CN205936420U - Inclined to one side abrasionproof tubular column is prevented to directional well - Google Patents
Inclined to one side abrasionproof tubular column is prevented to directional well Download PDFInfo
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- CN205936420U CN205936420U CN201620831169.6U CN201620831169U CN205936420U CN 205936420 U CN205936420 U CN 205936420U CN 201620831169 U CN201620831169 U CN 201620831169U CN 205936420 U CN205936420 U CN 205936420U
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Abstract
The utility model provides an inclined to one side abrasionproof tubular column is prevented to directional well includes to lie in directional well well head outer polished rod, well head sleeve pipe and set up in the intraductal oil pipe of cover at least, be provided with hollow sucker rod self -lubricating tubular column in the oil pipe, hollow sucker rod self -lubricating tubular column is connected gradually by an oil pipe, hollow sucker rod and oil -well pump to be constituteed, it extends to the well head and outer and connect on the polished rod to go out oil pipe, hollow sucker rod is last to be provided with a set of sucker rod at least and to wear -resistant vicely. The utility model discloses a hollow sucker rod self -lubricating tubular column and the sucker rod eccentric wear prevention technique that sub phase combines of wear -resistanting is separated oil well output liquid and emollient effectively, soaks whole rod string in emollient completely to increase the sucker rod and wear -resistant vicely below the kickoff point (KOP), make the friction factor between hollow sucker rod and the oil pipe reduce by a wide margin, thereby reduce the inclined to one side mill phenomenon between the oil pipe, further prolong oil well pump inspection period.
Description
Technical field：
This utility model is related to oil field development field, particularly to a kind of directional well anti-bias abrasionproof tubing string.
Technical background：
Sucker rod pumping is a kind of main artificial lift mode, in sucker-rod pumping system, whether straight well or
Directional well, R a T is all relative motion in contact, therefore, exists inevitably between sucker rod and oil pipe
Abrasion, particularly directional well, well track is complicated, and sucker rod is easily bent in oil pipe, through exploitation for many years, down-hole work
Condition, being continually changing of medium, lubrication state deteriorates, and causing oil pumping to produce and there is serious sucker rod partial wear, causing oil well operation,
Oil well repair free period is short, increased operating cost, and eccentric wear has become the important contradiction of restriction oil field development stable yields.
Conventional eccentric abrasion prevention technology is mainly had optimization rod string assemblage, is taken out using tubing anchor grappling oil pipe, application at present
Beam centralizer and rod rotor, above technology is applied at the scene and is achieved certain effect.But it is big, aqueous in hole angle
In the case of height, eccentric wear still accounts for significant proportion it is impossible to meet being actually needed of oil field production very well, rod and tube partial-wear remains impact
The subject matter that oil field produces.
Therefore, the problem in order to overcome existing eccentric abrasion prevention technology to exist, changes in the past in directional well sucker rod pumping system
The middle method relying on routine techniquess to alleviate rod and tube partial-wear, devises a kind of directional well anti-bias abrasionproof tubing string, using hollow rod
Produced liquid in oil well is come by eccentric abrasion prevention technology that self-lubricating and anti-wear pair for sucker rods combine effectively with lubricant separation, will
Whole rod string is completely soaked in the lubricant, and increases anti-wear pair for sucker rods below kickoff point (KOP), make hollow rod with
Friction factor between oil pipe is greatly lowered, thus substantially reducing the eccentric wear phenomenon between oil pipe, extends oil well inspection further
The pump cycle.
Content of the invention：
The purpose of this utility model is the problem overcoming existing eccentric abrasion prevention technology to exist, and changes in the past in directional well sucker rod pump
Rely on routine techniquess to alleviate the method for rod and tube partial-wear it is proposed that a kind of directional well anti-bias abrasionproof tubing string in oil extraction system, at least wrap
Include the polished rod positioned at directional well outer wellhead, the sleeve pipe in well head and be arranged at oil pipe in sleeve pipe, be provided with described oil pipe
Hollow rod self-lubricating string, described hollow rod self-lubricating string is by flowline, hollow rod and oil well pump successively
Connect composition, described flowline extends to outer wellhead and be connected on polished rod, on described hollow rod at least provided with
One group of anti-wear pair for sucker rods.
Described anti-wear pair for sucker rods by wear-resistant polished rod, be socketed on wear-resistant polished rod wear-resistant righting sliding sleeve and be respectively arranged at
The upper box cupling of wear-resistant polished rod upper/lower terminal and lower box cupling composition.
Described wear-resistant polished rod is connected with hollow rod with lower box cupling by upper box cupling.
Described wear-resistant righting sliding sleeve adopts nylon base material, and fills high abrasion fiber, and is lined with zirconia ceramicss ring.
Described anti-wear pair for sucker rods total length is 4～8m.
Described wear-resistant polished rod be major diameter, the steel pole of high intensity, its a diameter of 29～38mm, intensity be 965～
1195MPa.
Form the annular space of sealing, filling in the annular space of described sealing between described oil pipe and hollow rod
Crude oil.
The beneficial effects of the utility model：
The eccentric abrasion prevention technology that this utility model is combined using hollow rod self-lubricating string and anti-wear pair for sucker rods, has
Produced liquid in oil well is come by effect ground with lubricant separation, and whole rod string is completely soaked in the lubricant, and in kickoff point (KOP)
Hereinafter increasing anti-wear pair for sucker rods, so that the friction factor between hollow rod and oil pipe is greatly lowered, thus substantially reducing
Eccentric wear phenomenon between oil pipe, further Extended Pump Detection Period, reduces workover cost.
Brief description：
Fig. 1 is structural representation of the present utility model.
Fig. 2 is anti-wear pair for sucker rods structural representation.
In figure, 1- polished rod, 2- flowline, 3- sleeve pipe, 4- oil pipe, 5- hollow rod, 6- anti-wear pair for sucker rods, 6.1- resists
Ground rods, 6.2- wear-resistant righting sliding sleeve, the upper box cupling of 6.3-, box cupling under 6.4-, 7- oil well pump.
Specific embodiment：
It is below to combine accompanying drawing to further illustrate to of the present utility model.
Embodiment 1：
As described in Figure 1, this utility model provides a kind of directional well anti-bias abrasionproof tubing string, at least includes positioned at Directional Well
Polished rod 1 outside mouthful, the sleeve pipe 3 in well head and be arranged at oil pipe 4 in sleeve pipe 3, are provided with hollow rod in described oil pipe 4
Self-lubricating string, described hollow rod self-lubricating string is sequentially connected group by flowline 2, hollow rod 5 and oil well pump 7
Become, described flowline 2 extends to outer wellhead and is connected on polished rod 1, at least provided with one group on described hollow rod 5
Anti-wear pair for sucker rods 6, anti-wear pair for sucker rods 6 is arranged on below kickoff point (KOP) in well.
In sleeve pipe 3, oil well pump 7 is connected by oil pipe 4, in oil pipe 4, oil well pump 7 is connected by hollow rod 5
Plunger.When plunger is descending, well liquid enter pump top, when plunger is up, liquid enters hollow rod by oil outlet, by with sky
The flowline that core bar is connected is discharged to ground, completes a cycle of operation, the annular space between hollow rod 5 and oil pipe 4
Sealed by technological means, and filled crude oil in the space that this seals, make to locate all the time between hollow rod and oil pipe
In good lubrication state.
The eccentric abrasion prevention technology that this utility model is combined using hollow rod self-lubricating string and anti-wear pair for sucker rods, has
Produced liquid in oil well is come by effect ground with lubricant separation, and whole rod string is completely soaked in the lubricant, and in kickoff point (KOP)
Hereinafter increasing anti-wear pair for sucker rods, so that the friction factor between hollow rod and oil pipe is greatly lowered, thus substantially reducing
Eccentric wear phenomenon between oil pipe, further Extended Pump Detection Period, reduces workover cost.
Embodiment 2：
On the basis of embodiment 1, as shown in Fig. 2 described anti-wear pair for sucker rods 6 by wear-resistant polished rod 6.1, be socketed on anti-
Wear-resistant righting sliding sleeve 6.2 and be respectively arranged at the upper box cupling 6.3 of wear-resistant polished rod 6.1 upper/lower terminal and lower box cupling in ground rods 6.1
6.4 composition.Described anti-wear pair for sucker rods 6 total length is about 4～8m.Described wear-resistant polished rod 6.1 by upper box cupling 6.3 and under connect
Hoop is connected with hollow rod 5, and wear-resistant righting sliding sleeve 6.2 is relatively fixed with hollow rod self-lubricating string (can be according to eccentric wear
Point moves freely), make the friction between hollow rod 5 and oil pipe 4 be changed into wear-resistant polished rod 6.1 and wear-resistant righting sliding sleeve 6.2
Between friction, reach and prevent hollow rod 5 from directly denuding with oil pipe 4.
Described wear-resistant righting sliding sleeve 6.2 adopts nylon base material, and fills high abrasion fiber, and is lined with zirconia ceramicss
Ring, acid and alkali-resistance, wear-resistant, so that the friction and wear between hollow rod and oil pipe is changed into wear-resistant polished rod and wear-resistant helps
Friction and wear between positive sliding sleeve, is reached and prevents hollow rod from directly being denuded with oil pipe；Described wear-resistant polished rod 6.1 is big
Diameter, the steel pole of high intensity, a diameter of 29～38mm of wear-resistant polished rod 6.1, intensity are 965～1195MPa, surface is polished,
Between chromium plating etc. is processed, coefficient of friction has obtained very big reduction.
Embodiment 3：
On the basis of embodiment 1, form the annular space of sealing between described oil pipe 4 and hollow rod 5, described
Filling crude oil in the annular space of sealing.
Crude oil belongs to lubricant medium, can mitigate the metal friction between rod tube, thus reducing abrasion；Crude oil is non-conductive, energy
Electrochemical corrosion between suppression rod tube；Produced Liquid can not enter the annular space between closed oil pipe 4 and hollow rod 5, bar
The erosion of the load fluid that pipe will not be produced；At hole deviation position, anti-wear pair for sucker rods 6 is installed simultaneously, mill can be reduced further
Damage.
Claims (7)
1. the anti-bias abrasionproof tubing string of a kind of directional well, at least includes polished rod (1) positioned at directional well outer wellhead, the sleeve pipe in well head
(3) and be arranged at oil pipe (4) in sleeve pipe (3) it is characterised in that：It is provided with hollow rod from profit in described oil pipe (4)
Slip pipe post, described hollow rod self-lubricating string is sequentially connected successively by flowline (2), hollow rod (5) and oil well pump (7)
Connect composition, described flowline (2) extends to outer wellhead and is connected on polished rod (1), on described hollow rod (5) at least
It is provided with one group of anti-wear pair for sucker rods (6).
2. a kind of anti-bias abrasionproof tubing string of directional well according to claim 1 it is characterised in that：Described anti-wear pair for sucker rods
(6) by wear-resistant polished rod (6.1), it is socketed on the upper wear-resistant righting sliding sleeve (6.2) of wear-resistant polished rod (6.1) and is respectively arranged at wear-resistant polished rod
(6.1) the upper box cupling (6.3) of upper/lower terminal and lower box cupling (6.4) composition.
3. a kind of anti-bias abrasionproof tubing string of directional well according to claim 2 it is characterised in that：Described wear-resistant polished rod
(6.1) it is connected with hollow rod (5) with lower box cupling by upper box cupling (6.3).
4. a kind of anti-bias abrasionproof tubing string of directional well according to claim 2 it is characterised in that：Described wear-resistant righting sliding sleeve
(6.2) adopt nylon base material, and fill high abrasion fiber, and be lined with zirconia ceramicss ring.
5. a kind of anti-bias abrasionproof tubing string of directional well according to claim 1 it is characterised in that：Described anti-wear pair for sucker rods
(6) total length is 4～8m.
6. a kind of anti-bias abrasionproof tubing string of directional well according to claim 2 it is characterised in that：Described wear-resistant polished rod
(6.1) it is major diameter, the steel pole of high intensity, its a diameter of 29～38mm, intensity are 965～1195MPa.
7. a kind of anti-bias abrasionproof tubing string of directional well according to claim 1 it is characterised in that：Described oil pipe (4) and sky
Form the annular space of sealing, filling crude oil in the annular space of described sealing between heart sucker rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831169.6U CN205936420U (en) | 2016-08-03 | 2016-08-03 | Inclined to one side abrasionproof tubular column is prevented to directional well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620831169.6U CN205936420U (en) | 2016-08-03 | 2016-08-03 | Inclined to one side abrasionproof tubular column is prevented to directional well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936420U true CN205936420U (en) | 2017-02-08 |
Family
ID=57924307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620831169.6U Active CN205936420U (en) | 2016-08-03 | 2016-08-03 | Inclined to one side abrasionproof tubular column is prevented to directional well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936420U (en) |
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2016
- 2016-08-03 CN CN201620831169.6U patent/CN205936420U/en active Active
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