CN212583653U - Special circulating valve for wellhead and drilling equipment adopting same - Google Patents
Special circulating valve for wellhead and drilling equipment adopting same Download PDFInfo
- Publication number
- CN212583653U CN212583653U CN202022004871.4U CN202022004871U CN212583653U CN 212583653 U CN212583653 U CN 212583653U CN 202022004871 U CN202022004871 U CN 202022004871U CN 212583653 U CN212583653 U CN 212583653U
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- wellhead
- hole
- main body
- 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.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
A circulating valve special for a wellhead, drilling equipment adopting the circulating valve and a drilling method. The special circulating valve for the wellhead comprises a main body shell, wherein an upper joint and a lower joint are arranged on the main body shell; a cavity is formed in the main body shell, and a valve and a piston cavity are arranged in the cavity; wherein, a piston is arranged in the piston cavity and can move between a first position and a second position; two through holes are arranged on the side wall of the main body shell, wherein a closed space is formed between one through hole and the piston, and when driving liquid is input from the through hole, the piston can be pushed to move from the second position to the first position; wherein the piston wall is also provided with a through hole which, when the piston is in the first position, is in partial or complete communication with another through hole in the side wall of the main body housing, so that the input drilling fluid can flow through the inner cavity to the lower connector. The utility model discloses a special circulating valve of well head is convenient for change drilling rod and drill collar, need not interrupt the mud circulation, can also drive when breaking down or the accident on the top, carries out incessant circulation kill job.
Description
Technical Field
The utility model relates to an oil drilling and exploitation equipment field, concretely relates to special circulating valve of well head especially is convenient for change drilling rod and drill collar at the oil drilling in-process, uninterrupted mud endless well head special circulating valve and adopt its drilling equipment.
Background
In the oil drilling process, the formation pressure changes greatly, and some horizon pressures are high, and some horizon pressures are low, only through adjusting mud proportion, establish the circulation and come balanced formation pressure, avoid blowout and lost circulation.
In the drilling process, blowout and lost circulation are easy to cause major accidents, and only when the mud is continuously circulated, a stable well wall is formed in a shaft, so that the pressure of the shaft and the formation is balanced, and the major accidents cannot occur in the drilling process. When the stratum pressure is unstable in the drilling process of the existing drilling equipment, the actions of replacing a drill rod and a drill column are very quick, the time of not circulating mud is shortened, the stability of the wall of a well in a shaft is improved, and the major accidents of blowout, well leakage and the like can be avoided or slowed down, so that the high requirements are provided for operators, the burden of the operators is relieved, and the technical problem which needs to be solved urgently at present is to improve and enhance the operation stability and the safety.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a circulation valve dedicated for wellhead, a drilling device using the circulation valve, and a drilling method, so as to at least partially solve at least one of the above technical problems.
In order to achieve the above object, as an aspect of the present invention, there is provided a circulation valve dedicated for a wellhead, comprising a main body casing, wherein:
the main body shell is provided with an upper joint and a lower joint;
a cavity communicated up and down is formed in the main body shell, and a valve and a piston cavity for controlling the cavity to be communicated up and down are arranged in the cavity; the piston cavity is internally provided with a piston with a communication channel in the middle, the piston can move between a first position and a second position in the piston cavity, and a first reset mechanism is arranged between the piston and the main body shell;
the side wall of the main body shell is provided with two through holes, wherein a closed space is formed between the interior of the first through hole and the piston, and when driving liquid is input from the first through hole, the piston can be pushed to move from the second position, where the first resetting mechanism is unfolded, to the first position, where the first resetting mechanism is stressed, in the piston cavity; the second through hole is used for inputting drilling fluid;
and when the piston moves to the first position, the third through hole is partially or completely communicated with the second through hole, so that the drilling fluid input by the second through hole can flow to the lower connector through the inner cavity of the main body shell.
As still another aspect of the present invention, there is provided a drilling apparatus using the circulation valve for wellhead as described above.
Based on the technical scheme, the utility model discloses a well head dedicated cycle valve, adopt its drilling equipment and drilling method have one of following beneficial effect at least for prior art:
1. the drill rod and the drill collar are convenient to replace, and mud circulation does not need to be interrupted;
2. the tool can be applied to the drilling process and the drilling construction process of uninterrupted circulating mud, and can be used for carrying out uninterrupted circulating well killing operation when the top drive fails or has an accident.
Drawings
FIG. 1 is a longitudinal sectional view of the assembly of the circulation valve for wellhead of the present invention;
FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 3 is a schematic longitudinal section of the position of the components of the wellhead specific circulation valve in the drilling mode;
fig. 4 is a longitudinal section view illustrating the positions of the components of the side circulation mode of the wellhead specific circulation valve of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. Because the utility model discloses the position that the product was put can change at will, the utility model discloses in position words such as "upper", "lower", "left", "right", only show relative position relation, and do not be used for injecing absolute position relation. In the following description, for convenience of description, as shown in fig. 1, 3 and 4 of the present invention, the circulation valve special for well head of the present invention will adopt the illustrated mode of vertical placement, the upper joint is located at the upper end, and the lower joint is located at the lower end.
The utility model relates to a connect at well head special circulating valve on drilling rod or drill collar upper portion, its is at the well drilling in-process, and the lower part is connected with the drilling rod, and upper portion drives with the top and is connected.
Specifically, the utility model discloses a special circulating valve of well head includes a main part shell, wherein:
the main body shell is provided with an upper joint and a lower joint;
a cavity communicated up and down is formed in the main body shell, and a valve and a piston cavity capable of controlling the up-down communication state in the cavity are arranged in the cavity; the piston cavity is internally provided with a piston with an upper and lower communicating channel in the middle, the piston can move between a first position and a second position in the piston cavity, and a first reset mechanism is arranged between the piston and the main body shell; be provided with two through-holes on main body cover's the lateral wall: the first through hole is used for inputting piston driving liquid so as to push the piston to move from a second position, stretched by the first resetting mechanism, to a first position, stressed by the first resetting mechanism, in the piston cavity, and the second through hole is used for inputting drilling fluid;
the piston wall is also provided with a third through-hole which is in partial or complete communication with the second through-hole when the piston is moved to the first position.
The valve is a one-way valve, preferably, the one-way valve comprises a valve plate pin shaft and a valve plate, and further preferably, a second reset unit, for example, a reset spring such as a torsion spring, is arranged on the valve plate.
And a sealing space is formed between the interior of the first through hole and the flange of the piston, and the piston flange is pushed to drive the whole piston to move when the piston driving liquid is injected.
The utility model also discloses a drilling equipment of adopting above-mentioned well head special circulating valve.
The utility model also discloses a drilling method of adopting above-mentioned well head special circulating valve, including following step:
when drilling, the special circulating valve for the wellhead is connected to a drill collar or a drill rod, and the drilling fluid enters the special circulating valve for the wellhead through top drive and then enters the drill rod or the drill collar through the special circulating valve for the wellhead; or
When the drill rod or the drill collar is replaced, the drill rod or the drill collar is clamped, and the quick joint is respectively connected with the first through hole and the second through hole on the side surface of the special circulating valve for the wellhead and is simultaneously sealed; the top drive closes the circulation, the quick connector opens the circulation, the drilling fluid enters the first through hole of the special circulating valve for the wellhead from the quick connector and pushes the piston to move, the second through hole is communicated with the special circulating valve for the wellhead after the pressure reaches a certain value, the drilling fluid enters the interior of the drill rod along the second through hole, the valve plate is in a closed state at the moment, and the special circulating valve for the wellhead and the drill rod are detached by rotating the top drive.
The technical solution of the present invention will be further explained with reference to the drawings and the specific embodiments. It should be noted that the following specific examples are given for illustrative purposes only and are not intended to limit the present invention.
As shown in figures 1-4, in the drilling process, the special circulating valve for the wellhead of the utility model is connected with a drill collar or a drill rod and is placed on a workbench for standby, and the special circulating valve for the wellhead is connected on the upper part of the drill collar. Connecting a drill rod and a drill collar which are connected with a special circulating valve for the wellhead in advance with a lower tool for drilling operation, wherein the drilling fluid enters the inside of the special circulating valve for the wellhead through top drive and then enters the drill rod or the drill collar through the special circulating valve for the wellhead; when the drill rod or the drill collar is replaced, the portable slips are seated on the wellhead to clamp the drill rod, the quick connector is connected with the second through hole in the side face of the special circulating valve for the wellhead, the top drive is closed to circulate, the quick connector is opened to circulate, drilling fluid enters the special circulating valve for the wellhead from the quick connector and then enters the drill rod, and at the moment, the top drive is detached to be connected with the next drill rod. Because the upper part of the special circulating valve for the wellhead is provided with the valve plate structure, mud can be prevented from being sprayed out from the upper part of the special circulating valve for the wellhead, and the circulating process of the whole drilling string is completed simultaneously.
In this embodiment, the utility model discloses a special circulating valve of well head comprises main part dabber (main body cover) 1, valve plate round pin axle 2, valve plate 3, reset spring (first canceling release mechanical system) 4, balancing hole (first through-hole) 5, overflow piston (piston) 6, overflow hole (second through-hole) 7, sealing washer 8 and piston overflow hole (third through-hole) 9 etc..
The upper part of the main body mandrel 1 is designed with standard drill rod threads for connecting a drill rod and a top drive. A valve plate 3 is designed and processed in an inner cavity of the upper portion of a main body mandrel 1 and is connected with the main body mandrel 1 through a valve plate pin shaft 2, and a valve plate torsion spring 10 is installed between the valve plate and the pin shaft.
A return spring 4 is arranged in the middle of a main body mandrel 1, an overflowing piston 6 is arranged below the return spring 4, a sealing ring 8 is arranged on the overflowing piston 6, and an overflowing hole 9 is arranged on the piston. And a sealing ring 8 sealed with the overflowing piston 6 is arranged on the main body mandrel 1 and used for sealing the overflowing piston 6. The lower part of the main body mandrel 9 is designed and processed with a drill rod sealing thread.
The utility model discloses a quick-operation joint is connected with discharge orifice 7, and the balanced hole 5 of switch-on drives simultaneously and overflows the piston motion. After the quick connector is disassembled, the overflowing piston is pushed to the bottom dead center position (second position) by the return spring.
In another embodiment, the upper part of the circulation valve for wellhead is designed with drill pipe thread, through which it is connected with the drill pipe or the top drive. The lower part is designed with drill rod threads which can be connected with a drill rod and a drill string.
The utility model discloses a special circulating valve of well head is on each drilling rod is received in advance, and upper portion is not connected with other special circulating valve of well head. In the drilling process, the lower part of the special circulating valve for the wellhead is connected with a drill rod, and the upper part of the special circulating valve for the wellhead is connected with a top drive. When the drill rod is replaced, the quick connector is connected with the special circulating valve for the well head, and the quick connector is communicated with the balance hole 5 and the overflowing hole 7 of the special circulating valve for the well head and is sealed at the same time. The top drive closes the cycle, and the valve plate 3 closes the valve plate under the effect of valve plate torsional spring 10. The quick connector injects drilling fluid into the special circulating valve for the wellhead, a part of the drilling fluid enters the special circulating valve for the wellhead along the balance hole 5 and enters a sealing cavity formed by the combination of the overflowing piston 6 and the main body mandrel 1, and along with the increase of pressure, the drilling fluid pushes the overflowing piston 6, compresses the return spring 4 and moves upwards. When the pressure reaches a certain value, the overflowing hole 9 in the overflowing piston 6 is aligned with the overflowing hole 7 in the main body mandrel, drilling fluid enters the drill rod along the overflowing hole, the valve plate 3 is in a closed state at the moment, and the special circulating valve for the wellhead and the drill rod can be detached by rotating the top drive.
And lifting the top drive, connecting the other drill rod connected with the special circulating valve of the wellhead with the circulating drill string, and buckling the drill rod to be connected with the top drive. At this point the supply of quick connector drilling fluid is closed while the top drive drilling fluid circulation is opened. When the slurry supply of the quick connector is closed, the spring pushes the overflowing piston to move downwards under the action of the return spring, the overflowing hole on the closed overflowing piston is displaced from the overflowing hole on the main body mandrel, hole positions are not aligned, and the slurry cannot flow into the special circulating valve of the wellhead from the quick connector or flow into the quick connector from the special circulating valve of the wellhead. At the moment, the drilling fluid enters the drill rod from the top drive, and normal drilling construction can be carried out.
The utility model discloses mainly be applied to the well drilling work progress of incessant circulation mud, still can be applied to and drive the accident to the top, can not circulate in the drilling's of well burst operating mode.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A wellhead-specific circulation valve, comprising a body housing, wherein:
the main body shell is provided with an upper joint and a lower joint;
a cavity communicated up and down is formed in the main body shell, and a valve and a piston cavity for controlling the cavity to be communicated up and down are arranged in the cavity; the piston cavity is internally provided with a piston with a communication channel in the middle, the piston can move between a first position and a second position in the piston cavity, and a first reset mechanism is arranged between the piston and the main body shell;
the side wall of the main body shell is provided with two through holes, wherein a closed space is formed between the interior of the first through hole and the piston, and when driving liquid is input from the first through hole, the piston can be pushed to move from the second position, where the first resetting mechanism is unfolded, to the first position, where the first resetting mechanism is stressed, in the piston cavity; the second through hole is used for inputting drilling fluid;
and when the piston moves to the first position, the third through hole is partially or completely communicated with the second through hole, so that the drilling fluid input by the second through hole can flow to the lower connector through the inner cavity of the main body shell.
2. The wellhead-specific circulation valve of claim 1, wherein the valve is a one-way valve.
3. The wellhead-specific circulation valve of claim 2, wherein the valve is a one-way valve comprising a valve plate pin and a valve plate.
4. The wellhead-specific circulation valve according to claim 3, wherein a second reset unit is provided on the valve plate.
5. The wellhead-specific circulation valve according to claim 4 wherein the second return element is a torsion spring.
6. A drilling device using the circulation valve special for the wellhead as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022004871.4U CN212583653U (en) | 2020-09-14 | 2020-09-14 | Special circulating valve for wellhead and drilling equipment adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022004871.4U CN212583653U (en) | 2020-09-14 | 2020-09-14 | Special circulating valve for wellhead and drilling equipment adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212583653U true CN212583653U (en) | 2021-02-23 |
Family
ID=74652698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022004871.4U Active CN212583653U (en) | 2020-09-14 | 2020-09-14 | Special circulating valve for wellhead and drilling equipment adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212583653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031686A (en) * | 2020-09-14 | 2020-12-04 | 北京博德世达石油技术股份有限公司 | Circulating valve special for wellhead, drilling equipment adopting circulating valve and drilling method |
-
2020
- 2020-09-14 CN CN202022004871.4U patent/CN212583653U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031686A (en) * | 2020-09-14 | 2020-12-04 | 北京博德世达石油技术股份有限公司 | Circulating valve special for wellhead, drilling equipment adopting circulating valve and drilling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212583653U (en) | Special circulating valve for wellhead and drilling equipment adopting same | |
| CN102650200B (en) | Shot-free unidirectional blocking valve | |
| CN201778747U (en) | Controllable packer | |
| CN203347736U (en) | Water-injection packer capable of being subjected to deblocking step by step | |
| CN109441399A (en) | One kind can sand washing bridge plug | |
| CN203285385U (en) | Hydraulic control packer | |
| CN112031686A (en) | Circulating valve special for wellhead, drilling equipment adopting circulating valve and drilling method | |
| CN209179726U (en) | One kind can sand washing bridge plug | |
| CN111219165A (en) | Repeated triggering type blowout-preventing reversing tool under pump | |
| CN204457614U (en) | A kind of two disc type circulating valve that breaks | |
| CN116733421A (en) | Hydraulic ball throwing device for well drilling coring and well drilling coring process | |
| CN206874249U (en) | Fluid power expansion type well packer capable of flushing well | |
| CN109798085A (en) | A kind of normally closed type unidirectionally injects downhole blow-out preventer | |
| CN209838368U (en) | Closed type plugging agent feeding tool for oil field | |
| CN107780875A (en) | A kind of blanking plug | |
| CN210859161U (en) | Hydraulic control blowout preventer for pump oil pipe | |
| CN109779547B (en) | Downhole liquid flow reversing tool | |
| CN210858637U (en) | Turning plate type underground oil pipe hydraulic control blowout preventer | |
| CN209469412U (en) | A kind of balanced type fracturing packer | |
| CN113445954A (en) | Circulating oil pipe liquid accuse environmental protection blowout preventer under pump | |
| RU2709852C1 (en) | Hydraulic device for selective processing | |
| CN112177574B (en) | Linkage type hydraulic layer-changing switch and linkage type layer-changing method | |
| CN114251066A (en) | Combined switch and hydraulic dragging comprehensive sand washing device and process | |
| CN208718610U (en) | It is a kind of can dock recycle setting insert pump blowout hookup | |
| CN2535558Y (en) | Under-pump liquid-mixing circulation oil-production apparatus for oil-pumping well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |