CN210714672U

CN210714672U - Continuous pipe operation well depth locator

Info

Publication number: CN210714672U
Application number: CN201920885894.5U
Authority: CN
Inventors: 冯来; 卢静; 杨斯媛; 耿莉
Original assignee: China National Petroleum Corp; CNPC Engineering Technology R&D Co Ltd
Current assignee: China National Petroleum Corp; CNPC Engineering Technology R&D Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-06-09
Anticipated expiration: 2029-06-13

Abstract

The utility model provides a coiled tubing operation well depth locator, it includes: the shell is tubular; the locating pieces are arranged on the peripheral wall of the shell and are arranged at intervals along the circumferential direction of the shell, an elastic piece is arranged between each locating piece and the outer wall of the shell, the telescopic direction of the elastic piece is the radial direction of the shell, the locating pieces are provided with locating protrusions protruding out of the outer side wall of the shell, when the locating pieces move up to a coupling on an underground casing string along with the coiled tubing, the locating protrusions can be embedded into a gap of the coupling under the pushing of the elastic piece, and the locating protrusions can be moved out of the gap of the coupling through compressing the elastic piece when the coiled tubing continues to move up. The utility model discloses a locator is mechanical type well depth positioner in pit, can realize the accurate measurement to the continuous tube underrun degree of depth.

Description

Continuous pipe operation well depth locator

Technical Field

The utility model belongs to the technical field of the coiled tubing operation technique and specifically relates to a coiled tubing operation well depth locator.

Background

The coiled tubing technology is born in the 60 s of the 20 th century as an unconventional technology, and in the 90 s of the 20 th century, the coiled tubing operation device is known as universal operation equipment, is widely applied to operations such as well repairing, well drilling, well completion, well logging and the like of oil and gas fields, and plays an increasingly important role in the exploration and development of the oil and gas fields. The coiled tubing technology has the biggest advantages of safe well control, simple and flexible operation, no connection of single pipe, and capability of carrying out bit replacement and tripping operation without killing a well.

The coiled tubing is wound on the roller before being placed into the well, and the coiled tubing is straightened by the injection head and then placed into the well during operation, but the coiled tubing is not a straight tubing string due to the strong elasticity of the coiled tubing, and has great spiral bending, so that the placement depth read by the ground counter has a larger difference with the actual placement depth of the coiled tubing.

The depth is measured to continuous pipe ground equipment generally adopts mechanical gyro wheel meter depth ware, and the measurement error is great, to some constructions that need accurate positioning, such as many thin-layer fracturing etc. the error of ground meter depth device is too big, probably can lead to the change of construction horizon.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coiled tubing operation well depth locator, it is mechanical type well depth positioner in the pit, can realize the accurate measurement to the coiled tubing underrun degree of depth.

In order to achieve the above object, the utility model provides a coiled tubing operation well depth locator can go into in the pit along with the coiled tubing, and it includes: a housing, the housing being tubular; a plurality of setting elements, it is a plurality of the setting element is installed on the periphery wall of casing, and follow the circumference interval arrangement of casing, every the setting element with be equipped with the elastic component between the outer wall of casing, the flexible direction of elastic component does the radial direction of casing, the setting element have protrusion in the location of the lateral wall of casing is protruding, works as the setting element follows the coiled tubing goes upward when going to the coupling department on the underground casing string, the location arch can be in embedding under the ejection of elasticity the elastic component in the space of coupling, and can be in through the compression when the coiled tubing continues to go upward the elastic component is followed shift out in the space of coupling.

The continuous pipe operation well depth positioner is characterized in that a plurality of mounting grooves are formed in the outer side wall of the shell, the mounting grooves are arranged along the circumferential direction of the shell at intervals, the positioning pieces are inserted into the mounting grooves respectively, the elastic piece is located in the mounting grooves, one end of the elastic piece abuts against the groove bottoms of the mounting grooves, and the other end of the elastic piece abuts against the positioning pieces.

The continuous pipe operation well depth positioner is characterized in that the positioning piece is in clearance fit with the side wall of the mounting groove.

The continuous pipe operation well depth positioner comprises a casing, a positioning piece and a plurality of limiting cylinders, wherein the casing is provided with a groove bottom, the positioning piece is sleeved on the casing, the two limiting cylinders are respectively positioned at two ends of the mounting groove, two ends of the positioning piece are respectively positioned at the inner sides of the two limiting cylinders, and the positioning piece can move between the limiting cylinders and the groove bottom of the mounting groove.

The continuous pipe operation well depth locator as described above, wherein each of the limiting cylinders is formed by two semicircular cylinders which are buckled together.

The continuous pipe operation well depth positioner is characterized in that the limiting cylinder and the shell are connected through screws.

The continuous pipe operation well depth positioner is characterized in that each positioning piece is provided with a plate-shaped body, the body is embedded into the mounting groove, the other end of the elastic piece props against the inner wall of the body, and the positioning bulge is arranged on the outer wall of the body.

The continuous pipe operation well depth positioner is characterized in that the cross section of the positioning protrusion is in an isosceles trapezoid shape, and the width of the cross section of the positioning protrusion decreases gradually along the radial direction of the shell.

The continuous pipe operation well depth positioner is characterized in that the positioning bulges of the positioning pieces are aligned along the circumferential direction of the shell and are annularly arranged.

The continuous pipe operation well depth positioner is characterized in that a plurality of elastic pieces are arranged between each positioning piece and the outer wall of the shell, and the elastic pieces are arranged at intervals along the axial direction of the shell.

The utility model discloses a characteristics and advantage of coiled tubing operation well depth locator are:

1. the utility model discloses a coiled tubing operation well depth locator can be along with the coiled tubing together go into to the shaft bottom, in the in-process of carrying the coiled tubing string, when the locator is through casing string coupling in the pit, because there is the space in the positive centre of coupling inside, the location arch can be by the elastic component spring-in to the space of coupling, continue to carry the coiled tubing string this moment, the location arch can compress the elastic component, arouse the coiled tubing string overhang to increase, after the location arch withdraws from the space of coupling, the coiled tubing string overhang reduces to normal thereupon, the locator is every through a coupling, the change that "reduces after increasing" will appear once in the coiled tubing string overhang, according to the change number of times of coiled tubing string overhang, combine the degree of depth of every coupling on the known casing string in the pit, alright go out the running-in depth of coiled tubing string, thereby realize the accurate measurement to the running-in degree of depth of;

2. the utility model discloses a coiled tubing operation well depth locator is mechanical type well depth locator in the pit, simple structure, and is durable.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

figure 1 is a cross-sectional view of one embodiment of the coiled tubing well depth locator of the present invention.

Main element number description:

1. a housing; 11. mounting grooves; 12. an internal thread; 13. an external thread;

2. a positioning member; 21. positioning the projection; 22. a body;

3. an elastic member;

4. a limiting cylinder;

5. and (4) screws.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in figure 1, the utility model provides a well depth positioner for coiled tubing operation, which can be put into the well along with the coiled tubing, the locator comprises a shell 1 and a plurality of locating pieces 2, wherein the shell 1 is tubular, the shell 1 can be connected and matched with a downhole tool of a coiled tubing, a plurality of positioning pieces 2 are arranged on the peripheral wall of the shell 1 and are arranged at intervals along the circumferential direction of the shell 1 along with the continuous pipe going into the well, an elastic piece 3 is arranged between each positioning piece 2 and the outer wall of the shell 1, for example, the elastic member 3 is a spring, the expansion direction of the elastic member 3 is the radial direction of the housing 1, the positioning member 2 has a positioning protrusion 21 protruding from the outer side wall of the housing 1, when the locator 2 is run up the coiled tubing to a coupling on a casing string downhole, the locator projections 21 can be inserted into the voids of the coupling under the urging of the elastomeric members 3 and can be removed from the voids of the coupling by compressing the elastomeric members 3 as the coiled tubing continues to run up.

When in use, the continuous pipe operation well depth locator is arranged in the middle of the underground tool string and is put into the well bottom along with the continuous pipe, then the continuous pipe string is lifted, when the locator passes through the coupling of the underground casing string, because the right middle of the inner part of the coupling is provided with a gap, the positioning bulge 21 can be bounced into the gap of the coupling by the elastic element 3, at the moment, the coiled tubing string is continuously lifted, the positioning bulge 21 can compress the elastic element 3 to cause the suspended weight of the coiled tubing string to be increased, after the positioning bulge 21 is withdrawn from the gap of the coupling, the hanging weight of the continuous pipe column is reduced to be normal, the hanging weight of the continuous pipe column can be changed once through a coupling after the locator passes through the coupling, the hanging weight of the continuous pipe column is increased and then reduced, according to the change times of the hanging weight of the continuous pipe column, the running depth of the continuous pipe column can be measured by combining the known depth of each coupling on the underground casing string, and therefore the running depth of the continuous pipe column can be accurately measured.

As shown in fig. 1, further, the cross section of the positioning protrusion 21 is an isosceles trapezoid, and the width of the cross section of the positioning protrusion 21 decreases along the radial direction of the housing 1, that is, two side surfaces of the positioning protrusion 21 are inclined surfaces, so as to move out of the gap of the coupling. The magnitude of the change in the suspended load of the coiled tubing string can be adjusted by changing the parameters such as the outer diameter (height) of the positioning boss 21, the side slope of the positioning boss 21, and the diameter of the elastic member 3.

Further, the positioning protrusions 21 of the plurality of positioning members 2 are aligned in the circumferential direction of the housing 1 and arranged in a ring shape so as to be simultaneously caught in the gaps of the coupling.

As shown in fig. 1, in an embodiment, a plurality of mounting grooves 11 are formed on an outer side wall of the housing 1, for example, the mounting grooves 11 are rectangular, the mounting grooves 11 are arranged at intervals along a circumferential direction of the housing 1, the positioning members 2 are respectively inserted into the mounting grooves 11, the elastic member 3 is located in the mounting grooves 11, one end of the elastic member 3 abuts against a groove bottom of the mounting groove 11, and the other end of the elastic member 3 abuts against the positioning member 2. Specifically, the positioning element 2 is positioned in the installation groove 11, and the positioning protrusion 21 of the positioning element 2 extends out of the installation groove 11 under the pushing of the elastic element 3 so as to be embedded in the gap of the coupling. To the mounting means of setting element 2, the utility model discloses not so limit, setting element 2 also can install on the periphery wall of casing 1 through other modes, for example connect the connecting rod on the periphery wall of casing 1, the radial setting of casing 1 is followed to the connecting rod, and setting element 2 can be followed the connecting rod and slided ground and be connected with the connecting rod.

For example, the number of the mounting grooves 11 is 6, and the number of the positioning members 2 is 6.

Further, the lateral wall clearance fit of setting element 2 and mounting groove 11 can make setting element 2 remove in mounting groove 11, can make mounting groove 11 play the effect of location and rightting to setting element 2 again.

As shown in fig. 1, further, the coiled tubing operation well depth positioner further comprises two limiting cylinders 4 sleeved outside the casing 1, for example, the limiting cylinders 4 are connected with the casing 1 through screws 5, the limiting cylinders 4 are cylindrical, the two limiting cylinders 4 are respectively located at two ends of the mounting groove 11, two ends of the positioning part 2 are respectively located at the inner sides of the two limiting cylinders 4, and the positioning part 2 can reciprocate between the inner wall of the limiting cylinder 4 and the bottom of the mounting groove 11. Through setting up spacing section of thick bamboo 4, can be spacing to setting element 2, avoid setting element 2 to play from mounting groove 11. However, the utility model discloses do not regard this as the limit, also can set up other locating parts, for example set up the gag lever post, the gag lever post is connected with casing 1 along casing 1's radial setting, the one end of gag lever post, and the gag lever post passes setting element 2, and the other end of gag lever post has annular convex part, makes setting element 2 can only remove between casing 1 and the annular convex part of gag lever post.

Further, each of the restraining cylinders 4 is formed by two semicircular cylinders which are snapped together to facilitate mounting of the restraining cylinders 4 on the housing 1.

As shown in fig. 1, each positioning member 2 has a plate-shaped body 22, the body 22 is inserted into the mounting groove 11, the body 22 is matched with the mounting groove 11, the body 22 is in clearance fit with the side wall of the mounting groove 11, the other end of the elastic member 3 abuts against the inner wall of the body 22, and the positioning protrusion 21 is disposed on the outer wall of the body 22.

As shown in fig. 1, a plurality of elastic members 3 are further disposed between each positioning member 2 and the outer wall of the housing 1, and the plurality of elastic members 3 are arranged at intervals in the axial direction of the housing 1.

Further, as shown in fig. 1, both ends of the housing 1 are provided with threaded joints to facilitate connection of other downhole tools for coiled tubing. For example, the upper end of the housing 1 is threaded with internal threads 12, and the lower end of the housing 1 is threaded with external threads 13.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned integral application, and various technical features described in the present invention can be selected to be used alone or in combination according to actual needs, so that the present invention naturally covers other combinations and specific applications related to the invention of the present invention.

Claims

1. A coiled tubing operation well depth locator, capable of being run downhole with coiled tubing, the coiled tubing operation well depth locator comprising:

a housing, the housing being tubular;

a plurality of setting elements, it is a plurality of the setting element is installed on the periphery wall of casing, and follow the circumference interval arrangement of casing, every the setting element with be equipped with the elastic component between the outer wall of casing, the flexible direction of elastic component does the radial direction of casing, the setting element have protrusion in the location of the lateral wall of casing is protruding, works as the setting element follows the coiled tubing goes upward when going to the coupling department on the underground casing string, the location arch can be in embedding under the ejection of elasticity the elastic component in the space of coupling, and can be in through the compression when the coiled tubing continues to go upward the elastic component is followed shift out in the space of coupling.

2. The continuous pipe operation well depth locator of claim 1, wherein a plurality of mounting grooves are formed on an outer side wall of the housing, the mounting grooves are arranged at intervals along a circumferential direction of the housing, a plurality of positioning members are respectively inserted into the mounting grooves, the elastic member is located in the mounting grooves, one end of the elastic member abuts against a groove bottom of the mounting groove, and the other end of the elastic member abuts against the positioning member.

3. The coiled tubing operation well depth locator of claim 2, wherein the locator is in clearance fit with a sidewall of the mounting groove.

4. The coiled tubing operation well depth locator of claim 2, further comprising two limiting cylinders sleeved outside the housing, wherein the two limiting cylinders are respectively located at two ends of the mounting groove, two ends of the positioning element are respectively located inside the two limiting cylinders, and the positioning element can move between the limiting cylinders and the bottom of the mounting groove.

5. The coiled tubing well depth locator of claim 4, wherein each of said retention cylinders is formed by two semicircular cylinders that snap together.

6. The coiled tubing operation well depth locator of claim 4, wherein the stop cylinder and the housing are connected by a screw.

7. The continuous pipe operation well depth locator of claim 2, wherein each locating member has a plate-shaped body, the body is embedded in the mounting groove, the other end of the elastic member abuts against the inner wall of the body, and the locating protrusion is arranged on the outer wall of the body.

8. The coiled tubing operation well depth locator of any one of claims 1 to 7, wherein the cross section of the locating protrusion is isosceles trapezoid, and the cross section width of the locating protrusion decreases along the radial direction of the shell.

9. The coiled tubing operation well depth locator of any one of claims 1 to 7, wherein the locating projections of the plurality of locating members are aligned in a circumferential direction of the housing and are arranged in a ring shape.

10. The coiled tubing operation well depth locator of any one of claims 1 to 7, wherein a plurality of elastic members are provided between each locating member and the outer wall of the housing, the plurality of elastic members being spaced apart in the axial direction of the housing.