CN212743933U - Hydraulic booster - Google Patents
Hydraulic booster Download PDFInfo
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- CN212743933U CN212743933U CN202021657193.5U CN202021657193U CN212743933U CN 212743933 U CN212743933 U CN 212743933U CN 202021657193 U CN202021657193 U CN 202021657193U CN 212743933 U CN212743933 U CN 212743933U
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Abstract
The utility model belongs to the technical field of the well drilling and completion, in particular to hydraulic booster. The utility model provides a hydraulic booster is including the core axis body, piston, sliding sleeve, urceolus and the lower clutch that connect gradually, core axis body, sliding sleeve, urceolus and lower clutch middle part form the center runner that runs through, the piston with core axis body third section pass through threaded connection, the sliding sleeve with the core axis body second section on the slide that is equipped with cooperate. Under the action of hydraulic pressure in the oil pipe, the lower joint moves downwards to drive the outer cylinder and the sliding sleeve to reach a bottom dead center, the bit pressure is reduced, and the hydraulic pressurization process is completed. The utility model discloses simple structure, convenient to use can extensively be used for the horizontal well to bore the mill shoe pressurization of grinding the bridging plug operation.
Description
Technical Field
The utility model belongs to the technical field of the well drilling and completion, in particular to hydraulic booster.
Background
In the process of oil-gas well operation, for correctly evaluating and recognizing a target layer, when the target layer is encountered in a multilayer stratum, and when the difference exists between the layers of each oil-gas water layer and measures such as layering test, fracturing, acidizing, multilayer well completion, temporary plugging and the like are required, a plugging tool bridge plug is required, and the bridge plug in the well needs to be drilled out one by one in the later implementation stage of the process so as to recover the smoothness of the shaft and facilitate subsequent operation. The horizontal well drilling and grinding bridge plug technology is an indispensable matching technology for a horizontal well staged multi-cluster fracturing process and is continuously applied to the development of low-permeability compact oil.
At present, ground equipment such as a power tap, a rotary table and the like cannot be used for providing power for horizontal well drilling and grinding bridge plugs so as to prevent the pipe column in a well from being driven to integrally rotate, and the casing pipe can be damaged in an inclined well section and a horizontal section, so that an oil pipe conveying screw drilling tool is generally adopted for bridge plug drilling and grinding, and due to the fact that the longitudinal vibration of the drill column can be caused by the discontinuity of drill feeding and the interaction between a grinding shoe and the bridge plug in the horizontal well drilling and grinding construction process, the drilling pressure is unstable, the drilling pressure is not easy to control, and the drilling plug efficiency and the service life of a downhole tool are reduced; if the friction resistance of the operation pipe column is increased during construction of the long horizontal section of the horizontal well, drilling pressure cannot be effectively applied to the grinding shoes by the self weight of the pipe column when the friction resistance is serious, so that the operation efficiency of drilling and grinding bridge plugs is low, and the construction period is prolonged.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model aims at providing a hydraulic pressure booster can provide stable weight on bit for the junk mill in the construction of horizontal well brill mill, prevents that the instrument in the pit from premature failure, improves and bores and grinds bridge plug operating efficiency.
The technical scheme of the utility model lies in:
a hydraulic booster comprises a core shaft body, a piston, a sliding sleeve, an outer cylinder and a lower joint which are sequentially connected, wherein a through central flow passage is formed in the middle parts of the core shaft body, the sliding sleeve, the outer cylinder and the lower joint; the mandrel body is divided into three sections which are connected in sequence from top to bottom, wherein the outer diameter of the third section is smaller than that of the second section and smaller than that of the first section, the outer diameter of the second section of the mandrel body is smaller than that of the outer cylinder, and a slide way is arranged on the second section of the mandrel body; the piston is positioned at the lower end of the mandrel body and is in threaded connection with the third section of the mandrel body, and the outer diameter of the piston is larger than that of the second section of the mandrel body; the sliding sleeve is matched with a slideway arranged on the second section of the mandrel body; the upper part of the outer cylinder is connected with the lower part of the sliding sleeve through threads, and the lower part of the outer cylinder is connected with the lower joint through threads.
The third section of the mandrel body is provided with a packing groove, and the third section of the mandrel body and the piston are sealed through a sealing packing in the packing groove; the outer diameter of the piston is the same as the inner diameter of the outer cylinder, and the lower part of the outer cylinder and an upper O-shaped rubber ring in an O-shaped rubber ring groove at the lower part of the piston form sliding seal; the lower part of the outer cylinder and the upper part of the lower joint are sealed through a lower O-shaped rubber ring.
The sliding sleeve is a hexagonal sleeve, an inner hexagonal hole is formed in the sliding sleeve, the second section of the slide way of the mandrel body is a hexagonal body, and the inner hexagonal hole is matched with the hexagonal body.
And a liquid discharge hole is formed in the side wall of the upper part of the outer barrel, which is close to the lower part of the sliding sleeve.
The outer diameter of the first section of the mandrel body is the same as the outer diameter of the sliding and the outer diameter of the outer barrel.
And an oil pipe female buckle is arranged on the first section of the mandrel body.
The technical effects of the utility model reside in that:
1. the utility model provides a hydraulic pressure booster, through with hydraulic action sliding sleeve, urceolus, lower clutch downstream conversion for the weight of a bit in the oil pipe, hydraulic pressure pressurization makes the weight of a bit stable, has overcome long horizontal section horizontal well and has leaned on the unable effectual difficult problem of applying the weight of a bit for the junk mill of tubular column self weight, is favorable to improving bridging plug operating efficiency, the utility model discloses simple structure, convenient to use can extensively be used for the junk mill pressurization of horizontal well drilling bridging plug operation. 2. The utility model provides a hydraulic pressure booster, adopts slip cap, urceolus, lower clutch reciprocating motion to exert invariable weight of a bit, and the piston can be according to the undulant automatic adjustment of weight of a bit, can effectual absorption tubular column longitudinal vibration, is favorable to protecting the tubular column, can keep apart the longitudinal vibration of junk mill and the drilling string vibration more than the hydraulic pressure ware, prevents that longitudinal vibration from arousing transverse vibration, improves downhole tool life.
The following will be further described with reference to the accompanying drawings
Drawings
Fig. 1 is a schematic structural diagram of the hydraulic booster of the present invention.
Fig. 2 is a schematic view of the structure of the mandrel body of the hydraulic booster of the present invention.
Reference numerals: 1-mandrel body, 2-sliding sleeve, 3-outer barrel, 4-piston, 5-sealing packing, 6-upper O-shaped rubber ring, 7-lower O-shaped rubber ring, 8-lower joint, 9-oil pipe female buckle, 10-slideway, 11-thread, 12-packing groove, 13-central flow passage, 17-O-shaped rubber ring groove and 18-liquid discharge hole.
Detailed Description
Example 1
In order to overcome the problems that the drill string longitudinal vibration is caused to cause unstable bit pressure due to the discontinuity of bit feeding and the interaction between a grinding shoe and a bridge plug in the drilling and grinding construction process of a horizontal well, and the bit pressure cannot be effectively applied to the grinding shoe by the self weight of a pipe column during the construction of a long horizontal section of the horizontal well, so that the low operation efficiency of the drilling and grinding bridge plug is caused, the utility model provides a hydraulic booster and a use method as shown in figure 1, the utility model discloses a hydraulic action sliding sleeve, an outer cylinder and a lower connector in an oil pipe move downwards to be converted into the bit pressure, so that the bit pressure is stable by hydraulic pressurization, thereby overcoming the problem that the bit pressure cannot be effectively applied to the grinding shoe by the self weight of the pipe column in the horizontal well with a long horizontal section, and being beneficial to; and the sliding sleeve, the outer barrel and the lower joint apply constant bit pressure through reciprocating motion, can be automatically adjusted according to bit pressure fluctuation, can effectively absorb the longitudinal vibration of the pipe column, is favorable for protecting the pipe column and prolongs the service life of the downhole tool.
A hydraulic booster comprises a core shaft body 1, a piston 4, a sliding sleeve 2, an outer cylinder 3 and a lower joint 8 which are connected in sequence, wherein a through central flow passage 13 is formed in the middle parts of the core shaft body 1, the sliding sleeve 2, the outer cylinder 3 and the lower joint 8;
the mandrel body 1 is divided into three sections which are connected in sequence from top to bottom, wherein the outer diameter of the third section is smaller than that of the second section and smaller than that of the first section, the outer diameter of the second section of the mandrel body 1 is smaller than that of the outer cylinder 3, and a slide way 10 is arranged on the second section of the mandrel body 1;
the piston 4 is positioned at the lower end of the mandrel body 1 and is in threaded connection with the third section of the mandrel body 1, and the outer diameter of the piston 4 is larger than that of the second section of the mandrel body 1.
The sliding sleeve 2 is matched with a slide way 10 arranged on the second section of the mandrel body 1.
The upper part of the outer cylinder 3 is connected with the lower part of the sliding sleeve 2 through threads, and the lower part of the outer cylinder 3 is connected with the lower joint 8 through threads.
As shown in figure 1, the utility model moves downwards under the action of the pressure difference in the oil pipe by the matching of the sliding sleeve 2, the outer cylinder 3 and the lower joint 8, thereby providing constant bit pressure for the lower milling shoe; the sliding sleeve 2, the outer barrel 3 and the lower joint 8 can automatically adjust reciprocating speed according to bit pressure fluctuation, can effectively absorb longitudinal vibration of the pipe column, are favorable for protecting the pipe column, and prolong the service life of downhole tools.
Example 2
On the basis of embodiment 1, in this embodiment, as shown in fig. 1 and fig. 2, preferably, a packing groove 12 is provided on a third section of the spindle body 1, and the third section of the spindle body 1 and the piston 4 are sealed by a sealing packing 5 in the packing groove 12; preferably, the outer diameter of the piston 4 is the same as the inner diameter of the outer cylinder 3, and the lower part of the outer cylinder 3 forms a sliding seal with the upper O-shaped rubber ring 6 in the O-shaped rubber ring groove 17 at the lower part of the piston 4; preferably, the lower part of the outer cylinder 3 and the upper part of the lower joint 8 are sealed by a lower O-shaped rubber ring 7.
As shown in figure 1, the utility model discloses a sealed packing 5, go up O type rubber ring 6, lower O type rubber ring 7 forms sealedly, can prevent effectively that liquid from flowing outside the pipe from hydraulic pressure booster's piston 4, urceolus 3 department in the center flow channel 13, has improved hydraulic pressure booster's job stabilization nature, increase of service life.
Example 3
On the basis of embodiment 2, in this embodiment, preferably, the sliding sleeve 2 is a hexagonal sleeve, an inner hexagonal hole is formed inside the hexagonal sleeve, the second section of the slideway 10 of the mandrel body 1 is a hexagonal body, and the inner hexagonal hole of the hexagonal sleeve is matched with the hexagonal body.
As shown in figure 2, the utility model discloses a hexagonal cover and dabber body adopt the hexagonal body to cooperate, this structure prevents to produce between hexagonal cover urceolus 3, lower clutch 8 and the dabber body 1 and rotates to can transmit lower part instrument with hydraulic pressure booster upper portion moment of torsion, provide rotary power for the mill shoe.
Example 4
In addition to embodiment 3, in this embodiment, it is preferable that the upper portion of the outer cylinder 3 is provided with a drain hole 18 near the lower portion of the sliding sleeve 2.
Preferably, the outer diameter of the first section of the mandrel body 1 is the same as the outer diameter of the sliding sleeve 2 and the outer diameter of the outer cylinder 3.
As shown in fig. 1, the mandrel body 1, the piston 4, the sliding sleeve 2 and the outer cylinder 3 form a sliding space, and the discharge hole 8 can effectively discharge liquid in the cavity, so that the sliding sleeve 2, the outer cylinder 3 and the lower joint 8 can rapidly reciprocate. The outer diameter of the first section of the mandrel body 1 is the same as that of the sliding sleeve 2 and that of the outer cylinder 3, so that the outer surface of the hydraulic booster is smooth, and blocking is prevented from occurring in the process of tripping a tubular column.
Preferably, the mandrel body 1 first section on be equipped with oil pipe box 9, owing to used conventional thread type, make the utility model discloses connection that hydraulic booster can be convenient is on the working string, and need not to use special crossover sub.
Example 5
On the basis of embodiment 4, a hydraulic booster is specifically pressurized as follows:
the method comprises the following steps: connecting a hydraulic booster to a downhole working string through an oil pipe box 9 and a lower connector 8, starting a pump and putting down the string when drilling and grinding are started, wherein when the lower part of a grinding shoe is positioned away from the upper part of a first bridge plug, the suspended weight of a weight indicator is the weight of a drill string in circulating liquid, a sliding sleeve 2 of the hydraulic booster is attached to the lower part of a first section of a core shaft body 1, an outer cylinder 3 is positioned at the initial point of a drilling pressure stroke, and the stroke of the outer cylinder 3 is in a fully closed state;
step two: when normal drilling and grinding operation is carried out, slowly lowering the drill column to enable the grinding shoe to contact the first bridge plug, reducing the suspension weight of the weight indicator to obtain the drilling pressure, and recording the drilling pressure value and the pumping pressure value at the moment;
step three: keeping the hanging weight unchanged, and with the drilling of the grinding shoe, the lower joint 8 continuously moves downwards under the hydraulic action of the hydraulic booster in the oil pipe to drive the outer cylinder 3 and the sliding sleeve 2 to reach a bottom dead center, at the moment, the lower end of the sliding sleeve 2 is attached to the upper end of the piston 4, the drilling pressure is reduced, the hydraulic pressurizing process is completed, and at the moment, the drill is timely fed. The bit feeding distance is the extension length of the outer cylinder 3, and the drilling and grinding of the first stroke are completed;
step four: and repeating the second step and the third step to complete the hydraulic pressurization process until the drilling and grinding are finished.
And (3) continuously drilling the grinding shoe, continuously extending the pipe, when the hanging weight of the weight indicator is reduced to be smaller than a required drilling pressure value or no hanging weight, applying the drilling pressure to the grinding shoe by the self weight of the pipe column, keeping the pumping pressure unchanged according to the pumping pressure value recorded in the step two, continuously drilling the grinding shoe, repeating the step three, enabling the hydraulic booster to continuously move downwards under the hydraulic action in the oil pipe to drive the outer cylinder 3 and the sliding sleeve 2 to reach a bottom dead center, enabling the lower end of the sliding sleeve 2 to be attached to the upper end of the piston 4 at the moment, reducing the drilling pressure, completing the hydraulic pressurization process, and timely delivering the drill at the moment, wherein the drilling distance is the extension length of the outer cylinder 3.
The utility model discloses lean on intraductal hydraulic drive, simple structure, convenient to use can extensively be used for the horizontal well to bore the mill shoe pressurization of grinding the bridging plug operation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (8)
1. A hydraulic booster characterized in that: the piston type piston pump comprises a core shaft body (1), a piston (4), a sliding sleeve (2), an outer cylinder (3) and a lower joint (8) which are sequentially connected, wherein a through central flow passage (13) is formed in the middle parts of the core shaft body (1), the sliding sleeve (2), the outer cylinder (3) and the lower joint (8);
the core shaft body (1) is divided into three sections which are connected in sequence from top to bottom, wherein the outer diameter of the third section is smaller than that of the second section and smaller than that of the first section, the outer diameter of the second section of the core shaft body (1) is smaller than that of the outer cylinder (3), and a slideway (10) is arranged on the second section of the core shaft body (1);
the piston (4) is positioned at the lower end of the mandrel body (1) and is in threaded connection with the third section of the mandrel body (1), and the outer diameter of the piston (4) is larger than that of the second section of the mandrel body (1);
the sliding sleeve (2) is matched with a slideway (10) arranged on the second section of the core shaft body (1);
the upper part of the outer cylinder (3) is connected with the lower part of the sliding sleeve (2) through threads, and the lower part of the outer cylinder (3) is connected with the lower joint (8) through threads.
2. A hydraulic force intensifier as claimed in claim 1 wherein: the third section of the mandrel body (1) is provided with a packing groove (12), and the third section of the mandrel body (1) and the piston (4) are sealed through a sealing packing (5) in the packing groove (12).
3. A hydraulic force intensifier as claimed in claim 1 wherein: the outer diameter of the piston (4) is the same as the inner diameter of the outer cylinder (3), and the lower part of the outer cylinder (3) and an upper O-shaped rubber ring (6) in an O-shaped rubber ring groove (17) at the lower part of the piston (4) form sliding seal.
4. A hydraulic force intensifier as claimed in claim 1 wherein: the lower part of the outer cylinder (3) and the upper part of the lower joint (8) are sealed through a lower O-shaped rubber ring (7).
5. A hydraulic force intensifier as claimed in claim 1 wherein: the sliding sleeve (2) is a hexagonal sleeve, an inner hexagonal hole (14) is formed in the hexagonal sleeve, the second section of the slide way (10) of the core shaft body (1) is a hexagonal body, and the inner hexagonal hole is matched with the hexagonal body.
6. A hydraulic force intensifier as claimed in claim 1 wherein: and a liquid discharge hole (18) is formed in the side wall of the upper part of the outer cylinder (3) close to the lower part of the sliding sleeve (2).
7. A hydraulic force intensifier as claimed in claim 1 wherein: the outer diameter of the first section of the mandrel body (1) is the same as the outer diameter of the sliding sleeve (2) and the outer diameter of the outer cylinder (3).
8. A hydraulic force intensifier as claimed in claim 1 wherein: and an oil pipe female buckle (9) is arranged on the first section of the mandrel body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021657193.5U CN212743933U (en) | 2020-08-11 | 2020-08-11 | Hydraulic booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021657193.5U CN212743933U (en) | 2020-08-11 | 2020-08-11 | Hydraulic booster |
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| Publication Number | Publication Date |
|---|---|
| CN212743933U true CN212743933U (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021657193.5U Active CN212743933U (en) | 2020-08-11 | 2020-08-11 | Hydraulic booster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911103A (en) * | 2020-08-11 | 2020-11-10 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
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2020
- 2020-08-11 CN CN202021657193.5U patent/CN212743933U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911103A (en) * | 2020-08-11 | 2020-11-10 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
| CN111911103B (en) * | 2020-08-11 | 2023-10-20 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
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