CN111255378A - Hydraulic drag reduction oscillator for guiding oil-gas field drilling - Google Patents
Hydraulic drag reduction oscillator for guiding oil-gas field drilling Download PDFInfo
- Publication number
- CN111255378A CN111255378A CN202010149157.6A CN202010149157A CN111255378A CN 111255378 A CN111255378 A CN 111255378A CN 202010149157 A CN202010149157 A CN 202010149157A CN 111255378 A CN111255378 A CN 111255378A
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- ring
- outer shell
- abutting
- drilling
- periphery
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
The invention discloses a hydraulic drag reduction oscillator for guiding oil-gas field drilling, which comprises a vibration mechanism, a power assembly and a bottom assembly, wherein the vibration mechanism is arranged on the bottom assembly; the telescopic floating isolating ring is arranged between the periphery of the lower end of the vibrating shaft and the end face of the inner ring of the outer shell, and the guide ring in a tapered ring body structure with a large upper part and a small lower part is arranged at the lower end of the vibrating shaft, so that a path for drilling fluid to overflow from the periphery of the vibrating shaft is closed, the overflow amount of the drilling fluid from a drainage cavity at the lower end of the vibrating shaft is reduced, the drilling fluid amount in a dynamic impact ring cavity between the telescopic isolating ring and the guide ring is greatly improved, and the vibration sensitivity of the vibrating shaft is improved.
Description
Technical Field
The invention relates to a hydraulic drag reduction oscillator for guiding oil-gas field drilling.
Background
During the drilling process, the rock breaking mode is an important factor influencing the drilling speed, and the drilling process is seriously influenced by underground obstruction or drill sticking. Extended reach drilling modes face greater challenges as current wellbores become more irregular. The problems that the friction resistance is reduced, the drilling sticking accidents of the conventional drilling well are reduced, the dynamic bit pressure is increased, and the efficiency of the conventional drilling well is improved are urgently needed to be solved in the current drilling engineering. The field practice shows that the application of proper periodic axial vibration to the drill column can effectively reduce the frictional resistance between a drilling tool and a well wall in the drilling process, improve the rock breaking efficiency of conventional drilling, reduce the drilling sticking accidents of the conventional drilling, increase the dynamic bit pressure, and is suitable for various drilling modes such as a large-displacement well, a directional drilling mode, a horizontal drilling mode, a vertical drilling mode, a continuous oil pipe drilling mode and the like; in the prior art, for example, in both patent application nos. 201210172935.9 and 2014105745646, a belleville spring is generally added between a vibration shaft and an outer shell in a vibration mechanism, when the vibration shaft is driven by a simple harmonic pressure wave from a power assembly, the vibration shaft is enabled to perform axial simple harmonic motion, but when the belleville spring is actually used, abrasion is easily generated between the belleville spring and the vibration shaft and between the belleville spring and the outer shell, and further resistance to axial motion of the vibration shaft is increased, so that vibration is insensitive and unreliable, in addition, the belleville spring is worn and aggravated along with the pushing of time, so that the belleville spring generates radial shaking, and a part of axial simple harmonic pressure wave is decomposed, and further, the vibration shaft is insensitive in the axial direction; in addition, the drilling fluid that has some impact when carrying out power shock to the vibration axle lower extreme through the drilling fluid that the power assembly drove among the above-mentioned prior art file can disperse away from the inner chamber of vibration axle and outside all around, and then leads to the very big decay of impact force of drilling fluid, and then makes the vibration sensitivity of vibration axle receive the restriction.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the hydraulic drag reduction oscillator for the guided oil-gas field drilling is sensitive in vibration, small in resistance and reliable in structure.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a hydraulic drag reduction oscillator for guiding oil-gas field drilling comprises a vibration mechanism, a power assembly and a bottom assembly; the vibration mechanism is arranged at the upper end of the power assembly; the bottom assembly is arranged at the lower end of the power assembly; the vibration mechanism comprises an outer shell, a vibration shaft, a butting coil spring, a positioning ring and a sliding support; a drainage cavity is arranged in the vibration shaft; the outer shell is of a hollow structure with openings at two ends and an inserting cavity arranged inside; the vibration shaft is installed in the insertion cavity of the outer shell in a sliding insertion mode; a plurality of abutting grooves are uniformly formed in the peripheral side part of the lower end of the vibration shaft; a plurality of clamping grooves are uniformly formed in the periphery of the inner part of the lower end of the outer shell; the butting groove on the vibration shaft and the clamping groove on the outer shell are respectively in one-to-one correspondence inside and outside; an annular gap is formed between the outer side of the periphery of the lower part of the vibration shaft and the lower part of the inner part of the outer shell; an inner ring end face is arranged inside the lower end of the outer shell; a positioning ring is arranged on the end face of the inner ring; a plurality of abutting coil springs are uniformly arranged on the periphery of the upper end of the positioning ring; the abutting coil spring comprises a lower connecting end part and an upper curling part; the connecting end part is positioned below the outer side of the curling part; the lower end of the connecting end of the abutting coil spring is fixedly connected to the positioning ring; the connecting end portion is located in the annular gap; the curling part of the abutting coil spring is arranged in the abutting groove at the lower end of the vibration shaft; the abutting grooves are internally provided with a curling part of an abutting coil spring respectively; the lower side of the curling part of the abutting coil spring abuts against the lower side of the abutting groove; the sliding support is of a rectangular frame structure; one side of the sliding support is connected to the center of the curling part in a penetrating manner, and the other side of the sliding support is provided with clamping teeth; the clamping teeth of the sliding support are clamped in the clamping grooves of the outer shell in a sliding mode; the device also comprises a guide component; the guide assembly comprises a guide ring and a telescopic isolating ring; the telescopic isolating ring is arranged between the periphery of the lower end of the vibrating shaft and the end face of the inner ring of the outer shell; the telescopic isolating ring is made of a corrugated pipe material; the guide ring is communicated and arranged at the lower end of the vibration shaft; the guide ring is in a conical ring structure with a large upper part and a small lower part; a power impact ring cavity is formed between the telescopic isolating ring and the guide ring; the inner side of the inner ring end surface of the outer shell is provided with a conical diversion ring surface with a large upper part and a small lower part.
Furthermore, four abutting grooves are uniformly formed in the peripheral side part of the lower end of the vibration shaft; four clamping grooves are uniformly formed in the periphery of the inner portion of the lower end of the outer shell.
Furthermore, the joint tooth of sliding support opposite side and the joint groove on the shell body all are T shape structure.
Further, the clamping teeth are made of polytetrafluoroethylene materials.
Furthermore, an external thread ring surface is arranged on the outer side of the periphery of the positioning ring; a thread ring groove is formed in the end face of the inner ring of the outer shell; the positioning ring is arranged on a thread ring groove on the end face of the inner ring of the outer shell through the outer thread ring surface on the periphery.
Furthermore, the cross sections of the splicing cavities of the vibration shaft and the outer shell are both circular structures.
Further, a sealing ring is arranged inside the periphery above the outer shell; the sealing ring is abutted against the outer side of the periphery of the vibration shaft.
Further, the lower end outside of shell body is equipped with screwed joint.
Furthermore, a wear-eliminating coating is arranged in the abutting groove at the lower end of the vibration shaft; the wear-eliminating coating is made of polytetrafluoroethylene materials.
The invention has the advantages of
1. The telescopic floating isolating ring is arranged between the periphery of the lower end of the vibrating shaft and the end face of the inner ring of the outer shell, and the guide ring in a tapered ring body structure with a large upper part and a small lower part is arranged at the lower end of the vibrating shaft, so that a path for drilling fluid to overflow from the periphery of the vibrating shaft is closed, the overflow amount of the drilling fluid from a drainage cavity at the lower end of the vibrating shaft is reduced, the drilling fluid amount in a dynamic impact ring cavity between the telescopic isolating ring and the guide ring is greatly improved, and the vibration sensitivity of the vibrating shaft is improved.
2. In order to improve the vibration sensitivity and stability, the abutting groove is formed in the outer side of the periphery of the lower portion of the vibration shaft, the positioning ring is installed on the end face of the inner ring of the outer shell, the connecting end portion of the abutting coil spring is installed at the upper end of the positioning ring, the curling portion of the abutting coil spring abuts against the lower side of the abutting groove of the vibration shaft, the connecting end portion is located in an annular gap between the outer side of the periphery of the lower portion of the vibration shaft and the lower portion of the inner portion of the outer shell, the connecting end portion of the abutting coil spring cannot be in contact with the outer shell and the vibration shaft, meanwhile, the curling portion of the abutting coil spring abuts against the abutting groove with the wear-eliminating coating, friction resistance is eliminated through the ingenious structural design, the vibration shaft is driven to reset through the curling portion of the abutting coil spring, and the plurality of abutting coil springs are used for.
3. Sliding support one side cross-under that will be rectangle frame structure is in the center of curling portion, and sliding support's opposite side passes through the joint tooth and slides the joint in the joint inslot of shell body, has so guaranteed whole butt coil spring at axial displacement's stability, can not produce and radially rock and then lead to decomposing axial power, has guaranteed simultaneously that the butt coil spring can not contact the friction with shell body and vibration week.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
Fig. 3 is a schematic top view of a coil spring according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a hydraulic drag reduction oscillator for guided oil and gas field drilling comprises a vibration mechanism, a power assembly and a bottom assembly; the vibration mechanism is arranged at the upper end of the power assembly; the bottom assembly is arranged at the lower end of the power assembly. The power assembly and the bottom assembly of the present invention are both of the prior art structures, and those skilled in the art can refer to the patent documents of the background art. The vibration mechanism comprises an outer shell 1, a vibration shaft 2, a butting coil spring 3, a positioning ring 5 and a sliding support 4; the vibration shaft 2 is of a hollow structure; a drainage cavity is arranged in the vibration shaft; the outer shell 1 is of a hollow structure with openings at two ends and an inserting cavity arranged inside; the vibration shaft 2 is arranged in the insertion cavity of the outer shell 1 in a sliding insertion manner; a plurality of abutting grooves 21 are uniformly formed in the peripheral side part of the lower end of the vibration shaft 2; a plurality of clamping grooves 11 are uniformly formed in the periphery of the inner part of the lower end of the outer shell 1; the butting groove 21 on the vibration shaft 2 and the clamping groove 11 on the outer shell 1 are respectively in one-to-one correspondence inside and outside; an annular gap 19 is formed between the outer side of the periphery of the lower part of the vibration shaft 2 and the lower part of the inner part of the outer shell 1; an inner ring end face 13 is arranged inside the lower end of the outer shell 1; the positioning ring 5 is arranged on the end surface 13 of the inner ring; a plurality of abutting coil springs 3 are uniformly arranged on the periphery of the upper end of the positioning ring 5; the abutment coil spring 3 includes a lower end connection end portion 32 and an upper end curled portion 31; the connecting end portion 32 is located below the outer side of the curled portion 31; the lower end of the connecting end part 32 of the abutting coil spring 3 is fixedly connected to the positioning ring 5; the connecting end 32 is located in the annular gap 19; the curling part 31 of the abutting coil spring 3 is arranged in the abutting groove 21 at the lower end of the vibration shaft 2; a curling part 31 of the abutting coil spring 3 is respectively arranged in the abutting groove 21; the lower side of the curling part 31 of the abutting coil spring 3 abuts against the lower side of the abutting groove 21; the sliding support 4 is of a rectangular frame structure; one side of the sliding support 4 is connected to the center of the curling part 31 in a penetrating way, and the other side of the sliding support 4 is provided with a clamping tooth 41; the clamping teeth 41 of the sliding support 4 are slidably clamped in the clamping grooves 11 of the outer shell 1. (ii) a Also comprises a guide component 7; the guide assembly 7 comprises a guide ring 72 and a telescopic isolating ring 71; the telescopic isolation 71 ring is arranged between the periphery of the lower end of the vibration shaft 2 and the inner ring end face 13 of the outer shell 1; the telescopic isolating ring 71 is made of a corrugated pipe material; the guide ring 72 is communicated and arranged at the lower end of the vibration shaft 2; the guide ring 72 is in a conical ring structure with a large upper part and a small lower part; a power impact ring cavity 75 is formed between the telescopic isolating ring 71 and the guide ring 72; the inner side of the inner ring end surface 13 of the outer shell 1 is provided with a conical diversion ring surface 17 with a large upper part and a small lower part.
As shown in fig. 1 to 3, it is further preferable that four abutting grooves 21 are uniformly formed on the lower peripheral side of the vibration shaft 2; four clamping grooves 11 are uniformly formed in the periphery of the inner portion of the lower end of the outer shell 1. Further, the clamping teeth 41 on the other side of the sliding support 4 and the clamping grooves 11 on the outer shell 1 are both in a T-shaped structure. Further preferably, the snap tooth 41 is made of a polytetrafluoroethylene material. Further, the outer side of the periphery of the positioning ring 5 is provided with an external thread ring surface; a thread ring groove 12 is arranged on the end surface of the inner ring of the outer shell 1; the positioning ring is arranged on a thread ring groove on the end face of the inner ring of the outer shell through the outer thread ring surface on the periphery. Further, the cross sections of the vibration shaft 2 and the insertion cavity of the outer shell are both circular structures. Further, a sealing ring 6 is arranged inside the periphery above the outer shell 1; the seal ring 6 abuts against the outer side of the periphery of the vibration shaft 2. Further, the lower end of the outer shell 1 is externally provided with a threaded joint. Further, a wear-eliminating coating is arranged in a butting groove 21 at the lower end of the vibration shaft 2; the wear-eliminating coating is made of polytetrafluoroethylene materials.
In the invention, the telescopic floating isolating ring 71 is arranged between the periphery of the lower end of the vibrating shaft 2 and the inner ring end face 13 of the outer shell 1, and the guide ring 72 with a conical ring body structure with a large upper part and a small lower part is arranged at the lower end of the vibrating shaft 2, so that the path of the drilling fluid overflowing from the periphery of the vibrating shaft 2 is sealed, namely the annular gap 19 is sealed and isolated, the overflow quantity of the drilling fluid from the drainage cavity at the lower end of the vibrating shaft 2 is reduced, the drilling fluid quantity in the dynamic impact ring cavity 75 between the telescopic isolating ring 71 and the guide ring 72 is greatly improved, and the vibration sensitivity of the vibrating shaft 2 is improved; in order to improve the vibration sensitivity and stability, the invention arranges a butting groove 21 at the outer side of the periphery of the lower part of a vibration shaft 2, arranges a positioning ring 5 on the end surface of an inner ring of an outer shell 1, arranges a connecting end part 32 of a butting coil spring 3 at the upper end of the positioning ring 5, butts a curling part 31 of the butting coil spring 3 at the lower side of the butting groove 21 of the vibration shaft 2, the connecting end part 32 is positioned in an annular gap 19 between the outer side of the periphery of the lower part of the vibration shaft 2 and the inner lower side of the outer shell, the connecting end part of the butting coil spring 3 can not be contacted with the outer shell 1 and the vibration shaft 2, simultaneously butts the curling part 31 of the butting coil spring 3 in the butting groove 21 provided with a wear eliminating coating, so the ingenious structural design eliminates the friction resistance, drives the reset of the vibration shaft by the curling of the butting coil spring 31, and carries out stretching and curling driving, the vibration shaft is made more sensitive to vibration in the axial direction. The sliding support 4 one side cross-under that will be rectangle frame structure is in the center of curling portion 31, and the opposite side of sliding support 4 passes through joint tooth 41 slip joint in the joint groove 11 of shell body 1, has so guaranteed whole butt coil spring 3 at axial displacement's stability, can not produce and radially rock and then lead to decomposing axial power, has guaranteed simultaneously that butt coil spring 3 can not contact the friction with shell body and vibration week.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A hydraulic drag reduction oscillator for guiding oil-gas field drilling comprises a vibration mechanism, a power assembly and a bottom assembly; the vibration mechanism is arranged at the upper end of the power assembly; the bottom assembly is arranged at the lower end of the power assembly; the vibration mechanism is characterized by comprising an outer shell, a vibration shaft, a butting coil spring, a positioning ring and a sliding support; a drainage cavity is arranged in the vibration shaft; the outer shell is of a hollow structure with openings at two ends and an inserting cavity arranged inside; the vibration shaft is installed in the insertion cavity of the outer shell in a sliding insertion mode; a plurality of abutting grooves are uniformly formed in the peripheral side part of the lower end of the vibration shaft; a plurality of clamping grooves are uniformly formed in the periphery of the inner part of the lower end of the outer shell; the butting groove on the vibration shaft and the clamping groove on the outer shell are respectively in one-to-one correspondence inside and outside; an annular gap is formed between the outer side of the periphery of the lower part of the vibration shaft and the lower part of the inner part of the outer shell; an inner ring end face is arranged inside the lower end of the outer shell; a positioning ring is arranged on the end face of the inner ring; a plurality of abutting coil springs are uniformly arranged on the periphery of the upper end of the positioning ring; the abutting coil spring comprises a lower connecting end part and an upper curling part; the connecting end part is positioned below the outer side of the curling part; the lower end of the connecting end part of the abutting coil spring is fixedly connected to the positioning ring; the connecting end portion is located in the annular gap; the curling part of the abutting coil spring is arranged in the abutting groove at the lower end of the vibration shaft; the abutting grooves are internally provided with a curling part of an abutting coil spring respectively; the lower side of the curling part of the abutting coil spring abuts against the lower side of the abutting groove; the sliding support is of a rectangular frame structure; one side of the sliding support is connected to the center of the curling part in a penetrating manner, and the other side of the sliding support is provided with clamping teeth; the clamping teeth of the sliding support are clamped in the clamping grooves of the outer shell in a sliding mode; the device also comprises a guide component; the guide assembly comprises a guide ring and a telescopic isolating ring; the telescopic isolating ring is arranged between the periphery of the lower end of the vibrating shaft and the end face of the inner ring of the outer shell; the telescopic isolating ring is made of a corrugated pipe material; the guide ring is communicated and arranged at the lower end of the vibration shaft; the guide ring is in a conical ring structure with a large upper part and a small lower part; a power impact ring cavity is formed between the telescopic isolating ring and the guide ring; the inner side of the inner ring end surface of the outer shell is provided with a conical diversion ring surface with a large upper part and a small lower part.
2. The hydraulic drag reduction oscillator for drilling in a guided oil and gas field according to claim 1, wherein four abutting grooves are uniformly formed on the peripheral side of the lower end of the vibration shaft; four clamping grooves are uniformly formed in the periphery of the inner portion of the lower end of the outer shell.
3. The hydraulic drag reduction oscillator for drilling in a guided oil and gas field according to claim 1, wherein the clamping teeth on the other side of the sliding support and the clamping grooves on the outer housing are both in a T-shaped structure.
4. The guided hydraulic drag reducing oscillator for drilling in oil and gas fields of claim 1, wherein the snap teeth are made of a polytetrafluoroethylene material.
5. The guided hydrofracture oscillator for drilling in a gas field of claim 1 wherein the locating ring has an externally threaded annulus around its outer side; a thread ring groove is formed in the end face of the inner ring of the outer shell; the positioning ring is arranged on a thread ring groove on the end face of the inner ring of the outer shell through the outer thread ring surface on the periphery.
6. The hydraulic drag reduction oscillator for drilling in a guided oil and gas field as claimed in claim 1, wherein the cross-sections of the vibration shaft and the plug cavity of the outer casing are circular structures.
7. The guided hydraulic drag reduction oscillator for drilling in oil and gas fields according to claim 1, wherein a seal ring is disposed inside the upper periphery of the outer housing; the sealing ring is abutted against the outer side of the periphery of the vibration shaft.
8. The guided hydraulic drag reducing oscillator for gas field drilling as claimed in claim 1, wherein the outer housing is externally provided with a threaded connection at a lower end thereof.
9. The guided hydraulic drag reduction oscillator for gas field drilling according to claim 1, wherein a wear-eliminating coating is provided in the abutting groove at the lower end of the vibration shaft; the wear-eliminating coating is made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149157.6A CN111255378A (en) | 2020-03-06 | 2020-03-06 | Hydraulic drag reduction oscillator for guiding oil-gas field drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010149157.6A CN111255378A (en) | 2020-03-06 | 2020-03-06 | Hydraulic drag reduction oscillator for guiding oil-gas field drilling |
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| Publication Number | Publication Date |
|---|---|
| CN111255378A true CN111255378A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010149157.6A Pending CN111255378A (en) | 2020-03-06 | 2020-03-06 | Hydraulic drag reduction oscillator for guiding oil-gas field drilling |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412351A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Oil production pipe anti-disengaging structure |
| CN114165173A (en) * | 2021-12-14 | 2022-03-11 | 江苏和信石油机械有限公司 | Quick assembly type drill rod and drill bit structure for rescue |
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| CN102704842A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Hydro-oscillator for well drilling |
| CN104405288A (en) * | 2014-10-24 | 2015-03-11 | 缪宏 | Hydraulic simple harmonic oscillator for well drilling |
| CN105041201A (en) * | 2015-07-09 | 2015-11-11 | 西南石油大学 | Hydraulic gentle vibration speed acceleration drill tool |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN107035319A (en) * | 2017-05-23 | 2017-08-11 | 扬州大学 | A kind of oilfield drilling waterpower drag reduction oscillator |
| CN107503686A (en) * | 2017-09-05 | 2017-12-22 | 中国石油大学(华东) | A kind of torsion spring type hydroscillator |
| CN108468514A (en) * | 2018-05-24 | 2018-08-31 | 长江大学 | A kind of oscillation device for downhole hydraulic oscillator |
| CN109538889A (en) * | 2018-11-21 | 2019-03-29 | 东台市高科技术创业园有限公司 | A kind of metal spacing formula testing agency |
| CN109580909A (en) * | 2018-11-21 | 2019-04-05 | 东台市高科技术创业园有限公司 | A kind of metal driving formula testing agency |
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2020
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704842A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Hydro-oscillator for well drilling |
| CN104405288A (en) * | 2014-10-24 | 2015-03-11 | 缪宏 | Hydraulic simple harmonic oscillator for well drilling |
| CN105041201A (en) * | 2015-07-09 | 2015-11-11 | 西南石油大学 | Hydraulic gentle vibration speed acceleration drill tool |
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN107035319A (en) * | 2017-05-23 | 2017-08-11 | 扬州大学 | A kind of oilfield drilling waterpower drag reduction oscillator |
| CN107503686A (en) * | 2017-09-05 | 2017-12-22 | 中国石油大学(华东) | A kind of torsion spring type hydroscillator |
| CN108468514A (en) * | 2018-05-24 | 2018-08-31 | 长江大学 | A kind of oscillation device for downhole hydraulic oscillator |
| CN109538889A (en) * | 2018-11-21 | 2019-03-29 | 东台市高科技术创业园有限公司 | A kind of metal spacing formula testing agency |
| CN109580909A (en) * | 2018-11-21 | 2019-04-05 | 东台市高科技术创业园有限公司 | A kind of metal driving formula testing agency |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412351A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Oil production pipe anti-disengaging structure |
| CN114165173A (en) * | 2021-12-14 | 2022-03-11 | 江苏和信石油机械有限公司 | Quick assembly type drill rod and drill bit structure for rescue |
| CN114165173B (en) * | 2021-12-14 | 2023-07-25 | 江苏和信石油机械有限公司 | Quick assembly type drill rod and drill bit structure for rescue |
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