CN201568013U - Two-stage cementer free from drilling - Google Patents
Two-stage cementer free from drilling Download PDFInfo
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- CN201568013U CN201568013U CN200920246521XU CN200920246521U CN201568013U CN 201568013 U CN201568013 U CN 201568013U CN 200920246521X U CN200920246521X U CN 200920246521XU CN 200920246521 U CN200920246521 U CN 200920246521U CN 201568013 U CN201568013 U CN 201568013U
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Abstract
The utility model provides a two-stage cementer free from drilling, and belongs to the field of two-stage well cementation of sleeves of deep wells and ultradeep wells. The two-stage cementer comprises a two-stage hoop (101), a closing plug (102) and a lower rubber plug (103). After the two-stage well cementation is completed by utilizing the cementer, upper and lower sliding bushes in the two-stage hoop and the closing plug are connected together and automatically fall into the bottom of a well through pressure, and a small-sized drilling rod and a drilling bit are not required to be repeatedly placed after the well completion; the cementer can be used to open circulating openings under the hydraulic and mechanical actions, at the same time, the circulating openings can be guaranteed to be opened and closed smoothly; in addition, any one sealing ring in the two-stage hoop can be detected accurately whether damaged or not; and moreover, the two-stage hoop body and an inner sleeve has relatively thicker effective thickness, so that the tensile strength, the internal pressure and external pressure resistance of the two-stage hoop are improved.
Description
Technical field
The utility model belongs to deep-well, ultradeep well sleeve pipe two-stage cementing field, is specifically related to a kind of two-stage cementing tool of exempting to bore.
Background technology
The oil gas water well that is bored on the oil field behind the finishing drilling setting of casing, need carry out well cementing operation, meets tomography, seepage well Duan Shixu well cementing operation at twice.For ultradeep well, because ground installation power is limited, also need well cementation successively, therefore all need two-stage cementing tool.
At present, two-stage cementing tool instrument commonly used comprises twin-stage hoop body and engagement tool thereof, and it mainly comprises body, sealing ring, closes cover, upper sliding sleeve, low sleeve, lower contact, bottom plug, open plug, shut-off plug or the like.The cardinal principle of the two-stage cementing tool of this structure is: after the one-level cement paste injects, discharge bottom plug and replace in the annular distance gap of cement paste to the twin-stage hoop; After the one-level well cementation end, open plug from the well head input, seat is in twin-stage hoop low sleeve and formation sealing, and well head builds the pressure, and subtracting breaks opens shear pin, and circulation port is opened, and inside and outside foundation of sleeve pipe circulated, for the secondary cementing is prepared; After second level cementing finishes, be pressed into shut-off plug for mud, close shear pin and make that to close cover descending until closing obturating plug on twin-stage hoop upper sliding sleeve, build the pressure to cut off, realize that twin-stage hoop circulation port forever closes.After Hou Ning finishes, following brill with upper sliding sleeve, low sleeve, the shut-off plug of twin-stage hoop inside, open plug, bottom plug bores.This two-stage cementing tool instrument when it being used when cementing the well with production string, needs manyly to bore next time, removes unnecessary parts in the well cementation rear sleeve to bore, and has increased drilling cost.In addition, φ 127mm drilling rod is used in drilling well at present more, and its joint external diameter is φ 165mm, and production string is generally φ 140mm, so just must send macaroni from the base in addition, this not only makes the outer drilling tool rent of drilling rod unit in charge of construction commitment, has brought certain difficulty also for the organization work of drilling well.
In the prior art, the patent No. be 99200859.X patent disclosure a kind of from the latus rectum stage cementing device, the opening and closing circulation port of its twin-stage hoop is by opening cover and closing two component of cover and finish jointly, and whether it has the following disadvantages: close the sealing ring that puts and damage after assembling and can not effectively be detected; Open cover top sealing ring and will pass through the pin surface of shear, sealing ring may be damaged and cause seal failure; Close the cover descending close the circulation sky after, pin can make this inside and outside communicate; After closing descending the closing of cover, not anti-unloading device can not guarantee that circulation port is in permanent closed state; The intrinsic ball of shut-off plug and close cover and can not form self-locking between the body is so again for occurring in the slurry process for empty phenomenon.The patent No. a kind of two-stage cementing tool instrument that has been 96204407.5 patent disclosure, it has the following disadvantages: cover was formed for three layers in this kind two-stage cementing tool instrument overlapped by inner core, overcoat with in going up and reaches down, because interior external diameter is fixed, every layer of component effective thickness attenuation like this, intensity are difficult to guarantee; At the scene in the application process, have a large amount of deposits in the opening plug groove and that top cement plug and opening plug are difficult to is compound, top cement plug can't put in place, therefore the phenomenon that the glue bowl is blocked pressure transmission hole may occur, thereby causes the closing motion failure.The patent No. a kind of two-stage cementing tool that has been 89215982.0 patent disclosure, it has the following disadvantages: on switch cover circulation port top two row's sealing rings are arranged, whether there is vacuum phenomenon in sealing ring, can not detect sealing ring after the assembling simultaneously and damage; When using at the scene, when opening the dislocation hole, may cut off simultaneously to cut off and realize closing the dislocation hole, cause circulation port to be closed in advance.
The utility model content
The purpose of this utility model is to solve a difficult problem that exists in the above-mentioned prior art, a kind of two-stage cementing tool of exempting to bore is provided, be used for the production string well cementation, use this device to need not to descend small size drilling rod, bit drills to remove twin-stage hoop and the unnecessary parts of inside pipe casing again after the completion.
The utility model is achieved through the following technical solutions:
A kind ofly exempt to bore two-stage cementing tool, comprise twin-stage hoop 101, shut-off plug 102 and bottom plug 103.
Described twin-stage hoop 101 comprises top connection 1, body 2, interior cover 5, position block 7, location jump ring 8, upper sliding sleeve 10, low sleeve 26 and shrinks block 32.
Described body 2, interior cover 5, upper sliding sleeve 10 and low sleeve 26 are cylindric, in the tube of described body 2, be provided with described in cover 5, it passes through outer pin 17 with body 2 and locatees; In described in the tube of cover 5, cover 5 top in upper sliding sleeve 10 is fixed on by interior pin 6, the bottom of cover 5 in low sleeve 26 is fixed on by described contraction block 32 is shunk block 32 and is used to limit low sleeve 26 and jumps up and down.
Have the block groove at the inwall of described body 2, the described block trench bottom of going up has block groove lower shoulder 11; Below last block groove, have block groove 14 down; Described outer pin 17 is positioned at the described below of block groove 14 down; Body 2 inwalls outside described below the pin 17 have body jump ring groove 19; Below described body jump ring groove 19, have the body circulation port 23 of perforation; Below described body circulation empty 23, have body lower shoulder 30, below body lower shoulder 30, have and shrink block groove 34.
On the tube wall of cover 5, described interior pin 6 belows are provided with position block 7 in described, and described position block 7 has down chamfering 9; Cover jump ring groove 12 in interior cover 5 inwalls below described position block 7 have; On the tube wall of cover 5, interior cover 5 outer walls of interior cover jump ring groove 12 belows are provided with spacing jump ring 16 in described; Have the interior cover circulation port 22 of perforation in below described spacing jump ring 16 on the tube wall of cover 5; Described contraction block 32 is arranged on the below of described interior cover circulation port 22; Cover upper shoulder 24 in having on interior cover 5 outer walls between described contraction block 32 and interior cover circulation port 22; Form cavity volume between cover upper shoulder 24 and the described body lower shoulder 30 in described.
Be provided with location jump ring 8 in the outer wall of described upper sliding sleeve 10 and described position block 7 corresponding positions.Location jump ring 8 circumferential fixed position blocks 7 prevent that position block 7 from inwardly shrinking under assembled state.
Inwall at described low sleeve 26 has low sleeve jump ring groove 25.
The part of cover 5 was positioned at the described block groove of going up in described position block 7 outwards protruded in.
Described shut-off plug 102 comprises cock body 45 and wedge shape plunger 43; The upper inside wall of described cock body 45 is provided with the conical surface 42, and described wedge shape plunger 43 moves on the conical surface 42 on described.
Describedly exempt to bore two-stage cementing tool and comprise copper ball 27; At described low sleeve 26 inwalls, the below of described low sleeve jump ring groove 25 has the low sleeve conical surface 29.
Be provided with spacer ring between cover 5 and the upper sliding sleeve 10 in described, the described spacer ring of going up is positioned at described cover circulation port 22 tops; Cover 5 inwalls are provided with the Yx seal groove in described, and Yx sealing ring 15 is housed in the seal groove on described, the described described spacer ring of going up of Yx sealing ring 15 sealings of going up; Be provided with spacer ring down in described between cover 5 and the low sleeve 26, described spacer ring down is positioned at empty 22 belows of described cover circulation; Cover 5 inwalls are provided with Yx seal groove down in described, and Yx sealing ring 21 down is housed in described lower seal groove cavity, the described spacer ring down of described Yx sealing ring down 21 sealings.The bottom of cover 5 is provided with cotter slot 37 in described, and anti-rotation pin 36 is housed in described cotter slot, and described anti-rotation pin 36 passes the tube wall of described body 2, and cover circulation port 22 is in body circulation port 23 circumferential misalignment in being used to prevent.The setting of described upper and lower spacer ring is to have the gap in order to guarantee between upper sliding sleeve 10 and low sleeve 26 and the interior cover 5, and like this, upper sliding sleeve 10 and low sleeve 26 come off easily.
Between described top connection 1 and body 2, sealing ring is housed; In described, between cover 5 and the body 2 one group of sealing ring is housed, its be respectively on described sealing ring 13 between the groove between block groove and the following block groove 14, described in, overlap hole lower seal 20 and the shoulder lower seal 31 between described body lower shoulder 30 and contraction block 32 below sealing ring 18, the interior cover circulation port 22 on the hole above the circulation port 22; On the tube wall of described body 2, have two pressure transmission holes, one on sealing ring 13 and the hole between described groove between the sealing ring 18 on pressure transmission hole 38, another is a following pressure transmission hole 28 between cover upper shoulder 24 and the described body lower shoulder 30 in described.The described pressure transmission hole 38 of going up is used to prevent form vacuum between the sealing ring 18 on the sealing ring 13 and hole between groove, and down pressure transmission hole 28 be used to prevent described in cover upper shoulder 24 form dead space with cavity volume between the described body lower shoulder 30, thereby normally the opening of assurance hydraulic pressure.
Difference gap between described upper sliding sleeve 10, low sleeve 26 and the interior cover 5 is 4mm.
Described top connection 1 is cylindric, and its upper inside wall has casing threads 50, and the bottom outer wall is fixed on the top of the described interior cover 5 in the body 2 by external screw thread; Outer wall bottom at described body 2 has casing threads 35.
Sleeve pipe that is connected with casing threads 35 and interior cover 5 are same internal diameters, therefore, the setting of described upper and lower spacer ring also is to have the gap in order to guarantee between upper sliding sleeve 10 and low sleeve 26 and the sleeve pipe that casing threads 35 is connected, and like this, upper sliding sleeve 10 and low sleeve 26 slippages are easier.
Described shut-off plug 102 comprises plug tail 39, shut-off plug sealing ring 40, glue bowl 44, retaining ring 46; Described plug tail 39 inwalls are connected with the outer wall top of cock body 45 by screw thread; Described shut-off plug sealing ring 40 is arranged on the outer wall of described plug tail 39; One group of projection is arranged on the outer wall of described cock body 45, and described glue bowl 44 is fixed on the projection outer wall of described cock body 45; Be provided with retaining ring 46 in the bottom of described cock body 45.
In actual use, twin-stage hoop 101 is connected with bunch tube by casing threads and following preposition in the well.After having annotated first order cement, bottom plug 103 is dropped in the sleeve pipe from well head, injecting mud makes bottom plug 103 descending, pass the twin-stage hoop to the shaft bottom bruising, when pressure greatly to when setting value, the pressure differential between the interior cover 5 pressured poor faces (section area of interior cover 5 upper shoulders 24) is cut off outer pin 17, the following chamfering 9 of position block 7 moves to block groove lower shoulder 11, this moment, body circulation port 23 communicated with interior cover circulation port 22, and promptly body circulation port 23 is opened, and twin-stage hoop 101 inside and outside foundation are circulated; When pressure can't be set up and pressured difference can't open body circulation port 23 time, drop into copper ball 27, copper ball 27 passes mud by self gravitation and falls on the low sleeve conical surface 29 of low sleeve 26, form sealing, build the pressure in the sleeve pipe, cut off outer pin 17, finish the opening action of above-mentioned body circulation port 23 then.
Circulate unimpeded after, annotate second level cement.After having annotated second level cement, shut-off plug 102 is dropped in the sleeve pipe, for mud, when the plug tail 39 of shut-off plug 102 moves to upper sliding sleeve 10, shut-off plug sealing ring 40 forms sealing with upper sliding sleeve 10 inwalls, continue to build the pressure, pin 6 in cutting off, shut-off plug 102 contacts with the last section of low sleeve 26 with the following section that upper sliding sleeve 10 comes downwards to upper sliding sleeve 10, retaining ring 46 on this moment shut-off plug 102 cock bodys 45 springs in the low sleeve jump ring groove 25 in the low sleeve 26, in the interior cover jump ring groove 12 in location jump ring 8 on the upper sliding sleeve 10 springs on the cover 5, position block 7 shrinks, this moment shut-off plug 102, upper sliding sleeve 10 and low sleeve 26 form one, under pressure, drive the interior cover 5 descending body circulation ports 23 of closing by shrinking block 32, the spacing jump ring 16 of cover 5 outer walls springs in the body jump ring groove 19 on the body 2 in this moment, simultaneously, shrink block 32 and be pushed in the contraction block groove 34 on the body 2, position block 7 is to spring into down in the block groove 14.Like this, component such as shut-off plug 102, upper sliding sleeve 10 and low sleeve 26 together fall into the shaft bottom by continuing in the sleeve pipe to build the pressure, and make no obstruction in the twin-stage hoop, can carry out subsequent job.
In use, when the shut-off plug upper pressure is high, cock body 45 self-lockings of wedge shape plunger 43 and shut-off plug, the assurance circulation port is closed smoothly, avoids simultaneously for occurring in the slurry process for empty phenomenon, when parts such as shut-off plug fall voluntarily, bottom pressure height, wedge shape plunger 43 is formed same passage up and down by jack-up, and parts non-resistances such as shut-off plug come downwards to the shaft bottom.
In the utility model, axle guarantees the circulation port smooth opening and closes that specifically, following Yx sealing ring 21 is used to guarantee build-up pressure when machinery is opened, and opens circulation port with Yx sealing ring one-way sealing; Last Yx sealing ring 15 is used to guarantee enter upper sliding sleeve 10 back build-up pressures at shut-off plug 102, closes circulation port.The effect of described each sealing ring is: being in before opening circulation port that sealing state guarantees in the opening procedure can build-up pressure; Being in sealing state after closing circulation port guarantees not communicate inside and outside the sleeve pipe.In addition, in the utility model,, whether be in serviceable condition so just can accurately detect sealing ring by the pressure testing after the assembling because be equipped with pressure transmission hole or circulation port between each sealing ring.
Compared with prior art, the beneficial effects of the utility model are: after (1) two-stage cementing finished, sliding sleeve up and down and shut-off plug in the twin-stage hoop connected as one, and fall into the shaft bottom voluntarily by the pressure effect, need not heavily descend small size drilling rod and drill bit after the completion; (2) circulation port is opened in hydraulic pressure, mechanical double acting; (3) position block and location jump ring acting in conjunction have guaranteed that circulation port opens fully; Axle has guaranteed the circulation port smooth opening and has closed with Yx sealing ring one-way sealing; Shrink block and guaranteed that circulation port closes fully; (4) whether any one sealing ring in the twin-stage hoop all can accurately be detected and be damaged; (5) external diameter is fixed in the twin-stage hoop, so body is relative thicker with the effective thickness of interior cover, thereby has improved the tensile strength of twin-stage hoop, anti-interior the pressure and collapse resistance.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the front view of the utility model twin-stage hoop.
Fig. 2 is the front view of the utility model shut-off plug.
Fig. 3 is the front view of the utility model bottom plug.
The specific embodiment
A kind ofly exempt to bore two-stage cementing tool, comprise twin-stage hoop 101, shut-off plug 102 and bottom plug 103.
Described twin-stage hoop 101 comprises top connection 1, body 2, interior cover 5, position block 7, location jump ring 8, upper sliding sleeve 10, low sleeve 26 and shrinks block 32 as shown in Figure 1.
Described body 2, interior cover 5, upper sliding sleeve 10 and low sleeve 26 are cylindric, in the tube of described body 2, be provided with described in cover 5, it passes through outer pin 17 with body 2 and locatees; In described in the tube of cover 5, cover 5 top in upper sliding sleeve 10 is fixed on by interior pin 6, the bottom of cover 5 in low sleeve 26 is fixed on by described contraction block 32 is shunk block 32 and is used to limit low sleeve 26 and jumps up and down.
Have the block groove at the inwall of described body 2, the described block trench bottom of going up has block groove lower shoulder 11; Below last block groove, have block groove 14 down; Described outer pin 17 is positioned at the described below of block groove 14 down; Body 2 inwalls outside described below the pin 17 have body jump ring groove 19; Have the body circulation port 23 of perforation below described body jump ring groove 19, described body circulation port 23 has 6, circumferentially is distributed on the tube wall of body 2; Below described body circulation empty 23, have body lower shoulder 30, below body lower shoulder 30, have and shrink block groove 34.
On the tube wall of cover 5, described interior pin 6 belows are provided with position block 7 in described, and described position block 7 has down chamfering 9; Cover jump ring groove 12 in interior cover 5 inwalls below described position block 7 have; On the tube wall of cover 5, interior cover 5 outer walls of interior cover jump ring groove 12 belows are provided with spacing jump ring 16 in described; Have the interior cover circulation port 22 of perforation in below described spacing jump ring 16 on the tube wall of cover 5, described interior cover circulation port 22 has 6, circumferentially is distributed on the tube wall of interior cover 5; Described contraction block 32 is arranged on the below of described interior cover circulation port 22; Cover upper shoulder 24 in having on interior cover 5 outer walls between described contraction block 32 and interior cover circulation port 22; Form cavity volume between cover upper shoulder 24 and the described body lower shoulder 30 in described.
Be provided with location jump ring 8 in the outer wall of described upper sliding sleeve 10 and described position block 7 corresponding positions.Location jump ring 8 circumferential fixed position blocks 7 prevent that position block 7 from inwardly shrinking under assembled state.
Inwall at described low sleeve 26 has low sleeve jump ring groove 25.
The part of cover 5 was positioned at the described block groove of going up in described position block 7 outwards protruded in.
Described shut-off plug 102 as shown in Figure 2, comprises cock body 45 and wedge shape plunger 43; The upper inside wall of described cock body 45 is provided with the conical surface 42, and described wedge shape plunger 43 moves on the conical surface 42 on described.
Describedly exempt to bore two-stage cementing tool and comprise copper ball 27; At described low sleeve 26 inwalls, the below of described low sleeve jump ring groove 25 has the low sleeve conical surface 29.
Be provided with spacer ring between cover 5 and the upper sliding sleeve 10 in described, the described spacer ring of going up is positioned at described cover circulation port 22 tops; Cover 5 inwalls are provided with the Yx seal groove in described, and Yx sealing ring 15 is housed in the seal groove on described, the described described spacer ring of going up of Yx sealing ring 15 sealings of going up; Be provided with spacer ring down in described between cover 5 and the low sleeve 26, described spacer ring down is positioned at empty 22 belows of described cover circulation; Cover 5 inwalls are provided with Yx seal groove down in described, and Yx sealing ring 21 down is housed in described lower seal groove cavity, the described spacer ring down of described Yx sealing ring down 21 sealings; The bottom of cover 5 is provided with cotter slot 37 in described, and anti-rotation pin 36 is housed in described cotter slot, and described anti-rotation pin 36 passes the tube wall of described body 2, and cover circulation port 22 is in body circulation port 23 circumferential misalignment in being used to prevent.
Between described top connection 1 and body 2, sealing ring is housed; In described, between cover 5 and the body 2 one group of sealing ring is housed, its be respectively on described sealing ring 13 between the groove between block groove and the following block groove 14, described in, overlap hole lower seal 20 and the shoulder lower seal 31 between described body lower shoulder 30 and contraction block 32 below sealing ring 18, the interior cover circulation port 22 on the hole above the circulation port 22; On the tube wall of described body 2, have two pressure transmission holes, one on sealing ring 13 and the hole between described groove between the sealing ring 18 on pressure transmission hole 38, another is a following pressure transmission hole 28 between cover upper shoulder 24 and the described body lower shoulder 30 in described.The described pressure transmission hole 38 of going up is used to prevent form vacuum between the sealing ring 18 on the sealing ring 13 and hole between groove, and down pressure transmission hole 28 be used to prevent described in cover upper shoulder 24 form dead space with cavity volume between the described body lower shoulder 30, thereby normally the opening of assurance hydraulic pressure.
Difference gap between described upper sliding sleeve 10, low sleeve 26 and the interior cover 5 is 4mm.
Described top connection 1 is cylindric, and its upper inside wall has casing threads 50, and the bottom outer wall is fixed on the top of the described interior cover 5 in the body 2 by external screw thread; Outer wall bottom at described body 2 has casing threads 35.
Described shut-off plug 102 comprises plug tail 39, shut-off plug sealing ring 40, glue bowl 44, retaining ring 46; Described plug tail 39 inwalls are connected with the outer wall top of cock body 45 by screw thread; Described shut-off plug sealing ring 40 is arranged on the outer wall of described plug tail 39; One group of bowl-shape projection is arranged on the outer wall of described cock body 45, and described glue bowl 44 is fixed on the bowl-shape projection outer wall of described cock body 45; Be provided with retaining ring 46 in the bottom of described cock body 45.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art, on the basis that the utility model discloses application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned specific embodiment of the utility model, therefore previously described mode is preferably, and does not have restrictive meaning.
Claims (7)
1. exempt to bore two-stage cementing tool for one kind, comprise twin-stage hoop (101), shut-off plug (102) and bottom plug (103), it is characterized in that,
Described twin-stage hoop (101) comprises top connection (1), body (2), interior cover (5), position block (7), location jump ring (8), upper sliding sleeve (10), low sleeve (26) and shrinks block (32);
Described body (2), interior cover (5), upper sliding sleeve (10) and low sleeve (26) are cylindric, in the tube of described body (2), be provided with described in cover (5), it passes through outer pin (17) with body (2) and locatees; In the tube of cover (5), upper sliding sleeve (10) is fixed on the top of interior cover (5) by interior pin (6) in described, and low sleeve (26) is fixed on the bottom of interior cover (5) by described contraction block (32);
Inwall at described body (2) has the block groove, and the described block trench bottom of going up has block groove lower shoulder (11); Below last block groove, have block groove (14) down; Described outer pin (17) is positioned at the described below of block groove (14) down; Body (2) inwall of pin outside described (17) below has body jump ring groove (19); Have the body circulation port (23) of perforation in described body jump ring groove (19) below; Have body lower shoulder (30) in described body circulation empty (23) below, have in the below of body lower shoulder (30) and shrink block groove (34);
On the tube wall of cover (5), described interior pin (6) below is provided with position block (7) in described, and described position block (7) has down chamfering (9); Cover jump ring groove (12) in interior cover (5) inwall of described position block (7) below has; On the tube wall of cover (5), interior cover (5) outer wall of interior cover jump ring groove (12) below is provided with spacing jump ring (16) in described; In the below of described spacing jump ring (16), have the interior cover circulation port (22) of perforation on the tube wall of cover (5); Described contraction block (32) is arranged on the below of described interior cover circulation port (22); Cover upper shoulder (24) in having on interior cover (5) outer wall between described contraction block (32) and interior cover circulation port (22); Form cavity volume between cover upper shoulder (24) and the described body lower shoulder (30) in described;
Be provided with location jump ring (8) in the outer wall of described upper sliding sleeve (10) position corresponding with described position block (7);
Inwall at described low sleeve (26) has low sleeve jump ring groove (25);
The part that described position block (7) outwards protrudes in interior cover (5) is positioned at the described block groove of going up;
Cover circulation port (22) is positioned at the top of described body circulation port (23) in described, and the distance between its center and body circulation port (23) center equals the distance of the following chamfering (9) of described position block (7) to described block groove lower shoulder (11);
Described shut-off plug (102) comprises cock body (45) and wedge shape plunger (43); The upper inside wall of described cock body (45) is provided with the conical surface (42), and described wedge shape plunger (43) conical surface (42) on described is gone up and moved.
2. according to claim 1ly exempt to bore two-stage cementing tool, it is characterized in that, describedly exempt to bore two-stage cementing tool and comprise copper ball (27); At described low sleeve (26) inwall, the below of described low sleeve jump ring groove (25) has the low sleeve conical surface (29).
3. according to claim 1 and 2ly exempt to bore two-stage cementing tool, it is characterized in that, in described, be provided with spacer ring between cover (5) and the upper sliding sleeve (10), described on spacer ring be positioned at above the described cover circulation port (22); Cover (5) inwall is provided with the Yx seal groove in described, and Yx sealing ring (15) is housed in the seal groove on described, the described described spacer ring of going up of Yx sealing ring (15) sealing of going up; Be provided with spacer ring down in described between cover (5) and the low sleeve (26), described spacer ring down is positioned at described cover circulation empty (22) below; Cover (5) inwall is provided with Yx seal groove down in described, and Yx sealing ring (21) down is housed in described lower seal groove cavity, the described spacer ring down of described Yx sealing ring (21) sealing down; The bottom of cover (5) is provided with cotter slot (37) in described, and anti-rotation pin (36) is housed in described cotter slot, and described anti-rotation pin (36) passes the tube wall of described body (2).
4. according to claim 3ly exempt to bore two-stage cementing tool, it is characterized in that, between described top connection (1) and body (2), sealing ring is housed; In described, between cover (5) and the body (2) one group of sealing ring is housed, its be respectively be positioned at sealing ring (13) between the described groove of going up between block groove and the following block groove (14), be positioned at the hole lower seal (20) below sealing ring (18), the cover circulation port (22) on the described hole of overlapping above the circulation port (22) and be positioned at described body lower shoulder (30) and contraction block (32) between shoulder lower seal (31); On the tube wall of described body (2), have two pressure transmission holes, one is to be positioned at the last pressure transmission hole (38) between the sealing ring (18) on sealing ring between described groove (13) and the hole, and another is the following pressure transmission hole (28) that is positioned between described cover upper shoulder (24) and the described body lower shoulder (30).
5. according to claim 4ly exempt to bore two-stage cementing tool, it is characterized in that the difference gap between described upper sliding sleeve (10), low sleeve (26) and the interior cover (5) is 4mm.
6. according to claim 1ly exempt to bore two-stage cementing tool, it is characterized in that described top connection (1) is cylindric, its upper inside wall has casing threads (50), and the bottom outer wall is fixed on the top of cover (5) in described in the body (2) by external screw thread; Have casing threads (35) in the outer wall bottom of described body (2).
7. according to claim 1ly exempt to bore two-stage cementing tool, it is characterized in that described shut-off plug (102) comprises plug tail (39), shut-off plug sealing ring (40), glue bowl (44), retaining ring (46); Described plug tail (39) inwall is connected by the outer wall top of screw thread with cock body (45); Described shut-off plug sealing ring (40) is arranged on the outer wall of described plug tail (39); One group of threaded bosses is arranged on the outer wall of described cock body (45), and described glue bowl (44) is fixed on the outer wall of described cock body (45) threaded bosses; Be provided with retaining ring (46) in the bottom of described cock body (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920246521XU CN201568013U (en) | 2009-10-30 | 2009-10-30 | Two-stage cementer free from drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920246521XU CN201568013U (en) | 2009-10-30 | 2009-10-30 | Two-stage cementer free from drilling |
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| CN201568013U true CN201568013U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920246521XU Expired - Lifetime CN201568013U (en) | 2009-10-30 | 2009-10-30 | Two-stage cementer free from drilling |
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| CN103089227A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Large-drift-diameter drilling-free staged fracturing well completion sliding sleeve device |
| CN103415674A (en) * | 2011-02-10 | 2013-11-27 | 哈里伯顿能源服务公司 | System and method for servicing a wellbore |
| CN104653149A (en) * | 2014-12-31 | 2015-05-27 | 天津安东石油机械制造有限公司 | Oil-gas well gas-seal stage collar and assembly method thereof |
| CN105422042A (en) * | 2015-12-10 | 2016-03-23 | 中国石油天然气股份有限公司 | Drilling-free two-stage cementing device |
| WO2021097017A1 (en) * | 2019-11-12 | 2021-05-20 | Schlumberger Technology Corporation | Stage cementing collar with cup tool |
| CN114427373A (en) * | 2020-09-16 | 2022-05-03 | 中国石油化工股份有限公司 | Opening plug for stage cementing device and stage cementing device |
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2009
- 2009-10-30 CN CN200920246521XU patent/CN201568013U/en not_active Expired - Lifetime
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| CN105422042B (en) * | 2015-12-10 | 2018-07-13 | 中国石油天然气股份有限公司 | Drilling-free two-stage cementing device |
| US11530595B2 (en) | 2018-08-24 | 2022-12-20 | Schlumberger Technology Corporation | Systems and methods for horizontal well completions |
| WO2021097017A1 (en) * | 2019-11-12 | 2021-05-20 | Schlumberger Technology Corporation | Stage cementing collar with cup tool |
| GB2604783A (en) * | 2019-11-12 | 2022-09-14 | Schlumberger Technology Bv | Stage cementing collar with cup tool |
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| US12044098B2 (en) | 2019-11-12 | 2024-07-23 | Schlumberger Technology Corporation | Stage cementing collar with cup tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHELFOIL PETROLEUM EQUIPMENT & SERVICES CO., LTD. Assignor: Research Institute of petroleum exploration and development|China Petroleum Chemical Co, China Petroleum Chemical Co Contract record no.: 2012990000433 Denomination of utility model: Two-stage cementer free from drilling Granted publication date: 20100901 License type: Exclusive License Record date: 20120620 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |