CN200958370Y - Deflection vibration reducer of drilling collar - Google Patents
Deflection vibration reducer of drilling collar Download PDFInfo
- Publication number
- CN200958370Y CN200958370Y CN 200620118214 CN200620118214U CN200958370Y CN 200958370 Y CN200958370 Y CN 200958370Y CN 200620118214 CN200620118214 CN 200620118214 CN 200620118214 U CN200620118214 U CN 200620118214U CN 200958370 Y CN200958370 Y CN 200958370Y
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- CN
- China
- Prior art keywords
- ring
- drill collar
- adaptor
- lower contact
- top connection
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a deviating drill collar damper for oil drilling, and is characterized in that an upper adaptor spherical groove (6) is arranged at the middle of an upper adaptor (1), and a lower adaptor spherical groove (7) is arranged at the relevant position of a lower adaptor (9). When the upper adaptor joins the lower adaptor, arrange a steel ball (8) into the upper adaptor spherical groove (6) and the lower adaptor spherical groove (7) to form a torque transmission structure. An upper elastic ring (2) and a lower elastic ring (10) are respectively positioned at the upper and lower jointing part of the upper adaptor and the lower adaptor. The external ring of the upper elastic ring is provided with a threaded clamping ring (3), and a thrust ring (4) is arranged on the lower part of the upper elastic ring and the threaded clamping ring. With simple structure and easy manufacturing, the deviating drill collar damper has a good vibration reduction effect.
Description
Affiliated technical field:
But the utility model relates to the deflection drill collar shock absorber that a kind of oil drilling is used, and belongs to the oil-well drilling equipment technical field.
Background technology:
In oil exploration and production drilling engineering, drill collar is the important component part of bottom hole assemblies.Its effect is to provide enough the pressure of the drill to drilling well, and guarantees to have certain surplus to make drilling rod be in extended state, thereby avoids drilling rod to occur bending and deformation, and causes the wearing and tearing of drilling rod and fractures.In the drilling process, the shaft bottom aspect be uneven and the rotation of drill bit produces laterally and extensional vibration drill string, make and produce alternating bending stress in the drill collar.Because the drill collar body is bigger than the rigidity of its threaded portion, so the drill collar bending mostly occurs at threaded portion.And screw thread itself is easy to generate stress and concentrates, and fatigue fracture easily takes place under the alternating bending stress effect damage.Usually use following three kinds of technology to prevent that the drill collar inefficacy from damaging in actual applications.
A kind of is to select suitable drill collar threads button-type.If it is improper that the screw thread of drill collar is selected, when drill collar was crooked, box thread was easy to damage.In order to prolong the application life of drill collar, the screw thread of selecting for use should make the male and female screw thread keep balance on size and intensity.By selecting suitable drill collar threads button-type,, can not effectively improve the bad working environments of drill collar threads in the down-hole though can make the application life of drill collar male and female screw thread close.
Second kind is machine and the Technology for Heating Processing of improving drill collar threads, the bigger residual tension of avoiding the drill collar inwall to produce.Improving drill collar material, the machine that improves screw thread and Technology for Heating Processing can eliminate residual tension in the drill collar, improve steel toughness, prolong its application life, but the cost of production of drill collar is increased, and heat treatment process also is difficult to strict control, so that does not reach expected effect.
The third is that method by mounting dampers on drill string reduces the drill collar vibration.Shock absorber generally is installed on the drill bit, absorbs the extensional vibration and the shock loading of slowing down drill string in the drilling process by ring spring and compressible liquid, thereby keeps normal the pressure of the drill.Help to reduce the extensional vibration of drill collar like this, damage certain effect of having played preventing that drill collar threads lost efficacy.But the structure more complicated of drill stem vibration damping device if improper use or quality problems take place causes the lower contact of shock absorber, axle nut to thread off easily, thereby makes the well that all falls such as ring spring, brings great trouble to drilling well work.
Above-mentioned three kinds prevent in the technology that drill collar threads lost efficacy to damage, preceding two kinds of vibration problems that can not fundamentally solve drill string, thereby also can't fundamentally solve the problem that drill collar threads lost efficacy to damage, then a kind of extensional vibration problem that has solved drill string to a certain extent, but the mitigation to oscillation crosswise is little, shock absorber does not directly act on drill collar threads, only plays booster action to reducing the drill collar vibration.
Summary of the invention:
The purpose of this utility model is to provide a kind of drill collar vibration of can effectively reducing, and prolongs its application life, but and is convenient to manufacture and design the deflection drill collar shock absorber of use.
The utility model is to realize above-mentioned purpose by following technical solution.
But in deflection drill collar shock absorber, be provided with top connection ball recess (6) at the middle part of top connection (1), also be provided with lower contact ball recess (7) in the relevant position of lower contact (9), when top connection engages with lower contact, steel ball (8) is placed in top connection ball recess (6) and the lower contact ball recess (7), form torque transfer arrangement.Bonding part up and down in top connection and lower contact, be respectively arranged with top elastic ring (2) and bottom elastic ring (10), be provided with thread-locking ring (3) in the outer ring of top elastic ring, be provided with thrust ring (4) in the bottom of top elastic ring and thread-locking ring.Elastic tube (11) in the middle of the centre of the overlaid bonding part of top connection and lower contact is provided with is respectively equipped with sealing ring (5) and lower seal (12) at the upper/lower terminal of middle elastic tube.
The utility model compared with prior art has following beneficial effect: but deflection drill collar shock absorber is installed between drill collar, make between the drill collar deflection certain angle relatively, deformation has just taken place in flexible member like this, thereby born the flexural stress between the drill collar threads, make the connection between the drill collar become flexible the connection, the effect of stress by bending reduces relatively; Owing to the effect of flexible member, the drill collar shock absorber can reduce the extensional vibration of drill string, has also just reduced the alternating stresses that drill collar threads produces because of vibration, thereby has prolonged the application life of drill collar simultaneously.But deflection drill collar shock absorber is simple in structure, is easy to make, and effectiveness in vibration suppression is good.
Description of drawings:
But Fig. 1 is the general structure schematic diagram of deflection drill collar shock absorber.
But Fig. 2 is the top connection structural representation of deflection drill collar shock absorber.
But Fig. 3 is the lower contact structural representation of deflection drill collar shock absorber.
In the drawings, 1. top connection, 2. top elastic ring, 3. thread-locking ring, 4. thrust ring is 5. gone up sealing ring, 6. top connection ball recess, 7. lower contact ball recess, 8. steel ball, 9. lower contact, 10. bottom elastic ring, elastic tubes in the middle of 11., 12. lower seal.
The specific embodiment:
But basis deflection drill collar shock absorber is made up of top connection (1), top elastic ring (2), thread-locking ring (3), thrust ring (4), last sealing ring (5), top connection ball recess (6), lower contact ball recess (7), steel ball (8), lower contact (9), bottom elastic ring (10), middle elastic tube (11), lower seal (12) etc.The upper end of top connection is the API internal thread of standard, can be directly connected on the external screw thread of a joint drill collar bottom.The lower end external screw thread of lower contact is connected with the internal thread of next joint drill collar upper end.Be provided with top connection ball recess (6) at the middle part of top connection, also be provided with lower contact ball recess (7) in the relevant position of lower contact, when top connection engages with lower contact, steel ball (8) is placed in top connection ball recess (6) and the lower contact ball recess (7), form torque transfer arrangement; For ease of installing, the lower contact ball recess of lower contact is shaped on guide groove.Be installed in steel ball in the ball recess with moment of torsion by top connection to the lower contact transmission, the pressure of the drill is mainly transmitted by the bonding surface of upper and lower joint.In the bonding part up and down of top connection and lower contact, be respectively arranged with top elastic ring (2) and bottom elastic ring (10), upper and lower two elastic rings play buffering and flexible control action to banking motion.Elastic tube (11) in the middle of the centre of the overlaid bonding part of top connection and lower contact is provided with is respectively equipped with sealing ring (5) and lower seal (12) at the upper/lower terminal of middle elastic tube.Be provided with thread-locking ring (3) in the outer ring of top elastic ring, thread-locking ring is a thin cylinder shape, and screw thread is made in the bottom.Be provided with thrust ring (4) in the bottom of top elastic ring and thread-locking ring, for ease of installing, the structure design of thrust ring is two semi-rings.Thread-locking ring and thrust ring acting in conjunction connect together top connection and lower contact, in case fall under the lower contact when carrying brill.Thread-locking ring can transmit axial load.Top connection and thrust ring contact surface and with the lower contact contact surface be sphere, be the centre of sphere with the round heart in cross section of crossing the steel ball center.This structure and spherical transmission one are worked, and making can angle of deflection between top connection and the lower contact.Last sealing ring and lower seal adopt the O shape rubber seal of standard.Elastic tube is to cover rubber hydraulic pressure flexible rubber hose outside the steel wire winding strengthens, and end walls is thicker up and down, is provided with seal groove, is convenient to obtain the better seal performance; Midfeather is thinner, to obtain better elastic.Elastic tube is as the runner of drilling fluid, and its is to the flexible effect without limits of inclination.Two sealing rings are used to seal drilling fluid up and down, prevent that drilling fluid from entering the ball recess drive area through the upper and lower end face of elastic tube.The spherical groove planted agent of upper and lower joint is coated with full butter, shields.Owing to adopted this special spherical drive mechanism, can allow certain inclination angle between top connection and the lower contact, thereby when DHA tilts, allow to produce between the drill collars at different levels certain bending, thereby eliminate the flexural stress of drill collar threads, prolong the application life of drill collar.
Claims (3)
1, a kind of by top connection (1), lower contact (9) but the deflection drill collar shock absorber of forming, it is characterized in that being provided with top connection ball recess (6) at the middle part of top connection, also be provided with lower contact ball recess (7) in the relevant position of lower contact, when top connection engages with lower contact, steel ball (8) is placed in top connection ball recess (6) and the lower contact ball recess (7).
But 2, deflection drill collar shock absorber according to claim 1, it is characterized in that bonding part up and down in top connection and lower contact, be respectively arranged with top elastic ring (2) and bottom elastic ring (10), be provided with thread-locking ring (3) in the outer ring of top elastic ring, be provided with thrust ring (4) in the bottom of top elastic ring and thread-locking ring.
But 3, deflection drill collar shock absorber according to claim 2, it is characterized in that elastic tube (11) in the middle of the centre of the overlaid bonding part of top connection and lower contact is provided with, be respectively equipped with sealing ring (5) and lower seal (12) at the upper/lower terminal of middle elastic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118214 CN200958370Y (en) | 2006-06-02 | 2006-06-02 | Deflection vibration reducer of drilling collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620118214 CN200958370Y (en) | 2006-06-02 | 2006-06-02 | Deflection vibration reducer of drilling collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958370Y true CN200958370Y (en) | 2007-10-10 |
Family
ID=38785249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620118214 Expired - Fee Related CN200958370Y (en) | 2006-06-02 | 2006-06-02 | Deflection vibration reducer of drilling collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200958370Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003149A (en) * | 2010-10-26 | 2011-04-06 | 杜洋 | Screw pump sucker rod connector |
| CN101644144B (en) * | 2008-08-04 | 2013-03-13 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transverse shock absorber applicable in gas drilling |
-
2006
- 2006-06-02 CN CN 200620118214 patent/CN200958370Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644144B (en) * | 2008-08-04 | 2013-03-13 | 中国石化集团胜利石油管理局钻井工艺研究院 | Transverse shock absorber applicable in gas drilling |
| CN102003149A (en) * | 2010-10-26 | 2011-04-06 | 杜洋 | Screw pump sucker rod connector |
| CN102003149B (en) * | 2010-10-26 | 2013-02-13 | 杜洋 | Screw pump sucker rod connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |