CN206830169U - A kind of casing collar locator (CCL) - Google Patents
A kind of casing collar locator (CCL) Download PDFInfo
- Publication number
- CN206830169U CN206830169U CN201720463422.1U CN201720463422U CN206830169U CN 206830169 U CN206830169 U CN 206830169U CN 201720463422 U CN201720463422 U CN 201720463422U CN 206830169 U CN206830169 U CN 206830169U
- Authority
- CN
- China
- Prior art keywords
- ccl
- collar locator
- casing collar
- locating piece
- inwall
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of casing collar locator (CCL), belongs to oil well instrument field.The casing collar locator (CCL) includes cylindrical body, and outer wall is circumferentially arranged multiple grooves.The casing collar locator (CCL) also includes：Upper bush, lower sleeve and multiple locating pieces.Wherein, upper bush and lower sleeve are sleeved on the outer wall of cylindrical body, and respectively above and below groove；The lower end with upper bush inwall, the upper end of lower sleeve inwall offset the upper and lower end of locating piece outer wall respectively, the upper end of locating piece be radially provided with upper surface tilt down, the acclivitous projection in lower surface；Upper and lower two elastic components are provided with each groove, one end of elastic component is connected with the inwall of locating piece, and the madial wall of the other end and groove offsets.The utility model casing collar locator (CCL) is easy for installation；Locating piece and two elastic components is more uniformly stressed, steadily, avoid influenceing the change of coiled tubing suspending weight, ensure that the locating effect to payzone.
Description
Technical field
Oil well instrument field is the utility model is related to, more particularly to a kind of casing collar locator (CCL).
Background technology
There are multiple payzones in most of oil-gas reservoirs, and big multilayered reservoir is thin interbed, in order to improve single well productivity and oil gas field
Ultimate recovery, fracture acidizing transformation must be carried out to each payzone after the completion of oil gas well drilling construction.Especially, thin interbed is entered
When row fracture acidizing is transformed, it is necessary to target payzone is positioned, by coiled tubing and coupled transformation instrument tripping in
Underground desired depth carries out operation.Therefore it provides a kind of instrument that can be positioned to payzone is very necessary.
Prior art provides a kind of casing collar locator (CCL), including cylindrical body, upper compressing member, lower compressing member, positioning
Slips and arc-shaped spring piece.Wherein, it is circumferentially arranged on the outer wall of cylindrical body to have multiple grooves；Upper compressing member and lower compressing member
It is each attached on the outer wall of cylindrical body, and respectively above and below groove；Position the upper and lower part difference of slips
It is fixed on the madial wall of compressing member and lower compressing member, projection is provided with the outer wall in the middle part of the positioning slips；Arc spring
Piece outward opening, is arranged in groove, and both ends offset with positioning the madial wall of slips respectively.Using when, by the locator with
The lower end of coiled tubing is connected, and (down-hole casing is to be connected by multiple short sleeves by multiple box cuplings in tripping in down-hole casing in the lump
Into), when near device tripping in be positioned to target payzone, coiled tubing is above carried, observation coiled tubing changes in the suspending weight of well head,
To complete casing coupling positioning.
Designer has found that prior art at least has problems with：
Conventionally, as spring leaf is arcuate structure, there was only single fulcrum in groove, coiled tubing is carried upper
During, when the top for positioning slips is compressed, bottom can produce the power expanded outwardly, and stationarity is poor, and it is fixed easily to cause
Position slips and arc-shaped spring piece discontinuity, influence suspending weight variation effect of the coiled tubing at well head, cause to payzone
Locating effect is poor.Further, since spring leaf is arcuate structure, outward opening when being placed in groove, and with being arranged on outside it
The connectionless relation of positioning slips in portion, when being installed to casing collar locator (CCL), arc-shaped spring piece is placed in groove
Easily shake, so as to cause casing collar locator (CCL) installation difficulty.
Utility model content
In order to solve the above-mentioned technical problem, the utility model embodiment provides a kind of casing collar locator (CCL).Specific skill
Art scheme is as follows：
A kind of casing collar locator (CCL), including cylindrical body, outer wall is circumferentially arranged multiple grooves, described sleeve pipe box cupling
Locator also includes：
Upper bush and lower sleeve, be sleeved on the outer wall of the cylindrical body, and respectively positioned at the groove top and
Lower section；
Multiple locating pieces, the upper and lower end of outer wall respectively the lower end with the upper bush inwall, the lower sleeve inwall it is upper
End offsets, the external wall of upper portion of the locating piece be radially provided with upper surface tilt down, lower surface it is acclivitous convex
Block；
Upper and lower two elastic components are provided with each groove, one end of the elastic component is interior with the locating piece
Wall is connected, and the madial wall of the other end and the groove offsets.
Specifically, preferably, the elastic component includes：Inner shrapnel, inclination shell fragment and the outer shell fragment being sequentially connected with；
The inner shrapnel is bonded with the madial wall of the groove, and respectively the top surface with the groove, have between bottom surface
Spacing；
The outer shell fragment is connected with the inwall of the locating piece.
Specifically, preferably, being vertically arranged with strip through-hole on the outer shell fragment；
The outer shell fragment is connected by bolt with the locating piece；
The width of the strip through-hole is less than the bolt head diameter of the bolt, and the screw rod of simultaneously greater than described bolt is straight
Footpath.
Specifically, preferably, the junction setting transition face in the arc-shaped for tilting shell fragment and the outer shell fragment.
Specifically, preferably, the locating piece includes：Body, the upper stopper for being arranged on the body upper and lower end and under
Block；
The projection is arranged in the external wall of upper portion of the body；
The upper stopper and the lower block are formed by vertical block body and oblique block body, and respectively with the upper bush
The lower end of wall and the upper end of the lower sleeve inwall offset.
Specifically, preferably, the lower end of the upper bush inwall and the upper end of the lower sleeve inwall are all provided with being set to loudspeaker
The inclined-plane of mouth shape；
The inclined-plane is adapted to the tiltedly block body and offseted.
Specifically, preferably, the upper surface of the projection and the angle of the cylindrical body center line are 55 ° -75 °；
The lower surface of the projection and the angle of the cylindrical body center line are 30 ° -50 °.
Specifically, preferably, the upper bush and the lower sleeve are threadedly coupled with the cylindrical body.
Specifically, preferably, after the upper bush, the lower sleeve be threadedly coupled with the cylindrical body, spiral shell is passed through
The upper bush and the lower sleeve are separately fixed on the cylindrical body by nail.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：
The casing collar locator (CCL) that the utility model embodiment provides, by the way that two elastic components are arranged in groove, and
Its is located at the upper and lower part of groove respectively, equivalent to two fulcrums that locating piece is formd in groove, make locating piece by
It is more steady after power.It is upper carry coiled tubing during, when the elastic component of top is compressed, the elastic component of lower section all the time by
The power of inside compression is arrived, the elastic component of top will not have an impact to the elastic component of lower section, make two elastic components and locating piece
It is more uniformly stressed, steadily, to avoid influenceing the change of coiled tubing suspending weight, and then ensure that the locating effect to payzone.This
Outside, by setting locating piece and elastic component, and both are connected, when being installed to casing collar locator (CCL), Ke Yitong
Cross locating piece elastic component is placed in groove, avoid elastic component and shaken in groove, pacify casing collar locator (CCL)
Dress is convenient.Also, by the way that projection to be arranged on to the top of locating piece, under the reset force after making the elastic component of top compressed is more than
Reset force after square elastic component is compressed, so as to add the upper lifting force to casing collar locator (CCL), makes coiled tubing suspending weight
Change it is more obvious, improve the positioning precision to payzone.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the diagrammatic cross-section for the casing collar locator (CCL) that the utility model embodiment provides；
Fig. 2 is the schematic cross-section for the locating piece that the utility model embodiment provides.
Reference represents respectively：
1 cylindrical body,
101 grooves,
2 upper bushes,
3 lower sleeves,
4 locating pieces,
401 projections,
402 bodies,
403 upper stoppers,
404 times blocks,
5 elastic components,
501 inner shrapnels,
502 tilt shell fragment,
503 outer shell fragments.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
It should be noted that the direction where well head is considered as top by the utility model embodiment, it is also cylindrical body 1
Upper end where direction；Direction where shaft bottom is considered as lower section, it is also direction where the lower end of cylindrical body 1；By sleeve pipe
The direction of collar locator radially inward is considered as the direction of inner side, and to the restriction of upper and lower, the interior side direction of following part
Also it is consistent with the above.
The utility model embodiment provides a kind of casing collar locator (CCL), as shown in Figure 1, the casing collar locator (CCL)
Including cylindrical body 1, outer wall is circumferentially arranged multiple grooves 101.In addition, the casing collar locator (CCL) also includes：Upper bush
2nd, lower sleeve 3 and multiple locating pieces 4.Wherein, upper bush 2 and lower sleeve 3 are sleeved on the outer wall of cylindrical body 1, and position respectively
Above and below groove 101；The upper and lower end of the outer wall of locating piece 4 lower end with the inwall of upper bush 2, the inwall of lower sleeve 3 respectively
Upper end offset, the upper end of locating piece 4 be radially provided with upper surface tilt down, the acclivitous projection in lower surface
401 (referring to accompanying drawings 2)；It is provided with upper and lower two elastic components 5 in each groove 101, one end of elastic component 5 is interior with locating piece 4
Wall is connected, and the madial wall of the other end and groove 101 offsets.
The operation principle for the casing collar locator (CCL) that the utility model embodiment provides is as described below：
The upper end of cylindrical body 1 is connected with the lower end of coiled tubing, in the lump in tripping in down-hole casing, treats cylindrical body 1
When near decentralization to target payzone, coiled tubing is above carried, observation coiled tubing changes in the suspending weight of well head, to complete casing coupling
Positioning.
Specifically, when transferring coiled tubing, the bottom outer wall of locating piece 4 and the priority of projection 401 on the top of locating piece 4 with
Down-hole casing inwall contacts and compresses the elastic component 5 of above and below respectively inwards, two elastic components 5 is located in down-hole casing
In compressive state, smoothly to transfer.In the process, the suspending weight of well head is held essentially constant.
Because two adjacent short sleeves have gap in box cupling, when locating piece 4 is transferred to the collar location of down-hole casing,
Projection 401 on locating piece 4 is radially sprung into the gap under the elastic force effect of elastic component 5.
Continue to transfer coiled tubing, the lower surface based on projection 401 is inclined upwardly, the lower surface stress of projection 401, along footpath
To the elastic component 5 of inside compression top, so that cylindrical body 1 passes through the box cupling.
When cylindrical body 1 is transferred to target payzone, coiled tubing is above carried.It is upper carry coiled tubing when, two bullets
Property part 5 is still in compressive state in down-hole casing, and in the process, the suspending weight of well head is held essentially constant.
When locating piece 4 is above carried to the collar location of down-hole casing, the elastic force of projection 401 on locating piece 4 in elastic component 5
Radially sprung into the gap under effect.
With the continuation above carried, being stuck in by projection 401 in gap is influenceed, and the suspending weight of well head will increase.Based on convex
The upper surface of block 401 tilts down, the upper surface stress of projection 401, the elastic component 5 of top compressed radially inward, so that
Cylindrical body 1 passes through the box cupling.Now, the suspending weight of well head recovers normal.
Staff can determine whether the quantity of box cupling and logical by observing coiled tubing in the suspending weight change frequency of well head
The quantity of the connected short sleeve of box cupling is crossed, is to determine due to the length of box cupling and short sleeve, can be counted according to above-mentioned each data
The distance that casing collar locator (CCL) moves up from underground is calculated, to judge the position of payzone.
The casing collar locator (CCL) can be installed by mode as described below：
One end of elastic component 5 is connected with the inwall of locating piece 4, by the other end of elastic component 5 and the madial wall of groove 101
Offset.Locating piece 4 inwardly is pressed, elastic component 5 is in compressive state, upper bush 2 is then set with the outer wall of cylindrical body 1
With lower sleeve 3, and make the lower end of the inwall of upper bush 2, the upper end upper and lower end phase with the outer wall of locating piece 4 respectively of the inwall of lower sleeve 3
Support, to complete the installation to the casing collar locator (CCL).
Based on above-mentioned, by the way that two elastic components 5 are arranged in groove 101, and its is set to be located at the top of groove 101 respectively
And bottom, equivalent to two fulcrums that locating piece 4 is formd in groove 101, make more steady after the stress of locating piece 4.Upper
During carrying coiled tubing, when the elastic component 5 of top is compressed, the elastic component 5 of lower section receives what is inwardly compressed all the time
Power, the elastic component 5 of top will not have an impact to the elastic component 5 of lower section, make two elastic components 5 and the stress of locating piece 4 more equal
It is even, steady, to avoid influenceing the change of coiled tubing suspending weight, and then it ensure that the locating effect to payzone.In addition, pass through setting
Locating piece 4 and elastic component 5, and both are connected, when being installed to casing collar locator (CCL), locating piece 4 can be passed through
Elastic component 5 is placed in groove 101, to avoid elastic component 5 from being shaken in groove 101, pacifies casing collar locator (CCL)
Dress is convenient.Also, by the way that projection 401 to be arranged on to the top of locating piece 4, the reset force after making the elastic component 5 of top compressed
Reset force after compressed more than the elastic component 5 of lower section, so as to add the upper lifting force to casing collar locator (CCL), makes continuous oil
The change of pipe suspending weight is more obvious, improves the positioning precision to payzone.
Wherein, multiple locating pieces 4 correspond with multiple grooves 101, i.e., each corresponding locating piece 4 of groove 101.For
Compressible space is provided to elastic component 5, and elastic component 5 is placed more steady, the shape of groove 101 in groove 101
It could be arranged to strip.
In the utility model embodiment, as shown in Figure 1, elastic component 5 includes：The inner shrapnel 501 that is sequentially connected with, tilt
Shell fragment 502 and outer shell fragment 503.Wherein, inner shrapnel 501 is bonded with the madial wall of groove 101, and respectively the top surface with groove 101,
There is spacing between bottom surface.Outer shell fragment 503 is connected with the inwall of locating piece 4.
By the way that elastic component 5 is arranged into said structure, when elastic component 5 is compressed, two inner shrapnels in groove 101
Madial wall of 501 meetings along groove 101 is upward respectively, moves down, to ensure that the elastic component 5 is easily compressed.By in two
Spacing is set between the top surface of shell fragment 501 and groove 101, bottom surface, ensure that inner shrapnel 501 has removable space, so as to reality
The compression and resilience of existing elastic component 5.
Further, it is vertically arranged with strip through-hole on outer shell fragment 503；Outer shell fragment 503 passes through bolt and the phase of locating piece 4
Even, the width of strip through-hole is less than the screw diameter of the bolt head diameter, simultaneously greater than bolt of bolt.
It is understood that bolt includes screw rod and is fixed on the bolt head of screw tip.By limiting strip through-hole
Width is less than the diameter of the diameter, simultaneously greater than screw rod of bolt head, it is meant that, outer shell fragment 503 can move along longitudinal strip through-hole
Dynamic, it is adjustable to realize the position on locating piece 4.
Based on outer shell fragment 503, position is adjustable on locating piece 4, and stress is also different when elastic component 5 is compressed, therefore,
By being set as above, position of the outer shell fragment 503 relative to locating piece 4 can be adjusted, with the stressing conditions of regulation elasticity part 5, is made
It meets actual job needs.
Wherein, the internal thread hole relative with outer shell fragment 503 is provided with the madial wall of locating piece 4, and in the internal thread hole
Internal thread be adapted with the external screw thread of bolt.
In order to ensure it is upper carry coiled tubing during, the junction for tilting shell fragment 502 and outer shell fragment 503 deforms
It is more smooth with resetting, while reduce the stress concentration for tilting shell fragment 502 and the junction of outer shell fragment 503, the He of shell fragment 502 will be tilted
The junction of outer shell fragment 503 sets transition face in the arc-shaped.
In the utility model embodiment, as shown in Figure 2, locating piece 4 includes：Body 402, be arranged on body 402,
The upper stopper 403 of lower end and lower block 404.Wherein, projection 401 is arranged in the external wall of upper portion of body 402.The He of upper stopper 403
Lower block 404 is formed by vertical block body and oblique block body, and respectively with the lower end of the inwall of upper bush 2 and the inwall of lower sleeve 3
Upper end offsets.
By the upper stopper 403 for setting constituted above and lower block 404, have effectively achieved locating piece 4 and upper bush 2 and
The close contact of lower sleeve 3, to realize that upper bush 2 and lower sleeve 3 to the spacing of locating piece 4, ensure that subsequent casings box cupling
Locator installment work is smoothed out.
Further, the lower end of the inwall of upper bush 2 and the upper end of the inwall of lower sleeve 3 are all provided with being set to the inclined-plane of bell mouth shape；
The inclined-plane is adapted to oblique block body and offseted.
When installing locating piece 4, one end of elastic component 5 is connected with the inwall of locating piece 4, the other end and groove 101
Madial wall offsets.Then upper bush 2 and lower sleeve 3 are sleeved on the outer wall of cylindrical body 1, make both of which and locating piece 4 tight
Contiguity is touched.
Phase interworking after being contacted by the bell mouth shape inclined-plane on upper bush 2 and lower sleeve 3 with the oblique block body on locating piece 4
Close, lower end, the upper end of the inwall of lower sleeve 3 that can quickly complete the inwall of upper bush 2 are upper and lower with the outer wall of locating piece 4 respectively
End offsets, so as to which locating piece 4 is installed and fixed.
Wherein, inclined-plane is adapted to offset and referred to oblique block body：The structure on the inclined-plane is adapted with the structure of oblique block body, simultaneously
Both can closely offset.
In the utility model embodiment, the upper surface of projection 401 and the angle of the center line of cylindrical body 1 are 55 ° -75 °,
For example, it can be 60 °, 70 ° etc.；The lower surface of projection 401 and the angle of the center line of cylindrical body 1 are 30 ° -50 °, citing
For, can be 35 °, 45 ° etc..
By being arranged such, it ensure that resistance is smaller when locating piece 4 is transferred in down-hole casing, decentralization process is more suitable
Profit.And it is upper carry continuous tubing string when, projection 401 generates larger reset force in the presence of the elastic force of elastic component 5 so that
Above carry more laborious during continuous tubing string, that is, increase the upper lifting force to casing collar locator (CCL), make coiled tubing in the outstanding of well head
Change again more obvious, be easy to staff to observe, be advantageous to improve the positioning precision to payzone.
In order to ensure that upper bush 2 and lower sleeve 3 are connected fastening with cylindrical body 1, and can be on the outer wall of cylindrical body 1
It is axially moveable, to realize the installation and fixation to locating piece 4.Meanwhile make locating piece 4 easy to disassemble, by upper bush 2 with
Sleeve 3 is threadedly coupled with cylindrical body 1.Wherein, the inwall of upper bush 2 and lower sleeve 3 is provided with internal thread, cylindrical body 1
Outer wall on be provided with the external screw thread being adapted with the internal thread.
Further, after upper bush 2, lower sleeve 3 are threadedly coupled with cylindrical body 1, by upper bush 2 and trapped by screw
Cylinder 3 is separately fixed on cylindrical body 1.
By being arranged such, the tightness that upper bush 2, lower sleeve 3 are connected with cylindrical body 1 is not only ensure that, is avoided
After being threadedly coupled with cylindrical body 1 thread looseness occurs for sleeve 2, lower sleeve 3, so as to influence the fixation to locating piece 4.
Specifically, the upper end of the side wall of upper bush 2 and the lower end of the side wall of lower sleeve 3 are provided with the first screwed hole；Tubular sheet
The top and bottom of body 1 are provided with second bolt hole relative with first screwed hole, and screw is consolidated after passing through the first screwed hole
It is scheduled in the second bolt hole.
Preferred embodiment of the present utility model is the foregoing is only, not to limit the scope of protection of the utility model,
All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., should be included in this reality
Within new protection domain.
Claims (9)
1. a kind of casing collar locator (CCL), including cylindrical body (1), outer wall is circumferentially arranged multiple grooves (101), its feature
It is, described sleeve pipe collar locator also includes：
Upper bush (2) and lower sleeve (3), are sleeved on the outer wall of the cylindrical body (1), and are located at the groove respectively
(101) above and below；
Multiple locating pieces (4), the lower end with the upper bush (2) inwall, the lower sleeve (3) are interior respectively for the upper and lower end of outer wall
The upper end of wall offsets, the external wall of upper portion of the locating piece (4) be radially provided with upper surface tilt down, lower end upwardly
Inclined projection (401)；
Upper and lower two elastic components (5), one end and the positioning of the elastic component (5) are provided with each groove (101)
The inwall of block (4) is connected, and the other end and the madial wall of the groove (101) offset.
2. casing collar locator (CCL) according to claim 1, it is characterised in that the elastic component (5) includes：It is sequentially connected with
Inner shrapnel (501), tilt shell fragment (502) and outer shell fragment (503)；
The inner shrapnel (501) is bonded with the madial wall of the groove (101), and the top surface with the groove (101), bottom respectively
There is spacing between face；
The outer shell fragment (503) is connected with the inwall of the locating piece (4).
3. casing collar locator (CCL) according to claim 2, it is characterised in that set on the outer shell fragment (503) along longitudinal direction
It is equipped with strip through-hole；
The outer shell fragment (503) is connected by bolt with the locating piece (4)；
The width of the strip through-hole is less than the bolt head diameter of the bolt, the screw diameter of simultaneously greater than described bolt.
4. casing collar locator (CCL) according to claim 2, it is characterised in that it is described inclination shell fragment (502) and it is described outside
The junction of shell fragment (503) sets transition face in the arc-shaped.
5. casing collar locator (CCL) according to claim 1, it is characterised in that the locating piece (4) includes：Body
(402) upper stopper (403) and lower block (404) of the body (402) upper and lower end, are arranged on；
The projection (401) is arranged in the external wall of upper portion of the body (402)；
The upper stopper (403) and the lower block (404) are formed by vertical block body and oblique block body, and respectively with it is described on
The lower end of sleeve (2) inwall and the upper end of the lower sleeve (3) inwall offset.
6. casing collar locator (CCL) according to claim 5, it is characterised in that the lower end of upper bush (2) inwall and
The upper end of lower sleeve (3) inwall is all provided with being set to the inclined-plane of bell mouth shape；
The inclined-plane is adapted to the tiltedly block body and offseted.
7. casing collar locator (CCL) according to claim 1, it is characterised in that the upper surface of the projection (401) and institute
The angle for stating cylindrical body (1) center line is 55 ° -75 °；
The lower surface of the projection (401) and the angle of the cylindrical body (1) center line are 30 ° -50 °.
8. casing collar locator (CCL) according to claim 1, it is characterised in that the upper bush (2) and the lower sleeve
(3) it is threadedly coupled with the cylindrical body (1).
9. casing collar locator (CCL) according to claim 8, it is characterised in that the upper bush (2), the lower sleeve
(3) after being threadedly coupled with the cylindrical body (1), the upper bush (2) and the lower sleeve (3) are fixed respectively by screw
On the cylindrical body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720463422.1U CN206830169U (en) | 2017-04-28 | 2017-04-28 | A kind of casing collar locator (CCL) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720463422.1U CN206830169U (en) | 2017-04-28 | 2017-04-28 | A kind of casing collar locator (CCL) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206830169U true CN206830169U (en) | 2018-01-02 |
Family
ID=60769169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720463422.1U Active CN206830169U (en) | 2017-04-28 | 2017-04-28 | A kind of casing collar locator (CCL) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206830169U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219172A (en) * | 2018-11-26 | 2020-06-02 | 中国石油天然气股份有限公司 | Tubular column positioning device for hydraulic jet drilling |
| CN111706269A (en) * | 2020-06-30 | 2020-09-25 | 熊朝柱 | Reducer and feeding method for feeding surface casing based on non-drilling time well cementation |
| CN116446827A (en) * | 2023-06-16 | 2023-07-18 | 山东普瑞思德石油技术有限公司 | Self-adjustable bottom filling tool |
-
2017
- 2017-04-28 CN CN201720463422.1U patent/CN206830169U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219172A (en) * | 2018-11-26 | 2020-06-02 | 中国石油天然气股份有限公司 | Tubular column positioning device for hydraulic jet drilling |
| CN111219172B (en) * | 2018-11-26 | 2021-09-28 | 中国石油天然气股份有限公司 | Tubular column positioning device for hydraulic jet drilling |
| CN111706269A (en) * | 2020-06-30 | 2020-09-25 | 熊朝柱 | Reducer and feeding method for feeding surface casing based on non-drilling time well cementation |
| CN116446827A (en) * | 2023-06-16 | 2023-07-18 | 山东普瑞思德石油技术有限公司 | Self-adjustable bottom filling tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106908339B (en) | A kind of oil/gas well downhole perforation explosion perforation tubular column experiment of machanics system and method | |
| CN206830169U (en) | A kind of casing collar locator (CCL) | |
| CN105781443B (en) | A kind of reducing centralizer | |
| CN203905848U (en) | Downhole self-adaptive elastic centralizer | |
| Hajianmaleki et al. | Critical-buckling-load assessment of drillstrings in different wellbores by use of the explicit finite-element method | |
| RU2013129304A (en) | COMPOSITION CENTER | |
| CN203847019U (en) | Limiting type hydraulic casing pipe straightening tool | |
| CN103850676A (en) | Novel casing coupling positioner for coiled tubing | |
| CN207660558U (en) | A kind of reducing centralizer | |
| CN109989732A (en) | A kind of flexibility screen casing and sand control completion tubing string and its application method | |
| CN202900044U (en) | Double stabilizer prebuckling dynamics pendulum drilling assembly | |
| CN206071481U (en) | A kind of spring-backed quill centralizer | |
| Qian-bei et al. | The research of post-buckling about slender rod string in wellbore based on energy method and experiment | |
| Perneder et al. | Steady-state solutions of a propagating borehole | |
| Ge et al. | Analysis of the external pressure on casings induced by salt-gypsum creep in build-up sections for horizontal wells | |
| Guo et al. | Safety evaluation method of tubing strings in high-pressure, high-temperature and high-yield gas wells based on FIV analysis | |
| CN110344819A (en) | A kind of high temperature and pressure high gas rate well completion tubular column vibration prediction method | |
| CN204040909U (en) | Anti-oblique packed hole assembly is used in underground heat exploitation | |
| CN206458458U (en) | A kind of steering tool bottom damping device | |
| CN104832158A (en) | Anti-sand mechanical coupling positioning tool | |
| CN215108795U (en) | Horizontal well hydraulic casing centralizer | |
| CN205936437U (en) | Have pole for oil production equipment centralizer and beam -pumping unit prevent spouting box with formula well head of rightting | |
| CN104196493B (en) | A kind of vibration wax-proof viscosity reducing vibrating reed, device and sucker rod | |
| CN208294452U (en) | A kind of drilling rig drill pipe stabilizer | |
| CN207795238U (en) | A kind of circular tube structure acoustic logging instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |