CN201695973U - Hydraulic tail pipe releaser for oil gas well - Google Patents
Hydraulic tail pipe releaser for oil gas well Download PDFInfo
- Publication number
- CN201695973U CN201695973U CN2010202200599U CN201020220059U CN201695973U CN 201695973 U CN201695973 U CN 201695973U CN 2010202200599 U CN2010202200599 U CN 2010202200599U CN 201020220059 U CN201020220059 U CN 201020220059U CN 201695973 U CN201695973 U CN 201695973U
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- lock
- tube
- insertion tube
- hanging
- tail pipe
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Abstract
The utility model discloses a hydraulic tail pipe releaser for an oil gas well. One end of a shell of the utility model is in duplex short-circuit sealing connection with a hanger, while the other end of the shell thereof is in short-circuit sealing connection with a tail pipe. One end of the inserted pipe is in short-circuit sealing connection with a drill stem, while the other end thereof is connected with a locking hanging mechanism arranged in the shell. The inserted pipe is provided with a pressure transmission hole communicated with a hydraulic cylinder. The hydraulic tail pipe releaser for the oil gas well firstly enters the inside of the well by adopting reset locking and hanging connection control of a tail pipe pillar and a drill stem pillar and locking control of the pressure transmission hole, then makes an unlocking mechanism unlock by hydraulic pressure to carry out hanging operation and relieves the reset locking and hanging mode to release the tail pipe. The utility model provides the hydraulic tail pipe releaser suitable for tail pipe hanging cementing construction of a deep well, an ultra deep well, an inclined well and a horizontal well, has the advantages of simple and convenient operation, safety and reliability and increases using effect of the tail pipe hanger.
Description
Technical field
The utility model relates to a kind of oil gas well hydraulic liner releaser, is used for the release control of oil gas well cementing operation tail pipe, belongs to oil gas well hydraulic liner releaser Design of device manufacturing technology field.
Background technology
In the prior art, oil gas well depth well, ultradeep well, inclined shaft, horizontal well employing are hung the well cementation mode with interior stub liner for 500 meters and are got more and more.For example, China Patent No. " 200620138318.7 " discloses a kind of single ball formula hydraulic pressure and has thrown off extension hanger, and its applying date is on September 22nd, 2006, and notice of authorization day is on November 28th, 2007.Have inlet opening between the central tube of this hanger and the body, the passage of formation activity plug between urceolus and the body, the passage of inlet opening and movable plug links, and setting mechanism is connected with hold-down screw by sliding screw with central tube, and cycling mechanism is connected with setting mechanism by hold-down screw.
Existing tail tube hanging well cementation mainly has the following disadvantages: because hanger fluid cylinder inlet opening and inner loop passage UNICOM, easily generation slurry foreign material obstruction fluid cylinder or circulating pressure are worked fluid cylinder in advance and are caused hanging inefficacy, because the tail pipe post is short, in light weight, the operation easier that the rotation that is threaded commonly used discharges tail pipe is big, the sticking situation generation that blocks and be linked with tail pipe is often arranged, the well rotating disk rotation back-off that has reaches hundreds of circle tail pipe and also is difficult to discharge disengaging, and the safe release of tail pipe has become a great problem in deviated directional drilling, horizontal well and highly difficult complicated well especially.On-the-spot serious hope has multinomial functions, easy and simple to handle, safe and reliable liner releasers such as control suspension inefficacy and hydraulic pressure release and occurs.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of oil gas well hydraulic liner releaser is provided, the utility model takes the tail pipe post to be connected control with the lock hanging that resets of drill string earlier and the fluid cylinder pressure transmission hole blocks the control G.I.H, removing the fluid cylinder pressure transmission hole with hydraulic pressure then blocks control and hangs operation and make the lock hanging that the resets mode that breaks away from that resets discharge tail pipe with the control that is connected that hydraulic pressure is removed the lock hanging that resets, suitable deep-well, ultradeep well, inclined shaft, the hydraulic liner releaser of horizontal well tail tube hanging cementing operation, easy and simple to handle, safe and reliable, strengthened the result of use of extension hanger.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of oil gas well hydraulic liner releaser comprises housing, insertion tube, lock hanging body and release mechanism, it is characterized in that: the two public short circuits of described housing one end and hanger are tightly connected, and the other end and tail pipe short circuit are tightly connected; Described insertion tube one end and drilling rod short circuit are tightly connected, and the other end lock hanging body interior with being arranged on housing is connected, and has the pressure transmission hole that leads to fluid cylinder on the insertion tube; Described lock hanging body comprises lock tube, the lock hanging that resets, supporting base, lock nut and lock tube, lock tube one end sealing is arranged on that the other end is positioned on the supporting base between insertion tube and the hanger pair public short circuits, reset lock hanging upper end is connected the lower end with insertion tube and cooperates locking with lock tube, lock nut is locked in the insertion tube of the lock hanging top that resets, lock tube upper end is connected with lock nut, the lower end cooperates locking with the lock hanging that resets, and has afterburning hole on the lock tube; Described release mechanism comprises separates lock ball, ball seat and sliding sleeve, separates lock ball and is positioned on the ball seat, and ball seat is locked in the sliding sleeve, and the sliding sleeve that drives lock nut and the motion of lock tube is locked in the insertion tube of lock nut top and seals pressure transmission hole.
The described lock hanging that the resets shape that distributes ringwise, the upper end is connected with the insertion tube inner thread, and connection of thread is between insertion tube and lock tube, and the lower end be and a lock keyed end that cooperates.
The described lock hanging end that resets is the coupling type step of the annular spread elastic webbing conical surface, and the lock tube end is the cone step that cooperates with the coupling type step.
Described lock tube end is provided with the annular boss that cooperates with the lock hanging inwall that resets, and the face that annular boss cooperates with the lock hanging inwall that resets is the inclined-plane.
Described lock tube upper end is connected with the lock nut inner thread, and the annular boss of lower end is provided with afterburning hole.
Described supporting base is positioned at the housing of tail pipe short circuit upper end, and the link of supporting base and tail pipe short circuit is connected with earial drainage self-locking plug through lock pin.
The link of described insertion tube and drilling rod short circuit forms hermetically-sealed construction by the hanger sealing shroud, and the hanger sealing shroud is between insertion tube and hanger central tube.
Between the two public short circuits of described housing and hanger, between housing and the tail pipe short circuit, between housing and the supporting base, between lock tube and the hanger pair public short circuits, between lock tube and the insertion tube, between insertion tube and the drilling rod short circuit, between insertion tube and the hanger sealing shroud, between insertion tube and the sliding sleeve, between insertion tube and the lock nut, be respectively arranged with joint ring between sliding sleeve and the ball seat.
Between described insertion tube and the sliding sleeve, between insertion tube and the lock nut, between sliding sleeve and the ball seat, be respectively arranged with lock pin between supporting base and the earial drainage self-locking plug.
Described housing one end is threaded with the two public short circuits of hanger, and the other end is threaded with the tail pipe short circuit.
Adopt advantage of the present utility model to be:
One, the lock hanging body and the release mechanism of the utility model setting are easy and simple to handle, safe and reliable, solved the technical barrier of deep-well, ultradeep well, inclined shaft, horizontal well tail tube hanging cementing operation suspension inefficacy and rotation release tail pipe simultaneously, having avoided is threaded sends into the sticking easily situation that is linked with the back-off difficulty of blocking of tail pipe, strengthened the result of use of extension hanger, can prevent accident, reduce cost, ensure the quality of products.
Two, in the utility model, the lock hanging that the resets shape that distributes ringwise, the upper end is connected with insertion tube inwall left hand thread, connection of thread is between insertion tube and lock tube, the lower end is the keyed end that cooperates with the lock tube, adopt this structure can guarantee that locking is reliable, make the lock hanging that resets after the hydraulic pressure release, be easy to reset again, when hydraulic pressure release generation is unusual, also can adopt rotation mode to remedy.
Three, in the utility model, the lock hanging end that resets is the coupling type step of the annular spread elastic webbing conical surface, and the lock tube end is the cone step that cooperates with the coupling type step, adopts the coupling type step of the annular spread elastic webbing conical surface to be easy to expansion locking and retracted for clearance.
Four, in the utility model, lock tube end is provided with the annular boss that cooperates with the lock hanging inwall that resets, and the face that annular boss cooperates with the lock hanging inwall that resets is the inclined-plane, adopts the annular boss on inclined-plane, carries out the locking and unlocking when being convenient to the motion of lock tube.
Five, in the utility model, lock tube upper end is connected with the lock nut inner thread, and the annular boss of lower end is provided with afterburning hole, and being threaded of lock tube is convenient to install and sealing, and the afterburning hole that is provided with on the annular boss increases the reliability of locking.
Six, in the utility model, supporting base is positioned at the housing of tail pipe short circuit upper end, and the link of supporting base and tail pipe short circuit is connected with earial drainage self-locking plug through lock pin, has promptly supported lock tube, is convenient to the cementing that circulates again.
Seven, in the utility model, the link of insertion tube and drilling rod short circuit forms hermetically-sealed construction by the hanger sealing shroud, the hanger sealing shroud is between insertion tube and hanger central tube, guaranteed the sealing effectiveness between insertion tube top and the hanger, so that hydraulic suspension and hydraulic pressure discharge the enforcement of tail pipe.
Eight, in the utility model, between the two public short circuits of housing and hanger, between housing and the tail pipe short circuit, between housing and the supporting base, between lock tube and the two public short circuits of hanger, between lock tube and the insertion tube, between insertion tube and the drilling rod short circuit, between insertion tube and the hanger sealing shroud, between insertion tube and the sliding sleeve, between insertion tube and the lock nut, be respectively arranged with joint ring between sliding sleeve and the ball seat, the sealing effectiveness by joint ring assurance hydraulic system be convenient to installation.
Nine, in the utility model, between insertion tube and the sliding sleeve, between insertion tube and the lock nut, between sliding sleeve and the ball seat, be respectively arranged with lock pin between supporting base and the earial drainage self-locking plug, the mode by lock pin connects, and is convenient to relative motion and realizes release.
Ten, in the utility model, housing one end is threaded with the two public short circuits of hanger, and the other end is threaded with the tail pipe short circuit, is convenient to textural association and forms control system.
Description of drawings
Lock hanging connects control to Fig. 1 and the fluid cylinder pressure transmission hole blocks the state of a control structural representation for the utility model resets
The specific embodiment
Embodiment 1
A kind of oil gas well hydraulic liner releaser comprises housing 18, insertion tube 1, lock hanging body and release mechanism, and the two public short circuits 6 of housing 18 1 ends and hanger are tightly connected, and the other end and tail pipe short circuit 19 are tightly connected; Described insertion tube 1 one ends and drilling rod short circuit 30 are tightly connected, and the other end is connected with lock hanging body in being arranged on housing 18, has the pressure transmission hole 3 that leads to fluid cylinder on the insertion tube 1; Described lock hanging body comprises lock tube 11, the lock hanging 12 that resets, supporting base 13, lock nut 24 and lock tube 26, lock tube 11 1 ends sealings is arranged on that the other end is positioned on the supporting base 13 between insertion tube 1 and the hanger pair public short circuits 6, lock hanging 12 upper ends that reset are connected the lower end and cooperate locking with lock tube 11 with insertion tube 1, lock nut 24 is locked in the insertion tube 1 of lock hanging 12 tops that reset, lock tube 26 upper ends are connected with lock nut 24, and the lower end cooperates locking with the lock hanging 12 that resets; Described release mechanism comprises separates lock ball 20, ball seat 23 and sliding sleeve 22, separating lock ball 20 is positioned on the ball seat 23, ball seat 23 is locked in the sliding sleeve 22, and the sliding sleeves 22 that drive lock nut 24 and 26 motions of lock tube are locked in the insertion tube 1 of lock nut 24 tops and seal pressure transmission hole 3 and stop up with the control fluid cylinder or work in advance.
In the utility model, the lock hanging 12 that the resets shape that distributes ringwise, the upper end is connected with insertion tube 1 inwall left hand thread, and connection of thread is between insertion tube 1 and lock tube 26, and the lower end be and lock 26 keyed end that cooperate.
Lock hanging 12 ends that reset are the coupling type step of the annular spread elastic webbing conical surface, and lock tube 11 ends are the cone step that cooperates with the coupling type step.
Lock tube 26 ends are provided with the annular boss that cooperates with lock hanging 12 inwalls that reset, and annular boss is the inclined-plane with the face that lock hanging 12 inwalls that reset cooperate.
Lock tube 26 upper ends are connected with lock nut 24 inner threads, and the annular boss of lower end is provided with afterburning hole 27.
Supporting base 13 is positioned at the housing 18 of tail pipe short circuit 19 upper ends, and supporting base 13 is connected with earial drainage self-locking plug 17 with the link of tail pipe short circuit 19 through lock pin.
Insertion tube 1 forms hermetically-sealed construction with the link of drilling rod short circuit 30 by hanger sealing shroud 28, and hanger sealing shroud 28 is between insertion tube 1 and hanger central tube.
Between the two public short circuits 6 of housing 18 and hanger, between housing 1 and the tail pipe short circuit 19, between housing 18 and the supporting base 13, between lock tube 11 and the hanger pair public short circuits 6, between lock tube 11 and the insertion tube 1, between insertion tube 1 and the drilling rod short circuit 30, between insertion tube 1 and the hanger sealing shroud 28, between insertion tube 1 and the sliding sleeve 22, between insertion tube 1 and the lock nut 24, be respectively arranged with joint ring between sliding sleeve 22 and the ball seat 23.
Between insertion tube 1 and the sliding sleeve, between insertion tube 1 and the lock nut 24, between sliding sleeve 22 and the ball seat 23, be respectively arranged with lock pin between supporting base 13 and the earial drainage self-locking plug 17.
Housing 18 1 ends are threaded with the two public short circuits 6 of hanger, and the other end is threaded with tail pipe short circuit 19.
The structure of lock hanging body and release mechanism is not limited to said structure, and those skilled in the art can also make some distortion according to foregoing, offers position or the like such as the shape and structure of boss, afterburning hole.
Embodiment 2
The utility model comprises housing, insertion tube, lock hanging body and release mechanism.Housing 18 upper ends are by the lower end that is threaded in the two public short circuits 6 of hanger, and housing 18 lower ends connect insertion tube 1 by lock hanging body by the tail pipe short circuit 19 that is threaded within the housing 18.Insertion tube 1 is by the lower end that is threaded in drilling rod short circuit 30, and insertion tube 1 inserts its top and hanger sealing shroud 28 formation hermetically-sealed constructions in the hanger, and insertion tube 1 bottom is provided with towards the pressure transmission hole 3 of hanger fluid cylinder and with release mechanism and links to each other with lock hanging body.
Lock hanging body is by lock tube 11, lock hanging 12 resets, supporting base 13, lock nut 24, lock tube 26 constitutes, the lower end of lock tube 11 upper ends between insertion tube 1 and the two public short circuits 6 of hanger, lock tube 11 lower ends are positioned at housing 18, lock hanging 12 upper ends that reset are connected the lower end of insertion tube 1 by left hand thread, lock hanging 12 lower ends that reset are positioned at lock tube 11, lock nut 24 is locked in by lock pin 7 and is positioned in the insertion tube 1 in the lock hanging 12 that resets, lock tube 26 upper ends are by being threaded in the lock nut 24, lock tube 26 lower ends are positioned at the lock hanging 12 that resets, supporting base 13 is positioned at the lower end of housing 18 and lock tube 11 and the upper end of tail pipe short circuit 19, and supporting base 13 lower ends connect earial drainage self-locking plug 17 by lock pin 15.
Release mechanism constitutes by separating lock ball 20, ball seat 23, sliding sleeve 22, separate that lock ball 20 is positioned on the ball seat 23, ball seat 23 is locked in sliding sleeve 22 by lock pin 5, sliding sleeve 22 is locked in by lock pin 4 and is positioned on the lock nut 24 in the insertion tube 1 and blocks pressure transmission hole 3 and stop up with the control fluid cylinder or work in advance.
Between the two public short circuits 6 of housing 18 and hanger, between housing 18 and the tail pipe short circuit 19 and be respectively arranged with joint ring 10, joint ring 16 and joint ring 14 between housing 18 and the supporting base 13; Between the two public short circuits 6 of lock tube 11 and hanger and be respectively arranged with joint ring 9 and joint ring 8 between lock tube 11 and the insertion tube 1; Between insertion tube 1 and the drilling rod short circuit 30, between insertion tube 1 and the hanger sealing shroud 28, between insertion tube 1 and the sliding sleeve 22 and be respectively arranged with joint ring 31, joint ring 29, joint ring 2 and joint ring 25 between insertion tube 1 and the lock nut 24; Between sliding sleeve 22 and ball seat 23, be provided with joint ring 21.
Be provided with cone step and afterburning hole 27 in lock tube 26 bottoms, be provided with the coupling type step of the annular spread elastic webbing conical surface in lock hanging 12 bottoms that reset, be provided with cone step in lock tube 11 lower ends and outer setting has the rectangle step.
When carrying out the tail tube hanging cementing operation: insertion tube 1 upper end by the lower end that is threaded in drilling rod short circuit 30 and install joint ring 31, is inserted insertion tube 1 in the hanger sealing shroud 28 and installed joint ring 29; Installation sliding sleeve 22 and ball seat 23 also install joint ring 2 and joint ring 21 and lock pin 4 and lock pin 5 respectively and block pressure transmission hole 3 in insertion tube 1; Lock nut 24 is installed under sliding sleeve 22 within the insertion tube 1 and is installed joint ring 25 and lock pin 7; Lower end between insertion tube 1 and the two public short circuits 6 of hanger is installed lock tube 11 and is installed joint ring 8 and joint ring 9, and the outer steps of lock tube 11 and the lower end of the two public short circuits 6 of hanger are coincide; Lock hanging 12 upper ends that reset are connected insertion tube 1 lower end by left hand thread, to lock tube 26 upper ends is threaded in the lock nut 24 in the lock hanging 12 that resets from lower to upper, the lock hanging 12 that resets that makes lock tube 26 lower step promote annular spread expands outwardly that the conical surface with lock tube 11 lower ends coincide and by 27 lockings of afterburning hole, connects and discharges control with the lock hanging that constitutes tail pipe.
Again with housing 18 upper ends by the lower end that is threaded in the two public short circuits 6 of hanger and install joint ring 10, in housing 18 and the lower end installation bearing seat 13 of lock tube 11 and install joint ring 14, connect earial drainage self-locking plugs 17 in supporting base 13 lower ends by lock pin 15, in housing 18 lower ends by being threaded tail pipe short circuit 19 and install joint ring 16.In the upper end of the lower end of tail pipe short circuit 19 and drilling rod short circuit 30 respectively by tail pipe post and the drill string of being threaded.Thus, drill string, drilling rod short circuit, insertion tube, lock hanging body, hanger, housing, tail pipe short circuit and tail pipe post are linked to be tail tube hanging well cementation tubing string together down to the down-hole desired location.
When implementing to hang operation, separate lock ball 20 from the well head input, separate lock ball 20 and move to the downward passage of shutoff on the ball seat 23 by insertion tube 1, the slush pump fluid injection presses 5～8MPa to make sliding sleeve 22 cut off lock pin 4 downwards to open the pressure transmission hole 3 that leads to fluid cylinder and hang operation then.When discharging tail pipe, filling hydraulic pressure 9～12MPa makes sliding sleeve 22 downward drive lock nuts 24 and lock tube 26 cut off lock pin 7 and comes downwards to lock hanging 12 upper ends that reset, make the step of lock tube 26 bottoms break away from the lock hanging 12 releasing locking controls that reset, lock tube 11 is left in the lock hanging 12 automatic resiliences that reset, and the two public short circuits 6 of the hanger that lock tube 11 outer steps are connected, housing 18, tail pipe short circuit 19 and bottom tail pipe post break away from the lock hanging that resets together and connect and be released.By carry on the well head that drill string observes that suspending weight changes or hydraulic pressure change judge that tail pipe discharges successfully after, hydraulic pressure 13～the 15MPa that annotates again makes ball seat 23 cut off bottom that lock pin 5 comes downwards to earial drainage self-locking plug 17 and opens circulation and carry out cementing, can take out drill string and insertion tube 1 after cementing is finished, make the suspension tail pipe post safe release that connects under the insertion tube 1 in the down-hole hanging position.
Claims (10)
1. oil gas well hydraulic liner releaser, comprise housing (18), insertion tube (1), lock hanging body and release mechanism, it is characterized in that: the two public short circuits (6) of described housing (18) one ends and hanger are tightly connected, and the other end and tail pipe short circuit (19) are tightly connected; Described insertion tube (1) one end and drilling rod short circuit (30) are tightly connected, and the other end lock hanging body interior with being arranged on housing (18) is connected, and has the pressure transmission hole (3) that leads to fluid cylinder on the insertion tube (1); Described lock hanging body comprises lock tube (11), lock hanging (12) resets, supporting base (13), lock nut (24) and lock tube (26), lock tube (11) one ends sealings is arranged on that the other end is positioned on the supporting base (13) between insertion tube (1) and the hanger pair public short circuits (6), reset lock hanging (12) upper end is connected the lower end with insertion tube (1) and cooperates locking with lock tube (11), lock nut (24) is locked in the insertion tube (1) of the lock hanging that resets (12) top, lock tube (26) upper end is connected with lock nut (24), the lower end cooperates locking with the lock hanging that resets (12), has afterburning hole (27) on the lock tube (26); Described release mechanism comprises separates lock ball (20), ball seat (23) and sliding sleeve (22), separating lock ball (20) is positioned on the ball seat (23), ball seat (23) is locked in the sliding sleeve (22), and it is interior and seal pressure transmission hole (3) that the sliding sleeve (22) that drives lock nut (24) and lock tube (26) motion is locked in the insertion tube (1) of lock nut (24) top.
2. oil gas well hydraulic liner releaser according to claim 1, it is characterized in that: the described lock hanging that resets (12) shape that distributes ringwise, the upper end is connected with insertion tube (1) inner thread, connection of thread is positioned between insertion tube (1) and the lock tube (26), and the lower end is the keyed end that cooperates with lock tube (26).
3. oil gas well hydraulic liner releaser according to claim 1 and 2 is characterized in that: the described lock hanging that resets (12) bottom is the coupling type step of the annular spread elastic webbing conical surface, and lock tube (11) bottom is the cone step that cooperates with the coupling type step.
4. oil gas well hydraulic liner releaser according to claim 1 and 2 is characterized in that: described lock tube (26) bottom is provided with the annular boss that cooperates with the lock hanging that resets (12) inwall, and annular boss is the inclined-plane with the face that the lock hanging that resets (12) inwall cooperates.
5. oil gas well hydraulic liner releaser according to claim 4 is characterized in that: described lock tube (26) upper end is connected with lock nut (24) inner thread, and the annular boss of lower end is provided with afterburning hole (27).
6. oil gas well hydraulic liner releaser according to claim 1 and 2, it is characterized in that: described supporting base (13) is positioned at the housing (18) of tail pipe short circuit (19) upper end, and supporting base (13) is connected with earial drainage self-locking plug (17) with the link of tail pipe short circuit (19) through lock pin.
7. oil gas well hydraulic liner releaser according to claim 1 and 2, it is characterized in that: described insertion tube (1) forms hermetically-sealed construction with the link of drilling rod short circuit (30) by hanger sealing shroud (28), and hanger sealing shroud (28) is positioned between insertion tube (1) and the hanger central tube.
8. oil gas well hydraulic liner releaser according to claim 1 and 2 is characterized in that: between the two public short circuits (6) of described housing (18) and hanger, between housing (18) and the tail pipe short circuit (19), between housing (18) and the supporting base (13), between the two public short circuits (6) of lock tube (11) and hanger, between lock tube (11) and the insertion tube (1), between insertion tube (1) and the drilling rod short circuit (30), between insertion tube (1) and the hanger sealing shroud (28), between insertion tube (1) and the sliding sleeve (22), between insertion tube (1) and the lock nut (24), be respectively arranged with joint ring between sliding sleeve (22) and the ball seat (23).
9. oil gas well hydraulic liner releaser according to claim 1 and 2 is characterized in that: between described insertion tube (1) and the sliding sleeve (22), between insertion tube (1) and the lock nut (24), between sliding sleeve (22) and the ball seat (23), be respectively arranged with lock pin between supporting base (13) and the earial drainage self-locking plug (17).
10. oil gas well hydraulic liner releaser according to claim 1 and 2 is characterized in that: described housing (18) one ends are threaded with the two public short circuits (6) of hanger, and the other end is threaded with tail pipe short circuit (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202200599U CN201695973U (en) | 2010-06-09 | 2010-06-09 | Hydraulic tail pipe releaser for oil gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202200599U CN201695973U (en) | 2010-06-09 | 2010-06-09 | Hydraulic tail pipe releaser for oil gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201695973U true CN201695973U (en) | 2011-01-05 |
Family
ID=43397213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202200599U Expired - Lifetime CN201695973U (en) | 2010-06-09 | 2010-06-09 | Hydraulic tail pipe releaser for oil gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201695973U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
-
2010
- 2010-06-09 CN CN2010202200599U patent/CN201695973U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035694A (en) * | 2018-01-03 | 2018-05-15 | 成都维泰油气能源技术有限公司 | A kind of cement retainer |
| CN108035694B (en) * | 2018-01-03 | 2023-11-24 | 成都维泰油气能源技术有限公司 | Cement retainer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |