CN2578508Y - Controllable liquid inlet valve for rotary guiding drilling tool - Google Patents
Controllable liquid inlet valve for rotary guiding drilling tool Download PDFInfo
- Publication number
- CN2578508Y CN2578508Y CN 02270416 CN02270416U CN2578508Y CN 2578508 Y CN2578508 Y CN 2578508Y CN 02270416 CN02270416 CN 02270416 CN 02270416 U CN02270416 U CN 02270416U CN 2578508 Y CN2578508 Y CN 2578508Y
- Authority
- CN
- China
- Prior art keywords
- spool
- liquid inlet
- drilling
- valve seat
- control shaft
- 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 relates to an inlet liquid closing device for a modulation type rotating guide welldrilling tool for underground mining, which belongs to the technical field of development drilling in petroleum exploration, and is mainly composed of a control shaft and a switch assembly. In normal drilling work, a liquid inlet is closed, and the guide tool does not produce guiding force. When in need of carrying out guiding work, the liquid inlet is opened, and the guide tool is directly offered guiding force taking drilling fluid as the dynamic force. The utility model has the advantages of reasonable structure and advanced principle.
Description
Technical field
It is a kind of modulation system rotary steerable drilling downhole tool inlet shutoff device in the petroleum exploration and development drilling technology field that the utility model is applied to.
Technical background
The rotary steerable drilling technology is to occur the eighties in the world, an oil drilling new technology that grows up the nineties, compare with traditional steerable drilling, have hole trajectory control precision height, the well slyness that gets out, mill hinders, moment of torsion is low, drilling well limit Masaru Ibuka, advantages such as complex accident is few, and bit speed is fast, and drilling cost is low take place in the down-hole.Therefore can satisfy highly difficult special well steerable drilling demands such as horizontal well, extended reach well, three-dimensional multi target well.
Present rotary steerable drilling system mainly can be divided into modulation system rotary steering system and rotational shell formula rotary steering system not, and two big systems have all dropped into The field abroad.Modulation system rotary steering system downhole tool mainly by measuring system, control section stabilized platform, rib flexible and controlling organization etc. form.The flexible of rib provides power by drilling fluid, and distributed by the moushroom valve controlling organization.In the drilling process, when leading operation, drilling fluid provides guiding force for steering tool; When not leading operation, rib is not paid, and does not need power, and this moment, drilling fluid can not enter steering tool.The utility model is exactly a kind of inlet shutoff device for realizing that guiding operation of modulation system rotary steerable drilling system and non-guiding operation control propose.
Summary of the invention
Modulation system rotary steerable drilling downhole tool inlet shutoff device is achieved in that the inlet shutoff device is installed between TT﹠C system and the moushroom valve control system, valve seat [2] is fixed on the moushroom valve [5], spool [3] connects with TT﹠C system by Control Shaft [1], seals between spool [3] and the valve seat [2] and can relatively rotate.When leading operation, Control Shaft [1] drives spool [3] and rotates under the control system effect, and two inlets [4] on valve seat [2] and the spool [3] overlap, and high-pressure fluid enters valve body, and provides guiding force by the moushroom valve control system for steering tool.When not leading operation, Control Shaft [1] drives spool [3] and rotates under the control system effect, and two inlets [4] on valve seat [2] and the spool [3] stagger, and inlet is closed, owing to do not have highly pressurised liquid that guiding force is provided, thereby steering tool is not worked.
Description of drawings
Fig. 1, a kind of modulation system rotary steerable drilling downhole tool inlet shutoff device schematic diagram
1 Control Shaft, 2 valve seats, 3 spools, 4 inlets
Moushroom valve on 5
The specific embodiment
Now the present invention will be further described in conjunction with Figure of description: the inlet shutoff device is installed between TT﹠C system and the moushroom valve control system, valve seat [2] is fixed on the moushroom valve [5], spool [3] connects with TT﹠C system by Control Shaft [1], seals between spool [3] and the valve seat [2] and can relatively rotate.When leading operation, Control Shaft [1] drives spool [3] and rotates under the control system effect, and two inlets [4] on valve seat [2] and the spool [3] are overlapped, and high-pressure fluid enters valve body, and provides guiding force by the moushroom valve control system for steering tool.When not leading operation, Control Shaft [1] drives spool [3] and rotates under the control system effect, two inlets [4] on valve seat [2] and the spool [3] are staggered, and inlet is closed, owing to do not have highly pressurised liquid that guiding force is provided, thereby steering tool is not worked.
The inlet shutoff device is one of indispensable device of accurately leading of modulation system rotary steerable drilling downhole tool, its accurate control of well track when realizing non-guiding operation provides guarantee, the well that the down-hole rotary steerable drilling system is got out is more smooth, and the well amplification degree is littler.
Claims (2)
1. modulation system rotary steerable drilling downhole tool inlet shutoff device, it is characterized in that: device mainly is made up of valve seat [2], spool [3] and Control Shaft [1] etc., the lower end of valve seat [2] is fixed on the moushroom valve [5], and the upper end is sleeved on the spool [3], and spool [3] connects with Control Shaft [1].
2. rotary steerable drilling downhole tool inlet shutoff device according to claim 1, it is characterized by: Control Shaft [1] is for irregularly shaped, spool [3] is cylindrical, the bottom is processed as hollow, the side is processed with a hole, valve seat [2] upper side also is processed with a hole, and spool [3] is identical with hole size on the valve seat [2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02270416 CN2578508Y (en) | 2002-10-29 | 2002-10-29 | Controllable liquid inlet valve for rotary guiding drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02270416 CN2578508Y (en) | 2002-10-29 | 2002-10-29 | Controllable liquid inlet valve for rotary guiding drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578508Y true CN2578508Y (en) | 2003-10-08 |
Family
ID=33735482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02270416 Expired - Fee Related CN2578508Y (en) | 2002-10-29 | 2002-10-29 | Controllable liquid inlet valve for rotary guiding drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578508Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265168A (en) * | 2014-07-28 | 2015-01-07 | 西南石油大学 | Dynamic internal bias point-the-bit rotary steering device |
-
2002
- 2002-10-29 CN CN 02270416 patent/CN2578508Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265168A (en) * | 2014-07-28 | 2015-01-07 | 西南石油大学 | Dynamic internal bias point-the-bit rotary steering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |