CN201152167Y - Downhole tool constant pressure signal valve - Google Patents
Downhole tool constant pressure signal valve Download PDFInfo
- Publication number
- CN201152167Y CN201152167Y CNU2008200169787U CN200820016978U CN201152167Y CN 201152167 Y CN201152167 Y CN 201152167Y CN U2008200169787 U CNU2008200169787 U CN U2008200169787U CN 200820016978 U CN200820016978 U CN 200820016978U CN 201152167 Y CN201152167 Y CN 201152167Y
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- orifice plate
- mushroom head
- downhole tool
- orifice
- signal valve
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Abstract
The utility model provides a downhole tool constant voltage signal valve and belongs to a downhole tool state signal generator. The signal valve is characterized in that an orifice assembly at the upper part consists of an orifice seat and an orifice; a mushroom head assembly at the lower part consists of a mushroom head, a flow passage frame and a constant force spring. The orifice is arranged in an inner chamber at the lower part of the orifice seat. The lower part of the mushroom head is arranged at the upper part of a dead hole in the axial center of the flow passage frame; the constant force spring is arranged at the lower part of the dead hole in the axial center of the flow passage frame. The top part of the mushroom head is inserted into a bell mouth at the lower part of the orifice; the distance between the mushroom head and the orifice can be changed. The signal valve has the advantages of simple structure, low manufacturing cost, convenient installation and use, safe and reliable work. One size of orifice and mushroom head is enough for each well to get constant, clear and obvious pressure signals, thereby not only saving the cost of activity and working time, but also leading the leaking stoppage materials to pass through to avoid circulation channel being blocked at this place. The signal valve is suitable for all kinds of downhole tool with different well sizes and all kinds of drilling conditions.
Description
(1) technical field
The utility model relates to downhole tool status signal generating means such as drilling well, oil recovery, especially to the flow or the pressure-sensitive signal valve device of used liquid.It particularly is a kind of downhole tool constant voltage signal valve.
(2) background technology
In drilling operations such as oil, mine locating, mining coal seam gas, there are many downhole tools (as tapered stabilizer, disconnected device, extension hanger, the reamer etc. of milling of sleeve pipe) moving (being state variation), with the function that realizes that certain is specific.State variation has taken place in downhole tool, just sends corresponding signal earthward by its signal generation apparatus, makes the terrestrial operation personnel understand the trend of work of downhole tool at any time.The pressure signal valve is exactly the signal generation apparatus of some downhole tool, and it can only produce a kind of pressure signal (high or low).Original pressure signal valve is made up of orifice plate and mushroom head (or needle-valve), changes orifice plate and mushroom the two gap of head or distance, can change area of passage, produces the high and low pressure force signal.But the plate hole of certain diameter cooperates pressure drop difference when different drilling fluid densities, flow with the mushroom head.This pressure drop is too big or too little not to be allowed, and has to repeatedly change the orifice plate (or mushroom head) of different-diameter, obtains moderate pressure drop, and this just must process the orifice plate that is equipped with a large amount of different-diameters.Yet change orifice plate and adjust very complexity and difficult of spacing, and the signal that spreads out of is clear inadequately, accurate.Also less owing to crossing ebb interval herein, when the generation leakage was carried out plugging operations, plugging material can stop up herein and can not circulate, and causes the downhole safety accident.Patent documentation is not found relevant documents by retrieval.
(3) summary of the invention
The purpose of this utility model just is autonomous innovation, develops and provide a kind of downhole tool constant voltage signal valve.Overcome the above-mentioned shortcoming of original pressure signal valve.Only need a kind of orifice plate and mushroom head of diameter to be of moderate size and constant pressure drop, and loss circulation material is passed through smoothly with regard to obtaining.
Above-mentioned purpose is realized by following technical proposals:
Downhole tool constant voltage signal valve comprises orifice plate assembly and mushroom head assembly two parts, and top is the orifice plate assembly, and the bottom is the mushroom head assembly.It is characterized in that the orifice plate assembly is made up of orifice plate seat and orifice plate.The mushroom head assembly is made up of mushroom head, overcurrent frame and constant force spring.Orifice plate is contained in the Lower Half inner chamber of orifice plate seat.The Lower Half of mushroom head is contained in the axial centre blind hole first half of overcurrent frame, and constant force spring is contained in the axial centre blind hole Lower Half of overcurrent frame.A mushroom upper end extend in the horn mouth of orifice plate Lower Half.Mushroom head and orifice plate between the two the size in crack can change.
Orifice plate seat in the above-mentioned downhole tool constant voltage signal valve, its profile is a cylindrical shape, and its first half is a hexagonal prism shape, and its inner chamber bottom is a toroidal.
Orifice plate in the above-mentioned downhole tool constant voltage signal valve, its first half external diameter are less than the Lower Half external diameter, and its inner chamber Lower Half is a toroidal.
Mushroom head in the above-mentioned downhole tool constant voltage signal valve, its upper end are conical thick head, and remainder is the cylinder stock.
Overcurrent frame in the above-mentioned downhole tool constant voltage signal valve, its profile is a cylindrical shape, in the radially gusset of three circumference uniform distributions is arranged, constitute the axial overcurrent vestibule of three circumference uniform distributions, axial blind hole is arranged in the central cylinder.The following central cylinder bottom of blind hole is the nose cone shape.
This downhole tool constant voltage signal valve, simple in structure and ingenious, the processing and manufacturing cost is low, installs and uses easily, and work safety is reliable again.Every mouthful of well only needs a constant voltage signal valve, just can obtain the constant compression force signal, needn't repeatedly change the apolegamy orifice plate.Can save operating cost and man-hour, can make the pressure signal that spreads out of clear, accurate again, loss circulation material is passed through smoothly, prevent to take place the obstruction accident herein.
(4) description of drawings
Accompanying drawing 1 is a high-voltage signal status architecture schematic diagram of the present utility model
Accompanying drawing 2 is low-voltage signal status architecture schematic diagrames of the present utility model.
Accompanying drawing 3 is B-B generalized sections of Fig. 2.
(5) specific embodiment
Embodiment of accompanying drawings:
In the accompanying drawing 1～3, the 1st, the orifice plate seat, the 2nd, orifice plate, the 3rd, the mushroom head, the 4th, the overcurrent frame, the 5th, constant force spring, A are the overcurrent vestibules, C was an ebb interval.
Shown in Fig. 1,2, downhole tool constant voltage signal valve comprises orifice plate assembly and mushroom head assembly two parts, and top is the orifice plate assembly, and the bottom is the mushroom head assembly.It is characterized in that the orifice plate assembly is made up of orifice plate seat 1 and orifice plate 2.The mushroom head assembly is made up of mushroom 3, overcurrent frame 4 and constant force spring 5.Orifice plate 2 is contained in the Lower Half inner chamber of orifice plate seat 1.The Lower Half of mushroom 3 is contained in the axial centre blind hole first half of overcurrent frame 4, and constant force spring 5 is contained in the axial centre blind hole Lower Half of overcurrent frame 4.Mushroom 3 upper end extend in the horn mouth of orifice plate 2 Lower Halves.The two the size of clearance C of mushroom 3 and orifice plate can change.
Shown in Fig. 1,2, orifice plate seat 1 profile is a cylindrical shape, and its first half is a hexagonal prism shape, and its inner chamber bottom is a toroidal.
Shown in Fig. 1,2, orifice plate 2 first half external diameters are less than the Lower Half external diameter, and its inner chamber Lower Half is a toroidal.
Shown in Fig. 1,2, mushroom 3 upper end are conical thick head, and remainder is the cylinder stock.
Shown in Fig. 1,2,3, overcurrent frame 4 profiles are cylindrical shape, in the radially gusset of three circumference uniform distributions is arranged, constitute the axial overcurrent vestibule A of three circumference uniform distributions thus, axial blind hole is arranged in the central cylinder, and the following central cylinder bottom of blind hole is the nose cone shape.
Downhole tool constant voltage signal valve operating principle explanation: upper and lower two parts of this constant voltage signal valve are installed in downhole tool respectively to be had on the different parts of relative motion (state change).For example: the orifice plate assembly is installed in that sleeve pipe is disconnected to be milled on the mandrel of device, and the mushroom head assembly is installed in that sleeve pipe is disconnected to be milled on the housing of device.When mandrel and housing generation relative motion (having state to change), the orifice plate assembly also changes with the two spacing of mushroom head assembly.When the two spacing becomes big (as Fig. 2), it is big that the area of passage at overcurrent clearance C place becomes, and ground shows low-voltage signal; When the two pitch smaller (as Fig. 1), the area of passage at overcurrent clearance C place diminishes, and ground shows high-voltage signal.The high and low operating state of learning downhole tool by pressure signal.As long as its high and low pressure signal difference is obvious, will be accurate.Because the utility model has been adopted the new method of " spring precompressed; regulate area of passage automatically ", no matter drilling fluid density, displacement size, can produce pressure signal almost constant, that preestablish size, so only need a kind of plate hole 2 of dimensions and mushroom 3, just can adapt to the downhole tool and the various drilling condition of various borehole sizes.Because spring 5 can be flexible with the size of pressure, loss circulation material can not stop up circulation canal at this signal valve place yet when therefore leakage taking place.The distinguished innovation part of the utility model that Here it is.
Claims (5)
1. downhole tool constant voltage signal valve, comprise orifice plate assembly and mushroom head assembly two parts, top is the orifice plate assembly, the bottom is the mushroom head assembly, it is characterized in that the orifice plate assembly is made up of orifice plate seat (1) and orifice plate (2), the mushroom head assembly is by mushroom head (3), overcurrent frame (4) and constant force spring (5) are formed, orifice plate (2) is contained in the Lower Half inner chamber of orifice plate seat (1), the Lower Half of mushroom head (3) is contained in the axial centre blind hole first half of overcurrent frame (4), constant force spring (5) is contained in the central blind hole Lower Half of overcurrent frame (4), mushroom head (a 3) upper end extend in the horn mouth of orifice plate (2) Lower Half, mushroom head (3) and orifice plate (2) between the two the size in crack (C) can change.
2. downhole tool constant voltage signal valve according to claim 1 is characterized in that orifice plate seat (1) profile is a cylindrical shape, and its first half is a hexagonal prism shape, and its inner chamber lower end is a toroidal.
3. downhole tool constant voltage signal valve according to claim 1 is characterized in that orifice plate (2) first half external diameter less than the Lower Half external diameter, and its inner chamber Lower Half is a toroidal.
4. downhole tool constant voltage signal valve according to claim 1 is characterized in that mushroom head (3) upper end is conical thick head, and remainder is the cylinder stock.
5. downhole tool constant voltage signal valve according to claim 1, it is characterized in that overcurrent frame (4) profile is a cylindrical shape, in the radially gusset of three circumference uniform distributions is arranged, constitute the axial overcurrent vestibule (A) of three circumference uniform distributions thus, axial blind hole is arranged in the central cylinder, and the following central cylinder bottom of blind hole is the nose cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200169787U CN201152167Y (en) | 2008-01-25 | 2008-01-25 | Downhole tool constant pressure signal valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200169787U CN201152167Y (en) | 2008-01-25 | 2008-01-25 | Downhole tool constant pressure signal valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201152167Y true CN201152167Y (en) | 2008-11-19 |
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ID=40127846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200169787U Expired - Fee Related CN201152167Y (en) | 2008-01-25 | 2008-01-25 | Downhole tool constant pressure signal valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201152167Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461172A (en) * | 2016-06-06 | 2017-12-12 | 本奇特里集团有限责任公司 | Downhole valve of straddle tool joint and production and preparation method thereof |
| CN112922564A (en) * | 2021-02-04 | 2021-06-08 | 西安石油大学 | Underground throttling device based on special degradable alloy ball conical plug adjustment |
-
2008
- 2008-01-25 CN CNU2008200169787U patent/CN201152167Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461172A (en) * | 2016-06-06 | 2017-12-12 | 本奇特里集团有限责任公司 | Downhole valve of straddle tool joint and production and preparation method thereof |
| CN112922564A (en) * | 2021-02-04 | 2021-06-08 | 西安石油大学 | Underground throttling device based on special degradable alloy ball conical plug adjustment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20100225 |