CN104712259A - Full mechanical bidirectional drill column shock absorber and process method - Google Patents
Full mechanical bidirectional drill column shock absorber and process method Download PDFInfo
- Publication number
- CN104712259A CN104712259A CN201310684049.9A CN201310684049A CN104712259A CN 104712259 A CN104712259 A CN 104712259A CN 201310684049 A CN201310684049 A CN 201310684049A CN 104712259 A CN104712259 A CN 104712259A
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- CN
- China
- Prior art keywords
- vibrations
- shock
- drill
- shock absorption
- damping
- 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.)
- Pending
Links
- 230000035939 shock Effects 0.000 title claims abstract description 36
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008569 process Effects 0.000 title claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 title abstract 3
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000013016 damping Methods 0.000 claims description 24
- 230000009466 transformation Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 15
- 230000002411 adverse Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 238000007790 scraping Methods 0.000 abstract 1
- 229920002545 silicone oil Polymers 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
- E21B17/076—Telescoping joints for varying drill string lengths; Shock absorbers between rod or pipe and drill bit
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a full mechanical bidirectional drill column shock absorber and a process method and belongs to the field of petroleum and natural gas drilling technology. A torque transmission and shock conversion mechanism is composed of a helical pair comprising an inner trapezoidal thread and an outer trapezoidal thread, the torque transmission and shock conversion mechanism is connected with a seal mechanism through threads, and a rotary seal and a mud scraping seal are sequentially arranged in the seal mechanism to constitute a seal cavity. A shock absorption mechanism is composed of a shock absorption barrel, a shock absorption shaft and an annular spring, and the annular spring is connected between the shock absorption barrel and the shock absorption shaft. One end of the shock absorption mechanism is connected with the torque transmission and shock conversion mechanism through threads, and the other end of the shock absorption mechanism is connected with a joint. The full mechanical bidirectional drill column shock absorber is compact in structure, can not only absorb longitudinal shock in the petroleum drilling process but also absorb circumferential twist shock in the rotary rock breaking process, is provided with mechanical shock absorption elements, and is good in shock absorption effect, wide in application range, suitable for strata with various lithological characters and hardness levels, and free of influences of work environment factors such as bottom hole temperatures.
Description
Technical field
The present invention relates to a kind of full machine two-way drill-string shock absorbers and process, belong to petroleum and natural gas drilling technology field.
Background technology
In drillng operation, due to complicated geological, formation lithology, varying hardness, usually can produce torsional pulse when breaking rock to the impact load of drill bit, the shock load of drill string and bit when hard formation creeps into.Vibrations form comprises: longitudinally vibrations and circumferential twisting vibration.Use drill-string shock absorbers can effectively suppress above-mentioned impact shock load, protection drill bit and drilling tool, extend its application life, reduces drilling well integrated cost, improves drilling well operating efficiency and improve well track precision.
Traditional drill-string shock absorbers is unidirectional damper, namely can only absorb a kind of vibrations; Only a kind of two-way drill string shock absorber is hydra-shock absorber, and its damper element is compressible silicone oil.There are the following problems for this hydraulic pressure drill-string shock absorbers: 1. owing to being liquid spring with silicone oil, and silicone oil is more responsive to temperature, causes its scope of application to be restricted, and such as when deep-well uses, its service behaviour just certainly will be affected.2. liquid spring requires strict to sealing performance, along with the wearing and tearing of sealing mechanism and the leakage loss of silicone oil in using, damping performance can be caused sharply to decline.3. because the cushioning effect of spring mechanism depends primarily on the deformation energy of spring, and the deformation energy of liquid spring is difficult to control, and thus have impact on the operating characteristic of damper.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of full machine two-way drill-string shock absorbers and process.
A kind of full machine two-way drill-string shock absorbers, the screw pair that moment of torsion transmission is become by inner trapezoidal thread, outer trapezoidal thread set with vibrations transformation mechanism is formed, moment of torsion transmission and vibrations transformation mechanism and sealing mechanism between be threaded connection, have rotatory sealing in sealing mechanism successively and scrape mud sealing form closed chamber; Damping is made up of damper cylinder body, elastic axis, ring spring, is connected ring spring between damper cylinder body with elastic axis; Damping one end is connected with vibrations transformation mechanism with moment of torsion transmission by screw thread, and the damping other end is connected with joint.
The mechanical shock absorption element of damping is: helical spring, disk spring, ring spring or metal spring.
A kind of full machine two-way drill string shock absorption process method, containing following steps;
Torque-transmitting mechanisms is connected with upper drilling string, and joint is connected with lower drilling string or drill bit; The moment of torsion of drill string is delivered to joint by moment of torsion transmission and the screw pair of vibrations transformation mechanism, is then delivered to drill bit, drives bit; The pressure of the drill of drill string is delivered to joint and drill bit by moment of torsion transmission and vibrations transformation mechanism, damping, realizes broken rock drilling depth; While by the operation torque of drill string and work load transfer to drill bit, in drilling process, drill bit breaks the longitudinal direction vibrations that rock produces and is directly absorbed by the damper element of damping or slow down, simultaneously, circumference is reversed the vibrations produced and is converted into longitudinal vibrations by the screw pair shaking transformation mechanism, then absorbed by the damper element of damping, thus the vibrations eliminating all modes are to the adverse effect of drill string and drill bit.
The invention has the advantages that: a kind of mechanism completes moment of torsion transmission and vibrations conversion two kinds of functions simultaneously, compact conformation; The longitudinal direction vibrations in Process of Oil Well Drilling can not only be absorbed, and circumferential torsional shaking when rotating broken rock can be absorbed; Mechanical type damper element, good damping effect, applied widely, be applicable to various lithology, hardness stratum and not by the impact of the Working Environments such as bottom hole temperature (BHT).
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is structural representation of the present invention.
Fig. 2 is moment of torsion transmission of the present invention and the structural representation shaking transformation mechanism.
Fig. 3 is damping schematic diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Detailed description of the invention
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1, Figure 2, Figure 3 shows, a kind of full machine two-way drill-string shock absorbers, is made up of moment of torsion transmission and component such as shaking transformation mechanism 1, sealing mechanism 2, damping 3 and joint 4.
The screw pair that moment of torsion transmission is made up of inner trapezoidal thread 5, outer trapezoidal thread 6 with vibrations transformation mechanism 1 is formed, moment of torsion transmission is threadingly connected with between sealing mechanism 2 with vibrations transformation mechanism 1, there is rotatory sealing in sealing mechanism 2 successively and scrape mud sealing, form closed chamber, note lubrication oil in chamber, realize the lubrication of screw pair; Damping 3 is made up of damper cylinder body 7, elastic axis 8, ring spring 9, is connected ring spring 9 between damper cylinder body 7 with elastic axis 8;
Damping 3 threadingly one end is connected with vibrations transformation mechanism 1 with moment of torsion transmission, and damping 3 other end is connected with joint 4.
A kind of full machine two-way drill-string shock absorbers, has moderate finite deformation energy and reliable operation, operating characteristic does not affect by working environments such as bottom hole temperature (BHT)s, all has in longitudinal direction, circumferential both direction the drill-string shock absorbers of cushioning effect.
During use, moment of torsion transmission is connected with upper drilling string with vibrations transformation mechanism 1, and joint 4 is connected with lower drilling string or drill bit.The moment of torsion of drill string is delivered to joint 4 by the screw pair that trapezoidal thread forms, and is then delivered to drill bit, drives bit; The pressure of the drill of drill string is delivered to joint 4 and drill bit by moment of torsion transmission and vibrations transformation mechanism 1, damping 3, realizes broken rock drilling depth.While by the operation torque of drill string and work load transfer to drill bit, in drilling process, drill bit breaks the longitudinal direction vibrations that rock produces and is directly absorbed by the ring spring of damping 3 or slow down, simultaneously, circumference is reversed the vibrations produced and is converted into longitudinal vibrations by the trapezoidal thread shaking transformation mechanism 1, then absorbed by the ring spring of damping 3, thus eliminate the adverse effect of all vibrations to drill string and drill bit.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (3)
1. a full machine two-way drill-string shock absorbers, it is characterized in that the screw pair that moment of torsion transmission and vibrations transformation mechanism are become by inner trapezoidal thread, outer trapezoidal thread set is formed, moment of torsion transmission and vibrations transformation mechanism and sealing mechanism between be threaded connection, have rotatory sealing in sealing mechanism successively and scrape mud sealing form closed chamber; Damping is made up of damper cylinder body, elastic axis, ring spring, is connected ring spring between damper cylinder body with elastic axis; Damping one end is connected with vibrations transformation mechanism with moment of torsion transmission by screw thread, and the damping other end is connected with joint.
2. the full machine two-way drill-string shock absorbers of one according to claim 1, is characterized in that the mechanical shock absorption element of damping is: helical spring, disk spring, ring spring or metal spring.
3. a full machine two-way drill string shock absorption process method, is characterized in that containing following steps;
Torque-transmitting mechanisms is connected with upper drilling string, and joint is connected with lower drilling string or drill bit; The moment of torsion of drill string is delivered to joint by moment of torsion transmission and the screw pair of vibrations transformation mechanism, is then delivered to drill bit, drives bit; The pressure of the drill of drill string is delivered to joint and drill bit by moment of torsion transmission and vibrations transformation mechanism, damping, realizes broken rock drilling depth; While by the operation torque of drill string and work load transfer to drill bit, in drilling process, drill bit breaks the longitudinal direction vibrations that rock produces and is directly absorbed by the damper element of damping or slow down, simultaneously, circumference is reversed the vibrations produced and is converted into longitudinal vibrations by the screw pair shaking transformation mechanism, then absorbed by the damper element of damping, thus the vibrations eliminating all modes are to the adverse effect of drill string and drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684049.9A CN104712259A (en) | 2013-12-13 | 2013-12-13 | Full mechanical bidirectional drill column shock absorber and process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684049.9A CN104712259A (en) | 2013-12-13 | 2013-12-13 | Full mechanical bidirectional drill column shock absorber and process method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712259A true CN104712259A (en) | 2015-06-17 |
Family
ID=53411940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310684049.9A Pending CN104712259A (en) | 2013-12-13 | 2013-12-13 | Full mechanical bidirectional drill column shock absorber and process method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712259A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593868A (en) * | 2020-12-10 | 2021-04-02 | 北京科技大学 | Petroleum drill string shock absorber |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998443A (en) * | 1975-02-18 | 1976-12-21 | Edwin A. Anderson | Multidirectional shock absorbing device |
| EP0033405A1 (en) * | 1980-02-01 | 1981-08-12 | Well Control, Inc. | Tension shock absorber device |
| DE19716999C1 (en) * | 1997-04-23 | 1998-07-02 | Tanke Oil Field Dev Gmbh | Hydraulic compensator isolating forces between long sections of drill string in deep drilling |
| CN101743417A (en) * | 2007-07-16 | 2010-06-16 | 特纳瑞斯连接股份公司 | Threaded joints with elastic sealing rings |
| CN202706929U (en) * | 2012-06-21 | 2013-01-30 | 中国石油大学(华东) | Pressurization speeding-up system in pit |
| CN102913145A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Hydraulic mechanical drill stem damper |
| CN203081333U (en) * | 2012-11-27 | 2013-07-24 | 贵州高峰石油机械股份有限公司 | Anti-separating bi-directional hydraulic absorber |
| CN203948046U (en) * | 2013-12-13 | 2014-11-19 | 中国石油天然气集团公司 | A kind of full machine two-way drill-string shock absorbers |
-
2013
- 2013-12-13 CN CN201310684049.9A patent/CN104712259A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998443A (en) * | 1975-02-18 | 1976-12-21 | Edwin A. Anderson | Multidirectional shock absorbing device |
| EP0033405A1 (en) * | 1980-02-01 | 1981-08-12 | Well Control, Inc. | Tension shock absorber device |
| DE19716999C1 (en) * | 1997-04-23 | 1998-07-02 | Tanke Oil Field Dev Gmbh | Hydraulic compensator isolating forces between long sections of drill string in deep drilling |
| CN101743417A (en) * | 2007-07-16 | 2010-06-16 | 特纳瑞斯连接股份公司 | Threaded joints with elastic sealing rings |
| CN202706929U (en) * | 2012-06-21 | 2013-01-30 | 中国石油大学(华东) | Pressurization speeding-up system in pit |
| CN102913145A (en) * | 2012-10-29 | 2013-02-06 | 陕西联盟物流有限公司 | Hydraulic mechanical drill stem damper |
| CN203081333U (en) * | 2012-11-27 | 2013-07-24 | 贵州高峰石油机械股份有限公司 | Anti-separating bi-directional hydraulic absorber |
| CN203948046U (en) * | 2013-12-13 | 2014-11-19 | 中国石油天然气集团公司 | A kind of full machine two-way drill-string shock absorbers |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593868A (en) * | 2020-12-10 | 2021-04-02 | 北京科技大学 | Petroleum drill string shock absorber |
| CN112593868B (en) * | 2020-12-10 | 2022-03-08 | 北京科技大学 | Petroleum drill string shock absorber |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150617 |
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| RJ01 | Rejection of invention patent application after publication |