CN211474070U - Fishing type blanking plug - Google Patents
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- CN211474070U CN211474070U CN201921899654.7U CN201921899654U CN211474070U CN 211474070 U CN211474070 U CN 211474070U CN 201921899654 U CN201921899654 U CN 201921899654U CN 211474070 U CN211474070 U CN 211474070U
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Abstract
The utility model discloses a can drag for formula blanking plug, can drag for formula blanking plug includes: the shell is provided with an axial through inner cavity; the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel. The utility model discloses connect behind the sand control tubular column lower extreme, can optimize the tubular column structure of sand control tubular column, can effectively improve the sand control tubular column and salvage the success rate once, shorten construction cycle, alleviate worker intensity of labour, reduce the operating cost.
Description
Technical Field
The utility model belongs to the technical field of oil field machinery sand control technology and specifically relates to a can drag for formula blanking plug.
Background
The loose sandstone reservoir distribution range is large in China, and the formation sand production is a difficult point for restricting the development of the sandstone reservoir, so that the sand production not only causes the severe corrosion of ground and underground equipment, but also increases the development cost of oil fields. In order to ensure the efficient development of sand production oil fields, various sand control measures are generally adopted to prevent formation sand production, wherein mechanical sand control is a commonly adopted mode of oil fields. Mechanical sand control means that a sand control pipe column is put down to an oil layer well section, a sand control barrier is formed by filling the periphery of the sand control pipe through a ground pump truck, and sand control is carried out again after the sand control pipe column needs to be fished out after sand control fails. When salvaging the sand control pipe column, because the sand control pipe column is wrapped by the annular gravel, the process of milling, back-off and salvaging needs to be repeated, the workload is large, the construction period is long, and the operation cost is high.
CN108661593A plug for cooperating with coiled tubing operation, including a plug body, an elastic shaft sleeve, a thrust ring, a limiting device, a first positioning cylinder, a second positioning cylinder and a resetting device, wherein the first positioning elastic claw and the second positioning elastic claw make the plug only finish setting on a specific profile, the thrust ring and the limiting device are fixed on the plug body through shear pins, the elastic shaft sleeve is movably arranged in the plug body, the upper end of the elastic shaft sleeve is matched with the first positioning elastic claw, the middle part is provided with a step surface, the lower end is provided with a limiting part, the first positioning elastic claw can make the elastic shaft sleeve and the second positioning cylinder relatively fixed, or make the elastic shaft sleeve and the second positioning cylinder relatively displaced to make the step surface abut against the second positioning elastic claw, the limiting part is matched with the limiting device for limiting, the plug forms setting, after the operation is finished, the coiled tubing lifts the plug through a throwing rod to make it unset, and finally, the elastic shaft sleeve is taken out, and the reset device can restore the initial position of the elastic shaft sleeve when the blanking plug is lifted, so that the position of the elastic shaft sleeve is fixed.
Application No.: 201510303318.1, filing date: 2015-06-04 provides an occluder comprising: the central tube is provided with a first end and a second end which are opposite to each other, and the side walls of the central tube close to the first end and the second end are respectively provided with a liquid inlet hole and a liquid outlet hole in a penetrating way; the sealing rubber sleeve is sleeved outside the central tube; the sliding sleeve is connected with the first end of the central pipe in a sliding mode and is provided with a first working position for blocking the liquid outlet hole and a second working position for releasing the blocking of the liquid outlet hole. The cavity of the blanking plug of the utility model, and the liquid inlet hole and the liquid outlet hole which are communicated with the cavity provide a fluid channel; when deblocking, the sliding sleeve is lifted upwards to be converted from the first working position to the second working position, and high-pressure liquid at the bottom of the well returns upwards through a formed fluid channel, so that the purpose of pressure relief is achieved, and the occurrence of blowout accidents is avoided from the source.
Application No.: 201910318913.0, filing date: 2019-04-19 an oil pipe plug, which comprises a pipe body with oil through cavities at two ends, wherein a one-way plug is arranged in a channel between the two oil through cavities. When the pigging operation is carried out to a designed position as required or an operator carries out the pigging operation at the bottom of a well, the pigging operation is carried out to a preset position, the oil pipe is pressurized through a pump of a cement truck on the ground, pressure acts on the plug, when the pressure reaches 7-8 MPa, the screw rod connected with the one-way plug is disconnected in a screw rod shearing mode, the plug falls down, a positive and negative washing circulation channel is formed, the pigging can be normally carried out, at the moment, a shaft is completely made of active water, the blowout can not occur in the starting operation, the phenomenon of the pigging or the blowout can be guaranteed in the pigging operation process, and the purpose of rapidly controlling the pigging or the blowout can be achieved.
Application No.: 201210249456.2, filing date: 2012-07-19 relates to a bailable tubing plug, which comprises an upper joint (1), a main body (2), a slip (3), an upper spacer (4), an upper sleeve (5), a spacer bush (6), a lower sleeve (7), a lower spacer (8), a connecting sleeve (9), a bottom plug (10), a bailing head (12), a push rod (13) and a core rod (14), wherein the push rod (13) can axially separate the main body (2) from the core rod (14) when moving downwards relative to the core rod (14), so that the slide block (16) can remove the limiting effect on the slip (3) through the core rod (14) to realize the bailing. The plugging device is convenient to use, can plug an oil pipe and can take out the plugging device from the oil pipe when needed, so that other operations such as water injection and the like are facilitated. The oil pipe plugging device is more beneficial to oil field operation, improves the working efficiency, saves the working time, realizes reversible operation of the plugged oil pipe, namely the oil pipe plugging device can be taken out when needed after being put into the oil pipe plugging device, and effectively solves the problem in production.
Application No.: 201510296698.0, filing date: 2015-06-02 relates to a blanking plug and a fishing tool, relates to the field of downhole workover tools of oil and gas wells, and mainly aims to reduce the difficulty in fishing and recovering the blanking plug. The main technical scheme adopted is as follows: a plug comprising a plug head; the plugging head comprises a first end and a second end, wherein the first end is opposite to the second end; the shape of the first end is matched with the opening profile of the pressing hole of the outer ball seat, and the first end is used for plugging the outer ball seat; the second end is provided with a first part of a clamping structure, and the first part is used for being clamped with a second part of the clamping structure on the external component. A fishing tool for use with the blanking plug, the fishing tool including a fishing claw; the fishing claw comprises a third end and a fourth end, and the third end is opposite to the fourth end; the third end is used for being connected with an external oil pipe; the fourth end is provided with the second portion.
Application No.: 201820640305.2, filing date: 2018-04-28 discloses an oil pipe plug, and belongs to the field of oil and gas exploitation. The tubing plug comprises: a connecting pipe and a body; the connecting pipe is sleeved on the body through a plurality of shearing pins and is used for being in sealing connection with the oil pipe; the body is abutted against the inner wall of the connecting pipe so as to seal the channel of the connecting pipe; wherein, the material of body is soluble water aluminum alloy. The utility model discloses a shearing pin with the connecting pipe suit on the body, and the body offsets with the inner wall of connecting pipe, can not only effectively block up at oil pipe's lower port, treat to take after the area operation moreover and finish, the body can fall into to the pit shaft in order to open oil pipe's passageway, be favorable to developing of follow-up operation; in addition, set up the material through with the body into soluble water aluminum alloy, can dissolve the body in the pit shaft, avoid the underground junk, need not to salvage the operation, alright guarantee oil well normal production.
Application No.: 201320648242.2, filing date: 2013-10-21 relates to a throwing and fishing type blanking plug for oil well pumping and plugging. Throw and drag for formula blanking plug, including the body, the inside of body is equipped with one and connects, and the other end is the cone, and the body outside is extended to the one end of connecting, is equipped with the voussoir on the joint, is equipped with the slips on the body, the one end of slips is fixed on the body, the other end slides with the inside voussoir of body and links to each other, still encircles on the body and establishes the rubber seal. Oil pipe blanking plug, simple structure, the practicality is stronger. Horn mouth instrument, simple structure, the practicality is stronger. Horn mouth instrument, simple structure, the practicality is stronger.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a formula blanking plug can drag for connects behind the sand control tubular column lower extreme, can optimize the tubular column structure of sand control tubular column, can effectively improve the success rate of once salvaging of sand control tubular column, shortens construction cycle, alleviates worker intensity of labour, reduces the operating cost.
In order to achieve the above object, the utility model discloses a following technical scheme, a can drag for formula blanking plug, include:
the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Furthermore, the middle section of the inner cavity of the shell is a reducing section, the sealing body is fixed on the reducing section in a sealing mode, and the reducing section is an inner sealing boss.
Furthermore, the sealing body is a cone, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top.
Further, a blade is embedded on the conical surface of the conical section.
Further, the seal groove is seted up to cylindrical section outer wall, installs the sealing washer in the seal groove, and the external diameter of cylindrical section is the same with the internal diameter of casing inside reducing section, and above-mentioned sealing washer is sealed the outer wall of cylindrical section and the inner wall of casing inside reducing section promptly.
Furthermore, an axial blind hole is formed in the center of the connecting handle section, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole in the upper portion of the sealing body to form a sand washing circulating channel; the outer diameter of the connecting shank section is smaller than the outer diameter of the cylindrical section.
Furthermore, three circulation holes are uniformly formed in the base plate.
Further, the cylindrical section of the cone is fixedly connected with the shell through radially-mounted pins.
Furthermore, the cylindrical section is provided with a pin groove for installing a pin, and the shell is provided with a pin hole which is through in the radial direction.
Furthermore, the inner wall of the upper port of the shell is provided with a connecting thread for connecting the lower end of the sand control pipe column.
Furthermore, the outer wall of the connecting handle section of the cone is provided with an external thread for connecting the fishing head, and the external thread is a fishing thread.
Compared with the prior art, the utility model following beneficial effect has:
in the sand control construction is connected the blanking plug in the sand control string bottom goes into the well, because the effect of jam, the sand control string prevents into sand and causes the sand card, after going into the cone of specialized tool fishing plug down when needing to salvage, the rethread goes through the continuation sand washing of sand pipe, washes the packing sand on every side of the sand control string clean, removes sand control string sand card, is favorable to salvaging of sand control string.
The utility model discloses connect behind the sand control tubular column lower extreme, can optimize the tubular column structure of sand control tubular column, can effectively improve the sand control tubular column and salvage the success rate once, shorten construction cycle, alleviate worker intensity of labour, reduce the operating cost.
The utility model discloses mainly used machinery sand control technology through perfecting sand control technology tubular column structure, improves the salvage success rate of sand control tubular column, shortens construction cycle, practices thrift the operating cost, instrument easy operation, simple to operate. The anti-sand packer is mainly applied to sand prevention construction of oilfield machinery, is simple in tool operation and high in success rate, and the packer can be used repeatedly after the sealing ring and the pin are replaced, so that the anti-sand packer has high popularization value.
Drawings
Fig. 1 is a schematic structural view of a fishing type blanking plug of the present invention;
fig. 2 is a bottom view of fig. 1.
In the figure: the device comprises a shell 1, a pin 2, a pin hole 3, a sealing boss 4, a connecting thread 5, a blade 6, a cone 7, a sealing ring 8, a circulating hole 9, a fishing screw thread 10 and a blind hole 11.
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 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Furthermore, the middle section of the inner cavity of the shell is a reducing section, the sealing body is fixed on the reducing section in a sealing mode, and the reducing section is a sealing boss 4 arranged on the inner wall.
Further, the sealing body is a cone 7, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top.
Further, the conical surface of the conical section is embedded with a blade 6.
Further, the seal groove is seted up to cylindrical section outer wall, installs sealing washer 8 in the seal groove, and the external diameter of cylindrical section is the same with the internal diameter of casing inside reducing section, and above-mentioned sealing washer is sealed the outer wall of cylindrical section and the inner wall of casing inside reducing section promptly.
Furthermore, an axial blind hole 11 is formed in the center of the connecting handle section, a circulating hole 9 which is radially communicated is drilled downwards at the bottom end of the axial blind hole in an inclined mode, and the circulating hole is communicated with the bottom of the blind hole in the upper portion of the sealing body to form a sand washing circulating channel; the outer diameter of the connecting shank section is smaller than the outer diameter of the cylindrical section.
Furthermore, three circulation holes are uniformly formed in the base plate.
Further, the cylindrical section of the cone is connected and fixed with the housing by means of radially mounted pins 2.
Furthermore, the cylindrical section is provided with a pin groove for installing a pin, and the shell is provided with a pin hole 3 which is through in the radial direction.
Furthermore, the inner wall of the upper port of the shell is provided with a connecting thread 5 for connecting the lower end of the sand control pipe column.
Further, the outer wall of the connecting handle section of the cone is provided with an external thread for connecting the fishing head, and the external thread is the fishing thread 10.
The upper part of the shell is provided with a phi 62mm oil pipe internal thread which is connected with a sand control pipe column, the fishing head is used when the sand control pipe column needs to be fished, the fishing head belongs to the conventional technology in the field, a sealing cone body and a sealing ring are matched to seal an inner cavity of the shell, a pin is used for fixing the sealing cone body, and a scraper on the lower surface of the cone body is used for washing sand and crushing gravel sand.
A method of using a fishable plug comprising the steps of:
the method comprises the following steps that firstly, the upper end of a shell of a fishable blanking plug is connected with the lower end of a sand control pipe column and is put into a well along with the sand control pipe column, the fishable blanking plug generates the original blocking effect at the bottom, and the sand control pipe column normally pumps oil for production;
step two, when the sand control pipe column needs to be salvaged, a salvage tool is put in to carry out buckling connection; the fishing tool is a fishing head, the fishing head is connected to the lower end of the sand washing pipe column, and the sand washing pipe column and the fishing head are put in together;
thirdly, after the fishing head is in threaded connection with the cone, the fishing head is continuously pressed downwards to cut off the pin of the blanking plug, the cone is separated from the shell, the fishing head continuously descends to be separated from a sealing state, and the communication between the circulation hole and the bottom of the shell is released;
the fourth step, the sand washing pipe column is continuously lowered, gravel filled around the bottom of the sand prevention pipe column is washed clean by the sand washing pipe column through the blind hole and the circulating hole, a scraper on the lower surface of the cone is used for washing and crushing gravel sand, sand blocking is removed, and the sand washing pipe column, the fishing head and the cone are lifted out;
and fifthly, after the sand jam is removed, the fishing tool for the sand control pipe column is put in, and the sand control pipe column is successfully fished at one time.
The upper part of the shell is provided with a phi 62mm oil pipe internal thread which is connected with a sand control pipe column, the fishing head is used when the sand control pipe column needs to be fished, the fishing head belongs to the conventional technology in the field, a sealing cone body and a sealing ring are matched to seal an inner cavity of the shell, a pin is used for fixing the sealing cone body, and a scraper on the lower surface of the cone body is used for washing sand and crushing gravel sand.
The sand prevention pipe group combination (from top to bottom): filling packer, letter screen, oil pipe, slotted pipe, oil pipe and fishing type blanking plug. The original sand control pipe string composed of a filling packer, a letter screen, an oil pipe, a slotted pipe and an oil pipe belongs to the known technology in the field.
Various fishing tools and sand wash strings are also conventionally known in the art.
The utility model discloses casing 1 connects at sand control tubular column bottom through connecting thread 5, and cone 7 is fixed inside sealed boss 4 through pin 2, and sealing washer 8 is installed on cone 7, and the processing has pin hole 3 on casing 1; a fishing thread 10 is processed on the upper part of the cone 7; the upper part of the cone 7 is processed into a circular hole shape, and the circulating hole 9 is communicated with the bottom of the circular hole at the upper part of the cone 7 to form a circulating channel; the blade 6 is located at the bottom of the cone 7.
Connect the blanking plug in the sand control tubular column bottom during sand control construction goes into in the well, because the effect of jam, the sand control tubular column prevents to advance the sand and causes the sand card, go into the cone of specialized tool fishing plug down when needing to salvage after, the rethread goes on towards sand of sand pipe, wash clean the packing sand around the sand control tubular column, three blade simultaneously follows the rotation of towards sand tubular column and bores broken sand of sand, further reinforcing towards sand effect, remove sand control tubular column sand card, be favorable to salvaging of sand control tubular column.
The utility model discloses connect behind the sand control tubular column lower extreme, can optimize the tubular column structure of sand control tubular column, can effectively improve the sand control tubular column and salvage the success rate once, shorten construction cycle, alleviate worker intensity of labour, reduce the operating cost.
The utility model discloses mainly used machinery sand control technology through perfecting sand control technology tubular column structure, improves the salvage success rate of sand control tubular column, shortens construction cycle, practices thrift the operating cost, and instrument easy operation, simple to operate has very high spreading value. The anti-sand packer is mainly applied to sand prevention construction of oilfield machinery, is simple in tool operation and high in success rate, and the packer can be used repeatedly after the sealing ring and the pin are replaced, so that the anti-sand packer has high popularization value.
Example 2:
referring to fig. 1 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Furthermore, the middle section of the inner cavity of the shell is a reducing section, the sealing body is fixed on the reducing section in a sealing mode, and the reducing section is a sealing boss 4 arranged on the inner wall.
Further, the sealing body is a cone 7, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top.
Further, the conical surface of the conical section is embedded with a blade 6.
Further, the seal groove is seted up to cylindrical section outer wall, installs sealing washer 8 in the seal groove, and the external diameter of cylindrical section is the same with the internal diameter of casing inside reducing section, and above-mentioned sealing washer is sealed the outer wall of cylindrical section and the inner wall of casing inside reducing section promptly.
Furthermore, an axial blind hole 11 is formed in the center of the connecting handle section, a circulating hole 9 which is radially communicated is drilled downwards at the bottom end of the axial blind hole in an inclined mode, and the circulating hole is communicated with the bottom of the blind hole in the upper portion of the sealing body to form a sand washing circulating channel; the outer diameter of the connecting shank section is smaller than the outer diameter of the cylindrical section.
Furthermore, three circulation holes are uniformly formed in the base plate.
Further, the cylindrical section of the cone is connected and fixed with the housing by means of radially mounted pins 2.
Furthermore, the cylindrical section is provided with a pin groove for installing a pin, and the shell is provided with a pin hole 3 which is through in the radial direction.
Example 3:
referring to fig. 1 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Furthermore, the middle section of the inner cavity of the shell is a reducing section, the sealing body is fixed on the reducing section in a sealing mode, and the reducing section is a sealing boss 4 arranged on the inner wall.
Further, the sealing body is a cone 7, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top. The cylindrical section of the cone is connected and fixed with the housing by means of radially mounted pins 2.
Further, the conical surface of the conical section is embedded with a blade 6.
Further, the seal groove is seted up to cylindrical section outer wall, installs sealing washer 8 in the seal groove, and the external diameter of cylindrical section is the same with the internal diameter of casing inside reducing section, and above-mentioned sealing washer is sealed the outer wall of cylindrical section and the inner wall of casing inside reducing section promptly.
Example 4:
referring to fig. 1 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Furthermore, the middle section of the inner cavity of the shell is a reducing section, the sealing body is fixed on the reducing section in a sealing mode, and the reducing section is a sealing boss 4 arranged on the inner wall.
Further, the sealing body is a cone 7, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top. The cylindrical section of the cone is connected and fixed with the housing by means of radially mounted pins 2.
Further, the seal groove is seted up to cylindrical section outer wall, installs sealing washer 8 in the seal groove, and the external diameter of cylindrical section is the same with the internal diameter of casing inside reducing section, and above-mentioned sealing washer is sealed the outer wall of cylindrical section and the inner wall of casing inside reducing section promptly.
Example 5:
referring to fig. 1 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Further, the sealing body is a cone 7, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top. The cylindrical section of the cone is connected and fixed with the housing by means of radially mounted pins 2.
Example 6:
referring to fig. 1 to 2, the present invention provides a technical solution: a fishable blanking plug comprising:
the device comprises a shell 1, a first connecting piece and a second connecting piece, wherein the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
Although fig. 1 and 2 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown as long as the parts or structural features missing from the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the optimal embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the invention can also be achieved, for example, the embodiment without the blade may cause the sand washing effect to be poor, but the achievement of the objects of the invention is not affected, so all of the embodiments are within the protection scope of the invention.
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 (11)
1. A fishable blanking plug, comprising:
the shell is provided with an axial through inner cavity;
the sealing body is arranged in the inner cavity of the shell and used for plugging the inner cavity of the shell; and an axial blind hole is processed at the upper part of the sealing body, a circulating hole which is radially communicated is drilled at the bottom end of the axial blind hole in an inclined downward mode, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel.
2. The fishing plug of claim 1, wherein the intermediate portion of the inner cavity of the housing is a reduced diameter portion, and the sealing body is sealingly fixed to the reduced diameter portion, i.e. a sealing boss formed on the inner wall of the housing.
3. The fishing plug of claim 2, wherein the sealing body is a cone, and the cone is divided into a conical section, a cylindrical section and a connecting handle section from bottom to top.
4. The fishing plug of claim 3, wherein the tapered surface of the tapered section has blades embedded therein.
5. The fishing plug of claim 3, wherein the outer wall of the cylindrical section defines a sealing groove, and a sealing ring is disposed in the sealing groove, and the outer diameter of the cylindrical section is the same as the inner diameter of the inner reduced section of the casing, such that the sealing ring seals the outer wall of the cylindrical section against the inner wall of the inner reduced section of the casing.
6. The bailing plug according to claim 3, wherein the connecting shank section is provided with an axial blind hole at the center, a circulating hole which is radially penetrated is drilled obliquely downwards at the bottom end of the axial blind hole, and the circulating hole is communicated with the bottom of the blind hole at the upper part of the sealing body to form a sand washing circulating channel; the outer diameter of the connecting shank section is smaller than the outer diameter of the cylindrical section.
7. The fishing plug of claim 6, wherein the circulation holes are evenly three.
8. A plug as claimed in claim 3 in which the cylindrical section of the cone is secured to the housing by radially mounted pins.
9. The fishing plug of claim 8, wherein the cylindrical section defines a pin slot for receiving a pin, and the housing defines a radially extending pin bore therethrough.
10. The bailing plug according to claim 3, wherein the inner wall of the upper port of the housing is provided with connecting threads for connecting the lower end of the sand control string.
11. The fishing plug of claim 3, wherein the outer wall of the connecting shank section of the cone body is provided with an external thread for connecting a fishing head, and the external thread is a fishing thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899654.7U CN211474070U (en) | 2019-11-05 | 2019-11-05 | Fishing type blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921899654.7U CN211474070U (en) | 2019-11-05 | 2019-11-05 | Fishing type blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211474070U true CN211474070U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921899654.7U Active CN211474070U (en) | 2019-11-05 | 2019-11-05 | Fishing type blanking plug |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253037A (en) * | 2020-09-22 | 2021-01-22 | 中国石油天然气股份有限公司 | Well cementation isolating device |
| CN114439423A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Pumping type oil pipe plugging valve |
-
2019
- 2019-11-05 CN CN201921899654.7U patent/CN211474070U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253037A (en) * | 2020-09-22 | 2021-01-22 | 中国石油天然气股份有限公司 | Well cementation isolating device |
| CN114439423A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Pumping type oil pipe plugging valve |
| CN114439423B (en) * | 2020-11-06 | 2024-04-05 | 中国石油化工股份有限公司 | Pumping type oil pipe blocking valve |
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