CN201521245U - Vertical drill hole gyroscope eccentric deviation correction device - Google Patents
Vertical drill hole gyroscope eccentric deviation correction device Download PDFInfo
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- CN201521245U CN201521245U CN2009202542042U CN200920254204U CN201521245U CN 201521245 U CN201521245 U CN 201521245U CN 2009202542042 U CN2009202542042 U CN 2009202542042U CN 200920254204 U CN200920254204 U CN 200920254204U CN 201521245 U CN201521245 U CN 201521245U
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Abstract
The utility model aims at providing a vertical drill hole gyroscope eccentric deviation correction device, and relates to the technical field of vertical hole drilling equipment. The device is provided with a cylinder-shaped eccentric wedge, the side surface of the lower end of which is provided with a wedge surface opening which has a certain length; the inner side wall of the lower end of the eccentric wedge is provided with an inclined smooth guide wall; the cylinder-shaped eccentric wedge is internally provided with a cylinder-shaped locator, and a gap is arranged between the cylinder-shaped eccentric wedge and the cylinder-shaped locator; the side wall of the cylinder-shaped locator is provided with a positioning key; the cylinder-shaped locator is internally provided with a downhole gyro-orientator which is connected with a locating boot at the lower part; and the locating boot is provided with a locating hole matched with the positioning key. The vertical drill hole gyroscope eccentric deviation correction device has simple structure and convenient use, can well control the deflection range of a drill hole, ensures the drilling locus of the drill hole to return a design range again, and is not influenced by the water pressure and flow speed of drilling fluid, thus improving the drilling accuracy of minor-caliber drilling and being wide in application scope.
Description
Technical field
The utility model relates to upright opening drilling equipment technical field.
Background technology
At present deviation correcting technology mainly adopts helicoid hydraulic motor to carry out well straightening, helicoid hydraulic motor be a kind of be power with the drilling fluid, the pressure of well liquid is changed into the power of down-hole equipment, thereby realizes drillng operation.This method has very high requirement to the pressure and the flow of drilling fluid, does not creep into required power if the power that the little well hydraulic coupling of boring aperture is produced just reaches.Helicoid hydraulic motor diameter commonly used at present more than 100mm, is difficult to control for creeping into the boring correction of diameter less than 100mm mostly.Because the probing precision of small-bore probing is low, is difficult to draw a circle to approve exactly position, the scale of ore removal and accurate ore reserve is provided for mine locating boring.For the curtain-grouting hole, can not calculate the grout spreading range of injected hole exactly, so the curtain-grouting effect is relatively poor.So influenced the economic benefit and the economic benefit of mine locating boring.
Summary of the invention
The purpose of this utility model provides the eccentric well straightening device of a kind of vertical drilling gyro, it is simple in structure, easy to use, use its deflection ranges of keyhole well, the drilling trace of boring is come back in the scope of design, be not subjected to the influence of drilling fluid hydraulic pressure and flow velocity, improve the probing precision of small-bore probing; Can draw a circle to approve position, the scale of ore removal more accurately for mine locating boring, accurate ore reserve is provided; For the curtain-grouting hole, owing to can control the deflection ranges of inlet well; Can more accurately calculate the grout spreading range of injected hole, ensure the realization of curtain-grouting effect, be specially adapted to the probing work of small-bore upright opening, effectively improve its economic benefit and economic benefit.
Main technical schemes of the present utility model is: the eccentric well straightening device of a kind of vertical drilling gyro, it is characterized in that having the eccentric wedge of tubular, eccentric wedge lower end side is provided with the wedge surface opening, and opening has certain-length, and eccentric wedge lower end inside wall is provided with the level and smooth guide wall of tilting; Be provided with the tubular locator in the eccentric wedge of tubular, has the gap between the eccentric wedge of tubular locator and tubular, locator is used for connecting and has a gyrocompassing instrument of locating boots, the inside wall of tubular locator is provided with positioning key, in tubular locator 6, connect and have the down-hole gyrocompassing instrument of locating boots, positioning key and location boots grappling make eccentric wedge consistent with gyrocompassing instrument orientation.
The upper end of the eccentric wedge of described tubular can have the syndeton with top rod.
Described wedge surface opening edge edge can be parallel with the tubular bus that the eccentric wedge of tubular is arranged, or not parallel.
The level and smooth guide wall of described tilting can be tapered plane or skew surface.
Good effect of the present utility model is: can effectively solve problems of the prior art, it is simple in structure, easy to use, use its deflection ranges of keyhole well, the drilling trace of boring is come back in the scope of design, be not subjected to the influence of drilling fluid hydraulic pressure and flow velocity, improve the probing precision of small-bore probing; Can draw a circle to approve position, the scale of ore removal more accurately for mine locating boring, accurate ore reserve is provided; For the curtain-grouting hole, owing to can control the deflection ranges of inlet well; Can more accurately calculate the grout spreading range of injected hole, ensure the realization of curtain-grouting effect, be specially adapted to the probing work of small-bore upright opening, effectively improve its economic benefit and economic benefit.
Description of drawings
Fig. 1 is the structural representation before the utility model duty is crept into.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the local A structure for amplifying schematic diagram among Fig. 1.
Fig. 4 is the structural representation of the utility model duty when creeping into.
Fig. 5 is drilling track and direction of closure angle plane figure.
Among Fig. 1～Fig. 5,1. ground installation, 2 drilling rods, 3. gyrocompassing instrument (or down-hole instrument), the 4. borehole wall, 5. eccentric wedge, 6. locator, 7. location boots, part fill up in 8. eccentric wedge bottom, 9. rectify a deviation drilling tool, 10. positioning key.
The specific embodiment
Be described further below in conjunction with drawings and Examples, but not as to qualification of the present utility model.
Referring to Fig. 1, Fig. 4, the eccentric well straightening device of this vertical drilling gyro is characterized in that having the eccentric wedge 5 of tubular, and eccentric wedge lower end side is provided with the wedge surface opening, and opening has certain-length, and eccentric wedge 5 lower end sidewalls are provided with the level and smooth guide wall 8 of tilting; Has tubular locator 6 in the eccentric wedge 5 of tubular, eccentric 5 of the wedges of tubular locator 6 and tubular have the gap, the sidewall of tubular locator 6 is provided with positioning key 10, in tubular locator 6, connect and have the down-hole gyrocompassing instrument 3 of locating boots 7, the location boots are provided with the hole that can cooperate with above-mentioned positioning key, by the grappling of positioning key 10, make eccentric wedge consistent with gyrocompassing instrument orientation with location boots 7.The upper end of the eccentric wedge 5 of tubular has the syndeton with top rod, as screw thread; Described wedge surface opening edge is along parallel with the tubular bus that the eccentric wedge 5 of tubular is arranged, and the level and smooth guide wall 8 of described tilting is a tapered plane.
Using operating procedure of the present utility model as follows, is example with φ 75mm diameter vertical drilling:
1, the selection of well straightening position
Carry out deviational survey after creeping into certain depth,, then need to carry out well straightening if the inclination angle was bigger at the bottom of the boring offset distance was about to exceed design offset distance or boring hole.Well straightening is operated in the basement rock to be carried out, and the position is chosen in complete, the fine and close hard location of formation lithology.
2, the making of eccentric wedge
Eccentric wedge adopts φ 75mm drilling rod to make, and wedge surface length is controlled at 2-2.5m, and eccentric wedge bottom end opening accounts for 2/3 of drilling rod, and top end opening accounts for 1/3 of drilling rod, opening from the bottom to the top even variation.Eccentric wedge bottom has been filled up part and has been adopted interior the subsides and the outer dual mode that pastes, the height that has filled up is wanted slowly level and smooth and is risen, and has filled up length 1-1.5m, with each connecting portion firm welding of electric weld handle, using emery wheel level and smooth, do not allow to occur situations such as burr, step, projection the inner polishing of eccentric wedge.
Eccentric wedge surface thickness is the key factor that is related to the well straightening effect in the eccentric well straightening technology of gyro, has formulated the eccentric wedge of different-thickness according to different situations, mainly is divided into following several situation: (1) is as inclination angle during greater than 1 °, wedge surface thickness 30-35mm; (2) when the inclination angle less than 1 ° during greater than 0.5 °, wedge surface thickness 20-30mm; (3) when inclination angle during less than 0.5 °, wedge surface thickness 15-20mm; (4) at inswept well, handled accident and used cement to annotate and carried out well straightening because the boring borehole wall is destroyed, wedge surface thickness increases a grade.
3, the making of locator and installation
Locator adopts the nylon sebific duct to process, outside dimension 58mm, and internal diameter size 47mm, long 200mm, positioning key are fixed on the middle part of locator.To polish to the inwall of locator after processing, prevent that little burr from influencing the location boots and going into boots.Locator is installed in the top rod of eccentric wedge upper shed, the position of positioning key is on the center line of eccentric wedge opening surface, because the drilling rod specification is slightly variant, make the internal diameter of drilling rod not too identical, the drilling rod that internal diameter is big slightly can twine a small amount of adhesive tape at the locator outer wall, with increase constant intensity and with the concentricity of drilling rod, avoid rocking, and and live with the rivet riveting between the drilling rod, will be after fixing wiped clean such as your residual plastics bits of locator, iron filings.
4, eccentric wedge transfers
After eccentric wedge is made installation positioner, connect φ 75mm drilling rod and transfer to foot of hole.Calculated the length of hole depth, eccentric wedge and drilling rod before transferring, guarantee eccentric wedge can be smoothly well straightening position at the bottom of the hole down.Transferring in the process junction button between drilling rod will tighten, and avoids in the well straightening process because the rotation of well straightening drilling rod drives φ 75mm drilling rod rotates, and changes the orientation of eccentric wedge.
5, choosing of well straightening orientation
The orientation was analyzed jointly with the method that inclination angle at the bottom of the hole combines at the bottom of the choosing of well straightening orientation adopted boring direction of closure, hole, determined the well straightening directional bearing.Main method has following several: when inclination angle at the bottom of the hole during less than 0.5 °, the well straightening directional bearing is determined according to the direction of closure (1); (2) when inclination angle at the bottom of the hole greater than 0.5 ° during less than 1 °, the well straightening directional bearing according to the hole at the bottom of the general bearing of orientation and direction of closure determine; (3) when inclination angle at the bottom of the hole during greater than 1 °, the well straightening directional bearing according to the hole at the bottom of the orientation determine, if when orientation and direction of closure differ big at the bottom of the hole (greater than 50 °), 10-20 ° of well straightening directional bearing direction of closure rotation in the past.
6, eccentric wedge orientation
After eccentric wedge is transferred at the bottom of the hole, the gyrocompassing instrument that is connected with the location boots is put in the φ 75mm drilling rod, transfer to the drilling rod bottom, the location boots are entered in the locator, observe the orientation of eccentric wedge by locator, rotate the orientation that drilling rod changes eccentric wedge in the aperture, make eccentric wedge orientation reach the orientation of well straightening design.Fix drilling rod in the aperture, go up inclinometer.In drilling rod, be lowered to bottom band screw tap φ 42mm drilling rod, with the nylon locator taking-up of eccentric wedge upper end.
7, the well straightening drilling tool creeps into
The well straightening drilling tool adopts φ 60mm drilling tool to make, length 1.5-2m, and top is connected with φ 42mm drilling rod, transfers to φ 75mm drilling rod bottom.Strict control is crept in the well straightening drilling process rotating speed and pressure make the well straightening drilling tool slowly by eccentric wedge, creep into 3-5m after, promote well straightening drilling tool and eccentric wedge.The φ 75mm drilling tool that is lowered to the correcting of front end band in boring carries out reaming, correcting length 20-30cm.Reaming is removed the front end correcting after finishing, and normally creeps into, and for keeping the well straightening effect, speed and the pressure that creeps into can not be improved in the 20m once in the well straightening position.Creep into to the following 25-30m in well straightening position, carry out drillhole inclination survey, check the well straightening effect, observe the variation of its inclination angle and skew direction,, carry out well straightening once more otherwise repeat said method if effective the continuation creeps into.
8, method application example
Boring K301 design hole depth 420m, the maximum offset distance 2.4m of design boring.Carried out deviational survey when creeping into to 145m, find that the offset distance of boring is about to reach the maximum offset distance of design, and inclination angle (gradient) has been bigger at the bottom of the boring hole, decision is to its well straightening.According to said method, eccentric wedge wedge surface Thickness Design is 31cm, directional bearing is designed to 212 ° 32 ° of opposite directions, it has been carried out well straightening work, crept into to 170m and carried out deviational survey inspection well straightening effect, found that the inclination angle of boring diminishes, the increase tendency of offset distance slows down, but because too big variation does not take place bore direction, offset distance is still also increasing, and decision is carried out the well straightening second time at the 170m place.The wedge surface Thickness Design is 25cm, orientation direction is designed to 187 ° opposite direction 7 degree, carried out well straightening for the second time, creep into to 200m and carry out deviational survey inspection well straightening effect, variation has taken place in the orientation of creeping into of finding boring, offset distance begins to diminish, and all in the designing requirement scope, well straightening has obtained extraordinary effect up to whole hole offset distance.
As shown in Figure 5, after eccentric wedge is reserved the orientation, gyrocompassing instrument and locator are taken out, in φ 75mm drilling rod, be lowered to φ 60mm well straightening drilling tool, filled up squeezing action partly, change the azimuth tendency of boring, reach the purpose of well straightening by eccentric wedge bottom.After 3-5m is crept in well straightening, take out φ 75mm drilling rod and φ 60mm well straightening drilling tool, adopt the φ 75mm drilling tool of bottom band correcting drill bit to carry out reaming.Reaming is removed the correcting drill bit after finishing, and adopts normal φ 75mm drilling tool to creep into.
Adopt the eccentric well straightening method of gyro to can be good at the deflection ranges of keyhole, improve the probing precision of small-bore probing.Can draw a circle to approve position, the scale of ore removal more accurately for mine locating boring, accurate ore reserve is provided.Particularly,, can more accurately calculate the grout spreading range of injected hole, ensure the realization of curtain-grouting effect by the deflection ranges of control inlet well for the curtain-grouting hole.
Claims (4)
1. the eccentric well straightening device of vertical drilling gyro is characterized in that having the eccentric wedge (5) of tubular, and eccentric wedge (5) lower end side is provided with the wedge surface opening, and opening has certain-length, and eccentric wedge (5) lower end inside wall is provided with the level and smooth guide wall of tilting (8); Has tubular locator (6) in the eccentric wedge of tubular (5), has the gap between the eccentric wedge of tubular locator (6) and tubular (5), the sidewall of tubular locator (6) is provided with positioning key (10), in tubular locator (6), connect the down-hole gyrocompassing instrument (3) that has location boots (7), positioning key (10) and location boots (7) grappling make eccentric wedge consistent with gyrocompassing instrument orientation.
2. the eccentric well straightening device of vertical drilling gyro according to claim 1, the upper end that it is characterized in that the eccentric wedge of described tubular (5) has the syndeton with top rod.
3. the eccentric well straightening device of vertical drilling gyro according to claim 1 and 2 is characterized in that described wedge surface opening edge is along parallel with the tubular bus that the eccentric wedge of tubular (5) is arranged.
4. the eccentric well straightening device of vertical drilling gyro according to claim 3 is characterized in that the level and smooth guide wall of described tilting (8) is tapered plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202542042U CN201521245U (en) | 2009-10-28 | 2009-10-28 | Vertical drill hole gyroscope eccentric deviation correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202542042U CN201521245U (en) | 2009-10-28 | 2009-10-28 | Vertical drill hole gyroscope eccentric deviation correction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521245U true CN201521245U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202542042U Expired - Fee Related CN201521245U (en) | 2009-10-28 | 2009-10-28 | Vertical drill hole gyroscope eccentric deviation correction device |
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| Country | Link |
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| CN (1) | CN201521245U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140913A (en) * | 2011-05-13 | 2011-08-03 | 重庆华渝电气仪表总厂 | Small-diameter directional gyro inclinometer for drilling |
| CN102705140A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN102788575A (en) * | 2012-08-29 | 2012-11-21 | 中国水电顾问集团中南勘测设计研究院 | Movable inversely drooping anchor block assembly |
| CN105422003A (en) * | 2015-11-19 | 2016-03-23 | 深圳市钻通工程机械股份有限公司 | Laser guidance straight-keeping drilling equipment |
| WO2020234859A1 (en) * | 2019-05-21 | 2020-11-26 | Hy-Tech Drilling Ltd. | Diamond drilling hole correction tool |
-
2009
- 2009-10-28 CN CN2009202542042U patent/CN201521245U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140913A (en) * | 2011-05-13 | 2011-08-03 | 重庆华渝电气仪表总厂 | Small-diameter directional gyro inclinometer for drilling |
| CN102705140A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN102705140B (en) * | 2012-05-30 | 2014-08-20 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN102788575A (en) * | 2012-08-29 | 2012-11-21 | 中国水电顾问集团中南勘测设计研究院 | Movable inversely drooping anchor block assembly |
| CN102788575B (en) * | 2012-08-29 | 2015-09-16 | 中国电建集团中南勘测设计研究院有限公司 | The movable anchor block assembly that falls to hang down |
| CN105422003A (en) * | 2015-11-19 | 2016-03-23 | 深圳市钻通工程机械股份有限公司 | Laser guidance straight-keeping drilling equipment |
| WO2020234859A1 (en) * | 2019-05-21 | 2020-11-26 | Hy-Tech Drilling Ltd. | Diamond drilling hole correction tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |