CN112901123A - Filling sand prevention tool - Google Patents
Filling sand prevention tool Download PDFInfo
- Publication number
- CN112901123A CN112901123A CN202110176405.0A CN202110176405A CN112901123A CN 112901123 A CN112901123 A CN 112901123A CN 202110176405 A CN202110176405 A CN 202110176405A CN 112901123 A CN112901123 A CN 112901123A
- Authority
- CN
- China
- Prior art keywords
- hole
- pipe body
- valve
- tube
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/04—Gravelling of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
A packed sand control tool, comprising: a steering tube including a first end, a second end opposite the first end, a main passage, a first through hole, and a second through hole; one end of the first pipe body is sleeved on the first end part; the second pipe body is arranged in the first pipe body, and the first end part is sleeved on one end of the second pipe body; the third pipe body is sleeved on the second end part, and a second channel and a third through hole which radially and outwards extends from the second channel are arranged in the third pipe body; the one-way valve is arranged in the second channel and is positioned on one side, close to the steering pipe, of the third through hole; a plug blocking a portion of the main channel within the second end; wherein the one-way valve is only passable through fluid flowing from the second through-hole to the third through-hole. The filling sand control tool is high in efficiency when used for reverse circulation well washing operation, and the risk of sand blocking is reduced.
Description
Technical Field
The present invention relates to oil well exploitation technology, and is especially one kind of sand preventing and packing tool.
Background
Gravel packing sand control operations are one of the most effective sand control methods for developing unconsolidated sandstone reservoirs at present. The gravel packing sand control operation mainly comprises a positive circulation packing operation and a reverse circulation well washing operation. In a positive-cycle packing operation, a sand-laden fluid with gravel is injected through a packing tool into the annulus between the screen and the wellbore, where the gravel forms a gravel pack. A reverse circulation well flushing operation is then performed in which a flushing fluid is injected into the gravel pack to carry the loose excess gravel back to the surface.
However, the current reverse circulation well washing operation is difficult to completely remove gravel in the gravel pack, the gravel is easy to enter a fit clearance, so that a movable mechanism is blocked, and the subsequent operation is difficult due to sand jamming, for example, when a pipe string is lifted. Meanwhile, in the positive circulation filling operation, large-discharge sand needs to be added, the sand-carrying liquid is easily eroded when passing through the filling hole, the performance of the filling tool is affected, and the cost for replacing the filling tool is extremely high.
Disclosure of Invention
The application provides a fill sand control instrument, it is efficient when adopting this kind of sand control instrument of filling to carry out reverse circulation well-flushing operation, has reduced the risk of sand card.
The packing sand control tool comprises:
a steerer tube comprising a first end, a second end opposite the first end, a main passage extending from the first end to the second end, a first throughbore between the first and second ends extending radially outward from the main passage, and a second throughbore disposed within the tube wall and extending axially through the steerer tube;
one end of the first pipe body is sleeved on the first end part;
the second pipe body is arranged in the first pipe body, the first end part is sleeved on one end of the second pipe body, a first channel communicated with the main channel of the steering pipe is arranged in the second pipe body, and an annular channel communicated with one end of the second through hole is formed between the second pipe body and the first pipe body;
the third pipe body is sleeved on the second end part, a second channel and a third through hole which radially and outwards extends from the second channel are arranged in the third pipe body, and the second channel is communicated with the other end of the second through hole;
the one-way valve is arranged in the second channel and is positioned on one side, close to the steering pipe, of the third through hole;
a plug blocking a portion of the main channel within the second end;
wherein the one-way valve is only passable through fluid flowing from the second through-hole to the third through-hole.
And in the positive circulation filling operation stage, the filling sand control tool is lowered into the well, the first through hole of the steering pipe is positioned in an oil layer to be constructed, then the sand-carrying fluid is injected into the first channel of the second pipe body, enters the main channel of the steering pipe along the first channel and is discharged out of the steering pipe through the first through hole of the steering pipe, so that gravel in the sand-carrying fluid is filled into the shaft, and a gravel filling layer is formed in an annular gap between the filling sand control tool and the shaft.
And in the reverse circulation well washing operation stage, well washing liquid is injected into an annular channel between the first pipe body and the second pipe body, the well washing liquid enters the second through hole of the steering pipe from the annular channel and then flows into a second channel of the third pipe body through the second through hole, the one-way valve is opened at the moment, and the well washing liquid in the second channel can be conveyed out of the third pipe body through the third through hole, so that the well washing liquid enters an annular gap between the filling sand control tool and the shaft. The flushing fluid then flows along the annular gap into the first through hole of the steering tube, during which the flushing fluid flushes the gravel pack in the annular gap, the flushing fluid bringing excess gravel in the gravel pack together into the first through hole. The well washing liquid carries gravel to enter into the first channel of the second body through the first through hole and the main channel of the steering tube in sequence, the second body is communicated to the ground through the oil pipe at the moment, and the well washing liquid in the second body can return to the ground through the oil pipe, so that redundant gravel in the gravel packing layer is brought to the ground. Therefore, the well washing efficiency is high when the filling sand control tool is used for reverse circulation well washing operation, redundant gravel can be fully brought to the ground, and the risk of sand blocking is remarkably reduced.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a first partial cross-sectional view of a packing sand control tool in an embodiment of the present application;
FIG. 2 is a second partial cross-sectional view of packing a sand control tool according to an embodiment of the present application;
FIG. 3 is a third partial cross-sectional view of packing a sand control tool according to an embodiment of the present application;
FIG. 4 is a fourth partial cross-sectional view of a packing sand control tool according to an embodiment of the present application;
FIG. 5 is a cross-sectional view of a steerer tube embodiment of the present application;
FIG. 6 is a cross-sectional view of a packed sand control tool during a phase of a forward cycle packing operation in an embodiment of the present application;
FIG. 7 is a cross-sectional view of a packed sand control tool during a reverse circulation well flushing operation stage in an embodiment of the present application.
Detailed Description
Referring to fig. 1-4, fig. 1-4 illustrate a packed sand control tool of the present embodiment. The packing sand control tool is used for implementing gravel packing sand control operation. The filling sand control tool comprises a steering pipe 3, a first pipe body 1, a second pipe body 2, a third pipe body 4, a one-way valve 5 and a plug 7.
As shown in fig. 3, the steering tube 3 has a substantially cylindrical structure. The steering tube 3 is a straight tube. The steerer tube 3 includes a first end 32 and a second end 33 opposite the first end 32. The first end portion 32 has an outer circumferential wall provided with an external thread, and an inner circumferential wall of the first end portion 32 is provided with an internal thread. The outer circumferential wall of the second end portion 33 is provided with an external thread, and the inner circumferential wall of the second end portion 33 is provided with an internal thread. A main passage 31 is provided in the steering tube 3. The main channel 31 is a straight channel, the cross-section of which is circular. The main channel 31 is arranged coaxially with the steerer tube 3. The main channel 31 extends through the steerer tube 3 from a first end 32 to a second end 33 of the steerer tube 3.
As shown in fig. 3 and 5, the tube wall of the steering tube 3 is further provided with a first through hole 34, and the first through hole 34 penetrates through the tube wall of the steering tube 3. The first through hole 34 is located in a region between the first end portion 32 and the second end portion 33. The first through hole 34 extends from the main passage 31 to the outer peripheral wall of the steerer tube 3. The steering tube 3 is also provided with a second through hole 35. The second through hole 35 is arranged in the pipe wall, and the second through hole 35 axially penetrates through the steering pipe 3. That is, the second through hole 35 extends within the tube wall from the first end 32 to the second end 33.
As shown in fig. 6 and 7, the first pipe 1 is a straight circular pipe, and one end of the first pipe 1 is fitted over the first end 32 of the steering pipe 3 and is screwed to the first end 32. As shown in fig. 1 to 3, the first pipe body 1 includes an upper joint 11, an outer cylinder 12, a plurality of first seal pipes 13, and a second seal pipe 14. The upper joint 11, the outer cylinder 12, the plurality of first seal pipes 13, and the second seal pipe 14 are all of a cylindrical structure. The upper joint 11, the outer cylinder 12, the plurality of first seal pipes 13, and the second seal pipe 14 are coaxially provided. The plurality of first seal pipes 13 are arranged in sequence and connected in sequence. One end of the upper joint 11 is connected with one end of the outer cylinder 12 in a threaded manner. The other end of the outer cylinder 12 is screwed with one end of a first sealing pipe 13. The end of the last first sealing tube 13 facing away from the outer cylinder 12 is screwed to the end of the second sealing tube 14. The other end of the second sealing tube 14 is provided with an internal thread which is matched with the external thread of the first end part 32 of the steering tube 3, the end of the second sealing tube 14 is sleeved on the first end part 32 of the steering tube 3, and the second sealing tube 14 is in threaded connection with the steering tube 3.
As shown in fig. 6 and 7, the second tubular body 2 is a straight circular tube. The outer diameter of the second pipe body 2 is smaller than the inner diameter of the first pipe body 1. A first passage 21 is provided in the second tube 2. The first channel 21 is a straight channel. The first passage 21 is circular in cross-section. The second pipe body 2 is disposed inside the first pipe body 1. The length of the second tube body 2 is slightly less than that of the first tube body 1. The second tube 2 and the first tube 1 may be coaxially disposed. An annular channel 10 is formed between the outer peripheral wall of the second tubular body 2 and the inner peripheral wall of the first tubular body 1.
As shown in fig. 1 to 3, the first end portion 32 of the steering tube 3 is sleeved on one end of the second tube body 2 close to the steering tube 3, and the steering tube 3 is in threaded connection with the second tube body 2. The second tubular body 2 comprises a spigot 22, a receiving cylinder 23, a lower joint 24, a tubing nipple 25 and a change-over joint 26. The insertion tube 22, the receiving cylinder 23, the lower joint 24, the oil pipe nipple 25 and the variable buckle joint 26 are all of cylindrical structures. The insertion tube 22, the receiving cylinder 23, the lower joint 24, the tubing nipple 25 and the change-over joint 26 are coaxially arranged. The tubing sub 25 may be a double male tubing sub 25. The cannula 22 is inserted into the receiving cylinder 23 from one end of the receiving tube. The other end of the receiving cylinder 23 is threadedly coupled to one end of the lower joint 24. The other end of the lower joint 24 is in threaded connection with one end of the tubing nipple 25. The other end of the oil pipe nipple 25 is in threaded connection with one end of the thread-changing joint 26. The other end of the oil pipe nipple 25 is provided with an external thread matched with the internal thread of the first end part 32 of the steering pipe 3, and the one end of the oil pipe nipple 25 is in threaded connection with the first end part 32 of the steering pipe 3. The first passageway 21 is comprised of the internal bores of the cannula 22, receiver 23, lower connector 24, tubing nipple 25 and adapter 26.
As shown in fig. 3, 6 and 7, the third tube 4 is a straight circular tube. One end of the third pipe 4 is fitted around the second end 33 of the steering pipe 3, and is screwed to the second end 33. A second channel 41 is provided in the third tube 4, and the second channel 41 communicates with the second through hole 35 in the steering tube 3. The third tube 4 is further provided with a third through hole 34. The third through hole 34 radially penetrates the wall of the third tubular body 4, that is, the third through hole 34 extends radially outward from the second passage 41 to the outer peripheral wall of the third tubular body 4. The end of the second channel 41 facing away from the steerer tube 3 is closed.
As shown in fig. 3 and 4, the third pipe body 4 includes an intermediate joint 42, a plurality of third seal pipes 43, and a steering circulation joint 44. The intermediate joint 42, the plurality of third seal pipes 43, and the steering circulation joint 44 are all of a cylindrical structure. The intermediate joint 42, the plurality of third seal pipes 43, and the steering circulation joint 44 are coaxially disposed. The third through hole 34 is disposed on a pipe wall of the steering circulation joint 44 and radially penetrates the steering circulation joint 44. A plurality of third seal pipes 43 are connected together. The third sealing tube 43 may be screwed. One end of the intermediate joint 42 is provided with an internal thread matching the external thread of the second end 33 of the steering tube 3, this end of the intermediate joint 42 being fitted over the second end 33 of the steering tube 3 and being in threaded connection with the second end 33. The inner bore of the intermediate joint 42 communicates with the second through-hole 35 of the steering tube 3. The other end of the intermediate joint 42 is screwed to one end of a first third sealing tube 43. One end of the last third seal pipe 43 is screwed with one end of the steering circulation joint 44. The end of the inner bore of the swivel joint 44 facing away from the third sealing tube 43 is closed. The second passage 41 is composed of an inner bore of an intermediate joint 42, a plurality of third seal pipes 43, and a steering circulation joint 44.
The plug 7 is cylindrical. The outer circumferential wall of the plug 7 is provided with an external thread which is matched with the internal thread of the second end 33 of the steering tube 3. Plug 7 is disposed within second end 33 and is located in main channel 31. The plug 7 is detachably connected to the second end 33, for example, by a screw or a thread. The plug 7 blocks the end of the main channel 31 close to the third tubular body 4.
The check valve 5 is disposed in the third tube 4. The check valve 5 is provided in the second passage 41 on the side of the third through hole 34 close to the steering tube 3. In the present embodiment, the check valve 5 is installed on the steering circulation joint 44, and protrudes into the third seal pipe 43.
As shown in fig. 4, the steering circulation joint 44 is provided with a mount 442 near one end of the steering pipe 3. The mount 442 is provided in the steering circulation joint 44. The mounting portion 442 is cylindrical and is provided coaxially with the second passage 41. The mounting portion 442 has an internal thread disposed in an internal bore thereof. The mount 442 is located on the side of the third through hole 34 close to the steerer tube 3.
The check valve 5 includes a valve cylinder 51, a valve seat 54, a valve core 52, and an elastic member 51. The valve cylinder 51 and the valve seat 54 are both cylindrical. The valve cylinder 51 is disposed inside the third pipe 4 and is disposed coaxially with the third pipe 4. In this embodiment, one end of the valve cylinder 51 is provided with an external thread that matches the internal thread of the mounting portion 442. This end of the valve cylinder 51 is inserted into the inner hole of the mount 442 and is screwed with the mount 442. The other end of the valve cylinder 51 protrudes from the mounting portion 442 in a direction toward the steering pipe 3. The inner diameter of the valve seat 54 is smaller than the inner diameter of the valve cylinder 51. One end of the valve seat 54 is connected to one end of the valve cylinder 51 near the steerer tube 3, and the valve seat 54 and the valve cylinder 51 are coaxially disposed. A threaded connection may be provided between the valve seat 54 and the valve cartridge 51. For example, the outer diameter of one end of the valve seat 54 is smaller than or equal to the inner diameter of the end of the valve cylinder 51 near the steerer tube 3, the end of the valve seat 54 is inserted into the end of the valve cylinder 51, and the two are threadedly connected. The valve cylinder 51 is further provided with a limiting part 511 at one end away from the valve seat 54. The stopper 511 is provided on the inner wall of the valve cylinder 51. The stopper 511 may be ring-shaped. The inner diameter of the stopper 511 is smaller than the inner diameter of the valve cylinder 51 at the end close to the valve seat 54.
The valve element 52 is disposed in the valve cylinder 51 between the stopper 511 and the valve seat 54. The spool 52 includes a spool 521, a ball 522, and a connecting tube 523. The outer peripheral wall of the spool 521 abuts against the inner peripheral wall of the valve cylinder 51, and the spool 521 is slidable in the axial direction of the valve cylinder 51. The outer diameter of the spool 521 is larger than the inner diameter of the stopper 511. The ball head 522 is constructed in a hemispherical shape. The radius of the ball 522 is greater than the radius of the inner bore of the valve seat 54. Ball head 522 is located between spool 521 and valve seat 54. The connecting cylinder 523 has a cylindrical shape. One end of the connecting tube 523 is connected to one end of the sliding tube 521 facing the ball head 522, and the other end of the connecting tube 523 is connected to the ball head 522. The connecting cylinder 523, the sliding cylinder 521 and the ball head 522 are coaxially arranged. The diameter of the connecting cylinder 523 near the ball head 522 is smaller than the diameter of the connecting cylinder 523 near the sliding cylinder 521. A fifth through hole 524 is formed at an end of the connecting cylinder 523 adjacent to the sliding cylinder 521. The fifth through hole 524 penetrates the pipe wall of the spool 521. The connecting cylinder 523 is provided with a fifth through hole 524. The spherical surface of the ball 522 faces the valve seat 54. When the ball 522 abuts against the valve seat 54, the ball 522 can seal the inner hole of the valve seat 54.
The resilient member 51 is disposed on a side of the slide cylinder 521 facing away from the ball head 522. The elastic member 51 may be a coil spring. The outer diameter of the elastic member 51 may be slightly smaller than the inner diameter of the valve cylinder 51. The elastic member 51 is disposed inside the valve cylinder 51 between the spool 521 and the stopper 511. One end of the elastic element 51 abuts against one end of the slide cylinder 521 away from the valve seat 54, and the other end of the elastic element 51 abuts against one side of the limiting portion 511 facing the slide cylinder 521. The elastic member 51 is in a compressed state, and the elastic member 51 applies an elastic force to the sliding barrel 521 close to the valve seat 54, so that the ball head 522 abuts against the valve seat 54 and is tightly pressed on the valve seat 54.
When the fluid flows from the second through hole 35 of the steering tube 3 to the third through hole 34 of the third tube 4, the hydraulic pressure of the fluid can push the ball 522 to the side close to the elastic member 51, so that the ball 522 is away from the valve seat 54, and at this time, the check valve 5 is opened, and the fluid can flow from the second through hole 35 of the steering tube 3 to the third through hole 34 of the third tube 4. When the fluid enters the second passage 41 of the third pipe 4 from the third through hole 34, the ball 522 is blocked on the valve seat 54, and at this time, the check valve 5 is closed, the fluid cannot pass through the check valve 5, and the fluid cannot flow from the third through hole 34 of the third pipe 4 to the second through hole 35 of the steering pipe 3. Therefore, the check valve 5 can pass only the fluid flowing from the second through hole 35 of the steering pipe 3 to the third through hole 34 of the third pipe body 4.
In this embodiment, the first passage 21 in the second pipe body 2, the main passage 31 of the steering pipe 3, and the first through hole 34 of the steering pipe 3 are communicated in this order, and the annular passage 10 between the first pipe body 1 and the second pipe body 2, the second through hole 35 of the steering pipe 3, and the second passage 41 of the third pipe body 4 are communicated in this order.
The sand control operation of gravel packing by adopting the packing sand control tool comprises a positive circulation packing operation stage and a reverse circulation well washing operation stage.
As shown in fig. 6, in the positive circulation packing operation stage, the packing sand control tool is lowered downhole so that the first through hole 34 of the steering pipe 3 is positioned at the oil layer to be constructed, then the sand-carrying fluid is injected into the first passage 21 of the second pipe body 2, enters the main passage 31 of the steering pipe 3 along the first passage 21, and then is discharged out of the steering pipe 3 through the first through hole 34 of the steering pipe 3, so that gravel in the sand-carrying fluid is packed into the wellbore, thereby forming a gravel packing layer in the annular space between the packing sand control tool and the wellbore.
As shown in fig. 7, in the reverse circulation well-flushing operation stage, the well-flushing fluid is injected into the annular channel 10 between the first pipe 1 and the second pipe 2, and the well-flushing fluid enters from the annular channel into the second through hole 35 of the steering pipe 3 and then flows into the second channel 41 of the third pipe 4 through the second through hole 35, at which time the check valve 5 is opened, and the well-flushing fluid in the second channel 41 can be conveyed out of the third pipe 4 through the third through hole 34, so that the well-flushing fluid enters into the annular space between the sand control tool and the wellbore. The flushing fluid then flows along the annular space into the first through-opening 34 of the diverting tube 3, during which the flushing fluid flushes the gravel pack in the annular space, which carries excess gravel together into the first through-opening 34. The washing liquid carrying gravel sequentially passes through the first through hole 34 of the steering pipe 3 and the main channel 31 to enter the first channel 21 of the second pipe body 2, at the moment, the second pipe body 2 is communicated with the ground through an oil pipe, and the washing liquid in the second pipe body 2 can return to the ground through the oil pipe, so that redundant gravel in the gravel packing layer is brought to the ground. Therefore, the well washing efficiency is high when the filling sand control tool is used for reverse circulation well washing operation, redundant gravel can be fully brought to the ground, and the risk of sand blocking is remarkably reduced.
In an exemplary embodiment, as shown in fig. 3, the steering tube 3 is further provided with a limiting protrusion 36. The stop boss 36 may be an annular boss. The limit projection 36 is provided on the inner wall of the steering tube 3. The stopper projection 36 projects radially inward from the side wall of the main passage 31 of the steerer tube 3. The limiting bulge 36 is coaxially arranged with the steering tube 3. The limiting protrusion 36 is located on one side of the first through hole 34 close to the first end portion 32 and close to the first end portion 32.
The sand control packing tool also includes a sleeve 6. The sleeve 6 is in the shape of a straight cylinder. The sleeve 6 is arranged inside the steering tube 3. The sleeve 6 is arranged between the stopper 7 and the limit projection 36. The opposite ends of the sleeve 6 are respectively abutted against the plug 7 and the limiting bulge 36. The outer peripheral wall of the sleeve 6 abuts against the inner peripheral wall of the steering tube 3. The sleeve 6 is also provided with a plurality of sets of through holes. Each group of through holes comprises a plurality of fourth through holes 61. The fourth through hole 61 radially penetrates the sidewall of the sleeve 6. The fourth through hole 61 may be a circular hole. The fourth through holes 61 in the same through hole group are arranged in order in the axial direction.
The steering tube 3 is provided with a plurality of first through holes 34. The plurality of first through holes 34 are evenly distributed around the circumference of the steering tube 3. The first through hole 34 may be a straight-bar-shaped hole, and the first through hole 34 extends in the axial direction of the steerer tube 3. The width of the first through hole 34 is larger than the diameter of the fourth through hole 61. The number of the first through holes 34 of the steering tube 3 is equal to the number of the through hole groups of the sleeve 6, and the first through holes 34 are arranged in one-to-one correspondence with the through hole groups. All the fourth through holes 61 in the through hole group communicate with the first through holes 34 corresponding to the through hole group.
Thus, in the positive circulation filling operation stage, the sand-carrying fluid passes through the fourth through hole 61 with the smaller cross-sectional area and then passes through the first through hole 34 with the larger cross-sectional area, so that the sand-carrying fluid mainly wears the fourth through hole 61, and the wear on the first through hole 34 is very small. Therefore, when the wear of the fourth through hole 61 of the sleeve 6 is excessive, only the sleeve 6 needs to be replaced, and the cost for replacing the sleeve 6 is lower than that for replacing the steering tube 3. And because the plug 7 is detachably connected with the steering tube 3, the sleeve 6 in the steering tube 3 can be replaced only by detaching the plug 7 from the steering tube 3, and the sleeve 6 is very convenient to replace.
In an exemplary embodiment, a sealing ring is disposed at a joint of two adjacent pipe fittings, and the sealing ring is used for sealing a gap between the two adjacent pipe fittings. The seal ring may be an O-ring seal. The sealing ring can strengthen the sealing between the pipe fittings and prevent leakage.
In an exemplary embodiment, the third through hole 34 of the third tube 4 is provided in plural. The plurality of third through holes 34 are evenly distributed in the circumferential direction of the third pipe body 4. In the reverse circulation well washing operation stage, the well washing liquid can be sprayed out from the third through holes 34 at the same time, and the gravel packing layer is washed more thoroughly.
The present application describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive concept as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
Claims (10)
1. A packed sand control tool, comprising:
a steerer tube comprising a first end, a second end opposite the first end, a main passage extending from the first end to the second end, a first throughbore between the first and second ends extending radially outward from the main passage, and a second throughbore disposed within the tube wall and extending axially through the steerer tube;
one end of the first pipe body is sleeved on the first end part;
the second pipe body is arranged in the first pipe body, the first end part is sleeved on one end of the second pipe body, a first channel communicated with the main channel of the steering pipe is arranged in the second pipe body, and an annular channel communicated with one end of the second through hole is formed between the second pipe body and the first pipe body;
the third pipe body is sleeved on the second end part, a second channel and a third through hole which radially and outwards extends from the second channel are arranged in the third pipe body, and the second channel is communicated with the other end of the second through hole;
the one-way valve is arranged in the second channel and is positioned on one side, close to the steering pipe, of the third through hole;
a plug blocking a portion of the main channel within the second end;
wherein the one-way valve is only passable through fluid flowing from the second through-hole to the third through-hole.
2. The packed sand control tool of claim 1,
the filling sand control tool also comprises a sleeve, wherein a through hole group is arranged on the sleeve, the through hole group comprises a plurality of fourth through holes, and the cross sectional area of each fourth through hole is smaller than that of the first through hole;
the sleeve sets up in the main entrance and with the coaxial setting of main entrance, telescopic periphery wall butt in the inner wall of main entrance, a plurality of in a set of through-hole group the fourth through-hole all communicates in one first through-hole.
3. The packed sand control tool of claim 2,
the steering tube is also provided with a limiting bulge, the limiting bulge radially extends inwards from the side wall of the main channel, and the limiting bulge is arranged close to the first end part;
one end of the sleeve abuts against the limiting bulge, and the other end of the sleeve abuts against the plug;
the plug is detachably connected with the steering tube.
4. The packed sand control tool of claim 2,
the first through holes are arranged in a plurality and are uniformly distributed in the circumferential direction of the steering tube;
the number of the through hole groups is the same as that of the first through holes, and the through hole groups are distributed and arranged in one-to-one correspondence with the first through holes;
all fourth through holes in each through hole group are communicated with the first through holes corresponding to the through hole group.
5. The packed sand control tool of claim 2,
the first through holes are straight strip-shaped holes, and a plurality of fourth through holes in the through hole group are sequentially arranged along the axial direction of the sleeve.
6. The packed sand control tool of claim 1,
the third pipe body is also internally provided with a mounting part, the mounting part is of a cylindrical structure coaxial with the second channel, and the mounting part extends inwards from the inner wall of the second channel in the radial direction;
the one-way valve comprises
One end of the valve cylinder is inserted into the inner hole of the mounting part and is in threaded connection with the mounting part;
a valve seat configured in a cylindrical shape disposed coaxially with the valve cylinder, disposed at the other end of the valve cylinder, the valve seat having an inner diameter smaller than that of the valve cylinder;
the valve core comprises a sliding barrel which is arranged in the valve barrel and is coaxial with the valve barrel, a ball head which is arranged in the valve barrel and is positioned on one side of the sliding barrel, which is close to the valve seat, and a connecting barrel which is used for connecting the ball head and the valve barrel;
the elastic piece is used for applying elastic force close to the valve seat to the valve core;
the sliding cylinder can slide along the axial direction of the valve cylinder, the ball head seals an inner hole of the valve seat when abutting against the valve seat, and a fifth through hole penetrating through the side wall of the connecting cylinder is formed in the connecting cylinder.
7. The packing sand control tool of claim 6, wherein a limiting part is further arranged at one end of the valve cylinder, which is far away from the valve seat, and the limiting part is arranged on the inner wall of the valve cylinder;
the elastic piece is arranged in the valve cylinder, two opposite ends of the elastic piece are respectively abutted against the limiting part and the sliding cylinder, and the elastic piece is in a compressed state.
8. The packed sand control tool of claim 7 wherein the resilient member is a coil spring.
9. The packing sand control tool of claim 1 wherein the steerer tube, the first tube, the second tube, and the third tube are straight tubes and are coaxially disposed.
10. The packing sand control tool of claim 1 wherein the third pipe body has a plurality of third through holes, the plurality of third through holes being evenly distributed around the third pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176405.0A CN112901123A (en) | 2021-02-07 | 2021-02-07 | Filling sand prevention tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110176405.0A CN112901123A (en) | 2021-02-07 | 2021-02-07 | Filling sand prevention tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901123A true CN112901123A (en) | 2021-06-04 |
Family
ID=76122922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110176405.0A Pending CN112901123A (en) | 2021-02-07 | 2021-02-07 | Filling sand prevention tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901123A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756816Y (en) * | 2004-12-17 | 2006-02-08 | 王仁前 | Sand-proof pipe external gravel filling sand-proof well-flushing compensator |
| CN101832121A (en) * | 2010-05-24 | 2010-09-15 | 大港油田集团有限责任公司 | Horizontal well circulating gravel packing sand retention device |
| CN104879099A (en) * | 2015-04-28 | 2015-09-02 | 中国海洋石油总公司 | Gravel packing pipe column and gravel packing method |
| CN110107251A (en) * | 2019-04-30 | 2019-08-09 | 中国海洋石油集团有限公司 | A kind of frac-pack crossover tool |
| CN209494549U (en) * | 2019-01-05 | 2019-10-15 | 中国海洋石油集团有限公司 | A kind of filling steerable tool |
-
2021
- 2021-02-07 CN CN202110176405.0A patent/CN112901123A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756816Y (en) * | 2004-12-17 | 2006-02-08 | 王仁前 | Sand-proof pipe external gravel filling sand-proof well-flushing compensator |
| CN101832121A (en) * | 2010-05-24 | 2010-09-15 | 大港油田集团有限责任公司 | Horizontal well circulating gravel packing sand retention device |
| CN104879099A (en) * | 2015-04-28 | 2015-09-02 | 中国海洋石油总公司 | Gravel packing pipe column and gravel packing method |
| CN209494549U (en) * | 2019-01-05 | 2019-10-15 | 中国海洋石油集团有限公司 | A kind of filling steerable tool |
| CN110107251A (en) * | 2019-04-30 | 2019-08-09 | 中国海洋石油集团有限公司 | A kind of frac-pack crossover tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104818960B (en) | The double float traps of blowout prevention in double-wall drill pipe | |
| CN103429843B (en) | There is the flow control screen pipe assembly of reverse flow control ability | |
| CN110107251B (en) | Fracturing filling conversion tool | |
| CN1934333B (en) | Method of injecting lift gas into a production tubing of an oil well and gas lift flow control device for use in the mehtod | |
| RU2679208C2 (en) | Drill rod for percussion drill tool | |
| CN204532262U (en) | Downhole multi-stage flow control valve | |
| RU2744850C2 (en) | Intrawell overlapping unit | |
| CN106321010B (en) | Integrated packer | |
| US8066071B2 (en) | Diverter valve | |
| CN112901123A (en) | Filling sand prevention tool | |
| GB2606894A (en) | Completion systems and methods to perform completion operations | |
| CN112943157B (en) | Ball-throwing type leaking stoppage bypass valve for well drilling | |
| CN210714598U (en) | Differential pressure sliding sleeve and water injection string | |
| CN108798595B (en) | Stepless opening valve for remotely controlling output of each oil layer and use method thereof | |
| US6105670A (en) | Injection/isolation tool | |
| CN204552722U (en) | Oil jacket is with noting control valve | |
| US11773688B2 (en) | Downhole packer apparatus | |
| CN111379536B (en) | Packer (CN) | |
| CN210714550U (en) | Expansion pipe subsidy top tie-back intubate and sealing device | |
| CN203547658U (en) | Isolating valve | |
| CN209855750U (en) | Chemical agent injection valve | |
| CN114837583B (en) | Well-flushing tool and water injection pipe column | |
| CN104265233A (en) | Membrane expansion type packer | |
| CN114439417B (en) | Hydraulic control rubber cylinder type bidirectional well flushing valve and method | |
| CN219974456U (en) | Interlayer sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |