CN212927824U - Underwater wellhead levelness measuring device - Google Patents
Underwater wellhead levelness measuring device Download PDFInfo
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- CN212927824U CN212927824U CN202021615166.1U CN202021615166U CN212927824U CN 212927824 U CN212927824 U CN 212927824U CN 202021615166 U CN202021615166 U CN 202021615166U CN 212927824 U CN212927824 U CN 212927824U
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Abstract
The utility model relates to an underwater wellhead levelness measuring device, including installing the fixed establishment on the tubular column, with the locating plate that fixed establishment connects, be equipped with on the locating plate and be used for supplying the base on which the spirit level is installed, and with the edge connection of locating plate, enclose and locate the spirit level periphery just extends to bounding wall on the fixed establishment. The device simple structure, the spirit level setting is confirmed in order to carry out underwater wellhead levelness on the base, and it is simple and convenient to go into the recovery procedure.
Description
Technical Field
The utility model relates to an offshore oil gas field exploration and development field especially relate to underwater well head levelness measuring device.
Background
The underwater wellhead is used as a bridge between an oil-gas well and a blowout preventer, bears dynamic loads from environment, riser connection, platform movement and the like, and static loads from casing weight, tensioner tension and the like, and plays an important role in the ocean oil-gas development process, so that the levelness of the underwater wellhead is generally required to be less than 1 degree when the underwater wellhead is used for developing deepwater oil-gas fields.
The conventional method comprises the following steps: (1) after drilling a 36' well, positioning a drilling guide base plate on a round well deck movable door in advance; (2) the drilling platform utilizes a sending tool to lower the 30 ' low-pressure wellhead head into the drilling guide base plate, then the drilling guide base plate is locked to the 30 ' low-pressure wellhead head through a pin shaft, and the drilling guide base plate is lowered into the seabed along with the 30 ' low-pressure wellhead head; (3) before well cementation, the levelness of an underwater wellhead is confirmed by using a level gauge installed on a drilling guide base plate, and the levelness of the wellhead meets the design requirements through an up-down movable pipe string; (4) after the well cementation is solidified, opening a feeding tool of the low-pressure wellhead under water, and lifting the feeding tool out of the rotary table surface; (5) and (3) utilizing a drill rod to go into a drilling guide base plate recovery tool, lifting by 60-150 klbs for releasing, and then recovering to a garden deck movable door for detaching and throwing.
In the implementation process, the well head levelness is adjusted and confirmed by utilizing the mode that the drilling guide base plate is additionally provided with the gradienter, and the following problems exist: (1) the drilling guide base plate is complicated in running and recovering operation procedure, and the drilling machine occupies long time; (2) 60-150 klbs needs to be lifted in the process of releasing the drilling guide base plate, and high risks such as impact of the top-pushing driving compensator on the drill rod and the drilling guide base plate on a low-pressure wellhead at the moment of releasing exist.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing an underwater wellhead levelness measuring device.
The utility model provides a technical scheme that its technical problem adopted is: the device comprises a fixing mechanism arranged on a pipe column and a positioning plate connected with the fixing mechanism, wherein a base used for installing a level meter on the positioning plate is arranged on the positioning plate, and the edge of the positioning plate is connected with and surrounded by a surrounding plate on the fixing mechanism.
Preferably, the base is of a cylindrical structure.
Preferably, three adjustable screws for fixing and calibrating the level gauge are uniformly distributed on the upper surface of the base at intervals of 120 degrees.
Preferably, the lower part of the positioning plate is also provided with a supporting rib plate for fixedly supporting the positioning plate.
Preferably, the supporting rib plate is of a triangular flat plate structure, a first right-angle side of the supporting rib plate is connected with the bottom of the positioning plate, and a second right-angle side of the supporting rib plate is connected with the fixing mechanism.
Preferably, the supporting rib plates are symmetrically arranged in pairs.
Preferably, the fixing mechanism is characterized by comprising a first clamping plate, a second clamping plate and a connecting piece, wherein the first clamping plate and the second clamping plate are semicircular;
the first clamping plate is in butt joint with the second clamping plate, and the connecting piece is arranged between the first clamping plate and the second clamping plate in a penetrating and locking mode.
Preferably, the butt ends of the first clamping plate and the second clamping plate are respectively provided with a first connecting lug and a second connecting lug which extend outwards in the radial direction;
the first connecting lug is attached to the second connecting lug oppositely, and the connecting piece is arranged between the first connecting lug and the second connecting lug in a penetrating and locking mode.
Preferably, the periphery of the pipe column is provided with a positioning groove;
the second clamping plate is provided with a positioning hole matched with the positioning groove;
the positioning pin penetrates through the positioning hole and is positioned in the positioning groove to assist in fixing the underwater wellhead levelness measuring device.
Preferably, the connecting member comprises a fastening bolt.
Implement the utility model discloses following beneficial effect has: this underwater wellhead levelness measuring device, including installing the fixed establishment on the tubular column, with the locating plate that fixed establishment connects, be equipped with on the locating plate and be used for supplying the base that the spirit level was installed on it, the spirit level setting is confirmed in order to carry out underwater wellhead levelness on the base, and the device simple structure puts into recovery procedure portably.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic structural diagram of the underwater wellhead levelness measuring device of the present invention;
fig. 2 is the utility model discloses underwater wellhead levelness measuring device's structure side schematic diagram.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, it is a device for measuring levelness of underwater wellhead, including installing fixed establishment 1 on the tubular column, locating plate 2 connected with fixed establishment 1 is equipped with the base 3 that is used for supplying the spirit level to install on locating plate 2 to and with the edge connection of locating plate 2, enclose and locate the spirit level periphery and extend to bounding wall 4 on fixed establishment 1. The tubular string includes a drill pipe or running tool sub.
In this embodiment, the positioning plate 2 is a flat plate structure, the cross section of which may be a drop shape, the base 3 is disposed on the positioning plate 2, the base 3 is substantially a cylinder structure, the cross section of which is a circle, of course, the structure of the base 3 may also be other flat plate structures, and the structure, the size, and the like of which may be properly adjusted, and this is not limited specifically here.
The base 3 is provided with a level gauge, the coaming 4 is arranged at the edge of the positioning plate and extends upwards, and is positioned on the level gauge or the periphery of the base 3 and extends to the fixing mechanism 1. In some embodiments, the shroud 4 is comparable to the level thickness and diameter.
Further, a plurality of adjustable screws 31 are disposed on the base 3, and as a preferred embodiment, three adjustable screws 31 for fixing and calibrating the level gauge are uniformly disposed on the upper surface of the base 3 at an interval of 120 °. This adjustable screw 31 is close to 3 edge sides of base and sets up, and is further equipped with the first spiro union hole of several on this base 3, and correspondingly, be equipped with the several second spiro union hole on this spirit level, this adjustable screw 31 wears to locate this second level spiro union hole and first spiro union hole in order to fix the spirit level to base 3 on, this adjustable screw 31 is used for fixed spirit level on the one hand, and on the other hand is used for subaerial calibration spirit level, because base 3 can not be smooth completely, or has the deviation in the installation and need proper adjustment.
The positioning plate 2 can be provided with a through hole which avoids the base 3.
Furthermore, the lower part of the positioning plate 2 is also provided with a supporting rib plate 5 for fixing and supporting the positioning plate 2, the supporting rib plate 5 is of a triangular flat plate structure, a first right-angle side of the supporting rib plate is connected with the bottom of the positioning plate 2, and a second right-angle side of the supporting rib plate is connected with the fixing mechanism 1.
The supporting rib plates 5 are a pair of symmetrically arranged supporting rib plates, that is, the pair of symmetrically arranged supporting rib plates includes a first supporting rib plate and a second supporting rib plate, and of course, other numbers may be provided, which is not limited specifically here.
Further, the fixing mechanism 1 comprises a semicircular first clamping plate 11, a semicircular second clamping plate 12 and a connecting piece, the first clamping plate 11 is in butt joint with the second clamping plate 12, and the connecting piece is arranged between the first clamping plate and the second clamping plate in a penetrating mode and locked.
Furthermore, the first clamping plate 11 is provided with a first connecting lug 111 and a first connecting lug 112 extending radially outward at the butt end, and the second clamping plate 12 is provided with a second connecting lug 121 and a second connecting lug 122 extending radially outward at the butt end. The connecting member includes a first connecting member 13 and a second connecting member 14.
The first connecting lugs 111 and 112 are relatively attached to the second connecting lugs 121 and 122, and the connecting members 13 and 14 are inserted and locked between the first connecting lugs 111 and 112 and the second connecting lugs 121 and 122.
The first engaging lug 111 is attached to the second engaging lug 121, and the first connecting member 13 is inserted and locked between the first engaging lug 111 and the second engaging lug 121.
The first engaging lug 112 and the second engaging lug 122 are attached to each other relatively, the second connecting member 14 is inserted and locked between the first engaging lug 112 and the second engaging lug 122, so as to lock the first clamping plate 11 and the second clamping plate 12 together, the connecting member 13 and the second connecting member 14 include a fastening bolt, of course, a screw, a cylindrical pin and the like, and the first engaging lug 111, the first engaging lug 112, the second engaging lug 121 and the second engaging lug 122 are correspondingly arranged on the mounting through hole. Further, the connecting member may have a plurality of pairs, as shown in fig. 2, the second connecting member 14 includes three connecting members arranged at intervals, including a second connecting member 141, a second connecting member 142, and a second connecting member 143, and correspondingly, the first connecting member 13 includes a plurality of connecting members, thereby improving the locking effect. As can be appreciated, the first clamping plate 11 and the second clamping plate 12 can form a seamless encircling with the pipe string (including the drill pipe running tool short joint) through fastening bolt connection
The positioning plate 2 and the surrounding plate 5 are connected to the first clamping plate 11, and further, the surrounding plate 5 is connected to the first connecting lug 111 and the end of the first connecting lug 112 away from the first clamping plate 11.
Further, the tubular column periphery is equipped with the constant head tank, is equipped with on the second splint 12 with constant head tank matched with locating hole, and the device still includes the locating pin, and the locating pin is worn to locate the locating hole and is located the constant head tank in order to assist fixed underwater wellhead levelness measuring device, and the district rivers that prevent splashing impact underwater wellhead levelness measuring device and arouse the rotation, lead to the spirit level reading to have the deviation. Further, the positioning hole may be disposed at a central position of the second clamping plate 12.
During the actual operation, send into the external underwater wellhead levelness measuring device that binds of instrument upper portion nipple joint at the low pressure wellhead head, send the low pressure wellhead head back in place down, carry out the underwater wellhead levelness through the spirit level of installing on the underwater wellhead levelness measuring device and confirm, treat that the cementing waits to condense the back, open the oral instrument of low pressure wellhead under water and send into the instrument, will the underwater wellhead levelness measuring device and send into the instrument along with the low pressure wellhead head and play the turnplate face one time.
The underwater wellhead levelness measuring device is simple in structure and accurate in measuring and recording, the underwater wellhead levelness measuring device can be used for feeding the tool into the tool along with the low-pressure wellhead head to play a rotary disk surface once, and a recovery procedure is simple and convenient to run.
It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The utility model provides an underwater wellhead levelness measuring device, its characterized in that, including installing fixed establishment (1) on the tubular column, with locating plate (2) that fixed establishment (1) is connected, be equipped with on locating plate (2) and be used for supplying base (3) on the spirit level installation, and with the edge connection of locating plate (2), enclose and locate the spirit level periphery just extends to bounding wall (4) on fixed establishment (1).
2. A subsea wellhead levelness measuring device according to claim 1, characterised in that the base (3) is of cylindrical construction.
3. An underwater wellhead levelness measuring device according to claim 1, characterised in that three adjustable screws (31) for fixing and calibrating the level are evenly distributed on the upper surface of the base (3) at intervals of 120 °.
4. The underwater wellhead levelness measuring device according to claim 1, wherein a support rib plate (5) for fixedly supporting the positioning plate (2) is further arranged at the lower part of the positioning plate (2).
5. The underwater wellhead levelness measuring device according to claim 4, wherein the supporting rib plate (5) is of a triangular flat plate structure, a first right-angle side of the supporting rib plate is connected with the bottom of the positioning plate (2), and a second right-angle side of the supporting rib plate is connected with the fixing mechanism (1).
6. The underwater wellhead levelness measuring device according to claim 4, wherein the support rib plates (5) are a pair which are symmetrically arranged.
7. A subsea wellhead levelness measuring device according to claim 1, characterised in that the securing means (1) comprises a first clamp plate (11), a second clamp plate (12) in the shape of a semi-circle, and a connecting piece (13, 14);
the first clamping plate (11) is in butt joint with the second clamping plate (12), and the connecting pieces (13 and 14) are arranged between the first clamping plate and the second clamping plate in a penetrating and locking mode.
8. A subsea wellhead levelness measuring device according to claim 7, characterised in that the abutting ends of the first clamp plate (11) and the second clamp plate (12) are provided with first (111, 112) and second (121, 122) lugs, respectively, extending radially outwards;
the first connecting lugs (111, 112) are attached to the second connecting lugs (121, 122) relatively, and the connecting pieces (13, 14) are arranged between the first connecting lugs (111, 112) and the second connecting lugs (121, 122) in a penetrating and locking mode.
9. The subsea wellhead levelness measuring device of claim 7, wherein the tubing string is provided with a locating groove on its periphery;
the second clamping plate (12) is provided with a positioning hole matched with the positioning groove;
the positioning pin penetrates through the positioning hole and is positioned in the positioning groove to assist in fixing the underwater wellhead levelness measuring device.
10. The subsea wellhead levelness measurement device of claim 7, wherein the connections comprise fastening bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021615166.1U CN212927824U (en) | 2020-08-05 | 2020-08-05 | Underwater wellhead levelness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021615166.1U CN212927824U (en) | 2020-08-05 | 2020-08-05 | Underwater wellhead levelness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212927824U true CN212927824U (en) | 2021-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021615166.1U Active CN212927824U (en) | 2020-08-05 | 2020-08-05 | Underwater wellhead levelness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212927824U (en) |
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2020
- 2020-08-05 CN CN202021615166.1U patent/CN212927824U/en active Active
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