CN208900074U - It is a kind of for controlling the auxiliary device in cementing plug face - Google Patents
It is a kind of for controlling the auxiliary device in cementing plug face Download PDFInfo
- Publication number
- CN208900074U CN208900074U CN201821629969.5U CN201821629969U CN208900074U CN 208900074 U CN208900074 U CN 208900074U CN 201821629969 U CN201821629969 U CN 201821629969U CN 208900074 U CN208900074 U CN 208900074U
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- China
- Prior art keywords
- drilling rod
- connector
- seperated
- section
- rubber plug
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Abstract
The utility model uses a kind of for controlling the auxiliary device in cementing plug face, further includes that the bruising connector of drilling rod lower end and the seperated rubber plug being preset in cementing head is arranged in including the cementing head that drilling rod and drilling rod upper end are arranged；Outer power drive fission rubber plug enters in drilling rod out of cementing head to be moved axially downwards along drilling rod to bruising connector, seperated rubber plug is clamped section by bruising connector and is intercepted, the seperated rubber plug of interception separates fission with ontology, and isolated ontology is intercepted by multiple anti-drop rods.Change the discharge pressure of slush pump by way of bruising, it can intuitively be obtained by the pressure-detecting device being arranged on slush pump, the cement slurry in drilling rod has all been replaced into tubing string to judge to enter the displacement fluid in drilling rod, more traditional mode that conveying replacement liquid measure is determined by way of calculating drilling rod volume is more accurate, facilitates engineer operation.
Description
Technical field
The utility model relates to drillng operation technical fields, and in particular to a kind of auxiliary dress for controlling cementing plug face
It sets.
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 controlling the auxiliary of cementing plug face
Device is helped, solving the result that drilling rod cavity volume uses calculation to obtain in the prior art, there is a problem with large errors.
To achieve the above object, the utility model uses the following technical solution: one kind is for controlling cementing plug face
Auxiliary device including the cementing head with multiple interfaces that drilling rod and drilling rod upper end are arranged further include setting in drilling rod lower end
Bruising connector and the seperated rubber plug that is preset in cementing head；
The fission rubber plug includes the column fission being arranged in cylindric ontology and ontology, and the ontology lower end is equipped with
Angle, the ontology have been peripherally installed with multiple spaced locating plates, the locating plate sidewall slope setting and its inclined direction
It is identical as chamfering inclined direction；
The bruising connector be in cavity structure, the cavity structure include the connection seal section for being connected to setting from top to bottom,
Supporting section, clamping section, anticreep section, the connection seal section are in inverted conical mesa-shaped, and connect seal section end diameter and be greater than brill
Bar outer diameter, the supporting section is straight, and supporting section diameter, between drilling rod internal diameter and outer diameter, the clamping section is presented greatly
Under small shrink mouth shape, and be clamped section end diameter and be less than seperated rubber plug body diameter and be greater than seperated diameter, the anticreep section is in straight tube
The anti-drop rod of multiple interconnections is equipped in shape and anticreep section；
Outer power drive fission rubber plug enters in drilling rod out of cementing head to be moved axially downwards along drilling rod to bruising connector, point
Body rubber plug is clamped section by bruising connector and is intercepted, and the seperated rubber plug of interception separates fission with ontology,
Isolated ontology is intercepted by multiple anti-drop rods.
The utilization principle of the utility model: firstly, cementing head, drilling rod, bruising connector can form fluid channel；
It is specific to use: first preceding will to pass through slush pump conveying every liquid (slush pump has flow detection table and pressure detecting table)
Mode from an interface of cementing head be sent into drilling rod in, into drilling rod in front of entered back into tubing string every liquid by bruising connector；
Before having infused after liquid, then the cement slurry for calculating volume is sent into drilling rod by another connector on cementing head and enters tubing string
It is interior；After cement slurry has been infused, the interface of cementing head is replaced again, enables to be preset in the seperated rubber plug in cementing head and enters with displacement fluid
Drilling rod is simultaneously moved downward in bruising connector, and the seperated rubber plug into bruising connector can be blocked by bruising connector clamping section
It cuts, fluid channel blocks at this time, and inner pressure inside pipe increases (obtaining by the pressure detecting table of slush pump), continues conveying and replaces
Liquid, then the pressure in drilling rod continues to increase, until the fission of seperated rubber plug is separated with ontology, isolated fission is blocked by anti-drop rod
It cuts, reopens fluid channel, pressure is fallen after rise, and it is unimpeded to restore pipe inner flow passage；Then it pulls out of hole, waits after stopping slush pump feeding
It is solidifying.
Compared with the prior art, the utility model has the following beneficial effects:
1, change the discharge pressure of slush pump, it can be by the pressure detecting that is arranged on slush pump
Device intuitively obtains, so that judging that the displacement fluid entered in drilling rod all replaces the cement slurry in drilling rod enters tubing string
Interior, more traditional mode that conveying replacement liquid measure is determined by way of calculating drilling rod volume is more accurate, facilitates engineer operation.
2, the utility model setting bruising connector can after reuse, due to seperated rubber plug be replaced by displacement fluid into
Enter in bruising connector, bruising connector and drilling rod can be separated to the seperated rubber plug of taking-up, then by bruising connector and bore after trip-out
Bar assembling carries out next cementing plug operation, has the effect of economical and energy saving.
3, the bruising connector of the utility model setting does not have to carry out structure change, processes more while may be reused
It is convenient.
4, the fission of the seperated rubber plug of the utility model setting its active area when carrying out stress is small, and pressure is big, needs
Slightly increasing drilling rod pressure can be such that fission separates with ontology, and the pushing tow liquid being added in drilling rod is avoided excessively to increase to cement slurry
Replace error.
5, the anti-drop rod of the utility model setting can intercept isolated fission, avoid seperated enter in tubing string to pipe
Cement slurry intermittent pollution in column.
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 cementing head and drilling rod fit structure simplified schematic diagram；
Fig. 3 is the utility model bruising connector and drilling rod fit structure simplified schematic diagram；
Fig. 4 is the structure schematic diagram under another state of Fig. 3；
Fig. 5 is line A-A cross-sectional view in Fig. 3；
Fig. 6 is the utility model bruising joint structure simplified schematic diagram；
Fig. 7 is the utility model fission rubber plug structure schematic diagram.
In figure, cementing head 1, interface 11, catching sheet 12, cover board 13, connector 14, geological stratification 2, drilling rod 3, bruising connector 4,
Connect seal section 41, supporting section 42, clamping section 43, anticreep section 44, anti-drop rod 441, seperated rubber plug 5, ontology 51, locating plate 511,
It is chamfering 512, fission 52, pin 53, displacement fluid 6, tubing string 7, drilling fluid 8, preceding every liquid 9, cement slurry 10.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
It is described in the utility model a kind of for controlling the auxiliary device in cementing plug face as shown in FIG. 1 to FIG. 7, including
Drilling rod 3 and the cementing head 1 with multiple interfaces 11 of 3 upper end of drilling rod setting, further include the bruising connector that 3 lower end of drilling rod is arranged in
4 with the seperated rubber plug 5 that is preset in cementing head 1；3 sections of drilling rod/section that wherein drilling rod 3 is spliced by multiple head and the tail is formed, adjacent brill
Connection can be detained between 3 sections of bar/section by drilling rod 3, and (button of drilling rod 3 is common between this field connection two 3 sections of adjacent drill pipes/section
Technological means), then cementing head 1 is mounted in the upper end between the top 3 sections of installation site drilling rod/section, and bruising connector 4 is
It is mounted on and most descends lower end between 3 sections of drilling rod/section of installation site.
Since seperated rubber plug 5 needs to be preset in cementing head 1, for convenience of the installation of seperated rubber plug 5, the utility model setting
Relatively existing 1 structure of cementing head of cementing head 1 improve to some extent, specifically, the cementing head 1 include connector 14 and and connector
The 14 multiple interfaces 11 communicated, connector 14 are in cavity structure, and connector 14 is vertically arranged when use, and 14 upper end of connector is equipped with
The cover board 13 of removable setting, 14 lower end of connector are communicated with drill bit, and for convenience of the installation of seperated rubber plug 5, the utility model is in institute
It states 14 inner wall of connector and is equipped with the cyclic annular catching sheet 12 for being used to support seperated rubber plug 5, and be located on catching sheet 12 in connector 14
Fang Yuyi interface 11 communicates.12 internal diameter of catching sheet is less than 5 locating plate of seperated rubber plug, 511 maximum outside diameter, as shown in Fig. 2, before perfusion
When liquid 9 and cement slurry 10, it can be imported by the interface 11 of 12 lower section of catching sheet in Fig. 2, when displacement fluid 6 is added, from Fig. 2
The interface 11 of middle uppermost position imports displacement fluid 6, since 12 internal diameter of catching sheet is slightly less than seperated 5 locating plate of rubber plug, 511 maximum
Outer diameter, displacement fluid 6 will squeeze seperated rubber plug 5 when being full of 12 upper space of catching sheet, a setting occurs for rubber plug locating plate 511
Become, enable to move up into drilling rod 3 under seperated rubber plug 5, while for convenience of the installation of seperated rubber plug 5, connector 14 and cover board 13 can
The releasable connection in a manner of through flanged joint.
As shown in fig. 7, cementing head 1, drilling rod 3, bruising connector 4 are formed fluid channel and are blocked up for convenience of seperated rubber plug 5
The seperated rubber plug 5 of plug and conducting, the utility model setting is seperated including the column being arranged in cylindric ontology 51 and ontology 51
52, described seperated 52 are connect with ontology 51 by more pins 53, while guaranteeing that fission 52 is effectively connect with ontology 51,
It can be separated in the case where pressurization.For convenience of sliding of the seperated rubber plug 5 in drilling rod 3, avoid making due to 3 inner wall out-of-flatness of drilling rod
Seperated rubber plug 5 shifts or just stuck in drilling rod 3 by the foreign matter in drilling rod 3 not entering into bruising connector 4 in drilling rod 3
Interior, 51 one end of the ontology of the utility model setting is equipped with chamfering 512, and the ontology 51 has been peripherally installed with multiple interval settings
Locating plate 511,511 sidewall slope of locating plate setting and 511 sidewall slope direction of locating plate and 512 inclined direction of chamfering
It is identical；511 outer diameter of locating plate is arranged to be slightly less than 3 internal diameter of drilling rod, not will do it offset, energy in guaranteeing rubber plug folding process
State as shown in figure 1 enters in bruising connector 4, at the same be also avoided that seperated rubber plug 5 along drilling rod 3 glide during encounter drilling rod
The foreign matter of 3 inner walls can be directly blocked in drilling rod 3, because deformation occurs can cross 3 inner wall foreign matter of drilling rod by locating plate 511
It is moved up under position is smooth in impacting seat connector.
As shown in fig. 6, the bruising connector 4 is in cavity structure, the cavity structure includes connection setting from top to bottom
Seal section 41, supporting section 42, clamping section 43, anticreep section 44 are connected, the connection seal section 41 is in inverted conical mesa-shaped, and is connected
41 end diameter of seal section is greater than 3 outer diameter of drilling rod, and the supporting section 42 is straight, and 42 diameter of supporting section is located in drilling rod 3
Between diameter and outer diameter, the clamping section 43 is in up big and down small shrink mouth shape, and is clamped 43 end diameter of section and is less than seperated rubber plug 5
51 diameter of body is greater than seperated 52 diameters, the anticreep section 44 is straight and anticreep section 44 in be equipped with the anticreeps of multiple interconnections
Bar 441；Outer power drive fission rubber plug 5 enters in drilling rod 3 out of cementing head 1 to be moved axially downwards along drilling rod 3 to bruising connector 4
Interior, seperated rubber plug 5 is clamped section 43 by bruising connector 4 and is intercepted, and the seperated rubber plug 5 of interception makes fission 52 under outer power drive
It is separated with ontology 51, isolated ontology 51 is intercepted by multiple anti-drop rods 441.The connection seal section 41 of the setting of bruising connector 4, branch
Support section 42 can effectively be fixed drilling rod 3, at the same can be greater than by connection seal section 41 3 outer radial position of drilling rod to drilling rod 3 and
Bruising connector 4 is effectively sealed；The clamping section 43 that bruising connector 4 is arranged can effectively intercept seperated rubber plug 5, facilitate this
Body 51 with seperated 52 separation；The more anti-drop rods 441 that the anticreep section 44 that bruising connector 4 is arranged is arranged can be by the fission 52 of separation
It is effectively intercepted, fission 52 is avoided to enter in cement slurry 10, since seperated 52 diameters differ more with 44 diameter of anticreep section, be
So that anti-drop rod 441 is effectively intercepted fission 52, more anti-drop rods 441 are arranged to " rice " shape as shown in the figure.
It is ° by connection 41 tilt angle of seal section simultaneously for effective sealing of the connection seal section 41 to drilling rod 3 is effectively ensured
~°, to enable effectively to read while will not be added excessive displacement fluid 6 in transformation in drilling rod 3, section 43, chamfering will be clamped
512 tilt angles are °~°, and clamping section 43,512 tilt angle of chamfering is excessive or too small prevents pressure from seperated rubber plug 5
It is effectively converged, it is desirable to separate fission 52 with ontology 51,6 amount of displacement fluid of pressurization is opposite will be excessive, same to influence note
The result of cement plug operation.
Specific practical principle: it before carrying out cementing plug operation, needs first to form tubing string 7 under geological stratification 2, at this time tubing string
It is drilling fluid 8 entirely in 7, carries out cementing plug operation by calculating 10 dosage of cement slurry；Before lower drilling rod 3, according to as shown in the figure
Mounting means drilling rod 3 and cementing head 1 and bruising connector 4 are connected and fixed, seperated rubber plug 5 is preset in cementing head 1 at this time；So
By drilling rod 3, bottom depth, then cementing plug operation is arranged in cement plug in tubing string 7 afterwards.
First will it is preceding every liquid 9 by way of slush pump conveying (slush pump has flow detection table and pressure detecting table) from water
The interface 11 of mud head 1 is sent into drilling rod 3, into drilling rod 3 in front of entered back into tubing string 7 every liquid 9 by bruising connector 4；It has infused
It is preceding that the cement slurry 10 for calculating volume is sent into drilling rod 3 into tubing string 7 after liquid 9, then through another connector on cementing head 1
It is interior；After 10 note of cement slurry is complete, the interface 11 of cementing head 1 is replaced again, enables the seperated rubber plug 5 being preset in cementing head 1 with top
Enter drilling rod 3 for liquid 6 and be moved downward in bruising connector 4, the seperated rubber plug 5 into bruising connector 4 can pass through bruising connector 4
Clamping section 43 is intercepted, and fluid channel blocks at this time, and pressure rise (passes through the pressure detecting table of slush pump in drilling rod 3 at this time
Obtain), continue to convey displacement fluid 6, then the pressure in drilling rod 3 continues to increase, until the fission 52 of seperated rubber plug 5 divides with ontology 51
From the fission 52 of separation is intercepted by anti-drop rod 441, reopens fluid channel, and pressure is fallen after rise, and it is smooth to restore pipe inner flow passage
It is logical；Then it pulls out of hole after stopping slush pump feeding, 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 (4)
1. a kind of for controlling the auxiliary device in cementing plug face, including drilling rod and drilling rod upper end be arranged with multiple interfaces
Cementing head, it is characterised in that: further include that the bruising connector of drilling rod lower end and the seperated rubber plug being preset in cementing head are set；
The fission rubber plug includes the column fission being arranged in cylindric ontology and ontology, and the ontology lower end is equipped with chamfering,
The ontology has been peripherally installed with multiple spaced locating plates, the locating plate sidewall slope setting and its inclined direction and has fallen
Angle lapping tilted direction is identical；
The bruising connector is in cavity structure, and the cavity structure includes the connection seal section for being connected to setting from top to bottom, support
Section, clamping section, anticreep section, the connection seal section are in inverted conical mesa-shaped, and connect seal section end diameter and be greater than outside drilling rod
Diameter, the supporting section is straight, and supporting section diameter, between drilling rod internal diameter and outer diameter, the clamping section is in up big and down small
Shrink mouth shape, and be clamped section end diameter and be less than seperated rubber plug body diameter and be greater than seperated diameter, the anticreep section it is straight and
The anti-drop rod of multiple interconnections is equipped in anticreep section；
Outer power drive fission rubber plug enters in drilling rod out of cementing head to be moved axially downwards along drilling rod to bruising connector, seperated glue
Plug is clamped section by bruising connector and is intercepted, and the seperated rubber plug of interception separates fission with ontology, separates
Ontology intercepted by multiple anti-drop rods.
2. according to claim 1 a kind of for controlling the auxiliary device in cementing plug face, it is characterised in that: the cement
Head includes the connector of cavity structure, and the connector is communicated with multiple interfaces, and the connector upper end is equipped with removable setting
Cover board, connector lower end are communicated with drill bit, and the connector inner wall is equipped with the cyclic annular catching sheet for being used to support seperated rubber plug, and even
It is located above catching sheet in connector and is communicated with an interface.
3. according to claim 2 a kind of for controlling the auxiliary device in cementing plug face, it is characterised in that: the fission
It is connect with ontology by more pins.
4. according to claim 3 a kind of for controlling the auxiliary device in cementing plug face, it is characterised in that: the connection
Seal section tilt angle is 75 °~80 °, and the clamping section, chamfering tilt angle are 45 °~50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821629969.5U CN208900074U (en) | 2018-09-30 | 2018-09-30 | It is a kind of for controlling the auxiliary device in cementing plug face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821629969.5U CN208900074U (en) | 2018-09-30 | 2018-09-30 | It is a kind of for controlling the auxiliary device in cementing plug face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900074U true CN208900074U (en) | 2019-05-24 |
Family
ID=66574909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821629969.5U Expired - Fee Related CN208900074U (en) | 2018-09-30 | 2018-09-30 | It is a kind of for controlling the auxiliary device in cementing plug face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208900074U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924927A (en) * | 2019-11-15 | 2020-03-27 | 长江大学 | Method, device and equipment for downlink real-time positioning of well cementation rubber plug and storage medium |
| CN112814612A (en) * | 2019-11-18 | 2021-05-18 | 中国石油天然气股份有限公司 | Sealing layer plugging method for oil well |
| CN115217441A (en) * | 2022-07-27 | 2022-10-21 | 中海石油(中国)有限公司湛江分公司 | Ball-throwing device for cement injection plug and cement injection plug process thereof |
-
2018
- 2018-09-30 CN CN201821629969.5U patent/CN208900074U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924927A (en) * | 2019-11-15 | 2020-03-27 | 长江大学 | Method, device and equipment for downlink real-time positioning of well cementation rubber plug and storage medium |
| CN110924927B (en) * | 2019-11-15 | 2023-06-27 | 长江大学 | Method, device, equipment and storage medium for positioning well cementation rubber plug downwards in real time |
| CN112814612A (en) * | 2019-11-18 | 2021-05-18 | 中国石油天然气股份有限公司 | Sealing layer plugging method for oil well |
| CN115217441A (en) * | 2022-07-27 | 2022-10-21 | 中海石油(中国)有限公司湛江分公司 | Ball-throwing device for cement injection plug and cement injection plug process thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190524 |