CN111749642A - Novel pressure control integrated upper sealing well completion tool - Google Patents
Novel pressure control integrated upper sealing well completion tool Download PDFInfo
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- CN111749642A CN111749642A CN202010799008.4A CN202010799008A CN111749642A CN 111749642 A CN111749642 A CN 111749642A CN 202010799008 A CN202010799008 A CN 202010799008A CN 111749642 A CN111749642 A CN 111749642A
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- sleeve
- sliding sleeve
- circulation hole
- control sliding
- wall
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
Abstract
The invention relates to an integrated sealing well completion tool, which comprises an upper joint, a circulation hole sleeve, a circulation hole control sliding sleeve, a control locking block, a rubber sleeve liquid inlet short section, a rubber sleeve control sliding sleeve, a connecting sleeve, a central pipe and a hydraulic expansion rubber sleeve which are all in a hollow tubular structure; establish the runner on the packing element feed liquor nipple joint inner wall, packing element feed liquor nipple joint one end and circulation hole cover one end inner wall fixed connection, and with circulation hole control sliding sleeve outer wall fixed connection, circulation hole control sliding sleeve and packing element control sliding sleeve fixed connection, packing element control sliding sleeve other end lateral wall realizes the sealed to the runner, the relative locking of circulation hole control sliding sleeve compared in packing element feed liquor nipple joint is realized to the control locking piece, and the locking of circulation hole control sliding sleeve is removed in the locking piece recess that the control locking piece can contract on the packing element control sliding sleeve outer wall, the center tube passes through the fixed cover of adapter sleeve and establishes in packing element feed liquor nipple joint, hydraulic expansion packing element cover is established on the center tube outer wall. The invention can integrate the grading hoop, the packer and the blind plate into a whole, thereby reducing the overall cost of the tool.
Description
Technical Field
The invention belongs to the technical field of well completion construction, and particularly relates to a novel pressure control integrated upper sealing well completion tool.
Background
The upper-fixing lower-screening or semi-range well cementing process pipe column is generally a blind plate short section, an expansion type packer, 2-3 casing pipes, a grading hoop and a casing pipe from bottom to top to a well head, the upper-portion well cementing is realized through the grading hoop and the expansion type packer by pressurizing in the blind plate pipe, and the production is obtained from a later stage drilling through the grading hoop to the blind plate section. The process has the following problems although the process is widely applied: 1) a fixed blind plate is arranged in the blind plate short section, so that pressure excitation is easily caused in the running process, a grading hoop and an expansion packer are started in advance, and the whole construction is failed; 2) the valve system of the expansion packer has a complex structure and low relative reliability, and once the control valve system fails, the expansion packer cannot be expanded or fails due to over expansion, so that the upper well cementation quality is seriously influenced, and even the process implementation is influenced; 3) between hierarchical hoop and the blind plate, if it is too short to leave sleeve pipe length, can guide hierarchical hoop to close the difficulty, the scene is suppressed and is congealed, causes certain well control risk, if middle sleeve pipe length overlength, can be detained long section cement stopper, the later stage bores the stopper cycle length, and is big to sheathed tube damage.
Therefore, based on the problems, the novel pressure control integrated upper sealing completion tool which can integrate the functions of the grading hoop, the packer and the blind plate and reduce the overall cost of the tool has important practical significance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a novel pressure control integrated upper sealing completion tool which can integrate the functions of a grading hoop, a packer and a blind plate and reduce the overall cost of the tool.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a novel pressure control integrated upper part sealing well completion tool comprises an upper joint, a circulation hole sleeve, a circulation hole control sliding sleeve, a control locking block, a rubber sleeve liquid inlet short section, a rubber sleeve control sliding sleeve, a connecting sleeve, a central pipe and a hydraulic expansion rubber sleeve which are all of a hollow tubular structure; the inner wall of the rubber cylinder liquid inlet nipple is provided with a plurality of groups of flow channels, one end of the rubber cylinder liquid inlet nipple is fixedly connected with the inner wall of one end of the circulating hole sleeve and is fixedly connected with the outer wall of the circulating hole control sliding sleeve through a circulating hole control sliding sleeve shear pin, the circulating hole control sliding sleeve is fixedly connected with the outer wall of one end of the rubber cylinder control sliding sleeve through a starting shear pin, the side wall of the other end of the rubber cylinder control sliding sleeve realizes the sealing of the flow channels, the control locking block passes through the side wall of the circulating hole control sliding sleeve and is partially embedded into the groove of the inner wall of the rubber cylinder liquid inlet nipple to realize the relative locking of the circulating hole control sliding sleeve compared with the rubber cylinder liquid inlet nipple, the outer wall of the rubber cylinder control sliding sleeve is provided with a locking block groove, when the rubber cylinder control sliding sleeve slides compared with the circulating hole control sliding sleeve, the, the central tube is fixedly sleeved in the rubber cylinder liquid inlet short section through a connecting sleeve, the hydraulic expansion rubber cylinder is sleeved on the outer wall of the central tube, the outer wall of one end of the hydraulic expansion rubber cylinder is fixedly and hermetically connected with the inner wall of the rubber cylinder liquid inlet short section, and the other end of the hydraulic expansion rubber cylinder is fixedly and hermetically arranged on the outer wall of the central tube;
when the packer is sealed in an expanding way, fluid in the packer can enter the inner cavity of the hydraulic expansion rubber sleeve through a plurality of groups of flow channels on the inner wall of the liquid inlet short section of the rubber sleeve so as to inflate the rubber sleeve;
the other end of the circulation hole sleeve is fixedly connected with the upper joint, the side wall of the circulation hole sleeve is provided with a plurality of circulation holes, the circulation holes can be shielded by the circulation hole control sliding sleeve at the initial position, and after circulation well cementation is finished, the circulation holes can be closed by a closing structure arranged in the packer.
Furthermore, the closing structure comprises a circulation hole closing piston and an inner bushing, the circulation hole closing piston is fixedly connected with the inner wall of the circulation hole sleeve through a closing piston shear pin, the inner bushing is hermetically mounted on the inner wall of the circulation hole closing piston, a closing plug seat is fixedly mounted on the inner wall of the inner bushing, and a one-way sealing assembly is fixedly arranged on the outer wall of the circulation hole closing piston, so that when the circulation hole is closed by the circulation hole closing piston moving axially, the one-way sealing assembly realizes one-way sealing between the circulation hole closing piston and the circulation hole sleeve.
Furthermore, a C-shaped locking ring is arranged on the inner wall of the circulation hole closing piston, and after the circulation hole on the circulation hole sleeve is closed by the circulation hole closing piston, stepping locking of the circulation hole closing piston is achieved through the C-shaped locking ring.
Further, the one-way sealing assembly includes a plurality of sets of sealing units, the sealing units being arrow-shaped with the arrows pointing in a downstream direction, thereby sealing pressure from an upper end of the one-way sealing assembly to isolate pressure outside the circulation sleeve.
The self-priming valve further comprises a self-priming valve seat and a self-priming valve core, wherein the self-priming valve seat is fixedly arranged on the connecting sleeve, the self-priming valve seat and the self-priming valve core are in movable connection through a spline shaft hole, a pressing cap is arranged on the self-priming valve seat, and the self-priming valve core is limited through the pressing cap.
Further, be equipped with the stair structure on the packing element control sliding sleeve outer wall, make the longitudinal section of packing element control sliding sleeve forms "protruding" font, the setting of locking piece recess is in the less external diameter end of packing element control sliding sleeve, the great external diameter end sealing of packing element control sliding sleeve is stopped up a plurality of groups runners on the packing element feed liquor nipple joint inner wall, just the stair structure can be realized right the spacing of circulation hole control sliding sleeve.
Furthermore, be equipped with the dead step of lock on the outer wall of circulation hole control sliding sleeve, make circulation hole control sliding sleeve is when axial displacement, the dead step of lock is mutually supported with packing element feed liquor nipple joint, the restriction circulation hole control sliding sleeve continues to move.
Furthermore, two ends of the hydraulic expansion rubber cylinder are respectively vulcanized with the upper rubber cylinder framework and the lower rubber cylinder framework to form a sealing assembly, one end of the sealing assembly is sleeved into the liquid inlet short section of the rubber cylinder, one end of the lower rubber cylinder framework is fixedly connected with the rubber cylinder blocking cap, the tail end of the central pipe is fixedly connected with the lower joint, and two ends of the fixed sleeve are respectively fixedly connected with the lower joint and the rubber cylinder blocking cap.
Further, the flow passages are evenly distributed in 12-16 groups.
Furthermore, at the initial position of the packer, one end of the rubber sleeve control sliding sleeve is limited by one end of the connecting sleeve, and two ends of the circulation hole closing piston are limited by the upper joint and the circulation hole control sliding sleeve respectively.
The invention has the advantages and positive effects that:
1. the invention optimizes action logic, each functional module works in series, the multistage control sliding sleeves work in series, and the expansion seal and the circulation system are controlled to be opened and closed respectively step by step, so that the problem of mutual interference of pressure gradients in independent use of each tool is avoided;
2. compared with various tools which are respectively applied to the tubular column, the integrated tool has the advantages that the relative structure is more simplified, the process tubular column is simpler, the reliability of the process and the tool can be improved, and the field operation is simpler;
3. the blind plate is integrated and internally arranged, so that the length of the left plug is reduced, the subsequent drilling and plugging construction efficiency is improved, and the cost is further reduced;
4. the tool integration design of the invention is beneficial to reducing the overall cost of the tool and improving the profit margin.
Drawings
The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a cross-sectional structural view of an initial state of a novel pressure control integrated upper-packing completion tool provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a new pressure control integrated upper packing completion tool according to an embodiment of the present invention in a configuration during a swell seal;
FIG. 3 is a structural cross-sectional view of a novel pressure control integrated upper sealing completion tool for circulation cementing according to an embodiment of the present invention;
FIG. 4 is a structural cross-sectional view of the novel pressure control integrated upper-sealing completion tool after completion of both cementing and sealing;
FIG. 5 is an enlarged view of a portion of FIG. 1 at I;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 5.
As shown in fig. 1-5, the novel sliding sleeve controlled hydraulic expansion packer provided by this embodiment includes an upper joint 1, a circulation hole sleeve 5, a circulation hole controlled sliding sleeve 8, a control lock block 11, a rubber sleeve liquid inlet short section 13, a rubber sleeve controlled sliding sleeve 12, a connecting sleeve 17, a central pipe 19, and a hydraulic expansion rubber sleeve 20, which are all hollow tubular structures; the inner wall of the rubber cylinder liquid inlet short section 13 is provided with a plurality of groups of flow channels, one end of the rubber cylinder liquid inlet short section 13 is fixedly connected with the inner wall of the upper joint 1 through threads and is fixedly connected with the outer wall of the circulation hole control sliding sleeve 8 through a circulation hole control sliding sleeve shear pin 9, the circulation hole control sliding sleeve 8 is fixedly connected with the outer wall of one end of the rubber cylinder control sliding sleeve 12 through a starting shear pin 10, the side wall of the other end of the rubber cylinder control sliding sleeve 12 realizes the sealing of the flow channels, the control locking block 11 penetrates through the side wall of the circulation hole control sliding sleeve 8 and is partially embedded into the groove of the inner wall of the rubber cylinder liquid inlet short section 13 to realize the relative limiting of the circulation hole control sliding sleeve 8 and the rubber cylinder liquid inlet short section 13, the outer wall of the rubber cylinder control sliding sleeve 12 is provided with a locking block groove, when the rubber cylinder control sliding sleeve 12 slides compared with the circulation hole control sliding sleeve 8, the, the central tube 19 is fixedly sleeved in the rubber cylinder liquid inlet short section 13 through a connecting sleeve 17, in the embodiment, the rubber cylinder liquid inlet short section 13 is sequentially connected with the connecting sleeve 17 and the central tube 19 through threads, and in an initial position, the rubber cylinder control sliding sleeve 12 is in contact with the connecting sleeve 17 and limited by the connecting sleeve 17, so that the tool is prevented from being started in advance due to pipe external pressure excitation in the tool setting process; the hydraulic expansion rubber cylinder 20 is sleeved on the outer wall of the central tube 19, the outer wall of one end of the hydraulic expansion rubber cylinder is fixedly and hermetically connected with the inner wall of the rubber cylinder liquid inlet short section 13, and the other end of the hydraulic expansion rubber cylinder is fixedly and hermetically arranged on the outer wall of the central tube 19;
when the packer works, fluid in the packer can enter the inner cavity of the hydraulic expansion rubber sleeve 20 through a plurality of groups of flow channels on the inner wall of the liquid inlet short section 13 of the rubber sleeve so as to fill and expand the fluid;
the other end of the circulation hole sleeve 5 is fixedly connected with the upper joint 1, the side wall of the circulation hole sleeve 5 is provided with a plurality of circulation holes 501, the circulation holes can be shielded by the circulation hole control sliding sleeve 8 at the initial position, and after circulation well cementation is finished, the circulation holes 501 can be closed by a closing structure arranged in the packer.
The closing structure comprises a circulation hole closing piston 3 and an inner bushing 4, the circulation hole closing piston 3 is fixedly connected with the inner wall of a circulation hole sleeve 5 through a closing piston shear pin 6, the inner bushing 4 is hermetically installed on the inner wall of the circulation hole closing piston 3, a closing plug seat 7 is fixedly installed on the inner wall of the inner bushing 4, and a one-way sealing assembly 25 is fixedly arranged on the outer wall of the circulation hole closing piston 3, so that when the circulation hole closing piston 3 axially moves to close a circulation hole 501, the one-way sealing assembly 25 realizes one-way sealing between the circulation hole closing piston 3 and the circulation hole sleeve 5; and the inner wall of the circulation hole closing piston 3 is provided with a C-shaped locking ring 2, and after the circulation hole closing piston 3 closes the circulation hole on the circulation hole sleeve 5, the circulation hole closing piston 3 is locked by the C-shaped locking ring 2 in a stepping manner.
Specifically, in this embodiment, as shown in fig. 5, the one-way sealing assembly 25 includes a plurality of sets 2501 of sealing units which are arrow-shaped and the arrows point in the downstream direction, thereby sealing the pressure from the upper end of the one-way sealing assembly 25 to isolate the pressure outside the circulation sleeve 5.
In addition, still include from irritating valve seat 15, from irritating case 16, from irritating valve seat 15 threaded connection to adapter sleeve 17 on, from irritating valve seat 15 and from irritating case 16 through spline shaft hole floating connection, install pressure cap 14 on the valve seat 15 from irritating, from irritating case 16 spacing through pressure cap 14, it needs to point out that the effect of installing from irritating valve seat 15 and from irritating case 16 is: when the pressure on the upper part of the tool rises, the contact between the self-priming valve seat 15 and the self-priming valve core 16 is used for establishing sealing, so that the pressure maintaining effect is achieved, and in the process of descending the well, the contact sealing between the self-priming valve seat 15 and the self-priming valve core 16 is released through the movement of the self-priming valve core 16, so that the function of automatically guiding slurry in a shaft into the tool is realized; the pressure cap 14, the self-filling valve seat 15 and the self-filling valve core 16 can all adopt the existing products.
In this embodiment, the stepped structure 801 is arranged on the outer wall of the rubber cylinder control sliding sleeve 12, so that the longitudinal section of the rubber cylinder control sliding sleeve 12 forms a shape like a Chinese character 'tu', the locking block groove is arranged at the smaller outer diameter end of the rubber cylinder control sliding sleeve 12, the larger outer diameter end of the rubber cylinder control sliding sleeve 12 seals and blocks a plurality of sets of flow passages on the inner wall of the rubber cylinder liquid inlet nipple 13, and the stepped structure 801 can realize the relative limit between the circulation hole control sliding sleeve 8 and the rubber cylinder control sliding sleeve 12; and, be equipped with the dead step 201 of lock on the outer wall of circulation hole control sliding sleeve 8, make circulation hole control sliding sleeve 8 is when axial displacement, the dead step 201 of lock is mutually supported with packing element feed liquor nipple 13, restricts circulation hole control sliding sleeve 8 continues to move.
The two ends of the hydraulic expansion rubber cylinder 20 are respectively vulcanized with the rubber cylinder upper framework 18 and the rubber cylinder lower framework 21 to form a sealing assembly, one end of the sealing assembly is sleeved into the rubber cylinder liquid inlet short section 13, one end of the rubber cylinder lower framework 21 is fixedly connected with the rubber cylinder blocking cap 22, the tail end of the central tube 19 is fixedly connected with the lower joint 24, and the two ends of the fixed sleeve 23 are respectively fixedly connected with the lower joint 24 and the rubber cylinder blocking cap 22; specifically, in this embodiment, skeleton 18 on hydraulic expansion packing element 20 and the packing element, skeleton 21 forms seal assembly through vulcanizing together under the packing element, embolia to in packing element feed liquor nipple joint 13, hydraulic expansion packing element 20 one end and 13 inner wall threaded connection of packing element feed liquor nipple joint, skeleton 18 and 13 inner wall sealing contact of packing element feed liquor nipple joint on the packing element, packing element keeps off on skeleton 21 under the packing element threaded connection, lower clutch 24 threaded connection is on center tube 19, fixed cover 23 keeps off cap 22 with packing element through the screw thread with lower clutch 24 and links together.
In the initial position, one end of the rubber cylinder control sliding sleeve 12 is limited by one end of the connecting sleeve 17, and two ends of the circulation hole closing piston 3 are limited by the upper connector 1 and the circulation hole control sliding sleeve 8 respectively.
In this embodiment, it is considered that the flow channel includes a liquid inlet hole 702 on the inner wall of the liquid inlet nipple 13 of the rubber cylinder and a liquid inlet pipe 703 communicated with the liquid inlet hole, wherein the liquid inlet pipe is axially distributed along the liquid inlet nipple 13 of the rubber cylinder, the flow channel may be 12 to 16 groups uniformly distributed, and the drift diameter of a single flow channel may reach 6 mm.
As shown in figure 2, after the sealing completion tool is lowered to a designed position, the sealing completion tool is pressed in a pipe, a shear pin 10 is started to cut off, a rubber sleeve control sliding sleeve 12 moves leftwards, a liquid inlet hole 702 in a rubber sleeve liquid inlet short section 13 is opened in the moving process, liquid in the pipe enters an inner cavity of a hydraulic expansion rubber sleeve 20 through a liquid inlet hole 702 and a flow channel of a rubber sleeve upper framework 18, the hydraulic expansion rubber sleeve 20 is expanded, the rubber sleeve control sliding sleeve 12 moves to the lower end of a circulation hole control sliding sleeve 8, relative limiting between the circulation hole control sliding sleeve 8 and the rubber sleeve control sliding sleeve 12 is achieved through a step structure 801, and the maximum control pressure in the process of expanding and sealing the rubber sleeve is not more than 8 MPa.
As shown in figure 3, the pressure control integrated upper sealing completion tool hydraulically expands a rubber sleeve 20 to complete expansion sealing at 11-13MPa, at the moment, the rubber sleeve control sliding sleeve 12 is positioned at the lower end of the circulation hole control sliding sleeve 8, a small diameter of the rubber sleeve control sliding sleeve 12 is provided with a locking block groove for controlling the locking block 11 to move in a retraction manner, the control locking block 11 is controlled to move in the retraction manner, the circulation hole control sliding sleeve shear pin 9 is sheared by pressure, the circulation hole control sliding sleeve 8 drives the rubber sleeve control sliding sleeve 12 to move together, the strip-shaped circulation hole 501 in the circulation hole sleeve 5 is opened in the movement process, a well cementation flow channel is established, the flow channel in the rubber sleeve liquid inlet short section 13 is closed by driving the rubber sleeve control sliding sleeve 12 to return, the sealing system is closed, and overpressure failure of the sealing system is avoided.
As shown in figure 4, the pressure control integrated upper sealing completion tool of the invention starts the upper circulating well cementation process after the circulating hole is opened, after the cement slurry is injected, the cement slurry is replaced by a self-locking well cementation closing plug 26, the self-locking well cementation closing plug 26 stops the lower pressure after reaching the position of a closing plug seat 7, the pressure acts on a circulating hole closing piston 3 through a overflowing groove of an inner bushing 4, the closing piston shear pin 6 is sheared by the impact pressure of 18MPa, the circulating hole closing piston 3 is made to move downwards fully, a circulating hole 501 on a circulating hole sleeve 5 is closed, the C-shaped lock ring 2 realizes stepping locking in the moving process of the circulating hole closing piston 3, after the circulating hole closing piston 3 is in place, the lower end limits the circulating hole control sliding sleeve 8, the lower end of the circulating hole control sliding sleeve 8 limits the rubber sleeve control sliding sleeve 12, after the circulating hole closing piston 3 is locked by the C-shaped lock ring 2, the circulating hole control sliding sleeve 8 and the rubber sleeve control sliding sleeve 12 are, and locking the whole system.
As shown in fig. 5, in order to make the motion process of the circulation hole closing piston 3 smooth and avoid the motion blockage caused by compressing the sealing cavity, the lower end of the circulation hole closing piston 3 is designed with a special one-way sealing assembly 25, in this embodiment, the one-way sealing assembly 25 includes 3 sets of sealing units 2501, the shape of the contact surface of the sealing unit 2501 and the circulation hole closing piston 3 is a plane, the contact surface with the circulation hole sleeve 5 is an arrow head shape, the arrow head points downward, and the pressure from the upper end of the sealing assembly can be sealed to isolate the pressure outside the circulation hole sleeve 5, thereby avoiding the backflow of cement slurry, and having the characteristic of one-way sealing, so that the sealing cavity cannot be formed during the downward motion process of the circulation hole closing piston 3 to influence the motion.
It should be noted that, for the pressure control integrated upper sealing completion tool of the present invention, in order to achieve the sealing performance of the tool, a sealing structure may be added between different structural components according to actual requirements, which belongs to common knowledge that can be thought by those skilled in the art, and will not be described herein again.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a novel pressure control integral type upper portion seals completion tool which characterized in that: the hydraulic expansion rubber cylinder comprises an upper joint, a circulation hole sleeve, a circulation hole control sliding sleeve, a control locking block, a rubber cylinder liquid inlet short section, a rubber cylinder control sliding sleeve, a connecting sleeve, a central pipe and a hydraulic expansion rubber cylinder which are all in a hollow tubular structure; the inner wall of the rubber cylinder liquid inlet nipple is provided with a plurality of groups of flow channels, one end of the rubber cylinder liquid inlet nipple is fixedly connected with the inner wall of one end of the circulating hole sleeve and is fixedly connected with the outer wall of the circulating hole control sliding sleeve through a circulating hole control sliding sleeve shear pin, the circulating hole control sliding sleeve is fixedly connected with the outer wall of one end of the rubber cylinder control sliding sleeve through a starting shear pin, the side wall of the other end of the rubber cylinder control sliding sleeve realizes the sealing of the flow channels, the control locking block passes through the side wall of the circulating hole control sliding sleeve and is partially embedded into the groove of the inner wall of the rubber cylinder liquid inlet nipple to realize the relative locking of the circulating hole control sliding sleeve compared with the rubber cylinder liquid inlet nipple, the outer wall of the rubber cylinder control sliding sleeve is provided with a locking block groove, when the rubber cylinder control sliding sleeve slides compared with the circulating hole control sliding sleeve, the, the central tube is fixedly sleeved in the rubber cylinder liquid inlet short section through a connecting sleeve, the hydraulic expansion rubber cylinder is sleeved on the outer wall of the central tube, the outer wall of one end of the hydraulic expansion rubber cylinder is fixedly and hermetically connected with the inner wall of the rubber cylinder liquid inlet short section, and the other end of the hydraulic expansion rubber cylinder is fixedly and hermetically arranged on the outer wall of the central tube;
when the packer is sealed in an expanding way, fluid in the packer can enter the inner cavity of the hydraulic expansion rubber sleeve through a plurality of groups of flow channels on the inner wall of the liquid inlet short section of the rubber sleeve so as to inflate the rubber sleeve;
the other end of the circulation hole sleeve is fixedly connected with the upper joint, the side wall of the circulation hole sleeve is provided with a plurality of circulation holes, the circulation holes can be shielded by the circulation hole control sliding sleeve at the initial position, and after circulation well cementation is finished, the circulation holes can be closed by a closing structure arranged in the packer.
2. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the closing structure comprises a circulation hole closing piston and an inner bushing, the circulation hole closing piston is fixedly connected with the inner wall of the circulation hole sleeve through a closing piston shear pin, the inner bushing is mounted on the inner wall of the circulation hole closing piston in a sealing mode, a closing plug seat is fixedly mounted on the inner wall of the inner bushing, and a one-way sealing assembly is fixedly arranged on the outer wall of the circulation hole closing piston, so that when the circulation hole is closed by axial movement of the circulation hole closing piston, the one-way sealing assembly achieves one-way sealing between the circulation hole closing piston and the circulation hole sleeve.
3. The novel pressure control integrated upper packing completion tool of claim 2, wherein: and after the circulation hole on the circulation hole sleeve is closed by the circulation hole closing piston, the circulation hole closing piston is locked step by the C-shaped locking ring.
4. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the one-way sealing assembly includes a plurality of sets of sealing units, the sealing units being arrow-shaped with the arrows pointing in a downstream direction to seal pressure from an upper end of the one-way sealing assembly to isolate pressure outside the circulating bore casing.
5. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the self-priming valve comprises a self-priming valve seat and a self-priming valve core, wherein the self-priming valve seat is fixedly arranged on the connecting sleeve, the self-priming valve seat is movably connected with the self-priming valve core through a spline shaft hole, a pressing cap is arranged on the self-priming valve seat, and the self-priming valve core is limited through the pressing cap.
6. The novel pressure control integrated upper packing completion tool of claim 1, wherein: be equipped with the stair structure on the packing element control sliding sleeve outer wall, make the longitudinal section of packing element control sliding sleeve forms "protruding" font, the setting of locking piece recess is in the less external diameter end of packing element control sliding sleeve, the sealed a plurality of groups runners of packing element control sliding sleeve great external diameter end on the packing element feed liquor nipple joint inner wall is plugged up, just the stair structure can be realized right the spacing of circulation hole control sliding sleeve.
7. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the outer wall of the circulation hole control sliding sleeve is provided with a locking step, so that when the circulation hole control sliding sleeve moves axially, the locking step is matched with the rubber barrel liquid inlet short section to limit the circulation hole control sliding sleeve to move continuously.
8. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the hydraulic expansion rubber sleeve is characterized in that two ends of the hydraulic expansion rubber sleeve are respectively vulcanized with an upper rubber sleeve framework and a lower rubber sleeve framework to form a sealing assembly, one end of the sealing assembly is sleeved into a liquid inlet short section of the rubber sleeve, one end of the lower rubber sleeve framework is fixedly connected with a rubber sleeve blocking cap, the tail end of a central tube is fixedly connected with a lower joint, and two ends of a fixed sleeve are respectively fixedly connected with the lower joint and the rubber sleeve blocking cap.
9. The novel pressure control integrated upper packing completion tool of claim 1, wherein: the flow passages are evenly distributed in 12-16 groups.
10. A novel pressure control integrated upper seal completion tool according to claim 2 or 3, wherein: at the initial position of the packer, one end of the rubber sleeve control sliding sleeve is limited by one end of the connecting sleeve, and two ends of the circulation hole closing piston are limited by the upper joint and the circulation hole control sliding sleeve respectively.
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| CN202010799008.4A CN111749642B (en) | 2020-08-11 | 2020-08-11 | Novel pressure control integrated upper sealing well completion tool |
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| CN202010799008.4A CN111749642B (en) | 2020-08-11 | 2020-08-11 | Novel pressure control integrated upper sealing well completion tool |
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| CN111749642B CN111749642B (en) | 2022-03-11 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846742Y (en) * | 2005-09-24 | 2006-12-13 | 辽河石油勘探局 | Positioning cementing well water injection ement switch |
| US20100051276A1 (en) * | 2008-09-04 | 2010-03-04 | Rogers Henry E | Stage cementing tool |
| CN102337853A (en) * | 2011-08-31 | 2012-02-01 | 程显达 | Circulating drilling-free blind plate cementing device |
| US20140238689A1 (en) * | 2013-02-25 | 2014-08-28 | Resource Well Completion Technologies Inc. | Wellbore Packer And Method |
| CN104110234A (en) * | 2014-07-31 | 2014-10-22 | 于世江 | Method for well cementation drilling-free blind plate circulating well cementation of horizontal well |
| CN205977172U (en) * | 2016-08-26 | 2017-02-22 | 中国石油化工股份有限公司 | A inflation formula cement injection device for screen pipe crest water flooding bricklayer skill |
| CN210948578U (en) * | 2019-09-30 | 2020-07-07 | 宝鸡市元亨石油设备有限责任公司 | Hydraulic pressure controlled negative pressure flow packer |
-
2020
- 2020-08-11 CN CN202010799008.4A patent/CN111749642B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2846742Y (en) * | 2005-09-24 | 2006-12-13 | 辽河石油勘探局 | Positioning cementing well water injection ement switch |
| US20100051276A1 (en) * | 2008-09-04 | 2010-03-04 | Rogers Henry E | Stage cementing tool |
| CN102337853A (en) * | 2011-08-31 | 2012-02-01 | 程显达 | Circulating drilling-free blind plate cementing device |
| US20140238689A1 (en) * | 2013-02-25 | 2014-08-28 | Resource Well Completion Technologies Inc. | Wellbore Packer And Method |
| CN104110234A (en) * | 2014-07-31 | 2014-10-22 | 于世江 | Method for well cementation drilling-free blind plate circulating well cementation of horizontal well |
| CN205977172U (en) * | 2016-08-26 | 2017-02-22 | 中国石油化工股份有限公司 | A inflation formula cement injection device for screen pipe crest water flooding bricklayer skill |
| CN210948578U (en) * | 2019-09-30 | 2020-07-07 | 宝鸡市元亨石油设备有限责任公司 | Hydraulic pressure controlled negative pressure flow packer |
Non-Patent Citations (3)
| Title |
|---|
| 刘明等: "封隔式分级注水泥器关键技术分析", 《石油矿场机械》 * |
| 李梅等: "连续管无限极滑套分段压裂技术在苏里格的应用", 《石油机械》 * |
| 田启忠等: "分级注水泥技术的改进与应用", 《石油机械》 * |
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