CN104790893A - Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture - Google Patents
Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture Download PDFInfo
- Publication number
- CN104790893A CN104790893A CN201510076004.2A CN201510076004A CN104790893A CN 104790893 A CN104790893 A CN 104790893A CN 201510076004 A CN201510076004 A CN 201510076004A CN 104790893 A CN104790893 A CN 104790893A
- Authority
- CN
- China
- Prior art keywords
- central tube
- lock ring
- cover
- tool assembly
- calvus
- 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.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a feeding tool assembly for a suspending packer used for a horizontal well multi-sectional fracture. The feeding tool assembly comprises an upper connector, a central pipe, a lower connector, an upper connecting barrel, a lower connecting barrel and a guiding head which are sequentially connected from top to bottom. The lower end of the inner portion of the upper connector is fixedly connected with the upper end of the outer portion of the central pipe. The lower end of the outer portion of the upper connector is connected with an outer cover. The outer cover is provided with a guiding groove. A key is arranged in the guiding groove. The key is fixed to a fixed cover. The central pipe is sleeved with the fixed cover. The central pipe is sleeved with a locking ring. A locking ring cover which is connected with the locking ring through a connecting thread is arranged outside the locking ring. The upper end of an elastic claw is hung on the outer extending edge of the locking ring cover. The lower end of the locking ring cover is connected with the upper end of a piston. The outer circumferential faces of the upper connecting barrel and the lower connecting barrel are provided with multiple modules to be sealed. According to the feeding tool assembly, the hanging bearing capacity is large, when a pipe column is blocked, two solving modes with the large torque, the hydraulic pressure and the machinery are provided, the sealing performance is high, the safety and the reliability are achieved, and the operating risk is low.
Description
Technical field
The invention belongs to oil, natural gas completion technique field, enter in process to bear tubing string weight under horizontal well multistage fracturing string in particular to one, larger upper lifting force can be provided when tubing string is hampered and transfer power and larger moment of torsion, and the hanging packer in fracturing string can provide annular seal space when setting, can slip out of the hand smoothly after setting simultaneously, the running tool assembly that realization is carried.
Background technology
In horizontal well multistage fracturing work, running tool assembly should be able to bear tubing string weight, can provide when tubing string is hampered larger on put and put supporting capacity and larger moment of torsion, and provide annular seal space when the hanging packer in fracturing string sets, can smoothly slip out of the hand after setting simultaneously.
The running tool assembly of current known hanging packer, the main technological deficiency existed is as follows: put 1) that to put supporting capacity little.2) moment of torsion can not be provided to rotate forward tubing string.3) mode of slipping out of the hand is single, and hydraulic release grip or machinery are slipped out of the hand.4) when being hampered, can not carry out large load puts putting, high pulling torque can not be provided to rotate tubing string, and process is hampered limited in one's ability.Current also do not have a kind of running tool of hanging packer can avoid above whole defect simultaneously.
Summary of the invention
The present invention provides a kind of running tool assembly of horizontal well multistage pressure break hanging packer for solving in known technology the technical problem that exists, this running tool assembly enters in process to bear tubing string weight under horizontal well multistage fracturing string, larger upper lifting force can be provided when tubing string is hampered and transfer power and larger moment of torsion, and the hanging packer in fracturing string provides annular seal space when setting, can slip out of the hand smoothly after setting on realizing simultaneously and carry.
The present invention for the technical scheme solving in known technology the technical problem that exists and take is: a kind of running tool assembly of horizontal well multistage pressure break hanging packer, comprise connect successively from top to bottom top connection, central tube, lower contact, connection top cylinder, connect doffing and seeker; The interior lower end of described top connection and the outer upper ends of described central tube affixed, be connected with overcoat in the outside lower end of described top connection; Described outer cover is provided with gathering sill, in described gathering sill, is provided with key, described key is fixed on fixed cover, and described fixed cover is sleeved on described central tube; Described central tube is formed the lower limit step of described fixed cover; The cylindrical of described central tube is set with spring, and described spring clip is pressed between described top connection and described fixed cover; Described central tube is set with lock ring, and described lock ring and described central tube adopt the unidirectional buttless thread to upper driving to be connected, and be provided with and its lock ring cover be connected by connecting thread, be provided with overhanging edge in the lower end that described lock ring overlaps outside described lock ring; The upper end of elastic claw hangs over the overhanging along upper of described lock ring cover, described elastic claw adopts tubular structure, top is the cylinder that sidewall is closed, bottom is multiple calvus, and all described calvus are circumferentially uniform, is provided with interval between adjacent two described calvus, described calvus is obliquely installed, upper end is by inner, and lower end is outer, and the lower end of described calvus is provided with the pawl head of evagination; Cannelure is formed between the lower end of described overcoat and the upper end of described lower contact; The pawl head of described calvus is arranged in described cannelure; The bottom of described lock ring cover is connected with the upper end of piston, and described piston is connected with described central tube by shear pin I; In described piston, bottom is provided with support set, described support set sealing is fixedly set on described central tube, at described central tube, between described support set and described piston, be formed with pressure chamber, described central tube is provided with the pressure transmission hole be communicated with described pressure chamber; Described fixed cover is positioned at the top of described lock ring; The periphery of described connection top cylinder and described connection doffing is equipped with multiple tracks module sealing, and the two ends up and down of per pass module sealing are respectively provided with one spacer ring.
Outside the bottom of described top connection, be formed with step trough, it is a shallow slot and a deep trouth at the end that described step trough is provided with step surface; Be formed with the grafting teeth of protrusion in the upper end of described overcoat, described grafting teeth are inserted in the shallow slot of described step trough, and are connected by shear pin II with described top connection; The periphery that described lock ring overlaps is fixed with jump ring, and described jump ring is positioned at the top of described elastic claw.
The lower end of described seeker is formed with the outer chamfering conical surface.
The advantage that the present invention has and good effect are:
Running tool assembly advantage of the present invention is: by the structure adopting key to be connected with hanging packer with elastic claw, this running tool assembly is made to enter in process to bear tubing string weight under horizontal well multistage fracturing string, larger upper lifting force can be provided when tubing string is hampered and transfer power and larger moment of torsion, being convenient to de-plugging; By adopting the structure being provided with multiple tracks module sealing on connection top cylinder with the periphery being connected doffing, when the hanging packer of this running tool assembly in fracturing string is set, provide annular seal space; By adopting hydraulic release grip and mechanical integrated structure of slipping out of the hand, making this running tool after hanging packer sets, can slip out of the hand smoothly on realizing and carrying.In sum, suspended load ability of the present invention large, high pulling torque can be provided when tubing string is hampered, possess hydraulic pressure and machinery two kinds of modes of slipping out of the hand, sealing is high, safe and reliable, operating risk is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the decomposing schematic representation that top connection of the present invention is connected with overcoat.
In figure: 1-top connection, 2-fixing pin, 3-spring, 4-central tube, 5-overcoat, 6-key, 7-fixed cover, 8-fixing pin, 9-jump ring, 10-lock ring, 11-lock ring cover, 12-piston, 13-shear pin I, 14-elastic claw, 15-support set, 16-fixing pin, 17-lower contact, 18-connection top cylinder, 19-spacer ring, 20-module sealing, 21-connect doffing, 22-seeker, 23-shear pin II, 24-pressure transmission hole, 25-pressure chamber.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 and Fig. 2, a kind of running tool assembly of horizontal well multistage pressure break hanging packer, comprise connect successively from top to bottom top connection 1, central tube 4, lower contact 17, connect top cylinder 18, connect doffing 21 and seeker 22; The interior lower end of described top connection 1 and the outer upper ends of described central tube 4 affixed, be connected with overcoat 5 in the outside lower end of described top connection 1; Described overcoat 5 is provided with gathering sill, is provided with key 6 in described gathering sill, described key 6 is fixed on fixed cover 7, and described fixed cover 7 is sleeved on described central tube 4; Described central tube 4 is formed the lower limit step of described fixed cover 4, the cylindrical of described central tube 4 is set with spring 3, described spring 3 clamps between described top connection 1 and described fixed cover 7.
Described central tube 4 is set with lock ring 10, described lock ring 10 and described central tube 4 adopt the unidirectional buttless thread to upper driving to be connected, be provided with outside described lock ring 10 and overlap 11 with its lock ring be connected by connecting thread, be provided with overhanging edge in the lower end of described lock ring cover 11, the upper end of elastic claw 14 hangs over the overhanging along upper of described lock ring cover 11.
Described elastic claw 14 adopts tubular structure, and top is the cylinder that sidewall is closed, and bottom is multiple calvus, and all calvus are circumferentially uniform, and be provided with interval between adjacent calvus, calvus is obliquely installed, and upper end is by inner, and lower end is outer, and the lower end of calvus is provided with the pawl head of evagination.
Cannelure is formed between the lower end and the upper end of described lower contact 17 of described overcoat 5; The pawl head of described calvus is arranged in described cannelure.The bottom of described lock ring cover 11 and the upper end of piston 12 affixed, piston 12 is connected with central tube 4 by shear pin I 13; In piston 12, bottom is provided with support set 15, and described support set 15 sealing is fixedly set on central tube 4, at central tube 4, is formed with pressure chamber 25 between support set 15 and piston 12, central tube 4 is provided with the pressure transmission hole 24 be communicated with pressure chamber 25.
Described fixed cover 7 is positioned at the top of described lock ring 10.
The periphery of described connection top cylinder 18 and described connection doffing 21 is equipped with multiple tracks module sealing 20, and the two ends up and down of per pass module sealing 20 are respectively provided with one spacer ring 19.
Described fixed cover 7 can slide up and down on described central tube 4, and described central tube 4 can rotate relative to described fixed cover 7.
In the present embodiment, the interior lower end of described top connection 1 and the outer upper ends of described central tube 4 are by fixing pin 2 be threaded.The inner upper end of described lower contact 17 and the outside lower end of described central tube 4 are by fixing pin 16 and be threaded.Described key 6 and fixed cover 7 adopt fixing pin 8 to be connected.
In the present embodiment, giving up, being also provided with following structure to realize machinery: outside the bottom of described top connection 1, be formed with step trough, it is a shallow slot and a deep trouth at the end that described step trough is provided with step surface; Be formed with the grafting teeth of protrusion in the upper end of described overcoat 5, described grafting teeth are inserted in the shallow slot of described step trough, and are connected by shear pin II 23 with described top connection 1; The periphery of described lock ring cover 11 is fixed with jump ring 9, described jump ring 9 be positioned at described elastic claw 14 above.The conveniently insertion of instrument, is formed with the outer chamfering conical surface in the lower end of described seeker 22.
Operating principle of the present invention:
1) process is sent into: above-mentioned running tool assembly inserts hanging packer inside mechanically, key is made to insert the keyway of hanging packer upper end, elastic claw tangles the groove on hanging packer top, connects top cylinder and is connected doffing and hanging packer and is formed and seal.Above-mentioned running tool assembly can bear fracturing string load, and suspended load ability is not less than 80T.
2) feeding process is hampered: because elastic claw has tangled the groove on hanging packer top, what can provide large load raises and decentralizes ability, by raising and decentralizing the object that can reach unblocking; Simultaneously the coordinating of key and hanging packer upper end keyway, can high pulling torque be provided, also can realize unblocking further by rotation tubing string.
3) hydraulic release grip process: the inside that the sealing mechanism due to running tool assembly bottom inserts hanging packer realizes sealing, when running tool band hanging packer enters after well puts in place, suppress in central tube, pressure, by pressure transmission hole, enters pressure chamber, promotes piston and cuts off shear pin I, drive lock ring unidirectional up, and then drive elastic claw to be retracted in overcoat, depart from the upper groove of hanging packer, realize slipping out of the hand.The special tooth form design of lock ring inside ensures that lock ring can only upwards one-way movement, can not carry out bidirectional-movement, namely can not move downward, and ensures to slip out of the hand reliable.
4) machinery is slipped out of the hand process: as hydraulic release grip lost efficacy, top connection is rotated backward, under the effect of high pulling torque, cuts off shear pin II, makes the grafting teeth of outer set upper side depart from step surface, relative with the deep trouth bottom surface of step trough; Press down top connection, downward power is applied to central tube, and then make elastic claw be subject to the effect of downward power, under the effect of hanging packer upper groove reaction force, elastic claw is up, and then promotes jump ring, drive lock ring and piston stroking upward, cut off shear pin I, finally realize the up recovery of elastic claw, realize machinery and slip out of the hand.
In sum, the present invention enters in process to bear tubing string weight under horizontal well multistage fracturing string, when tubing string is hampered, larger upper lifting force can be provided, transfer power and larger moment of torsion, when hanging packer sets, for it provides annular seal space, after hanging packer sets, can slip out of the hand smoothly on realizing and carry.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not 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 scope of the present invention.
Claims (3)
1. a running tool assembly for horizontal well multistage pressure break hanging packer, is characterized in that, comprise connect successively from top to bottom top connection, central tube, lower contact, connection top cylinder, connect doffing and seeker;
The interior lower end of described top connection and the outer upper ends of described central tube affixed, be connected with overcoat in the outside lower end of described top connection; Described outer cover is provided with gathering sill, in described gathering sill, is provided with key, described key is fixed on fixed cover, and described fixed cover is sleeved on described central tube; Described central tube is formed the lower limit step of described fixed cover; The cylindrical of described central tube is set with spring, and described spring clip is pressed between described top connection and described fixed cover; Described central tube is set with lock ring, and described lock ring and described central tube adopt the unidirectional buttless thread to upper driving to be connected, and be provided with and its lock ring cover be connected by connecting thread, be provided with overhanging edge in the lower end that described lock ring overlaps outside described lock ring; The upper end of elastic claw hangs over the overhanging along upper of described lock ring cover, described elastic claw adopts tubular structure, top is the cylinder that sidewall is closed, bottom is multiple calvus, and all described calvus are circumferentially uniform, is provided with interval between adjacent two described calvus, described calvus is obliquely installed, upper end is by inner, and lower end is outer, and the lower end of described calvus is provided with the pawl head of evagination; Cannelure is formed between the lower end of described overcoat and the upper end of described lower contact; The pawl head of described calvus is arranged in described cannelure; The bottom of described lock ring cover is connected with the upper end of piston, and described piston is connected with described central tube by shear pin I; In described piston, bottom is provided with support set, described support set sealing is fixedly set on described central tube, at described central tube, between described support set and described piston, be formed with pressure chamber, described central tube is provided with the pressure transmission hole be communicated with described pressure chamber; Described fixed cover is positioned at the top of described lock ring;
The periphery of described connection top cylinder and described connection doffing is equipped with multiple tracks module sealing, and the two ends up and down of per pass module sealing are respectively provided with one spacer ring.
2. the running tool assembly of horizontal well multistage pressure break hanging packer according to claim 1, is characterized in that, outside the bottom of described top connection, be formed with step trough, and it is a shallow slot and a deep trouth at the end that described step trough is provided with step surface; Be formed with the grafting teeth of protrusion in the upper end of described overcoat, described grafting teeth are inserted in the shallow slot of described step trough, and are connected by shear pin II with described top connection; The periphery that described lock ring overlaps is fixed with jump ring, and described jump ring is positioned at the top of described elastic claw.
3. the running tool assembly of horizontal well multistage pressure break hanging packer according to claim 1, is characterized in that, the lower end of described seeker is formed with the outer chamfering conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076004.2A CN104790893A (en) | 2015-02-12 | 2015-02-12 | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076004.2A CN104790893A (en) | 2015-02-12 | 2015-02-12 | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790893A true CN104790893A (en) | 2015-07-22 |
Family
ID=53556029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076004.2A Pending CN104790893A (en) | 2015-02-12 | 2015-02-12 | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790893A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239945A (en) * | 2015-10-22 | 2016-01-13 | 中国海洋石油总公司 | Rotary setting tool for tubular column |
| CN109653694A (en) * | 2019-02-19 | 2019-04-19 | 中科金佳（北京）油田技术开发有限公司 | A kind of bearing assembly for tubing string |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
| CN114753790A (en) * | 2022-04-08 | 2022-07-15 | 中海油能源发展股份有限公司 | Branch well hydraulic rotating tool and operation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB718976A (en) * | 1951-12-13 | 1954-11-24 | Baker Oil Tools Inc | Improvements in or relating to couplings for rods, tubes, and the like |
| RU2203385C2 (en) * | 2001-02-02 | 2003-04-27 | Махир Зафар оглы Шарифов | String disconnector |
| CN2697305Y (en) * | 2004-02-06 | 2005-05-04 | 盘锦金盘科技有限责任公司 | Lock block type hydraulic releasing gadget |
| CN2732983Y (en) * | 2004-08-06 | 2005-10-12 | 盘锦辽河油田科技实业有限公司 | Hydraulic packer release |
| RU2289012C2 (en) * | 2004-07-19 | 2006-12-10 | Махир Зафар оглы Шарифов | Connector-disconnector for well packer plant (variants) |
| CN201024938Y (en) * | 2007-03-14 | 2008-02-20 | 中国海洋石油总公司 | A hydraulic pressure release and salvage tool |
| CN201236652Y (en) * | 2008-06-06 | 2009-05-13 | 中国海洋石油总公司 | Feeding and extracting tool of guiding device |
| CN202108439U (en) * | 2011-05-13 | 2012-01-11 | 中国石油天然气股份有限公司 | Releasing tool |
| CN202194613U (en) * | 2011-06-30 | 2012-04-18 | 中国石油集团川庆钻探工程有限公司 | Hydraulic drilling-free suspension packer |
| CN202866705U (en) * | 2012-11-16 | 2013-04-10 | 中国石油集团渤海钻探工程有限公司 | Rotary setting release tool capable of being used by both hanger and packer |
-
2015
- 2015-02-12 CN CN201510076004.2A patent/CN104790893A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB718976A (en) * | 1951-12-13 | 1954-11-24 | Baker Oil Tools Inc | Improvements in or relating to couplings for rods, tubes, and the like |
| RU2203385C2 (en) * | 2001-02-02 | 2003-04-27 | Махир Зафар оглы Шарифов | String disconnector |
| CN2697305Y (en) * | 2004-02-06 | 2005-05-04 | 盘锦金盘科技有限责任公司 | Lock block type hydraulic releasing gadget |
| RU2289012C2 (en) * | 2004-07-19 | 2006-12-10 | Махир Зафар оглы Шарифов | Connector-disconnector for well packer plant (variants) |
| CN2732983Y (en) * | 2004-08-06 | 2005-10-12 | 盘锦辽河油田科技实业有限公司 | Hydraulic packer release |
| CN201024938Y (en) * | 2007-03-14 | 2008-02-20 | 中国海洋石油总公司 | A hydraulic pressure release and salvage tool |
| CN201236652Y (en) * | 2008-06-06 | 2009-05-13 | 中国海洋石油总公司 | Feeding and extracting tool of guiding device |
| CN202108439U (en) * | 2011-05-13 | 2012-01-11 | 中国石油天然气股份有限公司 | Releasing tool |
| CN202194613U (en) * | 2011-06-30 | 2012-04-18 | 中国石油集团川庆钻探工程有限公司 | Hydraulic drilling-free suspension packer |
| CN202866705U (en) * | 2012-11-16 | 2013-04-10 | 中国石油集团渤海钻探工程有限公司 | Rotary setting release tool capable of being used by both hanger and packer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239945A (en) * | 2015-10-22 | 2016-01-13 | 中国海洋石油总公司 | Rotary setting tool for tubular column |
| CN105239945B (en) * | 2015-10-22 | 2018-02-23 | 中海油能源发展股份有限公司 | Tubing string rotates tripping in instrument |
| CN111022015A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Horizontal well open hole staged fracturing pipe column well descending device |
| CN109653694A (en) * | 2019-02-19 | 2019-04-19 | 中科金佳（北京）油田技术开发有限公司 | A kind of bearing assembly for tubing string |
| CN109653694B (en) * | 2019-02-19 | 2024-03-08 | 中科金佳（北京）油田技术开发有限公司 | Bearing assembly for tubular column |
| CN114753790A (en) * | 2022-04-08 | 2022-07-15 | 中海油能源发展股份有限公司 | Branch well hydraulic rotating tool and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104790893A (en) | Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture | |
| CN103216210B (en) | Sand control top packer | |
| CN104975810A (en) | Totally-mechanical top-drive casing device by adoption of externally-clamping mode | |
| CN104314486A (en) | Hydraulic power slip of removable oil string | |
| CN101864923A (en) | Split type anchor suspension packer | |
| CN202866705U (en) | Rotary setting release tool capable of being used by both hanger and packer | |
| CN106907120B (en) | Slip out of the hand tool and its construction method are sent into for SIMULATION STUDY OF GRAVEL PACKING IN HORIZONTAL WELL sand control pipe | |
| CN102493774B (en) | Hanger packer is general rotatablely sets releasing tool | |
| CN117027785B (en) | Oil layer sampling device and method for geological investigation | |
| CN204225800U (en) | A kind of hydraulic power slip of dismantled and assembled petroleum pipe column | |
| CN201443351U (en) | Novel packer | |
| CN105672944A (en) | Sliding sleeve opening device | |
| CN211008561U (en) | Mechanical packer | |
| CN104329046A (en) | Rotary hydraulic packer | |
| CN108533203B (en) | Multifunctional integrated device for unlocking and fishing coiled tubing | |
| CN102650196A (en) | Buckle type elevator | |
| CN104420846B (en) | Suspension packer | |
| CN206707629U (en) | Integral joint casing tripping in device | |
| CN202249868U (en) | Pressing type sleeve reversing device | |
| CN102022092B (en) | Open hole packer and tapping tool used together with same | |
| CN201448073U (en) | Self-dragging resisting slip | |
| CN201474663U (en) | Ball seat open type bypass valve pocket | |
| CN204082086U (en) | A kind of recoverable hanging packer | |
| CN204163680U (en) | A kind of rotating hydraulic packer | |
| CN201439695U (en) | Pair-buckle type reversing overshot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate 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: 20161228 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. |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150722 |