CN112302581A - Rotatory running tool of sand control screen pipe for extended reach well - Google Patents
Rotatory running tool of sand control screen pipe for extended reach well Download PDFInfo
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- CN112302581A CN112302581A CN201910682157.XA CN201910682157A CN112302581A CN 112302581 A CN112302581 A CN 112302581A CN 201910682157 A CN201910682157 A CN 201910682157A CN 112302581 A CN112302581 A CN 112302581A
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- 239000004576 sand Substances 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 34
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 7
- 210000002445 nipple Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
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Abstract
The invention relates to a rotary running tool of a sand control screen pipe for an extended-reach well. The main technical scheme comprises: the upper end of the central tube is connected with the upper joint through threads, and the lower end of the central tube is connected with the driving shaft through threads; the end cover, the bearing A, the split bearing seat, the bearing B and the outer cylinder are sequentially sleeved outside the central pipe; the upper end of the outer cylinder is connected with the end cover through threads, and the lower end of the outer cylinder is connected with the driven shaft through threads; the upper sliding sleeve is arranged in the driven shaft and is connected with the driven shaft through a pin; the bearing C and the spring are sequentially sleeved at the upper end of the upper sliding sleeve; the upper end of the short section is connected with the driven shaft through threads, and the lower end of the short section is connected with the lower joint through threads; the lower sliding sleeve is arranged in the short section and is connected with the short section through a pin; the check ring is sleeved at the lower end of the upper sliding sleeve. The invention allows the drill string above the tool to rotate independently of the sand control screen pipe at the lower part, thereby overcoming the friction between the drill string above the tool and the casing pipe or the well wall, increasing the available gravity and further smoothly lowering the sand control screen pipe to the drilling completion depth.
Description
Technical Field
The invention relates to the field of safe running tools for well completion pipe strings, in particular to a tool for a rotary lower sand control screen of a large-displacement well.
Background
For a large displacement well with shallow vertical depth, because friction of an inclined well section, particularly a horizontal section, is large, a well completion pipe string is difficult to drop to the depth of a drilled well only by means of the self gravity of the pipe string, and the problem is more serious when the vertical ratio is larger. There are three common approaches to this problem. Firstly, the weight of the pipe column in the vertical well section is increased by adding the drill collar and the weighting drill rod, and the well completion pipe column is pushed to a preset position under the action of the self gravity of the pipe column. But this increases the rig work sequence and the additional make-up time. And secondly, using a drag reduction tool. One of the most common types of tools is a drill pipe friction reducing joint that utilizes roller-like components to overcome friction resistance to allow easy running of the completion string. To achieve good results, multiple tools need to be connected into the drill rod column. This increases the cost of drilling and the time required to connect the tools. Thirdly, the whole pipe string including the completion pipe string is rotated to reduce (or eliminate) friction between the pipe string and a casing or a well wall, and available hanging weight is increased, so that the completion pipe string is smoothly underground to a specified position. However, due to the relatively fragile nature of the sand screen, the string with the sand screen is prohibited from rotating during run in.
Disclosure of Invention
The invention aims to provide a rotary running tool of a sand control screen pipe for an extended-reach well, aiming at the problem that the existing pipe column with the sand control screen pipe cannot rotate in the process of running the well. The invention allows the drill string above the tool to rotate independently of the sand control screen pipe at the lower part, thereby overcoming the friction between the drill string above the tool and the casing pipe or the well wall, increasing the available gravity and further smoothly lowering the sand control screen pipe to the drilling completion depth.
The technical scheme of the invention is as follows:
a rotary running tool of a sand control screen pipe for a large-displacement well comprises an upper joint and a lower joint, and is characterized by further comprising a central pipe, an end cover, a bearing A, a bearing B, a split type bearing seat, an outer cylinder, a driving shaft, a bearing C, an upper sliding sleeve, a lower sliding sleeve, a spring, a driven shaft, a short section, a pin A, a pin B and a retainer ring; wherein:
the upper end of the central tube is fixedly connected with the upper joint, and the lower end of the central tube is fixedly connected with the driving shaft; the end cover, the bearing A, the split bearing seat, the bearing B and the outer cylinder are sequentially sleeved outside the central pipe from top to bottom; the upper end of the outer cylinder is fixedly connected with the end cover, and the lower end of the outer cylinder is fixedly connected with the driven shaft; the lower end part of the driving shaft and the upper end part of the driven shaft are respectively provided with an internal spline; the upper sliding sleeve is of a cylindrical structure with thick middle and thin two ends, the upper thin section extends into the driving shaft and forms axial sliding sealing fit with the inner wall of the driving shaft, the lower thin section of the upper sliding sleeve extends to the lower end of the driven shaft and forms axial sliding sealing fit with the inner wall of the driven shaft and is connected with the inner wall of the driven shaft through a radial pin B, the outer wall of the lower thin section of the upper sliding sleeve is provided with an outer convex edge which forms axial sliding sealing fit with the inner wall of the driven shaft, a pressure transmission hole B is arranged on the wall of the upper sliding sleeve below the outer convex edge along the radial direction, the middle thickened section of the upper sliding sleeve is provided with an external spline matched with the internal splines of the driving shaft and the driven shaft, and the middle thickened section; the bearing C and the spring are sequentially sleeved in an annular space formed by the upper end of the upper sliding sleeve and the driving shaft; the upper end of the short section is fixedly connected with the driven shaft, and the lower end of the short section is fixedly connected with the lower joint; the lower sliding sleeve is arranged in the short section and forms axial sliding sealing fit with the short section, the lower sliding sleeve and the short section are connected through a pin A, an outer convex edge is arranged at the lower end part of the lower sliding sleeve, and a pressure transfer hole A in the radial direction is arranged above the outer convex edge; the check ring is sleeved at the upper end of the lower sliding sleeve and is positioned in an annular space formed by the driven shaft, the upper sliding sleeve short section and the lower sliding sleeve, the check ring is an elastic part, and when the upper sliding sleeve moves upwards, the check ring is separated from the upper sliding sleeve and then contracts to limit the upper sliding sleeve; the lower end of the upper sliding sleeve extends into the lower sliding sleeve.
The above scheme further comprises:
the split type bearing seat is composed of two identical semicircular rings.
The external diameter of retaining ring after the shrink slightly is greater than lower sliding sleeve upper end internal diameter and the internal diameter slightly is less than last sliding sleeve lower extreme external diameter.
The upper end of the central pipe is connected with the upper joint through threads, and the lower end of the central pipe is connected with the driving shaft through threads; the upper end of the outer cylinder is connected with the end cover through threads, and the lower end of the outer cylinder is connected with the driven shaft through threads; the upper end of the short section is connected with the driven shaft through threads, and the lower end of the short section is connected with the lower joint through threads.
The pins B are uniformly distributed in the circumferential direction; the pins A are circumferentially and uniformly distributed.
And a Y-shaped sealing ring A is arranged between the central pipe and the outer barrel.
And a Y-shaped sealing ring B is arranged between the lower sliding sleeve and the short section.
The invention has the following beneficial effects: the tool allows the drill string above the tool to rotate independently of the lower sand control screen, thereby reducing or eliminating friction between the drill string above the tool and the casing or the well wall, increasing available gravity and further smoothly lowering the sand control screen to the drilling completion depth; the increased non-productive time and cost of connecting multiple drag reducing tools is reduced as compared to using drag reducing tools.
Drawings
FIG. 1 is a schematic representation of a rotary sandscreen running tool for extended reach wells according to the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken at D-D of FIG. 1;
FIG. 6 is a cross-sectional view taken at E-E of FIG. 1;
FIG. 7 is a cross-sectional view at F-F in FIG. 1;
FIG. 8 is a schematic representation of the construction of the tool of the present invention in connection with a drill string and completion string;
FIG. 9 is a schematic view of the tool of the present invention in a locked state;
FIG. 10 is a cross-sectional view taken at G-G of FIG. 9;
FIG. 11 is a cross-sectional view taken at H-H in FIG. 9;
fig. 12 is a schematic view of the tool of the present invention in a freely rotated state.
In the figure: 1. an upper joint, 2, a central pipe, 3, an end cover, 4, a bearing A, 5, a split bearing seat, 6, a bearing B, 7, an outer cylinder, 8, a driving shaft, 9, a Y-shaped sealing ring A, 10, a bearing C, 11, a spring, 12, an O-shaped sealing ring A, 13, an upper sliding sleeve, 14, a driven shaft, 15, an O-shaped sealing ring B, 16, a Y-shaped sealing ring B, 17, an O-shaped sealing ring C, 18, a lower sliding sleeve, 19, a pressure transfer hole A, 20, a pin A, 21, a short section, 22, a lower joint, 23, an O-shaped sealing ring D, 24, a pressure transfer hole B, 25, a pin B, 26, a check ring, 27, an O-shaped sealing ring E, 28, an O-shaped sealing ring F, 29, an O-shaped sealing ring G, 30, a drill strings, 31, a large-displacement well sand control screen rotating running tool, 32, a hanger feeding tool, 33, a hanger, 34, a sleeve, 35, a grading cement injector, 38. a sand control screen.
Detailed Description
The following will be described in further detail with reference to the accompanying drawings.
Example 1, referring to fig. 1 to 7, a rotary running tool of a sand control screen for a large displacement well comprises an upper joint 1, a lower joint 22, a central pipe 2, an end cover 3, a bearing a4, a bearing B6, a split bearing seat 5, an outer cylinder 7, a driving shaft 8, a bearing C10, an upper sliding sleeve 13, a lower sliding sleeve 18, a spring 11, a driven shaft 14, a nipple 21, a pin a20, a pin B25 and a retainer ring 26. Wherein:
the upper end of the central tube 2 is fixedly connected with the upper joint 1, and the lower end is fixedly connected with the driving shaft 8. The end cover 3, the bearing A4, the split type bearing seat 5, the bearing B6 and the outer cylinder 7 are sequentially sleeved outside the central tube 2 from top to bottom. The upper end of the outer cylinder 7 is fixedly connected with the end cover 3, and the lower end is fixedly connected with the driven shaft 14. The lower end part of the driving shaft 8 and the upper end part of the driven shaft 14 are respectively provided with an internal spline. The upper sliding sleeve 13 is a cylindrical structure with thick middle and thin two ends, the upper thin section extends into the driving shaft 8 and forms axial sliding sealing fit with the inner wall of the driving shaft 8, the lower thin section of the upper sliding sleeve 13 extends to the lower end of the driven shaft 14 and forms axial sliding sealing fit with the inner wall of the driven shaft 14 and is connected with the inner wall of the driven shaft 14 through a radial pin B25, the outer wall of the lower thin section of the upper sliding sleeve 13 is provided with an outer convex edge which forms axial sliding sealing fit with the inner wall of the driven shaft 14, meanwhile, the wall of the upper sliding sleeve 13 below the outer convex edge is radially provided with a pressure transfer hole B24, the middle thickened section of the upper sliding sleeve 13 is provided with an external spline which is matched with the internal splines of the driving shaft 8 and the driven shaft 14, and meanwhile, the middle. The bearing C10 and the spring 11 are sleeved in turn in the annular space formed by the upper end of the upper sliding sleeve 13 and the driving shaft 8. The upper end of the short section 21 is fixedly connected with the driven shaft 14, and the lower end is fixedly connected with the lower joint 22. The lower sliding sleeve 18 is arranged in the short section 21 and forms axial sliding sealing fit with the short section 21, the lower sliding sleeve 18 and the short section 21 are connected through a pin A20, an outer convex edge is arranged at the lower end part of the lower sliding sleeve 18, and a radial pressure transmission hole A19 is arranged above the outer convex edge. The retainer ring 26 is sleeved on the upper end of the lower sliding sleeve 18 and is positioned in an annular space formed by the driven shaft 14, the short section 21 of the upper sliding sleeve 13 and the lower sliding sleeve 18, the retainer ring 26 is an elastic part, and when the upper sliding sleeve 13 moves upwards, the retainer ring 26 is separated from the upper sliding sleeve 13 and then shrinks to limit the upper sliding sleeve 13. The lower end of the upper sliding sleeve 13 extends into the lower sliding sleeve 18.
Example 2, further includes, on the basis of the above example 1:
the split bearing seat 5 is composed of two identical semicircular rings.
The contracted outer diameter of the retainer ring 26 is slightly larger than the inner diameter of the upper end of the lower sliding sleeve 18, and the inner diameter of the retainer ring is slightly smaller than the outer diameter of the lower end of the upper sliding sleeve 13.
The upper end of the central tube 2 is connected with the upper joint 1 through threads, and the lower end of the central tube is connected with the driving shaft 8 through threads; the upper end of the outer cylinder 7 is connected with the end cover 3 through threads, and the lower end of the outer cylinder is connected with the driven shaft 14 through threads; the upper end of the nipple 21 is connected with the driven shaft 14 through threads, and the lower end of the nipple is connected with the lower joint 22 through threads.
The pins B25 are 4 pins which are uniformly distributed in the circumferential direction; the pins A20 are 6 pins which are evenly distributed in the circumferential direction.
A Y-shaped sealing ring A9 is arranged between the central tube 2 and the outer tube 7.
And a Y-shaped sealing ring B16 is arranged between the lower sliding sleeve 18 and the short section 21.
Exemplary embodiment 3:
referring to the attached drawing 1, the rotary running tool of the sand control screen pipe for the extended reach well comprises an upper joint 1, a central pipe 2, an end cover 3, a bearing A4, a bearing B6, a bearing C10, a split bearing seat 5, an outer cylinder 7, a driving shaft 8, an upper sliding sleeve 13, a lower sliding sleeve 18, a spring 11, a driven shaft 14, a short section 21, a lower joint 22, a pin A20, a pin B25, a retainer ring 26, a Y-shaped seal ring A9, a Y-shaped seal ring B16, an O-shaped seal ring A12, an O-shaped seal ring B15, an O-shaped seal ring C17, an O-shaped seal ring D23, an O-shaped seal ring E27, an O-shaped seal ring F28 and an O. Wherein:
the upper end of the central tube 2 is connected with the upper joint 1 through threads, and the lower end is connected with the driving shaft 8 through threads. The end cover 3, the bearing A4, the split type bearing seat 5, the bearing B6 and the outer cylinder 7 are sequentially sleeved outside the central tube 2, wherein a Y-shaped sealing ring A9 is arranged between the outer cylinder 7 and the central tube 2; the upper end of the outer cylinder 7 is connected with the end cover 3 through threads, and the lower end of the outer cylinder is connected with the driven shaft 14 through threads and is provided with an O-shaped sealing ring A12; the upper sliding sleeve 13 is arranged in the driven shaft 14, is connected with the driven shaft 14 through a pin B25 and is provided with an O-shaped sealing ring B15; the upper end of the upper sliding sleeve 13 extends into the driving shaft 8 and is provided with an O-shaped sealing ring D23, and the lower end extends into the lower sliding sleeve 18; the upper sliding sleeve 13 is provided with a pressure transmission hole 24 along the radial direction; the bearing C10 and the spring 11 are sleeved at the upper end of the upper sliding sleeve 13 in sequence; the upper end of the short section 21 is connected with the driven shaft 14 through threads and is provided with an O-shaped sealing ring C17, and the lower end of the short section is connected with the lower joint 22 through threads and is provided with an O-shaped sealing ring F28; the lower sliding sleeve 18 is arranged in the short section 21, is connected with the short section through a pin A20 and is provided with an O-shaped sealing ring G29; an outward boss is arranged at the lower end of the upper sliding sleeve 13, an inward boss is arranged at the lower end of the driven shaft 14, and a pressure transmission hole B24 along the radial direction is arranged on the wall of the upper sliding sleeve 13 at the annular space position between the boss at the lower end of the upper sliding sleeve 13 and the boss at the lower end of the driven shaft 14; the lower end of the lower sliding sleeve 18 is provided with an outward boss, the short section 21 is provided with an inward boss, and the wall of the lower sliding sleeve 18 is provided with a radial pressure transmission hole A19 at the position of an annular space formed by the boss of the lower sliding sleeve 18 and the boss of the short section 21; the retainer ring 26 is sleeved at the lower end of the upper sliding sleeve 13 and is located in an annular space formed by the driven shaft 14, the upper sliding sleeve 13, the short section 21 and the lower sliding sleeve 18, the retainer ring 26 is an elastic part, and when the upper sliding sleeve 13 moves upwards, the retainer ring 26 is separated from the upper sliding sleeve 13 and then shrinks to limit the upper sliding sleeve 13. The contracted outer diameter of the retainer ring 26 is slightly larger than the inner diameter of the upper end of the lower sliding sleeve 18, and the inner diameter is slightly smaller than the outer diameter of the lower end of the upper sliding sleeve 13.
Referring to fig. 2, the split bearing housing 5 is formed of two identical semi-circular rings.
Referring to fig. 3, the lower end of the drive shaft 8 is provided with an internal spline.
Referring to fig. 4, the lower end of the driven shaft 14 is provided with an internal spline, the outer part of the upper sliding sleeve 13 is provided with an external spline matched with the internal spline, and the upper sliding sleeve 13 and the moving shaft 14 form a spline fit.
Referring to fig. 5, the lower end of the upper sliding sleeve 13 is connected with the driven shaft 14 through pins B25, and the number of the pins B25 is 4 which are uniformly distributed in the circumferential direction.
Referring to fig. 6, the retainer ring 26 is in a radially expanded state.
Referring to fig. 7, the lower end of the lower sliding sleeve 18 is connected with the short section 21 through pins a20, and the number of the pins a20 is 6 that are uniformly distributed in the circumferential direction.
Referring to the attached figure 8, when the drilling string is connected for use, the sequence from the well head to the well bottom is as follows: a drill string 30, a large displacement well sand screen rotary running tool 31 of the present invention, a hanger running tool 32, a hanger 33, a casing 34, a stage cementing 35, a packer 36, a blind plate 37, a sand screen 38.
Fig. 9-11 are schematic views of the rotary running tool of the sand control screen for extended reach wells in a locked state. In a locking state, the internal spline of the driving shaft 8 is engaged with the external spline of the upper sliding sleeve 13, the internal spline of the driven shaft 14 is engaged with the external spline of the upper sliding sleeve 13, the spring 11 is compressed, the 4 pins B25 connecting the driven shaft 14 and the upper sliding sleeve 13 are sheared, the retaining ring 26 is separated from the upper sliding sleeve 13 and is contracted along the radial direction and is positioned between the upper sliding sleeve 13 and the lower sliding sleeve 18, and the retaining ring 26 and the lower sliding sleeve 18 limit the downward movement of the upper sliding sleeve 13.
FIG. 12 is a schematic diagram of a rotary running tool of a sand control screen for extended reach wells in a freely rotating state. When the driving shaft is in a free rotation state, the inner spline of the driving shaft 8 is separated from the outer spline of the upper sliding sleeve 13, and the inner spline of the driven shaft 14 is meshed with the outer spline of the upper sliding sleeve 13; 4 pins B25 connecting the driven shaft 14 and the upper sliding sleeve 13 are cut off, and 6 pins A20 connecting the lower sliding sleeve 18 and the short section 21 are cut off; the retainer ring 26 is separated from the upper sliding sleeve 13 and contracted in the radial direction, and is positioned between the upper sliding sleeve 13 and the lower sliding sleeve 18, and the lower end of the lower sliding sleeve 18 is in contact with the lower joint 22.
The sand control screen pipe rotary running tool for the extended reach well is assembled according to the attached drawing 1 before being used and then is connected into a pipe column according to the attached drawing 8. Since the internal splines of the driving shaft 8 are not engaged with the external splines of the upper sliding sleeve 13 in the initial state of the tool, the upper joint 1, the base pipe 2 and the driving shaft 8 rotate together when the wellhead drives the drill string 30 to rotate, and other parts of the tool do not rotate, i.e. the drill string 30 above the extended reach sandscreen rotary running tool 31 can rotate independently of the completion string below the tool, including the sandscreen 38. At this time, the sand control screen rotary running tool 31 for extended reach well can transmit gravity and cannot transmit torque. Referring to fig. 8, in the process of running the pipe string in the extended reach well, when the weight of the pipe string is not enough to make the completion pipe string run to the depth of the well, the drill string 30 is driven to rotate at the well head, so that the friction between the drill string 30 and the casing or the well wall can be reduced or eliminated, the available gravity is increased, and the pipe string is pushed to continue running. The drill string 30 may be repeatedly rotated multiple times as the case may be until the string is lowered to the completion depth.
When the pipe string is lowered to the completion of the drilling depth and the well cementation operation is completed, some hangers 33 need to be reversed and released, but since the drill string 30 above the sand control screen rotating running tool 31 for extended reach wells can rotate independently of the lower hanger 33, the hangers 33 cannot be released in a reversed manner. At this time, the sand control screen pipe rotary running tool 31 for the extended reach well needs to be adjusted to be in a locking state, namely rigid connection, and the specific operations are as follows: opening a mud pump at a wellhead and gradually increasing the discharge capacity of the pump, and referring to fig. 8, starting pressure in the pipe column above the blind plate 37, and transmitting the pressure to the upper sliding sleeve 13 through a pressure transmission hole B24; when the pressure reaches a certain value, 4 pins B25 are sheared off, the upper sliding sleeve 13 moves upwards for a certain distance, meanwhile, the wellhead drives the drill string 30 to rotate, and the upper sliding sleeve 13 continues to move upwards until the upper end of the upper sliding sleeve contacts with the step inside the driving shaft 8 to stop moving; at this time, the spring 11 is compressed, and the retainer ring 26 is separated from the upper sliding sleeve 13 and contracted in the radial direction; when the pressure reaches a certain value, the pressure of the wellhead mud pump is relieved, and the upper sliding sleeve 13 moves downwards until the lower end of the upper sliding sleeve is contacted with the retainer ring 26 under the action of the restoring force of the spring 11; the rotary running tool 31 for the large displacement well sand control screen is locked and can transmit gravity and torque with reference to fig. 9.
If the extended reach well sand control screen rotation running tool 31 is to be adjusted to the initial condition again, the drill string 30 above the extended reach well sand control screen rotation running tool 31 may be rotated independently of the completion string below the tool. The following operations may be performed: opening a mud pump at a wellhead and gradually increasing the discharge capacity of the pump, and referring to fig. 8, starting pressure in the pipe column above the blind plate 37, and transmitting the pressure to the lower sliding sleeve 18 through a pressure transmission hole A19; when the pressure reaches a certain value, the 6 pins 20 are sheared off, and the lower sliding sleeve 18 moves downwards until the lower end of the lower sliding sleeve is contacted with the lower joint 22; under the action of the restoring force of the spring 11, the upper sliding sleeve 13 moves downwards to restore the initial state of the spring 11; at this time, the external splines of the upper sliding sleeve 13 are separated from the external splines of the driving shaft 8, and the sand control screen pipe rotating running tool 31 for the extended reach well is in a free rotation state, referring to fig. 12, and can transmit gravity and can not transmit torque.
Claims (7)
1. A rotary running tool of a sand control screen for a large-displacement well comprises an upper joint (1) and a lower joint (22), and is characterized by further comprising a central pipe (2), an end cover (3), a bearing A (4), a bearing B (6), a split type bearing seat (5), an outer cylinder (7), a driving shaft (8), a bearing C (10), an upper sliding sleeve (13), a lower sliding sleeve (18), a spring (11), a driven shaft (14), a short section (21), a pin A (20), a pin B (25) and a retainer ring (26); wherein:
the upper end of the central tube (2) is fixedly connected with the upper joint (1), and the lower end is fixedly connected with the driving shaft (8); the end cover (3), the bearing A (4), the split bearing seat (5), the bearing B (6) and the outer cylinder (7) are sequentially sleeved outside the central tube (2) from top to bottom; the upper end of the outer cylinder (7) is fixedly connected with the end cover (3), and the lower end of the outer cylinder is fixedly connected with the driven shaft (14); the lower end part of the driving shaft (8) and the upper end part of the driven shaft (14) are respectively provided with an internal spline; the upper sliding sleeve (13) is of a cylindrical structure with thick middle and thin two ends, the thin section at the upper part extends into the driving shaft (8) and forms axial sliding sealing fit with the inner wall of the driving shaft (8), the thin section at the lower part of the upper sliding sleeve (13) extends to the lower end of the driven shaft (14) and forms axial sliding sealing fit with the inner wall of the driven shaft (14), and is connected with the driven shaft (14) through a radial pin B (25), the outer wall of the thin section at the lower part of the upper sliding sleeve (13) is provided with an outer convex edge which forms axial sliding sealing fit with the inner wall of the driven shaft (14), meanwhile, the wall of the upper sliding sleeve (13) below the outer convex edge is radially provided with a pressure transfer hole B (24), the thick section at the middle part of the upper sliding sleeve (13) is provided with an external spline matched with the internal splines of the driving shaft (8) and the driven shaft (14), and the thick section; a bearing C (10) and a spring (11) are sequentially sleeved in an annular space formed by the upper end of the upper sliding sleeve (13) and the driving shaft (8); the upper end of the short section (21) is fixedly connected with the driven shaft (14), and the lower end of the short section is fixedly connected with the lower joint (22); the lower sliding sleeve (18) is arranged in the short section (21) and forms axial sliding sealing fit with the short section (21), the lower sliding sleeve and the short section are connected through a pin A (20), the lower end part of the lower sliding sleeve (18) is provided with an outward convex edge, and a pressure transfer hole A (19) along the radial direction is arranged above the outward convex edge; the check ring (26) is sleeved at the upper end of the lower sliding sleeve (18) and is positioned in an annular space formed by the driven shaft (14), the short section (21) of the upper sliding sleeve (13) and the lower sliding sleeve (18), the check ring (26) is an elastic part, and when the upper sliding sleeve (13) moves upwards, the check ring (26) is separated from the upper sliding sleeve (13) and then is contracted to limit the upper sliding sleeve (13); the lower end of the upper sliding sleeve (13) extends into the lower sliding sleeve (18).
2. The rotary sandscreen running tool for extended reach wells according to claim 1, wherein: the split type bearing seat (5) is composed of two identical semicircular rings.
3. The sand control screen rotary running tool for extended reach wells according to claim 1 or 2, wherein: the outer diameter of the contracted retainer ring (26) is slightly larger than the inner diameter of the upper end of the lower sliding sleeve (18), and the inner diameter of the contracted retainer ring is slightly smaller than the outer diameter of the lower end of the upper sliding sleeve (13).
4. The rotary sandscreen running tool for extended reach wells according to claim 3, wherein: the upper end of the central tube (2) is connected with the upper joint (1) through threads, and the lower end of the central tube is connected with the driving shaft (8) through threads; the upper end of the outer cylinder (7) is connected with the end cover (3) through threads, and the lower end of the outer cylinder is connected with the driven shaft (14) through threads; the upper end of the short section (21) is connected with the driven shaft (14) through threads, and the lower end of the short section is connected with the lower joint (22) through threads.
5. The rotary sandscreen running tool for extended reach wells according to claim 3, wherein: the pins B (25) are 4 pins which are uniformly distributed in the circumferential direction; the pins A (20) are 6 pins which are uniformly distributed in the circumferential direction.
6. The rotary sandscreen running tool for extended reach wells according to claim 3, wherein: and a Y-shaped sealing ring A (9) is arranged between the central tube (2) and the outer tube (7).
7. The rotary sandscreen running tool for extended reach wells according to claim 3, wherein: and a Y-shaped sealing ring B (16) is arranged between the lower sliding sleeve (18) and the short section (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682157.XA CN112302581A (en) | 2019-07-26 | 2019-07-26 | Rotatory running tool of sand control screen pipe for extended reach well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682157.XA CN112302581A (en) | 2019-07-26 | 2019-07-26 | Rotatory running tool of sand control screen pipe for extended reach well |
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| Publication Number | Publication Date |
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| CN112302581A true CN112302581A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910682157.XA Pending CN112302581A (en) | 2019-07-26 | 2019-07-26 | Rotatory running tool of sand control screen pipe for extended reach well |
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| CN (1) | CN112302581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814570A (en) * | 2021-03-12 | 2021-05-18 | 西安石油大学 | Self-driven rotary casing running tool |
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2019
- 2019-07-26 CN CN201910682157.XA patent/CN112302581A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814570A (en) * | 2021-03-12 | 2021-05-18 | 西安石油大学 | Self-driven rotary casing running tool |
| CN112814570B (en) * | 2021-03-12 | 2022-11-01 | 西安石油大学 | Self-driven rotary casing running tool |
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