CN210422563U - Cementing head rubber plug indicating device and integral cementing head - Google Patents
Cementing head rubber plug indicating device and integral cementing head Download PDFInfo
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- CN210422563U CN210422563U CN201921384764.XU CN201921384764U CN210422563U CN 210422563 U CN210422563 U CN 210422563U CN 201921384764 U CN201921384764 U CN 201921384764U CN 210422563 U CN210422563 U CN 210422563U
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Abstract
The utility model provides a cementing head rubber plug indicating device and an integral cementing head provided with the same, relating to the technical field of petroleum auxiliary components and comprising an indicator body, a shifting fork shaft, a sliding part and an elastic element; the indicator body is provided with a central hole; the shifting fork shaft penetrates through the outer end of the indicator body, and an inner shifting fork and an outer shifting fork are arranged on the shifting fork shaft; the sliding piece is in sliding fit with the indicator body, one end of the sliding piece is provided with an arc-shaped part, and the other end of the sliding piece is provided with a pushing part. The utility model provides a cementing head plug indicating device, the well cementation plug that moves down in the cementing head with set up in the contact of the inner arc portion of slider, the promotion portion that can utilize the slider outer end drives the declutch shift shaft and rotates around its axis to the shift fork in the outside promotion, and then utilizes the declutch shift shaft to drive outer shift fork and produces the axial rotation, and then monitors the plug through-state in the cementing head through surveing outer shift fork, realizes good indicating effect.
Description
Technical Field
The utility model belongs to the technical field of the oil auxiliary member, more specifically say, relate to a cementing head plug indicating device and be equipped with this cementing head plug indicating device's integral cementing head.
Background
At present, in the well cementation operation of oil and gas wells such as petroleum and natural gas, in order to meet the higher environmental protection requirement of a well site, during the well cementation construction, the well site adopts clear water to replace slurry, the well head replacement pressure is higher and higher, and in the shale gas well site, the later period of the replacement slurry pressure sometimes reaches nearly 100 MPa, which has higher requirement on the working pressure of a well cementation cement head. The union, the stop pin and other parts of the integral cement head are connected with the cement head body through the thread sealing ring structure, so that the conventional rubber plug indicator structure of the welding cement head is not suitable for the integral cement head, the conventional integral cement head rubber plug indicator is limited by application conditions, the application effect is not ideal, the problems of inaccurate indication and even incapability of indicating frequently occur, the site constructor cannot obtain an accurate signal for passing the rubber plug, and the inconvenience is caused for site construction.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cementing head plug indicating device and be equipped with this cementing head plug indicating device's integral cementing head to solve the technical problem that the plug indicator that exists indicates inaccurately among the prior art, influences the construction progress.
In order to achieve the above object, the utility model adopts the following technical scheme: the cement head rubber plug indicating device comprises an indicator body, a shifting fork shaft, a sliding piece and an elastic element; the indicator body is provided with a central hole and is in threaded connection with the outer wall of the cementing head; the shifting fork shaft penetrates through the indicator body along the radial direction of the indicator body, and an inner shifting fork positioned in the central hole and an outer shifting fork positioned outside the indicator body are arranged on the shifting fork shaft; the sliding part is arranged in the central hole and is in sliding fit with the indicator body, one end of the sliding part, which is close to the inside of the cementing head, is provided with an arc part for being in sliding fit with the well cementation rubber plug, and the other end of the sliding part is provided with a pushing part for pushing the inner shifting fork to rotate; the elastic element is arranged between the indicator body and the sliding piece and is used for pushing the sliding piece to one side of the cementing head.
As further optimization, the periphery of the sliding part is provided with a cross spline, and the indicator body is internally provided with a cross key groove matched with the cross spline.
As a further optimization, the inner end of the indicator body is provided with a stepped hole for accommodating the elastic element, the periphery of the sliding piece is provided with a baffle for abutting against the end part of the elastic element, and the inner wall of the indicator body is further provided with a limit retainer ring for abutting against the outer end face of the baffle.
As a further optimization, the inner shifting fork and the outer shifting fork extend along the same radial direction of the shifting fork shaft, and the indicator body is provided with an identification point for indicating the position of the outer shifting fork.
As a further optimization, the shifting fork shaft is provided with a threaded hole along the radial direction, the outer wall of the inner shifting fork is provided with an external thread, and the inner shifting fork is in threaded connection with the shifting fork shaft.
As a further optimization, the outer shifting fork is a plate-shaped component sleeved on the periphery of the shifting fork shaft, and an elastic retainer ring used for limiting the outer end face of the outer shifting fork is sleeved on the shifting fork shaft.
As a further optimization, two first sealing rings which are respectively positioned at two sides of the central hole are arranged between the shifting fork shaft and the indicator body.
As a further optimization, the outer periphery of the indicator body is provided with an anti-loose ring for abutting against the sidewall of the cementing head.
As further optimization, the indicator body is further provided with a plug which is used for plugging the outer end of the central hole and is in threaded connection with the indicator body, and a second sealing ring is arranged between the plug and the indicator body.
An integral cementing head is provided with a cementing head rubber plug indicating device.
The utility model provides a cementing head plug indicating device's beneficial effect lies in: the utility model provides a cementing head plug indicating device, the well cementation plug that moves down in the cementing head with set up in the contact of the inner arc portion of slider, can utilize the promotion portion of slider outer end to promote interior shift fork to the outside, it is rotatory around its axis to drive the declutch shift shaft, and then utilize the declutch shift shaft to drive outer shift fork and produce the axial and rotate, and then through observing plug through-state in the outer shift fork monitors the cementing head, realize good indicating effect
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic cross-sectional structural view of an integral cementing head provided with the cementing head rubber plug indicating device according to an embodiment of the present invention;
fig. 2 is a schematic front sectional view of a cementing head rubber plug indicating device provided in fig. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of A-A in FIG. 2;
FIG. 4 is a schematic diagram of the right side view of FIG. 3;
FIG. 5 is a schematic view of the slider of FIG. 2;
fig. 6 is a schematic partial sectional structural view of a sliding member according to a second embodiment of the present invention;
fig. 7 is a schematic partial sectional structural view of a slider according to a third embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100. an indicator body; 110. a central bore; 120. a stepped bore; 130. an anti-loosening ring; 140. plugging with a thread; 141. a second seal ring; 200. a fork shaft; 210. an inner shifting fork; 211. a first seal ring; 220. an outer shifting fork; 300. a slider; 310. an arc-shaped portion; 320. a pushing part; 330. a baffle plate; 340. a limit retainer ring; 350. an annular seal ring; 400. an elastic element; 610. a cementing head; 620. a well cementation rubber plug; 630. and (4) a stop pin.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, the cement head rubber plug indicating device and the integral cement head with the same provided by the present invention will be described. The cementing head rubber plug indicating device comprises an indicator body 100, a shifting fork shaft 200, a sliding piece 300 and an elastic element 400; the indicator body 100 is provided with a central hole 110 and is in threaded connection with the outer wall of the cementing head 610, and the indicator body 100; the fork shaft 200 penetrates through the indicator body 100 along the radial direction of the indicator body 100, and an inner fork 210 positioned in the central hole 110 and an outer fork 220 positioned outside the indicator body 100 are arranged on the fork shaft 200; the sliding piece 300 is arranged in the central hole 110 and is in sliding fit with the indicator body 100, one end of the sliding piece 300, which is close to the inside of the cementing head 610, is provided with an arc-shaped part 310 which is used for being in sliding fit with the cementing plug 620, and the lower part of the other end is provided with a pushing part 320 which extends outwards and is used for pushing the inner shifting fork 210 to rotate; the elastic member 400 is disposed between the indicator body 100 and the slider 300 and is used for pushing the slider 300 toward the cementing head 610 side. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In this embodiment, the outer end of the slider 300 refers to the end of the slider 300 remote from the cementing head 610, and the inner end of the slider 300 refers to the end of the slider 300 near the cementing head 610.
The utility model provides a pair of cement head plug indicating device, compared with the prior art, the utility model provides a cement head plug indicating device, the well cementation plug 620 that moves down in the cement head 610 with set up in the contact of the arc portion 310 of slider 300 the inner, can utilize the 320 interior shift fork 210 of pushing away to the outside of pushing away of slider 300 outer end to drive declutch shift shaft 200, make it rotatory around the axis, and then utilize declutch shift shaft 200 to drive outer shift fork 220 and produce the axial rotation, the state that the plug passes through in monitoring cement head 610 through the rotation of observing the outer shift fork 220 that is located indicator body 100 outside, realize good indicating effect.
In this embodiment, the indicator body 100 is installed outside the cementing head 610 and is in threaded connection with the cementing head 610, and an annular sealing ring 350 is further disposed between one end of the indicator body 100 close to the cementing head 610 and the cementing head 610, so as to achieve the sealing performance between the indicator body 100 and the cementing head 610, and ensure a good sealing effect, a main shaft of the indicator body 100 is perpendicular to the main shaft of the cementing head 610, and the sliding member 300 is disposed in the central hole 110 of the indicator body 100 and can slide along the axial direction of the indicator body 100. In a normal state, the arc portion 310 at the inner end of the slider 300 extends to the inside of the pipe body of the cementing head 610, and when the cementing plug 620 moves downwards, downward pressure is applied to the arc part 310, since the arc part 310 has a curvature convex toward the cement head 610 side, a component force is formed downward and toward the outer end of the slider 300 at the contact of the arc portion 310 and the cementing plug 620, and the slider 300 moves toward the outer end of the indicator body 100 under the action of the component force, the inner fork 210 and the fork shaft 200 are pushed to rotate about the axis by the pushing portion 320 of the other end of the slider 300, the pushing portion 320 is provided at the lower portion of the outer end of the slider 300 in order to push the inner fork 210 to move, the problem that the sliding part 300 is blocked from sliding due to position interference between the sliding part 300 and the fork shaft 200 is solved, at the moment, the outer shifting fork 220 also rotates along with the fork shaft 200 in the same direction, and people monitor the action of the cementing plug 620 in the cementing head 610 by observing the outer shifting fork 220.
Referring to fig. 6 to 7, the arc portion 310 may be respectively configured to have a form of an inclined plane or a form of a convex arc upward to a side, and both can move to a side away from the cementing head 610 when being pressed by the cementing plug 620, so as to realize a pushing effect of the pushing portion 320 on the inner shifting fork 210.
Further, the end surface of the sliding member 300 adjacent to the pushing portion 320 may be gradually inclined downward from the side far from the pushing portion 320 to the side close to the pushing portion 320, so as to effectively avoid the shift fork shaft 200, and the inner shift fork 210 drives the shift fork shaft 200 to rotate smoothly.
Since the pushing portion 320 has a tendency to be inclined downward, the lower portion of the pushing portion 320 has a heavy weight, and the end of the lower portion extending outward is stably located downward by its gravity, so that the slider 300 does not rotate in its axial direction. In order to better ensure that the slider 300 does not rotate in the circumferential direction, the slider 300 may be configured as a non-circular member having a rectangular shape, a trapezoidal shape, or the like, so as to ensure that the outermost end portion of the pushing portion 320 having the inclination angle is stably located below, and so as to correspond to the lower end of the initial position of the inner fork 210. In addition, when the sliding member 300 is a cylindrical member, the circumferential position of the sliding member 300 can be stabilized by providing the key grooves arranged along the axial direction on the outer periphery of the sliding member, so that the problem that the sliding member 300 rotates around the axis of the sliding member when moving along the axial direction of the indicator body 100 is avoided, the end of the pushing portion 320 and the inner fork 210 are located at the same horizontal position, and the pushing effect on the inner fork 210 is achieved.
The elastic element 400 is disposed between the indicator body 100 and the slider 300, may be located on the inner wall of the central hole 110 and connected to the outer end of the pushing portion 320, and may also be disposed between the arc portion 310 and the inner end surface of the indicator body 100, and is used for pushing the slider 300 to one side of the central hole 110, so that the arc portion 310 at the inner end of the slider 300 is located inside the cementing head 610, and can extrude with the arc portion 310 when the cementing plug 620 passes through, thereby achieving the horizontal movement of the slider 300.
Referring to fig. 2 and 5, as a specific embodiment of the cement head rubber plug indicating device provided by the present invention, a cross spline is disposed on the periphery of the sliding member 300, and a cross key slot for matching with the cross spline is disposed in the indicator body 100. In this embodiment, in order to avoid slider 300 to take place to rotate around the circumference of self axis when the axial displacement of indicator body 100, lay in the periphery of slider 300 and set up along the axial to the cross spline, the corresponding sets up the cross keyway in indicator body 100, realize the restriction to the circumferential position of indicator body 100 and slider 300 through the cooperation of cross keyway and cross spline, guarantee the circumferential stability of the two, avoid taking place the relative rotation of circumference, guarantee the position corresponding relation of pushing part 320 and interior shift fork 210.
Referring to fig. 1 to 2, as a specific embodiment of the cement head rubber plug indicating device provided by the present invention, a stepped hole 120 for accommodating an elastic element 400 is disposed at an inner end of the indicator body 100, a baffle 330 for abutting against an end of the elastic element 400 is disposed at an outer periphery of the slider 300, and a limit stop ring 340 for abutting against an outer end surface of the baffle 330 is further disposed on an inner wall of the indicator body 100. The stepped hole 120 is used for accommodating the elastic element 400, the outer end of the elastic element 400 is fixedly connected with the outer end face of the stepped hole 120, the inner end of the elastic element 400 can be connected with or disconnected from the baffle 330 on the sliding part 300, the abutting effect of the inner end of the elastic element 400 on the baffle 330 can be achieved, the baffle 330 is pushed to further push the sliding part 300 and the arc-shaped part 310 to extend into the cement head 610, and the movement of the well cementation rubber plug 620 is judged conveniently through the movement of the arc-shaped part 310.
Referring to fig. 2 to 4, as a specific embodiment of the cementing head rubber plug indicating device provided by the present invention, the inner fork 210 and the outer fork 220 extend along the same radial direction of the fork shaft 200, and the indicator body 100 is provided with a mark point for indicating the position of the outer fork 220. When pushing portion 320 promotes interior shift fork 210 and rotates around declutch shift shaft 200, synchronous rotation also takes place for the outside outer shift fork 220 of indicator body 100, for the convenience of the rotation change of clear observation outer shift fork 220, the position that corresponds outer shift fork 220 in the outside of indicator body 100 can set up the mark point, mark "on" in the initial position mark of outer shift fork 220 in this embodiment, end position mark "off" that it rotated to, and then improve the convenience that the staff utilized outer shift fork 220 to monitor the position of well cementation plug 620.
Referring to fig. 2 to 3, as a specific embodiment of the cement plug indicator of the present invention, a radial threaded hole is formed on the fork shaft 200, an external thread is formed on the outer wall of the inner fork 210, and the inner fork 210 is in threaded connection with the fork shaft 200. Interior shift fork 210 is connected through the screw with shifting fork axle 200, and interior shift fork 210 sets up along shifting fork axle 200's radial, and the accurate rotatory action that takes place the circumferencial direction of drive shifting fork axle 200 of being convenient for.
Referring to fig. 3 to 4, as a specific embodiment of the cement plug indicator of the present invention, the outer fork 220 is a plate-shaped member sleeved on the outer periphery of the fork shaft 200, and the fork shaft 200 is sleeved with an elastic collar for limiting the outer end surface of the outer fork 220. The outer shifting fork 220 is sleeved on the periphery of the shifting fork shaft 200, and the contact part of the outer shifting fork 220 and the shifting fork shaft 200 can adopt various non-circular cross-sectional forms such as a rectangular cross section, a triangular cross section, a trapezoidal cross section, a polygonal cross section and the like, so that the driving effect of the shifting fork shaft 200 on the outer shifting fork 220 can be realized.
Referring to fig. 1 to 3, as a specific embodiment of the cement plug indicating device of the present invention, two first sealing rings 211 are disposed between the fork shaft 200 and the indicator body 100 and located at two sides of the central hole 110 respectively. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The first sealing ring 211 between the fork shaft 200 and the indicator body 100 can ensure good sealing performance between the indicator body 100 and the outside. In addition, the plug 140 disposed on the indicator body 100 effectively plugs the outer end of the central hole 110, and the second sealing ring 141 achieves a sealing effect between the plug 140 and the indicator body 100, so that the indicator body 100 is effectively isolated from the external environment.
Referring to fig. 1 to 2, as an embodiment of the cementing head rubber plug indicating device of the present invention, a locking ring 130 for abutting against a sidewall of a cementing head 610 is disposed at an outer periphery of the indicator body 100. The setting of locking collar 130 can effectually guarantee that indicator body 100 can not drop from the lateral wall of cement head 610, locking collar 130 is equipped with the internal thread, indicator body 100 includes that inner and cement head 610 threaded connection just are equipped with the part of external screw thread and the part that the outside is used for installing declutch shift shaft 200, locking collar 130 sets up the one side that is equipped with the external screw thread on indicator body 100, and the interior terminal surface of locking collar 130 and the outer wall looks butt of cement head 610, avoid the pine of indicator body 100 and cement head 610 threaded connection to take off.
An integral cementing head 610 is provided with a cementing head rubber plug indicating device. Be equipped with the cementing head plug indicating device who is used for monitoring well cementation plug 620 and passes through on this integral cementing head 610's the lateral wall, when opening backing pin 630, well cementation plug 620 moves down to the position with arc portion 310 contact, drives slider 300 level through extrusion arc portion 310 and moves to the outside, realizes the pushing effect of pushing part 320 to inside shift fork 210, and then drives the rotation of the outside outer shift fork 220 of indicator body 100, the staff's of being convenient for real-time supervision.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Cementing head plug indicating device, its characterized in that: comprises that
The indicator body is provided with a central hole and is in threaded connection with the outer wall of the cementing head;
the shifting fork shaft penetrates through the indicator body along the radial direction of the indicator body, and an inner shifting fork positioned in the central hole and an outer shifting fork positioned outside the indicator body are arranged on the shifting fork shaft;
the sliding part is arranged in the central hole and is in sliding fit with the indicator body, one end of the sliding part, which is close to the inside of the cementing head, is provided with an arc-shaped part which is used for being in sliding fit with a well cementation rubber plug, and the other end of the sliding part is provided with a pushing part which extends outwards and is used for pushing the inner shifting fork to rotate;
and the elastic element is arranged between the indicator body and the sliding piece and is used for pushing the sliding piece to one side of the cementing head.
2. The cementing-head rubber plug indicating device of claim 1, wherein: the periphery of slider is equipped with the cross spline, this internal being equipped with of indicator is used for with cross spline matched with cross keyway.
3. The cementing-head rubber plug indicating device of claim 1, wherein: the inner end of the indicator body is provided with a stepped hole for containing the elastic element, the periphery of the sliding piece is provided with a baffle for abutting against the end part of the elastic element, and the inner wall of the indicator body is further provided with a limiting retainer ring for abutting against the outer end face of the baffle.
4. The cementing-head rubber plug indicating device of claim 1, wherein: the inner shifting fork and the outer shifting fork extend along the same radial direction of the shifting fork shaft, and the indicator body is provided with an identification point for indicating the position of the outer shifting fork.
5. The cementing-head rubber plug indicating device of claim 4, wherein: the shifting fork shaft is provided with a threaded hole along the radial direction, the outer wall of the inner shifting fork is provided with an external thread, and the inner shifting fork is in threaded connection with the shifting fork shaft.
6. The cementing-head rubber plug indicating device of claim 4, wherein: the outer shifting fork is a plate-shaped component sleeved on the periphery of the shifting fork shaft, and an elastic retainer ring used for limiting the outer end face of the outer shifting fork is sleeved on the shifting fork shaft.
7. The cementing-head rubber plug indicating device of claim 1, wherein: two first sealing rings which are respectively positioned at two sides of the central hole are arranged between the shifting fork shaft and the indicator body.
8. The cementing-head rubber plug indicating device of claim 1, wherein: the periphery of the indicator body is provided with an anti-loosening ring which is used for being abutted to the side wall of the cementing head.
9. The cementing-head rubber plug indicating device of claim 1, wherein: the indicator body is further provided with a plug which is used for plugging the outer end of the central hole and is in threaded connection with the indicator body, and a second sealing ring is arranged between the plug and the indicator body.
10. An integral cementing head provided with a cementing head rubber plug indicating device according to any one of the claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384764.XU CN210422563U (en) | 2019-08-23 | 2019-08-23 | Cementing head rubber plug indicating device and integral cementing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921384764.XU CN210422563U (en) | 2019-08-23 | 2019-08-23 | Cementing head rubber plug indicating device and integral cementing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422563U true CN210422563U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921384764.XU Active CN210422563U (en) | 2019-08-23 | 2019-08-23 | Cementing head rubber plug indicating device and integral cementing head |
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| Country | Link |
|---|---|
| CN (1) | CN210422563U (en) |
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2019
- 2019-08-23 CN CN201921384764.XU patent/CN210422563U/en active Active
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