CN201843562U - Integral-type casing head with large flow rate - Google Patents
Integral-type casing head with large flow rate Download PDFInfo
- Publication number
- CN201843562U CN201843562U CN2010205181994U CN201020518199U CN201843562U CN 201843562 U CN201843562 U CN 201843562U CN 2010205181994 U CN2010205181994 U CN 2010205181994U CN 201020518199 U CN201020518199 U CN 201020518199U CN 201843562 U CN201843562 U CN 201843562U
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- casing head
- hanger
- head body
- casing
- monolithic
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Abstract
The utility model discloses an integral-type casing head with large flow rate, which is suitable for oil drilling operation and mainly comprises a casing head main body, a first layer hanger, a second layer hanger, screw jacks, a pressure-monitoring mechanism, a large-caliber high-pressure flat-plate valve, a large-caliber circulating pipeline, a union joint and a crossover flange of the casing head, wherein the casing head main body is integral type; a plurality of steps for supporting mandrel hangers are arranged in a vertical through-hole, so as to separate the space of a casing pipe; the screw jacks are arranged outside the casing head main body; large-caliber bypasses are symmetrically arranged on two sides of the casing head main body; and internal threads of the casing pipe are formed at the bottom of the casing head main body. The integral-type casing head provided by the utility model has convenience and fastness in mounting, short time for fixing an oil well, high quality, short time for sealing seats of the hangers, and good sealing effect.
Description
Technical field
The utility model relates to and is used in a kind of petroleum drilling operation process supporting, suspension sleeve; Envelope is cut ring-like space between sleeve pipe; The casing head device of standard connection is provided for preventer.
Background technology
Casing head is an equipment indispensable in the petroleum drilling and mining process, and domestic casing head is main for imitating external product since the normal phase, yet external product is not to be fit to domestic situation.Casing head at present commonly used is that integral threaded suspension and the suspension of split type slips are main, and mainly there is following problem in it:
One, the necessary adapted screw-type hanger of monolithic casing head, carrying hanger on having only in well cementing operation makes annular space unobstructed, can cause like this and can't transfer hanger after the solid completion and put in place to produce and to seal annular space, and can't accomplish big flow at last its annular space of hanger circulation time of carrying, make circulation that difficulty take place, cementing quality can't guarantee.
Two, screw-type hanger bottom connects the two public short circuits of available internal thread adapted, and also available external screw thread is directly installed, no matter which kind of pattern all to exist material and sleeve pipe material variant with, thereby causes thread gluing reduction sealing effectiveness or causes fracture accident.
Though three, split type slips suspension can solve well cementation circulation difficulty, to lift preventer when mounted and can cause set-up time length and well head to expose, cause the uncontrollable risk of security incident and well head easily.
Above problem perplexs drillng operation for a long time.
Summary of the invention
The utility model provides the big flow casing head of a kind of monolithic to solve the well cementation difficulty; Remedy the defective of slip-type, screw-type hang; Reduced difficulty of construction; Eliminate potential safety hazard, improved operating efficiency.
For finishing foregoing, technical solution of the present utility model is:
The big flow casing head of monolithic comprises casing head body, casing head crossover flange, first floor hanger, second layer hanger, jackscrew mechanism, heavy caliber high-voltage flat plate valve, union joint, heavy caliber high pressure line critical piece.The casing head body is a monolithic, is provided with a plurality of steps in the vertical through hole and adapts to first floor hanger and second layer hanger, and first floor hanger and second layer hanger are axle formula hanger; The casing head body exterior is provided with jackscrew mechanism, and casing head body bilateral symmetry is provided with the heavy caliber bypass, and casing head body bottom is provided with the sleeve pipe internal thread.
Concrete, the heavy caliber bypass is associated with the large caliber flat plate valve, and the flap type outlet is connected with the union joint, and the union joint is associated with the heavy caliber pipeloop.
Concrete, first floor hanger and second layer hanger are provided with sealing device.
Concrete, pressure monitoring mechanism is established in casing head body side, and pressure monitoring mechanism is made up of pressure meter stop valve and pressure meter.
Principle of the present utility model is that sleeve pipe penetrates and makes the casing coupling base part seat in the hanger to hanger centre bore platform, the sleeve pipe that is installed with hanger is transferred in the casing head body by deadweight hanger seat envelope is put in place; Hanger top is provided with joint ring and hold down gag, strengthens sealing effectiveness by jackscrew mechanism, thereby realizes transferring fast hanger.
The utility model is transferred the hanger time and is had only three to five minutes, be slip-type hanger the time of transferring a thirtieth to 1/50th; Avoided because of the unusual uncontrollable risk that has an accident of the exposed down-hole pressure of well head; Hanger top is provided with anti-move left and right, the jackscrew and the block of play up and down, the risk that the risk that has prevented dismounting connection apical grafting back-off is scurried on the generation sleeve pipe when unusual with the down-hole; The utility model has reduced difficulty of construction; Eliminate potential safety hazard, improved operating efficiency.
Description of drawings
Fig. 1 is the big flow casing head of a utility model monolithic front view (sectional view);
Fig. 2 is the big flow casing head of a utility model monolithic side view;
The specific embodiment
The big flow casing head of the utility model monolithic is by casing head body 1, casing head crossover flange 18, first floor hanger 6, second layer hanger 7, jackscrew mechanism 10 (17), heavy caliber high-voltage flat plate valve 3, union joint 21, heavy caliber high pressure line 22 critical piece work in combination.Casing head body 1 is a monolithic, is provided with a plurality of steps in the vertical through hole of casing head body 1 and adapts to first floor hanger 6 and second layer hanger 7, and first floor hanger 6 is the axle formula with second layer hanger 7; Casing head body 1 outside is provided with jackscrew mechanism 10 (17), and casing head body 1 bottom is provided with the sleeve pipe internal thread.Casing head body 1 bilateral symmetry is provided with the heavy caliber bypass, and the heavy caliber bypass is associated with large caliber flat plate valve 3, and 3 outlets of large caliber flat plate valve are connected with union joint 21, and union joint 21 is associated with heavy caliber pipeloop 22.Pressure monitoring mechanism is established in casing head body 1 side, and pressure monitoring mechanism is made up of pressure meter 15 stop valves and pressure meter 16.
During work, casing head body 1 is linked by casing threads and surface pipe.Protective casing passes first floor hanger 6 and transfers, and the box cupling seat of last root sleeve pipe is encapsulated on the first floor hanger 6 mesopore step surfaces, and 6 of first floor hangers on the vertical through hole lower step, have supported the weight of protective casing in casing head body 1; First floor hanger 6 sidepieces are provided with jackscrew protective casing are fixed, first floor hanger 6 middle parts are provided with sealing mechanism, outside and casing head body 1 inner wall sealing with protective casing, and jackscrew mechanism 17 compresses first floor hanger 6 tops, strengthen sealing suburb fruit, fixed first floor hanger 6, thereby the ring-like space of surface pipe and protective casing has been opened in packing.Production string passes second layer hanger 7 and transfers, and the box cupling seat of last root sleeve pipe is encapsulated on the second layer hanger 7 mesopore step surfaces, and 7 of second layer hangers have supported the weight of production string on casing head body 1 mesopore upper step; Second layer hanger 7 sidepieces are provided with jackscrew production string are fixed, second layer hanger 7 middle parts are provided with sealing mechanism, outside and casing head body 1 inner wall sealing with production string, and jackscrew mechanism 10 compresses second layer hanger 7 tops, strengthen sealing suburb fruit, fixed second layer hanger 7, thereby the ring-like space of production string and protective casing has been opened in packing; Second layer hanger 7 tops are provided with pressing device and have limit production string upwards to jump because of accident.Heavy caliber high-voltage flat plate valve 3 connects with heavy caliber high pressure line 22 by union joint 21, and about component cloth respectively; The time open heavy caliber high-voltage flat plate valve 3 when circulating mud and well cementation and enter mud pit or vibrosieve by heavy caliber high pressure line 22, thus big and be that the systemic circulation of two group discharge capacity is rapid because of its latus rectum, shorten circulation timei and strengthened the well cementation suburb really; By the effective control well inner fluid of switch heavy caliber high-voltage flat plate valve 3.Casing head body 1 side is provided with pressure monitoring device, and it is made up of pressure meter stop valve 15 and pressure meter 16, can monitor borehole pressure effectively intuitively.After the completion casing head crossover flange 18 is loaded on the casing head body 1, connects production tree on it,, good seal performance good by flange bolt mode linking intensity are fit to high pressure, harsh weather.
Claims (4)
1. the big flow casing head of monolithic mainly comprises casing head body, first floor hanger, second layer hanger, jackscrew mechanism, pressure monitoring mechanism, heavy caliber high-voltage flat plate valve, heavy caliber pipeloop, union joint, casing head crossover flange; It is characterized in that the casing head body is a monolithic, be provided with a plurality of steps in the vertical through hole, first floor hanger and second layer hanger are axle formula hanger, the casing head body exterior is provided with jackscrew mechanism, casing head body bilateral symmetry is provided with the heavy caliber bypass, and casing head body bottom is provided with the sleeve pipe internal thread.
2. the big flow casing head of monolithic as claimed in claim 1 is characterized in that the heavy caliber bypass is associated with the large caliber flat plate valve, and the flap type outlet is connected with the union joint, and the union joint is associated with the heavy caliber pipeloop.
3. the big flow casing head of monolithic as claimed in claim 1 is characterized in that first floor hanger and second layer hanger are provided with sealing device.
4. the big flow casing head of monolithic as claimed in claim 1 is characterized in that pressure monitoring mechanism is established in casing head body side, and pressure monitoring mechanism is made up of pressure meter stop valve and pressure meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205181994U CN201843562U (en) | 2010-09-07 | 2010-09-07 | Integral-type casing head with large flow rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205181994U CN201843562U (en) | 2010-09-07 | 2010-09-07 | Integral-type casing head with large flow rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843562U true CN201843562U (en) | 2011-05-25 |
Family
ID=44038455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205181994U Expired - Fee Related CN201843562U (en) | 2010-09-07 | 2010-09-07 | Integral-type casing head with large flow rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387754A (en) * | 2022-08-26 | 2022-11-25 | 江苏腾龙石化机械有限公司 | High-pressure two-stage integral casing head |
-
2010
- 2010-09-07 CN CN2010205181994U patent/CN201843562U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115387754A (en) * | 2022-08-26 | 2022-11-25 | 江苏腾龙石化机械有限公司 | High-pressure two-stage integral casing head |
| CN115387754B (en) * | 2022-08-26 | 2023-05-05 | 江苏腾龙石化机械有限公司 | High-pressure two-stage integral casing head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Zhao Huitao Document name: Notification to Make Rectification |
|
| C14 | Grant of patent or utility model | ||
| 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: 20110525 Termination date: 20160907 |