the inner chamber of worm shaft 7 sets an axially extending bore to connect lower upper surface；The inner chamber of end cap 17 sets one axially to lead to
Hole, the upper end of end cap 17 are provided with box thread, and 17 cylindrical bottom of end cap sets a circle raised step, and raised step is set on the face of cylinder
There is sealed groove；Upper sealing ring 8 is arranged in the sealed groove on the upper lobes step circles cylinder of worm shaft 7, lower seal 16
In the sealed groove on the lower lobes step circles cylinder of end cap 17；Worm shaft 7 is inserted in the inner chamber stepped hole of righting cylinder 10,
The upper end of worm shaft 7 and the lower end screwed connection of universal drive shaft 5, the lower end of worm shaft 7 and the upper end screwed connection of end cap 17；Upper taper roller axle
Hold 9 to be arranged on the step surface on the inner chamber stepped hole top of righting cylinder 10, lower taper roll bearing 15 is arranged on the inner chamber of righting cylinder 10
On the step surface of stepped hole bottom；The upper end of righting cylinder 10 and the lower end screwed connection of universal shaft housing 6, the lower end of righting cylinder 10 connect with
The screwed connection of first 18 upper end；As shown in Fig. 2, Fig. 3 and Fig. 5, the setting of the middle part of worm gear seat 13 is fluted, and groove both sides are provided with logical
Hole, worm gear seat 13 are provided at both ends with stepped hole；The centrally disposed axially extending bore of worm gear 14；Worm gear 14 is arranged on worm gear with bearing pin 12
In 13 central slots of seat；The axial direction of worm gear seat 13, worm gear 14 and the integral installation of bearing pin 12 on 10 3 righting ribs of righting cylinder leads to
In groove, worm gear seat 13 is fixedly connected with righting cylinder 10 with screw 11.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the inner chamber of righting cylinder 10 sets the axial step hole that a both ends are big, centre is small,
The upper end of righting cylinder 10 is provided with male thread, and the lower end of righting cylinder 10 is provided with box thread, and 10 cylindrical middle part of righting cylinder is circumferentially uniformly set
Three righting ribs are put, the interior or exterior space of axial pass trough connection righting cylinder 10 is set on each righting rib, axial pass trough on righting rib
Outside is provided with step surface, and screw hole is provided with step surface.
The operation principle that a kind of Worm-gear type drillstring in horizontal section of the present invention is sent into instrument is：The tripping in present invention is to horizontal segment
Well, turn on pump circulating fluid, a part of drive screw rotor 2 of drilling fluid rotate, and another part is from the central through hole of screw rotor 2
Flow through, drilling fluid flows through through the bottom inclined hole of universal drive shaft 5 from the intracavity through hole of worm shaft 7；Screw rotor 2 drives universal drive shaft 5 to rotate, and ten thousand
Worm-wheel shaft 7 is driven to rotate to axle 5, worm-wheel shaft 7 drives worm gear 14 to rotate；Worm gear 14 and well contact, worm gear 14 are sent out in well
It is raw to roll；The present invention is rolled using the active of worm gear 14 and is used as power, is sent into for drill string and is provided axial thrust, it is complete distinguish and with
Toward the operation principle of horizontal well antifriction.
Claims (2)
1. a kind of Worm-gear type drillstring in horizontal section is sent into instrument, be by top connection (1), screw rotor (2), elastomer stator (3),
Stator case (4), universal drive shaft (5), universal shaft housing (6), worm shaft (7), upper sealing ring (8), upper taper roll bearing (9),
Righting cylinder (10), screw (11), bearing pin (12), worm gear seat (13), worm gear (14), lower taper roll bearing (15), lower seal
(16), end cap (17) and lower contact (18) are formed；It is characterized in that：Top connection (1) upper end and upper drilling string screwed connection, lower contact
(18) lower end and lower drilling string screwed connection；Elastomer stator (3) is fixed on stator case (4) inner chamber, stator case (4) upper end and
Top connection (1) lower end screwed connection, stator case (4) lower end and universal shaft housing (6) upper end screwed connection；Screw rotor (2)
Inner chamber sets an axially extending bore, and screw rotor (2) lower end is arranged to box thread, and screw rotor (2) bottom is circumferentially uniformly arranged three
Individual inclined hole connects interior or exterior space；Screw rotor (2) inserts elastomer stator (3) inner chamber, screw rotor (2) lower end and universal drive shaft (5)
Upper end screwed connection；Universal drive shaft (5) lower end is arranged to box thread, and universal drive shaft (5) bottom is circumferentially uniformly arranged three inclined hole connections
Interior or exterior space；Worm shaft (7) upper end is arranged to male thread, and lower end is arranged to male thread, and the cylindrical top of worm shaft (7) sets a circle
Raised step, sealed groove is provided with the raised step face of cylinder, worm shaft (7) cylindrical middle part is arranged to worm screw, worm shaft (7)
Inner chamber sets an axially extending bore to connect lower upper surface；End cap (17) inner chamber sets an axially extending bore, and end cap (17) upper end is provided with
Box thread, the cylindrical bottom of end cap (17) set a circle raised step, and raised step is provided with sealed groove on the face of cylinder；Upper sealing
Enclose in the sealed groove that (8) are arranged on worm shaft (7) upper lobes step circles cylinder, lower seal (16) is arranged on end cap
(17) in the sealed groove on lower lobes step circles cylinder；Worm shaft (7) is inserted in the stepped hole of righting cylinder (10) inner chamber, worm screw
Axle (7) upper end and universal drive shaft (5) lower end screwed connection, worm shaft (7) lower end and end cap (17) upper end screwed connection；Upper circular cone rolling
Sub- bearing (9) is arranged on the step surface on righting cylinder (10) inner chamber stepped hole top, and lower taper roll bearing (15) is arranged on and helped
On the step surface of positive cylinder (10) inner chamber stepped hole bottom；Righting cylinder (10) upper end and universal shaft housing (6) lower end screwed connection, are helped
Positive cylinder (10) lower end and lower contact (18) upper end screwed connection；Setting is fluted in the middle part of worm gear seat (13), and groove both sides are provided with
Through hole, worm gear seat (13) are provided at both ends with stepped hole；The centrally disposed axially extending bore of worm gear (14)；Worm gear (14) bearing pin (12)
In worm gear seat (13) central slot；Worm gear seat (13), worm gear (14) and bearing pin (12) integral installation are in righting cylinder (10)
In axial pass trough on three righting ribs, worm gear seat (13) is fixedly connected with righting cylinder (10) with screw (11)；Installation with
Afterwards, the worm and worm wheel (14) at worm shaft (7) cylindrical middle part form drive connection.
2. Worm-gear type drillstring in horizontal section according to claim 1 is sent into instrument, it is characterized in that：The righting cylinder (10)
Inner chamber sets that both ends are big, middle small axial step hole, and righting cylinder (10) upper end is provided with male thread, under righting cylinder (10)
End is provided with box thread, and righting cylinder (10) cylindrical middle part is circumferentially uniformly arranged three righting ribs, an axle is set on each righting rib
To groove connection righting cylinder (10) interior or exterior space, step surface is provided with outside the axial pass trough on righting rib, is set on step surface
There is screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524525.4A CN106168118B (en) | 2016-07-04 | 2016-07-04 | A kind of Worm-gear type drillstring in horizontal section is sent into instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524525.4A CN106168118B (en) | 2016-07-04 | 2016-07-04 | A kind of Worm-gear type drillstring in horizontal section is sent into instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106168118A CN106168118A (en) | 2016-11-30 |
| CN106168118B true CN106168118B (en) | 2018-02-09 |
Family
ID=58065549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610524525.4A Expired - Fee Related CN106168118B (en) | 2016-07-04 | 2016-07-04 | A kind of Worm-gear type drillstring in horizontal section is sent into instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106168118B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894755B (en) * | 2017-05-08 | 2019-01-01 | 西南石油大学 | A kind of waterpower pulse formula is spun helicoid hydraulic motor |
| CN108104744B (en) * | 2017-12-22 | 2019-11-29 | 西华大学 | A kind of reciprocating wellbore dredging tool |
| CN112377127A (en) * | 2020-11-30 | 2021-02-19 | 西华大学 | Drilling tool with well cleaning function |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2215139C1 (en) * | 2002-05-20 | 2003-10-27 | Закрытое акционерное общество Научно-производственная фирма "Самарские Горизонты" | Generator-multiplier for supply of bottomhole telemetering system |
| US20060131079A1 (en) * | 2004-12-16 | 2006-06-22 | Halliburton Energy Services, Inc. | Composite motor stator |
| CN200943442Y (en) * | 2006-08-26 | 2007-09-05 | 德州联合石油机械有限公司 | Helicoid drill for saturated salt-water-resistant drilling well |
| CN102425382B (en) * | 2011-09-22 | 2014-06-25 | 中国石油大学(北京) | Dynamic pressure lubrication drilling tool and drilling tool assembly with same |
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2016
- 2016-07-04 CN CN201610524525.4A patent/CN106168118B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106168118A (en) | 2016-11-30 |
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