CN202832376U - Full-bore closable stratified sliding sleeve - Google Patents
Full-bore closable stratified sliding sleeve Download PDFInfo
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- CN202832376U CN202832376U CN 201220387524 CN201220387524U CN202832376U CN 202832376 U CN202832376 U CN 202832376U CN 201220387524 CN201220387524 CN 201220387524 CN 201220387524 U CN201220387524 U CN 201220387524U CN 202832376 U CN202832376 U CN 202832376U
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Abstract
The utility model provides a full-bore closable stratified sliding sleeve. The front end of the sliding sleeve comprises an upper joint (1), a sliding sleeve (2), a bushing (3), a compression ring (7), an internal lock cylinder (4) and a connecting cylinder (8) from outside to inside; the rear end comprises a lower joint (12), a pawl cylinder (9), a ball seat (10) and an internal lock joint (11) from outside to inside; one end adjacent to the upper joint (1) is the front end of the sliding sleeve; and one end adjacent to the lower joint is the rear end of the sliding sleeve. The full-bore closable stratified sliding sleeve provided by the utility model can ensure a large bore and implements a downhole tool which can be opened and closed at a fixed point.
Description
Technical field
The utility model relates to petroleum gas production down-hole special tool, but is specifically related to a kind of full-bore closing type layering sliding sleeve.
Background technology
Because Geological Reasons, oil, gas often are stored in several discontinuous Reservoir Bodies, want to realize that a well exploits the oil gas in several Reservoir Bodies simultaneously, can realize by the horizontal well drilling technology, during the formation testing completion, because the geologic feature of the non-homogeneity of reservoir, every section transformation scale and operation pressure there are differences, want horizontal segment is realized fixed point transformation, must be lowered to the perforate downhole tool that to fix a point to open.The boring method that uses at present has two classes: a kind of is the ball-throwing type sliding sleeve, and the later stage ball can not be discharged, and causes logger to be lowered to, and also can't carry out the water detection operation after the water outlet; Another kind be exactly from top to bottom successively perforation transform, can log well and water detection, but want the water-yielding stratum in the middle of the shutoff certainly will sacrifice EXIT POINT production capacity once.In the urgent need to a kind of not only can timing switch, but also guarantee the instrument of large latus rectum.
The utility model content
But a kind of full-bore closing type layering sliding sleeve that the utility model provides, the front end of described sliding sleeve comprises top connection (1), sliding sleeve (2), lining (3), pressure ring (7), lock cylinder (4) and the connecting cylinder (8) that ecto-entad arranges, and the rear end comprises lower contact (12), ratchet cylinder (9), ball seat (10) and the interior latching connector (11) that ecto-entad arranges; A described end near top connection (1) is the front end of described sliding sleeve, and a described end near lower contact is the rear end of described sliding sleeve;
Described top connection (1) front end is provided with internal thread A, and the rear end is provided with external screw thread A, is provided with the retaining step in the rear end;
Described sliding sleeve (2) is positioned at the rear end near described top connection (1), the outside is fixedly connected with described top connection (1) inboard, inboard, described sliding sleeve (2) front end top is provided with the internal diameter section, front end is provided with internal thread B, described internal thread B bottom is provided with the two seals ring recess, the rear end is provided with outstanding step A, and described step A contacts with described ratchet cylinder (9);
Described lining (3) front end top is provided with the hole enlargement step that external diameter enlarges, and end face is provided with for special tool four symmetrical road grooves are installed, and is provided with external screw thread B in described hole enlargement step bottom, is 15 ° of outer inclines in the lower surface of lining;
Lock cylinder (4) front end inboard is provided with bright and clean section A, the rear end of described bright and clean section A is provided with pawl screw thread A, described pawl screw thread A is interior undergauge to the rearward end of described lock cylinder (4) later on, described pawl screw thread A bottom is provided with inner seal ring groove and internal thread C, and outside hypomere is provided with two-stage undergauge section; Described pressure ring (7) top is provided with large section of internal diameter, contacts with described lock cylinder (4) level, and described lock cylinder (4) is positioned at the end near described sliding sleeve front end, and described pressure ring (7) is positioned at the end near described sliding sleeve rear end;
Described connecting cylinder (8) is positioned between described ratchet cylinder (9) and the ball seat (10), the front end outside is provided with bright and clean section B, described bright and clean section B rear end is provided with external screw thread C, external screw thread C rear end is bright and clean section C, described bright and clean section C rear end is provided with extension diameter section, is provided with the undergauge step of the ratchet that described ratchet cylinder (9) is installed at the front end of described extension diameter section, is provided with a groove in the rear end of described extension diameter section, groove is 3 ° of hole enlargements to the lower end, be provided with the external seal groove in the rear end; The rear inside of described connecting cylinder (8) is extension diameter section, described connecting cylinder (8) rearward end corresponding with described external seal ring recess near be provided with outstanding step, be provided with twice inner seal ring groove at position, described extension diameter section top;
Described ratchet cylinder (9) rear end is provided with internal thread D, and front end is provided with described ratchet;
The external diameter of described ball seat (10) and internal diameter are front fine and rear thick, are provided with circumferentially equally distributed 4 through holes in the bottom of small outer diameter section, and the rear portion enlarged diameter section is respectively equipped with internal thread E and external screw thread E;
Described interior latching connector (11) the front end outside is provided with pawl screw thread B, and the rear end of described pawl screw thread B is provided with bright and clean section D, and the rear portion of described bright and clean section D is provided with step B, and described step B rear portion is provided with pawl screw thread C;
The outside, rear end of described lower contact (12) is provided with external screw thread F, and front end is provided with internal thread F, and the rear end of internal thread F is provided with undergauge.
In the first optimal technical scheme that the utility model provides: described retaining step is 45° angle, be circumferentially with the fluid passage of equally distributed 12 strips in described retaining step bottom, be circumferentially with equally distributed 8 pin holes in bottom, described fluid passage.
In the second optimal technical scheme that the utility model provides: the outside of described sliding sleeve (2) is provided with the two seals ring recess on the top near internal thread B, circumferentially evenly be distributed with 8 counterbores at the middle part, be provided with the two seals ring recess in the bottom of counterbore, be provided with one the lock ring groove in the seal groove bottom.
In the 3rd optimal technical scheme that the utility model provides: described ratchet cylinder (9) front end is 4 ° and inwardly shrinks, and circumferentially evenly is cut to 8; Described ball seat (10) external diameter excessively section changes for 45° angle, and front end face is provided with 45 ° leaning angle; The described pawl screw thread C of described interior latching connector (11) vertically even cutting is ten parts, and inboard front inner diameter is little, and back end inside diameter is large.
In the 4th optimal technical scheme that the utility model provides: described layering sliding sleeve also comprises " O " I RunddichtringO 13, " O " II RunddichtringO 14, " V " I type circle 15, " O " III RunddichtringO 16, " O " IV RunddichtringO 17, " O " V-shaped seal ring 18, resin balls 19, " V " II type circle 20, " O " VI RunddichtringO 21 and " O " VII RunddichtringO 22.
In the 5th optimal technical scheme that the utility model provides: described layering sliding sleeve comprises and cuts off (5), described cutting off (5) upper end be provided with for allen wrench counterbore, the outside is provided with screw thread, the lower end is bright and clean cylinder;
Described top connection (1) is fixing by described cutting off (5) with described sliding sleeve (2), seals by sealing ring.
In the 6th optimal technical scheme that the utility model provides: described lock cylinder (4) and interior latching connector (11) adopt the pressure cap fixed form that described " O " RunddichtringO and " V " RunddichtringO are installed, and make described sealing ring reliable when lower brill and flushing.
In the 7th optimal technical scheme that the utility model provides: described lining (3) and sliding sleeve (2) are threaded connection, form extension diameter section between the internal lobes of the rear end of described sliding sleeve (2) and the described lining (3), for implementing again to close the permanent position that described sliding sleeve (2) provides special tool.
In the 8th optimal technical scheme that the utility model provides: the external screw thread of the internal thread of described lock cylinder (4) and described interior latching connector (11) is complementary, and interior latching connector (11) external thread section is designed to notching construction, guarantees to achieve a butt joint.
In the 9th optimal technical scheme that the utility model provides: described layering sliding sleeve comprises C type split ring lock ring (6).
A kind of beneficial effect that the utility model provides comprises:
But 1, a kind of full-bore closing type layering sliding sleeve of providing of the utility model provides the sealing ring of various structures, make connect after sealing more reliable, sealing ring is installed and all adopted the pressure cap fixed form, and is more reliable when lower brill and flushing.
But 2, a kind of full-bore closing type layering sliding sleeve of providing of the utility model, the design of the lock slots structure of the hole enlargement of connecting cylinder 8 bottoms and two place's ratchets, guaranteed that fluid can around the bottom to ball seat, be implemented effectively flushing to next sliding sleeve top when the state of salvaging.
3, the connected mode of connecting cylinder, pressure ring 7, lock cylinder 4 has guaranteed the easy for installation of ratchet, has also guaranteed the sealing with lining simultaneously.
4, lining 3 and sliding sleeve 2 are threaded connection, and ready-made extension diameter section between the internal lobes of sliding sleeve lower end and the lining is for implementing again to close the permanent position that sliding sleeve 2 provides special tool.
5, lock cylinder 4 internal threads and interior latching connector 11 external screw threads are complementary, and the notching construction of interior latching connector 11 external thread sections design guarantees can achieve a butt joint under constant weight.
Description of drawings
But a kind of full-bore closing type layering sliding sleeve sectional view that Fig. 1 provides for the utility model;
Partial structurtes one schematic diagram after but a kind of full-bore closing type layering sliding sleeve that Fig. 2 provides for the utility model is salvaged;
The structural representation of the ball seat after but a kind of full-bore closing type layering sliding sleeve that Fig. 3 provides for the utility model is salvaged
But the internal lock joint design schematic diagram of a kind of full-bore closing type layering sliding sleeve that Fig. 4 provides for the utility model;
Partial structurtes two schematic diagrames after but a kind of full-bore closing type layering sliding sleeve that Fig. 5 provides for the utility model is salvaged.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
But a kind of full-bore closing type layering sliding sleeve sectional view that provides for the utility model such as Fig. 1, as shown in Figure 1, the front end of sliding sleeve comprises top connection 1, sliding sleeve 2, lining 3, pressure ring 7, lock cylinder 4 and the connecting cylinder 8 that ecto-entad arranges, and the rear end comprises lower contact 12, ratchet cylinder 9, ball seat 10 and the interior latching connector 11 that ecto-entad arranges; End near top connection 1 is the front end of sliding sleeve, and an end of close lower contact is the rear end of sliding sleeve;
Top connection 1 front end is provided with internal thread A, the rear end is provided with external screw thread A, and the rear end is provided with the retaining step, and the retaining step is 45° angle, be circumferentially with the fluid passage of equally distributed 12 strips in described retaining step bottom, be circumferentially with equally distributed 8 pin holes in bottom, described fluid passage.
Sliding sleeve 2 is positioned at the rear end near top connection 1, the outside is fixedly connected with top connection 1 inboard, inboard, sliding sleeve 2 front end top is provided with the internal diameter section, front end is provided with internal thread B, internal thread B bottom is provided with the two seals ring recess, the rear end is provided with outstanding step A, step A contacts with ratchet cylinder 9, the outside of sliding sleeve 2 is provided with the two seals ring recess on the top near internal thread B, circumferentially evenly be distributed with 8 counterbores at the middle part, be provided with the two seals ring recess in the bottom of counterbore, be provided with one the lock ring groove in the seal groove bottom.
Lining 3 front end tops are provided with the hole enlargement step that external diameter enlarges, and end face is provided with for special tool four symmetrical road grooves are installed, and is provided with external screw thread B in hole enlargement step bottom, is 15 ° of outer inclines in the lower surface of lining.
Lock cylinder 4 front end inboards are provided with bright and clean section A, and the rear end of bright and clean section A is provided with pawl screw thread A, and pawl screw thread A is interior undergauge to the rearward end of lock cylinder 4 later on, and pawl screw thread A bottom is provided with inner seal ring groove and internal thread C, and outside hypomere is provided with two-stage undergauge section; Pressure ring 7 tops are provided with large section of internal diameter, contact with lock cylinder 4 levels, and lock cylinder 4 is positioned at the end near the sliding sleeve front end, and pressure ring 7 is positioned at the end near the sliding sleeve rear end.
Connecting cylinder 8 is between ratchet cylinder 9 and ball seat 10, the front end outside is provided with bright and clean section B, bright and clean section B rear end is provided with external screw thread C, external screw thread C rear end is bright and clean section C, bright and clean section C rear end is provided with extension diameter section, is provided with the undergauge step of the ratchet that ratchet cylinder 9 is installed at the front end of extension diameter section, is provided with a groove in the rear end of extension diameter section, groove is 3 ° of hole enlargements to the lower end, be provided with the external seal groove in the rear end; The rear inside of connecting cylinder 8 is extension diameter section, connecting cylinder 8 rearward end corresponding with the external seal ring recess near be provided with outstanding step, be provided with twice inner seal ring groove at position, extension diameter section top.
The external diameter of ball seat 10 and internal diameter are front fine and rear thick, are provided with circumferentially equally distributed 4 through holes in the bottom of small outer diameter section, and the rear portion enlarged diameter section is respectively equipped with internal thread E and external screw thread E.
The interior latching connector 11 front ends outside is provided with pawl screw thread B, and the rear end of pawl screw thread B is provided with bright and clean section D, and the rear portion of bright and clean section D is provided with step B, and step B rear portion is provided with pawl screw thread C.
The outside, rear end of lower contact 12 is provided with external screw thread F, and front end is provided with internal thread F, and the rear end of internal thread F is provided with undergauge.
A kind of layering sliding sleeve that the utility model provides comprise cut off 5, C type split ring lock ring 6, " O " I RunddichtringO 13, " O " II RunddichtringO 14, " V " I type circle 15, " O " III RunddichtringO 16, " O " IV RunddichtringO 17, " O " V-shaped seal ring 18, resin balls 19, " V " II type circle 20, " O " VI RunddichtringO 21 and " O " VII RunddichtringO 22.
Cut off 5 upper ends be provided with for allen wrench counterbore, the outside is provided with screw thread, the lower end is bright and clean cylinder.
Top connection 1 and sliding sleeve 2 cut off 5 fixingly by described, seal by sealing ring.
The external screw thread of the internal thread of lock cylinder 4 and interior latching connector 11 is complementary, and the external thread section of interior latching connector 11 is designed to notching construction, guarantees to achieve a butt joint.
A kind of layering sliding sleeve that the utility model offers adopts in the oil pipe pitching to suppress, the thrust that ball seat is downward, this thrust is through ball seat and connecting cylinder, connecting cylinder and lock cylinder are threaded and make lock cylinder also receive downward power simultaneously, the downward thrust of ball seat passes to the ratchet cylinder through being threaded, the outstanding step of the outer lug of ratchet and sliding sleeve lower end is hung, ball seat drives sliding sleeve and moves downward, suppress the design load of shear pin, shear pin is cut off under the promotion that slides over pressure and is moved down fast, when split ring moves to limited step, the split ring hole enlargement realizes the sliding sleeve self-locking, and implementation tool is inside and outside links up, and transforms liquid and enters the transformation stratum through circulation port; After transforming end, fishing joint 23 is connected to oil pipe or the coiled tubing lower end of little external diameter, the turn on pump flushing is inserted into gradually and presses down 0.5 ton in the lock cylinder, fishing joint is inserted in the lock cylinder pawl screw thread, on submit into tubing string, be threaded with connecting cylinder 8 through lock cylinder 4, make lock cylinder, pressure ring and connecting cylinder move upward, when the concave slot sports of connecting cylinder 8 during to the internal lobes of ratchet, ratchet shrinks and hangs in the groove, the external diameter of the outer lug of ratchet this moment is less than the external diameter of ratchet cylinder, just can in sliding sleeve, freely pass through, repeat above-mentioned action if need salvaging next stage ball seat directly to transfer, until be connected to all ball seats, on mention tubing string, realize noresidue ball seat and ball in the well, the purpose of stimulating the menstrual flow greatly; If discovery well water, after water spot is determined in well logging, use little oil pipe or coiled tubing, special tool is carried to water outlet sliding sleeve lower end in the lower end, suppress the startup closing tool, carry to the lower end of lining, sliding sleeve moves upward to the retaining step of top connection, trip out instrument, finish and close the EXIT POINT operation.
Ball seat becomes pressure-bearing surface after falling ball seat, suppress in the tubing string, pressure is converted to downward thrust by pressure-bearing surface, the thrust that ball seat bears is passed to the ratchet cylinder by connecting thread inside and outside the ball seat, and the outer lug by ratchet is passed to the sliding sleeve inboard step of speaking out to power, sliding sleeve is moved downward cut off shear pin, slip cap moves downward, slip cap stop motion when split ring arrives limited step, the circulation port of top connection is opened, the inside and outside purpose of linking up of implementation tool.
Detailed process: ratchet 9 is inserted in the sliding sleeve 2; "O"-ring IV is installed in the seal groove of connecting cylinder 8 inboards; Pressure ring 7 is inserted in from connecting cylinder 8 upper ends; " O " VII sealing ring 22 is installed in the seal groove of lock cylinder 4,20 1 groups on " V " II type circle 20, " O " VI RunddichtringO 21, " V " II type circle is installed on bright and clean section of lock cylinder 4 outsides, the screw thread of lock cylinder 4 with connecting cylinder 8 is connected, the press seal circle, the inboard lug of ratchet this moment just in time is suspended on the undergauge step of connecting cylinder 8, and 4 ° of contractions of ratchet inclination angle is extruded stretches; Lining 3 is inserted in lock cylinder 4; " O " II sealing ring 14 is installed in the two seals ring recess of sliding sleeve 2 inboards; Insert in the sliding sleeve 2 lining 3 and thread up; C lock ring 6 is installed on the sliding sleeve 2, " O " I sealing ring is respectively installed in the four road seal grooves in sliding sleeve 2 outsides, cleans top connection 1 inwall, sliding sleeve 2 is installed in the top connection, make the counterbore of the pin hole of top connection and sliding sleeve corresponding, shear pin 5 is installed in the pin hole tightens; " O " V sealing ring 18 is installed in the two seals groove of connecting cylinder 8, inserts in the ratchet cylinder 9 ball seat 10 and thread up; " V " I type circle 15, " O " III RunddichtringO 16, " V " I type circle 15 are installed in order on bright and clean section of interior latching connector 11, the screw thread that interior latching connector is connected with ball seat tightens.Top connection 1 and being threaded of lower contact 12 are tightened.Carry out pressure testing by design value.
Under the separate zone stimulation sliding sleeve between two packers, after packer is finished and is set, throw the ball with the corresponding diameter of sliding sleeve, wait for that first ball finishes free-falling in the straight well section, the turn on pump release is to ball seat, ball seat 10 blocked ready-made pressure-bearing surfaces, continue to suppress ball seat 10 and be subject to downward thrust, this thrust passes to connecting cylinder through the ready-made one of connecting thread of ball seat 10 and connecting cylinder 8, and the connecting thread through connecting cylinder 8 passes to lock cylinder 4 again, makes lock cylinder 4 also receive downward power simultaneously; Same ball seat 10 downward thrusts make connecting cylinder 8 and ratchet cylinder 9 ready-made one through screw thread, the outer lug of the ratchet of ratchet cylinder 9 is that the end face suspension contacts with the outstanding step of sliding sleeve 2 lower ends, the downward power of ball seat also drives sliding sleeve 2 simultaneously and moves downward, suppress the design load (this value can be adjusted as required) of shear pin, shear pin is cut off, continue to suppress, slip cap moves down under the promotion of pressure fast, when split ring moves to limited step, the split ring hole enlargement, the slip cap motion is obstructed, at this moment, implementation tool is inside and outside links up, and transforms liquid and enters the transformation stratum through circulation port.After transforming end, fishing joint 23 is connected to oil pipe or the coiled tubing lower end of little external diameter, lower to going up most 1.0-1.5 rice on the sliding sleeve, the turn on pump flushing is inserted into gradually and presses down 0.5 ton in the lock cylinder, fishing joint is inserted in the lock cylinder pawl screw thread, this moment, pump pressure can obviously rise, on submit into tubing string, be threaded with connecting cylinder 8 through 4 lock cylinder, make lock cylinder, pressure ring and connecting cylinder move upward, when the concave slot sports of connecting cylinder 8 during to the internal lobes of ratchet, ratchet shrinks and hangs in the groove, the external diameter of the outer lug of ratchet this moment is less than the external diameter of ratchet cylinder, the end face of ball seat runs to the extension diameter section of connecting cylinder, fluid enters four circulation ports and gets back to tubing string inside through the gap of extension diameter section, realization is to the flushing of bottom, just can in sliding sleeve, freely pass through, repeat above-mentioned action if need salvaging next stage ball seat directly to transfer, until be connected to all ball seats, on mention tubing string, realize noresidue ball seat and ball in the well, the purpose of large latus rectum, if discovery well water, after water spot is determined in well logging, use little oil pipe or coiled tubing, special tool is carried to water outlet sliding sleeve lower end in the lower end, suppress the startup closing tool, carry to the lower end of lining, sliding sleeve moves upward to the retaining step of top connection, and pulling force can increase, discharge the tubing string internal pressure, special tool shrinks, and trips out instrument, finishes and closes the EXIT POINT operation.
Although more than with reference to the accompanying drawings embodiment of the present utility model is had been described in detail; but be not limited only to this specific embodiment; those skilled in the art is according to this concrete technical scheme variously being equal to of carrying out, deformation process, also within protection domain of the present utility model.
Claims (10)
1. but a full-bore closing type layering sliding sleeve is characterized in that,
The front end of described sliding sleeve comprises top connection (1), sliding sleeve (2), lining (3), pressure ring (7), lock cylinder (4) and the connecting cylinder (8) that ecto-entad arranges, and the rear end comprises lower contact (12), ratchet cylinder (9), ball seat (10) and the interior latching connector (11) that ecto-entad arranges; A described end near top connection (1) is the front end of described sliding sleeve, and a described end near lower contact is the rear end of described sliding sleeve;
Described top connection (1) front end is provided with internal thread A, and the rear end is provided with external screw thread A, is provided with the retaining step in the rear end;
Described sliding sleeve (2) is positioned at the rear end near described top connection (1), the outside is fixedly connected with described top connection (1) inboard, inboard, described sliding sleeve (2) front end top is provided with the internal diameter section, front end is provided with internal thread B, described internal thread B bottom is provided with the two seals ring recess, the rear end is provided with outstanding step A, and described step A contacts with described ratchet cylinder (9);
Described lining (3) front end top is provided with the hole enlargement step that external diameter enlarges, and end face is provided with for special tool four symmetrical road grooves are installed, and is provided with external screw thread B in described hole enlargement step bottom, is 15 ° of outer inclines in the lower surface of lining;
Lock cylinder (4) front end inboard is provided with bright and clean section A, the rear end of described bright and clean section A is provided with pawl screw thread A, described pawl screw thread A is interior undergauge to the rearward end of described lock cylinder (4) later on, described pawl screw thread A bottom is provided with inner seal ring groove and internal thread C, and outside hypomere is provided with two-stage undergauge section; Described pressure ring (7) top is provided with large section of internal diameter, contacts with described lock cylinder (4) level, and described lock cylinder (4) is positioned at the end near described sliding sleeve front end, and described pressure ring (7) is positioned at the end near described sliding sleeve rear end;
Described connecting cylinder (8) is positioned between described ratchet cylinder (9) and the ball seat (10), the front end outside is provided with bright and clean section B, described bright and clean section B rear end is provided with external screw thread C, external screw thread C rear end is bright and clean section C, described bright and clean section C rear end is provided with extension diameter section, is provided with the undergauge step of the ratchet that described ratchet cylinder (9) is installed at the front end of described extension diameter section, is provided with a groove in the rear end of described extension diameter section, groove is 3 ° of hole enlargements to the lower end, be provided with the external seal groove in the rear end; The rear inside of described connecting cylinder (8) is extension diameter section, described connecting cylinder (8) rearward end corresponding with described external seal ring recess near be provided with outstanding step, be provided with twice inner seal ring groove at position, described extension diameter section top;
Described ratchet cylinder (9) rear end is provided with internal thread D, and front end is provided with described ratchet;
The external diameter of described ball seat (10) and internal diameter are front fine and rear thick, are provided with circumferentially equally distributed 4 through holes in the bottom of small outer diameter section, and the rear portion enlarged diameter section is respectively equipped with internal thread E and external screw thread E;
Described interior latching connector (11) the front end outside is provided with pawl screw thread B, and the rear end of described pawl screw thread B is provided with bright and clean section D, and the rear portion of described bright and clean section D is provided with step B, and described step B rear portion is provided with pawl screw thread C;
The outside, rear end of described lower contact (12) is provided with external screw thread F, and front end is provided with internal thread F, and the rear end of internal thread F is provided with undergauge.
2. a kind of layering sliding sleeve as claimed in claim 1, it is characterized in that, described retaining step is 45° angle, is circumferentially with the fluid passage of equally distributed 12 strips in described retaining step bottom, is circumferentially with equally distributed 8 pin holes in bottom, described fluid passage.
3. a kind of layering sliding sleeve as claimed in claim 1, it is characterized in that, the outside of described sliding sleeve (2) is provided with the two seals ring recess on the top near internal thread B, circumferentially evenly be distributed with 8 counterbores at the middle part, be provided with the two seals ring recess in the bottom of counterbore, be provided with one the lock ring groove in the seal groove bottom.
4. a kind of layering sliding sleeve as claimed in claim 1 is characterized in that, described ratchet cylinder (9) front end is 4 ° and inwardly shrinks, and circumferentially evenly is cut to 8; Described ball seat (10) external diameter excessively section changes for 45° angle, and front end face is provided with 45 ° leaning angle; The described pawl screw thread C of described interior latching connector (11) vertically even cutting is ten parts, and inboard front inner diameter is little, and back end inside diameter is large.
5. a kind of layering sliding sleeve as claimed in claim 1, it is characterized in that described layering sliding sleeve also comprises " O " I RunddichtringO (13), " O " II RunddichtringO (14), " V " I type circle (15), " O " III RunddichtringO (16), " O " IV RunddichtringO (17), " O " V-shaped seal ring (18), resin balls (19), " V " II type circle (20), " O " VI RunddichtringO (21) and " O " VII RunddichtringO (22).
6. a kind of layering sliding sleeve as claimed in claim 5 is characterized in that, described layering sliding sleeve comprises and cut off (5), described cutting off (5) upper end be provided with for allen wrench counterbore, the outside is provided with screw thread, the lower end is bright and clean cylinder;
Described top connection (1) is fixing by described cutting off (5) with described sliding sleeve (2), seals by sealing ring.
7. a kind of layering sliding sleeve as claimed in claim 5, it is characterized in that, described lock cylinder (4) and interior latching connector (11) adopt the pressure cap fixed form that described " O " RunddichtringO and " V " RunddichtringO are installed, and make described sealing ring reliable when lower brill and flushing.
8. a kind of layering sliding sleeve as claimed in claim 1, it is characterized in that, described lining (3) and sliding sleeve (2) are threaded connection, form extension diameter section between the internal lobes of the rear end of described sliding sleeve (2) and the described lining (3), for implementing again to close the permanent position that described sliding sleeve (2) provides special tool.
9. a kind of layering sliding sleeve as claimed in claim 1, it is characterized in that, the external screw thread of the internal thread of described lock cylinder (4) and described interior latching connector (11) is complementary, and interior latching connector (11) external thread section is designed to notching construction, guarantees to achieve a butt joint.
10. a kind of layering sliding sleeve as claimed in claim 1 is characterized in that, described layering sliding sleeve comprises C type split ring lock ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387524 CN202832376U (en) | 2012-08-07 | 2012-08-07 | Full-bore closable stratified sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387524 CN202832376U (en) | 2012-08-07 | 2012-08-07 | Full-bore closable stratified sliding sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN202832376U true CN202832376U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220387524 Expired - Lifetime CN202832376U (en) | 2012-08-07 | 2012-08-07 | Full-bore closable stratified sliding sleeve |
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Cited By (8)
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|---|---|---|---|---|
| CN103321608A (en) * | 2013-07-09 | 2013-09-25 | 中国石油集团渤海钻探工程有限公司 | Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out |
| CN103590800A (en) * | 2013-11-28 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Multi-level pitch fracturing sliding sleeve capable of fishing ball seats |
| CN104653162A (en) * | 2015-03-02 | 2015-05-27 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Core-taking ball fracturing sliding sleeve |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| CN104727796A (en) * | 2015-03-02 | 2015-06-24 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string |
| CN105464640A (en) * | 2014-09-09 | 2016-04-06 | 山东兆鑫石油工具有限公司 | Sand blower used for multi-layer fracturing |
| CN105672944A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Sliding sleeve opening device |
| CN105672945A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Sliding sleeve opening device |
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2012
- 2012-08-07 CN CN 201220387524 patent/CN202832376U/en not_active Expired - Lifetime
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| CN103321608A (en) * | 2013-07-09 | 2013-09-25 | 中国石油集团渤海钻探工程有限公司 | Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out |
| CN103590800B (en) * | 2013-11-28 | 2016-03-16 | 中国石油集团川庆钻探工程有限公司 | The multistage pitching fracturing sliding bush of ball seat can be salvaged |
| CN103590800A (en) * | 2013-11-28 | 2014-02-19 | 中国石油集团川庆钻探工程有限公司 | Multi-level pitch fracturing sliding sleeve capable of fishing ball seats |
| CN105464640B (en) * | 2014-09-09 | 2017-12-05 | 山东兆鑫石油工具有限公司 | Sanding machine available for multiple fracturing |
| CN105464640A (en) * | 2014-09-09 | 2016-04-06 | 山东兆鑫石油工具有限公司 | Sand blower used for multi-layer fracturing |
| CN104695929A (en) * | 2015-03-02 | 2015-06-10 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well |
| CN104727796A (en) * | 2015-03-02 | 2015-06-24 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Construction method of horizontal well core-withdrawable sliding sleeve multistage fracturing completion pipe string |
| CN104727796B (en) * | 2015-03-02 | 2017-08-29 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | A kind of horizontal well can coring sliding sleeve multistage fracturing completion tubular column construction method |
| CN104653162B (en) * | 2015-03-02 | 2017-08-29 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | One kind can coring pitching fracturing sliding bush |
| CN104653162A (en) * | 2015-03-02 | 2015-05-27 | 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 | Core-taking ball fracturing sliding sleeve |
| CN105672944A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Sliding sleeve opening device |
| CN105672945A (en) * | 2016-01-20 | 2016-06-15 | 中国石油化工股份有限公司 | Sliding sleeve opening device |
| CN105672945B (en) * | 2016-01-20 | 2018-11-06 | 中国石油化工股份有限公司 | A kind of sliding sleeve opening device |
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