CN111911103A - Hydraulic booster and use method thereof - Google Patents
Hydraulic booster and use method thereof Download PDFInfo
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- CN111911103A CN111911103A CN202010801458.2A CN202010801458A CN111911103A CN 111911103 A CN111911103 A CN 111911103A CN 202010801458 A CN202010801458 A CN 202010801458A CN 111911103 A CN111911103 A CN 111911103A
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- outer cylinder
- sliding sleeve
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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
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
Abstract
The invention belongs to the technical field of drilling and completion, and particularly relates to a 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 invention has simple structure and convenient use, and can be widely used for the pressure of the grinding shoe for the operation of drilling and grinding the bridge plug of the horizontal well.
Description
Technical Field
The invention belongs to the technical field of drilling and completion, and particularly relates to a hydraulic booster and a using method thereof.
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.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a hydraulic booster and a method of use thereof, which can provide stable drilling pressure for a grinding shoe during drilling and grinding construction of a horizontal well, prevent a downhole tool from being damaged prematurely, and improve the efficiency of drilling and grinding a bridge plug.
The technical scheme of the invention is as follows:
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 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 an 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 application method of the hydraulic booster uses any one of the hydraulic boosters, and comprises the following specific processes:
the method comprises the following steps: connecting a hydraulic booster to an underground working pipe column through an oil pipe female buckle and a lower joint, starting a pump and putting down the pipe column 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 column in circulating liquid, a sliding sleeve of the hydraulic booster is attached to the lower part of the first section of a core shaft body, an outer barrel is positioned at the starting point of a drilling pressure stroke, and the stroke of the outer barrel is in a full-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: the hanging weight is kept unchanged, the lower joint of the hydraulic booster continuously moves downwards under the hydraulic action in the oil pipe along with the drilling of the grinding shoe to drive the outer cylinder and the sliding sleeve to reach a bottom dead center, at the moment, the lower end of the sliding sleeve is attached to the upper end of the piston, 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, 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 pump pressure unchanged according to the pump pressure value recorded in the step two, continuously drilling the grinding shoe, repeating the step three, driving the outer barrel and the sliding sleeve to reach a bottom dead center under the hydraulic action of a hydraulic booster in the oil pipe, attaching the lower end of the sliding sleeve to the upper end of the piston, reducing the drilling pressure, completing the hydraulic pressurization process, and timely feeding the drill at the moment, wherein the drilling distance is the extension length of the outer barrel.
The invention has the technical effects that:
1. the invention relates to a hydraulic booster, which converts downward movement of a hydraulic action sliding sleeve, an outer cylinder and a lower joint in an oil pipe into bit pressure, stabilizes the bit pressure by hydraulic pressurization, overcomes the problem that the bit pressure cannot be effectively applied to a grinding shoe by the self weight of a pipe column of a long horizontal section horizontal well, is favorable for improving the operation efficiency of grinding a bridge plug, has a simple structure, is convenient to use, and can be widely applied to grinding shoe pressurization for the operation of drilling and grinding the bridge plug of the horizontal well. 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.
Drawings
The following will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic diagram of the structure of the hydraulic booster of the present invention.
Fig. 2 is a schematic structural view of a mandrel body of the hydraulic booster of the invention.
Reference numerals: 1-mandrel body, 2-sliding sleeve, 3-outer barrel, 4-piston, 5-sealing packing, 6-O type rubber ring, 7-O type rubber ring, 8-lower joint, 9-oil pipe female buckle, 10-slideway, 11-thread, 12-packing groove, 13-central runner, 17-O type rubber ring groove and 18-liquid discharge hole.
Detailed Description
Example 1
In order to overcome the problems that in the drilling and grinding construction process of a horizontal well, due to the discontinuity of bit feeding and the interaction between a grinding shoe and a bridge plug, the longitudinal vibration of a drill column causes the instability of bit pressure, and in the construction of a long horizontal section of the horizontal well, the bit pressure cannot be effectively applied to the grinding shoe by the self weight of the pipe column, so that the operation efficiency of drilling and grinding the bridge plug is low, the invention provides the hydraulic booster and the use method thereof as shown in figure 1, the hydraulic action sliding sleeve, the outer cylinder and the lower connector in the oil pipe move downwards to be converted into the bit pressure, the hydraulic pressure stabilizes the bit pressure, 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 is solved, and the operation efficiency of grinding; 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 invention 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 and the O-shaped rubber ring 6 in the O-shaped rubber ring groove 17 at the lower part of the piston 4 form a sliding seal; preferably, the lower part of the outer cylinder 3 and the upper part of the lower joint 8 are sealed by an O-shaped rubber ring 7.
As shown in figure 1, the hydraulic booster of the invention forms a seal by the seal packing 5, the O-shaped rubber ring 6 and the O-shaped rubber ring 7, can effectively prevent liquid in the central flow passage 13 from flowing out of the hydraulic booster from the piston 4 and the outer cylinder 3, improves the working stability of the hydraulic booster and prolongs the 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 hexagonal sleeve and the mandrel body are matched in a hexagonal mode, the structure prevents the outer cylinder 3 of the hexagonal sleeve, the lower joint 8 and the mandrel body 1 from rotating, and can transmit the torque of the upper portion of the hydraulic booster to a lower tool to provide rotating power for grinding shoes.
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 first section of the mandrel body 1 is provided with an oil pipe female buckle 9, and the hydraulic booster can be conveniently connected to a working pipe column without using a special adapter due to the use of a conventional thread buckle type.
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 invention is driven by hydraulic pressure in the pipe, has simple structure and convenient use, and can be widely used for the pressure of the grinding shoe for the operation of drilling and grinding the bridge plug of the horizontal well.
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 are included in the scope of 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 (10)
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 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 an 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).
9. Use of a hydraulic booster according to any of claims 1-8, characterized in that: the method comprises the following steps:
the method comprises the following steps: connecting a hydraulic booster to an underground working pipe column through an oil pipe female buckle (9) and a lower connector (8), starting a pump and putting the pipe column 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 column 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 starting point of a drilling pressure stroke, and the stroke of the outer cylinder (3) is in a full-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 along with the drilling of the grinding shoe, continuously moving a lower joint (8) downwards by a hydraulic booster under the hydraulic action in an oil pipe to drive an outer cylinder (3) and a sliding sleeve (2) to reach a bottom dead center, wherein the lower end of the sliding sleeve (2) is attached to the upper end of a piston (4), the drilling pressure is reduced, the hydraulic pressurization process is completed, the drill is timely fed, the drill feeding distance is the extension length of the outer cylinder (3), and the drilling and grinding of a 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.
10. The method of using a hydraulic booster of claim 9, wherein: in the third step, the pipe is continuously extended along with the continuous drilling of the mill shoe, when the suspension weight of the weight indicator is reduced to be smaller than a required bit pressure value or not, the bit pressure cannot be applied to the mill shoe by the self weight of the pipe column, the pump pressure is kept unchanged according to the pump pressure value recorded in the second step, the mill shoe is continuously drilled, the third step is repeated, 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 bit pressure is reduced, the hydraulic pressurization process is completed, at the moment, the drill is timely fed, and the drill feeding distance is the extension length of the outer cylinder (3).
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| CN202010801458.2A CN111911103B (en) | 2020-08-11 | 2020-08-11 | Hydraulic booster and use method thereof |
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|---|---|---|---|
| CN202010801458.2A CN111911103B (en) | 2020-08-11 | 2020-08-11 | Hydraulic booster and use method thereof |
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| CN111911103A true CN111911103A (en) | 2020-11-10 |
| CN111911103B CN111911103B (en) | 2023-10-20 |
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| CN109838216A (en) * | 2017-11-29 | 2019-06-04 | 江苏科技大学 | Electric hydaulic reinforcement setting tool for bridge plug |
| CN109779520A (en) * | 2018-07-27 | 2019-05-21 | 中国石油大学(华东) | A kind of pulse type spiral percussion drilling tool |
| CN109505551A (en) * | 2018-12-27 | 2019-03-22 | 贵州高峰石油机械股份有限公司 | A kind of underground fishing type hydraulic booster release device |
| CN210829147U (en) * | 2019-08-09 | 2020-06-23 | 新疆格瑞迪斯石油技术股份有限公司 | Sleeve pipe forging and milling tool |
| CN212743933U (en) * | 2020-08-11 | 2021-03-19 | 中国石油天然气集团有限公司 | Hydraulic booster |
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| CN111911103B (en) | 2023-10-20 |
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