CN209115073U - A kind of bindiny mechanism and fluid excluder - Google Patents
A kind of bindiny mechanism and fluid excluder Download PDFInfo
- Publication number
- CN209115073U CN209115073U CN201821885824.1U CN201821885824U CN209115073U CN 209115073 U CN209115073 U CN 209115073U CN 201821885824 U CN201821885824 U CN 201821885824U CN 209115073 U CN209115073 U CN 209115073U
- Authority
- CN
- China
- Prior art keywords
- bindiny mechanism
- limit hole
- connector
- hole
- separation apparatus
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to natural gas technical field of petroleum extraction, the utility model provides a kind of bindiny mechanism and fluid excluder, wherein the opposite deflection angle of the first connector and the second connector is limited, exempt from downhole tool in this way by excessive deflection will not occur when safety valve, downhole tool is avoided to be stuck in safety valve.Meanwhile bindiny mechanism provided by the embodiment of the utility model is simpler relative to existing Universal connecting mechanism structure, amount of parts is less, and cost is lower, and reliability is higher.
Description
Technical field
The utility model relates to natural gas technical field of petroleum extraction more particularly to a kind of bindiny mechanisms and fluid to insulate
Device.
Background technique
During natural gas or oil exploitation, need for various downhole tools to be placed in hoistway, and make downhole tool edge
Hoistway is moved upwardly or downwardly.In some cases, hoistway is not that vertically downward, such as inclined shaft and horizontal well, hoistway are vertical
After extending downwardly a distance, even horizontal extension can be changed into diagonally downward.Even there is sinuous extension rail in some hoistways
Mark.This causes influence to the passability of downhole tool.In order to enable downhole tool by hoistway knee, downhole tool
Length cannot design too much, otherwise will lead to downhole tool and be stuck in hoistway.
It in the related technology, can be using Universal connecting mechanism by multiple downhole tools in order to improve the passability of downhole tool
It is connected to form underground tool string.When underground tool string is when by hoistway knee, connected downhole tool can be in universal company
Opposite deflection occurs under the action of connection mechanism, underground tool string is enabled to pass through hoistway knee.
But inventor has found that above-mentioned underground tool string is easy to be stuck in the safety valve of well head.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of bindiny mechanism, pass through the connection machine
The downhole tool of structure connection, is not only able to pass through underground knee, additionally it is possible to avoid being stuck in the valve body of well head.
Another of the utility model is designed to provide a kind of fluid excluder with above-mentioned bindiny mechanism.
The embodiments of the present invention are achieved through the following technical solutions:
A kind of bindiny mechanism, for connecting oil/gas well downhole tool, bindiny mechanism includes the first connector, the second connector
And locating part；First connector has opposite receiving end and the first connecting pin for connecting with downhole tool, accommodates end
End face offers receiving hole；The circumferential surface for accommodating end offers the first limit hole；Second connector has opposite insertion end and use
In the second connection end being connect with downhole tool；Insertion end is inserted into receiving hole, and insertion end is used to radially transport relative to receiving hole
It is dynamic；The second limit hole corresponding with the first limit hole is offered in insertion end；One end of locating part and the fixed company of the first limit hole
It connects, the other end of locating part can be inserted into radially movablely in the second limit hole, so that insertion end can be relative to receiving hole axial direction
Movement；Alternatively, one end of locating part is fixedly connected with the second limit hole, the other end of locating part can be inserted into first radially movablely
In limit hole, so that insertion end can be axially moved relative to receiving hole.
Further, insertion end is cylinder, and receiving hole is circular hole, and the diameter of insertion end is less than the internal diameter of receiving hole.
Further, the second limit hole is circular hole, and one end of locating part is fixedly connected with the first limit hole；Locating part it is another
One end is cylinder, internal diameter of the diameter less than the second limit hole.
Further, the first limit hole is circular hole, and one end of locating part is fixedly connected with the second limit hole, locating part it is another
One end is cylinder, internal diameter of the diameter less than the first limit hole.
Further, the first connector and the second connector are hollow tubular structure.
A kind of fluid excluder, fluid excluder include attachment device and at least two fluid separation apparatus；Fluid partitioning
Device includes mandrel, the driving mechanism around multiple packer accessories of mandrel arrangement and for driving packer accessory radial motion；Phase
The mandrel of adjacent fluid separation apparatus is connected by attachment device；Attachment device includes at least above-mentioned any one bindiny mechanism.
Further, attachment device includes bindiny mechanism, and adjacent fluid separation apparatus is connected by bindiny mechanism；Wherein
The mandrel of one fluid separation apparatus is connect with the first connecting pin, and the mandrel and second connection end of another fluid separation apparatus connect
It connects.
Further, attachment device includes extension bar and the bindiny mechanism for being connected to extension bar both ends；Adjacent fluid
Separating device is connect with the bindiny mechanism at extension bar both ends respectively.
Further, extension bar is made up of by least two the sub- extension bar that bindiny mechanism connects.
The technical solution of the utility model is at least had the following advantages and beneficial effects:
Inventor has found why existing underground tool string is difficult to the valve body by well head, it is due to it
In Universal connecting mechanism can generate excessive deflection angle.Either select cardan (hookes)universal joint, weiss universal joint
Or rzeppa joint, the very big opposite deflection of angle can be generated between two adjacent downhole tools.Work as downhole tool
By well head safety valve when, in case of excessive deflection, the end that will lead to downhole tool withstands on the interior of well mouth release valve
Wall, and then downhole tool is caused to be stuck in safety valve.For this purpose, the utility model embodiment provides a kind of bindiny mechanism, wherein
The opposite deflection angle of first connector and the second connector be it is limited, exempting from downhole tool in this way will not when by safety valve
Excessive deflection occurs, downhole tool is avoided to be stuck in safety valve.Meanwhile bindiny mechanism's phase provided by the embodiment of the utility model
Simpler for existing Universal connecting mechanism structure, amount of parts is less, and cost is lower, and reliability is higher.
Fluid excluder provided by the embodiment of the utility model also can be avoided due to having above-mentioned bindiny mechanism
It is stuck in the appearance of the situation in safety valve.
Detailed description of the invention
It is to be used attached to being needed in embodiment below for the clearer technical solution for illustrating the utility model embodiment
Figure is briefly described.It should be appreciated that the following drawings illustrates only the certain embodiments of the utility model, it is not construed as pair
The limitation of the scope of the utility model.To those skilled in the art, without creative efforts, Neng Gougen
Other accompanying drawings are obtained according to these attached drawings.
Fig. 1 is the schematic perspective view for the bindiny mechanism that the utility model embodiment 1 provides；
Fig. 2 is the schematic diagram of the section structure for the bindiny mechanism that the utility model embodiment 1 provides；
Fig. 3 is the external structure schematic diagram for the fluid excluder that the utility model embodiment 2 provides；
Fig. 4 is the schematic diagram of the section structure for the fluid excluder that the utility model embodiment 2 provides；
Fig. 5 is the external structure schematic diagram for the fluid excluder that the utility model embodiment 3 provides.
In figure: 010- bindiny mechanism；020- fluid excluder；The first connector of 100-；101- accommodates end；102- first connects
Connect end；103- receiving hole；The first limit hole of 104-；The second connector of 200-；201- insertion end；202- second connection end；203-
Second limit hole；300- locating part；400- fluid separation apparatus；410- mandrel；420- packer accessory；430- driving mechanism；500-
Attachment device；510- extension bar；The sub- extension bar of 511-.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing, to this
Technical solution in utility model embodiment carries out clear, complete description.Obviously, described embodiment is the utility model
A part of the embodiment, instead of all the embodiments.
Therefore, below to the detailed description of the embodiments of the present invention be not intended to limit claimed it is practical new
The range of type, but it is merely representative of the section Example of the utility model.Based on the embodiments of the present invention, this field is general
Logical technical staff every other embodiment obtained without creative efforts belongs to the utility model guarantor
The range of shield.
It should be noted that in the absence of conflict, feature in the embodiments of the present invention and embodiment and
Technical solution can be combined with each other.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside"
For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put
The orientation or positional relationship that relationship or those skilled in the art usually understand, this kind of term are merely for convenience of description originally
Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.
Term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Embodiment 1:
The present embodiment provides a kind of bindiny mechanism 010, Fig. 1 is the stereochemical structure of bindiny mechanism 010 provided in this embodiment
Schematic diagram.Fig. 1 is please referred to, bindiny mechanism 010 includes the first connector 100, the second connector 200 and locating part 300.
Fig. 2 is the schematic diagram of the section structure of bindiny mechanism 010 provided in this embodiment.Incorporated by reference to referring to Figures 1 and 2,
In the present embodiment, the first connector 100 and the second connector 200 are cylindrical-shaped structure, so that the cross section of bindiny mechanism 010
The cross-sectional shape of shape and petroleum or natural gas well hoistway is adapted.It should be understood that in other embodiments, first connects
Fitting 100 and the second connector 200 can not also use cylindrical structure, for example, the first connector 100 and the second connector
200 cross-sectional shape can be direction, ellipse, polygon or other shapes.
First connector 100 has opposite both ends, is to accommodate end 101 and the first connecting pin 102 respectively.Accommodating end
101 end face offers receiving hole 103, and the first limit hole 104 is offered on the circumferential surface of receiving hole 103.
Second connector 200 also has opposite both ends, is insertion end 201 and second connection end 202 respectively.Insertion end
The second limit hole 203 is offered on 201.
Insertion end 201 is inserted into receiving hole 103, and the cross-sectional area of insertion end 201 is less than the cross section of receiving hole 103
Product, enables insertion end 201 to do radial motion relative to receiving hole 103 in receiving hole 103.In order to make 201 phase of insertion end
It is more smooth for the radial motion of receiving hole 103, the friction between insertion end 201 and the hole wall of receiving hole 103 is reduced, at this
In embodiment, insertion end 201 is cylinder, and receiving hole 103 is circular hole.The diameter of insertion end 201 is less than receiving hole 103
Internal diameter forms annular when insertion end 201 is in coaxial position with receiving hole 103 between insertion end 201 and receiving hole 103
Gap.It should be understood that in other embodiments, the cross-sectional shape side of can be of insertion end 201 and receiving hole 103
To, ellipse, polygon or other shapes, as long as can ensure that insertion end 201 can freely do diameter relative to receiving hole 103
To movement.
First limit hole 104 is identical with the quantity of the second limit hole 203, and quantity can be 1,2 or multiple.?
In the present embodiment, 3 the first limit holes 104 are evenly arranged around the central axes of receiving hole 103.Likewise, 3 the second limit holes
203 are evenly arranged around the central axes of insertion end 201.When insertion end 201 is inserted into 103 inside of receiving hole, the first limit hole
104 and second limit hole 203 can be aligned.
Locating part 300 is column structure, and one end of locating part 300 is fixedly connected with the first limit hole 104, locating part 300
The other end be inserted into the second limit hole 203 in, locating part 300 can be relative to 203 radial motion of the second limit hole, this to be inserted into
End 201 can axially move relative to receiving hole 103.In order to make radial direction fortune of the locating part 300 relative to the second limit hole 203
It is dynamic more smooth, the friction between locating part 300 and the hole wall of the second limit hole 203 is reduced, in the present embodiment, the second limit
Hole 203 is circular hole, and one end that locating part 300 is inserted into the second limit hole 203 is cylinder.The diameter of second limit hole 203 is greater than
Locating part 300 is inserted into the diameter of one end of the second limit hole 203.It should be understood that in other embodiments, the second limit hole
203 and locating part 300 be inserted into the second limit hole 203 one end cross-sectional shape can be direction, ellipse, polygon or its
His shape, as long as can ensure that locating part 300 is inserted into one end of the second limit hole 203 and can do relative to the second limit hole 203
Radial motion.In the present embodiment, locating part 300 is provided with external screw thread far from one end of the second limit hole 203, and first
104 inner wall of limit hole is provided with internal screw thread, and locating part 300 is threadedly coupled with the first limit hole 104.In other embodiments,
Locating part 300 can also be fixed with the first limit hole 104 by other modes such as welding, Nian Jie or interference fits.
First connecting pin 102 of the first connector 100 is for connecting downhole tool, the second connection of the second connector 200
End 202 is also used for connection downhole tool.The underground work that the structure of first connecting pin 102 and second connection end 202 is connected according to it
Tool is set.
Bindiny mechanism 010 provided in this embodiment can occur relatively radially to transport between insertion end 201 and receiving hole 103
It is dynamic, and relative axial movement can occur between insertion end 201 and receiving hole 103.Radial motion and axial movement combine
The opposite deflection of the first connector 100 and the second connector 200 can be realized.And then it is connected to the well at 010 both ends of bindiny mechanism
Lower tool can also occur to deflect relatively, can pass through hoistway knee.Meanwhile between insertion end 201 and receiving hole 103
The range of radial motion be it is limited, and the range being axially moved between insertion end 201 and receiving hole 103 be also it is limited,
This makes the opposite deflection angle of the first connector 100 and the second connector 200 limited.It so can be to avoid the first connector
100 and second the excessive deflection of angle occurs between connector 200, and then avoids the underground for being connected to 010 both ends of bindiny mechanism
The excessive deflection of angle occurs between tool, reduces the risk that downhole tool is stuck in safety valve.It can be seen that the present embodiment
The bindiny mechanism 010 of offer, simpler relative to existing Universal connecting mechanism structure, amount of parts is less, and cost is more
Low, reliability is higher.
Further, in the present embodiment, the first connector 100 and the second connector 200 are hollow tubular structure,
So when being mechanically connected or being electrically connected between the downhole tool for being connected to 010 both ends of bindiny mechanism, interconnecting piece
Part can be connected the receiving of mechanism 010, so improve the safety for being mechanically connected or being electrically connected between downhole tool.
Embodiment 2:
The present embodiment provides a kind of fluid excluder 020, Fig. 3 is the outside of fluid excluder 020 provided in this embodiment
Structural schematic diagram, Fig. 4 are the schematic diagram of the section structure of fluid excluder 020 provided in this embodiment.Incorporated by reference to referring to Fig. 3 and figure
4.Fluid excluder 020 provided in this embodiment includes two fluid separation apparatus 400.Fluid separation apparatus 400 can be claimed again
For plunger, it is used to for the hydrops of petroleum or natural gas well shaft bottom being lifted to outside well.Under closing well state, fluid partitioning dress
It sets 400 and falls to shaft bottom under the effect of gravity.Under the state of driving a well, the fluid pressure thereunder of fluid separation apparatus 400
Uplink under the action of power, and then the hydrops above it is lifted to upwards to well head, hydrops is expelled to outside well by well head.This
Sample can avoid petroleum caused by hydrops or the decline of natural gas well yield.Fluid separation apparatus 400 includes mandrel 410, surrounds
Multiple packer accessories 420 that mandrel 410 is arranged and the driving mechanism 430 for driving 420 radial motion of packer accessory.Driving mechanism
430 can be the spring being arranged between packer accessory 420 and mandrel 410.Under the action of driving mechanism 430, packer accessory 420
With hoistway inner wall against and then reducing the circulation area between fluid separation apparatus 400 and hoistway.Under closing well state, shaft bottom
It is small with the pressure difference of well head, the downlink under the action of self-weight of fluid separation apparatus 400.Under the state of driving a well, the pressure in shaft bottom and well head
It is poor big, due to circulation area under the action of driving mechanism 430 and packer accessory 420 between fluid separation apparatus 400 and hoistway
It reduces, so that fluid separation apparatus 400 is able to bear enough upwards thrusts and lifts hydrops uplink.
The axial length of fluid separation apparatus 400 cannot design too much, and otherwise will lead to fluid separation apparatus 400 can not
Pass through hoistway knee.The axial length of fluid separation apparatus 400 can not be designed too small, otherwise will increase fluid partitioning dress
Set 400 probabilities being stuck in well mouth release valve.In order to balance the above two o'clock, fluid excluder 020 provided in this embodiment includes
Two fluid separation apparatus 400.Two fluid separation apparatus 400 are connected by attachment device 500, attachment device 500 herein
For the bindiny mechanism 010 recorded in embodiment 1.The mandrel 410 of one of fluid separation apparatus 400 and the first connector 100
The connection of the first connecting pin 102, the first connecting pin 102 integrated molding of specific mandrel 410 and the first connector 100.It is another
The mandrel 410 of a fluid separation apparatus 400 is connect with the second connection end 202 of the second connector 200, specific mandrel 410 with
The second connection end 202 of second connector 200 is integrally formed.In this way, single fluid separation apparatus 400 can be designed to smaller
Length, and it is limited to generate angle between two adjacent fluid separation apparatus 400 under the action of bindiny mechanism 010
Opposite deflection, enable fluid excluder 020 to pass through hoistway knee.In addition, the entire length of fluid excluder 020 compared with
Greatly, and between two neighboring fluid separation apparatus 400 deflection angle generated be it is limited, enable fluid excluder 020
It enough passes through at well mouth release valve, avoids being stuck in well head safe.
It should be noted that in other embodiments, the quantity of fluid separation apparatus 400 is not limited to two, Ke Yiwei
Three even more, connected between adjacent fluid separation apparatus 400 by attachment device 500.
Embodiment 3:
The present embodiment provides a kind of fluid excluder 020, Fig. 5 is the outside of fluid excluder 020 provided in this embodiment
Structural schematic diagram.Fluid excluder 020 provided in this embodiment includes two fluid separation apparatus 400.Fluid separation apparatus 400
It is described in example 2, details are not described herein again.Two fluid separation apparatus 400 are connected by attachment device 500.Even
Connection device 500 includes extension bar 510 and the bindiny mechanism 010 for being connected to 510 both ends of extension bar.Bindiny mechanism 010 is to implement
The bindiny mechanism recorded in example 1.Adjacent fluid separation apparatus 400 connects with the bindiny mechanism 010 at 510 both ends of extension bar respectively
It connects.
Further, extension bar 510 is also connected by two by the sub- extension bar 511 that bindiny mechanism 010 connects.It can be with
Understand, in other embodiments, the quantity of sub- extension bar 511 can be two or more, lead between adjacent sub- extension bar 511
Cross the connection of bindiny mechanism 010.
It should be understood that in other embodiments, fluid excluder 020 may include multiple fluid separation apparatus 400, phase
It is connected between adjacent fluid separation apparatus 400 by attachment device 500.
The foregoing is merely the section Examples of the utility model, are not intended to limit the utility model, for this
For the technical staff of field, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of bindiny mechanism (010), for connecting oil/gas well downhole tool, which is characterized in that bindiny mechanism (010) packet
Include the first connector (100), the second connector (200) and locating part (300)；
First connector (100) has opposite receiving end (101) and the first connecting pin for connecting with downhole tool
(102), the end face for accommodating end (101) offers receiving hole (103)；The circumferential surface for accommodating end (101) offers first
Limit hole (104)；
Second connector (200) has opposite insertion end (201) and the second connection end for connecting with downhole tool
(202)；The insertion end (201) is inserted into the receiving hole (103), and the insertion end (201) is used for relative to the receiving
Hole (103) radial motion；The second limit hole corresponding with the first limit hole (104) is offered on the insertion end (201)
(203)；
One end of the locating part (300) is fixedly connected with first limit hole (104), the locating part (300) it is another
End can be inserted into radially movablely in second limit hole (203), so that the insertion end (201) can be relative to the receiving
Hole (103) is axially moved；Alternatively, one end of the locating part (300) is fixedly connected with second limit hole (203), it is described
The other end of locating part (300) can be inserted into radially movablely in first limit hole (104), so that the insertion end (201)
It can be axially moved relative to the receiving hole (103).
2. bindiny mechanism (010) according to claim 1, it is characterised in that:
The insertion end (201) is cylinder, and the receiving hole (103) is circular hole, and the diameter of the insertion end (201) is less than institute
State the internal diameter of receiving hole (103).
3. bindiny mechanism (010) according to claim 1, it is characterised in that:
Second limit hole (203) is circular hole；The other end of the locating part (300) is cylinder, and diameter is less than described
The internal diameter of second limit hole (203).
4. bindiny mechanism (010) according to claim 1, it is characterised in that:
First limit hole (104) is circular hole, and the other end of the locating part (300) is cylinder, and diameter is less than described
The internal diameter of first limit hole (104).
5. bindiny mechanism described in any one of -4 (010) according to claim 1, it is characterised in that:
First connector (100) and second connector (200) are hollow tubular structure.
6. a kind of fluid excluder (020), it is characterised in that:
The fluid excluder (020) includes attachment device (500) and at least two fluid separation apparatus (400)；
The fluid separation apparatus (400) includes mandrel (410), around multiple packer accessories (420) of the mandrel (410) arrangement
And the driving mechanism (430) for driving the packer accessory (420) radial motion；
The mandrel (410) of the adjacent fluid separation apparatus (400) is connected by the attachment device (500)；It is described
Attachment device (500) includes at least bindiny mechanism (010) described in any one of claim 1-5.
7. fluid excluder (020) according to claim 6, it is characterised in that:
The attachment device (500) includes bindiny mechanism (010), and the adjacent fluid separation apparatus (400) passes through the company
Connection mechanism (010) connection；The mandrel (410) of one of them fluid separation apparatus (400) and first connecting pin
(102) it connects, the mandrel (410) of another fluid separation apparatus (400) is connect with the second connection end (202).
8. fluid excluder (020) according to claim 6, it is characterised in that:
The attachment device (500) includes extension bar (510) and the bindiny mechanism for being connected to the extension bar (510) both ends
(010)；The adjacent fluid separation apparatus (400) connects with the bindiny mechanism (010) at the extension bar (510) both ends respectively
It connects.
9. fluid excluder (020) according to claim 8, it is characterised in that:
The extension bar (510) is made up of by least two the sub- extension bar (511) that the bindiny mechanism (010) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885824.1U CN209115073U (en) | 2018-11-15 | 2018-11-15 | A kind of bindiny mechanism and fluid excluder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885824.1U CN209115073U (en) | 2018-11-15 | 2018-11-15 | A kind of bindiny mechanism and fluid excluder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115073U true CN209115073U (en) | 2019-07-16 |
Family
ID=67205337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821885824.1U Active CN209115073U (en) | 2018-11-15 | 2018-11-15 | A kind of bindiny mechanism and fluid excluder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386250A (en) * | 2018-11-15 | 2019-02-26 | 成都百胜野牛科技有限公司 | A kind of bindiny mechanism and fluid excluder |
-
2018
- 2018-11-15 CN CN201821885824.1U patent/CN209115073U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386250A (en) * | 2018-11-15 | 2019-02-26 | 成都百胜野牛科技有限公司 | A kind of bindiny mechanism and fluid excluder |
| CN109386250B (en) * | 2018-11-15 | 2024-01-12 | 成都百胜野牛科技有限公司 | Coupling mechanism and fluid packer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104563938B (en) | Continuous shocking tool | |
| US4919560A (en) | Oil well sucker rod | |
| CN209115073U (en) | A kind of bindiny mechanism and fluid excluder | |
| US3884051A (en) | Bearing structure for telescoping well tool | |
| CN104389528B (en) | Lower curved section pumping rod universal section formula attachment means in ground driving oil-extracting screw pump well | |
| CN107701142A (en) | A kind of testing pressure of well head rotary sealing type casing blanking plug | |
| CN106609659A (en) | Hydraulic expansion type remote-control variable-diameter stabilizer | |
| CN109386250A (en) | A kind of bindiny mechanism and fluid excluder | |
| CN209510607U (en) | A kind of plunger | |
| CN205277348U (en) | Hydraulic releasing tool | |
| CN209539319U (en) | Piston type tests envelope well packer capable of flushing well certainly | |
| CN201090161Y (en) | New type connection and sealing structure for expansion tube | |
| CN103603617A (en) | Gas injection tubular column releasing device | |
| CN206299350U (en) | Horizontal well completion tubular pile is oriented to resistance absorber | |
| CN213116999U (en) | Telescopic rod | |
| CN211974903U (en) | Variable diameter stabilizer direction dabber | |
| CN202402007U (en) | Free falling type drill-free stage collar | |
| CN201334889Y (en) | PT packer | |
| CN110107250A (en) | A kind of plunger | |
| CN112664149A (en) | Flexible short section with axial elastic long rod bearing force | |
| CN211397535U (en) | Packer (CN) | |
| CN206280058U (en) | The leather cup packing fracturing string of anti-leather cup abrasion | |
| CN208605138U (en) | Scalable oil pipe is shorted | |
| CN216517865U (en) | Variable diameter centralizer center slot shaft | |
| CN109538168A (en) | A kind of fluid separation apparatus and hoistway structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |