CN207131351U - Bha - Google Patents
Bha Download PDFInfo
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- CN207131351U CN207131351U CN201721169343.6U CN201721169343U CN207131351U CN 207131351 U CN207131351 U CN 207131351U CN 201721169343 U CN201721169343 U CN 201721169343U CN 207131351 U CN207131351 U CN 207131351U
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- Prior art keywords
- diameter
- drill collar
- drill
- stabilizer
- bha
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Abstract
The utility model discloses a kind of BHA, including：Drill bit；The first drill collar being connected with the upper end of the drill bit, first drill collar have the first diameter；The second drill collar being connected with the upper end of first drill collar, second drill collar have Second bobbin diameter, and the Second bobbin diameter is less than first diameter；The stabilizer being connected with the upper end of second drill collar, the stabilizer have the 3rd diameter, and the 3rd diameter is more than first diameter；The 3rd drill collar being connected with the upper end of the stabilizer, the 3rd drill collar have the 4th diameter, and the Second bobbin diameter is less than the 4th diameter, and the weight of the 3rd drill collar is more than the weight of second drill collar.BHA provided by the utility model, bar thick stick principle can be utilized the pressure of the drill is produced drop angle power, so as to prevent the BHA of well deflection.
Description
Technical field
Drilling engineering technical field is the utility model is related to, more particularly to a kind of BHA.
Background technology
Drilling well is the basic means of the subterranean resource exploration and development such as petroleum gas.Wherein, straight well deviation control with drilling straight well is drilling well
One of live technical barrier through being commonly encountered.When beating straight well, if hole deviation is excessive, well can be made to deviate subterranean designation target,
Upset the layout of oil-gas field development.In inclined shaft, drill string easily leans against borehole wall side, and drill string occurs seriously to rub with the borehole wall during rotation
Wipe, easily make drill string wear and fracture, in some instances it may even be possible to cause the accidents such as cave-in and key-seating sticking.Can also in addition, hole deviation is exceeded
Influence cementing quality.Can also be directly affected when hole deviation is excessive underground separate zone production, water filling work be normally carried out.Producing
When, pumpingh well also often causes the abrasion of oil pipe and sucker rod because hole deviation is excessive and fractureed.In summary, hole deviation is exceeded to oil gas field
Exploration and development have very big harm, drilling phase be necessary control hole deviation size, prevent that its is exceeded.
And current used drilling tool, mainly include：Pendulum assembly, tower drilling tool, packed hole assembly, off-axis drilling tool etc., on
Drilling tool is stated mainly by drill string gravity (G) in itself to produce drop angle power.However, in hole angle (Q) very little (such as Q 3 degree with
It is interior), because drop angle power is the component G*sin (Q) of G in vertical direction, so general very little, can not expire in some block drilling wells
The anti-oblique requirement of foot.
Therefore, it is necessary to provide a kind of new BHA, drawbacks described above of the prior art can be overcome.
Utility model content
The purpose of this utility model is to provide a kind of BHA, bar thick stick principle can be utilized the pressure of the drill is produced drop angle power,
So as to prevent the BHA of well deflection.
Above-mentioned purpose of the present utility model can be realized using following technical proposal：
A kind of BHA, including：
Drill bit；
The first drill collar being connected with the upper end of the drill bit, first drill collar have the first diameter；
The second drill collar being connected with the upper end of first drill collar, second drill collar have a Second bobbin diameter, and described second
Diameter is less than first diameter；
The stabilizer being connected with the upper end of second drill collar, the stabilizer have the 3rd diameter, the 3rd diameter
More than first diameter；
The 3rd drill collar being connected with the upper end of the stabilizer, the 3rd drill collar have the 4th diameter, and described second is straight
Footpath is less than the 4th diameter, and the weight of the 3rd drill collar is more than the weight of second drill collar.
In one preferred embodiment, the stabilizer is concentric stabilizer or eccentric stabilizer.
In one preferred embodiment, silk is passed through between the drill bit, the first drill collar, the second drill collar and the 3rd drill collar
Button connection.
The characteristics of the utility model and advantage are：The BHA provided in the application embodiment, by by drill bit, straight
The first larger drill collar of footpath, less second drill collar of diameter, stabilizer, another section of the 3rd drill collar being relatively large in diameter are connected to one
Rise, bar thick stick principle can be utilized the pressure of the drill is produced drop angle power, so as to prevent well deflection.Specifically, work as well in drilling process
When eye glances off, the 3rd drill collar being relatively large in diameter on stabilizer top presses to the lower borehole wall under gravity, and stabilizer is made
For the strong point, using bar thick stick principle, the weight of stabilizer bottom and all less second drill collar turn up of diameter can be inclined to
The borehole wall, so as to make the pressure of the drill produce a downward drop angle force component.Because the numerical value of the pressure of the drill is all very big, caused by this pressure of the drill
The numerical value of drop angle force component can be more much larger than the vertical component value of drill collar weight itself, under so big drop angle power effect, just
Hole deviation can be entangled, it is therefore prevented that the further change of hole deviation is big, and then can preferably solve in the prior art mainly by brill
The gravity of post in itself is insurmountable to produce drop angle power：In hole angle very little, can not meet to prevent in some block drilling wells
The technical problem of oblique requirement.
With reference to following explanation and accompanying drawing, the particular implementation of the application is disclose in detail, specifies the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, presently filed embodiment includes many changes, modifications and is 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
Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Fig. 1 is a kind of structural representation of BHA in the application embodiment；
Fig. 2 is the principle schematic that a kind of BHA realizes drop angle in the application embodiment.
Description of reference numerals：
Drill bit -1；First drill collar -2；Second drill collar -3；Stabilizer -4；3rd drill collar -5.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is elaborated, it should be understood that
These embodiments are merely to illustrate the utility model rather than limitation the scope of the utility model, new having read this practicality
After type, modification of the those skilled in the art to the various equivalent form of values of the present utility model each falls within the application appended claims
In limited range.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " on ",
" under ", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
The utility model provides a kind of BHA, bar thick stick principle can be utilized the pressure of the drill is produced drop angle power, so as to prevent
The BHA of well deflection.
Fig. 1 to Fig. 2 is referred to, a kind of BHA provided in the application embodiment can include：Drill bit 1；With institute
The first drill collar 2 of the upper end connection of drill bit 1 is stated, first drill collar 2 has the first diameter；With the upper end of first drill collar 2
Second drill collar 3 of connection, second drill collar 3 have Second bobbin diameter, and the Second bobbin diameter is less than first diameter；With it is described
The stabilizer 4 of the upper end connection of second drill collar 3, the stabilizer 4 have the 3rd diameter, and the 3rd diameter is more than described first
Diameter；The 3rd drill collar 5 being connected with the upper end of the stabilizer 4, the 3rd drill collar 5 have the 4th diameter, and described second is straight
Footpath is less than the 4th diameter, and the weight of the 3rd drill collar 5 is more than the weight of second drill collar 3.
In the present embodiment, BHA is a kind of by by drill bit 1, the drill collar being relatively large in diameter, the less brill of diameter
Quickly, stabilizer 4, another section of drill collar being relatively large in diameter link together, and bar thick stick principle can be utilized the pressure of the drill is produced drop angle power, from
And prevent the BHA of well deflection.
Specifically, the bottom of the BHA is provided with the drill bit 1 for broken rock, diameter is connected with the top of drill bit 1
The first relatively large drill collar 2.Specifically, first drill collar 2 can be in integrally cylindrical type, outside its a diameter of device cylindrical type
Outline diameter.First diameter of first drill collar 2 can specifically determine according to combined factors such as borehole size sizes, specifically
The application does not make specific limit herein.The top of the drill bit 1 can be provided with screw thread, the top of first drill collar 2
Screw thread is both provided with bottom.The top of the drill bit 1 and the bottom of the first drill collar 2 are connected by way of screw thread (screw thread) connection
Connect.
The second relatively small drill collar 3 of diameter is connected with the top of first drill collar 2.Specifically, second drill collar 3
Can also be in integrally cylindrical type, the outline diameter of its a diameter of device cylindrical type.The Second bobbin diameter of second drill collar 3 specifically may be used
To be determined according to combined factors such as borehole size size, the sizes of the first diameter, specific the application does not make specific herein
Limit.Need to ensure is that the Second bobbin diameter of second drill collar 3 is less than first diameter so that second drill collar 3
Weight is smaller, and is easier to flexural deformation.The upper and lower part of first drill collar 2 can be provided with screw thread, pass through screwed connection
Mode be connected respectively with the drill collar 3 of drill bit 1 and second.
Stabilizer 4 can be connected with the top of second drill collar 3.Stabilizer 4 is also known as centralizer, is to stablize underground brill
Tool, plays anti-oblique instrument.During revolution at a high speed, elongate drill rod is kept to put down in hole specifically, the stabilizer 4 is drill string
Steady operating, makes a kind of utensil of the axis of drill bit 1 as close possible to drill center line.When stabilizer 4 works, mainly mitigate drilling rod
Radial and axial high vibration of the post elastic system in hole；Reduce drill bit 1 and drilling rod eccentric wear；Ensure quality of coring；Prevent
Hole deviation or manually directional drilling.
The form of the stabilizer 4 can be concentric stabilizer 4, or eccentric stabilizer 4, specific the application exist
This is not limited specifically.When the stabilizer 4 is concentric stabilizer 4, the center of the stabilizer 4 and the center of drilling tool
Coaxial, the concentric stabilizer 4 can increase cross-brace ability.
In the present embodiment, the stabilizer 4 is overall in revolution build, a diameter of 3rd diameter of its outline.Tool
Body, the 3rd diameter can determine according to combined factors such as borehole size size, the sizes of Second bobbin diameter, and the application is herein not
Make specific limit.On the whole, it is necessary to ensure that the 3rd diameter is more than the Second bobbin diameter of second drill collar 3.
The 3rd relatively large drill collar 5 of diameter is connected with the top of the stabilizer 4.Specifically, the 3rd drill collar 5 can
With it is overall be in cylindrical type, the outline diameter of its a diameter of device cylindrical type.4th diameter of the 3rd drill collar 5 specifically can root
Determined according to borehole size size, the combined factors such as Second bobbin diameter of the second drill collar 3, specific the application does not make specific herein
Limit.Need to ensure is that the 4th diameter of the 3rd drill collar 5 is more than the Second bobbin diameter of second drill collar 3.Wherein, it is described
4th diameter can be identical with first diameter, can also be different, specifically, the application does not make specific limit herein.
The screw thread of connection can be provided with the upper and lower part of the 3rd drill collar 5.The weight of 3rd drill collar 5 is more than described
The weight of second drill collar 3.When well glances off, the 3rd drill collar 5 being relatively large in diameter on the top of stabilizer 4 is under gravity
The lower borehole wall is pressed to, using stabilizer 4 as the strong point, using bar thick stick principle, the diameter of the bottom of stabilizer 4 less second can be bored
Quickly 3 turn ups come, so that the pressure of the drill produces drop angle power, it is therefore prevented that the deflection of hole deviation.
Specifically, as shown in Fig. 2 in drilling process when well glances off, the top of stabilizer 4 is relatively large in diameter
3rd drill collar 5 presses to the lower borehole wall under gravity,, can be by stabilizer 4 using bar thick stick principle using stabilizer 4 as the strong point
The weight and diameter of the bottom all less turn up of second drill collar 3 is inclined to the upper borehole wall, so as to make the pressure of the drill produce one it is downward
Drop angle force component.Because the numerical value of the pressure of the drill is all very big, the numerical value of drop angle force component caused by this pressure of the drill can weigh in itself than drill collar
The vertical component value of amount is much larger, under so big drop angle power effect, it is possible to entangle by hole deviation, it is therefore prevented that hole deviation is entered
One step becomes big.
As fully visible, the application embodiment provide BHA by by drill bit 1, the first drill collar 2 being relatively large in diameter,
Less second drill collar 3 of diameter, stabilizer 4, another section of the 3rd drill collar 5 being relatively large in diameter link together, and can utilize bar thick stick
Principle make the pressure of the drill produce drop angle power, so as to prevent well deflection, can preferably solve in the prior art mainly by drill string in itself
Gravity it is insurmountable to produce drop angle power, in hole angle very little, can not meet in some block drilling wells it is anti-oblique will
The technical problem asked.
All articles and reference disclosed herein, including patent application and publication, for various purposes by helping
Draw and be hereby incorporated by.Describe the term " substantially by ... forms " of combination should include determined by element, composition, part or step with
And other elements, composition, part or step essentially without the basic novel feature for influenceing the combination.Use term "comprising"
Or " comprising " describes the combination of element here, composition, part or step it is also contemplated that substantially by these elements, composition, portion
The embodiment that part or step are formed.Here by using term " can with ", it is intended to which illustrate that " can with " includes described appoints
What attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part
Or step.
Above-mentioned each embodiment in this specification is described by the way of progressive, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment stressed is and other embodiment difference.
Several embodiments of the present utility model are the foregoing is only, although the embodiment disclosed by the utility model is such as
On, but the content is only to facilitate the embodiment for understanding the utility model and using, it is new to be not intended to limit this practicality
Type.Any the utility model person of ordinary skill in the field, the spirit and scope disclosed by the utility model are not being departed from
On the premise of, any modification and change, but patent of the present utility model can be made in the formal and details of embodiment
Protection domain, it must be still defined by the scope that appended claims are defined.
Claims (3)
- A kind of 1. BHA, it is characterised in that including：Drill bit；The first drill collar being connected with the upper end of the drill bit, first drill collar have the first diameter；The second drill collar being connected with the upper end of first drill collar, second drill collar have Second bobbin diameter, the Second bobbin diameter Less than first diameter；The stabilizer being connected with the upper end of second drill collar, the stabilizer have the 3rd diameter, and the 3rd diameter is more than First diameter；The 3rd drill collar being connected with the upper end of the stabilizer, the 3rd drill collar have the 4th diameter, and the Second bobbin diameter is small In the 4th diameter, the weight of the 3rd drill collar is more than the weight of second drill collar.
- 2. BHA as claimed in claim 1, it is characterised in that the stabilizer is concentric stabilizer or eccentric stabilization Device.
- 3. BHA as claimed in claim 1, it is characterised in that the drill bit, the first drill collar, the second drill collar and the 3rd bore Pass through screwed connection between quickly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169343.6U CN207131351U (en) | 2017-09-13 | 2017-09-13 | Bha |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721169343.6U CN207131351U (en) | 2017-09-13 | 2017-09-13 | Bha |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131351U true CN207131351U (en) | 2018-03-23 |
Family
ID=61638481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721169343.6U Expired - Fee Related CN207131351U (en) | 2017-09-13 | 2017-09-13 | Bha |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131351U (en) |
-
2017
- 2017-09-13 CN CN201721169343.6U patent/CN207131351U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 Termination date: 20180913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |