CN111075365B

CN111075365B - Tieback cylinder protection device and feeding and pulling tool thereof

Info

Publication number: CN111075365B
Application number: CN201811215228.7A
Authority: CN
Inventors: 李振; 李富平; 张冠林; 梁晓阳; 张长齐; 段风海; 李建业; 祁正玉
Original assignee: Shelfoil Petroleum Equipment & Services Co ltd; China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering
Current assignee: Shelfoil Petroleum Equipment & Services Co ltd; China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering
Priority date: 2018-10-18
Filing date: 2018-10-18
Publication date: 2021-06-25
Anticipated expiration: 2038-10-18
Also published as: CN111075365A

Abstract

The invention relates to a tieback cylinder protection device and a feeding and pulling tool thereof. The tieback cartridge protection device includes a cylindrical protection body that is at least partially insertable into the tieback cartridge to space the tieback cartridge from the drilling tool. Can avoid a tieback section of thick bamboo impaired in the drilling process through this tieback section of thick bamboo protection device.

Description

Tieback cylinder protection device and feeding and pulling tool thereof

Technical Field

The invention relates to the field of oil and natural gas exploration and development well fixing and completion, in particular to a tieback cylinder protection device. The invention also relates to a running and pulling tool for the tieback protection device.

Background

In the oil and gas well cementing and completion operation in the petroleum engineering industry, a pipe which is opened once on a completion well is often connected back to a wellhead in series so as to ensure that the subsequent completion operation can meet the design pressure requirement. However, in some cases where the downhole situation is complicated or in the case of a well difficult to construct, when the next drilling operation is performed after the pipe string is connected back, it is difficult to increase the drilling displacement and pressure due to a small well diameter, the drilling efficiency is low, and once a special situation occurs downhole, it is difficult to perform a remedial operation by inserting a subsequent pipe string. Therefore, it is currently common to perform well completion operations using a drill-before-tie-back operation.

During drilling, the drilling tool needs to extend into the tieback cylinder. However, it is difficult to ensure absolute centering of the drill, and thus it is difficult to avoid contact of the drill with the inner wall of the tieback barrel. This inevitably causes wear to the tieback cylinder. Especially when the well is deviated more at the position of the hanger (including the tieback cylinder), the interior of the tieback cylinder is easy to be worn seriously. Due to this wear, the tie-back cylinder may have certain difficulties in subsequent tie-back operations, which may have a significant negative impact on both the tie-back operation and the subsequent operations.

Therefore, there is a need for a device that avoids damage to the tieback barrel during drilling.

Disclosure of Invention

In view of the above problems, the present invention provides a tieback cylinder protection device, by which a tieback cylinder can be prevented from being damaged during drilling. In addition, the invention also provides a feeding and pulling tool for the tieback cylinder protection device.

According to one aspect of the present invention, a tieback cartridge protection device is presented comprising a cylindrical protection body insertable at least partially into a tieback cartridge to space the tieback cartridge from a drilling tool.

The protective body of the tieback cartridge protection device is inserted into the tieback cartridge before drilling begins. Thus, during drilling, the drilling tool is within the protective body, which spaces the drilling tool from the tieback barrel. In this case, even if the drill has a deviation, the tieback cylinder is not damaged. This ensures that the tieback cylinder can be smoothly tieback in subsequent tieback operations.

In one embodiment, a locking portion for engagement with a running-in and pulling-out tool is configured on the inside of the protective body.

In one embodiment, the locking portion is configured as a left-handed buttress thread.

In one embodiment, the tieback protection device further comprises a hanging mechanism sleeved outside the protection body, the hanging mechanism comprises: an elastic slip including a slip body configured to extend in an axial direction of the protective body and having a thickness gradually decreasing from an upper end to a lower end, an engagement tooth configured on an outer side of the slip body for engagement with an inner wall of an upper casing, and a cone sleeve including a cone sleeve body configured to extend in the axial direction, the outer side of the cone sleeve body configured to be inclined to gradually move away from the protective body from the upper end to the lower end, wherein the slip body is at least partially contactable with the outer side of the cone sleeve body, the slip body being permitted to move in a radially outward direction to engage the inner wall of the upper casing upon relative movement of the cone sleeve body and the slip body in the axial direction.

In one embodiment, the resilient slip further comprises a connecting portion extending from an upper end of the slip body in the axial direction, the connecting portion being connected to the protective body by a first shear pin.

In one embodiment, the drogue further comprises a locking portion extending from the lower end of the drogue body in the axial direction, the locking portion comprising an extension spaced from the protective body, and a radially inwardly extending locking projection provided at a lower end of the extension section, the sitting and hanging mechanism further comprising a locking fitting, the locking fitting is connected to the protective body by a second shear pin, the locking fitting being configured with a fitting extension extending upward along the axial direction, and a radially outwardly extending fitting projection provided at an upper end of the extension, wherein the locking protrusion can be fastened with the mating protrusion, when the locking protrusion is fastened with the mating protrusion, a space is left between the mating protrusion and the drogue body to allow the locking mating piece to move upward relative to the drogue.

According to another aspect of the invention, a running tool is provided which can be used for running and/or running out of the above-described tieback protection device, the running tool being configured to be insertable into the protection body and to be detachably engaged with the protection body.

In one embodiment, the running tool includes locking slips having locking teeth configured on an outer side of the locking slips, the locking teeth configured to mate with locking portions on an inner side of the protective body.

In one embodiment, the running tool includes a cylindrical tool body having at least two radially outwardly extending ridges configured thereon, the locking slips being disposed between the ridges to limit movement of the locking slips in a circumferential direction of the tool body.

In one embodiment, the running tool further comprises: the upper end mounting, the upper end mounting is constructed with fixed up end, fixed up end sets up the upper end department of locking slips, in order to restrict the axial displacement of locking slips, the upper end mounting is still constructed with the follow fixed up end department downwardly extending is in order to cover the surrounding part of the lateral surface of locking slips, in order to restrict the radial movement of locking slips, and the lower extreme mounting, the lower extreme mounting sets up the outside of tool body and for the outside protrusion of tool body, the lower extreme mounting sets up the lower extreme department of locking slips, in order to restrict the axial displacement of locking slips.

Compared with the prior art, the invention has the advantages that: the protective body of the tieback cartridge protection device is inserted into the tieback cartridge before drilling begins. Thus, during drilling, the drilling tool is within the protective body, which spaces the drilling tool from the tieback barrel. In this case, even if the drill has a deviation, the tieback cylinder is not damaged. This ensures that the tieback cylinder can be smoothly tieback in subsequent tieback operations.

Drawings

The invention is described in more detail below with reference to the accompanying drawings. Wherein:

FIG. 1 shows a schematic block diagram of a tieback cartridge protection apparatus according to one embodiment of the present invention;

FIG. 2 shows an enlarged detail view of a portion of the tieback cartridge protection of FIG. 1;

FIG. 3 shows a schematic of the construction of a running and extracting tool according to one embodiment of the present invention;

FIG. 4 shows a tieback protection device, a run-in pull-out tool, and a run-in drill according to one embodiment of the present invention; and is

Fig. 5 shows a tieback cartridge protection device and tieback cartridge according to one embodiment of the present invention.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

Fig. 1 schematically illustrates a tieback cartridge protection device 100 according to one embodiment of the present invention. The tieback cartridge protector 100 includes a generally cylindrical protective body 110. The protective body 110 is configured to be inserted into a tieback cartridge 400 (see fig. 5). Thus, during drilling, the protective body 110 can space the tieback cartridge 400 from a drilling tool (not shown) performing the drilling operation, thereby preventing the drilling tool from wearing the tieback cartridge 400.

As shown in fig. 1, the tieback cartridge protection device 100 also includes a sitting and hanging mechanism. The setting mechanism includes resilient slips 130 for engaging an upper casing (not shown) to fix the position of the tieback cylinder guard 100. For example, the resilient slips 130 may include a slip body 131 with engagement teeth configured on the outside of the slip body 131 for engaging the inner wall of an upper casing. The slip body 131 is configured to extend in an axial direction of the protective body 110 and has a thickness gradually decreasing from an upper end to a lower end in the axial direction. The resilient slips 130 also include connecting portions 132 that extend upwardly in an axial direction from the upper end of the slip body 131. The connecting portion 132 is configured to flex in a radial direction to allow the slip body 131 to move radially outward to allow the engaging teeth of the slip body 131 to engage the inner wall of the upper casing. The connection portion 132 is configured to have certain elasticity. In addition, an auxiliary connection portion 133 extending in the axial direction may also be provided. The auxiliary connecting part 133 has one end connected to the protective body 110 by a first shear pin 141 and the other end connected to the upper end of the connecting part 132 by a screw. The auxiliary connection part 133 is made of a rigid material.

It should be understood that the auxiliary connection 133 may not be provided, but the connection 132 is directly connected to the protective body 110 by the first shear pin.

Preferably, the stopper 120 is provided upstream of the auxiliary connecting portion 133. The stopper 120 is fixedly secured to the outside of the protective body 110 (e.g., by bolts or the like), and is provided at the upper end of the auxiliary connecting portion 133. This prevents the elastic slip 130 (the auxiliary connecting portion 133) from moving upward relative to the protective body 110 and accidentally shearing the first shear pin 141.

The setting mechanism also includes a drogue 150 that cooperates with the resilient slips 130. As shown in fig. 2, the drogue includes a drogue body 151. The cone body 151 is configured with an outer side surface gradually distant from the protective body 110 in the axial direction. A slip body is at least partially disposed on the outer side. When the taper sleeve main body moves along the axial direction relative to the slip main body, the slip main body can move along the outer side surface of the taper sleeve main body, and therefore the radial movement action of the slip main body is realized. For example, the drogue body 151 may be configured in a shape having a gradually increasing thickness along the axial direction as shown in fig. 1 and 2.

The drogue 150 further comprises a locking portion comprising a locking extension 152 extending in an axial direction from a lower end of the drogue body 151, a gap being formed between the locking extension 152 and the protection body 110. At the lower end of the locking extension 152, a radially inwardly extending locking projection 153 is configured.

Accordingly, the sit-hang mechanism further comprises a locking fitting 160. As shown in fig. 2, the locking engagement 160 is connected to the protective body 110 by a second shear pin 142. The lock engagement member 160 extends upwardly from the location where the second shear pin 142 is located to form an engagement extension 162. A radially outwardly extending mating projection 163 is configured at the upper end of the mating extension 162. In the initial state, the fitting projection 163 is snapped with the locking projection 153, that is, the fitting projection 163 is between the locking projection 153 and the taper sleeve body 151, and a lower end surface of the fitting projection 163 abuts against an upper end surface of the locking projection 153. At this time, a certain space is left between the fitting projection 163 and the taper sleeve main body 151 to allow the second shear pin to be smoothly sheared.

Preferably, an engagement end face 164 is configured at the lower end of the locking fitting 160 for engagement with the tieback cartridge 400. When the engagement end surface 164 abuts the tieback cylinder 400, the operator can know that the tieback cylinder guard 100 is lowered to the desired position. At this time, the sitting and hanging operation is started. In a preferred embodiment, the engagement end face 164 is configured to be angled with its upper end away from the protective body 110 relative to its lower end.

As shown in fig. 2, a receiving groove 112 may be further formed on an outer surface of the protective body 110. The receiving groove is positioned to correspond to the thicker upper end of the slip body 131 when not extending radially outward. Thus, when the slip body 131 is not extended radially outward, the inner portion of its relatively thick upper end can be seated in the receiving groove 112, thereby allowing the slip body 131 to be effectively retracted without the outermost side of the slip body 131 exceeding the outermost side of the cone. Preferably, at this time, the outer side surfaces of the slip bodies 131 are configured to be substantially parallel to the axial direction of the protection body 110.

In addition, as shown in fig. 2, a step surface 111 facing generally upward may be further formed on the outer surface of the protective body 110. The step surface is located a distance below the first shear pin 141. After the first shearing pin 141 is sheared, the elastic slip 130 can move downward with respect to the protective body 110 until the auxiliary connection portion 133 abuts against the stepped surface 111.

Further, it should be understood that the tieback cartridge protector 100 may also include an extension for extending the overall length of the tieback cartridge protector 100. For example, in the embodiment shown in fig. 1, an extension 181 and an extension 182 are connected in sequence below the protection body 110 for adapting to the length of an object to be protected. The length of the

extension

181, 182 may be standardized. Thus, when a longer tie-back cartridge protection device 100 is desired, a combination of suitable extension segments can be selected to meet the need. It will be appreciated that the length and number of extensions may vary as desired.

For example, a seal 170 may be provided on the outer surface of the extension 181 for mating with a tieback cartridge.

Below the lowermost extension 182, a guide head 190 may be provided.

Fig. 3 shows a running-in and pull-out tool 200 for the tieback cylinder protection 100 described above. As shown in fig. 3, the running tool 200 includes a substantially cylindrical tool body 210. At least one locking slip 220 is disposed on the outside of the tool body 210. The locking slips 220 may include a locking slip body 221, on the outer side of which locking teeth, preferably locking teeth of a dog clutch, are configured that can mate with a locking portion (e.g., left-handed dog clutch threads) inside the protection body 110 of the tieback cylinder protection 100. The left-handed thread of the left-handed thread horse can be reversely screwed up to fix the thread, can be pressed in and connected along the thread direction, and can bear certain load when being stretched reversely.

In one embodiment, the locking portion and the locking teeth may be made of steel. In a preferred embodiment, the locking portion and the locking teeth may be made of cemented carbide. The locking part and the locking teeth made of the material have good abrasion resistance, and the effectiveness of the locking part and the locking teeth can be ensured.

The locking slips 220 may also include an extension 222. The running tool also includes an upper end fixture 230. The upper end fixture 230 may, for example, be integral with the upper nipple of the run-in and run-out tool, at least partially surrounding the upper end of the tool body 210. The upper end fixture 230 includes a fixed upper end surface 231, and the fixed upper end surface 231 faces substantially downward and can be abutted against the upper end of the extension 222 of the locking slip 220. The locking slips 220 are restrained from moving axially upward by the fixed upper end surface 231. The upper end fixture 230 also includes an enclosure 232 extending downwardly from the fixed upper end face 231 to cover at least a portion of the outer side of the locking slips 220. The locking slips 220 are restricted from moving radially outward by the enclosure 232.

In addition, the running tool may also include a lower end fixture 240. The lower end fixture is secured to the tool body 210 below the locking slips 220, such as by bolts, and projects radially outward relative to the tool body 210. For example, the lower end fixture 240 may be configured as a ring having a substantially trapezoidal cross-section that fits over the tool body 210. The locking slips 220 are restrained from moving axially downward by the lower end fixture 240.

With the above arrangement, the locking slips 220 may be substantially fixed outside the tool body 210. It should be understood that there may be some play between the locking slips 220 and the upper and lower end fixtures.

In addition, as also shown in fig. 3, a radially outwardly extending ridge 211 is configured on the tool body 210, the length of the ridge 211 extending substantially in the axial direction. The ridges 211 are disposed at circumferential sides of the locking slips 220 to limit movement of the locking slips 220 in a circumferential direction.

Preferably, a plurality of locking slips 220 are arranged in a circumferential direction outside of the tool body 210. A corresponding ridge 211 is provided between each two adjacent locking slips 220. It can also be seen that a respective ridge 211 is provided on both circumferential sides of each locking slip 220. The plurality of locking slips 220 and corresponding ridges 211 occupy substantially the entire circumference of the exterior of the tool body 210.

An extension 250 is also attached at the lower end of the tool body 210 as needed for the running tool 200 to have a desired length. A guide head 260 is provided at the lower end of the extension 250.

An example of the use of the tieback cartridge guard 100 and running tool 200 will now be described in detail with reference to fig. 1 to 5.

Before drilling of a completion trip is required, the tieback protection device 100 is run into the well and inserted into the tieback 400. To this end, first, the running out tool 200 is inserted into the protective body 110 of the tieback cylinder protection 100 and the securing between the running out tool 200 and the tieback cylinder protection 100 is achieved by the engagement of the locking teeth of the locking slips 220 of the running out tool 200 with the locking portions (e.g., threads) inside the protective body 110 of the tieback cylinder protection 100.

The running tool 200 is then run downhole with the tieback protection device 100 by running the running tool 300 attached to the upper end of the running tool 200. FIG. 4 shows a block diagram of the connection of the running drill 300, running tool 200 and tieback protection device. When the tieback cartridge protection device 100 is lowered into position with the tieback cartridge, a portion of the protection body 110 (and the extension and guide head) of the tieback cartridge protection device 100 is inserted into the tieback cartridge 400 (see fig. 5), while another portion of the protection body 110 and the seating mechanism are located above the tieback cartridge 400. At this time, the second shear pin 142 is sheared by a pushing down action (e.g., 5-10t of pushing down). Thus, upon further depression of the protective body 110, the drogue 140 no longer moves downward with the protective body 110, but is held stationary against the upper end of the tieback barrel 400. At this point, for the tieback protection device 100 itself, the drogue 140 appears to move upwardly relative to the protection body 110 and the resilient slips 130 and thereby urge the slip bodies 131 of the resilient slips 130 to extend radially outwardly until the engagement teeth on their outer sides engage the inner wall of the upper casing. Through the above operation, the tie-back cylinder protection device 100 can be seated and hung.

Thereafter, after lifting up 1-2t, the running tool 300 is rotated (e.g., forward rotated) to separate the locking portion inside the protective body 110 from the locking teeth of the locking slips 220. The running drill 300 and running tool 200 may then be lifted for retrieval, leaving the tieback protection device 100 in place.

At this point, a completion trip drilling may be performed. Since the protective body 110 separates the drilling tool from the tieback cartridge, the tieback cartridge is effectively protected from wear by the drilling tool.

After drilling is complete, the run-in extraction tool 200 is again run in. After the running tool 200 is run in to the desired location, it is pressed down 5t to connect the locking teeth of the locking slips 220 with the locking portion (threads) inside the guard body 110. Subsequently, 10-12t are lifted up to shear the first shear pin 141. Continuing to lift, the resilient slips 130 may be moved downward relative to the protective body 110 and thereby cause the auxiliary connection 133 to engage the step surface 111. Then, the elastic slips 130 are driven to move upwards together by continuing to lift up, and therefore the elastic slips 130 move away from the taper sleeve 140, so that the slip main body 131 retracts inwards in a radial direction, and the hanging is released. Thereafter, the tieback cartridge protector 100 may be recovered by continuing to lift it upward.

Thereafter, tail pipe tieback operation may be performed.

The tieback protection device 100, the feeding and pulling tool 200 and the operation can protect the tieback without influencing the subsequent operation.

It should be understood that in this document, the words "upper", "lower", and the like are relative terms. As defined herein, unless otherwise specified or clearly contradicted by context, "up" is a direction relatively close to the wellhead and "down" is a direction relatively close to the bottom of the well.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A tieback cartridge protection device comprising:

a cylindrical protective body insertable at least partially into the tieback cartridge to space the tieback cartridge from the drilling tool; and

the cover is established protect the sitting in the main part outside and is hung the mechanism, sit and hang the mechanism and include:

an elastic slip including a slip body configured to extend in an axial direction of the protective body and having a thickness gradually decreasing from an upper end to a lower end, an engaging tooth configured on an outer side of the slip body to engage with an inner wall of an upper casing, and

a cone sleeve including a cone sleeve body configured to extend along the axial direction, an outer side surface of the cone sleeve body being configured to be inclined to gradually get away from the protective body from an upper end to a lower end,

wherein the slip body is at least partially contactable with an outer side of the drogue body, the slip body being permitted to move in a radially outward direction to engage an inner wall of the upper casing upon relative movement of the drogue body and the slip body in the axial direction.

2. The tieback cylinder protector of claim 1, wherein a locking portion is configured on the inside of the protective body for engagement with a run-in and run-out tool.

3. The tieback barrel protection device of claim 2, wherein the locking portion is configured as a left-handed buttress thread.

4. The tieback cylinder protection device of any one of claims 1 to 3, wherein the resilient slips further comprise a connecting portion extending in the axial direction from an upper end of the slip body, the connecting portion being connected to the protection body by a first shear pin.

5. The tieback cartridge protection device of any one of claims 1 to 3, wherein the taper sleeve further comprises a locking portion extending from a lower end of the taper sleeve body in the axial direction, the locking portion comprising a locking extension spaced from the protection body, and a radially inwardly extending locking projection provided at a lower end of the extension,

the sit-hang mechanism further comprises a lock fitting connected with the protection body by a second shear pin, the lock fitting being configured with a fitting extension section extending upward in the axial direction, and a fitting projection extending radially outward provided at an upper end of the extension section,

the locking protrusion can be buckled with the matching protrusion, and when the locking protrusion is buckled with the matching protrusion, a space is reserved between the matching protrusion and the taper sleeve main body to allow the locking matching piece to move upwards relative to the taper sleeve.

6. A running and extracting tool usable for running and/or extracting a tieback cartridge protection device according to any one of claims 1-5, the running and extracting tool configured to be insertable into and removably engageable with the protection body.

7. A running tool according to claim 6, wherein the running tool comprises locking slips, on the outer side of which locking teeth are configured, which are configured to be able to cooperate with locking parts inside the protective body.

8. The running tool of claim 7, wherein the running tool includes a cylindrical tool body on which at least two radially outwardly extending ridges are configured, the locking slips being disposed between the ridges to limit movement of the locking slips in a circumferential direction of the tool body.

9. The running tool of claim 8, further comprising:

an upper end fixing member, the upper end fixing member is constructed with fixed up end, fixed up end sets up the upper end department of locking slips is in order to restrict the axial displacement of locking slips, the upper end fixing member is still constructed with the follow fixed up end department downwardly extending is in order to cover the surrounding part of the lateral surface of locking slips, in order to restrict the radial movement of locking slips, and

the lower end fixing piece is arranged on the outer side of the tool main body and protrudes relative to the outer side of the tool main body, and the lower end fixing piece is arranged at the lower end of the locking slip so as to limit the axial movement of the locking slip.