CN201857900U - Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling - Google Patents
Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling Download PDFInfo
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- CN201857900U CN201857900U CN2010205669796U CN201020566979U CN201857900U CN 201857900 U CN201857900 U CN 201857900U CN 2010205669796 U CN2010205669796 U CN 2010205669796U CN 201020566979 U CN201020566979 U CN 201020566979U CN 201857900 U CN201857900 U CN 201857900U
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- mud line
- skirt
- heart
- matter
- sleeve pipe
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Abstract
The utility model relates to an anti-settling baseplate of a mud line of a water-proof guide pipe for offshore drilling, which is characterized by comprising a mud line sleeve, wherein the mud line sleeve is arranged in the middle of a base of an annular mud line disc in a through manner, an annular skirt in the same shape with the base of the mud line disc is arranged on the lower surface of the base of the mud line disc, and the lower end of the skirt is parallel with the lower end of the mud line sleeve; and the inner side wall of the skirt is connected with the outer side wall of the mud line sleeve through two groups of skirt support plates which are distributed symmetrically. The anti-settling baseplate can not only be applied in the placing operation process of the water-proof guide pipe for offshore petroleum drilling, but also be used in the operation process of settling the water-proof guide pipe by a hammering method or a drilling method.
Description
Technical field
The utility model relates to the anti-heavy substrate of a kind of mud line, particularly about a kind of anti-heavy substrate of offshore drilling riser pipe mud line that is used for the offshore oil exploration and exploitation drilling engineering.
Background technology
The Offshore Operation technical sophistication, investment is big, risk is high, carries out in the drilling operation course at the coastal waters self-elevating drilling platform, need be lowered to riser pipe usually as the support of well head and the passage of circulating fluid.Prevent the sinking of well head and riser pipe and the stability of raising well head, as important cargo handling operation in the drillng operation, need fix the depth of setting position of riser pipe, can this directly have influence on the later stage drillng operation and normally carry out safely, also is the prerequisite and the basis of follow-up drillng operation.In the past, the marine riser pipe in coastal waters all was that directly seat does not have proper device in order to prevent the sinking of riser pipe on mud line.Studies show that the stability of well head and enabling capabilities are except outside the Pass having with the ocean bottom soil condition, also the contact area size with riser pipe and seabed mud line has substantial connection, and the big more enabling capabilities that it provides of contact area is also big more.Consider the eddy current that the seabed may exist simultaneously, can produce a moment of flexure at well head, this riser pipe that just requires to be lowered to also needs enough bendings resistance, thereby finally guarantees well head stability except well head being had enough enabling capabilities.The bending resistance that improves well head at present is mainly by oral height of control well and the more high-grade material of employing.
Summary of the invention
At above problem, the purpose of this utility model provides a kind of anti-heavy substrate of offshore drilling riser pipe mud line that is used for the offshore oil exploration and exploitation drilling engineering.
For achieving the above object, the utility model is taked following technical scheme: the anti-heavy substrate of a kind of offshore drilling riser pipe mud line, it is characterized in that: it comprises a mud line sleeve pipe, described mud line sleeve pipe connects and is arranged on the try to get to the heart of a matter middle part of seat of an annular mud line, the try to get to the heart of a matter soffit of seat of described mud line is provided with an annular skirt identical with its shape and encloses, and the lower end that described skirt encloses is concordant with the lower end of described mud line sleeve pipe; The inside wall that described skirt encloses is connected with the lateral wall of described mud line sleeve pipe by two groups of skirt support plates that are symmetrically distributed.
The lateral wall of described mud line sleeve pipe and described mud line are tried to get to the heart of a matter and are symmetrically arranged with some groups between the upper surface of seat and strengthen gussets.
A described mud line upper edge of trying to get to the heart of a matter circumferentially evenly offers several pod apertures.
The utility model is owing to take above technical scheme, and it has the following advantages: can together be lowered to simple operation with the riser pipe tubing string when 1, the utility model uses.2, mud line of the present utility model is tried to get to the heart of a matter seat for circular configuration, increased the contact area of riser pipe and seabed mud line, reduced the pressure of riser pipe tubing string, thereby effectively stoped the sinking of riser pipe mud line, and the utility model maintainability is good, and cost is lower.3, the utility model is symmetrically arranged with two groups and strengthens gussets between the lateral wall of mud line sleeve pipe and mud line are tried to get to the heart of a matter the upper surface of seat, can not only effectively lift the weight of riser pipe tubing string, can also effectively improve the bending resistance of well head, and then improve the stability of well head.4, mud line of the present utility model is tried to get to the heart of a matter and is offered pod apertures on the seat, be convenient to mud line and try to get to the heart of a matter the seat seat on mud line, simultaneously the mud line seat of trying to get to the heart of a matter has a unique skirt-type structure, can reduce the soil liquefaction problem that the vibration of riser pipe brings effectively, prevent because the riser pipe tubing string sinking problem that liquefaction brings.5, the utility model not only can be applied to the offshore oil drilling riser and lays in the operation process, can also be used for that hammer is gone into method or the method that pierces is lowered to the riser pipe operation process.
Description of drawings
Fig. 1 is a perspective view of the present utility model
Fig. 2 is a plane structure schematic diagram of the present utility model
Fig. 3 is a upward view of the present utility model
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As Fig. 1～shown in Figure 3, the utility model comprises a mud line sleeve pipe 1, and mud line sleeve pipe 1 connects and is arranged on the try to get to the heart of a matter middle part of seat 2 of an annular mud line, and mud line seat 2 upper edges of trying to get to the heart of a matter circumferentially evenly offer four pod apertures 3 (only as example, being not limited to this).The lateral wall of mud line sleeve pipe 1 and mud line are tried to get to the heart of a matter and are symmetrically arranged with two groups between seat 2 the upper surface and strengthen gussets 4 (only as example, being not limited to this).Mud line seat 2 the soffit of trying to get to the heart of a matter is provided with an annular skirt identical with its shape and encloses 5, and skirt to enclose 5 lower end concordant with the lower end of mud line sleeve pipe 1.Skirt encloses 5 inside wall and is the skirt support plates 6 that 90 ° of angles distribute by four and is connected with the lateral wall of mud line sleeve pipe 1.
The utility model comprises following erection procedure in use:
1, at first processing and prefabricated mud line are prevented heavy substrate;
2, in being lowered to the riser pipe operation process, in the predetermined position that the anti-heavy substrate of mud line is installed, earlier with 1 of mud line sleeve pipe on the riser pipe of well head;
3, the program that normally is lowered to according to riser pipe is lowered to, till reaching the design depth of setting.
Range of application of the present utility model:
1, can be applied to the offshore oil drilling riser and lay operation process;
2, can be applied to hammer method into shape and be lowered to riser pipe;
3, also can be applied to pierce method and be lowered to riser pipe.
The utility model only describes with the foregoing description; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solutions of the utility model; all improvement and equivalents of individual component being carried out according to the utility model principle all should not got rid of outside protection domain of the present utility model.
Claims (3)
1. an offshore drilling riser pipe mud line is prevented heavy substrate, it is characterized in that: it comprises a mud line sleeve pipe, described mud line sleeve pipe connects and is arranged on the try to get to the heart of a matter middle part of seat of an annular mud line, the try to get to the heart of a matter soffit of seat of described mud line is provided with an annular skirt identical with its shape and encloses, and the lower end that described skirt encloses is concordant with the lower end of described mud line sleeve pipe; The inside wall that described skirt encloses is connected with the lateral wall of described mud line sleeve pipe by two groups of skirt support plates that are symmetrically distributed.
2. the anti-heavy substrate of a kind of offshore drilling riser pipe mud line as claimed in claim 1 is characterized in that: the lateral wall of described mud line sleeve pipe and described mud line are tried to get to the heart of a matter and are symmetrically arranged with some groups of reinforcement gussets between the upper surface of seat.
3. the anti-heavy substrate of a kind of offshore drilling riser pipe mud line as claimed in claim 1 or 2 is characterized in that: a described mud line upper edge of trying to get to the heart of a matter circumferentially evenly offers several pod apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669796U CN201857900U (en) | 2010-10-19 | 2010-10-19 | Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205669796U CN201857900U (en) | 2010-10-19 | 2010-10-19 | Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857900U true CN201857900U (en) | 2011-06-08 |
Family
ID=44103710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205669796U Expired - Lifetime CN201857900U (en) | 2010-10-19 | 2010-10-19 | Anti-settling baseplate of mud line of water-proof guide pipe for offshore drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857900U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842322A (en) * | 2017-10-31 | 2018-03-27 | 中海石油（中国）有限公司湛江分公司工程技术作业中心 | Heavy caliber riser pipe erection device waterborne |
-
2010
- 2010-10-19 CN CN2010205669796U patent/CN201857900U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842322A (en) * | 2017-10-31 | 2018-03-27 | 中海石油（中国）有限公司湛江分公司工程技术作业中心 | Heavy caliber riser pipe erection device waterborne |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |
|
| CX01 | Expiry of patent term |