CN114876402A - Well cementation device and well cementation method - Google Patents
Well cementation device and well cementation method Download PDFInfo
- Publication number
- CN114876402A CN114876402A CN202210457477.7A CN202210457477A CN114876402A CN 114876402 A CN114876402 A CN 114876402A CN 202210457477 A CN202210457477 A CN 202210457477A CN 114876402 A CN114876402 A CN 114876402A
- Authority
- CN
- China
- Prior art keywords
- casing
- connecting pipe
- well cementation
- wall
- central connecting
- 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
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 45
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 18
- 238000007569 slipcasting Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004058 oil shale Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a well cementation device and a well cementation method, wherein the well cementation device comprises a non-return device and a grouting device, a separation device is arranged at the upper part of the non-return device, the grouting device is arranged at the upper part of the separation device, the separation device comprises an I-shaped base, a liquid flow channel is axially arranged on the I-shaped base, the upper end of the liquid flow channel is communicated with the grouting device through a central connecting pipe, and an expandable separation assembly is arranged in the middle of the I-shaped base. The well cementation method is a method for cementing wells by using the well cementation device, and can avoid the damage of cement slurry to a pipe hoop connected with heating equipment in the well cementation process, ensure the normal use of subsequent heating equipment and reduce the well cementation operation cost.
Description
Technical Field
The invention belongs to the technical field of well cementation, and particularly relates to a well cementation device and a well cementation method.
Background
Cementing is an important means of maintaining the well wall stable. By putting the well cementing device into the well, the cement slurry is filled in the gap between the casing and the well wall, so that the problem of the stability of the hole wall of an unstable stratum can be effectively solved. In the process of developing unconventional energy sources such as oil-rich coal, oil shale and the like, a pipe hoop connected with heating equipment is usually required to be arranged on a casing section, and the inner diameter of the pipe hoop is smaller than that of the casing. The traditional well cementation method requires the inner diameter of the casing to be consistent, which conflicts with the requirement of unconventional energy development on the casing. If the traditional well cementation method is adopted, the well cementation quality cannot be guaranteed, and a pipe hoop connected with heating equipment is damaged in the well cementation process, so that the requirement for connection with the heating equipment cannot be met.
Disclosure of Invention
The invention aims to provide a well cementation device and a well cementation method, which overcome the defects of the prior art.
In order to achieve the purpose, in a first aspect, the invention provides a well cementation device which comprises a non-return device and a grouting device, wherein a separation device is arranged at the upper part of the non-return device, the grouting device is arranged at the upper part of the separation device, the separation device comprises an I-shaped base, a liquid flow channel is axially arranged on the I-shaped base, the upper end of the liquid flow channel is communicated with the grouting device through a central connecting pipe, and an expandable separation assembly is arranged in the middle of the I-shaped base.
Further, the separation assembly comprises a rubber sleeve, the rubber sleeve is arranged in the middle of the I-shaped base, a distributing hole is formed in the side wall of the middle of the I-shaped base, and the inside of the rubber sleeve is communicated with the liquid flow channel through the distributing hole.
Further, the I-shaped base includes the center stay tube, the flow distribution hole set up in the middle part of center stay tube, center stay tube upper portion cover is equipped with the supporting bench, the lower part of center stay tube is equipped with the undersetting platform, the top of gum cover inner wall with go up the contact of supporting bench top, the bottom of gum cover inner wall with the bottom contact of undersetting platform, the upper end threaded connection of center stay tube has last locking head, go up locking head with be provided with the preforming between the gum cover, the lower extreme threaded connection of center stay tube has locking head down, down locking head with be provided with the preforming down between the gum cover, the gum cover seals fixedly through last preforming and the pressure that the preforming was applyed down.
Further, the non-return device includes non-return casing, non-return casing downside is equipped with the opening, non-return casing is equipped with supporting seat and under bracing seat, it sets up flutedly to go up the supporting seat, the below of recess is provided with the spheroid, the spheroid downside with be equipped with the spring between the under bracing seat, spheroidal upside butt in the recess lower part, the under bracing seat is equipped with a plurality of circulation holes.
Further, the grouting device includes the slip casting casing, slip casting casing lower part lateral wall is equipped with the cement thick liquid mouth, the lateral wall on slip casting casing upper portion is equipped with the high-pressure air filling opening, the inner wall at slip casting casing middle part is equipped with the spacing platform of annular, and the below of going up the spacing platform of annular is equipped with the plug, the plug lateral wall with the laminating of slip casting casing inner wall, slip casting casing lower extreme with central connecting pipe connects, the lower part of flow channel inner wall is equipped with down the spacing platform of annular.
Furthermore, the side wall of the rubber plug is provided with a multi-stage skirt.
Furthermore, the upper side of the upper supporting table and the lower side of the lower supporting table are provided with a multi-stage sealing table.
Furthermore, a plurality of discharge holes are formed in the side wall of the non-return shell, and the discharge holes are located between the upper supporting seat and the lower supporting seat.
Further, center connecting pipe lateral wall is equipped with one-level locator and second grade locator, the one-level locator includes the holding ring, the holding ring cup joints with center connecting pipe, holding ring week side-connection has a plurality of locating levers, the locating lever other end is connected with the locating wheel. Specifically, the locating wheel is made of metal materials, so that the locating wheel can be prevented from deforming, and the locating effect is ensured. Furthermore, the positioning rod is connected with the positioning ring through threads, and the positioning rod can adapt to different inner diameters of the sleeve by adjusting the threaded connection length of the positioning rod and the positioning ring.
Furthermore, the primary positioner and the secondary positioner have the same structure. Furthermore, the quantity of locating levers is four in one-level locator and the second grade locator, and on the plane, the contained angle of two adjacent locating lever central lines of one-level locator and second grade locator is 45 to improve the location effect. The first-stage positioner and the second-stage positioner can ensure that the separating device is not contacted with a pipe hoop connected with heating equipment in the casing running process, and ensure that the heater can be normally run in follow-up processes.
In a second aspect, the invention also provides a method for cementing wells by using the cementing device, which comprises the following steps:
s1: the non-return device is assembled on the ground, and then the non-return device, the second sleeve, the pipe hoop connected with the heating equipment and the first sleeve are sequentially connected and are put into the completed well;
s2: assembling the separating device and the central connecting pipe on the ground, and then putting the separating device into the second sleeve to enable the lower part of the separating device to be in contact with the upper surface of the non-return device;
s3: after the grouting device is assembled, the grouting device is connected with the upper end of the central connecting pipe, after the grouting device is connected with the upper end of the central connecting pipe and is placed at a designated position, well cementation cement is injected into the central connecting pipe from a cement paste port, the separation assembly expands after the well cementation cement is injected, the side wall of the expanded separation assembly is attached to the inner wall of the second casing pipe, the second casing pipe is separated into an upper part and a lower part, and cement paste is prevented from entering the upper part of the second casing pipe;
s4: after a certain amount of cement slurry returns to the annular space of the casing and the well wall, stopping injecting the well cementation cement, applying pressure to the inside of the central connecting pipe from the high-pressure air injection port, and pressing the cement slurry in the central connecting pipe into the outside of the second casing;
s5: and (4) discharging the high-pressure gas in the central connecting pipe, and lifting the separating device to the ground to finish the well cementation operation.
The invention has the advantages that: the invention provides the well cementation device, the device can not conflict with a pipe hoop connected with a casing and heating equipment, the arranged separation component can separate the casing into an upper part and a lower part, the stability between the well cementation device and the casing is improved, the damage of cement slurry to the pipe hoop connected with the heating equipment is avoided, the normal use of subsequent heating equipment is ensured, the well cementation device is suitable for casings with different inner diameters, the applicability is strong, the grouting device and the separation device can be repeatedly used after being cleaned, and the practicability is strong; the well cementation method provided by the invention can avoid the damage of cement slurry to the pipe hoop connected with the heating equipment in the well cementation process, ensure the normal use of the subsequent heating equipment and reduce the operation cost.
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the partitioning device of the present invention.
Fig. 3 is a schematic view of the construction of the no-return device of the present invention.
Fig. 4 is a schematic structural view of the grouting device of the invention.
FIG. 5 is a schematic view of the check device, sleeve one, sleeve two and ferrule after assembly.
Fig. 6 is a schematic view of the present invention in a grouting state.
Fig. 7 is a schematic view of the present invention in use with pressure applied to the plug.
FIG. 8 is a schematic view of the spacer being removed after completion of cementing.
Fig. 9 is a schematic view of a primary locator.
FIG. 10 is a schematic diagram of the structure of the primary and secondary positioners.
Description of reference numerals: 1. a non-return device; 101. a non-return housing; 102. an upper support base; 103. a lower support seat; 105. a sphere; 106. a spring; 104. a flow-through hole; 2. a grouting device; 201. grouting the shell; 202. a cement paste port; 203. a high pressure air injection port; 204. an upper annular limiting table; 205. a rubber plug; 206. a lower annular limiting table; 3. a partitioning means; 301. an I-shaped base; 3011. a central support tube; 3012. an upper support table; 3013. a lower support table; 3014. an upper locking head; 3015. pressing the mixture into tablets; 3016. a lower locking head; 3017. pressing the mixture downwards; 302. a flow channel; 303. a partition assembly; 3031. a rubber sleeve; 3032. a flow distribution hole; 4. a vent hole; 5. a second sleeve; 6. a pipe hoop; 7. a first sleeve; 8. a central connecting pipe; 9. a primary locator; 901. a positioning ring; 902. positioning a rod; 903. positioning wheels; 10. and a secondary positioner.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
The embodiment provides a well cementation device as shown in fig. 1 to 10, the well cementation device comprises a non-return device 1 and a grouting device 2, a separation device 3 is arranged at the upper part of the non-return device 1, the grouting device 2 is arranged at the upper part of the separation device 3, the separation device 3 comprises an I-shaped base 301, a liquid flow channel 302 is axially arranged on the I-shaped base 301, the liquid flow channel 302 is used for circulating cement slurry, the upper end of the liquid flow channel 302 is communicated with the grouting device 2 through a central connecting pipe 8, specifically, the upper end of the central connecting pipe 8 is provided with an internal thread, and the lower end of the central connecting pipe 8 is provided with an external thread which is used for being connected with the liquid flow channel 302 and the grouting device 2; the expandable partition assembly 303 is arranged in the middle of the I-shaped base 301, and in the construction process, the arranged partition assembly 303 can separate the second casing 5, so that damage to the pipe hoop 6 connected with the heating equipment by cement paste can be avoided, normal use of subsequent heating equipment is guaranteed, and the operation cost is reduced. And when using, the lateral wall of separating subassembly 303 and the inseparable laminating of second 5 inner walls of sleeve pipe, avoided the well cementation device to appear rocking when using, improved the stability of well cementation device.
Further, as shown in fig. 2 and 6, the separating assembly 303 includes a rubber sleeve 3031, the rubber sleeve 3031 is sleeved in the middle of the i-shaped base 301, a flow distribution hole 3032 is formed in a side wall of the middle of the i-shaped base 301, the flow distribution hole 3032 communicates the inside of the rubber sleeve 3031 with the flow channel 302, after cement slurry is injected into the flow channel 302, the cement slurry enters the rubber sleeve 3031 from the flow distribution hole 3032, and the rubber sleeve 3031 is separated under the pressure of the cement slurry, so that an outer wall of the rubber sleeve 3031 is tightly attached to an inner wall of the second casing 5, thereby playing a separating role.
Further, as shown in fig. 2, the i-shaped base 301 includes a central support tube 3011, a distribution hole 3032 is disposed in the middle of the central support tube 3011, an upper support table 3012 is sleeved on the upper portion of the central support tube 3011, specifically, the central support tube 3011 and the upper support table 3012 may be fixedly connected or rotatably connected, more specifically, the central support tube 3011 and the upper support table 3012 are fixed by welding, a lower support table 3013 is disposed on the lower portion of the central support tube 3011, specifically, the central support tube 3011 and the lower support table 3013 may be fixedly connected or rotatably connected, more specifically, the central support tube 3011 and the lower support table 3013 are fixed by welding, the top of the inner wall of the rubber sleeve 3031 contacts with the top of the upper support table 3012, the bottom of the inner wall of the rubber sleeve 3031 contacts with the bottom of the lower support table 3013, the upper end of the central support tube 3011 is threadedly connected with an upper locking head 3014, specifically, an inner wall of an upper portion of the upper locking head 3014 is provided with an internal thread for connecting with a central connecting pipe 8, an upper pressing piece 3015 is arranged between the upper locking head 3014 and the rubber sleeve 3031, a lower locking head 3016 is connected to a lower end of the central supporting pipe 3011 through a thread, a lower pressing piece 3017 is arranged between the lower locking head 3016 and the rubber sleeve 3031, the upper pressing piece 3015 and the lower pressing piece 3017 are pressed after the upper locking head 3014 and the lower locking head 3016 are screwed, and the rubber sleeve 3031 is sealed and fixed through the pressure applied by the upper pressing piece 3015 and the lower pressing piece 3017.
Further, as shown in fig. 3 and fig. 6, the non-return device 1 includes a non-return housing 101, an opening is provided at the lower side of the non-return housing 101, the opening is used for the circulation of cement slurry, the non-return housing 101 is provided with an upper support 102 and a lower support 103, specifically, the non-return housing 101 is fixedly connected with the upper support 102 and the lower support 103, the upper support 102 is provided with a groove, a ball 105 is provided below the groove, a spring 106 is provided between the lower side of the ball 105 and the lower support 103, the spring 106 provides an upward elastic force to the ball 105, so that the upper side of the ball 105 is abutted against the lower part of the groove, the lower support 103 is provided with a plurality of circulation holes 104, when grouting is performed, the ball 105 is pressed downward to move downward, so that cement slurry enters from the groove of the upper support 102 and flows to the outside of the non-return device 1 from the circulation holes 104 and the opening at the lower side of the non-return housing 101, when grouting is not performed, the upper part of the sphere 105 is attached to the lower part of the groove by the elasticity of the spring 106 of the sphere 105, so that cement paste outside the non-return device 1 can be prevented from entering the sleeve, and the non-return function is achieved.
Further, as shown in fig. 1 and 4, the grouting device 2 includes a grouting housing 201, a cement port 202 is disposed on a sidewall of a lower portion of the grouting housing 201, a high pressure air injection port 203 is disposed on a sidewall of an upper portion of the grouting housing 201, an upper annular limiting platform 204 is disposed on an inner wall of a middle portion of the grouting housing 201, a rubber plug 205 is disposed below the upper annular limiting platform 204, a sidewall of the rubber plug 205 is attached to an inner wall of the grouting housing 201, specifically, a sidewall of the rubber plug 205 is provided with a multi-stage skirt for separating cement slurry and high pressure air, a lower end of the grouting housing 201 is connected to the central connection pipe 8, specifically, an external thread adapted to an internal thread of an end portion of the central connection pipe 8 is disposed at a lower end of the grouting housing 201, so that the grouting housing 201 is connected to the central connection pipe 8 by a thread for assembly, a lower annular limiting platform 206 is disposed at a lower portion of an inner wall of the flow channel 302, specifically, the lower annular limiting platform 206 is disposed at an inner wall of a lower locking head 3016, the lower annular stop 206 serves to limit the axial displacement of the plug 205.
As shown in FIG. 6, during grouting, the rubber plug 205 is located above the cement port 202, and after a certain amount of cement slurry returns from the annulus between the casing and the well wall, the injection of the cementing cement is stopped. As shown in fig. 7, high-pressure air is injected from the high-pressure air injection port 203 to press the rubber plug 205 to the lower locking head lower annular limit table 206, so that the cement paste in the central connecting pipe 8 is pressed out of the second casing pipe 5. After the rubber plug 205 contacts the lower annular limiting table 206 of the lower lock head, air in the central connecting pipe 8 is discharged, the separating device 3 is lifted to the ground, the separating device 3 is cleaned, and then the separating device can be repeatedly used.
Further, as shown in fig. 2, a multi-stage sealing table is disposed on the upper side of the upper support table 3012 and the lower side of the lower support table 3013, and when the upper pressing sheet 3015 and the lower pressing sheet 3017 press the rubber sleeve 3031, the rubber sleeve 3031 is pressed into the upper multi-stage sealing table to seal the connection between the rubber sleeve 3031 and the upper support table 3012 and the connection between the rubber sleeve 3033 and the lower support table 3013.
Further, as shown in fig. 3, a plurality of drain holes 4 are formed in the side wall of the check housing 101, the drain holes 4 are located between the upper support seat 102 and the lower support seat 103, and the drain holes 4 can quickly drain out cement slurry between the upper support seat 102 and the lower support seat 103.
Further, as shown in fig. 9 and 10, 8 lateral walls of center connecting pipe are equipped with one-level locator 9 and second grade locator 10, one-level locator 9 includes holding ring 901, holding ring 901 cup joints with center connecting pipe 8, holding ring 901 week side is connected with a plurality of locating levers 902, the locating lever 902 other end is connected with locating wheel 903, locating wheel 903 can rotate round self axis, during the use, locating wheel 903 centers on center connecting pipe 8 with the laminating of intraductal wall of sleeve, prevents to rock. Specifically, the positioning wheel 903 is made of metal, so that the positioning wheel 903 can be prevented from deforming, and the positioning effect is ensured. Furthermore, the positioning rod 902 is connected with the positioning ring 901 through threads, and the positioning rod 902 is ensured to be suitable for different inner diameters of sleeves by adjusting the threaded connection length of the positioning rod 902 and the positioning ring 901.
Further, as shown in fig. 9 and 10, the primary retainer 9 is identical in structure to the secondary retainer 10. Further, the quantity of locating lever 902 is four and evenly distributed in one-level locator 9 and second grade locator 10, and on the plane, the contained angle of two adjacent locating levers 902 central lines of one-level locator 9 and second grade locator 10 is 45 to improve the location effect. The primary locator 9 and the secondary locator 10 can ensure that the separating device 3 is not contacted with the pipe hoop 6 connected with the heating equipment in the casing running process, and ensure that the heater can be normally run in subsequently.
Example 2
The method for cementing the well by using the well cementing device comprises the following steps:
s1: as shown in fig. 5, the non-return device 1 is assembled on the ground, and then the non-return device 1, the second casing pipe 5, the pipe hoop 6 connected with the heating equipment and the first casing pipe 7 are connected in sequence and are put into the completed well;
s2: as shown in fig. 1, the spacer 3 is completely assembled with the center connection pipe 8 at the surface, and then the spacer 3 is lowered into the second sleeve 5 so that the lower portion of the spacer 3 is in contact with the upper surface of the check device 1, so that the flow channel 302 is positioned right above the groove;
s3: as shown in fig. 6, the grouting device 2 is assembled, then is connected with the upper end of the central connecting pipe 8, after the connection is completed and the specified position is set, well cementation cement is injected into the central connecting pipe 8 from the cement slurry port 202, after the well cementation cement is injected, the well cementation cement enters the separation component 303 through the distributing hole 3032, so that the separation component 303 expands, the side wall of the expanded separation component 303 is attached to the inner wall of the second casing 5, the second casing 5 is separated into an upper part and a lower part, and cement slurry is prevented from entering the upper part of the second casing 5;
s4: as shown in fig. 7, after a certain amount of cement slurry returns to the annulus between the casing and the well wall, the injection of the well cementation cement is stopped, and high-pressure air is injected from the high-pressure air injection port 203 (the pressure can push the rubber plug 205 to move downwards), so that the rubber plug 205 is pressed to the lower locking head annular limiting table 206 (i.e. the pressure is applied to the central connecting pipe 8), and the cement slurry in the central connecting pipe 8 is pressed into the outside of the casing II 5;
s5: as shown in fig. 7 and 8, the high-pressure gas in the center connection pipe 8 is discharged, and the spacer 3 is lifted to the ground to complete the cementing operation.
In conclusion, the well cementation method can avoid the damage of cement slurry to the pipe hoop 6 connected with the heating equipment in the well cementation process, ensure the normal use of the subsequent heating equipment and reduce the operation cost.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A well cementation device comprises a check device (1) and a grouting device (2), and is characterized in that: non return device (1) upper portion is provided with separator (3), slip casting device (2) set up in separator (3) upper portion, separator (3) include I-shaped base (301), the axial of I-shaped base (301) is provided with flow channel (302), flow channel (302) upper end with slip casting device (2) is through central connecting pipe (8) intercommunication, the middle part of I-shaped base (301) is equipped with expandable partition subassembly (303).
2. The well cementing apparatus of claim 1, wherein: the separation component (303) comprises a rubber sleeve (3031), the rubber sleeve (3031) is sleeved in the middle of the I-shaped base (301), a distributing hole (3032) is formed in the side wall of the middle of the I-shaped base (301), and the inner part of the rubber sleeve (3031) is communicated with the liquid flow channel (302) through the distributing hole (3032).
3. A cementing apparatus according to claim 2, wherein: the I-shaped base (301) comprises a central supporting tube (3011), the distributing hole (3032) is arranged in the middle of the central supporting tube (3011), an upper supporting table (3012) is sleeved on the upper portion of the central supporting tube (3011), a lower supporting table (3013) is arranged on the lower portion of the central supporting tube (3011), the top of the inner wall of the rubber sleeve (3031) is in contact with the top of the upper supporting table (3012), the bottom of the inner wall of the rubber sleeve (3031) is in contact with the bottom of the lower supporting table (3013), an upper locking head (3014) is in threaded connection with the upper end of the central supporting tube (3011), an upper pressing sheet (3015) is arranged between the upper locking head (3014) and the rubber sleeve (3031), a lower locking head (3016) is in threaded connection with the lower end of the central supporting tube (3011), a lower pressing sheet (3017) is arranged between the lower locking head (3016) and the rubber sleeve (3031), the rubber sleeve (3031) is sealed and fixed by the pressure exerted by the upper pressing sheet (3015) and the lower pressing sheet (3017).
4. A cementing apparatus according to claim 1, wherein: non return device (1) is including non return casing (101), non return casing (101) downside is equipped with the opening, non return casing (101) are equipped with supporting seat (102) and bottom suspension seat (103), go up supporting seat (102) and set up flutedly, the below of recess is provided with spheroid (105), spheroid (105) downside with be equipped with spring (106) between bottom suspension seat (103), the upside butt of spheroid (105) in the recess lower part, bottom suspension seat (103) are equipped with a plurality of circulation holes (104).
5. A cementing apparatus according to claim 1 or 2, wherein: grouting device (2) are including slip casting casing (201), slip casting casing (201) lower part lateral wall is equipped with cement paste mouth (202), the lateral wall on slip casting casing (201) upper portion is equipped with highly-compressed air filling opening (203), the inner wall at slip casting casing (201) middle part is equipped with spacing platform of annular (204), and the below of going up spacing platform of annular (204) is equipped with plug (205), plug (205) lateral wall with the laminating of slip casting casing (201) inner wall, slip casting casing (201) lower extreme with central connecting pipe (8) are connected, the lower part of flow channel (302) inner wall is equipped with down spacing platform of annular (206).
6. A cementing apparatus according to claim 5, wherein: the side wall of the rubber plug (205) is provided with a multi-stage skirt.
7. A cementing apparatus according to claim 3, wherein: and the upper side of the upper supporting platform (3012) and the lower side of the lower supporting platform (3013) are provided with a multi-stage sealing platform.
8. A cementing apparatus according to claim 4, wherein: a plurality of drain holes (4) are formed in the side wall of the check shell (101), and the drain holes (4) are located between the upper supporting seat (102) and the lower supporting seat (103).
9. A cementing apparatus according to claim 1, wherein: the side wall of the central connecting pipe (8) is provided with a first-stage locator (9) and a second-stage locator (10), the first-stage locator (9) comprises a locating ring (901), the locating ring (901) is sleeved with the central connecting pipe (8), a plurality of locating rods (902) are connected to the peripheral side of the locating ring (901), and the other end of each locating rod (902) is connected with a locating wheel (903).
10. A method of cementing a well using a cementing apparatus according to any one of the claims 1 to 9, characterized in that: the method comprises the following steps:
s1: the non-return device (1) is assembled on the ground, then the non-return device (1), the second sleeve (5), the pipe hoop (6) connected with the heating equipment and the first sleeve (7) are sequentially connected, and the non-return device is lowered into the completed well;
s2: the separation device (3) and the central connecting pipe (8) are assembled on the ground, then the separation device (3) is put into the second sleeve (5), and the lower part of the separation device (3) is contacted with the upper surface of the non-return device (1);
s3: the grouting device (2) is assembled and then connected with the upper end of the central connecting pipe (8), after connection is completed, well cementation cement is injected into the central connecting pipe (8) from the cement slurry port (202), the separation component (303) expands after the well cementation cement is injected, the side wall of the expanded separation component (303) is attached to the inner wall of the second casing pipe (5), the second casing pipe (5) is separated into an upper part and a lower part, and cement slurry is prevented from entering the upper part of the second casing pipe (5);
s4: after a certain amount of cement slurry returns to the annular space between the casing and the well wall, stopping injecting the well cementation cement, applying pressure to the inside of the central connecting pipe (8) from the high-pressure air injection port (203), and pressing the cement slurry in the central connecting pipe (8) into the outside of the second casing (5);
s5: high-pressure gas in the central connecting pipe (8) is discharged, and then the separating device (3) is lifted to the ground to complete the well cementation operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457477.7A CN114876402A (en) | 2022-04-27 | 2022-04-27 | Well cementation device and well cementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457477.7A CN114876402A (en) | 2022-04-27 | 2022-04-27 | Well cementation device and well cementation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114876402A true CN114876402A (en) | 2022-08-09 |
Family
ID=82670812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210457477.7A Pending CN114876402A (en) | 2022-04-27 | 2022-04-27 | Well cementation device and well cementation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114876402A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132301A (en) * | 2004-10-06 | 2006-05-25 | Kyokado Eng Co Ltd | Ground injector |
| US20060219407A1 (en) * | 2005-03-14 | 2006-10-05 | Presssol Ltd. | Method and apparatus for cementing a well using concentric tubing or drill pipe |
| RU2292443C1 (en) * | 2005-07-08 | 2007-01-27 | Дмитрий Иванович Александров | Cementing device |
| CN107435527A (en) * | 2017-07-07 | 2017-12-05 | 中石化石油工程技术服务有限公司 | A kind of thin interlayer anti-channeling well cementing operation method |
| CN208686353U (en) * | 2018-08-14 | 2019-04-02 | 中国煤炭地质总局水文地质局 | A kind of detachable well cementation antipriming |
| CN212428775U (en) * | 2020-06-02 | 2021-01-29 | 周春雷 | Novel hydraulic fracturing hole packer |
| CN113153157A (en) * | 2021-04-12 | 2021-07-23 | 山东省地勘局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Surface layer high-pressure water gas layer drainage well cementation tool and process in geological drilling |
| CN214221142U (en) * | 2020-07-08 | 2021-09-17 | 周春雷 | Novel double-injection water seal hole device |
| CN217354328U (en) * | 2022-04-27 | 2022-09-02 | 陕西省煤田地质集团有限公司 | Well cementing device |
-
2022
- 2022-04-27 CN CN202210457477.7A patent/CN114876402A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006132301A (en) * | 2004-10-06 | 2006-05-25 | Kyokado Eng Co Ltd | Ground injector |
| US20060219407A1 (en) * | 2005-03-14 | 2006-10-05 | Presssol Ltd. | Method and apparatus for cementing a well using concentric tubing or drill pipe |
| RU2292443C1 (en) * | 2005-07-08 | 2007-01-27 | Дмитрий Иванович Александров | Cementing device |
| CN107435527A (en) * | 2017-07-07 | 2017-12-05 | 中石化石油工程技术服务有限公司 | A kind of thin interlayer anti-channeling well cementing operation method |
| CN208686353U (en) * | 2018-08-14 | 2019-04-02 | 中国煤炭地质总局水文地质局 | A kind of detachable well cementation antipriming |
| CN212428775U (en) * | 2020-06-02 | 2021-01-29 | 周春雷 | Novel hydraulic fracturing hole packer |
| CN214221142U (en) * | 2020-07-08 | 2021-09-17 | 周春雷 | Novel double-injection water seal hole device |
| CN113153157A (en) * | 2021-04-12 | 2021-07-23 | 山东省地勘局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Surface layer high-pressure water gas layer drainage well cementation tool and process in geological drilling |
| CN217354328U (en) * | 2022-04-27 | 2022-09-02 | 陕西省煤田地质集团有限公司 | Well cementing device |
Non-Patent Citations (2)
| Title |
|---|
| 杨甫;贺丹;马东民;段中会;田涛;付德亮;: "低阶煤储层微观孔隙结构多尺度联合表征", 岩性油气藏, no. 03 * |
| 王建全;李建业;: "南堡油田封隔式尾管回接工艺的应用与认识", 石油钻采工艺, no. 02, 20 March 2015 (2015-03-20) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10564079B2 (en) | Device, system and method for triaxial compression test with/without jacket by gas confining pressure on rock | |
| CN217354328U (en) | Well cementing device | |
| CN108119091A (en) | A kind of well cementation completion tubular column and method | |
| CN203394437U (en) | Automatic pressure relief and pressure test valve of underground pipe column of oil-water well | |
| CN110424920A (en) | A kind of self expandable anti-scaling water injection packer | |
| CN114876402A (en) | Well cementation device and well cementation method | |
| CN117052332A (en) | Filling tool for underground operation of oil field | |
| CN217558304U (en) | Foam discharging agent filling device | |
| CN203515413U (en) | Mechanical and hydraulic dual-action ground anchor assembly | |
| CN216588536U (en) | Oil well packer | |
| CN206656917U (en) | LP gas cylinder multistation automatic voltage withstanding experimental rig | |
| CN206647077U (en) | A kind of self-service pressurized expansion packer | |
| CN211230345U (en) | Fracturing wellhead conversion device | |
| CN212932228U (en) | Rubber cylinder detection unit and rubber cylinder detection device | |
| CN212837683U (en) | Self-checking packer and layered water plugging tubular column | |
| CN211058785U (en) | Drillable separated layer water injection process pipe column | |
| CN116654858B (en) | Oil gas recovery detector | |
| CN219528959U (en) | Large-drift-diameter plugging sand-washing well-flushing tubular column | |
| CN105986992B (en) | One kind can salvage long-plunger short pump barrel oil well pump | |
| CN218156823U (en) | Valve pressure testing device | |
| CN214145445U (en) | Prevent mixing integral type cementing head who scurries | |
| CN115110929B (en) | Temporary opening type water injection ball seat and water injection pipe column | |
| CN215889963U (en) | Soluble plug for oil pipe with press | |
| CN212406665U (en) | Lifting type packer for leakage finding and string testing | |
| CN2507001Y (en) | Self-seal type casing leakage detector |
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 |