CN1170050C - Modulation type offset leading tool - Google Patents
Modulation type offset leading tool Download PDFInfo
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- CN1170050C CN1170050C CNB011078251A CN01107825A CN1170050C CN 1170050 C CN1170050 C CN 1170050C CN B011078251 A CNB011078251 A CN B011078251A CN 01107825 A CN01107825 A CN 01107825A CN 1170050 C CN1170050 C CN 1170050C
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- control
- moushroom valve
- controlling organization
- drilling
- axle
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Abstract
The present invention relates to a closed-loop automatic guide underground drilling tool which is applied to the field of petroleum well drilling. The present invention utilizes a natural pressure difference of drilling fluid as a power supply of the entire system in the process of well drilling, a stabilized control platform is formed by an imbalance mechanism to control the flow direction of the drilling fluid, and thereby, the action of the whole system is controlled. Thereby, the present invention has the advantages of simple structure and practicality, and the electric consumption is greatly reduced. When the present invention is matched with instruments used for the measurement while drilling, the logging while drilling, the formation evaluation logging while drilling, etc., a maximum stage of the existing drilling technology, namely underground closed-loop automatic guide well drilling, can be achieved.
Description
Technical field
The invention belongs to petroleum exploration and development closed loop automatic guide drilling well downhole tool.
Background technology
Along with most of oil field in the world enters development late stage, the oil reservoir development difficulty is increasing, and special wells such as directional well, horizontal well, extended reach well, designer's well have become the main development tool that adapts to this exploitation situation demand.A job of the most critical in the construction of this class well is led to well exactly, promptly controls well and creeps into by hole deviation, the orientation of design.
The traditional direction mode is to adopt curved shell down-hole motor to creep into sliding type, and there is following major defect in it:
1. hole trajectory control low precision;
2. owing to be to adopt sliding type to creep into, make and creep into limit well depth and be restricted;
3. well is not slick and sly, and mill resistance, moment of torsion are increased;
4. wellbore quality and borehole status are not good, are prone to the down-hole complex accident;
5. increased the drilling number of times, reduced rate of penetration, drilling cost is risen greatly.
For solving the hole trajectory control low precision that the traditional direction mode exists, poor hole quality, the drilling well down-hole accident is many, the drilling cost height, and creep into the restricted problem of limit well depth, to satisfy latter period of oilfield development, special wells such as a large amount of directional wells, horizontal well, extended reach well, designer's well, become the demand of this exploitation situation of main means of oil and gas development gradually, at the end of the eighties, closed loop automatic guide drilling technology occurs.After entering the nineties, this technology has obtained developing rapidly, the mid-90, external existing several rotational automatic guidance system successes of the test also drop into field popularization application, and obtained good effect, as the automatic well system of rotation closed loop of Baker Hughes Inc, be exactly to use ripe several closed loop automatic guide well systems based on the automatic well system of rotation closed loop of the Schlumberger company of United States Patent (USP): US005520255.The present invention is exactly for satisfying a kind of modulation type offset leading tool that the oil and gas development needs design.
It is compared with the traditional direction mode, has the following advantages:
1. the hole trajectory control precision is higher than the traditional direction mode;
2. creep into owing to adopting rotation mode to lead, drilling well limit well depth is improved greatly;
3. well slyness, the well that mill resistance, moment of torsion creep into far below the traditional direction mode;
4. wellbore quality and borehole status are better than the well that the traditional direction mode is crept into, and greatly reduce down-hole complex accident odds;
5. reduced the number of times that makes a trip, improved rate of penetration, drilling cost is reduced greatly.
Compare with the automatic well system of rotation closed loop of Baker Hughes Inc, the present invention has omitted complicated hydraulic system, and utilize in the drilling process drilling fluid pressure reduction that exists naturally power source as whole system, control the action of whole system by controlling a solenoid operated directional valve, make the present invention simple in structure, power consumption reduces greatly, therefore, solve system's spontaneous heating problem, and prolonged the underground work time; Simultaneously, control system can directly receive the surface instruction that changes transmission by drilling liquid pressure by pressure sensor, has solved the instruction transmission communication problem of very difficult solution in simple mode; Compare with the automatic well system of rotation closed loop (US005520255) of Schlumberger company, the present invention has omitted complicated stabilized platform control system, and the stability of measure and control device is controlled in the action of gravity that utilizes eccentric hammer, thereby has simplified its structure greatly, has improved its functional reliability.With itself and measurement while drilling, well logging during, with boring instrument fit applications such as formation evaluation well logging, can realize the rotational automatic steerable drilling of downhole closed loop.
Summary of the invention
The present invention is achieved in that laying particular stress on mechanism 3 is connected with the inwall of no magnetic urceolus 5 by bearing 2,7; Lay particular stress on mechanism 3 inside measure and control device 4 is installed, connecing an end installing angle controlling organization 6 of drill bit, the other end is installed both-way communication device 1; Corner controlling organization 6 is connected with measure and control device 4 by control circuit 18 respectively with both-way communication device 1; Last control axle 8 by corner controlling organization 6 with lay particular stress on mechanism 3 and be connected, and by control axle adapter 9 with control axle 10 down and be connected; Control down on the control moushroom valve 13 that axle 10 is fixed in moushroom valve controlling organization 20; The pressure release moushroom valve 11 of moushroom valve controlling organization 20 is fixed in the inwall of biasing pipe nipple 19, and the barrel that its relief hole 12 passes biasing pipe nipple 19 leads to biasing pipe nipple 19 outsides; The water conservancy diversion moushroom valve 14 of moushroom valve controlling organization 20 is fixed in the inwall of biasing pipe nipple 19, and its pod apertures 16 is connected with the support rib hydraulic cavities 21 of the support rib of controlling separately 15 respectively.
Figure of description
Accompanying drawing 1, a kind of modulation type offset leading tool schematic diagram
Description of drawings
1 both-way communication device, 2 bearings
3 lay particular stress on mechanism's 4 measure and control devices
5 no magnetic urceolus 6 corner controlling organizations
Control axle on 7 bearings 8
10 times control of 9 control axle adapters axle
11 pressure release moushroom valves, 12 relief holes
13 control moushroom valves, 14 water conservancy diversion moushroom valves
15 support rib 16 pod apertures
17 connect drill bit screw thread 18 control circuits
19 biasing pipe nipples, 20 moushroom valve controlling organizations
21 support the rib hydraulic cavities
The specific embodiment
Now the present invention will be further described in conjunction with Figure of description:
The present invention is received drill bit top, be lowered in the well of certain hole deviation, laying particular stress on mechanism 3 will be under the effect of gravity, is independent of rotating in a circumferential direction of drill string and is in metastable state.
By measure and control device 4 according to result to the analysis of metrical information, explanation, contrast, or according to the surface instruction that has both-way communication device 1 to come by control circuit 18 transmission, send control instruction by control circuit 18 to corner controlling organization 6, control it and remain on a certain angle by command request, make control moushroom valve 13 by on control axle 8, control axle adapter 9 and down under the effect of the Control Shaft mechanism that forms of control axle 10, be independent of the rotation of drill string and relatively stable in a certain position; Like this, along with the rotation of drill string, each supports the support rib hydraulic cavities 21 of rib 15 and coupled pod apertures 16 and will distinguish successively and connect with the pressure hole and the low pressure hole of control moushroom valve 13; When connecting with pressure hole, high pressure drilling liquid will support rib 15 and be supported in the borehole wall by the support rib hydraulic cavities 21 that pod apertures 16 enters this support rib 15, and the reaction force of the borehole wall makes drill bit lead by design direction for drill bit provides a lateral force; When drill string rotates to an angle again, this passageway shuts off, supporting rib hydraulic cavities 21 and pod apertures 16 will connect with relief hole 12, support the high pressure drilling liquid that stores in rib hydraulic cavities 21 and the pod apertures 16 and will enter the low pressure annular space of drill string outside by relief hole 12, release pressure, make and support rib 15 withdrawals; Like this, drill string whenever rotates a circle, and each on it supports rib 15 and will when drill string is rotated further, supports rib 15 and will regain again, thereby realize guide effect in the pre-position expenditure by 6 controls of corner controlling organization.
The present invention has omitted complicated hydraulic system, and utilize in the drilling process drilling fluid pressure reduction that exists naturally power source as whole system, control the action of whole system by controlling a solenoid operated directional valve, the present invention is compared with external existing offset guiding tool, have simple in structure, the characteristics that power consumption is low, therefore, solve system's spontaneous heating problem, and prolonged the underground work time; Simultaneously, the present invention has omitted complicated stabilized platform control system, and utilizes the action of gravity of eccentric hammer to control the stability of measure and control device, thereby has simplified its structure greatly, has improved its functional reliability.With itself and measurement while drilling, well logging during, with boring instrument fit applications such as formation evaluation well logging, can realize the rotational automatic steerable drilling of downhole closed loop.
Claims (2)
1. modulation type offset leading tool, form by three flexible ribs and the flexible moushroom valve controlling organization (20) of control rib, moushroom valve controlling organization (20) is made up of control moushroom valve (13) and water conservancy diversion moushroom valve (14), it is characterized in that: lay particular stress on mechanism (3) and be connected with the inwall of no magnetic urceolus (5) by bearing (2,7); Lay particular stress on mechanism 3 inside measure and control device (4) is installed, connecing an end installing angle controlling organization (6) of drill bit, the other end is installed both-way communication device (1); Corner controlling organization (6) is connected with measure and control device (4) by control circuit (18) respectively with both-way communication device (1); Last control axle (8) by corner controlling organization (6) with lay particular stress on mechanism (3) and be connected, and by control axle adapter (9) with control axle (10) down and be connected; Control down on the control moushroom valve (13) that axle (10) is fixed in moushroom valve controlling organization (20).
2. a kind of modulation type offset leading tool according to claim 1, it is characterized by: the pressure release moushroom valve (11) of moushroom valve controlling organization (20) is fixed in the inwall of biasing pipe nipple (19), and the barrel that its relief hole (12) passes biasing pipe nipple (19) leads to biasing pipe nipple (19) outside; The control moushroom valve 13 of moushroom valve controlling organization (20) is fixed in down control axle (10), and by control axle (10) down, control axle adapter (9), on control axle (8), corner controlling organization (6) and lay particular stress on mechanism (3) and be connected; The water conservancy diversion moushroom valve (14) of moushroom valve controlling organization (20) is fixed in the inwall of biasing pipe nipple (19), and its pod apertures (16) is connected with the support rib hydraulic cavities (21) of the support rib of controlling separately (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011078251A CN1170050C (en) | 2001-02-23 | 2001-02-23 | Modulation type offset leading tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011078251A CN1170050C (en) | 2001-02-23 | 2001-02-23 | Modulation type offset leading tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1372065A CN1372065A (en) | 2002-10-02 |
| CN1170050C true CN1170050C (en) | 2004-10-06 |
Family
ID=4656730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011078251A Expired - Fee Related CN1170050C (en) | 2001-02-23 | 2001-02-23 | Modulation type offset leading tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1170050C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378289C (en) * | 2005-04-14 | 2008-04-02 | 中国石化集团胜利石油管理局钻井工艺研究院 | Mechanical automatic vertical drilling tool |
| CN105134079B (en) * | 2015-09-18 | 2018-01-23 | 中国地质大学（北京） | A kind of mechanical static backup automatic vertical drilling system |
| US10544650B2 (en) * | 2017-10-29 | 2020-01-28 | Weatherford Technology Holdings, Llc | Rotating disk valve for rotary steerable tool |
| CN112096328A (en) * | 2020-09-18 | 2020-12-18 | 吉林大学 | Well wall supporting mechanism while drilling in well |
-
2001
- 2001-02-23 CN CNB011078251A patent/CN1170050C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1372065A (en) | 2002-10-02 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20041006 |