CN208502727U - Self-priming Pressure Block - Google Patents
Self-priming Pressure Block Download PDFInfo
- Publication number
- CN208502727U CN208502727U CN201820840274.5U CN201820840274U CN208502727U CN 208502727 U CN208502727 U CN 208502727U CN 201820840274 U CN201820840274 U CN 201820840274U CN 208502727 U CN208502727 U CN 208502727U
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- top connection
- plug
- self
- rubber plug
- spacer
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Abstract
The utility model relates to a kind of self-priming Pressure Blocks.Mainly solve the problems, such as that existing brill plug twin-stage note inner sleeve rubber plug of exempting from cannot smoothly disengage tool whereabouts shaft bottom.It is characterized by: the top connection (1) connect ontology (2) with external screw-thread between lower contact (5), top connection (1) the lower end internal whorl connects spacer (3), and spacer (3) lower end external screw-thread connects lower contact (5)；There are sealing cavity (8) between ontology (2) and spacer (3)；Top connection (1) is by cutting off (6) connection rubber plug seat (4), the inlet opening (7) being arranged in top connection (1).The self-priming Pressure Block, it can be ensured that inner sleeve rubber plug Bottom Runby becomes larger, and raising exempts to bore plug twin-stage note inner sleeve rubber plug whereabouts shaft bottom success rate.
Description
Technical field
The utility model relates to petroleum drilling technology field, in particular to a kind of self-priming Pressure Block.
Background technique
In oil field development, in the well cementing operation of the Holes of Complicated Wells such as Absorption Wells of Low Pressure and long cementing interval well, to prevent to leak
Mistake mostly uses double-stage pouring cement tool to carry out cementing job, reduces the annular space head of liquid generated during cementing job,
To avoid that leakage accident occurs in cementing operation.But after conventional two stage cementing operation, it need to be bored with small drilling tool and remove rubber plug,
It had not only caused cementing quality to decline in this way but also had increased operating cost.For this purpose, exempting to bore plug using a kind of in drillng operation at present
Double-stage pouring cement tool, the attachmentes such as rubber plug fall well automatically after the completion of realization operation, exempt to bore plug, raising cementing quality after realizing well cementation
Save drilling cost.Exempt to bore in the application of plug double-stage pouring cement tool at the scene, effect is less desirable.The reason is that in tool
Set rubber plug needs downlink certain distance when falling off, and self weight downlink could be leaned on by leaving tool body.If Bottom Runby not enough if shadow
Ring the success rate that falls off.
Summary of the invention
Technical problem to be solved in the utility model is to overcome existing present in background technique exempt from brill plug twin-stage note
The problem of set rubber plug cannot smoothly disengage tool whereabouts shaft bottom, and a kind of self-priming Pressure Block is provided, the self-priming Pressure Block, energy
Enough ensure that inner sleeve rubber plug Bottom Runby becomes larger, raising exempts to bore plug twin-stage note inner sleeve rubber plug whereabouts shaft bottom success rate.
The invention for solving the technical problem can reach by following technical solution: the self-priming Pressure Block, including above connect
Head, ontology, lower contact, external screw-thread connects ontology between the top connection and lower contact, and top connection lower end internal whorl connects
Spacer is connect, spacer lower end external screw-thread connects lower contact；There is sealing cavity between ontology and spacer；Top connection is by cutting off connection glue
Obturating plug, the inlet opening being arranged in top connection.
The utility model can have the following beneficial effects: the self-priming Pressure Block compared with above-mentioned background technique, can
It helps the inner sleeve rubber plug for exempting to bore plug double-stage pouring cement tool smoothly to fall shaft bottom, improves the success for exempting to bore plug double-stage pouring cement tool
Rate.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model；
Attached drawing 2 is the structural schematic diagram of the utility model bottom plug；
Attached drawing 3 is bottom plug bruising schematic diagram after the well cementation of the utility model level-one；
Attached drawing 4 is self-priming Pressure Block opening schematic diagram after the well cementation of the utility model second level.
In figure: 1. top connections；2. ontology；3. spacer；4. rubber plug seat；5. lower contact；6. cutting off；7. inlet opening；8. cavity；
9. bottom plug leather cup；10 bottom plug bars.
Specific embodiment:
The utility model is described in further detail with reference to the accompanying drawing:
As shown in attached drawing 1, Fig. 2, the self-priming Pressure Block, including top connection 1, ontology 2, lower contact 5；The top connection 1
Ontology 2 is connect with 5 external screw-threads of lower contact；The 1 lower end internal whorl of top connection connects spacer 3, spiral shell outside 3 lower end of spacer
Line connects lower contact 5；There is sealing cavity 8 between ontology 2 and spacer 3；Top connection 1 is by cutting off 6 connection rubber plug seats 4, in top connection 1
Inlet opening 7 is set, and the inlet opening 7 in top connection is sealed by rubber plug seat 4；As shown in Fig. 2, bottom plug on bottom plug bar 10 by vulcanizing
Bottom plug leather cup 9 is constituted.
The self-priming Pressure Block working principle: self-priming Pressure Block main body assembly is connected to casing float collar top.When
Bottom plug falls into 4 bruising of rubber plug seat when level-one is cemented the well, and realizes level-one well cementation, as shown in Figure 3.As shown in figure 4, when the second level is cemented the well
Terminate, exempts to bore one confined space full of drilling fluid of formation between plug double-stage pouring cement tool inner sleeve rubber plug and bottom plug, after
Of continuing rising to be depressed into 20MPa, bottom plug pushes rubber plug seat 4 to cut off 6 downlinks exposing inlet opening 7, and drilling fluid largely enters cavity 8,
Exempt to bore the drilling fluid for filling in double-stage pouring cement tool inner sleeve rubber plug top and will push at this time to exempt to bore plug double-stage pouring cement tool inner sleeve glue
Plug continues traveling downwardly, and the cavity 8 of self-priming Pressure Block can generate certain suction, and inner sleeve rubber plug is forced to hurtle down a spacing
From, and then the inner sleeve rubber plug for exempting to bore double-stage pouring cement tool is helped smoothly to fall to shaft bottom, raising exempts to bore plug two-stage water injection bricklayer's
The success rate of tool.
Claims (2)
1. a kind of self-priming Pressure Block, including top connection (1), ontology (2), lower contact (5), it is characterised in that: the top connection
(1) external screw-thread is connect ontology (2) between lower contact (5), and top connection (1) the lower end internal whorl connects spacer (3), spacer
(3) lower end external screw-thread connection lower contact (5)；There are sealing cavity (8) between ontology (2) and spacer (3)；Top connection (1) is by cutting
Sell (6) connection rubber plug seat (4), the inlet opening (7) being arranged in top connection (1).
2. self-priming Pressure Block according to claim 1, it is characterised in that: the inlet opening (7) in the top connection is by glue
Obturating plug (4) sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840274.5U CN208502727U (en) | 2018-05-31 | 2018-05-31 | Self-priming Pressure Block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840274.5U CN208502727U (en) | 2018-05-31 | 2018-05-31 | Self-priming Pressure Block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502727U true CN208502727U (en) | 2019-02-15 |
Family
ID=65287944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820840274.5U Active CN208502727U (en) | 2018-05-31 | 2018-05-31 | Self-priming Pressure Block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208502727U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878680A (en) * | 2019-10-28 | 2020-03-13 | 大庆石油管理局有限公司 | Casing pipe lowering pressure-building one-way valve |
-
2018
- 2018-05-31 CN CN201820840274.5U patent/CN208502727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878680A (en) * | 2019-10-28 | 2020-03-13 | 大庆石油管理局有限公司 | Casing pipe lowering pressure-building one-way valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |