CN203614037U - Underground negative-pressure pulse jet flow absorber - Google Patents
Underground negative-pressure pulse jet flow absorber Download PDFInfo
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- CN203614037U CN203614037U CN201320663349.4U CN201320663349U CN203614037U CN 203614037 U CN203614037 U CN 203614037U CN 201320663349 U CN201320663349 U CN 201320663349U CN 203614037 U CN203614037 U CN 203614037U
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- shell body
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- pressure pulse
- jet flow
- pulse jet
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Abstract
The utility model relates to an underground negative-pressure pulse jet flow absorber in the field of special tools in the industries, such as petroleum and gas drilling, geological exploration, mine drilling and coal bed gas development. The center shaft of the underground negative-pressure pulse jet flow absorber is sheathed in an outer shell; the center shaft and the outer shell body are cooperated by a groove and a bulge on a folding surface; the center shaft, the outer shell body and a spline form axial spacing sliding fit; the lower part of the center shaft is provided with a by-pass port; the lower part of the outer shell body is provided with an inner bulge in splicing sealing fit with the by-pass port of the center shaft; a stabilizer is fixedly connected to the outer part of the lower end of the outer shell body. According to the underground negative-pressure pulse jet flow absorber disclosed by the utility model, the inner runner of a drill string is controlled by drill string vibration to be opened or closed periodically; while the harm caused by the drill string vibration is lowered, the advantages of the unbalanced drilling technology of underground negative-pressure pulse jet flow are performed; the underground negative-pressure pulse jet flow absorber also has the characteristics of a percussion drill and has an important practical meaning for improving the drilling speed of a deep well and an extradeep well and prolonging the service life of the drill string and a drill. Meanwhile, the underground negative-pressure pulse jet flow absorber has the advantages of simple structure, convenience in operation, convenience in installation, safety and reliability.
Description
Technical field
The utility model relates to a kind of DH negative pressure pulsing jet shock absorber in oil and gas well drilling, CBM Drilling, geological prospecting, boring tool field, mine.
Background technology
Along with the increasing day by day of oil-gas field development difficulty and the fast development of drilling technology, oil gas field grows with each passing day to the requirement of drilling speed, particularly in deep-well, ultradeep well drilling process, along with the increase of drilling fluid density and well depth, drilling fluid column pressure produces chip hold down effect to shaft bottom landwaste, makes landwaste be difficult to hightail shaft bottom, causes drill bit Repeated Cutting, reduce efficiency of breaking rock, had a strong impact on the raising of bit speed.Meanwhile, in drilling process, because producing underground drill stem, the broken rock feature of drill bit longitudinally reverses and horizontal impact shock, and especially more violent in the time creeping into hard formation or soft or hard interlayer.Drillstring vibrations brings very big harm to drillng operation, is mainly manifested in: 1. can not add equably the pressure of the drill and apply moment of torsion, making drill bit early damage, affecting bit life and drilling speed; 2. aggravate drill string fatigue and destroy, the most serious with drill string component connecting portion, Chang Fashengci button, thread gluing, fracture accident; 3. destroy ground installation.
Drilling practice shows, negative pulse jet under-balanced drilling technology combines the advantage of under-balanced drilling technology and jet drilling technology, having overcome again deficiency separately, played remarkable positive effect for improving bit speed, is a kind of more satisfactory drilling technology.But due to the structural problem of pulse generating unit, cause in use, pulse generating unit result of use is bad, reliability is lower, has restricted the development of technique.
Summary of the invention
The purpose of this utility model is exactly the problem existing for prior art, and design is a kind of simple in structure, dependable performance, and control accuracy is high, easy to operate DH negative pressure pulsing jet shock absorber.
The utility model solves the technical scheme that its technical problem adopts:
A kind of DH negative pressure pulsing jet shock absorber comprises: central axis 1, shell body 2, spline 5 and stabilizer 9, wherein: central axis 1 is sleeved on shell body 2 inside, between central axis 1 and shell body 2, coordinate by the groove on involutory surface and projection and spline 5 forms axial limiting and is slidably matched, central axis 1 bottom processing by-pass prot 8, shell body 2 bottoms are provided with and the by-pass prot 8 of central axis 1 internal projection being sealed and matched of pegging graft, and stabilizer 9 is connected in shell body 2 outsides, lower end.
Such scheme further comprises:
Between central axis 1 and shell body 2, top is prefabricated with annular groove, annular groove inner spring 4.
Stabilizer 9 external process helicla flutes.
Central axis 1 lower end is arc or taper, and the shell body 2 bottom internal projection parts that coordinate are with it taper.
Spline 5 is full of lubrication oil in residing space, on the involutory surface between central axis 1 and shell body 2, is provided with sealing device.
DH negative pressure pulsing jet shock absorber of the present utility model is arranged between drill bit and drilling assembly, in the time that drill string vibrates, central axis is in shell body top, now drilling fluid enters shell body by central axis by-pass prot, then arrive drill bit, moment of torsion is passed to shell body by central axis by spline simultaneously, then drives bit, in the time there is vibration in drill string, central axis produces relative motion with shell body under the cooperation of spline, in the time that central axis lower end enters shell body lower end, by-pass prot is closed, the runner that is drilling fluid arrival drill bit is closed, the drilling fluid of shaft bottom drill bit near zone returns on continuing under effect of inertia simultaneously, because stabilizer external diameter is close with drill bit, after shaft bottom drilling fluid is emptying, do not have incoming flow to supplement, therefore the space forming at shaft bottom and stabilizer is in instantaneous negative pressure state, the fragmentation and the landwaste that are conducive to bottom rock depart from shaft bottom, and in the time that central axis stopping means contacts with shell body interior step structure, the impact force producing also can reach drill bit by shell body, form percussion drilling, during due to drillstring vibrations, drill bit departs from shaft bottom, shell body is descending under the effect of drilling liquid pressure and spring restoring force, in the time that shell body lower end is left in central axis lower end, runner is opened, drilling fluid arrives drill bit, thereby form pulsing jet.Pulsing jet, shaft bottom negative pressure state and percussion drilling acting in conjunction, significantly improve bit speed, utilize drillstring vibrations that driving force is provided simultaneously, reduce the impact that drillstring vibrations causes, in improving bit speed, reduce drillstring vibrations, turn harm into good, significant for deep-well, the excellent fast drilling well of ultradeep well.
This DH negative pressure pulsing jet shock absorber is in performance negative pulse jet under-balanced drilling technology advantage, reduce the harm of drillstring vibrations, and have percussion drilling feature concurrently, and extend the application life of drill string and drill bit, meet oil-gas field development and propose for drilling engineering the technical requirements of effect.Also have that structure design is simple and reliable, easy to process, the feature such as operate steadily.
Accompanying drawing explanation
Fig. 1 is a kind of DH negative pressure pulsing jet shock absorber example structure schematic diagram proposing according to the utility model.
In figure, 1-central axis, 2-shell body, 3-sealing device, 4-spring, 5-spline, 6-stopping means, 7-sealing device, 8-by-pass prot, 9-stabilizer.
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing 1 and specific embodiment.
Embodiment 1
A kind of DH negative pressure pulsing jet shock absorber comprises: central axis 1, shell body 2, spline 5 and stabilizer 9, wherein: central axis 1 is sleeved on shell body 2 inside, between central axis 1 and shell body 2, coordinate by the groove on involutory surface and projection and spline 5 forms axial limiting and is slidably matched, central axis 1 bottom processing by-pass prot 8, shell body 2 bottoms are provided with and the by-pass prot 8 of central axis 1 internal projection being sealed and matched of pegging graft, and stabilizer 9 is connected in shell body 2 outsides, lower end.
Embodiment 2
On the basis of above-described embodiment 1, further comprise:
Between central axis 1 and shell body 2, top is prefabricated with annular groove, annular groove inner spring 4, stabilizer 9 external process helicla flutes.
Embodiment 3
As Fig. 1, central axis 1 is arranged on shell body 2 inside, mounting sealing device 3, sealing device 7 and spring 4 between central axis 1 and shell body 1, between central axis 1 and shell body 2, coordinate by spline 5, central axis 1 bottom processing by-pass prot 8, on central axis 1, process stopping means 6, the outside stabilizer 9 of installing of shell body 2.
The DH negative pressure pulsing jet shock absorber of above-described embodiment is arranged between drill bit and drilling assembly, in the time that drill string vibrates, central axis is in shell body top, now drilling fluid enters shell body by central axis by-pass prot, then arrive drill bit, moment of torsion is passed to shell body by central axis by spline simultaneously, then drives bit, in the time there is vibration in drill string, central axis produces relative motion with shell body under the cooperation of spline, in the time that central axis lower end enters shell body lower end, by-pass prot is closed, the runner that is drilling fluid arrival drill bit is closed, the drilling fluid of shaft bottom drill bit near zone returns on continuing under effect of inertia simultaneously, because stabilizer external diameter is close with drill bit, after shaft bottom drilling fluid is emptying, do not have liquid stream to supplement, therefore the space forming at shaft bottom and stabilizer is in instantaneous negative pressure state, the fragmentation and the landwaste that are conducive to bottom rock depart from shaft bottom, and in the time that central axis stopping means contacts with shell body interior step structure, the impact force producing also can reach drill bit by shell body, form percussion drilling, during due to drillstring vibrations, drill bit departs from shaft bottom, shell body is descending under the effect of drilling liquid pressure and spring restoring force, in the time that shell body lower end is left in central axis lower end, runner is opened, drilling fluid arrives drill bit, thereby form pulsing jet.
Claims (5)
1. a DH negative pressure pulsing jet shock absorber is characterized in that comprising: central axis (1), shell body (2), spline (5) and stabilizer (9), wherein: central axis (1) is sleeved on shell body (2) inside, between central axis (1) and shell body (2), coordinates by the groove on involutory surface and projection and spline (5) formation axial limiting is slidably matched, central axis (1) bottom processing by-pass prot (8), shell body (2) bottom is provided with and the by-pass prot (8) of central axis (1) internal projection being sealed and matched of pegging graft, stabilizer (9) is connected in shell body (2) outside, lower end.
2. DH negative pressure pulsing jet shock absorber according to claim 1, is characterized in that: between central axis (1) and shell body (2), top is prefabricated with annular groove, is provided with spring (4) in annular groove.
3. DH negative pressure pulsing jet shock absorber according to claim 1 and 2, is characterized in that: stabilizer (9) external process helicla flute.
4. DH negative pressure pulsing jet shock absorber according to claim 3, is characterized in that: central axis (1) lower end is arc or taper, and shell body (2) the bottom internal projection part coordinating is with it taper.
5. DH negative pressure pulsing jet shock absorber according to claim 4, is characterized in that: spline (5) is full of lubrication oil in residing space, on the involutory surface between central axis (1) and shell body (2), is provided with sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663349.4U CN203614037U (en) | 2013-10-27 | 2013-10-27 | Underground negative-pressure pulse jet flow absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663349.4U CN203614037U (en) | 2013-10-27 | 2013-10-27 | Underground negative-pressure pulse jet flow absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614037U true CN203614037U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663349.4U Expired - Fee Related CN203614037U (en) | 2013-10-27 | 2013-10-27 | Underground negative-pressure pulse jet flow absorber |
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| CN (1) | CN203614037U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285464A (en) * | 2016-09-26 | 2017-01-04 | 中国石油大学(华东) | A kind of instantaneous negative pressure underbalance well drilling plant and method |
| CN111456717A (en) * | 2019-01-20 | 2020-07-28 | 中石化石油工程技术服务有限公司 | Vibration absorption and pressurization coupler |
| CN111456631A (en) * | 2019-01-19 | 2020-07-28 | 中石化石油工程技术服务有限公司 | High frequency torque oscillator |
-
2013
- 2013-10-27 CN CN201320663349.4U patent/CN203614037U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285464A (en) * | 2016-09-26 | 2017-01-04 | 中国石油大学(华东) | A kind of instantaneous negative pressure underbalance well drilling plant and method |
| CN111456631A (en) * | 2019-01-19 | 2020-07-28 | 中石化石油工程技术服务有限公司 | High frequency torque oscillator |
| CN111456717A (en) * | 2019-01-20 | 2020-07-28 | 中石化石油工程技术服务有限公司 | Vibration absorption and pressurization coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151117 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Patentee after: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Drilling Well Technology Institute, Shengli Petroleum Engineering Co., Ltd., SINOPEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20201027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |