CN220118091U - Antifreezing blowout preventer for oilfield test - Google Patents
Antifreezing blowout preventer for oilfield test Download PDFInfo
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- CN220118091U CN220118091U CN202320934839.7U CN202320934839U CN220118091U CN 220118091 U CN220118091 U CN 220118091U CN 202320934839 U CN202320934839 U CN 202320934839U CN 220118091 U CN220118091 U CN 220118091U
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- blowout preventer
- connecting pipe
- preventer body
- cavity
- hollow
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- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 18
- 238000003032 molecular docking Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000002528 anti-freeze Effects 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 208000001034 Frostbite Diseases 0.000 claims description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 claims 1
- 238000007710 freezing Methods 0.000 abstract description 19
- 239000002283 diesel fuel Substances 0.000 abstract description 9
- 230000008014 freezing Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract description 2
- 239000002689 soil Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003921 oil Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 244000261422 Lysimachia clethroides Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses an antifreezing blowout preventer for oilfield testing, which relates to the technical field of wellhead blowout preventers for soil horizon or rock drilling, and comprises a blowout preventer body, wherein a lubricator is transversely arranged on the blowout preventer body, a cavity of the lubricator is communicated with an inner cavity of the blowout preventer body, and a connecting valve is arranged at one end of the lubricator, which is far away from the blowout preventer body; when the anti-freezing device is used, diesel oil is injected into the inner cavity of the blowout preventer body through the connecting valve, so that the diesel oil is filled in the blowout preventer body, meanwhile, residual liquid in the blowout preventer body is discharged, the anti-freezing purpose of the blowout preventer is achieved by means of the characteristic that the freezing point of the diesel oil is low, and the test instrument is convenient to put in and take out. Compared with the prior art, the utility model has the advantages of simple structure, low manufacturing cost, time and labor saving and high freezing prevention efficiency because no power supply circuit is paved and no complex conveying structure is needed.
Description
Technical Field
The utility model relates to a wellhead blowout preventer for drilling soil layers or rocks, in particular to an antifreezing blowout preventer for oilfield testing.
Background
In the production and development stage of oil field, it is known that the oil-water well needs to be dynamically monitored, mainly by using logging and well testing methods to directly or indirectly measure the geological parameters, production parameters, downhole technical conditions and dynamic change conditions of various parameters related to the oil-water well, and comprehensively judge the production dynamics of the oil-water well.
When the oil-water well is tested, in order to ensure that the testing instrument can be smoothly put in and taken out of a pressurized wellhead, a wellhead blowout preventer needs to be installed, and when the oil-water well is tested and constructed for a long time under the condition of lower ambient temperature, high-pressure liquid in the well enters the conventional blowout preventer to be frozen and solidified, so that the testing instrument cannot go down or go up, and the dynamic monitoring work of an oil reservoir cannot be successfully implemented.
The electric heating antifreezing device of the blowout preventer is disclosed in the Chinese patent application with the application number of 201610814152.4, wherein silicon rubber low-power electric heating plates are covered on two sides of the blowout preventer, and the blowout preventer is prevented from freezing and insulating in a mode that an inner heating plate heats and raises the temperature and an outer silicon rubber foaming sponge covers and insulates the temperature, so that the normal safe operation of the blowout preventer is ensured.
The utility model also discloses a wellhead area antifreezing device in China patent application No. 200920246490.8, which comprises an antifreezing fluid tank, an antifreezing fluid delivery pump, a marine riser, a blowout preventer stack and a plurality of pipelines, wherein the antifreezing fluid tank is arranged on a main deck of a platform and is connected with the input end of the antifreezing fluid delivery pump through an antifreezing fluid filling pipe, the output end of the antifreezing fluid delivery pump is connected with an antifreezing fluid injection pipe, and the antifreezing fluid injection pipe is connected with a gooseneck bend at the upper part of the marine riser through a pipeline; the anti-freezing liquid conveying pipeline which is communicated with the gooseneck bend and the anti-freezing liquid conveying pipeline of the terminal pipe joint of the water isolation pipe is arranged on the water isolation pipe, the terminal pipe joint of the water isolation pipe is connected with the anti-freezing liquid conveying pipeline of the blowout preventer stack through the pipeline, and the other end of the anti-freezing liquid conveying pipeline of the blowout preventer stack is connected with the drill rod flashboard of the blowout preventer stack, so that the effect of preventing well control equipment from freezing is realized.
The Chinese patent application No. 201120221615.9 discloses an electromagnetic heating and heat-preserving device of a blowout preventer, which comprises a detachable heat-preserving shell, wherein an electromagnetic heating plate is arranged on the heat-preserving shell, the inner cavity of the heat-preserving shell can accommodate the blowout preventer, and the electromagnetic heating plate is contacted with the blowout preventer after the heat-preserving shell is arranged outside the blowout preventer; an electromagnetic induction coil is arranged in the electromagnetic heating plate, the electromagnetic heating plate is also provided with an electromagnetic wire and an explosion-proof plug, the electromagnetic induction coil is connected with a high-frequency current generator, and the problem of freezing out of the blowout preventer is solved by heating and heat-preserving the blowout preventer.
The technical scheme, the technical problems to be solved and the generated beneficial effects of the disclosed technology are different from those of the utility model, or the technical field or application occasion is different, and the technical documents disclosed above have no technical teaching aiming at more technical features, the technical problems to be solved and the beneficial effects of the utility model.
Disclosure of Invention
In order to overcome among the prior art use the electrical heating board have that the power supply line lays with high costs, use the antifreeze fluid to have the complex not enough of conveying structure, the utility model provides a simple structure, antifreeze efficient, low in manufacturing cost's oil field test is with anti-freezing preventer.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an oil field test is with preventing frostbite preventer, its includes the preventer body the vertical first connecting pipe that is equipped with in top of preventer body the vertical second connecting pipe that is equipped with in bottom of preventer body, the cavity of first connecting pipe, second connecting pipe are linked together with the inner chamber of preventer body, its characterized in that transversely be equipped with the lubricator on the preventer body, the cavity of lubricator is linked together with the inner chamber of preventer body, is equipped with the junction valve in the one end that the blowout preventer body was kept away from to the lubricator.
Preferably, a detachable connection mechanism is arranged between the second connecting pipe and the blowout preventer body, the detachable connection mechanism comprises a hollow positioning shell, a hollow retainer and a fixed sleeve, the hollow positioning shell is arranged at the bottom of the blowout preventer body, a cavity of the hollow positioning shell is communicated with an inner cavity of the blowout preventer body, the hollow retainer is arranged at the top of the second connecting pipe, the cavity of the hollow retainer is communicated with the cavity of the second connecting pipe, the hollow positioning shell and the hollow retainer are axially butted, and the hollow positioning shell and the hollow retainer are sealed and limited by the fixed sleeve.
Preferably, an auxiliary docking mechanism is arranged at the bottom of the second connecting pipe, the auxiliary docking mechanism comprises a connecting nut, a rotating assembly and a plurality of elastic assemblies, the rotating assembly comprises a bearing and a swivel embedded in an inner ring of the bearing, and the connecting nut is axially connected with the swivel; the elastic components comprise sliding sleeves, sliding rods and springs, the sliding sleeves are annularly and uniformly distributed on the outer ring of the bearing, the axial directions of the sliding sleeves are axially parallel to the axial directions of the second connecting pipes, the bottom ends of the sliding rods are slidably arranged in the corresponding sliding sleeves, the top ends of the sliding rods are fixed on the bottom ends of the hollow retainers, and the springs are supported between the corresponding sliding sleeves and the sliding rods; the bottom of the second connecting pipe penetrates through the swivel ring and stretches into the connecting nut, and a sealing ring is arranged in the bottom of the second connecting pipe and the connecting nut.
Preferably, the utility model further comprises a plurality of support rings, wherein the support rings are sleeved on the peripheral surface of the first connecting pipe along the radial direction and the interval direction of the first connecting pipe, and a plurality of support pipes are axially connected between two adjacent support rings.
Preferably, a protective sleeve is sleeved on the outer peripheral surface of the supporting tube.
The blowout preventer comprises a blowout preventer body, wherein a blowout preventer is transversely arranged on the blowout preventer body, a cavity of the blowout preventer is communicated with an inner cavity of the blowout preventer body, and a connecting valve is arranged at one end of the blowout preventer, which is far away from the blowout preventer body; when the anti-freezing device is used, diesel oil is injected into the inner cavity of the blowout preventer body through the connecting valve, so that the diesel oil is filled in the blowout preventer body, meanwhile, residual liquid in the blowout preventer body is discharged, the anti-freezing purpose of the inner cavity of the blowout preventer is achieved by means of the characteristic that the freezing point of the diesel oil is low, and the test instrument can be conveniently put in and taken out. Compared with the prior art, the utility model has the advantages of simple structure, low manufacturing cost, time and labor saving and high freezing prevention efficiency because no power supply circuit is paved and no complex conveying structure is needed.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic perspective view of a detachable connection mechanism and an auxiliary docking mechanism according to the present utility model;
fig. 3 is a schematic perspective view of a rotating assembly and an elastic assembly in the present utility model.
In the figure: 1. blowout preventer body, 2, first connection tube, 3, second connection tube, 4, support ring, 5, support tube, 6, protective sleeve, 7, lubricator, 8, connection valve, 9, seal ring, 10, removable mechanism, 101, hollow positioning shell, 102, hollow retainer, 103, fixed sleeve, 11, auxiliary docking mechanism, 111, connection nut, 112, rotating assembly, 1121, bearing, 1122, swivel, 113, elastic assembly, 1131, sliding sleeve, 1132, sliding rod, 1133, spring.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, an antifreezing blowout preventer for oilfield testing comprises a blowout preventer body 1, wherein a first connecting pipe 2 is vertically arranged at the top of the blowout preventer body 1, a second connecting pipe 3 is vertically arranged at the bottom of the blowout preventer body 1, and cavities of the first connecting pipe 2 and the second connecting pipe 3 are communicated with an inner cavity of the blowout preventer body 1.
As shown in fig. 1, a lubricator 7 is transversely arranged on the blowout preventer body 1, a cavity of the lubricator 7 is communicated with an inner cavity of the blowout preventer body 1, and a connecting valve 8 is arranged at one end of the lubricator 7 away from the blowout preventer body 1. When the anti-freezing blowout preventer is used, diesel oil is injected into the inner cavity of the blowout preventer body 1 through the connecting valve 8, so that the diesel oil fills the blowout preventer body 1, meanwhile, residual liquid in the blowout preventer body 1 is discharged, the anti-freezing purpose of the blowout preventer is realized by means of the characteristic that the freezing point of the diesel oil is low, and the test instrument is convenient to put in and take out.
Example 2
The difference from embodiment 1 is that a detachable connection mechanism 10 is provided between the second connection pipe 3 and the blowout preventer body 1 as shown in fig. 1 and 2.
As shown in fig. 2, the detachable connection mechanism 10 includes a hollow positioning shell 101, a hollow retainer 102 and a fixing sleeve 103, wherein the hollow positioning shell 101 is arranged at the bottom of the blowout preventer body 1, a cavity of the hollow positioning shell is communicated with an inner cavity of the blowout preventer body 1, the hollow retainer 102 is arranged at the top of the second connection pipe 3, a cavity of the hollow retainer 102 is communicated with a cavity of the second connection pipe 3, the hollow positioning shell 101 and the hollow retainer 102 are axially butted, and the hollow retainer is sealed and limited by the fixing sleeve 103.
When the fixing sleeve 103 is used, after being sleeved into the hollow retainer 102, the hollow positioning shell 101 and the hollow retainer 102 are axially abutted, and the sealing limit is tightened when the fixing sleeve 103 is placed at the joint of the hollow positioning shell 101 and the hollow retainer 102. The provision of the releasable connection mechanism 10 facilitates the release of the second connection pipe 3 from the blowout preventer body 1, as compared to conventional fixed connections.
Example 3
In addition to the embodiment 2, as shown in fig. 2 and 3, an auxiliary docking mechanism 11 is provided at the bottom of the second connection pipe 3.
The auxiliary docking mechanism 11 comprises a connecting nut 111, a rotating assembly 112 and a plurality of elastic assemblies 113, wherein the rotating assembly 112 comprises a bearing 1121 and a rotating ring 1122 embedded in the inner ring of the bearing 1121, and the connecting nut 111 is axially connected with the rotating ring 1122; the elastic components 113 comprise sliding sleeves 1131, sliding rods 1132 and springs 1133, the sliding sleeves 1131 are annularly and uniformly distributed on the outer ring of the bearing 1121, the axial directions of the sliding sleeves 1131 are axially parallel to the axial directions of the second connecting pipes 3, the bottom ends of the sliding rods 1132 are slidably arranged in the corresponding sliding sleeves 1131, the top ends of the sliding rods 1132 are fixed on the bottom ends of the hollow retainers 102, and the springs 1133 are supported between the corresponding sliding sleeves 1131 and the sliding rods 1132; the bottom end of the second connection pipe 3 extends into the connection nut 111 through the swivel 1122.
In order to improve the connection tightness between the second connection pipe 3 and the wellhead casing (not shown in the figure), as shown in fig. 2, a sealing ring 9 is provided in the bottom end of the second connection pipe 3 and in the connection nut 111. The connecting nut 111 and the wellhead sleeve are screwed and pre-tightened, and the bottom end of the second connecting pipe 3 and the top end of the wellhead sleeve squeeze the sealing ring 9 under the axial pre-tightening force of the connecting nut 111, so that the sealing ring 9 achieves the backlog sealing purpose of the second connecting pipe and the wellhead sleeve.
The auxiliary docking mechanism 11 increases the degree of freedom of the connecting nut 111, namely, on the basis of meeting the requirement of the axial adjustment of the connecting nut 111 Zhou Xiangxuan, the coaxial adjustment of the connecting nut 111 with the second connecting pipe 3 and the wellhead sleeve can be met, and the condition that the connecting nut 111 is clamped in the rotating process is prevented.
Example 4
The difference from embodiment 1 is that the utility model also comprises several support rings 4 as shown in fig. 1, 2.
As shown in fig. 1, the support rings 4 are sleeved on the outer peripheral surface of the first connecting pipe 2 along the radial direction of the first connecting pipe 2 at intervals, and a plurality of support pipes 5 are axially connected between two adjacent support rings 4.
The support rings 4 and the support tubes 5 are used for structurally supporting and protecting the second connecting tube 3, and the number of the support rings can be set according to practical use requirements, as shown in fig. 1, in this embodiment, six support rings 4 are provided, four support tubes 5 are provided between every two adjacent support rings 4, and twenty support tubes are provided.
In order to reduce the damage to the outer surface of the support tube 5 caused by collision, as shown in fig. 1, a protective sleeve 6 is sleeved on the outer peripheral surface of the support tube 5. In the present utility model, the protective cover 6 is preferably a cushion rubber cover having good wear resistance and elasticity.
Although the above embodiments use fig. 1-3, it will be apparent to those skilled in the art that separate drawings are not provided to illustrate the embodiments, so long as the missing components or structural features are removed from the drawings. As will be clear to a person skilled in the art. Of course, the more components of the embodiment are just the optimal embodiment, the fewer components of the embodiment are basic embodiments, but the basic object of the utility model can be achieved, so all the modified embodiments are within the protection scope of the utility model.
In the utility model, all parts which are not expanded and discussed and the connecting mode of all parts in the utility model belong to the known technology in the technical field, and are not repeated. Such as welding, threaded connections, etc.
In the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides an oil field test is with preventing frostbite preventer, its includes the preventer body the vertical first connecting pipe that is equipped with in top of preventer body the vertical second connecting pipe that is equipped with in bottom of preventer body, the cavity of first connecting pipe, second connecting pipe are linked together with the inner chamber of preventer body, its characterized in that transversely be equipped with the lubricator on the preventer body, the cavity of lubricator is linked together with the inner chamber of preventer body, is equipped with the junction valve in the one end that the blowout preventer body was kept away from to the lubricator.
2. The antifreezing blowout preventer for oilfield testing according to claim 1, wherein a detachable connection mechanism is arranged between the second connecting pipe and the blowout preventer body, the detachable connection mechanism comprises a hollow positioning shell, a hollow retainer and a fixed sleeve, the hollow positioning shell is arranged at the bottom of the blowout preventer body, a cavity of the hollow positioning shell is communicated with an inner cavity of the blowout preventer body, the hollow retainer is arranged at the top of the second connecting pipe, a cavity of the hollow retainer is communicated with the cavity of the second connecting pipe, and the hollow positioning shell and the hollow retainer are axially butted and limited by the fixed sleeve in a sealing manner.
3. The antifreezing blowout preventer for oilfield testing according to claim 2, wherein an auxiliary docking mechanism is arranged at the bottom of the second connecting pipe, the auxiliary docking mechanism comprises a connecting nut, a rotating assembly and a plurality of elastic assemblies, the rotating assembly comprises a bearing and a swivel embedded in an inner ring of the bearing, and the connecting nut is axially connected with the swivel; the elastic components comprise sliding sleeves, sliding rods and springs, the sliding sleeves are annularly and uniformly distributed on the outer ring of the bearing, the axial directions of the sliding sleeves are axially parallel to the axial directions of the second connecting pipes, the bottom ends of the sliding rods are slidably arranged in the corresponding sliding sleeves, the top ends of the sliding rods are fixed on the bottom ends of the hollow retainers, and the springs are supported between the corresponding sliding sleeves and the sliding rods; the bottom of the second connecting pipe penetrates through the swivel ring and stretches into the connecting nut, and a sealing ring is arranged in the bottom of the second connecting pipe and the connecting nut.
4. The anti-freeze blowout preventer for oilfield testing according to claim 1, further comprising a plurality of support rings radially and spacedly sleeved on the outer circumferential surface of the first connecting pipe along the first connecting pipe, and a plurality of support pipes axially connected between two adjacent support rings.
5. The antifreeze blowout preventer for oil field testing according to claim 4, wherein,
and a protective sleeve is sleeved on the outer peripheral surface of the supporting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320934839.7U CN220118091U (en) | 2023-04-24 | 2023-04-24 | Antifreezing blowout preventer for oilfield test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320934839.7U CN220118091U (en) | 2023-04-24 | 2023-04-24 | Antifreezing blowout preventer for oilfield test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220118091U true CN220118091U (en) | 2023-12-01 |
Family
ID=88915390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320934839.7U Active CN220118091U (en) | 2023-04-24 | 2023-04-24 | Antifreezing blowout preventer for oilfield test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220118091U (en) |
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2023
- 2023-04-24 CN CN202320934839.7U patent/CN220118091U/en active Active
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