CN212272123U - Cable type drifting tubular column for oil pipe - Google Patents

Abstract

The utility model relates to a cable formula drifting tubular column for oil pipe, include from last to the cable, horse tap, rotatory tension nipple joint and the drift size gauge that connect gradually down, the drift size gauge includes well core rod and the subassembly of scraping that establishes at well core rod's lateral wall, scrapes the subassembly and includes a plurality of scraping the piece that sets up along well core rod's circumference interval. The utility model discloses can realize the drifting in the oil pipe fast, know the operating mode in the oil pipe fast, can also monitor the stress state of tubular column when the card is met to the tubular column simultaneously, and simple structure, with low costs.

Description

Cable type drifting tubular column for oil pipe

Technical Field

The utility model relates to a well workover technical field especially relates to a cable formula drifting tubular column for oil pipe in the development of oil gas field.

Background

In the current oil field development, the drifting is one of the modes of checking the well condition integrity, for the workover measure in the casing, the mode of connecting an oil pipe with a drifting gauge can be adopted in advance for drifting, and for the workover measure in the oil pipe, the mode of connecting a sucker rod with the drifting gauge is mainly adopted for drifting due to the small inner diameter of the workover measure.

For the well repair of the oil pipe, most of cutting tools for well repair are very expensive (about two to three million), and after the oil pipe is put in, the cutting tools can only be salvaged through the salvage tools once the cutting tools are blocked, so that the cutting tools are greatly damaged, and great economic loss is caused. Therefore, before the cutting tool is put into the oil pipe, the working condition in the oil pipe is generally required to be quickly checked by utilizing a drift size gauge, the cutting tool is put into the oil pipe in a targeted manner after the working condition in the oil pipe is detected, and the use safety of the cutting tool is ensured. However, the conventional drifting gauge tool in the oil pipe mainly adopts a sucker rod to connect the drifting gauge tool to be tripped in, the sucker rods need to be tripped in one by one, the tripping speed is slow, and the working efficiency is seriously influenced.

Therefore, the inventor provides the cable type drifting tubular column for the oil pipe by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable formula drifting tubular column for oil pipe can realize the drifting in the oil pipe fast, knows the operating mode in the oil pipe fast, can also monitor the stress state of tubular column when the card is met to the tubular column simultaneously, and simple structure, with low costs.

The utility model aims at realizing the cable type drifting tubular column for the oil pipe, which comprises a cable, a cocket head, a rotary tension short section and a drifting gauge which are connected in sequence from top to bottom; the drift size gauge comprises a central rod and a scraping assembly arranged on the side wall of the central rod, wherein the scraping assembly comprises a plurality of scraping blocks arranged at intervals along the circumferential direction of the central rod.

In a preferred embodiment of the present invention, each scraping block is spirally disposed along the outer wall of the central rod.

In a preferred embodiment of the present invention, the scraping member is provided with two or more sets at axial intervals along the sidewall of the central rod.

In a preferred embodiment of the present invention, each of the scraping assemblies includes three scraping blocks.

In a preferred embodiment of the present invention, a weight bar is further connected between the rotational tension nipple and the center rod.

In a preferred embodiment of the present invention, the upper portion of the weight bar is a solid structure, a tubular body with an opening at the lower end is formed at the lower portion of the weight bar, and a first overflowing hole is formed in the upper pipe wall of the tubular body; the center rod is a cylindrical structure with two open ends, and the inner cavity of the center rod is communicated with the inner cavity of the tubular body.

In a preferred embodiment of the present invention, the lower end of the center rod is connected to a guide sleeve, and the lower end of the guide sleeve is provided with a second overflowing hole communicated with the inner cavity of the center rod.

In a preferred embodiment of the present invention, the outer wall of the lower end of the guiding sleeve is a tapered surface tapering downward.

The utility model discloses an in a preferred embodiment, the lower extreme outer wall of weight bar and well core rod's upper end inner wall threaded connection, well core rod's lower extreme outer wall and the upper end inner wall threaded connection of uide bushing.

In a preferred embodiment of the present invention, the material of the drift size gauge, the weighting rod and the guide sleeve is 45 steel.

From top to bottom, the utility model provides a drifting tubular column utilizes in the cable goes into the oil pipe down, can realize the interior drifting of oil pipe fast, saves the time of going into the tubular column greatly, improves the operating efficiency. Through the setting of each scraping block in the drift size gauge tool, greasy dirt or miscellaneous bits that exist can be scraped to the oil pipe inner wall in the tubular column running-in process, for follow-up operation measure raise the efficiency. Meanwhile, the rotary tension nipple is arranged in the pipe column, so that the cable can not be knotted due to torsional force, the stress state of the pipe column can be monitored, the working condition in the oil pipe can be better known, advance preparation is made for a follow-up descending cutting tool, the risk that the cutting tool is blocked and blocked is effectively avoided, and the use safety of the cutting tool is ensured. The whole tubular column has simple structure, simple and convenient operation and low cost.

Drawings

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

FIG. 1: do the utility model provides a cable formula drifting tubular column structure schematic diagram for oil pipe.

FIG. 2: do the utility model provides a drift size gauge tool's schematic structure diagram.

FIG. 3: is a top view of fig. 2.

FIG. 4: to the utility model provides a structure schematic diagram of the weighting rod

The reference numbers illustrate:

1. a cable;

2. a spigot;

3. rotating the tension nipple;

4. a weight bar; 41. a first overflow aperture;

5. a drift size gauge; 51. a center pole; 52. a scraping block;

6. a guide sleeve; 61. a second overflow aperture.

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.

As shown in fig. 1, the present embodiment provides a cable type drifting tubular column for oil pipe, which includes a cable 1, a bridle 2, a rotary tension nipple 3 and a drifting gauge 5 connected in sequence from top to bottom. The drift gauge 5 comprises a central rod 51 and a scraping assembly provided at a side wall of the central rod 51, the scraping assembly comprising a plurality of scraping blocks 52 provided at intervals along the circumference of the central rod 51.

The faucet 2 is a connecting component for connecting the cable 1 and other tools, and the specific structure thereof is the prior art and will not be described herein. The rotary tension short section 3 has two main functions, firstly, when the drifting tubular column is forced to rotate due to resistance in the process of running into the oil pipe, the rotary part in the rotary tension short section 3 can rotate, and the cable 1 cannot be knotted due to torsional force; and secondly, the tension of the underground pipe column can be recorded, and the stress state of the pipe column can be monitored when the pipe column is blocked.

The specific structure of the rotary tension nipple 3 is the prior art, as long as the two functions can be realized, for example, the rotary tension nipple mentioned in the utility model with application number 201621074195.5 can be adopted, and comprises a rotary connector and a tension sensor, when the pipe column is forced to rotate due to obstruction, the rotary connector and related components can rotate freely, and the components such as the cable 1 and the bridle 2 are fixed, so as to avoid knotting of the cable 1; the tension sensor can detect the stress condition of the pipe column, and the tension sensor can transmit detected data to the ground when the pipe column is clamped, so that an operator can know the working condition in the oil pipe better.

Before carrying out workover to oil pipe, put into the drifting tubular column under the mode that cable 1 was transferred through the cable winch on ground, it is faster to compare in the mode of one sucker rod down. In the process of running the drift tube, due to the plurality of scraping blocks 52 on the central rod 51, oil stains or sundries existing on the inner wall of the oil pipe can be scraped. When the pipe column meets the jam, the stress state of the pipe column can be monitored by utilizing the tension sensor in the rotary tension nipple 3, and the well depth when the pipe column meets the jam can be directly observed through the reading of an instrument panel on the cable winch. And then lifting the cable 1 to lift the drifting tubular column, and if the part of the drifting gauge is clamped in the oil pipe, fishing operation can be carried out after a cutting tool is subsequently put in. So far, accomplish the quick detection of operating mode and the chip removal work in the oil pipe, when subsequently lowering cutting tool, the top that meets the screens position is lowered in, alright in order to avoid cutting tool to meet the dead risk of blocking.

From this, in the drifting tubular column of this embodiment utilizes cable 1 to go into in the oil pipe, can realize the interior drifting of oil pipe fast, saves the time of going into the tubular column greatly, improves the operating efficiency. Through the setting of each scraping block 52 in the drift size gauge 5, can scrape greasy dirt or miscellaneous bits that exist to the oil pipe inner wall in the tubular column running-in process, for follow-up operation measure raise the efficiency. Be equipped with rotatory tension nipple joint 3 in the tubular column simultaneously, not only can guarantee that cable 1 can not receive the torsional force to tie a knot, can also monitor the stress state of tubular column to know the operating mode in the oil pipe better, do the preparation in advance for follow-up running cutting tool, effectively avoid cutting tool to meet and block dead risk, ensure cutting tool's safety in utilization. The whole tubular column has simple structure, simple and convenient operation and low cost.

It should be noted that the cable type drifting tubular column for the oil pipe in the embodiment is mainly used for drifting in the oil pipe and checking working conditions in the oil pipe, and of course, the cable type drifting tubular column can also be used for drifting operation in a casing according to actual needs.

In a specific embodiment, as shown in fig. 1 to 3, in order to improve the scraping effect of the scraping blocks 52 on the oil stains or sundries present on the inner wall of the oil pipe, each scraping block 52 is spirally disposed along the outer wall of the center rod 51. Typically, the scraping elements are integrally formed with the center rod 51.

To further enhance the scraping effect, two or more sets of scraping assemblies are typically axially spaced along the sidewall of the center rod 51. For the number of sets of scraping assemblies and the number of scraping blocks 52 in each set of scraping assemblies, there may be two sets of scraping assemblies in total, each set of scraping assemblies comprising three scraping blocks 52, as shown in fig. 1 to 3. Of course, other numbers of scraping assemblies and scraping blocks 52 may be provided depending on the length of the pipe string, and this embodiment is merely illustrative.

In practical application, in order to keep the whole string at a certain weight during running into the oil pipe so that the string can continue running after encountering slight resistance, a weighting rod 4 is connected between the rotary tension nipple 3 and the central rod 51 as shown in fig. 1.

Specifically, since the oil pipe is generally filled with liquid, in order to ensure smooth running of the drift tube, as shown in fig. 1 and 4, the upper portion of the weight rod 4 has a solid structure, a tubular body with an open lower end is formed at the lower portion of the weight rod 4, and a first overflowing hole 41 is opened in the upper pipe wall of the tubular body. The center rod 51 is a tubular structure with two open ends, and the inner cavity of the center rod is communicated with the inner cavity of the tubular body.

Thus, when the drifting string is put down, liquid in the oil pipe flows into an annular space between the outer wall of the string and the inner wall of the oil pipe from the inner cavity of the central rod 51, the inner cavity of the tubular body and the first overflowing hole 41, and meanwhile, gaps among the scraping blocks 52 can be used for allowing the liquid to flow, so that the resistance of the liquid in the process of putting the drifting string down is reduced, and smooth drifting is guaranteed.

In order to facilitate the smooth running of the drifting pipe column, as shown in fig. 1, the lower end of the central rod 51 is connected with a guide sleeve 6, the lower end of the guide sleeve 6 is provided with a second overflowing hole 61 communicated with the inner cavity of the central rod 51, and the outer wall of the lower end of the guide sleeve 6 is a conical surface which is gradually reduced downwards.

Further, the outer wall of the lower end of the weight rod 4 is screwed with the inner wall of the upper end of the center rod 51, and the outer wall of the lower end of the center rod 51 is screwed with the inner wall of the upper end of the guide sleeve 6. The materials of the drift size gauge 5, the weighting rod 4 and the guide sleeve 6 are all 45 steel, and other materials can be adopted according to needs.

The above are merely exemplary embodiments of the present invention, and are 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.

Claims (10)

1. A cable type drifting tubular column for an oil pipe is characterized by comprising a cable, a horse head, a rotary tension short section and a drifting gauge which are sequentially connected from top to bottom;

the drift size gauge comprises a central rod and a scraping assembly arranged on the side wall of the central rod, wherein the scraping assembly comprises a plurality of scraping blocks arranged along the circumferential direction of the central rod at intervals.

2. The wireline drift tube string for a tubing of claim 1,

each scraping block is spirally arranged along the outer wall of the central rod.

3. The wireline drift tube string for a tubing of claim 2,

the scraping components are axially arranged at intervals along the side wall of the central rod in two or more groups.

4. The wireline pigging string for a tubing of claim 3,

each group of scraping assemblies comprises three scraping blocks.

5. The wireline drift tube string for a tubing of claim 1,

and a weighting rod is also connected between the rotary tension short joint and the central rod.

6. The wireline pigging string for a tubing of claim 5,

the upper part of the weighting rod is of a solid structure, a tubular body with an opening at the lower end is formed at the lower part of the weighting rod, and a first overflowing hole is formed in the upper pipe wall of the tubular body;

the center rod is of a cylindrical structure with two open ends, and the inner cavity of the center rod is communicated with the inner cavity of the tubular body.

7. The wireline pigging string for a tubing of claim 6,

the lower end of the center rod is connected with a guide sleeve, and the lower end of the guide sleeve is provided with a second overflowing hole communicated with the inner cavity of the center rod.

8. The wireline drift tube string for a tubing of claim 7,

the outer wall of the lower end of the guide sleeve is a conical surface which is gradually reduced downwards.

9. The wireline drift tube string for a tubing of claim 7,

the outer wall of the lower end of the weighting rod is in threaded connection with the inner wall of the upper end of the central rod, and the outer wall of the lower end of the central rod is in threaded connection with the inner wall of the upper end of the guide sleeve.

10. The wireline drift tube string for a tubing of claim 7,

the material of the drift size gauge, the weighting rod and the guide sleeve is No. 45 steel.

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