CN213392081U

CN213392081U - Novel cable seal blowout preventer

Info

Publication number: CN213392081U
Application number: CN202022246305.4U
Authority: CN
Inventors: 赵秀国; 张光旭; 姜玉生; 王俊; 舒义钢; 姚红光; 李德红; 李平; 罗春红; 袁磊
Original assignee: Reservoir Performance Monitoring Center Of Shengli Oilfield Branch Of Sinopec; China Petroleum and Chemical Corp
Current assignee: Reservoir Performance Monitoring Center Of Shengli Oilfield Branch Of Sinopec; China Petroleum and Chemical Corp
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-06-08
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a novel cable sealing blowout preventer, which comprises a primary blowout preventer, a secondary blowout preventer and a pressure relief mechanism; the first-stage blowout preventing mechanism, the second-stage blowout preventing mechanism and the pressure relief mechanism are internally provided with central channels through which cables can pass, and the first-stage blowout preventing mechanism and the second-stage blowout preventing mechanism are used for extruding and sealing the cables; the upper end of the pressure relief mechanism is connected with a first-stage blowout prevention mechanism, and the lower end of the pressure relief mechanism is connected with a second-stage blowout prevention mechanism. When the well temperature leakage detection, the well temperature profile, the water detection and other well logging constructions which need pressurization are carried out, well blowout can be prevented, the spraying direction of wellhead leaking well liquid can be changed, the pollution to the environment and wellhead facilities can be controlled, the leaking well liquid can be recovered, and the smooth implementation of the pressurization well logging operation can be ensured. Ensuring safe production.

Description

Novel cable seal blowout preventer

Technical Field

The utility model belongs to the technical field of the well head technique of preventing spouting and specifically relates to a novel cable seal prevents spouting device.

Background

When the pressurized logging operation is carried out on the oil-water well, the blowout prevention sealing device of the wellhead cable becomes key equipment in construction. The sealing performance of the blowout prevention sealing device is directly related to the accuracy of recorded data and the importance of environmental protection. Because the outer armor steel wire of cable is cylindrical, the surface is unsmooth, is the wave. The well temperature leakage detection, the well temperature profile and the water detection construction are carried out under the condition of pressurizing and testing. Therefore, the cable can be lifted and lowered down to be in a motion state, and due to the fact that the surface of the cable is not smooth, the cable and packing are seriously abraded and are not tightly sealed, well liquid in a well can be leaked, a well mouth and a well site are polluted, even a farmland can be polluted, and great loss is caused.

Publication (bulletin) No.: CN105971546B, publication (public notice) day: 2019-05-24 provide a preventer that is applicable to steel wire and cable, including head body and nipple joint, still include the compression leg, sealed packing deposits pad and sealed packing, the lower extreme of compression leg is connected sealed packing and is deposited the top of pad, sealed packing is deposited the periphery of pad and is set up the stripper bar, sealed packing sets up the below that sealed packing deposited the pad, just the stripper bar is located the periphery of sealed packing, the compression leg, sealed packing are deposited pad and sealed packing and are all seted up the hole, work as the compression leg pushes down, the stripper bar extrusion sealed packing makes the hole aperture of sealed packing reduces. When sealing is needed, the pressure column is controlled to move downwards, the pressure column extrudes the sealing packing to store the gasket, and the sealing packing is stored and the gasket moves downwards. The extrusion strip moves downwards along the outer periphery of the sealing packing, so that the sealing packing is intensively extruded towards the middle, and the aperture of the inner hole is reduced.

Publication (bulletin) No.: CN200940465Y, publication (public notice) day: 2007-08-29 discloses a cable blowout preventer, which is suitable for well repair and logging operations for oil fields, and realizes cable test operation when a wellhead is in a closed controllable state. The device consists of a cable sealing device, a lubricating grease pressurization compensation device, a flashboard sealing device, a cable shearing device and a cable clamping device. The perforating gun hanger is divided into two bodies, after the hanger of the perforating gun penetrates through the upper shell, the hanger is hung on the perforating gun, and after the perforating gun passes through the lower shell, the upper shell and the lower shell are connected through the large-pitch nut. The device has the advantages of light weight, small volume, convenient operation, strong practicability, reliable sealing and the like.

Publication (bulletin) No.: CN204804750U, publication (public notice) day: 2015-11-25 discloses a cable blowout preventer, including cable slips, three flashboard cable blowout preventers of liquid accuse, catcher, prevent spouting the joint, blowout prevention pipe, catcher on the liquid accuse, annotate the sealed head of fat, three flashboard cable blowout preventers of liquid accuse downside fixed cable slips, three flashboard cable blowout preventers of liquid accuse upside fixed liquid accuse catcher down, catcher under the liquid accuse fixed blowout prevention joint on the top of catcher, prevent spouting the fixed blowout prevention pipe in the top of the joint, catcher on the fixed liquid accuse on the top of blowout prevention pipe, the fixed sealed head of annotating fat on the top of catcher on the liquid accuse. The structure design is simple and reasonable, and the designated position of the cable can be accurately judged; the system can remind operators, wellhead workers and the like to pay attention to safe operation, avoid faults and avoid underground accidents.

Publication (bulletin) No.: CN210483620U, publication (public notice) day: 2020-05-08 discloses an over-cable wellhead blowout preventer, which comprises a blowout preventer box, a gasket, a plurality of rubber rings and a cable pressure cap, wherein the blowout preventer box is of a pipe body structure, and the lower end of the blowout preventer box is arranged on a wellhead; the gasket is limited on a step on the inner wall of the blowout prevention box, and a bayonet is formed on the gasket so as to be clamped on the cable conveniently; the rubber rings are arranged in the blowout prevention box, are sequentially stacked on the gasket and are compressed by the cable pressing cap. The novel steel wire rope winding machine has the advantages of small volume, light weight, simple process, quickness in operation, convenience in installation, strong practicability, wide application range, low manufacturing cost and construction cost, convenience in popularization and wide application prospect.

In a word, above technical scheme of the disclosure and the technical problem that will solve and the beneficial effect who produces all with the utility model discloses inequality, perhaps technical field or application are different, are directed against the utility model discloses more technical problem and the beneficial effect that will solve, above all there is not technological inspiration in the technical document of disclosing.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel cable seal prevents spouting device to the above-mentioned defect that prior art exists, when oil-water well temperature is looked for hourglass, well temperature section, is looked for water etc. and needs the pressurized logging construction, can prevent the blowout and change the jet direction of well head thorn hourglass well liquid, both control the pollution that causes environment and well head facility, can make the well liquid that the thorn spills again can recovery processing to guarantee the smooth implementation of pressurization logging operation. Ensuring safe production.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel cable sealing blowout preventer comprises a primary blowout preventer, a secondary blowout preventer and a pressure relief mechanism;

the first-stage blowout preventing mechanism, the second-stage blowout preventing mechanism and the pressure relief mechanism are internally provided with central channels through which cables can pass, and the first-stage blowout preventing mechanism and the second-stage blowout preventing mechanism are used for extruding and sealing the cables;

the upper end of the pressure relief mechanism is connected with a first-stage blowout prevention mechanism, and the lower end of the pressure relief mechanism is connected with a second-stage blowout prevention mechanism.

Further, the pressure relief mechanism comprises a compression pressure relief cavity;

the upper port of the compression pressure-relief cavity is provided with a thread for connecting a secondary blowout prevention mechanism, and the lower port of the compression pressure-relief cavity is provided with a thread for connecting a primary blowout prevention mechanism;

the inner wall of the compression pressure release cavity is provided with an integrated baffle ring, the compression pressure release cavity is also provided with a radial discharge hole, and the discharge hole is arranged at a position higher than the position of the baffle ring.

Further, the drain hole is externally connected with a well fluid guide pipe which is provided with a quick connector.

Furthermore, the primary blowout prevention mechanism comprises a primary blowout prevention assembly, a primary pressing sheet, a packing set and a primary pressing block;

the upper end of the primary blowout prevention mechanism is in threaded buckle type connection with the compression pressure relief cavity, and the primary pressing sheet, the packing set and the primary pressing block are all provided with central holes through which cables can pass;

the lower end face of the first-stage pressing sheet is limited on a bottom end inner ring platform in the first-stage blowout prevention mechanism, and the packing group is arranged in the first-stage blowout prevention mechanism and pressed on the first-stage pressing sheet;

the first-stage pressing block is arranged in the first-stage blowout prevention mechanism and pressed on the packing set, and the upper end face of the first-stage pressing block is tightly propped against the retaining ring pressing the inner wall of the pressure release cavity.

Further, the packing group is composed of a plurality of packing groups which are stacked together.

Further, the secondary blowout prevention mechanism comprises a secondary blowout prevention component, a secondary pressing sheet, a sealing filler, a secondary pressing block and a pressing cap;

the lower end of the secondary blowout prevention mechanism is in threaded connection with the compression pressure relief cavity, and the secondary pressing sheet, the sealing filler and the secondary pressing block are provided with center holes through which cables can pass;

the lower end face of the secondary pressing sheet is limited on a bottom end inner ring platform in the secondary blowout prevention mechanism, and the sealing filler is arranged in the secondary blowout prevention mechanism and pressed on the secondary pressing sheet;

the secondary pressure block is arranged in the secondary blowout prevention mechanism and pressed on the sealing filler, the upper end face of the secondary pressure block is tightly propped against the pressure cap, and the pressure cap is in threaded connection with the upper port of the secondary blowout prevention mechanism.

Further, the sealing filler is provided with at least one layer.

And the well fluid diversion pipe is communicated with the well fluid recovery container.

Compared with the prior art, the utility model following beneficial effect has:

the wellhead is provided with a novel cable sealing blowout preventer. The method is convenient for site construction, and thoroughly solves the problem of pollution caused by puncture of the pressurized logging well mouth for many years, thereby improving the safety factor of pressurized logging operation.

The utility model has the advantages of as follows: the leaked well fluid is recycled, and the environmental pollution is avoided; the cable is further cleaned, and the service life of the cable is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a novel cable seal blowout preventer.

In the figure: the device comprises a primary blowout prevention assembly 1, a pressing sheet 2, a packing group 3, a pressing block 4, a pressing pressure relief cavity 5, a secondary sealing assembly 6, a sealing filler 7, a pressing block 8, a pressing cap 9, a cable 10, a pressing sheet 11, a well fluid diversion pipe 12, a quick connector 13, a well fluid recovery container 14, a drainage hole 15 and a cavity 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1, the present invention provides a technical solution:

Further, the pressure relief mechanism comprises a compression pressure relief cavity 5;

the inner wall of the compression pressure release cavity is provided with an integrated baffle ring, the compression pressure release cavity is also provided with a radial discharge hole 15, and the discharge hole is higher than the baffle ring.

Further, the drain hole is externally connected with a well fluid flow guide pipe 12 which is provided with a quick connector 13.

Further, the primary blowout prevention mechanism comprises a primary blowout prevention assembly 1, a primary pressing sheet 2, a packing set 3 and a primary pressing block 4;

Further, the secondary blowout prevention mechanism comprises a secondary blowout prevention component 6, a secondary pressing sheet 11, a sealing filler 7, a secondary pressing block 8 and a pressing cap 9;

Further, the sealing filler is provided with at least one layer.

The novel cable sealing blowout preventer comprises a primary blowout preventer component 1, a compaction pressure relief cavity 5, a well fluid diversion pipe 12, a well fluid recovery container 14, a secondary sealing component 6 and a pressure cap 9.

The first-stage blowout prevention assembly 1 is in threaded connection with the compression pressure relief cavity 5, the compression pressure relief cavity 5 is in threaded connection with the second-stage sealing assembly 6, and the top of the second-stage sealing assembly 6 is in threaded connection with the pressure cap 9.

When the pressure logging is carried out, the pressure release cavity 5 is rotated to compress the pressing block 4, and the pressing block 4 presses the packing group 3, so that the packing group 3 is deformed and tightly combined with the cable 10 to play a role in blowout prevention.

And rotating the pressing cap 9 to extrude the pressing block 8, extruding the sealing filler 7 by the pressing block 8, and deforming the sealing filler 7 to be tightly combined with the cable 10 to play a sealing role.

When the logging cable moves up and down, due to abrasion of the cable and the packing, well liquid can be blown into the cavity 16 of the pressure release cavity 5 from a gap between the cable and the packing, and the leaked well liquid can only be discharged from the hole 15 and flows into the well liquid recovery container 14 through the guide pipe with the quick connector 13 along the guide of the guide pipe 12 because the secondary sealing assembly 6 prevents the upward movement direction of the leaked well liquid.

After the construction is finished, the well fluid in the recovery container 14 is reasonably recovered.

First stage blowout preventer bottom zone Rc2¹/₂The 10-tooth oil pipe buckle can be connected with a wellhead hoop head, the upper part of the oil pipe buckle is provided with common threads and can be connected with the lower part of the compression and decompression cavity, and the primary blowout prevention assembly consists of a pressing sheet, a packing (four groups) and a pressing block from bottom to top; the middle part of the pressure relief cavity is a pressure relief cavity, the lower part of the pressure relief cavity is provided with a common internal thread which can be connected with the upper part of the first-stage blowout prevention assembly and can extrude a pressing block in the first-stage blowout prevention assembly to enable a packing to be extruded and deformed and to be tightly combined with a cable, the middle part of the pressure relief cavity is provided with a phi 32 hole and welded with a one-inch and half 90-degree elbow, the elbow is connected with a diversion hose with a quick connector, a diversion pipe is placed into a well fluid recovery container and used for recovering well fluid leaked by stabs, and the upper part of the pressure¹/₂The 10-tooth oil pipe buckle can be connected with the secondary sealing component; secondary seal assembly bottom band Rc2¹/₂The 10-tooth oil pipe buckle can be connected with the upper part of the compression and decompression cavity, the upper part is provided with common threads and can be connected with the pressing cap, and the secondary sealing component consists of a pressing sheet, a sealing filler and a pressing block from bottom to top; the pressure cap with the common threads can be connected with the upper part of the secondary sealing assembly, the pressing block in the secondary sealing assembly can be extruded by rotating the pressure cap, the pressing block compresses the sealing filler, and the sealing filler is tightly combined with the cable to play a sealing role.

The utility model relates to a well control equipment of oil industry's dynamic monitoring logging, especially the well head of pressurization logging is prevented spouting, is sealed, the pressure release water conservancy diversion effect is showing, is applicable to oil-water well temperature and looks for leaks, well temperature profile, looks for water etc. and needs the pressurized logging construction, and the device can prevent the blowout and change the jet direction of well head thorn hourglass well liquid, both controls the pollution that causes environment and well head facility, can make the well liquid that the thorn spills again can recovery processing.

Example 2:

referring to fig. 1, the present invention provides a technical solution:

Example 3:

referring to fig. 1, the present invention provides a technical solution:

Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the present invention can also be achieved, so all of these modified embodiments are within the scope of the present invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 invention. In this specification, the schematic representations of the terms used above 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 a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel cable sealing blowout preventer is characterized by comprising a primary blowout preventer mechanism, a secondary blowout preventer mechanism and a pressure relief mechanism;

2. The novel cable seal blowout preventer of claim 1, wherein the pressure relief mechanism comprises a compression pressure relief cavity;

3. The novel cable seal blowout preventer of claim 2, wherein the drain hole is externally connected to a well fluid flow conduit, and the well fluid flow conduit is provided with a quick-disconnect coupling.

4. The novel cable seal blowout preventer according to claim 2 or 3, wherein the primary blowout preventer comprises a primary blowout preventer component, a primary pressure plate, a packing set and a primary pressure plate;

5. The novel cable seal blowout preventer of claim 4, wherein the packing set comprises a plurality of packing sets stacked together.

6. The novel cable seal blowout preventer of claim 2, 3 or 5, wherein the secondary blowout preventer comprises a secondary blowout preventer component, a secondary pressure plate, a seal packing, a secondary pressure plate, and a pressure cap;

7. The novel cable seal blowout preventer of claim 6, wherein at least one layer of the seal packing is provided.

8. The novel cable seal blowout preventer of claim 3, further comprising a well fluid recovery vessel, wherein the well fluid diversion pipe is in communication with the well fluid recovery vessel.