CN106761401B - Horizontal well drilling tool - Google Patents
Horizontal well drilling tool Download PDFInfo
- Publication number
- CN106761401B CN106761401B CN201611013316.XA CN201611013316A CN106761401B CN 106761401 B CN106761401 B CN 106761401B CN 201611013316 A CN201611013316 A CN 201611013316A CN 106761401 B CN106761401 B CN 106761401B
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- ball
- horizontal well
- socket
- bulb
- pin
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- 238000005553 drilling Methods 0.000 title claims abstract description 78
- 210000002445 nipple Anatomy 0.000 claims description 41
- 238000007789 sealing Methods 0.000 claims description 6
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000004615 ingredient Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- 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
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)
- Earth Drilling (AREA)
Abstract
The application discloses horizontal well drilling tool includes: the drill pipe joint comprises a first drill pipe joint, a second drill pipe joint and a plurality of drill pipe short sections which are connected end to end and are positioned between the first drill pipe joint and the second drill pipe joint; the drill pipe sub comprises: the ball head mechanism extends lengthways, and a first connecting part is arranged on the side wall of the ball head mechanism; a ball head is arranged at one end of the ball head mechanism, and a plurality of track grooves which are distributed at intervals along the circumferential direction of the ball head are arranged on the side wall of the ball head; the ball socket mechanism is movably connected with the ball head mechanism; the ball socket mechanism is provided with a spherical cavity for accommodating the ball head; a plurality of pin holes which are in one-to-one correspondence with the track grooves are formed in the wall of the spherical cavity; a pin partially extending into the track groove is arranged in the pin hole; the pin is in contact with the inner wall of the track groove; the ball socket mechanism is provided with a second connecting part which can be matched with the first connecting part.
Description
Technical field
This application involves field of petroleum exploitation more particularly to a kind of horizontal well drilling tools.
Background technique
In the oil industry, exploiting the ultra-short radius SIDETRACKING TECHNOLOGY of multiple series of strata simultaneously in same well is oil exploitation
Into modern one of Main Yield-increasing means.
It is divided into major radius well, middle radius well, short radius well and ultra-short radius according to the different radially horizontal wells of radius of curvature
Well.It is major radius well that radius of curvature, which is greater than 500 meters, and radius of curvature is at 100 meters to 500 meter Wei Zhong radius wells, and radius of curvature is 20
It is short radius well to 100 meters, radius of curvature is ultra-short radius well less than 20 meters.The shorter well of radius of curvature is more difficult to spud in, right
The requirement of drilling tool is also higher.
In the prior art, drilling tool is broadly divided into liquid jet instrument and flexible drill string two major classes.
Company, the U.S. possesses a technology using high-pressure rotary jet rock-breaking drilling, provides technology in the world
Service support.The horizontal well borehole diameter being drilled to using this jet stream is smaller, and since the duct that hydro jet comes out is irregular,
The well so that it can not cement the well, duct are easy closure because support is lost.
Based on this jet stream ejector principle, Chinese invention patent ZL200920012340.0 discloses a kind of high pressure water
Jet stream sprays combination tool, including jet body and complete well auxiliary, jet body further include cutting other than spray head, high-voltage tube etc.
Flexible screen casing is stitched, which is mounted in the outside of high-voltage tube, after injection drilling depth to design well depth, drilling tool is above mentioned,
And slot flexibility screen casing and sand control sieve are retained in the wellbore sprayed and formed, and have been achieved in well.
But the slot of this slot flexibility screen casing is due to vertical with the drilling direction of wellbore, and slot is not often rule
Whole is arc-shaped, therefore the slot often scraping with borehole wall occurrence of large-area during going into the well, so as to cause the whole series combination
Tool can not be successfully advance.
A kind of soft pipe drilling tool is disclosed in Chinese invention patent ZL96249291.4, by elastic curved shell and its interior suit
Flexible drilling pipe constitute 90 ° of kick-off devices, the curved housing main body of elasticity is the hollow connection sheet of the concatenated fan-shaped ring of elastic steel bar；It is soft
The shell of property drilling pipe is by the Universal flexible hollow casing that is formed with the sequentially connected tubulose spherical surface connection ring of pin.90 ° of deflectings
Device is stretched after linearly G.I.H, drives the flexible drilling pipe rotation in kick-off device, delivers torque to drill bit, bore
Pressure is also passed to drill bit by the curved shell of elasticity, to realize drilling.
Since the curved casing of elasticity is in the outside of flexible drilling pipe, and the curved shell of elasticity is easy to happen bias, and sends out with the borehole wall
Raw collision, to avoid common eccentric phenomena in drilling process, the main inventive people of the patent is in its subsequent Chinese invention
Further progress is improved in patent ZL00258470.0, and flexible drill string is by the curved shell guide cylinder of tube-like elastic and has rolling bearing
Horizontal well drilling tool constitute.Lateral thrust of the lateral power of this device from follow-up guide pipe, elastic guide cylinder energy
Enough drill bit is promoted to turn to, and the outer wall of guide cylinder is equipped with multiple groups righting-oriented item and more anti-torsion limit films, it is ensured that it is entire
Guide cylinder can be bent by direction initialization；And flexible inside and outside spherical key is additionally provided on the inside of guide cylinder, on every group of spherical key
Ball alignment bearing is assembled, contacts horizontal well drilling tool directly with guide cylinder inner wall, may cause guide cylinder to reduce
The frictional force of offset.
This curved shell guide cylinder of elasticity is equipped with lateral slot, that is to say, that this guide cylinder is also that a kind of slot is soft
Property pipe, same have as previously described since there are caused defects for slot, while slot also destroys script hard material guiding
The intensity of cylinder itself.In addition, righting gib block is not only equally easy to generate friction between the borehole wall, but also its guidance capability is in reality
It is also under suspicion in the application process of border, therefore this kind of flexible drill string can not really be approved by drilling well industry.
In addition, the drilling tool of previous drilling need to be hung out, be connected again after horizontal well drilling tool completes deflecting by this structure
Common drilling rod is gone into the well again continues horizontal drilling to inclination section, needs drilling well twice that could complete.
And then Chinese invention patent publication number CN1464170A also discloses a kind of drilling well, completion tool and its technique,
In guiding follow-up screen casing although not cutting seam sieve tube, be also that be linked together the other side in side by multistage laddertron disconnected
Open form is in 90 ° of deflectings, multistage laddertron forms bend pipe to the curving of disconnection.But it is not difficult to find that this form
Screen casing is still unavoidable from the scraping with the borehole wall, since multistage laddertron forms one section of rigid bend pipe upon bending, in drilling
The huge frictional resistance that can be generated between screen casing and the borehole wall for 90 ° of deflectings, which leads to this tool almost, to move ahead.
By the above background technique as it can be seen that existing super short radial horizontal well drilling tool has universal general character, just
It is to be arranged slot bend pipe on the outside of horizontal well drilling tool or high pressure spray tool, 90 ° of deflectings is carried out using slot bend pipe, in horizontal well
Drilling tool is proposed after the completion of drilling well, and slot bend pipe can also be retained in well and play the role of well cementation.
Summary of the invention
Technical problem to be solved by the present invention lies in providing a kind of horizontal well drilling tool of super short radius horizontal well, with
The horizontal well drilling tool for solving to be cased with slot bend pipe in the prior art can not be successfully the defect gone into the well, and can get ultra-short radius side
Horizontal well drilling.
In order to achieve the above objectives, the application provides a kind of horizontal well drilling tool, comprising: the first tool joint, the second drilling rod connecting
Head and the drill pipe nipple of multiple head and the tail connection between first tool joint and second tool joint；
The drill pipe nipple includes:
The bulb mechanism that lengthwise extends is provided with first connecting portion on the side wall of the bulb mechanism；The bulb mechanism
One end be provided with bulb, multiple track grooves along its circumferentially-spaced arrangement are provided on the side wall of the bulb；
The ball-and-socket mechanism being flexibly connected with the bulb mechanism；The ball-and-socket mechanism has the spherical cavity for accommodating the bulb
Body；The wall of the spherical cavity is equipped with the multiple and one-to-one pin hole of the track groove；Part is equipped in the pin hole to stretch
Enter the pin of the track groove；The pin is contacted with the inner wall of the track groove；The ball-and-socket mechanism offers can be with first
The second connecting portion that interconnecting piece matches.
As a preferred embodiment, the ball-and-socket mechanism includes shell, the first ball-and-socket；The shell is fixedly connected
The front end of first ball-and-socket, the front end of the shell and first ball-and-socket forms the spherical cavity；Before the shell
Holding has the first spherical structure on outer wall；First ball-and-socket is equipped with the second connecting portion；The rear end of first ball-and-socket is set
There is the second spherical structure matched with the first spherical structure.
As a preferred embodiment, first connecting portion is connected through a screw thread with the second connecting portion.
As a preferred embodiment, the first connecting portion includes external screw thread, the second connecting portion includes interior
Screw thread.
As a preferred embodiment, the track groove extends along the bulb mechanism extending direction arc, it is described
The bottom surface of track groove and track groove arc in the same direction extend；The shell is threadedly coupled with first ball-and-socket.
As a preferred embodiment, the pin hole is equipped with cover board, the lid far from one end of the spherical cavity
Plate prevents the pin from falling off from the pin hole.
As a preferred embodiment, the pin is spherical surface close to the end face of the bulb, the track groove
Bottom surface is plane.
As a preferred embodiment, the pin is between the end face of the bulb and the bottom surface of the track groove
Gap cooperation.
As a preferred embodiment, the track groove is uniformly distributed along the circumferential direction of the bulb.
As a preferred embodiment, being equipped with the pin in each pin hole；All pins
It is generally aligned in the same plane.
As a preferred embodiment, the quantity of the track groove is 4.
As a preferred embodiment, sealing ring is equipped between the pin and the wall of the spherical cavity, it is described
Sealing ring is located at the rear of the track groove.
As a preferred embodiment, the outer wall of first tool joint is equipped with drilling rod pin thread 11；Described first
Tool joint is equipped with second connecting portion；The first connecting portion phase of first tool joint and the bulb mechanism of the drill pipe nipple
Connection；The lower end of first tool joint is equipped with the second spherical structure.
As a preferred embodiment, one end of second tool joint has the second ball-and-socket and the shell,
The bulb mechanism is equipped between second tool joint and the drill pipe nipple；The rear end of second ball-and-socket is equipped with and institute
State the drilling rod female thread that drilling rod pin thread matches.
As a preferred embodiment, the maximum camber degree of the drill pipe nipple is 5 degree.
As a preferred embodiment, the length of the horizontal well drilling tool is 9 meters to 10 meters.
By above description as can be seen that the drill pipe nipple in the application horizontal well drilling tool passes through bulb mechanism and ball-and-socket machine
Structure cooperatively forms universal merism, so that itself can be bent, the bending that multiple drill pipe nipples are formed be overlapped from
And the drillng operation of ultra-short radius sidetrack horizontal well can be carried out.
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies original of the invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without any creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the Horizontal Well Drilling lamps structure schematic diagram that a kind of embodiment of the application provides；
Fig. 2 is sectional view at A-A in Fig. 1.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to guarantor of the present invention
The range of shield.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
Fig. 1 to Fig. 2 is please referred to, is a kind of horizontal well drilling tool that embodiment provides of the application, the horizontal well drilling tool application
But it is not limited to the drillng operation of ultra-short radius sidetrack horizontal well.In the present embodiment, the horizontal well drilling tool includes: the first brill
Knock-off joint 1, the second tool joint 2 and multiple between first tool joint 1 and second tool joint 2
The drill pipe nipple 100 of head and the tail connection.
Wherein, the drill pipe nipple 100 includes: the bulb mechanism 7 that lengthwise extends, and is set on the side wall of the bulb mechanism 7
It is equipped with first connecting portion；One end of the bulb mechanism 7 is provided with bulb, is provided on the side wall of the bulb multiple along its week
To the track groove being intervally arranged；The ball-and-socket mechanism being flexibly connected with the bulb mechanism 7；The ball-and-socket mechanism has described in receiving
The spherical cavity of bulb；The wall of the spherical cavity is equipped with the multiple and one-to-one pin hole of the track groove；The pin hole
It is interior to be equipped with the pin 4 for partially protruding into the track groove；The pin is contacted with the bottom surface of the track groove；The ball-and-socket mechanism opens
Equipped with the second connecting portion that can be matched with first connecting portion.
When multiple drill pipe nipples 100 join end to end to form horizontal well drilling tool, as shown in Figure 1, the ball of a drill pipe nipple 100
Head mechanism 7 by previous 100 rear end of drill pipe nipple protrudes into its ball-and-socket mechanism, make the first connecting portion of a drill pipe nipple 100 with it is previous
The second connecting portion of drill pipe nipple 100 cooperates, to be driven；Similarly, the drill pipe nipple 100 and latter drill pipe nipple
When 100 connection, the bulb mechanism 7 of latter drill pipe nipple 100 protrudes into its ball-and-socket mechanism by 100 rear end of drill pipe nipple, makes latter
The first connecting portion of drill pipe nipple 100 and the second connecting portion of the drill pipe nipple 100 cooperate, to be driven.
By above description as can be seen that drill pipe nipple 100 is universal by bulb mechanism 7 and cooperatively forming for ball-and-socket mechanism
Merism, so that itself can be bent, the bending that multiple drill pipe nipples 100 are formed is overlapped ultrashort so as to carry out
The drillng operation of radius sidetrack horizontal well.
By horizontal well drilling tool and the drill bit for using Universal active to connect with horizontal well drilling tool, a whole flexibility is formed
Chain, this flexible chain and traditional space bend pipe, the guide pipe including multiple laddertrons composition are different.Traditional space bend pipe is only
Approximate 900 bend pipes can be bent to a direction, and then no longer performance is flexible upon bending, but become one section of rigidity bend pipe,
Once the outer rim of the rigidity bend pipe on the inside of the borehole wall with rubbing, then rigidity bend pipe voluntarily can not inwardly arch upward at all and avoid hindering
Hinder.
The horizontal well drilling tool for reviewing present embodiment, due to passing through bulb mechanism 7 and ball between every section of drill pipe nipple 100
Nest mechanism carries out universal joint flexible connection, therefore when grazing occurs for any one section of drill pipe nipple 100 and the borehole wall, this section of drilling rod
Pipe nipple 100 can all carry out appropriately curved, to avoid obstacle, make rod bit downward driving that can advance freely.And for for solid
For the flexible sleeve of well, adjacent two sections of flexible sleeves are flexibly connected by hinged telescoping tube, also can guarantee flexible sleeve energy
It is successfully gone downwards to along drilling well and needs position.
It should be noted that it is reference that the front and rear direction in the application, which is with the first tool joint 1, leaned in two components
The component of nearly first tool joint 1 preceding, far from core bit 1 rear；For example, 1 to the second drilling rod connecting of the first tool joint
First 2 direction is direction from front to back.
Please continue to refer to Fig. 1,7 lengthwise of bulb mechanism extends, generally pipe structure.First connecting portion is arranged substantially in
The medium position of 7 length direction of bulb mechanism.(when with scope of readers to Fig. 1) bulb is located at the rear of first connecting portion.
The spherical cavity of ball-and-socket mechanism can accommodate bulb mechanism 7.Wherein, spherical cavity is to be arranged concentrically with bulb, with
Just bulb mechanism 7 can carry out universal swing, to form bending angle.The outer surface of bulb and the inner surface of spherical cavity paste
Splice grafting touching.
As shown in Figure 1 and Figure 2, the track groove 9 of outer wall setting of bulb and the bottom surface of track groove 9 are along the bulb machine
7 extending direction of structure (or as shown in Figure 1 from top to bottom or from the bottom to top) arc extends, track groove 9 and its bottom surface institute
Arcuately the contour line with bulb or spherical cavity matches.As shown in Fig. 2, 9 cross section of track groove is gap shape.By Fig. 2
The outer contour of contour line and bulb that shown cross section can be seen that the bottom surface of track groove 9 is concentric circles.
As shown in Fig. 2, pin hole is radially extended in the cross section, it can be round bar shape.Track is protruded into one end of pin hole
It is contacted in slot 9 and with the bottom surface of track groove 9.When bulb rotates in spherical cavity, pin 4 is slided relative to track groove, in cunning
During dynamic, pin 4 is contacted with the bottom surface of track groove 9 always, to guarantee bulb and spherical cavity to be arranged concentrically.Further
Ground, the pin hole are equipped with cover board 8 far from one end of the spherical cavity, and the cover board 8 prevents the pin 4 de- from the pin hole
It falls.Cover board 8 is by the plug at end part of pin hole.
Preferably, the pin 4 close to the end face of (or facing) described bulb (cross section i.e. as shown in Figure 2
Contour line is camber line) it is spherical surface, the bottom surface of the track groove 9 is plane (contour line of cross section i.e. as shown in Figure 2 is straight line).
It is arranged so that the structure of pin 4 and bulb is easily worked.Moreover, when pin 4 is moved along track groove 9, the end of pin 4
Face (arc surface) and the bottom surface of track groove 9 are always clearance fit, so that operating is more smooth；Meanwhile the two is clearance fit, it can
With effectively prevent because stress it is excessive caused by thorough stuck problem after 4 extrusion of pin.
Specifically, the ball-and-socket mechanism may include shell 3, the first ball-and-socket 5.The shell 3 is fixedly connected with described first
The front end of ball-and-socket 5, the front end of the shell 3 and first ball-and-socket 5 forms the spherical cavity.On the outer wall of the shell 3
With the first spherical structure.The rear end of the shell 3 connects first ball-and-socket 5；First ball-and-socket 5 is equipped with described second and connects
Socket part.The rear end of first ball-and-socket 5 is equipped with the second spherical structure matched with the first spherical structure.
Wherein, shell 3 and the first ball-and-socket 5 are as shown in Figure 1 nested structure or tubular structure, thus with bulb mechanism 7
The drill pipe nipple 100 of formation has center flow channels.Shell 3, the first ball-and-socket 5 are from top to bottom successively arranged as shown in Figure 1.Specifically
, the first ball-and-socket 5 can be an integral molding structure, so that Horizontal Well Drilling lamps structure provided by present embodiment is simple,
Convenient for manufacture, cost is saved.Shell 3 matches to form spherical cavity with the first ball-and-socket 5, and the inner wall of shell 3 extends radially through shape
At the pin hole.Limit is blocked by pin 4 and the first ball-and-socket 5 before and after ball-and-socket.As shown in Figure 1, the front end face of the first ball-and-socket 5 and interior
The step of wall middle section setting withstands ball-and-socket, and pin 4 is withstood in the front end of ball-and-socket, and pin 4 is located in pin hole can not move in front-rear direction
It is dynamic, so that ball-and-socket position be fixed.
As shown in Figure 1, shell 3 is connected on the outer wall of the first ball-and-socket 5, meanwhile, it is formed on the wall of the first ball-and-socket 5 for outer
The step of the rear end contact of shell 3.Second spherical structure is set to the rear end of the first ball-and-socket 5, is Internal Spherical Surface.First spherical structure is set
It is placed on the outer wall of shell 3, is spherical outside surface.First spherical structure fits with the second spherical structure and contacts, be bulb mechanism 7 with
Opposite swing between ball-and-socket mechanism carries out guiding auxiliary, meanwhile, avoid foul from entering the activity between the first ball-and-socket 5 and bulb
Spherical surface.
First ball-and-socket 5 is provided with second connecting portion, second connecting portion can for internal thread part and with (next drill pipe nipple
100) first connecting portion matches.Wherein, second connecting portion is located at the rear of spherical cavity.Bulb mechanism 7 and ball-and-socket mechanism
Cooperated by interconnecting piece, can produce the transmitting for keeping torque with respect to sliding, consequently facilitating two neighboring drill pipe nipple 100 it
Between generate bending.
Further, the shell 3 is threadedly coupled with first ball-and-socket 5.Circumferential direction of the track groove 9 along the bulb
It is uniformly distributed.The pin 4 is equipped in each track groove 9 and pin hole.All pins 4 are located at same flat
Face to both be able to satisfy the bending of drill pipe nipple 100, while can preferably transmit torque.The quantity of the track groove 9 is no less than
4.As shown in Fig. 2, the quantity of the track groove 9 is 4, the quantity of pin 4 is similarly 4, and the quantity of pin hole is similarly 4
It is a.
A variety of connection types can be formed between first connecting portion and second connecting portion, for example are threadedly coupled, welding, riveting
Etc., more preferably, first connecting portion is connected through a screw thread with the second connecting portion.Specifically, the first connecting portion
Including external screw thread, the second connecting portion includes internal screw thread.Sealing is equipped between the pin 4 and the wall of the spherical cavity
Circle, the sealing ring are located at the rear of the track groove 9.
In one embodiment, the first tool joint 1 is similarly with drill pipe nipple 100 is flexibly connected, the second drilling rod connecting
First 2 with drill pipe nipple 100 similarly to be flexibly connected.
Specifically, as shown in Figure 1, the outer wall of first tool joint 1 is equipped with drilling rod pin thread 11.First drilling rod connecting
First 1 is equipped with second connecting portion；First tool joint 1 is connected with the first connecting portion of the bulb mechanism of the drill pipe nipple
It connects；The lower end of first tool joint is equipped with the second spherical structure.Second spherical structure be located at the first (or last bit)
First spherical structure of the shell of the ball-and-socket mechanism of drill pipe nipple matches.
Further, as shown in Figure 1, one end of second tool joint 2 has the second ball-and-socket 9 and the shell 3, institute
It states and is equipped with the bulb mechanism 7 between the second tool joint 2 and the drill pipe nipple 100；The rear end of second ball-and-socket 9 is equipped with
The drilling rod female thread 21 to match with the drilling rod pin thread 11.
Drill pipe nipple 100 can be bent in the present embodiment, i.e., opposite pendulum is generated between ball-and-socket mechanism and bulb mechanism 7
It is dynamic.Preferably, the maximum camber degree of the drill pipe nipple 100 is 5 degree.So set, 5 1/2 " (5 cun half) Jing Zhongke with
Smoothly complete ultra-short radius sidetrack horizontal well or high angle hole drillng operation that deflecting radius is 1.5-2 meters.Specifically, the water
The length of horizontal well drilling tool can be 9 meters to 10 meters.
Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
58,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part of subject matter.
Claims (14)
1. a kind of horizontal well drilling tool characterized by comprising the first tool joint, the second tool joint and be located at described the
The drill pipe nipple of multiple head and the tail connection between one tool joint and second tool joint；
The drill pipe nipple includes:
The bulb mechanism that lengthwise extends is provided with first connecting portion on the side wall of the bulb mechanism；The one of the bulb mechanism
End is provided with bulb, and multiple track grooves along its circumferentially-spaced arrangement are provided on the side wall of the bulb；
The ball-and-socket mechanism being flexibly connected with the bulb mechanism；The ball-and-socket mechanism has the spherical cavity for accommodating the bulb；
The wall of the spherical cavity is equipped with the multiple and one-to-one pin hole of the track groove；It is equipped in the pin hole and partially protrudes into institute
State the pin of track groove；The pin is contacted with the inner wall of the track groove；The ball-and-socket mechanism, which offers, to be connect with first
The second connecting portion that portion matches；
The ball-and-socket mechanism includes shell, the first ball-and-socket；The shell is fixedly connected with first ball-and-socket, the front end of the shell
And the front end of first ball-and-socket forms the spherical cavity；There is the first spherical structure on the front end outer wall of the shell；Institute
The first ball-and-socket is stated equipped with the second connecting portion；The rear end of first ball-and-socket is equipped with second matched with the first spherical structure
Spherical structure；First connecting portion is connected through a screw thread with the second connecting portion.
2. horizontal well drilling tool as described in claim 1, it is characterised in that: the first connecting portion includes external screw thread, and described
Two interconnecting pieces include internal screw thread.
3. horizontal well drilling tool as described in claim 1, it is characterised in that: the track groove is along the bulb mechanism extending direction
Arc extends, and the bottom surface of the track groove and track groove arc in the same direction extend；The shell and the first ball-and-socket screw thread
Connection.
4. horizontal well drilling tool as described in claim 1, it is characterised in that: the pin hole is set far from one end of the spherical cavity
There is cover board, the cover board prevents the pin from falling off from the pin hole.
5. horizontal well drilling tool as described in claim 1, it is characterised in that: the pin is ball close to the end face of the bulb
Face, the bottom surface of the track groove are plane.
6. horizontal well drilling tool as described in claim 1, it is characterised in that: the pin close to the bulb end face with it is described
The bottom surface clearance fit of track groove.
7. horizontal well drilling tool as described in claim 1, it is characterised in that: the track groove is uniformly divided along the circumferential of the bulb
Cloth.
8. horizontal well drilling tool as described in claim 1, it is characterised in that: be equipped with the column in each pin hole
Pin；All pins are generally aligned in the same plane.
9. horizontal well drilling tool as claimed in claim 3, it is characterised in that: the quantity of the track groove is 4.
10. horizontal well drilling tool as described in claim 1, it is characterised in that: between the pin and the wall of the spherical cavity
Equipped with sealing ring, the sealing ring is located at the rear of the track groove.
11. horizontal well drilling tool as described in claim 1, it is characterised in that: the outer wall of first tool joint is equipped with drilling rod
Pin thread；First tool joint is equipped with second connecting portion；The bulb mechanism of first tool joint and the drill pipe nipple
First connecting portion be connected；The lower end of first tool joint is equipped with the second spherical structure.
12. horizontal well drilling tool as claimed in claim 11, it is characterised in that: one end of second tool joint has second
Ball-and-socket and the shell are equipped with the bulb mechanism between second tool joint and the drill pipe nipple；Second ball
The rear end of nest is equipped with the drilling rod female thread to match with the drilling rod pin thread.
13. horizontal well drilling tool as described in claim 1, it is characterised in that: the maximum camber degree of the drill pipe nipple is 5
Degree.
14. horizontal well drilling tool as described in claim 1, it is characterised in that: the length of the horizontal well drilling tool is 9 meters to 10
Rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611013316.XA CN106761401B (en) | 2016-11-15 | 2016-11-15 | Horizontal well drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611013316.XA CN106761401B (en) | 2016-11-15 | 2016-11-15 | Horizontal well drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761401A CN106761401A (en) | 2017-05-31 |
| CN106761401B true CN106761401B (en) | 2019-03-15 |
Family
ID=58968912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611013316.XA Active CN106761401B (en) | 2016-11-15 | 2016-11-15 | Horizontal well drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761401B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374414A (en) * | 2021-07-13 | 2021-09-10 | 湖北中广公路勘察设计有限公司 | Spline type horizontal directional drilling engineering geological exploration steering control device |
| CN115492538B (en) * | 2022-09-15 | 2024-07-05 | 西南石油大学 | Double-ball-head flexible drill rod for realizing small curvature radius |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2135055Y (en) * | 1992-05-27 | 1993-06-02 | 胜利石油管理局钻井总公司 | Guide power drilling tool with flexible hinge |
| CN201614888U (en) * | 2010-01-28 | 2010-10-27 | 大庆亨得利石油技术服务有限公司 | Horizontal well flexible drilling tool |
| CN202047748U (en) * | 2011-04-19 | 2011-11-23 | 北京百利时能源技术有限责任公司 | Ultra short radius horizontal well flexible drilling tool |
| CN102606073A (en) * | 2012-04-06 | 2012-07-25 | 西安石油大学 | Guide mechanism for directing rotary steering drilling tool |
| CN202578508U (en) * | 2012-04-06 | 2012-12-05 | 西安石油大学 | Guide mechanism of well drilling tool |
| CN105064919A (en) * | 2015-07-28 | 2015-11-18 | 大庆亨得利石油技术服务有限公司 | Ultra-short-radius radial lateral drilling method for horizontal wells |
-
2016
- 2016-11-15 CN CN201611013316.XA patent/CN106761401B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106761401A (en) | 2017-05-31 |
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