CN114737920A - Drifting and scraping composite tool - Google Patents
Drifting and scraping composite tool Download PDFInfo
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- CN114737920A CN114737920A CN202110018392.4A CN202110018392A CN114737920A CN 114737920 A CN114737920 A CN 114737920A CN 202110018392 A CN202110018392 A CN 202110018392A CN 114737920 A CN114737920 A CN 114737920A
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- scraping
- drifting
- joint
- blade
- tool
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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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
Abstract
The application discloses drifting and scraping composite tool belongs to well workover technical field. This drifting scraping combination tool includes first joint, the second connects, the center tube, the shell body, the drifting gauge, the scraping blade, a spring, shearing sleeve pipe and spacing bolt, the drifting scraping combination tool that this application embodiment provided, when carrying out the workover, through the drifting gauge among the drifting scraping combination tool, realize the drifting operation, through the shearing sleeve pipe among the drifting scraping combination tool, cut spacing bolt, release spring, then the scraping blade pops out under the effort of spring, can laminate with the pit shaft inner wall, thereby accomplish the scraping operation, because this drifting scraping combination tool includes drifting structure and scraping structure, consequently this drifting scraping combination tool has the function of drifting operation and scraping operation concurrently, the operating efficiency of workover has been improved.
Description
Technical Field
The application relates to the technical field of well repair, in particular to a drifting and scraping combined tool.
Background
As oil field development progresses to the middle and late stages, workover operations are typically performed on the oil well. Workover refers to an operation of oil drilling and subsequent oil well maintenance to ensure that an oil well can be used smoothly. The well repair operation comprises drifting operation and scraping operation, wherein the drifting operation refers to utilizing an oil pipe or a drill rod to move in a shaft so as to ensure that the shaft is smooth, and the scraping operation refers to utilizing a scraping blade to eliminate solid wastes attached to the inner wall of the shaft.
At present, when workover treatment is carried out, a drifting tool is usually adopted to carry out drifting operation, and after the drifting operation is finished, a scraping tool is adopted to carry out scraping operation.
However, the above-mentioned drifting tool and scraping tool have a single well repairing function, and the drifting tool can only perform drifting operation, and the scraping tool can only perform scraping operation, thereby reducing the well repairing efficiency.
Disclosure of Invention
The embodiment of the application provides a drifting and scraping combined tool, which has the functions of drifting operation and scraping operation and can improve the operation efficiency of well repair. The technical scheme is as follows:
in one aspect, a drifting and scraping compound tool is provided, comprising a first joint, a second joint, a center tube, an outer housing, a drifting gauge, a scraping blade, a spring, a shear sleeve, and a stop bolt, wherein,
the first end of the first joint is used for being connected with an oil pipe, the second end of the first joint is provided with an internal thread and an external thread, the central pipe is connected with the first joint through the internal thread, and the outer shell is connected with the first joint through the external thread;
a first end of the second joint is connected with the outer shell, and a second end of the second joint is connected with the drift gauge;
at least one group of grooves are formed in the side face of the outer shell, each group of grooves comprises a plurality of grooves, a scraping blade is arranged in each groove, and the spring is arranged between the scraping blade and the outer shell;
the shearing sleeve is sleeved on the central pipe, the limiting bolt penetrates through the scraping blade and is arranged on the shearing sleeve, the limiting bolt is used for controlling the spring to be in a compressed state, when the shearing sleeve is under target pressure, the limiting bolt is sheared, and the scraping blade is ejected out through the spring.
In one possible implementation, the drifting and scraping compound tool further comprises a plurality of seal rubber rings, wherein the plurality of seal rubber rings comprise a first group of seal rubber rings and a second group of seal rubber rings;
the first group of sealing rubber rings are arranged between the shearing sleeve and the central pipe, and the second group of sealing rubber rings are arranged between the shearing sleeve and the outer shell.
In one possible implementation, the drift scraping compound tool further comprises a steel ball that blocks the top of the base pipe when the drift scraping compound tool is used for scraping.
In one possible implementation mode, the drifting and scraping composite tool further comprises at least one group of blade limiting assemblies, one scraping blade corresponds to one group of blade limiting assemblies, and one group of blade limiting assemblies comprises two blade pressing covers and two locking screws;
the blade gland is fixed in the groove of the outer shell through the locking screw, and the blade gland is used for limiting the scraping blade.
In one possible implementation, the scraping blade and the blade gland each have a shoulder-type structure, and the shoulder of the blade gland is located outside the shoulder of the scraping blade with a gap therebetween.
In a possible implementation manner, a top shoulder is provided at an end of the central tube close to the first joint, an end of the shear sleeve close to the first joint is attached to the top shoulder, and the top shoulder is used for limiting the shear sleeve.
In a possible implementation, the plurality of grooves are evenly distributed along a circumferential direction of the outer shell.
In a possible implementation manner, a pressure transmission hole is arranged on the first joint and is used for communicating a space between the inside of the first joint and one end, close to the first joint, of the shearing sleeve.
In one possible realization, the scraping blade is provided with a spring recess, in which the spring is mounted.
In one possible implementation, the second joint is a double female joint, a first end of the second joint is connected with the external thread of the outer shell, and a second end of the second joint is connected with the external thread of the drift size gauge.
The utility model provides a drifting scraping combination tool, when carrying out workover, through the drifting gauge tool among the drifting scraping combination tool, realize the drifting operation, through the shearing sleeve pipe among the drifting scraping combination tool, cut spacing bolt, release spring, then scrape the blade and pop out under the effort of spring, can laminate with the pit shaft inner wall, thereby accomplish the operation of scraping, because this drifting scraping combination tool includes drifting structure and scraping structure, consequently this drifting scraping combination tool has the function of drifting operation and scraping operation concurrently, the operating efficiency of workover has been improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In the drawings:
FIG. 1 is a composite drifting and scraping tool provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart of drifting scraping provided by an embodiment of the application;
fig. 3 is an enlarged schematic view of a shoulder provided in an embodiment of the present application.
Description of the figures
1: first joint, 101: top shoulder, 102: pressure transfer hole, 2: second joint, 3: center tube, 4: outer shell, 5: drift size gauge, 6: scraping blade, 601: second shoulder, 7: spring, 8: shear sleeve, 9: spacing bolt, 10: sealing rubber ring, 11: steel ball, 12: spacing subassembly of blade, 1201: blade gland, 12011: first shoulder, 1202: and locking the screw.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples consistent with certain aspects of the present application, as detailed in the appended claims.
The embodiment of the application provides a drifting and scraping composite tool. Referring to fig. 1, the drifting and scraping compound tool comprises a first joint 1, a second joint 2, a central pipe 3, an outer shell 4, a drifting gauge 5, a scraping blade 6, a spring 7, a shearing sleeve 8 and a limiting bolt 9, wherein a first end of the first joint 1 is used for connecting an oil pipe, a second end of the first joint 1 is provided with internal threads and external threads, the central pipe 3 is connected with the first joint 1 through the internal threads, and the outer shell 4 is connected with the first joint 1 through the external threads; the first end of the second joint 2 is connected with the outer shell 4, and the second end of the second joint 2 is connected with the drift size gauge 5; at least one group of grooves are formed in the side face of the outer shell 4, each group of grooves comprises a plurality of grooves, a scraping blade 6 is arranged in each groove, and a spring 7 is arranged between each scraping blade 6 and the outer shell 4; the shearing sleeve 8 is sleeved on the central tube 3, the limiting bolt 9 penetrates through the scraping blade 6 and is arranged on the shearing sleeve 8, the limiting bolt 9 is used for controlling the spring 7 to be in a compressed state, when the shearing sleeve 8 is under target pressure, the limiting bolt 9 is sheared, and the scraping blade 6 is ejected out through the spring 7.
Wherein the first joint 1 is an upper joint of the drifting and scraping composite tool. Optionally, the first joint 1 is made of a metal material or an alloy material, so that corrosion can be avoided, and the service life of the first joint 1 is prolonged. It should be noted that the first joint 1 is a double joint, and two ends of the first joint 1 are respectively used for connecting a body of the drifting and scraping composite tool and a workover aid tool, and the workover aid tool refers to an oil pipe or a drill pipe. The connection of the first joint 1 is explained in detail below:
the first end of the first joint 1 is the end provided with a single thread. In the embodiment of the present application, the first end of the first joint 1 is used for connecting a tubing or a drill pipe, and particularly, the first end of the first joint 1 is connected to the bottom of the tubing or the drill pipe, so that the drifting and scraping composite tool can enter a well bore along with the tubing or the drill pipe for drifting and scraping operations. Optionally, the first end of the first sub 1 is provided with an internal thread, by means of which the first sub 1 is connected with the tubing or the drill pipe. In this structure, oil pipe or drilling rod are connected through threaded connection's mode to the first end of first joint 1, not only are convenient for oil pipe or drilling rod connect and dismantle, can also ensure the compactness of connecting, have improved joint strength.
The second end of the first joint 1 is the end provided with the double thread. In the embodiment of the present application, the second end of the first joint 1 is connected with a base pipe 3 and an outer casing 4 of the drifting and scraping compound tool, specifically, the first joint 1 is connected with the base pipe 3 through an internal thread, and the first joint 1 is connected with the outer casing 4 through an external thread. In this structure, by providing the second end of the first joint 1 with the internal thread and the external thread, the mounting and dismounting of the center tube 3 and the outer housing 4 can be facilitated.
The second joint 2 is referred to as the lower joint of the drift shaving composite tool. Optionally, the second joint 2 is made of a metal material or an alloy material, so that corrosion can be avoided, and the service life of the second joint 2 is prolonged. The second joint 2 has a pipe body type structure. It should be noted that the second joint 2 is a double joint, and both ends of the second joint 2 are respectively used for connecting the outer shell 4 and the drift size gauge 5. Wherein a first end of the second sub 2 is adapted to be connected to the outer housing 4 and a second end of the second sub 2 is adapted to be connected to the drift gauge 5. Alternatively, the second connector 2 is a double female connector, i.e. both the first end of the second connector 2 and the second end of the second connector 2 are provided with an internal thread. In operation, a first end of the second sub 2 is connected to the external thread of the outer housing 4 and a second end of the second sub 2 is connected to the external thread of the drift gauge 5. In this configuration, the drift gauge 5 is attached to the outer housing 4 to form an integral tool for facilitating drifting and scraping operations.
The central tube 3 is a central tube body of the drifting and scraping composite tool. The central tube 3 is a hollow tube body type structure. Optionally, the material of center tube 3 is metal material or alloy material, can avoid corroding, has prolonged the life of center tube 3. In this configuration, the nesting of the shear sleeve 8 is facilitated by the provision of the central tube 3.
The outer shell 4 is an outer pipe body of the drifting and scraping composite tool. In the present embodiment, the outer housing 4 is used to provide at least one set of a plurality of grooves, and the scraping blades 6 are provided in the at least one set of a plurality of grooves. Optionally, the body of the outer casing 4 comprises at least one row, the at least one set of grooves being provided on the at least one row. For example, the body of the outer casing 4 comprises two rows, each row being provided with a set of grooves. Alternatively, the shape of the recess is rectangular, facilitating the placement of the scraping blade 6. In the embodiment of the application, through set up multiunit, a plurality of recess on shell 4, can realize that 360 scraping of pit shaft inside do not have the dead angle, ensure the comprehensive nature of scraping.
The drift gauge 5 is a special tool for detecting the internal drift diameter size of a downhole tubular. In this application embodiment, drift size gauge 5 is used for detecting whether the interior latus rectum of pit shaft accords with the standard to whether the inspection pit shaft can smoothly unobstructed underground go into various downhole equipment. The specific inspection process comprises the following steps: and (3) lowering the drift size gauge 5 into the shaft, and lifting and lowering for many times, wherein if the drift size gauge 5 can smoothly pass through the shaft, the inner drift diameter of the shaft is in accordance with the standard, and if the drift size gauge 5 cannot smoothly pass through the shaft, the inner drift diameter of the shaft is in accordance with the standard. Optionally, the outer diameter of the drift gauge 5 is slightly less than the inner diameter of the wellbore, e.g., the outer diameter of the drift gauge 5 is 4-7 mm less than the inner diameter of the wellbore. It should be noted that the drift size gauge 5 provided in the embodiment of the present application may be selected according to the specification of the wellbore to be subjected to drift operation, so as to meet the drift requirement.
In the present embodiment, the scraping blades 6 are used to remove solid waste remaining on the inner wall of the wellbore for unobstructed underground access to various downhole equipment. Alternatively, the material of the scraping blade 6 is a steel alloy material, which can ensure the scraping effect. Alternatively, the scraping blade 6 is rectangular in shape. In practice, the scraping blade 6 is placed in the recess of the outer housing 4 with the cutting edge of the scraping blade 6 facing the inner wall of the wellbore and the back of the scraping blade 6 facing the inner wall of the recess. When the scraping blade 6 performs the scraping operation, the cutting edge of the scraping blade 6 is attached to the inner wall of the wellbore to ensure the scraping effect.
In the embodiment of the present application, the spring 7 is used for controlling the release of the scraping blade 6, specifically, in the initial state of the spring 7, since the limiting bolt 9 passes through the scraping blade 6 and is disposed on the shearing sleeve 8, the scraping blade 6 is limited in the groove of the outer housing 4, and the spring 7 is compressed by the scraping blade 6, when the limiting bolt 9 is sheared, the spring 7 is released, at this time, the spring 7 begins to expand, and pushes the scraping blade 6 to expand outward along the radial direction, so that the scraping blade 6 is ejected and attached to the inner wall of the shaft under the action of the spring 7, and further, along with the movement of the drifting and scraping composite tool, the scraping work on the inner wall of the shaft is completed. Alternatively, the spring 7 has a cylindrical structure.
In the present embodiment, the shear sleeve 8 is used to shear the limit bolt 9 to release the spring 7 and thus the scraping blade 6. Specifically, when the shear sleeve 8 is subjected to the target pressure, the limit bolt 9 is sheared, and the scraping blade 6 is ejected by the spring 7. The target pressure is a pressure capable of controlling the movement of the shear sleeve 8. Alternatively, the target pressure may be set by the skilled person, for example, the target pressure may be of the order of 20 Mpa. The embodiment of the application subsequently adopts the water injection pressure to provide the target pressure. In this configuration, the shear pin 9 is controlled by providing the shear sleeve 8, and the operation of scraping can be controlled, and the operation is simple and quick.
In the embodiment of the present application, the limit bolt 9 is used for limiting the spring 7. In the implementation, be provided with first through-hole on the scraping blade 6, and be provided with the second through-hole that corresponds with this first through-hole on the recess of shell body 4, when installing this spacing bolt 9, place this scraping blade 6 in the recess of shell body 4, make first through-hole and second through-hole align, pass first through-hole and second through-hole with this spacing bolt 9 in proper order, in the screw on the lateral wall of shearing sleeve 8 through the threaded fixation, at this moment, spacing bolt 9 is installed and is finished, in the in-process that the compound instrument of scraping in the drifting is carried out the work of scraping, when spacing bolt 9 receives the extrusion of shearing sleeve 8, can be cut.
In the implementation, when drifting operation is carried out, the drifting and scraping composite tool is connected to the bottom of a drill rod or an oil pipe through the first connector 1 of the drifting and scraping composite tool, the drill rod or the oil pipe connected with the drifting and scraping composite tool is placed into a shaft, and a drifting gauge 5 in the drifting and scraping composite tool is used for lifting and placing for many times until the drifting and scraping composite tool can smoothly pass through the shaft, so that the inner drift diameter of the shaft meets the standard, and the drifting operation is completed at this moment. When scraping operation is carried out, water is injected into the shaft by using a cement pump truck, the shear sleeve 8 is enabled to shear the limit bolt 9 under the action of hydraulic pressure, then the spring 7 is ejected out, the scraping blade 6 is released, and the scraping blade 6 is enabled to be attached to the inner wall of the shaft under the action of the spring 7, so that the scraping operation is completed. The drifting and scraping combined tool provided by the embodiment of the application is used for realizing the drifting operation by the drifting gauge 5 in the drifting and scraping combined tool when the workover operation is carried out, the shearing sleeve 8 in the drifting and scraping combined tool is used for shearing the limiting bolt 9, the spring 7 is released, the scraping blade 6 is popped out under the acting force of the spring 7 and can be attached to the inner wall of a shaft, the scraping operation is completed, and the drifting and scraping combined tool comprises a drifting structure and a scraping structure, so that the drifting and scraping combined tool has the functions of the drifting operation and the scraping operation, and the work efficiency of the workover operation is improved.
In a possible implementation, the drifting and scraping compound tool further comprises a plurality of sealing rubber rings 10, wherein the plurality of sealing rubber rings 10 comprise a first group of sealing rubber rings and a second group of sealing rubber rings, the first group of sealing rubber rings is arranged between the shearing sleeve 8 and the central pipe 3, and the second group of sealing rubber rings is arranged between the shearing sleeve 8 and the outer shell 4. In this application embodiment, through setting up first group's sealed rubber ring between shearing sleeve pipe 8 and center tube 3, can seal shearing sleeve pipe 8 and center tube 3, get into when avoiding follow-up water injection and cut in sleeve pipe 8, through setting up second group sealed rubber ring between shearing sleeve pipe 8 and shell body 4, can seal shearing sleeve pipe 8 and shell body 4, get into in the shell body 4 when avoiding follow-up water injection.
Optionally, a first set of sealing rubber rings is mounted on the side wall of the center tube 3 to act as a seal for the center tube 3 and the shear sleeve 8. A second set of sealing rubber rings is mounted on the side walls of the shear sleeve 8 to act to seal the shear sleeve 8 to the outer housing 4. Alternatively, the number of the first set of sealing rubber rings is determined according to the length of the central tube 3, for example, the number of the first set of sealing rubber rings may be 8, and the number of the second set of sealing rubber rings is determined according to the length of the shearing sleeve 8, for example, the number of the second set of sealing rubber rings is 8.
In one possible implementation, the drifting shaving composite tool further comprises a steel ball 11, and when the drifting shaving composite tool is used for shaving, the steel ball 11 seals off the top of the base pipe 3, further sealing the top of the base pipe 3.
Optionally, the steel ball 11 has a diameter larger than the inner diameter of the central tube 3 to ensure a complete seal of the central tube 3.
The process is a process that the steel ball 11 blocks the top of the central tube 3 when the drifting and scraping combined tool is used for scraping. It should be noted that the steel ball 11 is placed on top of the base pipe 3 in a free state when the drifting and scraping combination tool is not in operation.
In the implementation, when the drifting operation is carried out, the steel ball 11 in the drifting and scraping combined tool is taken out for standby, and when the scraping operation is carried out, the steel ball 11 is put into a drill rod or an oil pipe, so that the steel ball 11 is located on the top of the central pipe 3 to seal the top of the central pipe 3, and the purpose of sealing the central pipe 3 is achieved.
In a possible implementation manner, the drifting and scraping compound tool further comprises at least one group of blade limiting assemblies 12, one scraping blade 6 corresponds to one group of blade limiting assemblies 12, one group of blade limiting assemblies 12 comprises two blade glands 1201 and two locking screws 1202, the blade glands 1201 are fixed in the grooves of the outer shell 4 through the locking screws 1202, and the blade glands 1201 are used for limiting the scraping blade 6.
Optionally, a through hole is provided on the blade gland 1201, and when the blade gland 1201 is installed, a locking screw 1202 is inserted through the through hole of the blade gland 1201 to fix the blade gland 1201 in the groove.
In a possible implementation manner, the scraping blade 6 and the blade press cover 1201 both have a shoulder type structure, fig. 3 is an enlarged schematic view of a shoulder provided by the embodiment of the present application, and referring to fig. 3, the first shoulder of the blade press cover 1201 is located outside the second shoulder of the scraping blade 6, and a gap exists between the first shoulder and the second shoulder of the scraping blade 6.
The shoulder type structure refers to a structure with a right-angle shoulder arranged on the end face. It should be noted that fig. 3 illustrates an example in which the drifting and scraping compound tool is not in operation, in which the scraping blade 6 is in a retracted state and a gap exists between the first shoulder 12011 and the second shoulder 601, and in which the drifting and scraping compound tool is in operation, in which the scraping blade 6 is in a released state and the first shoulder 12011 and the second shoulder 601 are in abutment.
In the implementation, when carrying out the scraping operation, release scraping blade 6 through spring 7, make scraping blade 6 and shaft inner wall laminating under spring 7's effect, scraping blade 6 was laminated with the shoulder surface of blade gland 1201 towards the recess inner wall towards the shoulder surface of shaft inner wall this moment for scraping blade 6 when carrying out the scraping operation, can also avoid dropping of scraping blade 6, ensures the normal clear of scraping operation and ensures the complete of drifting scraping combination tool.
Optionally, the blade gland 1201 is located outside the groove of the outer shell 4, and the blade gland 1201 is attached to the inner wall of the groove of the outer shell 4, so that the installation firmness of the blade gland 1201 can be enhanced, and the blade gland 1201 is ensured to limit the scraping blade 6.
In a possible implementation, the end of the central tube 3 close to the first joint 1 is provided with a top shoulder 101, the end of the shear sleeve 8 close to the first joint 1 abuts the top shoulder 101, and the top shoulder 101 is used to limit the shear sleeve 8. In this structure, through setting up top shoulder 101, make shear sleeve 8 and the shoulder surface laminating of first joint 1, not only can play the effect that prevents shear sleeve 8 motion, can also ensure shear sleeve 8's connection stability, ensure shear sleeve 8's bearing performance and ultimate antitorque ability.
In a possible realization, the plurality of grooves are evenly distributed in the circumferential direction of the outer shell 4. Through evenly setting up a plurality of recesses, can ensure the comprehensive nature of scraping.
Alternatively, a plurality of grooves are uniformly provided at equal angles in the circumferential direction of the outer shell 4, that is, one groove is provided at every target angle. Wherein the target angle is a predetermined angle, for example, the target angle is 120 °, one groove is provided every 120 ° along the circumferential direction of the outer shell 4, that is, 3 grooves are provided along the circumference of the outer shell 4. It will be understood that when the body of the outer casing 4 comprises two rows of 3 grooves each, a total of 6 grooves are provided on the outer casing 4.
In a possible implementation manner, the first joint 1 is provided with a pressure transmission hole 102, and the pressure transmission hole 102 is used for communicating a space between the inside of the first joint 1 and one end of the shearing sleeve 8 close to the first joint 1.
In the implementation, the water injection pressure is controlled to rise to the target pressure through the cement pump truck, the hydraulic pressure is applied to the shearing sleeve 8 through the pressure transmission hole 102 of the first connector 1, the shearing sleeve 8 moves, the limiting bolt 9 is sheared, and the scraping blade 6 is ejected through the spring 7 so as to carry out the subsequent scraping operation.
In a possible realisation, the scraping blade 6 is provided with a spring recess, in which the spring 7 is mounted. Through setting up the spring recess, not only the installation and the dismantlement of spring 7 of being convenient for can also improve spring 7's connection stability and fastness.
Optionally, the spring groove is cylindrical in shape. Through setting up cylindrical recess, install cylindrical spring, can ensure the connection stability and the fastness of spring 7.
The drifting and scraping combined tool provided by the embodiment of the application is used for realizing drifting operation through the drifting gauge 5 in the drifting and scraping combined tool when workover operation is carried out, the shearing sleeve 8 in the drifting and scraping combined tool is used for shearing the limiting bolt 9, the spring 7 is released, the scraping blade 6 is popped out under the acting force of the spring 7 and can be attached to the inner wall of a shaft, and the scraping operation is finished. And, through setting up the rubber gasket 10, can play the sealed effect between the body, through setting up steel ball 11, further seal the top of center tube 3, make during the pressurization, pressure passes through the pressure transmission hole 102 on the first joint 1, all act on shearing sleeve 8, make shearing sleeve 8 take place to remove, and then cut spacing bolt 9, pop out scraping blade 6 through spring 7, in order to carry out the scraping operation, through setting up spacing subassembly 12 of blade, make scraping blade 6 when carrying out the scraping operation, avoid dropping of scraping blade 6, ensure the normal clear of scraping operation and ensure the complete of drifting scraping combination tool.
Referring to fig. 2, fig. 2 is a schematic flow chart of the drifting shaving composite tool provided in the embodiment of the present application, and the embodiment includes:
201. and taking out the steel ball 11 in the drifting and scraping composite tool.
In a possible implementation mode, when the preparation operation of the well repairing operation is carried out, the steel ball 11 in the drifting and scraping composite tool is taken out for standby, and the influence of the steel ball 11 on the early-stage well repairing operation (such as the drifting operation) of the well is avoided.
202. And selecting a drift size gauge 5 with a target size, and connecting the drift size gauge 5 with the outer shell 4.
In a possible implementation mode, after the steel ball 11 in the drifting and scraping composite tool is taken out, the drifting gauge 5 with the corresponding size is selected according to the specification of a shaft to be subjected to workover treatment, and the selected drifting gauge 5 is connected to the outer shell 4 through the second connector 2 so as to perform subsequent drifting operation.
203. The drifting and scraping composite tool is connected to the bottom of a drill pipe or an oil pipe.
In a possible implementation, after the drifting gauge 5 is connected with the outer shell 4, the drifting and scraping composite tool is connected to the bottom of a drill pipe or an oil pipe through the first joint 1, so that the drifting and scraping composite tool enters the deep part of a shaft along with the drill pipe or the oil pipe.
204. And (3) putting a drill rod or an oil pipe connected with the drifting and scraping composite tool into the shaft, and lifting and putting down for many times until the drifting and scraping composite tool can smoothly pass through the shaft.
In a possible implementation mode, the drifting and scraping composite tool is connected to the bottom of a drill rod or an oil pipe, the drill rod or the oil pipe connected with the drifting and scraping composite tool is placed into a shaft and lifted and placed for many times, when the drifting and scraping composite tool can smoothly pass through the shaft and is free of blockage, the inner drift diameter of the shaft is in accordance with the standard, and drifting operation is completed at the moment.
Optionally, a drill pipe or tubing connected to the drift shave tool is lowered into the wellbore at the target speed. Wherein the target speed is a preset speed. In the process, the lowering speed of the drifting and scraping composite tool during drifting is controlled through speed limitation, and smooth drifting is guaranteed.
Optionally, a drill pipe or tubing connected to the drift shave tool is lowered to a target depth within the wellbore. Wherein, the target depth is a preset depth.
205. And performing well washing operation on the shaft through a cement pump truck.
In one possible implementation, a water injection line is connected to the surface and water is injected into the wellbore by a cement pump truck for cyclic well flushing.
Optionally, injecting water into the shaft by a cement pump truck, and performing circulating well washing on the shaft until the well is circularly washed for more than one week. Wherein, one week refers to one cycle of well washing.
Optionally, the injection pressure in the wellbore is recorded in real time during the cyclic flushing, so that a technician can know the injection pressure in the wellbore in real time.
206. In the well washing process, a steel ball 11 is put into a drill rod or an oil pipe, and the steel ball 11 is controlled to block the top of the central pipe 3.
In a possible implementation mode, in the well washing operation process, a wellhead pipeline is disassembled, the steel ball 11 is thrown into a drill rod or an oil pipe from the wellhead, the wellhead pipeline is reconnected, the cement pump truck is continuously utilized for circular well washing until the steel ball 11 is located at the top of the central pipe 3, and the steel ball 11 blocks the top of the central pipe 3 under the action of pump pressure to realize complete sealing with the central pipe 3.
207. The cement pump truck controls water injection pressure to be target pressure, when the shearing sleeve 8 is subjected to the target pressure, the limiting bolt 9 is sheared, and the scraping blade 6 is ejected out through the spring 7.
The target pressure is a pressure at which the movement of the shear sleeve 8 can be controlled, and is, for example, 20 MPa. In the embodiment of the application, the water injection pressure is adopted to provide the target pressure.
In a possible implementation manner, when the steel ball 11 and the central pipe 3 are sealed, the cement pump truck controls the water injection pressure to rise to a target pressure, the pressure transmission hole 102 of the first connector 1 is utilized to apply hydraulic pressure on the shearing sleeve 8, so that the shearing sleeve 8 moves, the limiting bolt 9 is further sheared, the spring 7 is released, and the scraping blade 6 is ejected out under the action of the spring 7.
In the process, the steel ball 11 is arranged, so that the steel ball plugs the top of the central tube 3, the water injection pressure can be enabled to act on the first joint 1 completely, and then the pressure transfer hole 102 of the first joint 1 is utilized, so that the water injection pressure can act on the shearing sleeve 8 completely, the operation is simple and convenient, and the efficiency of scraping operation is improved.
208. The scraping operation is performed on the shaft by the scraping blades 6.
In a possible implementation mode, after the scraping blade 6 is ejected out through the spring 7, the scraping blade 6 is attached to the inner wall of the shaft under the action of the spring 7, and the scraping operation on the inner wall of the shaft is started.
Optionally, after the scraping of the scraping blade 6 meets the scraping condition, the water injection pipeline on the ground is removed, the drifting and scraping composite tool is repeatedly lifted and lowered for a plurality of times in a preset well section until no blockage is displayed, and then the casing scraping operation is completed.
Wherein the scraping condition may be that the scraping time period of the scraping blade 6 reaches a certain time period, or the scraping condition may be that the scraping resistance of the scraping blade 6 decreases to a certain resistance. The present embodiment does not limit the scraping conditions of the scraping blades 6.
Optionally, after the drifting and scraping composite tool finishes the scraping operation of the casing, the cement pump truck can be reused to wash the well for more than one week so as to clean solid wastes produced after the scraping operation. After the well washing is finished, the drill rod or the oil pipe in the shaft is lifted out, and then the drifting and scraping composite tool is brought out, so far, the drifting and scraping composite tool completes the drifting and scraping operations at the same time.
The drifting and scraping combined tool provided by the embodiment of the application is used for realizing the drifting operation, the shearing sleeve 8 in the drifting and scraping combined tool is used for shearing the limiting bolt 9, the spring 7 is released, the scraping blade 6 is popped out under the acting force of the spring 7 and can be attached to the inner wall of a shaft, so that the scraping operation is completed, the drifting and scraping combined tool comprises the drifting structure and the scraping structure, and the drifting and scraping combined tool has the functions of the drifting operation and the scraping operation, the working efficiency of the workover is improved, the labor intensity of workers is reduced, and the workover operation requirement is met.
All the above optional technical solutions may be combined arbitrarily to form optional embodiments of the present application, and are not described herein again.
The present application is intended to cover various modifications, alternatives, and equivalents, which may be included within the spirit and scope of the present application.
Claims (10)
1. A drifting and scraping combined tool is characterized by comprising a first joint (1), a second joint (2), a central pipe (3), an outer shell (4), a drifting gauge (5), scraping blades (6), a spring (7), a shearing sleeve (8) and a limiting bolt (9), wherein,
the first end of the first joint (1) is used for connecting an oil pipe, the second end of the first joint (1) is provided with an internal thread and an external thread, the central pipe (3) is connected with the first joint (1) through the internal thread, and the outer shell (4) is connected with the first joint (1) through the external thread;
the first end of the second joint (2) is connected with the outer shell (4), and the second end of the second joint (2) is connected with the drift gauge (5);
at least one group of grooves are formed in the side face of the outer shell (4), each group of grooves comprises a plurality of grooves, a scraping blade (6) is arranged in one groove, and the spring (7) is arranged between the scraping blade (6) and the outer shell (4);
shearing sleeve pipe (8) suit is in on center tube (3), stop bolt (9) pass scrape blade (6) and set up on shearing sleeve pipe (8), stop bolt (9) are used for control spring (7) are compression state, work as when shearing sleeve pipe (8) receive target pressure, cut stop bolt (9), through spring (7) pop out scrape blade (6).
2. The drift scraping compound tool of claim 1, further comprising a plurality of packing rings (10), said plurality of packing rings (10) comprising a first set of packing rings and a second set of packing rings;
the first group of sealing rubber rings are arranged between the shearing sleeve (8) and the central pipe (3), and the second group of sealing rubber rings are arranged between the shearing sleeve (8) and the outer shell (4).
3. The drifting scraping compound tool of claim 1, further comprising a steel ball (11), wherein the steel ball (11) blocks the top of the base pipe (3) when the drifting scraping compound tool is used for scraping.
4. The drifting shaving composite tool of claim 1, further comprising at least one set of blade retention assemblies (12), one shaving blade (6) corresponding to one set of blade retention assemblies (12), one set of blade retention assemblies (12) comprising two blade glands (1201) and two locking screws (1202);
the blade gland (1201) is fixed in a groove of the outer shell (4) through the locking screw (1202), and the blade gland (1201) is used for limiting the scraping blade (6).
5. The drifting scraping compound tool of claim 4, characterized in that the scraping blade (6) and the blade gland (1201) each have a shoulder type structure, and the first shoulder (12011) of the blade gland (1201) is located outside the second shoulder (601) of the scraping blade (6) with a clearance from the second shoulder (601) of the scraping blade (6).
6. The drifting scraping compound tool of claim 1, characterized in that the end of the base pipe (3) close to the first joint (1) is provided with a top shoulder (101), the end of the shear sleeve (8) close to the first joint (1) abutting the top shoulder (101), the top shoulder (101) being used to stop the shear sleeve (8).
7. The drifting scraping compound tool of claim 1, wherein the plurality of grooves are evenly distributed in a circumferential direction of the outer housing (4).
8. The drifting scraping compound tool of claim 1, characterized in that a pressure transfer hole (102) is arranged on the first joint (1), and the pressure transfer hole (102) is used for communicating a space between the interior of the first joint (1) and one end of the shearing sleeve (8) close to the first joint (1).
9. Drifting and scraping complex tool according to claim 1, characterized in that the scraping blade (6) is provided with a spring groove, in which the spring (7) is mounted.
10. The drifting scraping compound tool of claim 1, wherein the second joint (2) is a double female joint, a first end of the second joint (2) is connected with an external thread of the outer housing (4), and a second end of the second joint (2) is connected with an external thread of the drifting gauge (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018392.4A CN114737920A (en) | 2021-01-07 | 2021-01-07 | Drifting and scraping composite tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110018392.4A CN114737920A (en) | 2021-01-07 | 2021-01-07 | Drifting and scraping composite tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114737920A true CN114737920A (en) | 2022-07-12 |
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ID=82274158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110018392.4A Pending CN114737920A (en) | 2021-01-07 | 2021-01-07 | Drifting and scraping composite tool |
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| Country | Link |
|---|---|
| CN (1) | CN114737920A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648447A (en) * | 1985-09-11 | 1987-03-10 | Bowen Tools, Inc. | Casing scraper |
| CN204113225U (en) * | 2014-09-09 | 2015-01-21 | 中国石油天然气股份有限公司 | Spring sleeve pipe drifting scraper |
| CN105625986A (en) * | 2016-03-10 | 2016-06-01 | 宝鸡市奥通石油机械有限责任公司 | Scraper-controllable multifunctional wall scraping device |
| CN205823237U (en) * | 2016-06-13 | 2016-12-21 | 新疆如通石油技术服务有限公司 | A kind of controllable type plug wall scraper |
| CN206129240U (en) * | 2016-10-27 | 2017-04-26 | 新疆华油油气工程有限公司 | Multi -functional wall instrument of scraping of hydraulic pressure |
-
2021
- 2021-01-07 CN CN202110018392.4A patent/CN114737920A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4648447A (en) * | 1985-09-11 | 1987-03-10 | Bowen Tools, Inc. | Casing scraper |
| CN204113225U (en) * | 2014-09-09 | 2015-01-21 | 中国石油天然气股份有限公司 | Spring sleeve pipe drifting scraper |
| CN105625986A (en) * | 2016-03-10 | 2016-06-01 | 宝鸡市奥通石油机械有限责任公司 | Scraper-controllable multifunctional wall scraping device |
| CN205823237U (en) * | 2016-06-13 | 2016-12-21 | 新疆如通石油技术服务有限公司 | A kind of controllable type plug wall scraper |
| CN206129240U (en) * | 2016-10-27 | 2017-04-26 | 新疆华油油气工程有限公司 | Multi -functional wall instrument of scraping of hydraulic pressure |
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