CN202718632U - Reducing sleeve connector - Google Patents
Reducing sleeve connector Download PDFInfo
- Publication number
- CN202718632U CN202718632U CN 201220435500 CN201220435500U CN202718632U CN 202718632 U CN202718632 U CN 202718632U CN 201220435500 CN201220435500 CN 201220435500 CN 201220435500 U CN201220435500 U CN 201220435500U CN 202718632 U CN202718632 U CN 202718632U
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- casing tube
- reducing casing
- utility
- small size
- 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 discloses a reducing sleeve connector which comprises a large size sleeve (1) and a small size sleeve (3). The large size sleeve (1) and the small size sleeve (3) are connected through a reducing sleeve (2). The reducing sleeve connector has the advantages of being simple in structure, low in investment cost, easy and convenient to operate, and capable of effectively improving operating efficiency and being widely used in offshore oil and gas fields.
Description
Technical field
The utility model belongs to the technical field of drilling tool, specifically refers to a kind of reducing casing tube connector.
Background technology
The marine drilling expense is unusually expensive, and in order to reduce the drilling cost of great number, the ocean operation person is seeking various ways always and improving the operation timeliness.
The traditional drilling model in Ya Cheng operation area, THE WESTERN SOUTH CHINA SEA oil field is that diameter of subdrilling is the 762mm big hole, then descends the conduit of 660mm and connects the surface pipe head, the well cementing operation of then carrying out out; Open after operation finishes one, the operator bores the well of a Φ 609.6mm again in original well, then descend the surface pipe of Φ 473.1mm, and connect two casing heads of opening, and carries out two again and opens well cementing operation.
This work pattern can improve the stability of well head, but the activity duration is very long, is unfavorable for the saving of cost.
Above-mentioned discussion content purpose is to introduce to the reader various aspects of technology that may be relevant with the various aspects of the present utility model that below will be described and/or advocate, believe that this discussion content helps to provide background information for the reader, to be conducive to understanding better various aspects of the present utility model, therefore, should be appreciated that it is to read these discussions with this angle, rather than admit prior art.
The utility model content
The purpose of this utility model is to avoid deficiency of the prior art and a kind of reducing casing tube connector is provided, to solve the problem that the marine top layer drillng operation time is long, consumable quantity is large.
The purpose of this utility model is achieved through the following technical solutions:
A kind of reducing casing tube connector is provided, comprises large scale sleeve pipe and small size sleeve pipe, connect by reducing casing tube between described large scale sleeve pipe and the described small size sleeve pipe.
Wherein, the external diameter of described large scale sleeve pipe is 660.4mm, and length is 1.2m, and wall thickness is 25.4mm.
Wherein, the external diameter of described small size sleeve pipe is 473.1mm, and length is 1m, and wall thickness is 25.4mm.
Wherein, the slope angle of described reducing casing tube is 15 °, and vertical length is that 0.3305mm, wall thickness are 25.4mm.
Wherein, between described large scale sleeve pipe and the described reducing casing tube, between described reducing casing tube and the described small size sleeve pipe all by being welded to connect.
The beneficial effects of the utility model:
1) simple in structure, cost of investment is low.
2) the operation timeliness is improved.
3) simple to operation, oil gas field extensive use at sea.
Description of drawings
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in the accompanying drawing does not consist of any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of reducing casing tube connector.
In Fig. 1, include: 1---large scale sleeve pipe, 2---reducing casing tube, 3---small size sleeve pipe.
The specific embodiment
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments the utility model is described in further detail, need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
Core of the present utility model is to provide a kind of reducing casing tube connector, to improve the operation timeliness, solves the problem that the marine top layer drillng operation time is long, consumable quantity is large.
As shown in Figure 1, described in the utility modelly provide a kind of reducing casing tube connector, comprise large scale sleeve pipe 1 and small size sleeve pipe 3, connect by reducing casing tube 2 between described large scale sleeve pipe 1 and the described small size sleeve pipe 3.Between described large scale sleeve pipe 1 and the described reducing casing tube 2, between described reducing casing tube 2 and the described small size sleeve pipe 3 all by being welded to connect.Wherein, the external diameter Φ 1 of described large scale sleeve pipe 1 is 660.4mm, and length L 1 is 1.2m, and wall thickness is 25.4mm; The external diameter Φ 2 of described small size sleeve pipe 3 is 473.1mm, and length L 3 is 1m, and wall thickness is 25.4mm; The slope angle a of described reducing casing tube 2 is 15 °, and vertical length L2 is that 0.3305mm, wall thickness are 25.4mm.
The utility model does not need to creep into mode with traditional secondary, but directly uses first well of bit drills of Φ 609.6mm, but front 20 meters discharge capacities want enough large, and a very large size will appear in the top well near the seabed like this.After the trip-out, can make up a Φ 473.1mm sleeve pipe+Φ 473.1mm﹠amp; Then the bunch tube of 660mm reducing casing tube+660mm sleeve pipe is lowered to sleeve pipe, so only with once creeping into and a setting of casing, just can reach the purpose of traditional secondary drilling well.
The utility model specifically uses step as follows:
1. make up the drilling tool structure of a Φ 609.6mm, and under be drilled into the mud face;
2. begin to creep into, the waterpower about front 20m is larger a little, and well is enlarged;
3. after having bored about 20 meters, progressively dwindle waterpower, and continue to creep into downwards;
4. creep into to casing point, pull out of hole;
5. make up a Φ 473.1mm sleeve pipe+Φ 473.1mm﹠amp; The clad pipe string of the reducing casing tube of 660mm+660mm sleeve pipe, but will note combination should make reducing casing tube be in following 20 meters of the mud face;
6. descend the clad pipe string, carry out the operation of lower step.
Set forth a lot of details so that fully understand the utility model in the top description, still, the utility model can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model has exemplified above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various variations and remodeling; unless such variation and remodeling have departed from scope of the present utility model, otherwise all should be included in the protection domain of the present utility model.
Claims (5)
1. a reducing casing tube connector is characterized in that: comprise large scale sleeve pipe (1) and small size sleeve pipe (3), connect by reducing casing tube (2) between described large scale sleeve pipe (1) and the described small size sleeve pipe (3).
2. reducing casing tube connector according to claim 1, it is characterized in that: the external diameter of described large scale sleeve pipe (1) is 660.4mm, and length is 1.2m, and wall thickness is 25.4mm.
3. reducing casing tube connector according to claim 2, it is characterized in that: the external diameter of described small size sleeve pipe (3) is 473.1mm, and length is 1m, and wall thickness is 25.4mm.
4. reducing casing tube connector according to claim 3, it is characterized in that: the slope angle of described reducing casing tube (2) is 15 °, vertical length is that 0.3305mm, wall thickness are 25.4mm.
5. each described reducing casing tube connector in 4 according to claim 1 is characterized in that: between described large scale sleeve pipe (1) and the described reducing casing tube (2), between described reducing casing tube (2) and the described small size sleeve pipe (3) all by being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435500 CN202718632U (en) | 2012-08-30 | 2012-08-30 | Reducing sleeve connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220435500 CN202718632U (en) | 2012-08-30 | 2012-08-30 | Reducing sleeve connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718632U true CN202718632U (en) | 2013-02-06 |
Family
ID=47620458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220435500 Expired - Fee Related CN202718632U (en) | 2012-08-30 | 2012-08-30 | Reducing sleeve connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718632U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442834A (en) * | 2016-01-08 | 2016-03-30 | 平煤神马建工集团有限公司 | Combined connecting pipe and connecting method thereof |
| CN106761467A (en) * | 2017-03-15 | 2017-05-31 | 中国海洋石油总公司 | A kind of integrated joint and the deep water cementing method implemented using the integrated joint |
| CN111576404A (en) * | 2020-06-09 | 2020-08-25 | 大连利旋电力工程技术有限公司 | Nodular cast iron screw pile |
-
2012
- 2012-08-30 CN CN 201220435500 patent/CN202718632U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105442834A (en) * | 2016-01-08 | 2016-03-30 | 平煤神马建工集团有限公司 | Combined connecting pipe and connecting method thereof |
| CN106761467A (en) * | 2017-03-15 | 2017-05-31 | 中国海洋石油总公司 | A kind of integrated joint and the deep water cementing method implemented using the integrated joint |
| CN106761467B (en) * | 2017-03-15 | 2018-12-25 | 中国海洋石油集团有限公司 | A kind of integration connector and the deep water cementing method using integration connector implementation |
| CN111576404A (en) * | 2020-06-09 | 2020-08-25 | 大连利旋电力工程技术有限公司 | Nodular cast iron screw pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |