CN105239943A - Multifunctional string lifting appliance - Google Patents
Multifunctional string lifting appliance Download PDFInfo
- Publication number
- CN105239943A CN105239943A CN201510556728.7A CN201510556728A CN105239943A CN 105239943 A CN105239943 A CN 105239943A CN 201510556728 A CN201510556728 A CN 201510556728A CN 105239943 A CN105239943 A CN 105239943A
- Authority
- CN
- China
- Prior art keywords
- seating nipple
- transmitting joint
- tieback
- hole
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a multifunctional string lifting appliance, comprising a tie-back module, a torque-bearing module, a locking module and a lifting module connected with one another. The multifunctional string lifting appliance can apply hydraulic pressure on the ground to lift a downhole string at the premise of not moving a wellhead, the ground applied hydraulic pressure enables the downhole string to descend, torque is transmitted in the whole course, an elongation state is locked during tripping-in, and the ground applied hydraulic pressure is unlocked after the string is descended in place. The multifunctional string lifting appliance is applicable to clean-up of injection wells.
Description
Technical field
The present invention relates to a kind of supporting technology promoting water injection well downhole production tubing string under the prerequisite of motionless well head, particularly relate to a kind of multi-functional tubing string lifting appliance down-hole string being promoted by ground applying hydraulic pressure.
Background technology
Can remove or alleviate by water injection well well-flushing the water pollution and blocking that shaft bottom has been subjected to nearby, thus renwing stratum water absorbing capacity, ensure normal water filling and test.Water injection well needs well-flushing in situations: (1) stops note more than 24 hours; (2) poor water quality injected; (3) under same operating, water injection rate declines more than 15%; (4) by specifying to time between well-flushings; (5) before allotment and after allotment.
The separate water injection well of Bohai Bay Oil employing sand control completion technique, usually with insertion sealing on its flow string, insertion seals with the sealing drum one_to_one corresponding of sand control letting-in tool, coordinates, and plays zonal isolation, for seperated layer water injection creates condition.Meanwhile, insert sealing with sealing drum with the use of, also plug the well-flushing circulation canal of oil jacket annular space and oil pipe, be provided with obstacle to the well-flushing of this type of separate water injection well.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, there is provided a kind of to use on water injection well, can realize under the prerequisite of motionless well head that ground applies that hydraulic pressure makes that down-hole string promotes, ground applies that hydraulic pressure makes that down-hole string is descending, transmitting torque in whole course, under enter in process to be locked in elongation state, transfer ground after putting in place and apply the multi-functional tubing string lifting appliance that hydraulic pressure unlocks.
The object of the invention is to be achieved through the following technical solutions.
Multi-functional tubing string lifting appliance of the present invention, is made up of interconnective tieback module, bearing torque module, locking module and hoisting module.
Described tieback module comprises top connection, and described top connection bottom is connected with tieback seating nipple, and described tieback seating nipple lower outside is connected with tieback sub, and described tieback sub lower inside is connected with hung drum.
Described bearing torque module comprises the upper pressure-transmitting joint being connected to described hung drum lower outside, moment of torsion seating nipple is provided with in described upper pressure-transmitting joint, hung drum, tieback seating nipple, six axial straight troughs are evenly distributed with in the middle part of described moment of torsion work tube outer surface, described upper pressure-transmitting joint inner surface is provided with the straight trough straight trough one to one with moment of torsion work tube outer surface, is provided with feather key in described straight trough.The through hole that the axis that is provided with the sidewall of described upper pressure-transmitting joint runs through, and external surface top is provided with a groove.
Described locking module comprises the main piston being connected to described moment of torsion seating nipple lower outside, outside described main piston, middle and upper part is provided with the annular protrusion of integrative-structure, described annular protrusion is evenly distributed with four axially extending bores, axially be provided with unblock piston in described through hole block up and unlock piston, described main piston bottom is arranged with lock ring cover.Described lock ring cover sidewall is evenly provided with axially extending bore, be provided with cannelure, and bottom internal diameter is greater than upper end internal diameter in the middle part of inner surface.
Described hoisting module comprises the interior seating nipple being connected to described main piston lower inner surface, described interior seating nipple external surface is arranged with lower pressure-transmitting joint, be connected with outer working tube outside described lower pressure-transmitting joint, described outer working tube top is fixedly connected with described upper pressure-transmitting joint.The external diameter of described lower pressure-transmitting joint upper end is less than lower outer diameter, and internal diameter is greater than lower inner diameter, be provided with the stop screw being positioned at described lock ring cover sidewall axially extending bore, and upper end is fixedly installed between described lock ring cover and main piston by shear pin and lock ring.Described lower pressure-transmitting joint external surface is provided with groove, and groove bottom is provided with the through hole with the band plug of axes normal, and the inner side lower wall of described groove is provided with the circular hole becoming 9 ° of angles with axis, and described circular hole is connected with lower side through hole.
Be provided with through hole in the middle part of described tieback sub sidewall, in through hole, be provided with plug.
It is leg-of-mutton groove that described upper pressure-transmitting joint top is evenly provided with cross section.
Through-hole inner surface top on described main piston sidewall is provided with screw thread, and middle part is smooth, cylindrical peripheral surface, and the aperture of bottom is little compared with the aperture at top and middle part, and the inwall of described through hole is provided with an axial rectangular channel.
Be set to eccentric structure in the middle part of described outer working tube, and the protrusion sidewall of eccentric structure is provided with a vertical groove.
Compared with prior art, the beneficial effect that technical scheme of the present invention is brought is:
(1) the present invention by by main piston, unlock piston and block up, unlock the locking module that piston and lock ring cover form, and stop screw, lock ring cover and shear pin, can ensure that the present invention is locked in elongation state all the time entering in well process, and transfer put in place after ground apply hydraulic pressure and can unlock.
(2) lower pressure-transmitting joint and interior seating nipple is provided with in the present invention, two through holes of lower pressure-transmitting joint form lower oil circuit interface, hydraulic oil is injected at lower oil circuit interface, by the annular space of lower pressure-transmitting joint and interior seating nipple, enter main piston cavity of resorption, promotion main piston and interior seating nipple move up, and achieve and at ground applying hydraulic pressure, tubing string are promoted;
(3) the upper pressure-transmitting joint of band axially extending bore is provided with in the present invention, hydraulic oil is injected to through hole, hydraulic oil enters the epicoele of main piston, promote main piston, moment of torsion seating nipple and interior seating nipple move down, and then achieve ground applying hydraulic pressure make tubing string descending.
(4) be provided with in the present invention appearance wear the moment of torsion seating nipple of straight trough, inner surface belt straight trough upload crimping and feather key, in whole strokes of main piston upstream or downstream, feather key is on straight trough all the time, limit relatively rotating of moment of torsion seating nipple and upper pressure-transmitting joint, thus limit relatively rotating of top connection and interior seating nipple, achieve the function of transmitting torque in whole course of the present invention.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of top connection in Fig. 1.
Fig. 3 is the structural representation of tieback seating nipple in Fig. 1.
Fig. 4 is the structural representation of moment of torsion seating nipple in Fig. 1.
Fig. 5 is the structural representation of tieback sub in Fig. 1.
Fig. 6 is the structural representation of hung drum in Fig. 1.
Fig. 7 is the structural representation of upper pressure-transmitting joint in Fig. 1.
Fig. 8 is the top view of upper pressure-transmitting joint in Fig. 1.
Fig. 9 unlocks the stifled structural representation of piston in Fig. 1.
Figure 10 is the structural representation of main piston in Fig. 1.
Figure 11 is the top view of main piston in Fig. 1.
Figure 12 is the structural representation unlocking piston in Fig. 1.
Figure 13 is the structural representation of lock ring cover in Fig. 1.
Figure 14 is the top view of lock ring cover in Fig. 1.
Figure 15 is the structural representation of lock ring in Fig. 1.
Figure 16 is the structural representation of Fig. 1 outer work cylinder.
Figure 17 is the top view of Fig. 1 outer work cylinder.
Figure 18 is the structural representation of lower pressure-transmitting joint in Fig. 1.
Figure 19 is the structural representation of interior seating nipple in Fig. 1.
Reference numeral: on 1 top connection 2 tieback seating nipple 3 moment of torsion seating nipple 4 plug 5 tieback sub 6 hung drum 7, pressure-transmitting joint 8 feather key 9 unlocks stifled 10 main pistons 11 of piston and unlocks piston 12 lock ring and overlap seating nipple in 13 stop screw 14 shear pin 15 lock ring 16 outer working tubes, 17 times pressure-transmitting joints 18
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Multi-functional tubing string lifting appliance of the present invention, is made up of interconnective tieback module, bearing torque module, locking module and hoisting module.
Described tieback module comprises top connection 1, there is tieback seating nipple 2 described top connection 1 bottom by screwed connection, described tieback seating nipple 2 lower outside has tieback sub 5 by screwed connection, is provided with through hole in the middle part of described tieback sub 5 sidewall, in through hole, screwed connection is provided with plug 4.Described tieback sub 5 lower inside has hung drum 6 by screwed connection.Described tieback sub about 5 two ends also can be provided with steady nail, are fixedly connected with respectively with tieback seating nipple 2 with hung drum 6.
Described bearing torque module comprises by surely nail and screwed connection are in the upper pressure-transmitting joint 7 of described hung drum 6 lower outside, and it is leg-of-mutton groove that described upper pressure-transmitting joint 7 top evenly can be provided with cross section, to install.Be provided with moment of torsion seating nipple 3 in described upper pressure-transmitting joint 7, hung drum 6, tieback seating nipple 2, described moment of torsion seating nipple 3 upper end and tieback seating nipple 2 and hung drum 6 contact position can be respectively arranged with O shape ring recess, are provided with O shape circle and back-up ring in groove.Be evenly distributed with six axial straight troughs in the middle part of described moment of torsion seating nipple 3 external surface, described upper pressure-transmitting joint 7 inner surface is provided with the straight trough straight trough one to one with moment of torsion seating nipple 3 external surface, is provided with feather key 8 in described straight trough.Described feather key 8 can slide in moment of torsion seating nipple 3 external surface straight trough, the moment of torsion suffered by upper pressure-transmitting joint 7 can be delivered to moment of torsion seating nipple 3 again.The through hole that the axis that is provided with the sidewall of described upper pressure-transmitting joint 7 runs through, as top hydraulic fluid flow paths, and external surface top is provided with a groove, as liquid controling pipe line stopper slot.
Described locking module comprise by surely nail and screwed connection in the main piston 10 of described moment of torsion seating nipple 3 lower outside, outside described main piston 10, middle and upper part is provided with the annular protrusion of integrative-structure, described annular protrusion is evenly distributed with four axially extending bores, axially be provided with in described through hole and unlock piston stifled 9 and unlock piston 11, unlock piston 11 and can be provided with O type ring recess, be provided with O type circle and back-up ring in groove, described main piston 10 bottom is arranged with lock ring cover 12.Through-hole inner surface top on described main piston 10 sidewall is provided with screw thread, and middle part is smooth, cylindrical peripheral surface, and the aperture of bottom is little compared with the aperture at top and middle part, and the inwall of described through hole is provided with an axial rectangular channel, is conducive to unlocking piston stifled 9 and moves up and down.Described lock ring overlaps 12 sidewalls and is evenly provided with axially extending bore, is provided with cannelure in the middle part of inner surface, and bottom internal diameter is greater than upper end internal diameter.
Described hoisting module comprises by screwed connection seating nipple 18 in described main piston 10 lower inner surface, described interior seating nipple 18 external surface is arranged with lower pressure-transmitting joint 17, be connected with outer working tube 16 by screw thread and steady nail outside described lower pressure-transmitting joint 17, described outer working tube 16 top is fixedly connected with surely following closely by screw thread with described upper pressure-transmitting joint 7.The external diameter of described lower pressure-transmitting joint 17 upper end is less than lower outer diameter, internal diameter is greater than lower inner diameter, be provided with and be positioned at the stop screw 13 that described lock ring overlaps 12 sidewall axially extending bores, and upper end is fixedly installed between described lock ring cover 12 and main piston 10 by shear pin 14 and lock ring 15.Described lower pressure-transmitting joint 17 external surface is provided with groove, groove bottom is provided with the through hole with the band plug 4 of axes normal, the inner side lower wall of described groove is provided with the circular hole becoming 9 ° of angles with axis, described circular hole is connected with lower side through hole, these two apertures form lower hydraulic oil oil circuit jointly, inject high pressure liquid force feed by lower hydraulic oil oil circuit, main piston 10 can be promoted and move upward.Eccentric structure can be set in the middle part of described outer working tube 16, and the protrusion sidewall of eccentric structure is provided with a vertical groove.
In the present invention each parts contact surface between can O type circle and back-up ring be set as required, seal.Top connection 1 in the present invention, tieback seating nipple 2 are deposited respectively with remainder of the present invention, are transported and enter well, reduce working length.When plug 4 in the present invention is installed at the scene, can action pressure-testing joint be replaced by and apply hydraulic pressure, the sealing performance that before the present invention enters well, two O shapes of inspection moment of torsion seating nipple 3 upper end are enclosed.
Assembly program of the present invention:
(1) O type circle and back-up ring are installed to the O shape ring recess unlocking piston 11;
(2) press unlocking piston 11 four through holes that main piston 10 sidewall is put in drawing direction;
(3) unblock piston stifled 9 is installed, tightens screw thread;
(4) seal of main piston 10 endoporus is installed;
(5) connect moment of torsion seating nipple 3 and main piston 10, tighten screw thread, install and surely follow closely;
(6) seal of pressure-transmitting joint 7 endoporus and appearance is installed;
(7) upper pressure-transmitting joint 7 is sheathed on outside moment of torsion seating nipple 3 by drawing direction;
(8) in the gathering sill of moment of torsion seating nipple 3, feather key 8 is placed;
(9) pressure-transmitting joint 7 in dragging, makes feather key 8 enter pressure-transmitting joint 7 endoporus, enters groove;
(10) connect hung drum 6 and upper pressure-transmitting joint 7, tighten screw thread, install and surely follow closely;
(11) seal of mounting torque seating nipple 3 appearance;
(12) seal of tieback sub 5 endoporus is installed;
(13) on tieback sub 5, plug 4 is installed; Tighten screw thread;
(14) connect tieback sub 5 and hung drum 6, tighten screw thread, install and surely follow closely;
(15) connect main piston 10 and interior seating nipple 18, tighten screw thread, install and surely follow closely;
(16) pressure-transmitting joint 7 and outer working tube 16 in connection, tighten screw thread, install and surely follow closely;
(17) lock set ring set 12 on main piston 10;
(18) seal of lower pressure-transmitting joint 17 endoporus and external surface is installed;
(19) plug 4 is installed in the drawing position on lower pressure-transmitting joint 17, tightens screw thread;
(20) active lock ring set 12, installs lock ring 15, enters groove;
(21) installed part stop screw 13 and shear pin 14;
(22) outer working tube 16 and lower pressure-transmitting joint 17 is connected.Perform following steps as required;
(23) seal of joint 1 endoporus is installed;
(24) connect tieback seating nipple 2 and top connection 1, tighten screw thread, install and surely follow closely;
(25) connect tieback seating nipple 2 and tieback sub 5, install and surely follow closely.
Operation procedure of the present invention, the process of going into the well by sequentially setting forth the present invention and water injection well flow string from bottom to up:
(1) a 1/4 〞 liquid controling pipe line is passed hole and the groove of outer working tube 16 outer wall, and be connected with the lower oil circuit interface in lower pressure-transmitting joint 17;
(2) another root 1/4 〞 liquid controling pipe line is connected with the upper oil circuit interface in upper pressure-transmitting joint 7;
(3) by entering bottom water injection well flow string under technological design;
(4) be connected with tieback sub 5 with auxiliary short circuit, sling the present invention;
(5) interior seating nipple 18 is connected with bottom water injection well flow string, transfers tubing string;
(6) place seat card at hung drum 6 place, unload auxiliary short circuit;
(7) tieback seating nipple 2 bottom screw thread is connected with tieback sub 5, transfers tubing string;
(8) top water injection well flow string is connected with top connection 1, transfers tubing string, sit well head;
(9) on ground, two 1/4 〞 liquid controling pipe lines are connected with hydraulic oil pumping system, fulfil assignment.
Operating principle of the present invention:
(1) enter in well process in the present invention, the inner surface of lock ring 15 holds the cannelure of main piston 10 lower end tightly, and the external surface of lock ring 15 is subject to the constraint of lock ring cover 12; Shear pin 14 limits moving up and down of lock ring cover 12, and stop screw 13 limits the rotation of lock ring cover 12.So the present invention enters in well process be locked in elongation state all the time.
(2) after being put into design attitude under the invention, hydraulic oil is injected by the upper oil circuit interface in 1/4 〞 liquid controling pipe line upwards pressure-transmitting joint 7, hydraulic oil enters the epicoele of main piston 10, promotion unlocks piston stifled 9 and unlocks piston 11 and moves downward, and then shear pin 14 cut off by promotion lock ring cover 12, and lock ring cover 12 moves down, until lock ring 15 loses outer table constraint, enter lock ring and overlap 12 endoporus, now the present invention unlocks, and can freely promote or descending.
(3) hydraulic oil is injected by the lower oil circuit interface in the downward pressure-transmitting joint of 1/4 〞 liquid controling pipe line 17, by the annular space of lower pressure-transmitting joint 17 with interior seating nipple 18, hydraulic oil enters the cavity of resorption of main piston 10, promote main piston 10 to move up with interior seating nipple 18, drive bottom flow string upwards to promote.
(4) hydraulic oil is injected by the upper oil circuit interface in 1/4 〞 liquid controling pipe line upwards pressure-transmitting joint 7, hydraulic oil enters the epicoele of pressure-transmitting joint 7, promote main piston 10, moment of torsion seating nipple 3 moves down with interior seating nipple 18, promote bottom flow string descending.
(5) straight trough of moment of torsion seating nipple 3 external surface and the straight trough of upper pressure-transmitting joint 7 inner surface together constitute the sliding rail of feather key.In whole strokes of main piston 10 upstream or downstream, feather key 8 is on sliding rail all the time, limit relatively rotating of moment of torsion seating nipple 3 and upper pressure-transmitting joint 7, thus limit relatively rotating of top connection 1 and interior seating nipple 18, achieve the function of transmitting torque in whole course of the present invention.
Although be described function of the present invention and the course of work by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned concrete function and the course of work; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection of the present invention.
Claims (5)
1. a multi-functional tubing string lifting appliance, is characterized in that, is made up of interconnective tieback module, bearing torque module, locking module and hoisting module.
Described tieback module comprises top connection (1), described top connection (1) bottom is connected with tieback seating nipple (2), described tieback seating nipple (2) lower outside is connected with tieback sub (5), and described tieback sub (5) lower inside is connected with hung drum (6).
Described bearing torque module comprises the upper pressure-transmitting joint (7) being connected to described hung drum (6) lower outside, moment of torsion seating nipple (3) is provided with in described upper pressure-transmitting joint (7), hung drum (6), tieback seating nipple (2), six axial straight troughs are evenly distributed with in the middle part of described moment of torsion seating nipple (3) external surface, described upper pressure-transmitting joint (7) inner surface is provided with the straight trough straight trough one to one with moment of torsion seating nipple (3) external surface, is provided with feather key (8) in described straight trough.The through hole that the axis that is provided with the sidewall of described upper pressure-transmitting joint (7) runs through, and external surface top is provided with a groove.
Described locking module comprises the main piston (10) being connected to described moment of torsion seating nipple (3) lower outside, middle and upper part, described main piston (10) outside is provided with the annular protrusion of integrative-structure, described annular protrusion is evenly distributed with four axially extending bores, axially be provided with in described through hole and unlock piston stifled (9) and unlock piston (11), described main piston (10) bottom is arranged with lock ring cover (12).Described lock ring cover (12) sidewall is evenly provided with axially extending bore, be provided with cannelure, and bottom internal diameter is greater than upper end internal diameter in the middle part of inner surface.
Described hoisting module comprises the interior seating nipple (18) being connected to described main piston (10) lower inner surface, described interior seating nipple (18) external surface is arranged with lower pressure-transmitting joint (17), described lower pressure-transmitting joint (17) outside is connected with outer working tube (16), and described outer working tube (16) top is fixedly connected with described upper pressure-transmitting joint (7).The external diameter of described lower pressure-transmitting joint (7) upper end is less than lower outer diameter, internal diameter is greater than lower inner diameter, be provided with the stop screw (13) being positioned at described lock ring cover (12) sidewall axially extending bore, and upper end is fixedly installed between described lock ring cover (12) and main piston (10) by shear pin (14) and lock ring (15).Described lower pressure-transmitting joint (17) external surface is provided with groove, groove bottom is provided with the through hole with the band plug (4) of axes normal, the inner side lower wall of described groove is provided with the circular hole becoming 9 ° of angles with axis, and described circular hole is connected with lower side through hole.
2. multi-functional tubing string lifting appliance according to claim 1, is characterized in that, is provided with through hole in the middle part of described tieback sub (5) sidewall, is provided with plug (4) in through hole.
3. multi-functional tubing string lifting appliance according to claim 1, is characterized in that, it is leg-of-mutton groove that described upper pressure-transmitting joint (7) top is evenly provided with cross section.
4. multi-functional tubing string lifting appliance according to claim 1, it is characterized in that, through-hole inner surface top on described main piston (10) sidewall is provided with screw thread, middle part is smooth, cylindrical peripheral surface, the aperture of bottom is little compared with the aperture at top and middle part, and the inwall of described through hole is provided with an axial rectangular channel.
5. multi-functional tubing string lifting appliance according to claim 1, is characterized in that, described outer working tube (16) middle part is set to eccentric structure, and the protrusion sidewall of eccentric structure is provided with a vertical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556728.7A CN105239943B (en) | 2015-09-02 | 2015-09-02 | Multi-functional tubing string lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556728.7A CN105239943B (en) | 2015-09-02 | 2015-09-02 | Multi-functional tubing string lifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105239943A true CN105239943A (en) | 2016-01-13 |
| CN105239943B CN105239943B (en) | 2017-10-17 |
Family
ID=55037737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510556728.7A Expired - Fee Related CN105239943B (en) | 2015-09-02 | 2015-09-02 | Multi-functional tubing string lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105239943B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832128A (en) * | 1986-10-17 | 1989-05-23 | Shell Pipe Line Corporation | Wellhead assembly for injection wells |
| US6367552B1 (en) * | 1999-11-30 | 2002-04-09 | Halliburton Energy Services, Inc. | Hydraulically metered travel joint |
| CN202338261U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Repeated oil pipe plug |
-
2015
- 2015-09-02 CN CN201510556728.7A patent/CN105239943B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4832128A (en) * | 1986-10-17 | 1989-05-23 | Shell Pipe Line Corporation | Wellhead assembly for injection wells |
| US6367552B1 (en) * | 1999-11-30 | 2002-04-09 | Halliburton Energy Services, Inc. | Hydraulically metered travel joint |
| CN202338261U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Repeated oil pipe plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105239943B (en) | 2017-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3011516C (en) | Compensated top drive unit and elevator links | |
| CN106761541B (en) | Hydraulic anchoring sealing device | |
| CN204436318U (en) | A kind of paired cable passes through packer | |
| CN203412563U (en) | Drillable slide sleeve | |
| CN105370241B (en) | It is a kind of for abandoned well with boring packing device and method | |
| CN203742541U (en) | Anti-gas-channeling well cementation guaranteeing device for bottom of well | |
| CN105239943A (en) | Multifunctional string lifting appliance | |
| CN112177561B (en) | Bridge plug feeder, cementing plug pipe column and cementing plug process | |
| CN209908438U (en) | Disposable type tail pipe hanger | |
| CN109057732B (en) | Slurry type grouting circulating device and using method thereof | |
| CN204252930U (en) | Fracturing packer | |
| CN105696966A (en) | Anti-scouring packer | |
| CN108798615A (en) | A kind of the dispensing completion tubular column and no killing well well-completing process of water injection well | |
| CN204200133U (en) | A kind of drilling and coring delivery ball-throwing apparatus | |
| CN204175184U (en) | Multilateral Wells window opening tool | |
| CN203547657U (en) | Circulating valve | |
| CN110344778A (en) | Workover treatment rotary chuck | |
| CN213039250U (en) | Small-diameter stage cementing device | |
| RU128896U1 (en) | DEVICE FOR TRANSFER OF WELLS, INCLUDING WATERFILLED, TO OPERATION ON TWO LIFT COLUMNS | |
| CN105239935A (en) | Spiral reverse circulation drilling tool for coal seam drilling | |
| CN204804761U (en) | Pass through a well completion with exempting from to bore stopper cementing ware | |
| CN113445954A (en) | Circulating oil pipe liquid accuse environmental protection blowout preventer under pump | |
| CN208749327U (en) | A kind of double-throw ball is non-above to mention desealed blocking packer | |
| CN109779588B (en) | Steam injection, leakage-proof back flushing and production integrated tubular column for thermal production well | |
| CN104895527A (en) | Drilling-plug-free cementing device for full hole completion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170113 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Applicant after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Energy Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171017 Termination date: 20200902 |