CN113338917B

CN113338917B - Wing type positioner

Info

Publication number: CN113338917B
Application number: CN202110607698.3A
Authority: CN
Inventors: 王景浩; 费春辉; 孟文波; 赵永顺; 李伟智; 苏剑波
Original assignee: China Oilfield Services Ltd
Current assignee: China Oilfield Services Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-08-02
Anticipated expiration: 2041-06-01
Also published as: CN113338917A

Abstract

A wing-in-blade positioner, comprising: a throttling nipple; the lower end of the guide cylinder is axially movably sleeved on the throttling nipple, and an avoiding port is arranged on the side wall of the guide cylinder and is positioned above the throttling nipple; the piston rod is positioned in the guide cylinder, and the lower end of the piston rod is fixedly connected with the upper end of the throttling nipple; the cutter body is arranged corresponding to the avoiding opening and is hinged between the piston rod and the guide cylinder, and the guide cylinder can move up and down relative to the cutter body and the piston rod; the lower end of the mandrel is fixedly connected with the upper end of the piston rod, the upper end of the guide cylinder is sleeved at the lower end of the mandrel in an axially movable manner, a first hydraulic cavity with variable axial length is formed between the mandrel and the guide cylinder, and a first through hole is formed in the side wall of the mandrel; and the resetting piece is pressed between the upper end of the mandrel and the upper end of the guide cylinder. This wing formula locator can go into the well under the non-location state, and rethread liquid pressure drives during the location and realizes opening the location, effectively reduces the risk of entering the well process.

Description

Wing type positioner

Technical Field

This paper relates to oil development technical field, more specifically relates to a wing formula locator.

Background

Because coiled tubing can receive the influence of bucking in the well-entering in-process, the actual depth of instrument in the pit can not accurate measurement, so when carrying out positioning operation, often carry out accurate positioning through the meter locator.

Conventional locators: the slips are always in an open state by adopting the support of the compression spring pieces. When the shaft contains more impurities, the cavity is easily blocked, so that the shaft is difficult to lift and lower to meet the blockage.

Logging formula locator: the locator needs to transmit electric signals by means of cables or optical cables, is accurate in location, but needs to be matched with a logging matching instrument on the ground for use, and is high in cost. When liquid passes through the interior of the coiled tubing, the area of the liquid channel can be reduced by the built-in cable and the built-in optical cable, and operation parameters are influenced.

Disclosure of Invention

The embodiment of the invention provides a blade type positioner which can enter a well in a non-positioning state, and is driven by liquid pressure to realize opening positioning during positioning, so that the risk in the well entering process is effectively reduced.

The embodiment of the invention provides a blade type positioner, which is provided with a liquid supply channel which is communicated up and down, and comprises: a throttling nipple; the guide cylinder is positioned above the throttling short section, the lower end of the guide cylinder is sleeved on the throttling short section in an axially movable manner, and an avoidance port is formed in the side wall of the guide cylinder and positioned above the throttling short section; the piston rod is positioned in the guide cylinder and above the throttling nipple, and the lower end of the piston rod is fixedly connected with the upper end of the throttling nipple; the cutter body is arranged corresponding to the avoiding opening and is hinged between the piston rod and the guide cylinder, and the guide cylinder can move up and down relative to the cutter body and the piston rod; the mandrel is positioned above the piston rod, the lower end of the mandrel is fixedly connected with the upper end of the piston rod, the upper end of the guide cylinder is axially movably sleeved at the lower end of the mandrel, a first hydraulic cavity with variable axial length is formed between the mandrel and the guide cylinder, a first through hole is formed in the side wall of the mandrel, and the first hydraulic cavity is communicated with the liquid supply channel through the first through hole; the resetting piece is pressed between the upper end of the mandrel and the upper end of the guide cylinder, and when the axial length of the first hydraulic cavity is increased, the guide cylinder moves upwards to compress the resetting piece; the liquid supply channel comprises an inner hole of the mandrel, an inner hole of the piston rod and an inner hole of the throttling nipple.

In an exemplary embodiment, the blade locator further comprises: and the pressure difference forming assembly is positioned below the throttling nipple, the lower end of the throttling nipple is fixedly connected with the upper end of the pressure difference forming assembly, and the liquid supply channel comprises an inner hole of the pressure difference forming assembly.

In an exemplary embodiment, the differential pressure forming assembly includes: a lower joint; and the sliding sleeve is fixedly sleeved in the lower joint, and the liquid supply channel further comprises an inner hole surrounded by the lower joint and the sliding sleeve.

In an exemplary embodiment, a side wall of the lower joint is provided with a circulation hole, the sliding sleeve is axially movably fixed in the lower joint through a first shearing piece, and the side wall of the sliding sleeve blocks the circulation hole; when the first shearing piece is sheared, the sliding sleeve moves downwards to release the circulating hole, so that the circulating hole is communicated with the liquid supply channel.

In an exemplary embodiment, the blade locator further comprises: the cutter rest is positioned on the inner side of the guide cylinder and fixedly sleeved on the piston rod, the upper end of the cutter body is hinged to the lower end of the cutter rest, and the lower end of the cutter body extends into the avoiding opening.

In an exemplary embodiment, the tool holder is fixedly sleeved on the piston rod in an axially movable manner through a second shearing part, a second hydraulic cavity with a variable axial length is arranged between the tool holder and the piston rod, a second through hole is arranged on the piston rod, and the second hydraulic cavity is communicated with the liquid supply channel through the second through hole; when the second shearing piece is sheared, liquid in the liquid supply channel enters the second hydraulic cavity from the second through hole and pushes the tool rest to move upwards.

In an exemplary embodiment, a driving inclined plane is arranged between the cutter body and the throttling short joint and between the cutter body and the lower mouth wall of the avoiding mouth in a matching way.

In an exemplary embodiment, the blade locator further comprises: the upper joint is positioned above the mandrel, the lower end of the upper joint is fixedly sleeved at the upper end of the mandrel, the upper end of the resetting piece is pressed at the lower end of the upper joint, and the liquid supply channel further comprises an inner hole of the upper joint.

In an exemplary embodiment, the blade locator further comprises: the upper end of the protection barrel is fixedly connected with the lower end of the upper joint, the lower end of the protection barrel is sleeved at the upper end of the guide barrel, and the resetting piece is hidden between the protection barrel and the mandrel.

In an exemplary embodiment, the reset piece is a coil spring, and the cutter body and the avoidance port are arranged at intervals along the circumferential direction.

According to the wing-type positioner provided by the embodiment of the invention, the cutter body is positioned in the avoiding opening and is in a retracted state in the well entering process, the wing-type positioner can smoothly enter the well, and the cutter body is driven by liquid pressure to extend out of the avoiding opening for opening and positioning during positioning, so that the risk of the wing-type positioner in the well entering process is effectively reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention.

FIG. 1 is a schematic cross-sectional view of a blade positioner according to an embodiment of the present invention;

FIGS. 2 and 3 are schematic views of a portion of the wing-type positioner of FIG. 1;

FIG. 4 is a schematic cross-sectional view of the wing positioner of FIG. 1 in another use state;

FIG. 5 is a schematic cross-sectional view of the blade positioner of FIG. 1 in a further use configuration;

FIG. 6 is a schematic cross-sectional view of the wing positioner of FIG. 1 in a further use state;

FIG. 7 is a schematic perspective view of the throttle nipple in FIG. 1;

FIG. 8 is a perspective view of the guide cylinder of FIG. 1;

fig. 9 is a perspective view of the tool holder of fig. 1.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

100 liquid supply channels, 200 throttling short joints, 300 guide cylinders, 310 avoidance ports, 400 piston rods, 410 second through holes, 500 cutter bodies, 600 mandrels, 610 first through holes, 700 first hydraulic cavities, 800 spiral springs, 900 lower joints, 910 circulation holes, 1000 sliding sleeves, 1100 cutter holders, 1200 second hydraulic cavities, 1300 upper joints, 1400 protecting sleeves, 1500 underground pipe column step surfaces, 1600 first shearing pieces, 1700 second shearing pieces and 1800 steel balls.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

As shown in fig. 1 to 6, the blade type positioner according to the embodiment of the present invention includes a liquid supply channel 100 that is vertically through, and includes: a choke nipple 200 (shown in fig. 7); the guide cylinder 300 (shown in fig. 8) is located above the throttle nipple 200, the lower end of the guide cylinder 300 is axially movably sleeved on the throttle nipple 200, an avoiding port 310 is arranged on the side wall of the guide cylinder 300, and the avoiding port 310 is located above the throttle nipple 200; the piston rod 400 is positioned in the guide cylinder 300 and above the throttling nipple 200, and the lower end of the piston rod 400 is fixedly connected with the upper end of the throttling nipple 200; a cutter body 500 which is provided corresponding to the avoidance port 310 and is hinged between the piston rod 400 and the guide cylinder 300, and the guide cylinder 300 can move up and down relative to the cutter body 500 and the piston rod 400; the mandrel 600 is positioned above the piston rod 400, the lower end of the mandrel 600 is fixedly connected with the upper end of the piston rod 400, the upper end of the guide cylinder 300 is axially movably sleeved at the lower end of the mandrel 600, a first hydraulic cavity 700 with variable axial length is formed between the mandrel 600 and the guide cylinder 300, a first through hole 610 is formed in the side wall of the mandrel 600, and the first hydraulic cavity 700 is communicated with the liquid supply channel 100 through the first through hole 610; the reset piece is pressed between the upper end of the mandrel 600 and the upper end of the guide cylinder 300, and when the axial length of the first hydraulic cavity 700 is increased, the guide cylinder 300 moves upwards to compress the reset piece; wherein, the liquid supply channel 100 comprises an inner hole of the mandrel 600, an inner hole of the piston rod 400 and an inner hole of the throttle nipple 200.

This wing formula locator goes into the well in-process cutter body 500 is located and dodges being in the state of packing up in mouthful 310, and wing formula locator can go into the well smoothly, and rethread liquid pressure drive makes cutter body 500 stretch out and dodges mouthful 310 and open the location during the location, has effectively reduced the risk of wing formula locator income well process.

Illustratively, the return member is a coil spring 800; the cutter body 500 and the avoiding opening 310 comprise a plurality of groups which are arranged at intervals in the circumferential direction; the piston rod 400, the mandrel 600 and the throttle nipple 200 may be integrally formed or may be separately connected.

In an exemplary embodiment, as shown in fig. 1 and 3, the blade locator further comprises: and the pressure difference forming assembly is positioned below the throttling nipple 200, the lower end of the throttling nipple 200 is fixedly connected with the upper end of the pressure difference forming assembly, and the liquid supply channel 100 comprises an inner hole of the pressure difference forming assembly. Wherein, pressure differential formation assembly includes: a lower joint 900; and the sliding sleeve 1000 is fixedly sleeved in the lower joint 900, the liquid supply channel 100 further comprises an inner hole surrounded by the lower joint 900 and the sliding sleeve 1000, the aperture of the inner hole of the sliding sleeve 1000 is reduced, and the purpose of forming liquid pressure difference is realized.

Illustratively, as shown in fig. 1 and 3, a circulation hole 910 is provided on a sidewall of the lower joint 900, the sliding sleeve 1000 is axially movably fixed in the lower joint 900 by the first shearing member 1600, and the sidewall of the sliding sleeve 1000 blocks the circulation hole 910; when the first shearing member 1600 is sheared, the sliding sleeve 1000 moves downwards to release the circulation hole 910, so that the circulation hole 910 is communicated with the liquid supply channel 100.

In an exemplary embodiment, as shown in fig. 1-3, the blade locator further comprises: the tool post 1100 (as shown in fig. 9) is located inside the guide cylinder 300 and fixedly sleeved on the piston rod 400, the upper end of the cutter body 500 is hinged to the lower end of the tool post 1100, and the lower end of the cutter body 500 extends into the avoiding opening 310.

For example, as shown in fig. 1 to 3, the tool holder 1100 is fixedly sleeved on the piston rod 400 through the second shearing part 1700 in an axially movable manner, a second hydraulic chamber 1200 with a variable axial length is arranged between the tool holder 1100 and the piston rod 400, the piston rod 400 is provided with a second through hole 410, and the second hydraulic chamber 1200 is communicated with the liquid supply passage 100 through the second through hole 410; when the second shearing part 1700 is sheared, the liquid in the liquid supply channel 100 enters the second hydraulic cavity 1200 from the second through hole 410 and pushes the tool rest 1100 to move upwards.

Preferably, as shown in fig. 3, a driving inclined plane is provided between the cutter body 500 and the throttle nipple 200, and between the cutter body 500 and the lower mouth wall of the avoiding opening 310, so as to better ensure that the lower end of the cutter body 500 can extend out from the avoiding opening 310, and prevent the cutter body 500 from being stuck.

In an exemplary embodiment, as shown in fig. 1 and 2, the blade locator further comprises: the upper joint 1300 is positioned above the mandrel 600, the lower end of the upper joint 1300 is fixedly sleeved at the upper end of the mandrel 600, the upper end of the reset piece is pressed at the lower end of the upper joint 1300, and the liquid supply channel 100 further comprises an inner hole of the upper joint 1300.

Illustratively, as shown in fig. 1 and 2, the wing-type locator further includes: the upper end of the protection cylinder 1400 is fixedly connected with the lower end of the upper joint 1300, the lower end of the protection cylinder is sleeved on the upper end of the guide cylinder 300, and the resetting piece is hidden between the protection cylinder 1400 and the mandrel 600.

The use mode of the blade type positioner is as follows:

as shown in fig. 1 to 3, during normal well entry, the wing-type locator does not allow liquid to pass through, the cutter body 500 is in a retracted state, and the lower end of the cutter body 500 radially inwardly abuts against the lower port wall of the avoidance port 310; at this time, the first hydraulic chamber 700 has the smallest axial length and the coil spring 800 has the smallest compression amount.

As shown in fig. 4, when the wing-type positioner is in the process of going out of the well (the wing-type positioner moves upwards), liquid is pumped into the liquid supply channel 100, a certain pressure difference is generated at the sliding sleeve 1000 at the bottom, and the internal and external pressures of the first hydraulic cavity 700 and the liquid supply channel 100 are unbalanced; the liquid passes through the first through hole 610 to increase the volume of the first hydraulic chamber 700, the guide cylinder 300 moves upward, the coil spring 800 is compressed, the lower side opening wall of the avoiding opening 310 pushes the lower end of the cutter body 500 to swing outward, and the cutter body 500 is in an open state. When the wing type locator is located tubular column step surface 1500 in the pit and when contacting with tubular column step surface 1500 in the pit, cutter body 500 can receive decurrent power, and the power of upwards pulling wing type locator can increase this moment, can come out through the pulling force sensor response of ground connection, supplies operating personnel to judge that the wing type locator is located tubular column step surface 1500 in the pit this moment.

When the cutter wing type positioner is continuously pulled to move upwards, and the downward pressure of the downhole string step surface 1500 on the cutter body 500 is greater than the resultant force of the upward pulling force provided by the pressure difference of the first hydraulic cavity 700 and the return force of the spring, the cutter body 500 pushes the guide cylinder 300 to move downwards, and finally the cutter wing type positioner is retracted and avoided in the yielding port 310. If the liquid pressure is too high, the cutter body 500 cannot be retracted, the pump injection can be stopped, so that the blade type positioner pushes the guide cylinder 300 to move downwards to be reset under the reset force of the spiral spring 800, and the cutter body 500 is retracted.

As shown in fig. 5, in consideration of the downhole complexity, in the process of opening the cutter body 500 to the outside of the avoidance port 310, foreign materials in the well may be blocked between the wall of the avoidance port 310 and the cutter body 500, so that the cutter body 500 cannot be received in the avoidance port 310. In this case, the pumping pressure can be increased, so that the pressure difference generated by the liquid at the sliding sleeve 1000 is increased, the internal and external pressure difference between the second hydraulic chamber 1200 and the liquid supply channel 100 is increased, and when the pressure is sufficient, the second shearing member 1700 (shearing pin) is sheared, so that the volume of the second hydraulic chamber 1200 is increased, the tool rest 1100 moves upward along the piston rod 400, and pulls the tool body 500 from the avoiding opening 310 into the guide cylinder 300, so that the tool body 500 retracts into the avoiding opening 310 and is hidden inside the guide cylinder 300. Thereby allowing the wing-in-blade locator to normally pass through the tubular string step surface 1500.

In special cases (for some purposes such as cutting at the end of a tubing), as shown in fig. 6, when the upper wing positioner is positioned and the lower wing positioner requires no further fluid flow, fluid isolation is necessary, and a steel ball 1800 is inserted into the upper wing positioner, such that the steel ball 1800 sits on the inner sliding sleeve 1000, the first shearing member 1600 (shearing pin) is sheared by the increased pumping pressure, and the sliding sleeve 1000 moves downward and stops at the step of the lower joint 900, as shown in fig. 4, and the fluid can flow outward through the circulation hole 910, so that the fluid can not flow downward through the fluid supply channel 100 of the upper wing positioner.

This wing formula locator sets up twice safety measure simultaneously, ensures that wing formula locator meets the card after, removes the operation of location, and first measure is realized through lifting upwards, and the second measure is realized through increasing liquid pressure. In addition, in order to prevent the inner and outer circulation channels of the wing type positioner from being blocked in the operation process and influence the failure of the two safety measures, a circulation hole 910 which can be forcibly opened by throwing a steel ball 1800 for pressing is further arranged, and the inner and outer circulation is realized through the circulation hole 910.

In summary, in the blade-type positioner provided by the embodiment of the invention, the cutter body is located in the avoiding opening and is in a retracted state in the well entering process, the blade-type positioner can smoothly enter the well, and the cutter body is driven by liquid pressure to extend out of the avoiding opening for opening and positioning in the positioning process, so that the risk of the blade-type positioner in the well entering process is effectively reduced.

In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A wing-type locator, characterized in that, wing-type locator has the confession liquid passageway that link up from top to bottom, wing-type locator includes:

a throttling nipple;

the guide cylinder is positioned above the throttling nipple, the lower end of the guide cylinder is sleeved on the throttling nipple in an axially movable manner, and an avoidance port is formed in the side wall of the guide cylinder and positioned above the throttling nipple;

the piston rod is positioned in the guide cylinder and above the throttling nipple, and the lower end of the piston rod is fixedly connected with the upper end of the throttling nipple;

the cutter body is arranged corresponding to the avoidance port and hinged between the piston rod and the guide cylinder, and the guide cylinder can move up and down relative to the cutter body and the piston rod;

the mandrel is positioned above the piston rod, the lower end of the mandrel is fixedly connected with the upper end of the piston rod, the upper end of the guide cylinder is axially movably sleeved at the lower end of the mandrel, a first hydraulic cavity with variable axial length is formed between the mandrel and the guide cylinder, a first through hole is formed in the side wall of the mandrel, and the first hydraulic cavity is communicated with the liquid supply channel through the first through hole; and

the resetting piece is pressed between the upper end of the mandrel and the upper end of the guide cylinder, and when the axial length of the first hydraulic cavity is increased, the guide cylinder moves upwards to compress the resetting piece;

the liquid supply channel comprises an inner hole of the mandrel, an inner hole of the piston rod and an inner hole of the throttling nipple, the cutter body is located in the avoiding port and is in a retracted state in the well entering process, and the cutter body extends out of the avoiding port to be opened and positioned through liquid pressure driving in the positioning process.

2. The knife blade locator of claim 1, further comprising:

and the pressure difference forming assembly is positioned below the throttling nipple, the lower end of the throttling nipple is fixedly connected with the upper end of the pressure difference forming assembly, and the liquid supply channel comprises an inner hole of the pressure difference forming assembly.

3. The knife blade positioner of claim 2, wherein the pressure differential creating assembly comprises:

a lower joint; and

the sliding sleeve is fixedly sleeved in the lower joint, and the liquid supply channel further comprises an inner hole formed by the lower joint and the sliding sleeve in a surrounding mode.

4. The wing-type locator of claim 3, wherein the sidewall of the lower joint is provided with a circulation hole, the sliding sleeve is axially movably fixed in the lower joint through a first shearing piece, and the sidewall of the sliding sleeve blocks the circulation hole;

when the first shearing piece is sheared, the sliding sleeve moves downwards to release the circulating hole, so that the circulating hole is communicated with the liquid supply channel.

5. The knife wing positioner of any one of claims 1-4, further comprising:

the cutter rest is positioned on the inner side of the guide cylinder and fixedly sleeved on the piston rod, the upper end of the cutter body is hinged to the lower end of the cutter rest, and the lower end of the cutter body extends into the avoidance port.

6. The wing positioner of claim 5, wherein the tool post is secured to the piston rod by a second shear member in an axially movable manner, and a second hydraulic chamber having a variable axial length is disposed between the tool post and the piston rod, the piston rod having a second through hole, the second hydraulic chamber being in communication with the liquid supply passage through the second through hole;

when the second shearing piece is sheared, liquid in the liquid supply channel enters the second hydraulic cavity from the second through hole and pushes the tool rest to move upwards.

7. The wing-type locator of claim 5, wherein cooperating drive ramps are provided between the cutter body and the choke nipple and between the cutter body and the lower pocket wall of the avoidance pocket.

8. The knife wing positioner of any one of claims 1-4, further comprising:

the upper joint is positioned above the mandrel, the lower end of the upper joint is fixedly sleeved at the upper end of the mandrel, the upper end of the resetting piece is pressed at the lower end of the upper joint, and the liquid supply channel further comprises an inner hole of the upper joint.

9. The knife blade locator of claim 8, further comprising:

the upper end of the protection barrel is fixedly connected with the lower end of the upper joint, the lower end of the protection barrel is sleeved at the upper end of the guide barrel, and the resetting piece is hidden between the protection barrel and the mandrel.

10. The wing-type locator of any one of claims 1-4, wherein the reset element is a coil spring, and the cutter body and the evasion port are circumferentially spaced apart in multiple sets.