CN208900077U - A kind of landing nipple for the control of cementing plug operation plug face - Google Patents
A kind of landing nipple for the control of cementing plug operation plug face Download PDFInfo
- Publication number
- CN208900077U CN208900077U CN201821425467.0U CN201821425467U CN208900077U CN 208900077 U CN208900077 U CN 208900077U CN 201821425467 U CN201821425467 U CN 201821425467U CN 208900077 U CN208900077 U CN 208900077U
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- CN
- China
- Prior art keywords
- drilling rod
- plug
- impacting seat
- cementing
- reducer union
- 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.)
- Expired - Fee Related
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Abstract
The utility model uses a kind of landing nipple for the control of cementing plug operation plug face, the landing nipple is used cooperatively with drilling rod and cementing head, cementing head is arranged in drilling rod upper end, landing nipple includes the rubber plug being preset in cementing head and is arranged in the reducer union that drilling rod lower end communicates setting with drilling rod, reducer union is in cavity structure, the releasable connection of minimum diameter position has impacting seat in reducer union, is equipped with the circulation passage communicated with reducer union in impacting seat；In use, rubber plug is by moving up into impacting seat internal resistance flow blocking circulation passage under external force drives edge drilling rod axial direction and squeezing impacting seat, rubber plug, which squeezes impacting seat, separates impacting seat with reducer union.It has all been replaced in tubing string by the way that whether the cement slurry in rubber plug and impacting seat progress bruising detection drilling rod passes through displacement fluid, it is more accurate in such a way that calculation is got in the prior art to cry, it is excessive or very few to avoid displacement fluid addition, cause cementing plug to fail, is also easy to the problem of causing the engineering accidents such as bit freezing.
Description
Technical field
The utility model relates to drillng operation technical fields, and in particular to it is a kind of for cementing plug operation plug face control
Landing nipple.
Background technique
During oil gas drilling, either drillng operation or completion practice are frequently necessary to carry out cementing plug operation,
Cementing plug operation is mainly used for backfilling a certain well section or abandoned well, solves the problems, such as blind hole during drilling well, provides ground for open hole test
Anchor etc..
Before cementing plug operation, needs first to form tubing string in underground, be at this time drilling fluid and mud entirely in tubing string, pass through
It calculates cement slurry dosage and carries out cementing plug operation；Drilling tool or oil pipe are designed into bottom depth down toward cement plug from ground, successively
It is preceding when liquid enters in tubing string from drilling tool or oil pipe every liquid, cement slurry, displacement fluid before being added in drilling tool or oil pipe, due to pipe
Be completely filled with material before the liquid before addition in column, thus it is preceding every liquid into figure tubing string when, it is preceding will to be located at pipe every liquid
It is excessive that the material of column top position squeezes out tubing string, while preceding can also be divided material original in tubing string and cement slurry every liquid
Every, avoid the pollution of cement slurry, the cement slurry of design flow be added, by displacement fluid by drilling tool or oil pipe cement slurry all push up
For in inlet pipe column, inside and outside tubing string 1 is then slightly kept to arrive the Negative Pressure Difference of 2MPa, then rises and be drilled into 30~50m of design plug face or more,
Flush cycle, Hou Ning.
During aforesaid operations, the amount that displacement fluid is added is estimated by calculating the internal volume of drilling tool or oil pipe
Judgement, pull out of hole after replacing cement slurry to drilling tool or oil pipe bottom according to the displacement fluid that calculation amount pours into certain volume, due to
The reasons such as inaccurate and measurement instrument of the occupancy volumes such as water supply pipeline, measuring tank cause measurement error in displacement process, are easy to lead
Causing displacement fluid to be added, excessive or addition is very few, and making cement plug plug face is more than to estimate position (overdisplacing) or cannot reach to estimate position
It sets and (replaces not in place), cause cementing plug to fail, be also easy to cause the engineering accidents such as bit freezing when serious.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides a kind of for the control of cementing plug operation plug face
The landing nipple of system solves the problems, such as to obtain drilling rod volume using calculation in the prior art there are errors.
To achieve the above object, the utility model uses the following technical solution: one kind being used for cementing plug operation plug
The landing nipple of face control, the landing nipple are used cooperatively with drilling rod and cementing head, and wherein cementing head is arranged in drilling rod upper end, institute
It states landing nipple to include the rubber plug being preset in cementing head and the reducer union that drilling rod lower end communicates setting with drilling rod is arranged in, institute
Stating reducer union is in cavity structure, and the releasable connection of minimum diameter position has impacting seat in the reducer union, is equipped in impacting seat
The circulation passage communicated with reducer union；
In use, the rubber plug is by moving up into impacting seat internal resistance flow blocking circulation passage under external force drives edge drilling rod axial direction and squeezing
Pressure touch wedge, rubber plug, which squeezes impacting seat, separates impacting seat with reducer union.
Further, the reducer union includes top connection portion, and the top connection portion is in lower end necking cavity structure, top connection
Portion upper end is connect with drilling rod, and top connection subordinate end is connected with fixed part, and the fixed part includes cylinder cavity structure, the bruising
Seat is connect by pin with fixed part inner wall, and the fixed part lower end is connected with channel part, and the channel part includes cylinder cavity
Structure and channel part cavity diameter are greater than fixed part cavity diameter, and the channel part lower end is additionally provided with for intercepting blocking for impacting seat
The portion of cutting, the interior interception bar for being equipped with cross structure of catching portion.
Further, the impacting seat necking cavity structure includes the placed cavity and catch chamber of cylindrical structure, and placed cavity is straight
Diameter is greater than catch chamber diameter, wherein the placed cavity is for placing rubber plug.
The utility model with principle: firstly, cementing head, drilling rod are the prior arts, drilling rod is hollow structure, cementing head
Equipped with multiple interfaces.
It is specific to use: first will it is preceding in such a way that liquid is by pumping (having flow detection table and pressure detecting table) from cementing head
Interface be sent into drilling rod in, into drilling rod in front of entered back into tubing string every liquid；Before having infused after liquid, then by cementing head
Cement slurry is sent into drilling rod by another connector enters plunger, after cement slurry has been infused, rubber plug is separated with cementing head, passes through cementing head
On another connector by displacement fluid be sent into drilling rod in pushing tow rubber plug downlink (at this time in drilling rod from top to bottom be displacement fluid, rubber plug, water
Mud), when rubber plug is moved down in the thrusting action of displacement fluid, rubber plug blocked when reaching in impacting seat drilling rod note plug operation path into
Row bruising, inner pressure inside pipe increases (obtaining by the pressure detecting table of pump) at this time, and pressure continues to increase, until impacting seat and variable diameter
Connector separation, circulatory flow reopen, and pressure is fallen after rise, and it is unimpeded to restore pipe inner flow passage；Then it pulls out of hole, Hou Ning.
Compared with the prior art, the utility model has the following beneficial effects: carrying out bruising inspection by rubber plug and impacting seat
Whether the cement slurry surveyed in drilling rod, which passes through displacement fluid, has all replaced in tubing string, is got more in the prior art by calculation
Mode it is more accurate, avoid displacement fluid be added it is excessive or very few, cause cementing plug to fail, be also easy to cause the works such as bit freezing
The problem of journey accident.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is the operation of the utility model cementing plug；
Fig. 2 is the utility model Structure explosion diagram；
Structural schematic diagram when Fig. 3 is the utility model bruising；
Fig. 4 is structural schematic diagram when the utility model circulation canal is again turned on；
Fig. 5 is the utility model rubber plug structural schematic diagram；
Fig. 6 is the utility model reducer union Structure explosion diagram；
Fig. 7 is that the utility model is catching portion structural schematic diagram.
In figure, cementing head 1, interface 11, rubber plug 12, ontology 121, annulus platform 122, rubber plug baffle 13, drilling rod 2, tubing string 3,
Geological stratification 4, reducer union 5, top connection portion 51, fixed part 52, pin 521, impacting seat 522, catch chamber 5221, placed cavity
5222, channel part 53, catching portion 54, intercept bar 541, be drilling fluid 6, displacement fluid 7, cement slurry 8, preceding every liquid 9.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in FIG. 1 to FIG. 7, it is described in the utility model it is a kind of for cementing plug operation plug face control positioning connect
Head, the landing nipple are used cooperatively with drilling rod 2 and cementing head 1, and positioning seat includes being preset in cementing head 1 and 1 activity of cementing head
The rubber plug 12 of connection and the reducer union 5 that 2 lower end of drilling rod is arranged in, the reducer union 5 are in cavity structure, the reducer union
Minimum diameter position is equipped with impacting seat 522 in 5, and impacting seat 522 is equipped with the runner channel communicated with reducer union 5.In use, institute
Rubber plug 12 is stated to move down by outer power drive into partition runner channel in impacting seat 522 and squeeze impacting seat 522, rubber plug 12 squeezes
Pressure touch wedge 522 separates impacting seat 522 with reducer union 5.Bruising, which is carried out, by rubber plug 12 and impacting seat 522 detects drilling rod 2
Whether interior cement slurry 8 has all been replaced in tubing string 3 by displacement fluid 7, is cried and is got in the prior art by calculation
Mode is more accurate, avoids displacement fluid 7 and is added excessive or very few, causes cementing plug to fail, be also easy to cause the works such as bit freezing
The problem of journey accident.
Specifically, reducer union 5 also can form access, this reality with drilling rod 2 for before rubber plug 12 enters impacting seat 522
It include top connection portion 51 with the reducer union 5 of novel setting, the top connection portion 51 is in lower end necking cavity structure, top connection portion
51 upper ends are connect with drilling rod 2, and 51 lower end of top connection portion is connected with fixed part 52, and the fixed part 52 includes cylinder cavity structure,
The impacting seat 522 is connect by pin 521 with 52 inner wall of fixed part, and 52 lower end of fixed part is connected with channel part 53, institute
Channel part 53 is stated including cylinder cavity structure and 53 cavity diameter of channel part is greater than 52 cavity diameter of fixed part, the channel part 53
Lower end is additionally provided with the catching portion 54 for intercepting impacting seat 522, and the interception bar 541 of cross structure is equipped in catching portion 54, is used
It is intercepted in by the impacting seat 522 after being separated with fixed part 52 and rubber plug 12, avoids rubber plug 12 from entering in cement slurry 8, together
When due to intercepting bar 541 be cross structure, can also make while intercepting impacting seat 522 drilling rod 2, reducer union 5 and tubing string 3 it
Between form fluid course again.
Rubber plug 12 can be intercepted effectively for convenience of impacting seat 522 simultaneously, by the rubber plug 12 entered in impacting seat 522 will not with touch
Wedge 522 separates, and the impacting seat 522 includes the placed cavity 5222 and catch chamber 5221 of cylindrical structure, and placed cavity 5222 is straight
Diameter is greater than 5221 diameter of catch chamber, wherein the placed cavity 5222 is for placing rubber plug 12.
The rubber plug 12 is placed in cementing head 1 by 12 baffle of rubber plug, and mobile 12 baffle of rubber plug, rubber plug 12 can be in weight
Power falls, the ontology 121 of the rubber plug 12 including cylindrical structure and it is multiple set annulus platform 122 along 121 circumferential surface outer ring of ontology, each
122 circumferential surface of annulus platform is inclined-plane, and 12 annulus platform of rubber plug, 122 circumferential surface is contacted with 2 inner wall of drilling rod in 12 folding process of rubber plug,
When rubber plug 12 enters 2 upper port of drilling rod, so that it may 7 pushing tow rubber plug 12 of displacement fluid is injected by 1 interface 11 of cementing head, by glue
It fills in 12 pushing tows to move down, rubber plug 12 moves down the cement slurry 8 in pushing tow drilling rod 2 and moves down.
The utility model with principle: drilling rod 2 is formed by the drilling rod that multiple head and the tail splice first, can between adjacent drill pipes
(connection type between drilling rod 2 commonly used in the art, while cementing head 1 and drilling rod 2 are connect by drilling rod pin thread with drilling rod female thread
Connection type and drilling rod 2 and the connection relationship of reducer union 5 are also those skilled in the art's common technology means, are not explained), then
Cementing head 1 is mounted in positioned at the top installation site drilling rod upper end, and reducer union 5, which is mounted in be located at, most descends installation site
Drilling rod lower end.Meanwhile cement slurry 8 being carried out note to fill operation being the normal of cementing plug in the prior art from the interface 11 of cementing head 1
Operation is advised, does not do excessive introduction.
Before carrying out cementing plug operation, needs first to form tubing string 3 under geological stratification 4, be at this time drilling fluid entirely in tubing string 3
6, cementing plug operation is carried out by calculating 8 dosage of cement slurry；Before lower drilling rod 2, it will be bored according to mounting means as shown in Figure 2
Bar 2 is connected and fixed with cementing head 1 and reducer union 5, and rubber plug 12 is fixed in cementing head 1 by 12 baffle of rubber plug at this time；Then
By drilling rod 2, bottom depth is arranged in cement plug in tubing string 3, then feeds.
First will it is preceding every liquid 9 by way of pumping (with flow detection table and pressure detecting table) from the interface of cementing head 1
11 be sent into drilling rods 2 in, into drilling rod 2 in front of entered back into tubing string 3 every liquid 9；Before having infused after liquid 9, then by cementing head 1
Another connector cement slurry 8 be sent into drilling rod 2 enter plunger, after 8 note of cement slurry is complete, rubber plug 12 is separated with cementing head 1, it is logical
Another connector on cementing head 1 is crossed by 12 downlink of pushing tow rubber plug in the feeding drilling rod 2 of displacement fluid 7 (is from top to bottom in drilling rod 2 at this time
Displacement fluid 7, rubber plug 12, cement slurry 8), when rubber plug 12 is moved down in the thrusting action of displacement fluid 7, rubber plug 12 is reached in impacting seat 522
2 note plug operation path of drilling rod has been blocked to carry out bruising when hollow structure, pressure rise (passes through the pressure detecting of pump in drilling rod 2 at this time
Table obtains), pressure continues to increase, until pin 521 is cut when pin 521 cuts pressure, impacting seat 522 comes downwards to lower section variable diameter
Impacting seat 522 is intercepted by intercepting bar 541 at 5 large diameter of connector, circulatory flow reopens, and pressure is fallen after rise, restores in pipe
Runner is unimpeded；Then it pulls out of hole, Hou Ning.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (3)
1. a kind of landing nipple for the control of cementing plug operation plug face, which makes with drilling rod and cementing head cooperation
With wherein cementing head is arranged in drilling rod upper end, it is characterised in that: the landing nipple include the rubber plug that is preset in cementing head and
The reducer union that drilling rod lower end communicates setting with drilling rod is set, and the reducer union is in cavity structure, in the reducer union
The releasable connection of minimum diameter position has impacting seat, is equipped with the circulation passage communicated with reducer union in impacting seat；
In use, the rubber plug is touched by moving up into impacting seat internal resistance flow blocking circulation passage under external force drives edge drilling rod axial direction and squeezing
Wedge, rubber plug, which squeezes impacting seat, separates impacting seat with reducer union.
2. a kind of landing nipple for the control of cementing plug operation plug face according to claim 1, it is characterised in that: institute
Stating reducer union includes top connection portion, and the top connection portion is in lower end necking cavity structure, and top connection portion upper end is connect with drilling rod,
Top connection subordinate end is connected with fixed part, and the fixed part includes cylinder cavity structure, and the impacting seat passes through pin and fixation
The connection of portion's inner wall, the fixed part lower end are connected with channel part, and the channel part includes cylinder cavity structure and channel part cavity
Diameter is greater than fixed part cavity diameter, and the channel part lower end is additionally provided with the catching portion for intercepting impacting seat, sets in catching portion
There is the interception bar of cross structure.
3. a kind of landing nipple for the control of cementing plug operation plug face according to claim 2, it is characterised in that: institute
The placed cavity and catch chamber that impacting seat necking cavity structure includes cylindrical structure are stated, and placed cavity diameter is greater than catch chamber diameter,
Wherein the placed cavity is for placing rubber plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425467.0U CN208900077U (en) | 2018-08-31 | 2018-08-31 | A kind of landing nipple for the control of cementing plug operation plug face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821425467.0U CN208900077U (en) | 2018-08-31 | 2018-08-31 | A kind of landing nipple for the control of cementing plug operation plug face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900077U true CN208900077U (en) | 2019-05-24 |
Family
ID=66571016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821425467.0U Expired - Fee Related CN208900077U (en) | 2018-08-31 | 2018-08-31 | A kind of landing nipple for the control of cementing plug operation plug face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208900077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431519A (en) * | 2021-06-30 | 2021-09-24 | 湖北鄂西新能源有限公司 | Small borehole grouting well cementation method and device |
-
2018
- 2018-08-31 CN CN201821425467.0U patent/CN208900077U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431519A (en) * | 2021-06-30 | 2021-09-24 | 湖北鄂西新能源有限公司 | Small borehole grouting well cementation method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |