CN203420685U - Butting auxiliary device used for horizontal well subsection gravel filling - Google Patents
Butting auxiliary device used for horizontal well subsection gravel filling Download PDFInfo
- Publication number
- CN203420685U CN203420685U CN201320422820.0U CN201320422820U CN203420685U CN 203420685 U CN203420685 U CN 203420685U CN 201320422820 U CN201320422820 U CN 201320422820U CN 203420685 U CN203420685 U CN 203420685U
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- horizontal well
- pawl spring
- auxiliary device
- segments
- butt joint
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Abstract
The utility model provides a butting auxiliary device used for horizontal well subsection gravel filling. The butting auxiliary device comprises a butting tool and a butting service tool which are connected with each other. The butting tool comprises a first upper connector, a positioning barrel connected with the first upper connector and a guide barrel connected with the positioning barrel. The butting service tool comprises a second upper connector, a first connecting pipe connected with the second upper connector, a pawl spring seat, a pawl spring, a second connecting pipe, a clamping ring, a guide block and a lower connector, wherein the first connecting pipe is sleeved with the pawl spring seat, the pawl spring seat is sleeved with the pawl spring, the second connecting pipe is connected with the first connecting pipe, the second connecting pipe is sleeved with the clamping ring, the guide block is connected with the clamping ring and is positioned by the clamping ring, and the lower connector is connected with the second connecting pipe. The butting auxiliary device used for horizontal well subsection gravel filling can improve the success rate of the horizontal well subsection gravel filling construction.
Description
Technical field
The utility model relates to oil recovery machiner field, is specifically related to a kind of butt joint auxiliary device for horizontal well in segments gravel pack, is mainly used in the sand control treatment in Well Completion Engineering of Oil Reservoirs, petroleum production engineering.
Background technology
SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control technique is one of advanced technology of horizontal well completion, has the advantages that sand controlling result is outstanding, the sand control life is long.Apply this technology and can effectively prevent sand production, especially fine silt is had to good prevention effect, and can make oil well give full play to production capacity.At present, SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control technique has been widely used in horizontal well completion.
The horizontal well of the horizontal well of long net horizontal section, sectional well completion is implemented to gravel filling sand prevention and adopt segmentation gravel pack more.Horizontal well in segments gravel-pack assembly is the core tool of horizontal well in segments gravel pack, and the quality of its performance greatly affects horizontal well in segments gravel pack and is constructed into power.Horizontal well in segments gravel-pack assembly is comprised of sublevel fill stoping instrument and sublevel fill stoping service aid.Wherein, sublevel fill stoping instrument is lowered to completion tubular column when completion, and sublevel fill stoping service aid is lowered to back-up sand tubing string when filling.Only make the pack hole of sublevel fill stoping service aid and the pack hole of sublevel fill stoping instrument over against (docking), just can carry out gravel pack.
At present, carry out often can running into sublevel fill stoping service aid pack hole in butt-joint operation process and dock problem insufficient or that do not dock (seeing Fig. 1 a to Fig. 4 b) with sublevel fill stoping instrument pack hole.Wherein, Fig. 1 a and Fig. 1 b show sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1 axially docks insufficient state, sublevel fill stoping service aid pack hole a axially docks insufficient with sublevel fill stoping instrument pack hole b, be that sublevel fill stoping instrument pack hole is consistent with sublevel fill stoping service aid pack hole radial orientation angle, but axially above do not align completely.
Fig. 2 a and Fig. 2 b show the axial state not docking of sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1, and sublevel fill stoping service aid pack hole a does not axially dock with sublevel fill stoping instrument pack hole b; Be sublevel fill stoping instrument pack hole azimuth is consistent diametrically with sublevel fill stoping service aid pack hole, but in the axial direction completely dislocation.
Fig. 3 a and Fig. 3 b show the insufficient state of radial abutment of sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1, and sublevel fill stoping service aid pack hole a and sublevel fill stoping instrument pack hole b radial abutment are insufficient; Be sublevel fill stoping instrument pack hole and sublevel fill stoping service aid pack hole location matches in the axial direction, but azimuth is inconsistent diametrically.
The state that the radial abutment of sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1 of showing Fig. 4 a and Fig. 4 b does not go up, sublevel fill stoping service aid pack hole a and sublevel fill stoping instrument pack hole b radial abutment do not go up; Be sublevel fill stoping instrument pack hole and sublevel fill stoping service aid pack hole location matches in the axial direction, but dislocation completely diametrically.
Except these situations, also has the compound type of these exemplary.Dock insufficient being difficult on the ground and be detected, if filling meeting blindly causes sand plug in stowing operation, and then cause back-up sand failure; The words of not docking cannot filling.
Utility model content
The utility model provides a kind of butt joint auxiliary device for horizontal well in segments gravel pack, to solve sublevel fill stoping service aid, docks problem insufficient or that do not dock with sublevel fill stoping instrument.
For this reason, the utility model proposes a kind of butt joint auxiliary device for horizontal well in segments gravel pack, the described butt joint auxiliary device for horizontal well in segments gravel pack comprises: interconnective engaging tool and docking service aid;
Described engaging tool comprises: the first top connection, the positioning tube being connected with described the first top connection and the guide cylinder being connected with described positioning tube;
Described docking service aid comprises: the second top connection, the first tube connector being connected with described the second top connection, be set in pawl spring seat outside described the first tube connector, be set in pawl spring, the second tube connector being connected with described the first tube connector on described pawl spring seat, be set in snap ring outside described the second tube connector, be connected and be subject to the guide pad of described snap ring location and the lower contact being connected with described the second tube connector with described snap ring, described guide pad is located at outside described the second tube connector by spring housing;
Wherein, in described positioning tube, be provided with the cannelure to described pawl spring axial location, in described guide cylinder, be provided with guide way and the locating slot to described guide pad orientation to described guide pad guiding.
Further, described engaging tool is connected with sublevel fill stoping instrument.
Further, described docking service aid is connected with sublevel fill stoping service aid.
Further, described guide way is spirality, is distributed on the inwall of described guide cylinder.
Further, described pawl spring and described pawl spring seat are threaded connection, and described the first tube connector is provided with the convex to described pawl spring seat location.
Further, the number of described pawl spring seat is two, lays respectively at the both sides of described convex.
Further, described guide pad has the feather key of rectangle.
Further, described snap ring is threaded connection and is set in outside described the second tube connector, and the number of described snap ring is two, and described guide pad also has the positioning step that is arranged on described feather key both sides, and two snap rings are connected to respectively on the positioning step of both sides.
Further, described the second top connection connects back-up sand tubing string.
Further, described the first top connection connection segment gravel pack completion tubing string.
By the butt joint auxiliary device for horizontal well in segments gravel pack, can sublevel fill stoping instrument and sublevel fill stoping service aid be positioned and be led, and then sublevel fill stoping service aid is docked to the auxiliary effect of generation with sublevel fill stoping instrument, thereby reach the object that the well segmentation gravel pack of improving the standard is constructed into power.
Accompanying drawing explanation
Fig. 1 a is prior art sublevel fill stoping service aid and the axial main apparent direction half section structural representation that docks insufficient state of sublevel fill stoping instrument;
Fig. 1 b is the section structure of the X-X direction in Fig. 1 a;
Fig. 2 a is prior art sublevel fill stoping service aid and the axial main apparent direction half section structural representation that does not dock state of sublevel fill stoping instrument;
Fig. 2 b is the section structure of the X-X direction in Fig. 2 a;
Fig. 3 a is the main apparent direction half section structural representation of the insufficient state of radial abutment of prior art sublevel fill stoping service aid and sublevel fill stoping instrument;
Fig. 3 b is the section structure of the X-X direction in Fig. 3 a;
Fig. 4 a is the main apparent direction half section structural representation that the radial abutment of prior art sublevel fill stoping service aid and sublevel fill stoping instrument does not go up state;
Fig. 4 b is the section structure of the X-X direction in Fig. 4 a;
Fig. 5 is for partly cuing open structure according to the main apparent direction of the engaging tool of the utility model embodiment;
Fig. 6 a is for partly to cut open structure according to the upper part of the main apparent direction of the docking service aid of the utility model embodiment;
Fig. 6 b is for partly to cut open structure according to the lower part of the main apparent direction of the docking service aid of the utility model embodiment, wherein, due to, docking service aid is elongated member, therefore the integral body of docking service aid is divided into upper part, represent respectively with lower part, the upper part of docking service aid is connected at T-T place with lower part;
Fig. 7 is for partly cuing open structure according to the main apparent direction of the butt joint auxiliary device of the utility model embodiment;
Fig. 8 a is according to the structural representation of the main apparent direction of the butt joint auxiliary device duty of the utility model embodiment, i.e. the structural representation of butt joint auxiliary device after being connected with sublevel fill stoping service aid with sublevel fill stoping instrument;
Fig. 8 b is the section structure of the X-X in Fig. 8 a;
Fig. 9 is the sectional structure of A-A direction in Fig. 5;
Figure 10 is the sectional structure of B-B direction in Fig. 5;
Figure 11 is the sectional structure of C-C direction in Fig. 5;
Figure 12 is the section structure of D-D in Fig. 6 a;
Figure 13 is the section structure of E-E in Fig. 6 b;
Figure 14 is the section structure of F-F in Fig. 6 b;
Figure 15 is the section structure of G-G in Fig. 7;
Figure 16 is the section structure of H-H in Fig. 7;
Figure 17 is the stereochemical structure of pawl spring.
Drawing reference numeral explanation:
1, sublevel fill stoping instrument 2, sublevel fill stoping service aid a, sublevel fill stoping service aid pack hole b, sublevel fill stoping instrument pack hole 3, engaging tool 4, docking service aid 31, the first top connection 32, positioning tube 33, guide cylinder 41, the second top connection 42, the first tube connector 43, pawl spring seat 44, pawl spring 45, the second tube connector 46, snap ring 47, guide pad 48, spring 49, lower contact 320, cannelure 332, guide way 334, locating slot 420, convex 470, feather key 440, the collar 442, axial connecting portion 444, positioning body 446, saturating groove
The specific embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing the specific embodiment of the present utility model is described.
As shown in Fig. 7 and Fig. 8 a, according to the butt joint auxiliary device for horizontal well in segments gravel pack of the utility model embodiment, comprise: interconnective engaging tool 3 and docking service aid 4.The above-below direction of take in scheming in top and bottom mentioned herein is standard, might not be said top and bottom in practical work process.
As shown in Figure 5, described engaging tool 3 comprises: the first top connection 31, the positioning tube 32 being connected with described the first top connection 31 and the guide cylinder 33 being connected with described positioning tube 32.Described the first top connection 31 is casing coupling structure, can connection segment gravel pack completion tubing string, and to realize horizontal well in segments gravel pack.As Fig. 9, positioning tube 32 is tubular structure; Lower end is processed with casing threads, is connected with the first top connection 31; Positioning tube 32 upper ends are processed with regular screw threads, are connected with guide cylinder 33; Middle part is processed with cannelure 320, and docking service aid 4 is played to positioning action.Guide cylinder 33 is tubular structure; Lower end is processed with screw thread, is connected with positioning tube 32; Upper end is processed with casing threads, is connected with sublevel fill stoping instrument 1; Inside is processed with guide way 332(and sees Figure 10) and locating slot 334(cross-sectional structure see Figure 10, Figure 11), guide way 332 can be for being arranged on convex body or the convex tendon on the inwall of guide cylinder 33, guide way 332 extends to form spirality to the direction of positioning tube 32, guide way 332 sides are helicoid, can make the guide pad 47 that docks service aid 4 rotate, to guide pad 47 guiding, guiding guide pad 47 enters locating slot 334,334 pairs of described guide pad 47 location of locating slot.
As shown in Fig. 6 a and Fig. 6 b, described docking service aid 4 comprises: the second top connection 41, the first tube connector 42 being connected with described the second top connection 41, be set in the pawl spring seat 43 outside described the first tube connector 42, be set in the pawl spring 44 on described pawl spring seat 43, the second tube connector 45 being axially connected with described the first tube connector 42, be set in the snap ring 46 outside described the second tube connector 45, be connected and be subject to the guide pad 47 of described snap ring 46 location with described snap ring 46, and the lower contact 49 being connected with described the second tube connector 45, described guide pad 47 is set in outside described the second tube connector 45 by cylindrical spring 48, cylindrical spring 48 is cylinder-shaped compression spring, radical elasticity is provided, makes guide pad 47 there is elasticity.
The second top connection 41 is tubing coupling structure, for connecting back-up sand tubing string.
As Fig. 6 a, the first tube connector 42 is tubular structure; Lower end is processed with tubing round thread, is connected with the second top connection 41; Upper end is processed with regular screw threads and is connected with the second tube connector 45; There is convex 420 at middle part, for installing and limit the axially-movable of pawl spring seat 43.
Pawl spring seat 43 is circular ring structure; Inner circle and the first tube connector 42 are matched in clearance, can make pawl spring seat 43 be sleeved on outside the first tube connector 42; Excircle machining screw thread, for installing pawl spring 44; Pawl spring seat 43 is divided into two of left and right, is installed on respectively the first tube connector 42 middle part convex 420 both sides.
As Figure 17, pawl spring 44 is elastomeric material making; Two ends are the collar 440, on the collar 440 inside walls, are processed with screw thread, are connected respectively with the pawl spring seat 43 at two ends, and pawl spring 44 is threaded connection and is enclosed within on pawl spring seat 43; The collar 440 at pawl spring 44 two ends connects by axial connecting portion 442, and axially connecting portion 442 is strip, and axially connecting portion 442 is identical with the wall thickness of the collar 440, and radian is identical.Pawl spring 44 middle parts are processed with positioning body 444, the projection that positioning body 444 matches for the shape with cannelure 320, and to radially extending, for example, be fan-shaped, so that positioning body 444 is fixed in cannelure 320, the edge of positioning body 444 also has chamfering; Pawl spring 44 is removed screw thread position, two ends, processes vertically many saturating grooves 446 of strip, so that radial expansion.Do not include positioning body 444, the actual cylindrical shape that becomes the saturating groove 446 of the spaced a plurality of strips of tool of pawl spring 44.
When pawl spring 44 enters will enter the smaller cylindrical structure with pawl spring 44 external diameters of internal diameter time, pawl spring 44 positioning body 444 fillet surfaces act on mutually with cylinder chamfering end face, and pawl spring 44 can be made radial contraction, and now pawl spring 44 is contraction state; When barrel bore is greater than pawl spring 44 external diameter, pawl spring 44 reverts to free state.As shown in Figure 5, when pawl spring 44 enters positioning tube 32 by the lower end of positioning tube 32, because the interior latus rectum of positioning tube 32 is less than pawl spring 44 positioning body 444 external diameters, pawl spring 44 positioning body 444 fillet surfaces and positioning tube 32 lower end fillet surfaces interact, and pawl spring 44 is shunk, and pawl spring 44 is allowed for access in positioning tube 32, when pawl spring 44 positioning bodies 444 are when cannelure 320 is interior, pawl spring 44 returns to free state, and because cannelure 320 and positioning body 444 match, 32 pairs of pawl springs 44 of positioning tube are realized axial location; When continuing docking service aid 4 to implement certain end thrust, pawl spring 44 can be thrown off with cannelure 320, and docking service aid 4 is passed by engaging tool 3.By pawl spring 44, can realize the positioning function of better carrying out axially and radially, thereby provide location for docking service aid 4 with being connected of engaging tool 3.
The second tube connector 45 is tubular structure; Two ends are processed with screw thread, and lower end is connected with the first tube connector 42, and upper end is connected with lower contact 49; The middle part of external surface is cylinder (cross-sectional structure is shown in Figure 13), and cylinder middle part is processed with rectangular channel, and rectangular channel is for mounting spring 48 and guide pad 47; The cylinder left and right sides is processed with screw thread, for snap ring 46 is installed.
As Fig. 6 b, guide pad is two ends processing step Shang Xia 47, is blocked respectively by the snap ring 46 at two ends; External surface middle part is processed with the feather key 470 of rectangle, and with generation rotation after engaging tool 3 guide way 332 effects, square key enters after locating slot 334, and docking service aid 4 is relative fixing with the radial position of engaging tool 3; Inner surface middle part is drilled with cylindrical hole, for mounting spring 48.Cylindrical spring 48 is cylinder-shaped compression spring; Radical elasticity is provided, makes guide pad 47 there is elasticity.
Wherein, in described positioning tube 32, be provided with the cannelure 320 to described pawl spring 44 axial location, when docking service aid 4 insertion engaging tools 3 axially move, pawl spring 44 relatively docking service aid 4 axial locations is fixed, thereby it is relative fixing with the axial location of engaging tool 3 to make to dock service aid 4,3 pairs of docking service aids of engaging tool 4 produce axial location.
As Figure 10 and Figure 11, in described guide cylinder 33, be provided with the guide way 332 to described guide pad 47 guiding, when docking service aid 4 insertion engaging tools 3 axially move, guide pad 47 interacts with guide way 332 sides of guide cylinder 33, make guide pad 47 around axis spiral rotating, due to the radial orientation of guide pad 47, relatively to dock service aid 4 fixing, the docking service aid 4 that rotarily drives of guide pad 47 rotates, when guide pad 47 enters after the locating slot 334 of guide cylinder 33, the radial position of docking service aid 4 relative engaging tools 3 is fixed, be that 3 pairs of docking service aids of engaging tool 4 produce radial location.
As Fig. 8 a and Fig. 8 b, described engaging tool 3 is connected with sublevel fill stoping instrument 1.Described docking service aid 4 is connected with sublevel fill stoping service aid 2.Like this, by the help of butt joint auxiliary device, sublevel fill stoping instrument 1 and sublevel fill stoping service aid 2 carry out work while installing, and just can realize aligning completely of axial and radial position, realize sublevel fill stoping service aid pack hole and sublevel fill stoping instrument 1 pack hole over against.
Further, described the first tube connector 42 is threaded connection with described pawl spring seat 43, and as Fig. 6 a, described the first tube connector 42 is provided with the convex 420 to described pawl spring seat 43 location.Convex 420 can be to pawl spring seat 43 axial location.
Further, as Fig. 6 a, the number of described pawl spring seat 43 is two, lays respectively at the both sides of described convex 420.Like this, can realize two-way clamping and the stretching, extension of pawl spring 44.
Further, as Figure 13, described guide pad 47 has the feather key 470 of rectangle.The feather key 470 of rectangle interacts with guide way 332 sides of guide cylinder 33, make guide pad 47 around axis spiral rotating, the outline of guide way 332 has the surface that the feather key 470 with rectangle matches, and is convenient to mutual extruding, interact, to realize guiding.
Further, as Figure 14 and Fig. 6 b, described snap ring 46 is threaded connection and is set in outside described the second tube connector 45, the number of described snap ring 46 is two, as Figure 14, described guide pad 47 also has the positioning step that is arranged on described feather key 470 both sides, and two snap rings 46 are connected to respectively on the positioning step of both sides.Like this, guide pad 47 obtains two-way fixing.
Positioning principle of the present utility model is as follows:
The pawl spring seat 43 of the positioning tube 32 of engaging tool 3 and docking service aid 4, pawl spring 44, the common formation location structure of the first tube connector 42.When docking service aid 4 insertion engaging tools 3 axially move, see Figure 15 and Fig. 9, in a certain permanent position, the positioning body 444 of pawl spring 44(or pawl spring 44) embed in the cannelure 320 of positioning tube 32, under the elastic force effect of pawl spring 44, pawl spring 44 is caught cannelure 320 securely, make pawl spring 44 relatively engaging tool 3 axially move, at pawl spring seat 43, under the convex 420 of the first tube connector 42 interacts, the relative docking service aid of pawl spring 44 4 axial locations are fixed, as Figure 12 and Figure 15, thereby it is relative fixing with the axial location of engaging tool 3 to make to dock service aid 4, be that 3 pairs of docking service aids of engaging tool 4 produce axial location.
Guiding principle of the present utility model is as follows:
Guide frame of the present utility model consists of the guide cylinder 33 of engaging tool 3 and snap ring 46, guide pad 47, spring 48, second tube connector 45 of docking service aid 4.When docking service aid 4 insertion engaging tools 3 axially move, the rectangle feather key 470 of guide pad 47 interacts with guide way 332 sides of guide cylinder 33, make guide pad 47 around axis spiral rotating, due to the radial orientation of guide pad 47, relatively to dock service aid 4 fixing, the docking service aid 4 that rotarily drives of guide pad 47 rotates, when guide pad 47 enters after the locating slot 334 of guide cylinder 33, the radial position of docking service aid 4 relative engaging tools 3 is fixed, be that 3 pairs of docking service aids of engaging tool 4 produce radial location, as Figure 16.
Docking operation of the present utility model:
Engaging tool 3 is connected with sublevel fill stoping instrument 1, and docking service aid 4 is connected with sublevel fill stoping service aid 2.Adjust in advance each tool length, make to dock the boss of the positioning body 444(pawl spring 44 of service aid 4) to the distance of sublevel fill stoping service aid pack hole a and the cannelure of engaging tool 3 320 to sublevel fill stoping instrument pack hole b distances, equate, after 3 pairs of docking service aids 4 of engaging tool position, the pack hole of sublevel fill stoping service aid 2 is consistent with sublevel fill stoping instrument pack hole b axial location.During connection, adjust in advance tool azimuth angle, make the locating slot 334 of engaging tool 3 consistent with the radial orientation of sublevel fill stoping instrument pack hole b, docking service aid 4 guide waies 332 are consistent with the radial orientation angle of sublevel fill stoping service aid pack hole a.Engaging tool 3 and sublevel fill stoping instrument 1 are lowered to completion tubular column during in completion, and docking service aid 4 and sublevel fill stoping service aid 2 are lowered to back-up sand tubing string during in filling.When 3 pairs of docking service aids 4 of engaging tool position after orientation, sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1 pack hole over against, as Fig. 8 a.
After first order docking finishes, transfer back-up sand tubing string, docking service aid 4 pawl springs 44 shrink, the positioning body 444 of pawl spring 44 is deviate from from the cannelure 320 of engaging tool 3 positioning tubes 32, docking service aid 4 is crossed first order engaging tool 3 to second level engaging tool 3, repeat the operation of first order docking, can realize successively second level docking, third level docking, so more multistage docking.
The utility model matches with horizontal well in segments gravel-pack assembly, simple in structure, and stable performance can realize location, the two large functions that lead, and can effectively assist docking; Device limits without progression, and docking service aid 4 one-trip strings are lowered to, and just can cooperate with engaging tools 3 at different levels successively, realizes docking of sublevel fill stoping service aid 2 and sublevel fill stoping instrument 1.
The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.For each ingredient of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; do not depart from equivalent variations and the modification of having done under the prerequisite of design of the present utility model and principle, all should belong to the scope of the utility model protection.
Claims (10)
1. for a butt joint auxiliary device for horizontal well in segments gravel pack, it is characterized in that, the described butt joint auxiliary device for horizontal well in segments gravel pack comprises: interconnective engaging tool and docking service aid;
Described engaging tool comprises: the first top connection, the positioning tube being connected with described the first top connection and the guide cylinder being connected with described positioning tube;
Described docking service aid comprises: the second top connection, the first tube connector being connected with described the second top connection, be set in pawl spring seat outside described the first tube connector, be set in pawl spring, the second tube connector being connected with described the first tube connector on described pawl spring seat, be set in snap ring outside described the second tube connector, be connected and be subject to the guide pad of described snap ring location and the lower contact being connected with described the second tube connector with described snap ring, described guide pad is located at outside described the second tube connector by spring housing;
Wherein, in described positioning tube, be provided with the cannelure to described pawl spring axial location, in described guide cylinder, be provided with the guide way of described guide pad guiding and the locating slot to described guide pad location.
2. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described engaging tool is connected with sublevel fill stoping instrument.
3. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described docking service aid is connected with sublevel fill stoping service aid.
4. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described guide way is spirality, is distributed on the inwall of described guide cylinder.
5. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described pawl spring and described pawl spring seat are threaded connection, and described the first tube connector is provided with the convex to described pawl spring seat location.
6. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, the number of described pawl spring seat is two, lays respectively at the both sides of described convex.
7. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described guide pad has the feather key of rectangle.
8. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, it is characterized in that, described snap ring is threaded connection and is set in outside described the second tube connector, the number of described snap ring is two, described guide pad also has the positioning step that is arranged on described feather key both sides, and two snap rings are connected to respectively on the positioning step of both sides.
9. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described the second top connection connects back-up sand tubing string.
10. the butt joint auxiliary device for horizontal well in segments gravel pack as claimed in claim 1, is characterized in that, described the first top connection connection segment gravel pack completion tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422820.0U CN203420685U (en) | 2013-07-16 | 2013-07-16 | Butting auxiliary device used for horizontal well subsection gravel filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320422820.0U CN203420685U (en) | 2013-07-16 | 2013-07-16 | Butting auxiliary device used for horizontal well subsection gravel filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420685U true CN203420685U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320422820.0U Expired - Fee Related CN203420685U (en) | 2013-07-16 | 2013-07-16 | Butting auxiliary device used for horizontal well subsection gravel filling |
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| CN (1) | CN203420685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484708A (en) * | 2015-12-30 | 2016-04-13 | 中国石油天然气股份有限公司 | Rotating sliding sleeve type bottom filling device for gravel fill |
-
2013
- 2013-07-16 CN CN201320422820.0U patent/CN203420685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484708A (en) * | 2015-12-30 | 2016-04-13 | 中国石油天然气股份有限公司 | Rotating sliding sleeve type bottom filling device for gravel fill |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20210716 |