CN103216205A - Adjustable orifice sealing device for geological drilling - Google Patents
Adjustable orifice sealing device for geological drilling Download PDFInfo
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- CN103216205A CN103216205A CN2012101131665A CN201210113166A CN103216205A CN 103216205 A CN103216205 A CN 103216205A CN 2012101131665 A CN2012101131665 A CN 2012101131665A CN 201210113166 A CN201210113166 A CN 201210113166A CN 103216205 A CN103216205 A CN 103216205A
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- platen
- sealing device
- bearing ring
- pressure plate
- orifice
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Abstract
The invention relates to an adjustable orifice sealing device for geological drilling, which consists of a central pipe, an upper pressure plate, a pressure bearing ring, a sealing ring, a lower pressure plate and a locking bolt, wherein the upper end and the lower end of the central pipe can be connected with a drill rod, the pressure bearing ring is welded on the central pipe, the upper pressure plate and the lower pressure plate are fixed on the pressure bearing ring by the locking bolt, and the outer diameter of the sealing ring is consistent with the inner diameter of an orifice pipe and is arranged in an annular space between the upper pressure plate and the lower pressure plate. The upper end and the lower end of the orifice sealing device are connected with a drill rod and then are put into the orifice pipe to form sealing. The invention provides an adjustable orifice sealing device for geological drilling, which can conveniently seal an annular space between an orifice pipe and a drill rod, realize pressure leakage stoppage operation, simultaneously have the functions of pressure maintaining, righting, blowout prevention, hole wall stability maintaining and the like, improve the drilling efficiency and effectively reduce the drilling cost. In addition, the invention has simple structure, convenient processing, low cost and long service life, and can be repeatedly used for a long time.
Description
Affiliated technical field
The present invention relates to a kind of geological drilling adjustable port sealing device, be applicable to the boring upkeep operations such as pressure leak stopping in the geological drilling construction.
Background technology
In geological drilling, drilling fluid leakage is an a kind of difficult problem of common puzzlement unit in charge of construction.In the leak stopping process, have only loss circulation material is effectively clamp-oned in the leakage stratum, could realize fast blockage, and improve the intensity of plugged zone.Therefore, in the hole, apply certain pressure and carry out the pressure leak stopping, help loss circulation material effectively to enter the leakage stratum rapidly, realize fast blockage.In the oil well probing, can realize this process of pressure leak stopping by sealing devices such as preventer or aperture throttling arrangements; But in geological drilling, the aperture generally is open, does not have similar sealing device, therefore can't carry out the pressure leak stopping.
Summary of the invention
In order to overcome the technical problem that to carry out the pressure plugging operations in the current geological drilling because of no port seal, the invention provides a kind of geological drilling adjustable port sealing device, this port seal is the annulus between closed orifices pipe and drilling rod more easily, satisfy geological drilling and carry out the requirement of pressure plugging operations, and have pressurize, set upright, effect such as blowout prevention, maintenance hole wall are stable, can improve drilling efficiency, effectively reduce drilling cost.
The technical solution adopted for the present invention to solve the technical problems is: a kind of geological drilling usefulness adjustable port sealing device is made up of central tube, last platen, bearing ring, sealing ring, following platen, lock bolt, lower end, described central tube upper end all can be connected with drilling rod, bearing ring is welded on the central tube, last platen and following platen are fixed on the bearing ring with lock bolt, and the sealing ring external diameter is consistent with the orifice tube internal diameter to be installed in the annular space of platen and following platen centre.Be lowered in the orifice tube behind port seal upper end, the lower end jointed rod, form sealing between sealing ring and the orifice tube.Last platen, down platen, annulus, central tube can be selected A3 steel or 45# steel for use, machine through operations such as forging, car, sharp, brill, planes; Sealing ring can be made with rubber and resin elastomeric material, and its external diameter is consistent with the orifice tube internal diameter, and outward flange adopts fillet structure, conveniently is lowered in the orifice tube, and can changes the sealing ring of corresponding external diameter according to the difference of orifice tube internal diameter.
The invention has the beneficial effects as follows to geological drilling a kind of geological drilling adjustable port sealing device is provided, annulus between closed orifices pipe and drilling rod more easily, realize the pressure plugging operations, effects such as having pressurize simultaneously, set upright, blowout prevention, maintenance hole wall are stable, can improve drilling efficiency, effectively reduce drilling cost.In addition, the present invention is simple in structure, easy to process, cost is low, the life-span is long, can reuse for a long time.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is application principle figure of the present invention.
Fig. 2 is an elevation of the present invention.
Fig. 3 is a B-B sectional drawing of the present invention.
Fig. 4 is a vertical view of the present invention.
Fig. 5 is an A-A sectional drawing of the present invention.
1. top rods among Fig. 1,2. orifice tube, 3. adjustable port sealing device, 4. bottom drilling rod; 5. central tubes among Fig. 2,6. lock bolt is 7. gone up platen, and 8. sealing ring 10. descends platen; 5. central tubes among Fig. 3,6. lock bolt is 7. gone up platen, 8. sealing ring, 9. bearing ring 10. descends platen; 5. central tubes among Fig. 4,6. lock bolt is 7. gone up platen, 8. sealing ring; 5. central tubes among Fig. 5,6. lock bolt, 8. sealing ring, 9. bearing ring.
The specific embodiment
In Fig. 1, port seal 3 upper ends connect top rod 1, and port seal 3 lower ends connect bottom drilling rod 4, are lowered in the orifice tube 2, and port seal 3 forms sealing with orifice tube 2.
In Fig. 3, central tube 5 upper ends, lower end all are processed with the trapezoidal thread button and are used to connect top rod 1 and bottom drilling rod 4, be processed with 6 through holes respectively on bearing ring 9, last platen 7, the following platen 10, bearing ring 9 is welded on the central tube 5, last platen 7, time platen 10 are installed on the bearing ring 9 by lock bolt 6, and sealing ring 8 is installed in the annular space of platen 7 and following platen 10 centres.
In Fig. 5, bearing ring 9 is welded on the central tube 5, is processed with 6 through holes on the bearing ring 9, and last platen 7, following platen 10 will be installed on the bearing ring 9 by lock bolt 6, sealing ring 8 internal diameters are consistent with bearing ring 9 external diameters, can change the sealing ring 8 of corresponding external diameter according to the difference of orifice tube 2 internal diameters.
When application adjustable port sealing device 3 of the present invention carries out the pressure plugging operations, adjustable port sealing device 3 upper ends are connected top rod 1, the lower end connects bottom drilling rod 4, be lowered to and form sealing in the orifice tube 2, leakage-stop liquid and drilling fluid are pumped in the hole termination of pumping pressurize after reaching design pressure by slush pump.Because port seal of the present invention has sealing function, can make long period maintenance certain pressure in the hole, loss circulation material is pressed into the leakage stratum, realize the pressure plugging operations.
More than be preferred embodiment of the present invention, every change of making according to technical solution of the present invention when the function that is produced does not exceed the scope of technical solution of the present invention, all belongs to protection scope of the present invention.
Claims (3)
1. geological drilling adjustable port sealing device, by central tube 5, lock bolt 6, last platen 7, sealing ring 8, bearing ring 9, following platen 10 is formed.
2. a kind of geological drilling adjustable port sealing device according to claim 1, it is characterized in that bearing ring 9, go up platen 7, be processed with 6 through holes respectively on the platen 10 down, bearing ring 9 is welded on the central tube 5, and last platen 7, following platen 10 are installed on the bearing ring 9 by lock bolt 6.
3. a kind of geological drilling adjustable port sealing device according to claim 1, it is characterized in that sealing ring 8 is installed in the annular space of platen 7 and following platen 10 centres, sealing ring 8 internal diameters are consistent with bearing ring 9 external diameters, can change the sealing ring 8 of corresponding external diameter according to the difference of orifice tube 2 internal diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101131665A CN103216205A (en) | 2012-04-18 | 2012-04-18 | Adjustable orifice sealing device for geological drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101131665A CN103216205A (en) | 2012-04-18 | 2012-04-18 | Adjustable orifice sealing device for geological drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216205A true CN103216205A (en) | 2013-07-24 |
Family
ID=48814322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101131665A Pending CN103216205A (en) | 2012-04-18 | 2012-04-18 | Adjustable orifice sealing device for geological drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103216205A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1190976A (en) * | 1966-07-29 | 1970-05-06 | Nac De Engenharia Civil Lab | Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole |
| CN1858397A (en) * | 2006-06-09 | 2006-11-08 | 徐元信 | Diameter adjustable blowout preventer for oil field |
| US20070199693A1 (en) * | 2006-02-17 | 2007-08-30 | Innicor Subsurface Technologies Inc | Eutectic material-based seal element for packers |
| CN201738865U (en) * | 2010-06-25 | 2011-02-09 | 中国石油天然气股份有限公司 | Shaft annular space hydraulic expansion packer |
| CN202064870U (en) * | 2011-03-06 | 2011-12-07 | 关鑫 | Cavity pressure self-regulating assembly type polished rod seal box |
-
2012
- 2012-04-18 CN CN2012101131665A patent/CN103216205A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1190976A (en) * | 1966-07-29 | 1970-05-06 | Nac De Engenharia Civil Lab | Improvements in or relating to Apparatus for Determining the Deformability of Soil in situ in a Borehole |
| US20070199693A1 (en) * | 2006-02-17 | 2007-08-30 | Innicor Subsurface Technologies Inc | Eutectic material-based seal element for packers |
| CN1858397A (en) * | 2006-06-09 | 2006-11-08 | 徐元信 | Diameter adjustable blowout preventer for oil field |
| CN201738865U (en) * | 2010-06-25 | 2011-02-09 | 中国石油天然气股份有限公司 | Shaft annular space hydraulic expansion packer |
| CN202064870U (en) * | 2011-03-06 | 2011-12-07 | 关鑫 | Cavity pressure self-regulating assembly type polished rod seal box |
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Application publication date: 20130724 |