CN207048770U - A kind of adjustable collar locator of sand-proof type - Google Patents
A kind of adjustable collar locator of sand-proof type Download PDFInfo
- Publication number
- CN207048770U CN207048770U CN201720842914.1U CN201720842914U CN207048770U CN 207048770 U CN207048770 U CN 207048770U CN 201720842914 U CN201720842914 U CN 201720842914U CN 207048770 U CN207048770 U CN 207048770U
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- Prior art keywords
- central tube
- sand
- resilient sleeve
- proof type
- collar locator
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- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 14
- 230000008859 change Effects 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of adjustable collar locator of sand-proof type, including central tube, resilient sleeve, regulation ring, it is with holes to lead footwear, holding screw and ratchet are raised, the external diameter of described resilient sleeve is more than casing inner diameter, resilient sleeve is located at outside central tube, it is connected with central tube threaded upper ends, fixed by holding screw, described regulation ring has connection screw thread, regulation ring and the threaded connection of central tube outer barrel, it is circumferentially located in by holding screw on keyway, described footwear with holes of leading are threadedly coupled with central tube outer barrel threaded lower end, fixed by holding screw, the raised lower end for being located at resilient sleeve of described ratchet.The utility model may be implemented in sleeve pipe and can be accurately positioned, and can when by collar location suspending weight change it is obvious and uniformly, changed when suspending weight changes unobvious by rotating adjustment ring to improve suspending weight, and the collar locator possesses sand-proof function, effectively reduces sand card risk.
Description
Technical field
Originally it is new to be related to a kind of continuous oil pipe tool, specifically a kind of adjustable collar locator of sand-proof type.
Background technology
Most domestic oil-gas reservoir needs separate zone production to implement staged fracturing acid to improve recovery ratio on stream
The storey increase design measures such as change.And coiled tubing and its instrument depth of setting must be carried out in this transformation process more accurate
Control, just can be optimal fracture acidizing effect.
At present, the depth counter that continuous oil pipe operation equipment carries can not meet the pinpoint work of this kind of needs
Industry, error caused by its 1000m are about 2m or so, can not meet job requirements；And fracturing sand and ground in pressing crack construction process
The backwash of layer sand is difficult, easily causes tubing string sand card；Common collar locator wears no resistance, the life-span is low, enter easily cause after well it is outstanding
Unobvious are shown in representation, and can not reuse.
Authorization Notice No. is that CN201220647428.1 Chinese patent literature discloses a kind of coiled tubing novel complete
Pipe collar locator, casing collar location is determined applied to oil field well coiled tubing.Including body, upper cap, spacer, spiral shell
It is hollow cylindrical to revolve spring and lower cover cap, body, is provided with axial notch on the body outer wall, is embedded in axial notch
There is the spacer, at least three equally distributed helical springs be provided between the spacer and axial notch,
The upper cap and lower cover cap are fixed on body, and upper cap and lower cover cap block the spacer respectively.Effect is：Can
Realization is accurately positioned, and can suspending weight change is obvious and uniformly when by collar location, be highly suitable in non-hermetically sealed big envelope
Continuous oil pipe operation is accurately positioned in pipe.
But the prior art using above-mentioned patent document as representative, it still has following shortcoming：
1st, in above-mentioned patent document, the spacer and this body space are very big, and fracturing sand will be by this after spring is compressed
Gap, which enters, holds the space for staying spring, and is difficult to wash out fracturing sand by circulation, and fracturing sand is constantly hoarded can cause at this
Spring can not be compressed or be compressed away from small, crossed casing coupling ground and be displayed without suspending weight change, more very cause sand card tubing string.
2nd, in above-mentioned patent document, spacer causes frictional force to diminish long afterwards with internal surface of sleeve pipe friction, causes sleeve pipe to connect
Hoop ground suspending weight change display dies down, it is impossible to is accurately positioned, casing coupling suspending weight had been improved since the locator that can only more renew
Change display precision.Such a structure type, service life is short in real process, can not be widely popularized use at all.
The content of the invention
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art to exist, there is provided a kind of sand-proof type is adjustable to be connect
Bind round locator, realizing can be accurately positioned in sleeve pipe, and can suspending weight change is obvious and uniformly when by collar location, hang
Changed when changing unobvious again by rotating adjustment ring to improve suspending weight, and the collar locator possesses sand-proof function, effectively drops
Low sand card risk.
The technical scheme in the invention for solving the technical problem is：A kind of adjustable box cupling positioning of sand-proof type
Device, including central tube, resilient sleeve, regulation ring, footwear, holding screw and the ratchet with holes of leading are raised, described central tube upper end, lower end
Joint screw thread is respectively arranged with, the external diameter of described resilient sleeve is more than casing inner diameter, and elasticity is cased with connection screw thread, and resilient sleeve is located at
Outside central tube, resilient sleeve is connected with central tube threaded upper ends, and resilient sleeve is fixed on central tube by holding screw, described
There is a joint screw thread central tube middle and upper part, and thread segment is provided with keyway, and described regulation ring has a connection screw thread, in regulation ring and central tube
The joint screw thread threaded connection on top, regulation ring are circumferentially located on keyway by holding screw, and described footwear with holes of leading have company
Screw thread is connect, footwear with holes of leading are threadedly coupled with the joint screw thread of central tube lower end, and footwear with holes of leading are fixed on center by holding screw
Guan Shang, the raised lower end for being located at resilient sleeve of described ratchet.
As optimization, described central tube is hollow cylindrical.
As optimization, circumferentially it is evenly distributed with described resilient sleeve and cuts groove, cut groove and diameter parallel.
As optimization, described resilient sleeve is process by elastic alloy steel.
As optimization, described upper shoe part with holes of leading circumferentially is provided with macropore.
As optimization, the raised ramp of described ratchet is less than lower inclined plane and horizontal folder with horizontal angle
Angle, lower inclined plane and horizontal variable angle are gentle.
As optimization, described ratchet projection passes through Nitrizing Treatment.
The beneficial effects of the utility model are：Compared with prior art, a kind of sand-proof type of the present utility model is adjustable connects
Hoop locating apparatus has the advantage that：
1. annular clearance is larger among central tube and resilient sleeve, footwear upper end with holes of leading carries macropore, can be effective by circulation
Reservoir sand or fracturing sand are gone out into macropore, substantially reduce sand card risk；
2. regulation ring and central tube threaded connection, circumferentially positioned by holding screw, when ground shows that locator crosses sleeve pipe
During box cupling during suspending weight difference unobvious, shown by adjusting regulation ring in the position of central tube to change suspending weight, can effectively improve makes
Use the life-span；
3. resilient sleeve is processed by elastic alloy steel, ratchet segment passes through Nitrizing Treatment, can be effectively increased its wear-resisting intensity, improves
Service life.
Brief description of the drawings
Fig. 1 is the utility model overall construction drawing；
Tubular construction figure centered on Fig. 2；
Wherein, 1 central tube, 2 resilient sleeves, 3 regulation rings, 4 with holes lead footwear, 5 holding screws, 6 cut groove, in 7 ratchet projections 71
Inclined-plane, 72 lower inclined planes, 8 macropores, 9 keyways.
Embodiment
In embodiment as shown in Figure 1, a kind of adjustable collar locator of sand-proof type, including central tube 1, resilient sleeve 2, regulation
Ring 3, it is with holes lead footwear 4, holding screw 5 and ratchet projection 7, central tube 1 is hollow cylindrical, and its upper end, lower end have respectively
Joint screw thread, the external diameter of resilient sleeve 2 are more than casing inner diameter, and resilient sleeve 2 has connection screw thread, and resilient sleeve 2 is located at outside central tube 1,
Resilient sleeve 2 is connected with the threaded upper ends of central tube 1, and resilient sleeve 2 is fixed on central tube 1 by holding screw 5, in central tube 1 on
There is joint screw thread in portion, and thread segment is provided with keyway 9, and regulation ring 3 has the joint spiral shell of connection screw thread, regulation ring 3 and the middle and upper part of central tube 1
Line is threadedly coupled, and regulation ring 3 is circumferentially located on keyway 9 by holding screw 5, and footwear 4 with holes of leading have connection screw thread, with holes to lead footwear
4 are threadedly coupled with the joint screw thread of the lower end of central tube 1, and footwear 4 with holes of leading are fixed on central tube 1 by holding screw 5, and ratchet is convex
Play 7 lower ends for being located at resilient sleeve 2.
Circumferentially it is evenly distributed with resilient sleeve 2 and cuts groove 6, cut groove 6 and diameter parallel, resilient sleeve 2 is processed by elastic alloy steel
Form, footwear 4 top with holes of leading circumferentially is provided with macropore 8, and ramp 71 and the horizontal angle of ratchet projection 7 are less than lower inclined plane 72
With horizontal angle, lower inclined plane 72 and horizontal variable angle are gentle, and ratchet projection 7 passes through Nitrizing Treatment.
Operation principle：
Coiled tubing connecting connector and other downhole tools connect the adjustable collar locator of sand-proof type, tripping in sleeve pipe, under
During entering, because ramp 71 and the horizontal angle of ratchet projection 7 are less than lower inclined plane 72 and horizontal angle, under
Inclined-plane 72 and horizontal variable angle are gentle, and box cupling suspending weight is crossed when transferring coiled tubing and shows unobvious.Then slowly above carry
Coiled tubing determines casing collar location, and sleeve position is determined by contrasting passage time, when the adjustable box cupling of sand-proof type is determined
During the ratchet 7 sleeve pipe box cupling gap of projection of position device, because resilient sleeve 2 is flexible, under restoring force effect, ratchet projection 7
External diameter can be expanded, and projection can be caught in casing coupling gap, now continue slowly above to carry coiled tubing, ratchet projection 7 can be upper
Gradually tapered up in the presence of lifting power, in the process, collar locator changes with casing coupling frictional force, so as to cause
The increase of coiled tubing well head suspending weight, when value added reaches 1.5 tons -2.5 tons or so, ratchet projection 7 will sleeve pipe box cupling
In sleeve pipe above, now suspending weight recovers the suspending weight that normally can above carry.
If reservoir sand or fracturing sand is more when needing well-flushing in well, flushing fluid passes through locator resilient sleeve 2 and center
Flowed out after pipe 1 through the macropore 8 with holes led on footwear 4, can effectively rinse internal gravel, ensure raised 7 energy of ratchet of the lower end of resilient sleeve 2
Smoothly recover.
Because ratchet projection 7 and casing coupling have CONTACT WITH FRICTION always, the wall that ratchet projection 7 will be produced after of long duration becomes
It is thin, cause raised 7 restoring forces of ratchet to diminish, frictional force also diminishes between casing coupling, is hanged when less than 1 ton hour, excessively box cupling ground
Unobvious will be shown again.Now, by raising the position of regulation ring 3, resilient sleeve 2 is supported, frictional force can be effectively improved, prolonged significantly
Long life.
Above-mentioned embodiment is only specific case of the present utility model, and scope of patent protection of the present utility model includes
But the product form and style of above-mentioned embodiment are not limited to, any one kind for meeting the utility model claims book is gathered
The appropriate change or modification that imide membrane dust arrester and any person of an ordinary skill in the technical field are done to it, all
Scope of patent protection of the present utility model should be fallen into.
Claims (7)
- A kind of 1. adjustable collar locator of sand-proof type, it is characterised in that：Including central tube（1）, resilient sleeve（2）, regulation ring （3）, with holes lead footwear（4）, holding screw（5）It is raised with ratchet（7）, described central tube（1）Upper end, lower end, which are respectively arranged with, to be connect Head thread, described resilient sleeve（2）There are connection screw thread, resilient sleeve（2）Positioned at central tube（1）Outside, resilient sleeve（2）With central tube （1）Threaded upper ends connect, resilient sleeve（2）Pass through holding screw（5）It is fixed on central tube（1）On, described central tube（1）In on There is joint screw thread in portion, and thread segment is provided with keyway（9）, described regulation ring（3）There are connection screw thread, regulation ring（3）And central tube（1） The joint screw thread threaded connection of middle and upper part, regulation ring（3）Pass through holding screw（5）It is circumferentially located in keyway（9）On, described band Lead footwear in hole（4）There is connection screw thread, it is with holes to lead footwear（4）With central tube（1）The joint screw thread threaded connection of lower end, it is with holes to lead footwear（4） Pass through holding screw（5）It is fixed on central tube（1）On, described ratchet is raised（7）Positioned at resilient sleeve（2）Lower end.
- A kind of 2. adjustable collar locator of sand-proof type as claimed in claim 1, it is characterised in that：Described central tube（1） For hollow cylindrical.
- A kind of 3. adjustable collar locator of sand-proof type as claimed in claim 1, it is characterised in that：Described resilient sleeve（2） Upper circumference, which is evenly distributed with, cuts groove（6）, cut groove（6）With diameter parallel.
- A kind of 4. adjustable collar locator of sand-proof type as claimed in claim 1 or 2, it is characterised in that：Described resilient sleeve （2）It is process by elastic alloy steel.
- A kind of 5. adjustable collar locator of sand-proof type as claimed in claim 1, it is characterised in that：It is described with holes to lead footwear （4）Top is circumferentially provided with macropore（8）.
- A kind of 6. adjustable collar locator of sand-proof type as claimed in claim 1, it is characterised in that：Described ratchet is raised （7）Ramp（71）It is less than lower inclined plane with horizontal angle（72）With horizontal angle, lower inclined plane（72）With horizontal line Variable angle it is gentle.
- A kind of 7. adjustable collar locator of sand-proof type as claimed in claim 1, it is characterised in that：Described ratchet is raised （7）By Nitrizing Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842914.1U CN207048770U (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable collar locator of sand-proof type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720842914.1U CN207048770U (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable collar locator of sand-proof type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048770U true CN207048770U (en) | 2018-02-27 |
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ID=61496325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720842914.1U Active CN207048770U (en) | 2017-07-12 | 2017-07-12 | A kind of adjustable collar locator of sand-proof type |
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| Country | Link |
|---|---|
| CN (1) | CN207048770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685624A (en) * | 2019-11-19 | 2020-01-14 | 大连华科机械有限公司 | A coupling locator |
-
2017
- 2017-07-12 CN CN201720842914.1U patent/CN207048770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685624A (en) * | 2019-11-19 | 2020-01-14 | 大连华科机械有限公司 | A coupling locator |
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