CN103527084B - Gravity directional type vertical drilling slope-preventing device - Google Patents
Gravity directional type vertical drilling slope-preventing device Download PDFInfo
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- CN103527084B CN103527084B CN201310351855.4A CN201310351855A CN103527084B CN 103527084 B CN103527084 B CN 103527084B CN 201310351855 A CN201310351855 A CN 201310351855A CN 103527084 B CN103527084 B CN 103527084B
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- tubulose
- guide cylinder
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- alloy steel
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Abstract
A kind of gravity directional type vertical drilling slope-preventing device, it mainly comprises tubulose mandrel, tubulose gravity guide cylinder, concentric bearings, capacity eccentric bearing, sealing ring, eccentric cushion block, stabilizer and increasing rub band, its tubulose gravity guide cylinder is divided equally into two halves, the material of half is high-density alloy steel, second half is low-density alloy steel, and by welding or bonding together, this guide cylinder and tubulose mandrel are connected together by concentric bearings and capacity eccentric bearing, the inner ring having concentric bearings is wherein overlapped respectively in the both sides of tubulose mandrel, the inner ring of the capacity eccentric bearing of intermediate sleeve oriented well flash bias, the outer ring of above-mentioned concentric bearings and capacity eccentric bearing is located in above-mentioned guide cylinder, the barrel of this guide cylinder is provided with cushion block, sealing ring is provided with between its two ends and tubulose mandrel, its outer round surface two ends are provided with stabilizer, this stabilizer tube shape gravity guide cylinder high-density alloy steel while be provided with increasing and rub band.Structure of the present invention is simple, with low cost, good stability, effectively can control hole deviation.
Description
Technical field
The present invention relates to a kind of drilling tool, particularly a kind of vertical drilling inclination-proof drilling well apparatus.
Background technology
In oil and gas well drilling and geological drilling process, due to pendage and the reason such as formation anisotropy and drill stem buckling, generally all the peupendicular hole of design is drilled to three-dimensional crooked hole.What be drilled to is larger with the difference of design, and effect is poorer.Wherein an index is exactly hole angle, and the hole angle of the peupendicular hole of design is all zero degree.For this reason, the hole angle of the well be drilled to is the smaller the better.In order to reduce hole angle, be used various anti-deviation device.
Existing anti-deviation device has pendulum assembly, tower drilling tool, packed hole assembly, off-axis drilling tool, steering drilling tool and vertical drilling system.Pendulum assembly has anti-oblique and well straightening effect, but drilling speed is too slow.Tower drilling tool also has certain anti-oblique effect, but runs into the stratum that pendage is large and formation anisotropy is strong, just can not meet and has needed.Packed hole assembly make well become straight in effect better, but make well become vertical in effect poor.Off-axis drilling tool has certain anti-oblique and well straightening effect, but easy drillling tool twisting off.Can drilling straight-hole with steering drilling tool, but drilling speed is comparatively slow, and hole curvature is larger.Vertical drilling system drilling straight-hole effect is better, but technology is monopolized by foreign corporation always, and cost is too high.
Summary of the invention
The object of the present invention is to provide that a kind of structure is simple, with low cost, good stability, can the gravity directional type vertical drilling slope-preventing device of effective inclining prevention.
The present invention mainly comprises tubulose gravity guide cylinder, tubulose mandrel, concentric bearings, capacity eccentric bearing and stabilizer.Wherein, tubulose mandrel is made up of alloy steel, and upper end is connected with female joint, and lower end is connected with male joint, and female joint is used for being connected with upper drilling string, and male joint is used for being connected with lower drilling string or drill bit.Tubulose gravity guide cylinder is made up of two kinds of materials, this tubulose gravity guide cylinder is by crossing the plane either bisects of axis into two, wherein the material of half is high-density alloy steel, and second half material is low-density alloy steel, between the two by welding or bonding connection together.Tubulose gravity guide cylinder and tubulose mandrel are connected together by concentric bearings and capacity eccentric bearing, wherein on tubulose mandrel, both sides overlap the inner ring having concentric bearings respectively, the inner ring of the capacity eccentric bearing of intermediate sleeve oriented tubulose gravity guide cylinder low-density alloy steel side bias, the outer ring of above-mentioned concentric bearings and capacity eccentric bearing is located in tubulose gravity guide cylinder, and the barrel corresponding with capacity eccentric bearing outer ring of tubulose gravity guide cylinder high-density alloy steel is provided with cushion block.Between the two ends and tubulose mandrel of tubulose gravity guide cylinder, be provided with sealing ring, be provided with stabilizer at tubulose gravity guide cylinder outer round surface two ends, the increasing that is provided with of this stabilizer tube shape gravity guide cylinder high-density alloy steel rubs band.
The present invention designs according to deflecting control theory.Reduce hole deviation, drill bit and the lower borehole wall will be made to have enough large active force or/and the sensing of drill bit is turned to low limit, and reach this object, first will determine low limit, and second makes drill bit and the lower borehole wall have enough large active force or/and the sensing of drill bit is turned to low limit.Tubulose gravity guide cylinder half of the present invention is high-density alloy steel, second half is low-density alloy, and under gravity, the half of high-density alloy steel is in the low limit of this device, and the half of low-density alloy is in flash.Under the capacity eccentric bearing of well flash bias makes free state, become bending mandrel for straight mandrel in the middle part of this tubulose gravity guide cylinder, the sensing of drill bit can be made to turn to low limit or/and drill bit and the lower borehole wall have enough large active force.Bearing can allow mandrel rotate to drive drill bit fractured rock, and gravity guide cylinder non rotating.Sealing ring can stop in drilling fluid entering tool.When hole angle is very little, although the moment of torsion transmitted by sealing ring and bearing is little, gravity guide cylinder also may be driven to rotate.In order to reduce this probability, being provided with increasing on the low limit of stabilizer and rubbing band.Even if gravity guide cylinder rotates, neither at the uniform velocity, the time being in anti-oblique state is longer, still anti-oblique generally.
The present invention compared with prior art tool has the following advantages:
(1) structure is simple, with low cost.
(2) rotating speed is not affected, good stability.
(3) good endurance, can control hole deviation effectively.
Accompanying drawing explanation
Fig. 1 is structural representation sketch of the present invention.
Fig. 2 is the sectional drawing of Figure 1A-A.
Detailed description of the invention
In the gravity directional type vertical drilling slope-preventing device schematic diagram shown in Fig. 1 and Fig. 2, tubulose mandrel 1 is made up of alloy steel, and upper end is connected with female joint 6, and lower end is connected with male joint 5, female joint is used for being connected with upper drilling string, and male joint is used for being connected with lower drilling string or drill bit.Tubulose gravity guide cylinder 2 is by crossing the plane either bisects of axis into two, and wherein the material of half is high-density alloy steel 11, and second half material is low-density alloy steel 12, welds together between the two.Tubulose gravity guide cylinder and tubulose mandrel are connected together by concentric bearings 3 and capacity eccentric bearing 4, wherein on tubulose mandrel, both sides overlap the inner ring having concentric bearings respectively, the inner ring of the capacity eccentric bearing of intermediate sleeve oriented tubulose gravity guide cylinder low-density alloy steel side bias, the outer ring of above-mentioned concentric bearings and capacity eccentric bearing is located in tubulose gravity guide cylinder, and the barrel corresponding with capacity eccentric bearing outer ring of tubulose gravity guide cylinder high-density alloy steel is welded with a cushion block 8.Between the two ends and tubulose mandrel of tubulose gravity guide cylinder, be provided with sealing ring 7, be provided with stabilizer 9 at tubulose gravity guide cylinder outer round surface two ends, the increasing that is provided with of this stabilizer tube shape gravity guide cylinder high-density alloy steel rubs band 10.
During use, female joint is connected with drill string, and male joint is connected with drill bit, G.I.H, rotation drilling tool, add the pressure of the drill, capacity eccentric bearing is placed in the state to well flash bias by tubulose gravity guide cylinder all the time, promotes drill bit and contacts or/and bit heading is downward-sloping with the lower borehole wall; Tubulose mandrel rotates and transmits the pressure of the drill, drives drill bit to creep into, realizes drop angle.
Claims (1)
1. a gravity directional type vertical drilling slope-preventing device, it mainly comprises tubulose mandrel, tubulose gravity guide cylinder, concentric bearings, capacity eccentric bearing, male joint, female joint, sealing ring, eccentric cushion block, stabilizer and increasing rub band, it is characterized in that: its tubulose mandrel is made up of alloy steel, upper end is connected with female joint, lower end is connected with male joint, tubulose gravity guide cylinder is made up of two kinds of materials, this tubulose gravity guide cylinder is by crossing the plane either bisects of axis into two, wherein the material of half is high-density alloy steel, second half material is low-density alloy steel, between the two by welding or bonding connection together, tubulose gravity guide cylinder and tubulose mandrel are connected together by concentric bearings and capacity eccentric bearing, the inner ring having concentric bearings is wherein overlapped respectively in the both sides of tubulose mandrel, the inner ring of the capacity eccentric bearing of intermediate sleeve oriented tubulose gravity guide cylinder low-density alloy steel side bias, the outer ring of above-mentioned concentric bearings and capacity eccentric bearing is located in tubulose gravity guide cylinder, at tubulose gravity guide cylinder high-density alloy steel while the barrel corresponding with capacity eccentric bearing outer ring is provided with eccentric cushion block, sealing ring is provided with between the two ends and tubulose mandrel of tubulose gravity guide cylinder, stabilizer is provided with at tubulose gravity guide cylinder outer round surface two ends, this stabilizer tube shape gravity guide cylinder high-density alloy steel while be provided with increasing and rub band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310351855.4A CN103527084B (en) | 2013-08-13 | 2013-08-13 | Gravity directional type vertical drilling slope-preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310351855.4A CN103527084B (en) | 2013-08-13 | 2013-08-13 | Gravity directional type vertical drilling slope-preventing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103527084A CN103527084A (en) | 2014-01-22 |
| CN103527084B true CN103527084B (en) | 2016-01-06 |
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ID=49929393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310351855.4A Expired - Fee Related CN103527084B (en) | 2013-08-13 | 2013-08-13 | Gravity directional type vertical drilling slope-preventing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103527084B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610158B (en) * | 2020-12-14 | 2022-09-13 | 中国石油大学(华东) | Intelligent vertical drilling system and drilling method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133418A (en) * | 1991-01-28 | 1992-07-28 | Lag Steering Systems | Directional drilling system with eccentric mounted motor and biaxial sensor and method |
| CN1243904C (en) * | 2003-01-22 | 2006-03-01 | 石油大学(北京) | Equipment prevents a vertical drilling well from deflexion |
| CN101025075B (en) * | 2006-02-21 | 2011-03-16 | 中国石油大学(北京) | Automatic inclination-proof drilling well apparatus |
| CN101451425A (en) * | 2007-12-07 | 2009-06-10 | 中国石化集团胜利石油管理局钻井工艺研究院 | Shunt type automatic vertical well drilling tool suitable for gas drilling |
| CN101250982B (en) * | 2008-04-02 | 2011-12-07 | 刘宝林 | Mechanical automatic vertical drilling tool |
| CN201254952Y (en) * | 2008-04-22 | 2009-06-10 | 中国石化集团胜利石油管理局钻井工艺研究院 | Automatic vertical drilling tool by utilizing aerodynamics |
| CN101839113B (en) * | 2010-05-06 | 2012-07-04 | 中国石油集团钻井工程技术研究院 | Underground deviation-correcting energy extraction device |
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2013
- 2013-08-13 CN CN201310351855.4A patent/CN103527084B/en not_active Expired - Fee Related
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| CN103527084A (en) | 2014-01-22 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190813 |