CN206554865U - plugging device - Google Patents

Abstract

This application provides a kind of plugging device, the central passage for blocking preventer, it includes：The body of cavity is provided with, the outer wall of body is adapted with the inwall of central passage；Be set in first locating part and first seal of the body on the side wall of lower end, first seal is located at the top of the first locating part, and with the first locating part phase contact；Second locating part and second seal of the body on the side wall of upper end are set in, in the shape of a spiral, the second locating part is used for spacing to second seal progress second seal.During the plugging device of the application can occur running into Oil/gas Well during the situation of pressurized overflow, the central passage of preventer is preferably blocked, so as to reach the purpose of blowout prevention.

Description

Plugging device

Technical field

The application is related to closure dress during pressurized overflow well logging field of sealing technology, more particularly to a kind of generation suitable for Oil/gas Well Put.

Background technology

The description of this part only provides the background information related to disclosure, without constituting prior art.

When carrying out the logging operation of casing inspection, it can often run into pressure during Oil/gas Well occurs and (be generally between 1 to 15 MPa Between) situation of overflow.Therefore, when carrying out logging operation to above-mentioned Oil/gas Well, often need that preventer is installed in well head, to prevent Only gas blowout accident occurs for Oil/gas Well.

In practice, the arm caliper logging tool of tripping in 40 when carrying out the logging operation of casing inspection, it is necessary into sleeve pipe, to examine Situations such as whether sleeve pipe has deformation, perforation or inner wall corrosion surveyed.Usually, 40 arm caliper logging tools of tripping in are needed through blowout prevention Pipe.Specifically, the preventer installed in well head has the central passage that is connected with sleeve pipe, 40 arm caliper logging tools are passed through in this In heart passage sleeve pipe.

Generally, it is 40 arm caliper logging tool normal works of driving, its upper end needs to be connected with the cable of transmission electric energy, 40 arms After caliper logging tool is lowered into sleeve pipe, cable is at least partially received in the central passage.Generally, cable has Standard specification size correspondingly, for example, in casing inspection operation, common cable is 11.8mm, 7.6mm, and is usually used in set The size of the central passage of the ram preventer of pipe flaw detection operation is generally 66.7mm.So, it is contained in the electricity in central passage Carefully be formed with gap between cable and central passage, thus cause shut-in well it is not tight, blowout prevention effect is not good.And in order to make up shut-in well not Sternly, frequently with measure to increase well head, the static pressure of fluid column in pit shaft can be improved to install lubricator on preventer, Blowout prevention effect is improved to reach.However, such Compensation measures add the complexity of wellhead assembly, practical operation is also more It is cumbersome.

It should be noted that the introduction of technical background is intended merely to above the convenient technical scheme to the application carry out it is clear, Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Can not be merely because these schemes be the application's Background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.

Utility model content

In view of this, the application embodiment provides a kind of plugging device, and the plugging device can run into Oil/gas Well In generation during the situation of pressurized overflow, the central passage of preventer is preferably blocked, so as to reach the purpose of blowout prevention.

To achieve these goals, this application provides following technical scheme.

A kind of plugging device, the plugging device is used to block the central passage of preventer；Including：Lengthwise extends Body, the first locating part, first seal, spiral second seal and the second locating part；The body along its Lengthwise bearing of trend is provided with the cavity worn for current supply cable, and the outer wall of the body and the inwall of the central passage are mutually fitted Match somebody with somebody；First locating part is set in the body on the side wall of lower end；The first seal is set in the body Close to lower end side wall on, the first seal be located at first locating part top, and with the first locating part phase Contact；The second seal is arranged on the upper end of the body；Second locating part is set in the body close to upper end Side wall on, second locating part be used for the second seal carry out it is spacing.

Preferably, in addition to fixture, the fixture be arranged on the second seal and the body upper end it Between.

Preferably, second locating part is in the tubular of lower ending opening, and tubular second locating part is away from described The first through hole passed through for the cable is provided with the wall of opening.

Preferably, in addition to fastener, the fastener is set in outside second locating part.

Preferably, the fastener is cylindrical, and internal thread is provided with the inwall of the cylindrical fastener；Institute State and be provided with the external screw thread being adapted with the internal thread on the second locating part outer wall.

Preferably, in addition to the connector for being connected with the preventer, the connector is set in the fastening Outside part.

Preferably, the connector is in the tubular of lower ending opening, and the lower end of the connector, which has, to be extended radially outward Extension, be provided with connecting hole on the extension.

Preferably, the tubular connector is provided with second passed through for the cable on the wall of the opening Through hole.

By the technical scheme of the above, the application is by setting the body being adapted with the central passage of preventer, when need When carrying out the logging operation of casing inspection, the cable for transmitting electric energy to 40 arm caliper logging tools can be located in body In cavity, it is possible to by the center of first seal and second seal to body and preventer for being arranged on body upper and lower ends Gap that may be present is sealed between passage, by the first locating part and the second locating part respectively to first seal and second Seal progress is spacing, so as to preferably realize the closure to the central passage of preventer, has been avoided as much as being covered During the logging operation of pipe flaw detection, the situation of pressurized overflow during Oil/gas Well occurs is run into, so as to reach the purpose of blowout prevention.

Other application field will become obvious according to description provided herein.The description of the utility model content and tool Body example is only intended to the purpose illustrated, it is not intended that limitation scope of the present utility model.

Brief description of the drawings

Accompanying drawing described here is only used for task of explanation, and is not intended in any way limit model disclosed in the present application Enclose.In addition, shape and proportional sizes of each part in figure etc. are only schematical, the understanding to the application is used to help, and It is not the specific shape and proportional sizes for limiting each part of the application.Those skilled in the art, can under teachings of the present application To select various possible shapes and proportional sizes to implement the application as the case may be.In the accompanying drawings：

Fig. 1 is the plugging device structural representation of the application embodiment.

Embodiment

It should be noted that when a parts are referred to as " being arranged at " another parts, it can be directly another On individual parts or there can also be a parts placed in the middle.When a parts are considered as " connection " another parts, It can be directly to another parts or may be simultaneously present parts placed in the middle.Term as used herein is " perpendicular It is straight ", " level ", "left", "right" and similar statement for illustrative purposes only, it is unique implement to be not offered as Mode.

Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more The arbitrary and all combination of related Listed Items.

Referring to Fig. 1, the application embodiment provides a kind of plugging device, the plugging device can be used for blowout prevention The central passage of device is blocked.It can include：The body 1 of lengthwise extension, the first locating part 2, first seal 3, in spiral shell Revolve the locating part 5 of second seal 4 and second of shape.Wherein, the body 1 is provided with for powering along its lengthwise bearing of trend The cavity 11 that cable is worn, the outer wall of the body 1 is adapted with the inwall of the central passage；First locating part 2 is arranged In the body 1 on the side wall of lower end；The first seal 3 is set in the body 1 on the side wall of lower end, institute State first seal 3 be located at first locating part 2 top, and with the phase contact of the first locating part 2；Second sealing Part 4 is arranged on the upper end of the body 1；Second locating part 5 is set in the body 1 on the side wall of upper end, described Second locating part 5 is spacing for being carried out to the second seal 4.

The plugging device of the application embodiment, by setting the body 1 being adapted with the central passage of preventer, when need When carrying out the logging operation of casing inspection, the cable for transmitting electric energy to 40 arm caliper logging tools can be located in body 1 Cavity 11 in, it is possible to by being arranged on the first seal 3 and second seal 4 of the upper and lower ends of body 1 to body 1 and blowout prevention Gap that may be present is sealed between the central passage of device, close to first respectively by the first locating part 2 and the second locating part 5 Sealing 3 and second seal 4 carry out spacing, so as to preferably realize the closure to the central passage of preventer, keep away as much as possible Exempt from, in the logging operation of progress casing inspection, the situation of pressurized overflow during Oil/gas Well occurs to be run into, so as to reach the mesh of blowout prevention 's.

It was verified that using the plugging device of the application embodiment, shut-in well effect is preferable.In practice, it may not be necessary to Lubricator is installed, so as to greatly simplify the structure of wellhead assembly, operation is simple on preventer.

In the present embodiment, preventer and 40 arm caliper logging tools can use any appropriate existing construction, this Shen Please this is not construed as limiting.

In the present embodiment, the outer wall of body 1 is adapted with the inwall of preventer central passage, can be body 1 Outside dimension and the interior radial direction of preventer central passage are equal sized.So, the outer wall of body 1 can preferably with central passage Inwall fit.As described above, the size for being usually used in the central passage of the ram preventer of casing inspection operation is generally 66.7 millimeters, then the outside dimension of body 1 can be 66.7 millimeters.In order to reduce difficulty of processing, the outside dimension of body 1 can To be fluctuated in certain error tolerance, it is exemplified as, the error tolerance can be 0.1 millimeter.

First seal 3 and second seal 4 can be to possible between the outer wall of body 1 and the central passage inwall of preventer The gap of presence is sealed.In practice, preventer can be ram preventer, and it has flashboard.When body 1 is contained in the lock When in the central passage of plate preventer, first seal 3 can be located at the lower section of flashboard, and second seal 4 is located at the upper of body 1 End, the solid flashboard in the first locating part 2 top, so as to apply thrust to first seal 3, is realized to the spacing of first seal 3；The Two locating parts 5 are set in the upper end of body 1, and apply thrust to second seal 4, realize to the spacing of second seal 4. Meanwhile, the first locating part 2 and the second locating part 5 apply thrust to first seal 3 and second seal 4, it is also ensured that First seal 3 and second seal 4 can have preferably sealing effectiveness.

In the present embodiment, first seal 3 substantially can be annular in shape, and it can be by soft elastic material such as rubber-like material Material is made.Second seal 4 in the shape of a spiral, so forms passage in the middle, in order to which cable is passed through.Second seal 4 It can be made up of soft elastic material such as rubber type of material.

During in order to prevent that cable from passing through second seal 4, second seal 4 moves down under the drive of cable and causes it to lose Depressurization is acted on, and fixture 6 can also be set between the upper end of second seal 4 and body 1.Fixture 6 substantially can be in Round pie or sheet, it has certain rigidity.It is exemplified as, fixture 6 can be made up of metal material.So, fixture 6 is set Put in the lower section of second seal 4, rigid support can be played a part of to second seal 4, it is to avoid second seal 4 is in electricity The drive of cable, which is issued, gives birth to shifting.

In the present embodiment, the first locating part 2 can be substantially provided with round table-like in the first round table-like locating part 2 Perforation, so that body 1 is worn.Second locating part 5 is substantially cylindrical in shape, the one end open of tubular second locating part 5, body 1 upper end is entered in the second locating part 5 by opening.Second locating part 5 can be provided with power supply on the wall of lower ending opening The first through hole 51 that cable is passed through.Further, dismantle for convenience, the second locating part 5 can include multiple limiting sections, multiple limits The phase split of position portion is to form the second locating part 5.Specifically, multiple limiting sections substantially can be a part for cylinder, it can be wrapped Include substantially in the side wall of arc-shaped and in fan-shaped roof, it is multiple in gap can be provided with fan-shaped roof, it is multiple in circle The side wall of arcuation can be spliced to form the side wall of the second locating part 5, and being provided with the multiple of gap can splice in fan-shaped roof The top of the second locating part 5 is formed, multiple gap are spliced to form the opening that current supply cable is passed through.

In order to which the second locating part 5 is fixed, the plugging device of the application can also include fastener 7, and fastener 7 can To be set in outside the second locating part 5.Specifically, fastener 7 substantially can be in the cylindrical shape of both ends open, cylindrical fastener 7 inwall can be provided with internal thread, the outer wall of the second locating part 5 and be provided with the external screw thread being adapted with the internal thread.Pass through The mode of threaded connection, fastener 7 can be screwed outside the second locating part 5, realize the fastening of the second locating part 5.

Further, it is in one embodiment, described for the connection of the plugging device and preventer of realizing the application Plugging device can also include the connector 8 for being used to be connected with preventer, and connector 8 is set in outside fastener 7.

In the present embodiment, connector 8 substantially can lower ending opening tubular, fastener 7 entered by the opening of lower end In connector 8, so, other components of the plugging device of the application are coated in connector 8 at least in part.Connector 8 Lower end with the extension 81 that extends radially outward, being provided with connecting hole on extension 81, connecting hole can be for fastening Pin is worn, so as to realize the connection of connector 8 and preventer.Meanwhile, nationality, can be to the envelope of the application with above-mentioned connected mode Other components of block apparatus apply downward fastening force, so that the plugging device of the application can keep preferably globality, It can also make first seal 3 and second seal 4 that there is preferably sealing effectiveness.

In addition, tubular connector 8 is provided with the second through hole that current supply cable is passed through on the wall away from its lower ending opening 82, second through hole 82 can with formed in first through hole 51, second seal 4 passage, the common shape of cavity 11 in body 1 Into the space of current supply cable tripping in.

The application method of the plugging device of the application is described below.

1st, body 1, first seal 3, the first locating part 2 are connected together first；

2nd, fastener 7 is passed through into cable connector (being commonly called as torpedo head)；

3rd, second seal 4 is twined around cable；

4th, again by body 1, first seal 3, the first locating part 2 combination through cable connector；

The 5th, fixture 6 is placed on to the upper end of body 1, position is under second seal 4；

6th, the second locating part 5 is enclosed on the outer wall of body 1；

7th, by screw threads for fastening, fluid sealant is injected at the place of being threadedly engaged to fastener 7 outside locating part 32, and therebetween；

8th, the top of connector 8 and the top of fastener 7 are interlocked, bottom is together with the original preventer screw connection of well head；

9th, by 40 arm caliper logging tools and cable connection, logging truck lifts 40 arm caliper logging tools；

10th, slow decentralization opens the emptying of well mouth sealing device side to pithead position.

11st, wellhead blowout preventor is opened, in 40 arm caliper logging tool lower going-into-wells, treats that first seal 322 is located at preventer When below gate, flashboard is closed；

12nd, logging operation is started.

13rd, well logging takes out 40 arm caliper logging tools after finishing.

It should be noted that in the description of the present application, term " first ", " second " etc. are only used for description purpose and difference Similar object, between the two and in the absence of sequencing, can not be interpreted as indicating or implying relative importance.In addition, In the description of the present application, unless otherwise indicated, " multiple " are meant that two or more.

Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, the time) are from 1 to 90, preferably from 21 To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives 68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit. These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope " about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about 30 ", at least end points including indicating.

It should be understood that above description is to be limited in order to illustrate rather than.By reading above-mentioned retouch State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art See.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to preceding claims and this The four corner of the equivalent that a little claims are possessed is determined.It is for comprehensive purpose, all articles and special with reference to including The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as applicant the theme is not thought of as it is disclosed Apply for a part for theme.

Claims (8)

1. a kind of plugging device, the plugging device is used to block the central passage of preventer；Characterized in that, bag Include：The body of lengthwise extension, the first locating part, first seal, spiral second seal and the second locating part；Institute State body and the cavity worn for current supply cable, the outer wall of the body and the central passage are provided with along its lengthwise bearing of trend Inwall be adapted；First locating part is set in the body on the side wall of lower end；The first seal is arranged In the body on the side wall of lower end, the first seal is located at the top of first locating part, and with described the One locating part phase contact；The second seal is arranged on the upper end of the body；Second locating part is set in described Body is on the side wall of upper end, and second locating part is used for spacing to second seal progress.

2. plugging device as claimed in claim 1, it is characterised in that also including fixture, the fixture is arranged on described Between the upper end of second seal and the body.

3. plugging device as claimed in claim 1, it is characterised in that second locating part is in the tubular of lower ending opening, is in Second locating part of tubular is provided with the first through hole passed through for the cable on the wall of the opening.

4. plugging device as claimed in claim 1, it is characterised in that also including fastener, the fastener is set in described Outside second locating part.

5. plugging device as claimed in claim 4, it is characterised in that the fastener is cylindrical, cylindrical is described Internal thread is provided with the inwall of fastener；The outer spiral shell being adapted with the internal thread is provided with the second locating part outer wall Line.

6. plugging device as claimed in claim 4, it is characterised in that also including the connection for being connected with the preventer Part, the connector is set in outside the fastener.

7. plugging device as claimed in claim 6, it is characterised in that the connector is in the tubular of lower ending opening, the company The lower end of fitting has is provided with connecting hole on the extension extended radially outward, the extension.

8. plugging device as claimed in claim 7, it is characterised in that the tubular connector deviates from the wall of the opening On be provided with the second through hole passed through for the cable.