CA3108213C - Temporary plugging screen pipe - Google Patents
Temporary plugging screen pipe Download PDFInfo
- Publication number
- CA3108213C CA3108213C CA3108213A CA3108213A CA3108213C CA 3108213 C CA3108213 C CA 3108213C CA 3108213 A CA3108213 A CA 3108213A CA 3108213 A CA3108213 A CA 3108213A CA 3108213 C CA3108213 C CA 3108213C
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- Canada
- Prior art keywords
- temporary plugging
- holes
- pipe body
- parts
- sand control
- 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.)
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- 239000004576 sand Substances 0.000 claims abstract description 69
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 8
- 229920000954 Polyglycolide Polymers 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000004633 polyglycolic acid Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 125000004122 cyclic group Chemical group 0.000 abstract description 9
- 239000002253 acid Substances 0.000 abstract description 7
- 230000020477 pH reduction Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 59
- 238000010276 construction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- E21B33/12—Packers; Plugs
-
- 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
- E21B43/10—Setting of casings, screens, liners or the like in wells
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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Pipe Accessories (AREA)
Abstract
The application provides a temporary plugging screen pipe and relates to the field of oil and gas production equipment. The temporary plugging screen pipe comprises a pipe body, a wall of the pipe body being provided with a plurality of through holes, and a wall of each through hole being provided with a first connecting structure; a sand control sleeve, a side wall of the sand control sleeve being provided with sieve holes, and the pipe body being sleeved with the sand control sleeve so that the through holes are covered, allowing fluid to sequentially pass through the sieve holes and the through holes before entering the pipe body; and temporary plugging parts, a side wall of each temporary plugging part being provided with a second connecting structure, the temporary plugging parts being plugged in the through holes, and the first connecting structures being connected with the second connecting structures; wherein the temporary plugging parts are made of soluble polymer. The pipe body of the temporary plugging screen pipe is plugged when first entering a well, so that it is possible to carry out cyclic sand washing and blockage removal, which effectively reduces the working cost of cyclic sand washing and blockage removal; in addition, during acidizing operation, acid liquid injected from a pipe mouth on the ground can directly reach a shaft bottom, and then flow back and out, thus ensuring smooth acidification.
Description
Temporary Plugging Screen Pipe Technical Field The application relates to the field of oil and gas production equipment, in particular to a temporary plugging screen pipe.
Background Art Sand control screen pipes are widely used in the construction of oil wells, gas wells and water wells in oil and gas fields. During construction, it is necessary to connect a construction string with the sand control screen pipe, so that liquid and gas can enter a production fairway after being filtered through the sand control screen pipe.
However, since conventional sand control screen pipes are through pipes, when encountering resistance during well entry, it is impossible to realize cyclic sand washing and blockage removal, instead, a sand control production string needs to be tripped out and a sand washing and blockage removal tool needs to be tripped in, which is both costly and risky. In acidizing operation, the same well entry problem exists too. Additionally, in acidizing operation, the conventional sand control screen pipe can cause acid to flow out from a through hole of the sand control screen pipe, thus being unable to ensure that acid is injected into a shaft bottom.
The above technical problems need to be solved.
Summary of the Invention The main purpose of the invention is to provide a temporary plugging screen pipe, which can solve the technical problems that conventional sand control screen pipes cannot realize cyclic sand washing and blockage removal and are not conducive to acidizing operation.
To solve the above technical problems, the embodiment of the application provides the following technical solution:
Date Recue/Date Received 2021-03-09 On one hand, the application provides a temporary plugging screen pipe, comprising:
a pipe body, a wall of the pipe body being provided with a plurality of through holes, and a wall of each through hole being provided with a first connecting structure;
a sand control sleeve, a side wall of the sand control sleeve being provided with sieve holes, and the pipe body being sleeved with the sand control sleeve so that the through holes are covered, allowing fluid to sequentially pass through the sieve holes and the through holes before entering the pipe body; and temporary plugging parts, a side wall of each temporary plugging part being provided with a second connecting structure, the temporary plugging parts being plugged in the through holes, and the first connecting structures being connected with the second connecting structures;
wherein the temporary plugging parts are made of a soluble polymer.
The following technical measures can also be adopted to realize the purpose of the invention and solve its technical problems.
Optionally, in the temporary plugging screen pipe, the first connecting structures are of an internal thread type, the second connecting structures are of an external thread type, and the temporary plugging parts are in threaded connection with the through holes.
Optionally, in the temporary plugging screen pipe, the first connecting structures are clamping grooves or clamping blocks arranged on the walls of the through holes, and the second connecting structures are clamping blocks or clamping grooves arranged on the side walls of the temporary plugging parts and matched with the first connecting structures.
Optionally, in the temporary plugging screen pipe, the through holes are round straight holes, the temporary plugging parts are cylindrical, and a first end of each
Background Art Sand control screen pipes are widely used in the construction of oil wells, gas wells and water wells in oil and gas fields. During construction, it is necessary to connect a construction string with the sand control screen pipe, so that liquid and gas can enter a production fairway after being filtered through the sand control screen pipe.
However, since conventional sand control screen pipes are through pipes, when encountering resistance during well entry, it is impossible to realize cyclic sand washing and blockage removal, instead, a sand control production string needs to be tripped out and a sand washing and blockage removal tool needs to be tripped in, which is both costly and risky. In acidizing operation, the same well entry problem exists too. Additionally, in acidizing operation, the conventional sand control screen pipe can cause acid to flow out from a through hole of the sand control screen pipe, thus being unable to ensure that acid is injected into a shaft bottom.
The above technical problems need to be solved.
Summary of the Invention The main purpose of the invention is to provide a temporary plugging screen pipe, which can solve the technical problems that conventional sand control screen pipes cannot realize cyclic sand washing and blockage removal and are not conducive to acidizing operation.
To solve the above technical problems, the embodiment of the application provides the following technical solution:
Date Recue/Date Received 2021-03-09 On one hand, the application provides a temporary plugging screen pipe, comprising:
a pipe body, a wall of the pipe body being provided with a plurality of through holes, and a wall of each through hole being provided with a first connecting structure;
a sand control sleeve, a side wall of the sand control sleeve being provided with sieve holes, and the pipe body being sleeved with the sand control sleeve so that the through holes are covered, allowing fluid to sequentially pass through the sieve holes and the through holes before entering the pipe body; and temporary plugging parts, a side wall of each temporary plugging part being provided with a second connecting structure, the temporary plugging parts being plugged in the through holes, and the first connecting structures being connected with the second connecting structures;
wherein the temporary plugging parts are made of a soluble polymer.
The following technical measures can also be adopted to realize the purpose of the invention and solve its technical problems.
Optionally, in the temporary plugging screen pipe, the first connecting structures are of an internal thread type, the second connecting structures are of an external thread type, and the temporary plugging parts are in threaded connection with the through holes.
Optionally, in the temporary plugging screen pipe, the first connecting structures are clamping grooves or clamping blocks arranged on the walls of the through holes, and the second connecting structures are clamping blocks or clamping grooves arranged on the side walls of the temporary plugging parts and matched with the first connecting structures.
Optionally, in the temporary plugging screen pipe, the through holes are round straight holes, the temporary plugging parts are cylindrical, and a first end of each
2 Date Recue/Date Received 2021-03-09 temporary plugging part is provided with a straight groove or a cross groove extending towards a second end.
Optionally, in the temporary plugging screen pipe, the length of the temporary plugging parts is less than or equal to the wall thickness of the pipe body, and both ends of each temporary plugging part are flush with or lower than the inner and outer surfaces of the wall of the pipe body.
Optionally, in the temporary plugging screen pipe, the diameter of the through holes gradually decreases from the inner surface to the outer surface of the wall of the pipe body;
the temporary plugging parts are in a truncated cone shape and are elastic;
and a connecting cord is arranged in a middle portion of each temporary plugging part in a penetrating mode, and both ends of each connecting cord extend out of the two ends of the corresponding temporary plugging part respectively by a preset distance.
Optionally, in the temporary plugging screen pipe, the soluble polymer is polyglycolic acid.
Optionally, the temporary plugging screen pipe further comprises:
soluble gum layers disposed between the first connecting structures and the second connecting structures.
Optionally, in the temporary plugging screen pipe, the soluble gum layers are made of an oil-soluble temporary plugging agent.
Optionally, in the temporary plugging screen pipe, the sand control sleeve comprises an inner protective sleeve and an outer protective sleeve which are sleeved together, the inner protective sleeve and the outer protective sleeve are both provided with the sieve holes, and an interlayer is formed between the inner protective sleeve and the outer protective sleeve and filled with sand control particles;
Optionally, in the temporary plugging screen pipe, the length of the temporary plugging parts is less than or equal to the wall thickness of the pipe body, and both ends of each temporary plugging part are flush with or lower than the inner and outer surfaces of the wall of the pipe body.
Optionally, in the temporary plugging screen pipe, the diameter of the through holes gradually decreases from the inner surface to the outer surface of the wall of the pipe body;
the temporary plugging parts are in a truncated cone shape and are elastic;
and a connecting cord is arranged in a middle portion of each temporary plugging part in a penetrating mode, and both ends of each connecting cord extend out of the two ends of the corresponding temporary plugging part respectively by a preset distance.
Optionally, in the temporary plugging screen pipe, the soluble polymer is polyglycolic acid.
Optionally, the temporary plugging screen pipe further comprises:
soluble gum layers disposed between the first connecting structures and the second connecting structures.
Optionally, in the temporary plugging screen pipe, the soluble gum layers are made of an oil-soluble temporary plugging agent.
Optionally, in the temporary plugging screen pipe, the sand control sleeve comprises an inner protective sleeve and an outer protective sleeve which are sleeved together, the inner protective sleeve and the outer protective sleeve are both provided with the sieve holes, and an interlayer is formed between the inner protective sleeve and the outer protective sleeve and filled with sand control particles;
3 Date Recue/Date Received 2021-03-09 wherein the grain size of the sand control particles is larger than the size of a maximum opening position of the sieve holes.
With the above technical solution, the temporary plugging screen pipe has at least the following advantages:
The temporary plugging screen pipe provided by the embodiment of the invention is additionally provided with the temporary plugging parts, which can plug the through holes in the pipe body and are made of the soluble polymer, so that when a sand control production string formed by the sand control screen pipe and an oil pipe is lowered into a well, the through holes in the pipe body are plugged, and therefore for the sand control production string, only a pipe mouth on the ground and a pipe mouth at a shaft bottom are open, and other parts are plugged; at this point, if encountering resistance, it is possible to carry out cyclic sand washing and blockage removal without taking out the sand control production string and tripping in a sand washing and blockage removal tool, which effectively reduces the working cost of cyclic sand washing and blockage removal; in addition, during acidizing operation, acid liquid injected from the pipe mouth on the ground can directly reach the shaft bottom, and then flow back and out, thus ensuring smooth acidification and avoiding the situation in the prior art that acid liquid flows out of the sand control screen pipe and cannot be injected into the shaft bottom.
The above description is only an overview of the technical solution of the invention.
In order to understand the technical means of the invention more clearly and implement it according to the contents of the specification, the preferred embodiments of the invention will be described in detail below in conjunction with the accompanying drawings.
Brief Description of the Drawings The above and other objects, features and advantages of exemplary embodiments of the application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several
With the above technical solution, the temporary plugging screen pipe has at least the following advantages:
The temporary plugging screen pipe provided by the embodiment of the invention is additionally provided with the temporary plugging parts, which can plug the through holes in the pipe body and are made of the soluble polymer, so that when a sand control production string formed by the sand control screen pipe and an oil pipe is lowered into a well, the through holes in the pipe body are plugged, and therefore for the sand control production string, only a pipe mouth on the ground and a pipe mouth at a shaft bottom are open, and other parts are plugged; at this point, if encountering resistance, it is possible to carry out cyclic sand washing and blockage removal without taking out the sand control production string and tripping in a sand washing and blockage removal tool, which effectively reduces the working cost of cyclic sand washing and blockage removal; in addition, during acidizing operation, acid liquid injected from the pipe mouth on the ground can directly reach the shaft bottom, and then flow back and out, thus ensuring smooth acidification and avoiding the situation in the prior art that acid liquid flows out of the sand control screen pipe and cannot be injected into the shaft bottom.
The above description is only an overview of the technical solution of the invention.
In order to understand the technical means of the invention more clearly and implement it according to the contents of the specification, the preferred embodiments of the invention will be described in detail below in conjunction with the accompanying drawings.
Brief Description of the Drawings The above and other objects, features and advantages of exemplary embodiments of the application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several
4 Date Recue/Date Received 2021-03-09 embodiments of the application are illustrated by way of example and not limitation, and identical or corresponding reference numerals denote identical or corresponding parts, in which:
Fig. 1 schematically shows a structural diagram of a temporary plugging screen pipe;
Fig. 2 schematically shows an enlarged view of position A in Fig. 1;
Fig. 3 schematically shows a structural diagram of another temporary plugging screen pipe; and Fig. 4 schematically shows an enlarged view of position B in Fig. 3.
The reference numerals in Figs. 1- 4 are:
pipe body 1, through hole 11, first connecting structure 111, sand control sleeve 2, sieve hole 21, temporary plugging part 3, second connecting structure 31 and straight groove 32.
Detailed Description of the Invention Exemplary embodiments of the disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the disclosure and to fully convey the scope of the disclosure to those skilled in the art.
It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the application shall have the general meaning understood by those skilled in the field to which the application belongs.
As shown in Figs. 1-4, a temporary plugging screen pipe provided by the embodiment of the invention comprises:
Date Recue/Date Received 2021-03-09 a pipe body 1, a sand control sleeve 2 and temporary plugging parts 3; a wall of the pipe body 1 is provided with a plurality of through holes 11, and a wall of each through hole 11 is provided with a first connecting structure 111; a side wall of the sand control sleeve 2 is provided with sieve holes 21, and the pipe body 1 is sleeved with the sand control sleeve 2 so that the through holes 11 are covered, allowing fluid to sequentially pass through the sieve holes 21 and the through holes 11 before entering the pipe body 1; and a side wall of each temporary plugging part 3 is provided with a second connecting structure 31, the temporary plugging parts 3 are plugged in the through holes 11, and the first connecting structures 111 are connected with the second connecting structures 31; wherein the temporary plugging parts 3 are made of soluble polymer.
In specific implementation, the pipe body 1 is the same as an oil pipe running into the well, with a unique feature that the through holes 11 are formed in the wall to allow oil, gas, water and other products in a reservoir to pass through, so the structure and material of the pipe body 1 are not described in detail in this embodiment of the invention. The walls of the through holes 11 in the wall of the pipe body 1 need to be provided with the first connecting structures 111, so as to be connected with the temporary plugging parts 3, and the first connecting structures 111 need to be matched with the second connecting structures 31 on the temporary plugging parts 3 to ensure the connecting strength with the temporary plugging parts 3, so as to bear certain pressure.
The sand control sleeve 2 is a structure for retaining sand which is sleeved on the outer wall of the pipe body 1. One can refer to the structure of the sand control sleeve 2 of the current sand control screen pipe, which may be a single-layer sand control screen sleeved on the outer wall of the pipe body 1, or a sandwich structure with sand control objects arranged in a sandwich layer. It should be noted that the sand control sleeve 2 needs to cover all the through holes 11 in the wall of the pipe body 1, so that all the reservoir products pass through the sieve holes 21 of the sand control sleeve 2 first, then enter the through holes 11, and finally enter the pipe body 1 to be extracted Date Recue/Date Received 2021-03-09 on the ground. The sieve holes 21 of the sand control sleeve 2 are preferably bridge-shaped punched holes, that is, the metal at the center of the punched hole of the sand control sleeve 2 is raised through punching, two opposite sides are connected with a main body of the sand control sleeve 2, and the other two opposite sides are separated from the main body of the sand control sleeve 2 to form a bridge-like structure. This is like putting a piece of metal in front of the sieve holes 21, so that gas or liquid passes through side openings, which can effectively reduce the impact force and block mud and sand to a certain degree.
The temporary plugging parts 3 are used for temporarily plugging the through holes 11 in the pipe body 1, and need to be made of a soluble polymer, that is, the temporary plugging parts 3 only temporarily plug the through holes 11 in the pipe body 1, and when the cyclic sand washing and blockage removal work is done and/or the acidizing operation is completed, the temporary plugging parts 3 will be slowly pulverized with the contact with water or oil, so that the through holes 11 of the pipe body 1 become open, which means that a channel, communicating with the outside, of the temporary plugging screen pipe is opened, so that normal production can be started. The soluble polymer can be polyglycolic acid, either low molecular weight polyglycolic acid or high molecular weight polyglycolic acid can be selected as needed, and other materials can be used as the soluble polymer too. The specific selection method is known to those skilled in the art, and will not be explained here.
In addition, the second connecting structures 31 on the side walls of the temporary plugging parts 3 need to be matched with the first connecting structures 111 in the through holes 11 of the pipe body 1, and connecting strength needs to be ensured, so that certain pressure, for example, 2-3 MPa, can be borne while the through holes 11 are plugged.
The temporary plugging screen pipe provided by the embodiment of the invention is additionally provided with the temporary plugging parts 3, which can plug the through holes 11 in the pipe body 1 and are made of the soluble polymer, so that when a sand control production string formed by the sand control screen pipe and an oil Date Recue/Date Received 2021-03-09 pipe is lowered into a well, the through holes 11 in the pipe body 1 are plugged, and therefore for the sand control production string, only a pipe mouth on the ground and a pipe mouth at a shaft bottom are open, and other parts are plugged; at this point, if encountering resistance, it is possible to carry out cyclic sand washing and blockage removal without taking out the sand control production string and tripping in a sand washing and blockage removal tool, which effectively reduces the working cost of cyclic sand washing and blockage removal; in addition, during acidizing operation, acid liquid injected from the pipe mouth on the ground can directly reach the shaft bottom, and then flow back and out, thus ensuring smooth acidification and avoiding the situation in the prior art that acid liquid flows out of the sand control screen pipe and cannot be injected into the shaft bottom.
In specific implementation, the first connecting structures 111 and the second connecting structures 31 may be of various structures, and the corresponding through holes 11 and the temporary plugging parts 3 may also have various structures, and the preferred ones are selected as examples in the embodiment of the invention:
In a first case, as shown in Fig. 1 and Fig. 2, the through holes 11 may be circular straight holes, the temporary plugging parts 3 may be cylindrical, the first connecting structures 111 are of an internal thread type, the second connecting structures 31 are of an external thread type, and the temporary plugging parts 3 are in threaded connection with the through holes 11.
Specifically, in this case, each temporary plugging part 3 may be in a stud shape, a straight groove or a cross groove for screw-driving is formed in one end, and the straight groove 32 or the cross groove extends from a first end to a second end of the temporary plugging part 3. The groove may also be in other shapes, such as a polygonal groove.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts Date Recue/Date Received 2021-03-09 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a second case, as shown in Fig. 3 and Fig. 4, the through holes 11 can be set as circular straight holes, the temporary plugging parts 3 can be cylindrical, the first connecting structures 111 can be set as clamping grooves or clamping blocks, and the second connecting structures 31 can be correspondingly set as clamping blocks or clamping grooves.
Specifically, in this case, the temporary plugging parts 3 are connected with the through holes 11 through clamping, the clamping grooves may be a through groove surrounding the walls of the through holes 11 and two or more of them can be arranged side by side, or the clamping grooves can be discontinuous grooves arranged around the walls of the through holes 11 and two or more of them can be arranged side by side, and then the clamping blocks are matched with the clamping grooves and adaptively arranged on the side walls of the temporary plugging parts 3.
Or reversely, the above-mentioned clamping blocks can be arranged on the walls of the through holes 11, and the blocking grooves are formed in the side walls of the temporary plugging parts 3, which will not be described in detail. The specific structures of the clamping grooves and the clamping blocks are not limited, as long as certain pressure can be borne after the temporary plugging parts 3 are connected with the through holes 11 through clamping.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a third case, the through holes 11 may be tapered holes (not shown in the figure, the Date Recue/Date Received 2021-03-09 through hole in Fig. 1 can be directly replaced with a tapered hole), that is, the diameter of the through holes 11 gradually decreases from an inner surface to an outer surface of the wall of the pipe body 1; the temporary plugging parts 3 are in a truncated cone shape and are elastic; and then, a connecting cord is arranged in a middle portion of each temporary plugging part 3 in a penetrating mode, and both ends of each connecting cord extend out of the two ends of the corresponding temporary plugging part 3 respectively by a preset distance. The first connecting structures 111 are of an internal thread type, and the second connecting structures 31 are of an external thread type.
Specifically, the temporary plugging parts 3 can be plugged in the through holes 11 by pulling the connecting cords, the temporary plugging parts 3 can be matched with the through holes 11 through elastic deforming, and the first connecting structures 111 can be matched with the second connecting structures 31. Besides, the strength and hardness of the temporary plugging parts 3 can be increased by heating curing or chemical curing, so as to ensure the connecting strength between the temporary plugging parts 3 and the through holes 11 to bear certain pressure.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a fourth case, the through holes 11 may be tapered holes (not shown in the figure, the through hole in Fig. 3 can be directly replaced with a tapered hole), that is, the diameter of the through holes 11 gradually decreases from an inner surface to an outer surface of the wall of the pipe body 1; the temporary plugging parts 3 are in a truncated cone shape and are elastic; a connecting cord is arranged in a middle portion of each temporary plugging part 3 in a penetrating mode, and both ends of each Date Recue/Date Received 2021-03-09 connecting cord extend out of the two ends of the corresponding temporary plugging part 3 respectively by a preset distance; and then, the first connecting structures 111 are arranged as clamping grooves or clamping blocks, and the second connecting structures 31 are correspondingly clamping blocks or clamping grooves.
Specifically, one can refer to the description in the second case for the structures of the clamping grooves or clamping blocks, which will not be repeated here.
During assembly, the temporary plugging parts 3 can be plugged in the through holes 11 by pulling the connecting cords, the temporary plugging parts 3 can be matched with the through holes 11 through elastic deforming, and the first connecting structures 111 can be matched with the second connecting structures 31. Besides, the strength and hardness of the temporary plugging parts 3 can be increased by heating curing or chemical curing, so as to ensure the connecting strength between the temporary plugging parts 3 and the through holes 11 to bear certain pressure.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In specific implementation, the temporary plugging screen pipe provided by the embodiment of the invention further comprises soluble gum layers (not shown in the figure) disposed between the first connecting structures 111 and the second connecting structures 31.
Specifically, the arrangement of the soluble gum layers not only improves the connecting strength between the temporary plugging parts 3 and the through holes 11, but also enhances the sealing performance of a connecting position of the two.
The soluble gum layers are made of an oil-soluble temporary plugging agent, and the Date Recue/Date Received 2021-03-09 specific formula and use mode of the oil-soluble temporary plugging agent are known to those skilled in the art, which are not limited here. The oil-soluble temporary plugging agent is available in the market.
In specific implementation, the sand control sleeve 2 comprises an inner protective sleeve and an outer protective sleeve which are sleeved together, the inner protective sleeve and the outer protective sleeve are both provided with the sieve holes 21, and an interlayer is formed between the inner protective sleeve and the outer protective sleeve and filled with sand control particles; wherein the grain size of the sand control particles is larger than the size of a maximum opening position of the sieve holes 21.
Specifically, the sand control particles can be ceramic particles, quartz sand particles, etc.
The above embodiments are described with different emphases. For those parts that are not detailed in one embodiment, please refer to the relevant descriptions in other embodiments.
It can be understood that the relevant features in the above devices are mutually referable. In addition, "first", "second", etc. in the above embodiments are used to distinguish different embodiments, and do not represent the advantages and disadvantages of the embodiments.
In the specification provided herein, numerous specific details are set forth.
However, it should be understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of the specification.
Similarly, it should be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof in order to streamline the present disclosure and help understand one or more of the various Date Recue/Date Received 2021-03-09 inventive aspects. However, the disclosed device should not be interpreted as reflecting the intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It can be understood by those skilled in the art that the components in the device in one embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The components in the embodiments may be combined into one component, or divided into a plurality of sub-components.
Except that at least some of such features are mutually exclusive, all features disclosed in this specification (including accompanying claims, abstract and drawings) and all components of any device so disclosed may be combined in any combination.
Unless explicitly stated otherwise, each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
In addition, those skilled in the art can understand that although some embodiments described herein include some features included in other embodiments rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination. The various component embodiments of the invention may be implemented in hardware or in a combination thereof.
The above are only specific embodiments of the application, but the protection scope of the application is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the application, which should be covered within the protection scope of the application. Therefore, the Date Recue/Date Received 2021-03-09 protection scope of the application shall be subject to the protection scope of the claims.
Date Recue/Date Received 2021-03-09
Fig. 1 schematically shows a structural diagram of a temporary plugging screen pipe;
Fig. 2 schematically shows an enlarged view of position A in Fig. 1;
Fig. 3 schematically shows a structural diagram of another temporary plugging screen pipe; and Fig. 4 schematically shows an enlarged view of position B in Fig. 3.
The reference numerals in Figs. 1- 4 are:
pipe body 1, through hole 11, first connecting structure 111, sand control sleeve 2, sieve hole 21, temporary plugging part 3, second connecting structure 31 and straight groove 32.
Detailed Description of the Invention Exemplary embodiments of the disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the disclosure and to fully convey the scope of the disclosure to those skilled in the art.
It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the application shall have the general meaning understood by those skilled in the field to which the application belongs.
As shown in Figs. 1-4, a temporary plugging screen pipe provided by the embodiment of the invention comprises:
Date Recue/Date Received 2021-03-09 a pipe body 1, a sand control sleeve 2 and temporary plugging parts 3; a wall of the pipe body 1 is provided with a plurality of through holes 11, and a wall of each through hole 11 is provided with a first connecting structure 111; a side wall of the sand control sleeve 2 is provided with sieve holes 21, and the pipe body 1 is sleeved with the sand control sleeve 2 so that the through holes 11 are covered, allowing fluid to sequentially pass through the sieve holes 21 and the through holes 11 before entering the pipe body 1; and a side wall of each temporary plugging part 3 is provided with a second connecting structure 31, the temporary plugging parts 3 are plugged in the through holes 11, and the first connecting structures 111 are connected with the second connecting structures 31; wherein the temporary plugging parts 3 are made of soluble polymer.
In specific implementation, the pipe body 1 is the same as an oil pipe running into the well, with a unique feature that the through holes 11 are formed in the wall to allow oil, gas, water and other products in a reservoir to pass through, so the structure and material of the pipe body 1 are not described in detail in this embodiment of the invention. The walls of the through holes 11 in the wall of the pipe body 1 need to be provided with the first connecting structures 111, so as to be connected with the temporary plugging parts 3, and the first connecting structures 111 need to be matched with the second connecting structures 31 on the temporary plugging parts 3 to ensure the connecting strength with the temporary plugging parts 3, so as to bear certain pressure.
The sand control sleeve 2 is a structure for retaining sand which is sleeved on the outer wall of the pipe body 1. One can refer to the structure of the sand control sleeve 2 of the current sand control screen pipe, which may be a single-layer sand control screen sleeved on the outer wall of the pipe body 1, or a sandwich structure with sand control objects arranged in a sandwich layer. It should be noted that the sand control sleeve 2 needs to cover all the through holes 11 in the wall of the pipe body 1, so that all the reservoir products pass through the sieve holes 21 of the sand control sleeve 2 first, then enter the through holes 11, and finally enter the pipe body 1 to be extracted Date Recue/Date Received 2021-03-09 on the ground. The sieve holes 21 of the sand control sleeve 2 are preferably bridge-shaped punched holes, that is, the metal at the center of the punched hole of the sand control sleeve 2 is raised through punching, two opposite sides are connected with a main body of the sand control sleeve 2, and the other two opposite sides are separated from the main body of the sand control sleeve 2 to form a bridge-like structure. This is like putting a piece of metal in front of the sieve holes 21, so that gas or liquid passes through side openings, which can effectively reduce the impact force and block mud and sand to a certain degree.
The temporary plugging parts 3 are used for temporarily plugging the through holes 11 in the pipe body 1, and need to be made of a soluble polymer, that is, the temporary plugging parts 3 only temporarily plug the through holes 11 in the pipe body 1, and when the cyclic sand washing and blockage removal work is done and/or the acidizing operation is completed, the temporary plugging parts 3 will be slowly pulverized with the contact with water or oil, so that the through holes 11 of the pipe body 1 become open, which means that a channel, communicating with the outside, of the temporary plugging screen pipe is opened, so that normal production can be started. The soluble polymer can be polyglycolic acid, either low molecular weight polyglycolic acid or high molecular weight polyglycolic acid can be selected as needed, and other materials can be used as the soluble polymer too. The specific selection method is known to those skilled in the art, and will not be explained here.
In addition, the second connecting structures 31 on the side walls of the temporary plugging parts 3 need to be matched with the first connecting structures 111 in the through holes 11 of the pipe body 1, and connecting strength needs to be ensured, so that certain pressure, for example, 2-3 MPa, can be borne while the through holes 11 are plugged.
The temporary plugging screen pipe provided by the embodiment of the invention is additionally provided with the temporary plugging parts 3, which can plug the through holes 11 in the pipe body 1 and are made of the soluble polymer, so that when a sand control production string formed by the sand control screen pipe and an oil Date Recue/Date Received 2021-03-09 pipe is lowered into a well, the through holes 11 in the pipe body 1 are plugged, and therefore for the sand control production string, only a pipe mouth on the ground and a pipe mouth at a shaft bottom are open, and other parts are plugged; at this point, if encountering resistance, it is possible to carry out cyclic sand washing and blockage removal without taking out the sand control production string and tripping in a sand washing and blockage removal tool, which effectively reduces the working cost of cyclic sand washing and blockage removal; in addition, during acidizing operation, acid liquid injected from the pipe mouth on the ground can directly reach the shaft bottom, and then flow back and out, thus ensuring smooth acidification and avoiding the situation in the prior art that acid liquid flows out of the sand control screen pipe and cannot be injected into the shaft bottom.
In specific implementation, the first connecting structures 111 and the second connecting structures 31 may be of various structures, and the corresponding through holes 11 and the temporary plugging parts 3 may also have various structures, and the preferred ones are selected as examples in the embodiment of the invention:
In a first case, as shown in Fig. 1 and Fig. 2, the through holes 11 may be circular straight holes, the temporary plugging parts 3 may be cylindrical, the first connecting structures 111 are of an internal thread type, the second connecting structures 31 are of an external thread type, and the temporary plugging parts 3 are in threaded connection with the through holes 11.
Specifically, in this case, each temporary plugging part 3 may be in a stud shape, a straight groove or a cross groove for screw-driving is formed in one end, and the straight groove 32 or the cross groove extends from a first end to a second end of the temporary plugging part 3. The groove may also be in other shapes, such as a polygonal groove.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts Date Recue/Date Received 2021-03-09 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a second case, as shown in Fig. 3 and Fig. 4, the through holes 11 can be set as circular straight holes, the temporary plugging parts 3 can be cylindrical, the first connecting structures 111 can be set as clamping grooves or clamping blocks, and the second connecting structures 31 can be correspondingly set as clamping blocks or clamping grooves.
Specifically, in this case, the temporary plugging parts 3 are connected with the through holes 11 through clamping, the clamping grooves may be a through groove surrounding the walls of the through holes 11 and two or more of them can be arranged side by side, or the clamping grooves can be discontinuous grooves arranged around the walls of the through holes 11 and two or more of them can be arranged side by side, and then the clamping blocks are matched with the clamping grooves and adaptively arranged on the side walls of the temporary plugging parts 3.
Or reversely, the above-mentioned clamping blocks can be arranged on the walls of the through holes 11, and the blocking grooves are formed in the side walls of the temporary plugging parts 3, which will not be described in detail. The specific structures of the clamping grooves and the clamping blocks are not limited, as long as certain pressure can be borne after the temporary plugging parts 3 are connected with the through holes 11 through clamping.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a third case, the through holes 11 may be tapered holes (not shown in the figure, the Date Recue/Date Received 2021-03-09 through hole in Fig. 1 can be directly replaced with a tapered hole), that is, the diameter of the through holes 11 gradually decreases from an inner surface to an outer surface of the wall of the pipe body 1; the temporary plugging parts 3 are in a truncated cone shape and are elastic; and then, a connecting cord is arranged in a middle portion of each temporary plugging part 3 in a penetrating mode, and both ends of each connecting cord extend out of the two ends of the corresponding temporary plugging part 3 respectively by a preset distance. The first connecting structures 111 are of an internal thread type, and the second connecting structures 31 are of an external thread type.
Specifically, the temporary plugging parts 3 can be plugged in the through holes 11 by pulling the connecting cords, the temporary plugging parts 3 can be matched with the through holes 11 through elastic deforming, and the first connecting structures 111 can be matched with the second connecting structures 31. Besides, the strength and hardness of the temporary plugging parts 3 can be increased by heating curing or chemical curing, so as to ensure the connecting strength between the temporary plugging parts 3 and the through holes 11 to bear certain pressure.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In a fourth case, the through holes 11 may be tapered holes (not shown in the figure, the through hole in Fig. 3 can be directly replaced with a tapered hole), that is, the diameter of the through holes 11 gradually decreases from an inner surface to an outer surface of the wall of the pipe body 1; the temporary plugging parts 3 are in a truncated cone shape and are elastic; a connecting cord is arranged in a middle portion of each temporary plugging part 3 in a penetrating mode, and both ends of each Date Recue/Date Received 2021-03-09 connecting cord extend out of the two ends of the corresponding temporary plugging part 3 respectively by a preset distance; and then, the first connecting structures 111 are arranged as clamping grooves or clamping blocks, and the second connecting structures 31 are correspondingly clamping blocks or clamping grooves.
Specifically, one can refer to the description in the second case for the structures of the clamping grooves or clamping blocks, which will not be repeated here.
During assembly, the temporary plugging parts 3 can be plugged in the through holes 11 by pulling the connecting cords, the temporary plugging parts 3 can be matched with the through holes 11 through elastic deforming, and the first connecting structures 111 can be matched with the second connecting structures 31. Besides, the strength and hardness of the temporary plugging parts 3 can be increased by heating curing or chemical curing, so as to ensure the connecting strength between the temporary plugging parts 3 and the through holes 11 to bear certain pressure.
Further, to avoid affecting the assembly between the pipe body 1 and the sand control sleeve 2 and the circulation of liquid inside the pipe body 1 while the temporary plugging parts 3 plug the through holes 11, the length of the temporary plugging parts 3 can be set equal to or less than the thickness of the wall of the pipe body 1, and both ends of each temporary plugging part 3 are flush with or lower than the inner and outer surfaces of the wall of the pipe body 1.
In specific implementation, the temporary plugging screen pipe provided by the embodiment of the invention further comprises soluble gum layers (not shown in the figure) disposed between the first connecting structures 111 and the second connecting structures 31.
Specifically, the arrangement of the soluble gum layers not only improves the connecting strength between the temporary plugging parts 3 and the through holes 11, but also enhances the sealing performance of a connecting position of the two.
The soluble gum layers are made of an oil-soluble temporary plugging agent, and the Date Recue/Date Received 2021-03-09 specific formula and use mode of the oil-soluble temporary plugging agent are known to those skilled in the art, which are not limited here. The oil-soluble temporary plugging agent is available in the market.
In specific implementation, the sand control sleeve 2 comprises an inner protective sleeve and an outer protective sleeve which are sleeved together, the inner protective sleeve and the outer protective sleeve are both provided with the sieve holes 21, and an interlayer is formed between the inner protective sleeve and the outer protective sleeve and filled with sand control particles; wherein the grain size of the sand control particles is larger than the size of a maximum opening position of the sieve holes 21.
Specifically, the sand control particles can be ceramic particles, quartz sand particles, etc.
The above embodiments are described with different emphases. For those parts that are not detailed in one embodiment, please refer to the relevant descriptions in other embodiments.
It can be understood that the relevant features in the above devices are mutually referable. In addition, "first", "second", etc. in the above embodiments are used to distinguish different embodiments, and do not represent the advantages and disadvantages of the embodiments.
In the specification provided herein, numerous specific details are set forth.
However, it should be understood that the embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of the specification.
Similarly, it should be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof in order to streamline the present disclosure and help understand one or more of the various Date Recue/Date Received 2021-03-09 inventive aspects. However, the disclosed device should not be interpreted as reflecting the intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It can be understood by those skilled in the art that the components in the device in one embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The components in the embodiments may be combined into one component, or divided into a plurality of sub-components.
Except that at least some of such features are mutually exclusive, all features disclosed in this specification (including accompanying claims, abstract and drawings) and all components of any device so disclosed may be combined in any combination.
Unless explicitly stated otherwise, each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
In addition, those skilled in the art can understand that although some embodiments described herein include some features included in other embodiments rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination. The various component embodiments of the invention may be implemented in hardware or in a combination thereof.
The above are only specific embodiments of the application, but the protection scope of the application is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the application, which should be covered within the protection scope of the application. Therefore, the Date Recue/Date Received 2021-03-09 protection scope of the application shall be subject to the protection scope of the claims.
Date Recue/Date Received 2021-03-09
Claims (9)
1. A temporary plugging screen pipe, comprising:
a pipe body, a wall of the pipe body being provided with a plurality of through holes, and a wall of each through hole being provided with a first connecting structure;
a sand control sleeve, a side wall of the sand control sleeve being provided with sieve holes, the sieve holes being bridge-shaped punched holes, and the pipe body being sleeved with the sand control sleeve so that the through holes are covered, allowing fluid to sequentially pass through the sieve holes and the through holes before entering the pipe body; and temporary plugging parts, a side wall of each of the temporary plugging parts being provided with a second connecting structure, the temporary plugging parts being plugged in the through holes, and the first connecting structures being connected with the second connecting structures;
wherein the temporary plugging parts are made of soluble polymer;
a diameter of the through holes gradually decreases from an inner surface to an outer surface of the wall of the pipe body;
the temporary plugging parts are in a truncated cone shape and are elastic;
and a connecting cord is arranged in a middle portion of each of the temporary plugging parts in a penetrating mode, and both ends of the connecting cord extend out of two ends of the temporary plugging part respectively by a preset distance.
a pipe body, a wall of the pipe body being provided with a plurality of through holes, and a wall of each through hole being provided with a first connecting structure;
a sand control sleeve, a side wall of the sand control sleeve being provided with sieve holes, the sieve holes being bridge-shaped punched holes, and the pipe body being sleeved with the sand control sleeve so that the through holes are covered, allowing fluid to sequentially pass through the sieve holes and the through holes before entering the pipe body; and temporary plugging parts, a side wall of each of the temporary plugging parts being provided with a second connecting structure, the temporary plugging parts being plugged in the through holes, and the first connecting structures being connected with the second connecting structures;
wherein the temporary plugging parts are made of soluble polymer;
a diameter of the through holes gradually decreases from an inner surface to an outer surface of the wall of the pipe body;
the temporary plugging parts are in a truncated cone shape and are elastic;
and a connecting cord is arranged in a middle portion of each of the temporary plugging parts in a penetrating mode, and both ends of the connecting cord extend out of two ends of the temporary plugging part respectively by a preset distance.
2. The temporary plugging screen pipe according to claim 1, characterized in that the first connecting structures are of an internal thread type, the second connecting structures are of an external thread type, and the temporary plugging parts are in threaded connection with the through holes.
Date Recue/Date Received 2023-03-01
Date Recue/Date Received 2023-03-01
3. The temporary plugging screen pipe according to claim 1, characterized in that the first connecting structures are clamping grooves or clamping blocks arranged on the walls of the through holes, and the second connecting structures are clamping blocks or clamping grooves arranged on the side walls of the temporary plugging parts and matched with the first connecting structures.
4. The temporary plugging screen pipe according to claim 2 or 3, characterized in that the through holes are round straight holes, the temporary plugging parts are cylindrical, and a first end of each of the temporary plugging parts is provided with a straight groove or a cross groove extending towards a second end.
5. The temporary plugging screen pipe according to claim 4, characterized in that the length of the temporary plugging parts is less than or equal to the wall thickness of the pipe body, and both ends of each temporary plugging part are flush with or lower than the inner and outer surfaces of the wall of the pipe body.
6. The temporary plugging screen pipe according to claim 1, characterized in that the soluble polymer is polyglycolic acid.
7. The temporary plugging screen pipe according to claim 1, characterized by further comprising:
soluble gum layers disposed between the first connecting structures and the second connecting structures.
soluble gum layers disposed between the first connecting structures and the second connecting structures.
8. The temporary plugging screen pipe according to claim 7, characterized in that the soluble gum layers are made of an oil-soluble temporary plugging agent.
9. The temporary plugging screen pipe according to claim 1, characterized in that Date Regue/Date Received 2023-03-01 the sand control sleeve comprises an inner protective sleeve and an outer protective sleeve which are sleeved together, the inner protective sleeve and the outer protective sleeve are both provided with the sieve holes, and an interlayer is formed between the inner protective sleeve and the outer protective sleeve and filled with sand control particles;
wherein the grain size of the sand control particles is larger than the size of a maximum opening position of the sieve holes.
Date Regue/Date Received 2023-03-01
wherein the grain size of the sand control particles is larger than the size of a maximum opening position of the sieve holes.
Date Regue/Date Received 2023-03-01
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473760.6A CN112554851A (en) | 2020-12-15 | 2020-12-15 | Temporary plugging sieve tube |
| CN202011473760.6 | 2020-12-15 |
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| CA3108213A1 CA3108213A1 (en) | 2022-06-15 |
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| CA3108213A Active CA3108213C (en) | 2020-12-15 | 2021-02-05 | Temporary plugging screen pipe |
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| CN (1) | CN112554851A (en) |
| CA (1) | CA3108213C (en) |
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| CN115306354A (en) * | 2022-10-09 | 2022-11-08 | 四川圣诺油气工程技术服务有限公司 | Temporary plugging type liner tube for under-pressure pressing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320178A (en) * | 1992-12-08 | 1994-06-14 | Atlantic Richfield Company | Sand control screen and installation method for wells |
| WO2010069117A1 (en) * | 2008-12-17 | 2010-06-24 | 中国石油天然气集团公司 | Sieve tube well completion method in under-balanced condition and temporary plugging type sieve tube |
| CN201554436U (en) * | 2009-12-08 | 2010-08-18 | 安东石油技术（集团）有限公司 | Temporary plugging sieve tube capable of being opened |
| CN104675369A (en) * | 2015-02-12 | 2015-06-03 | 安东石油技术（集团）有限公司 | Sand control sieve pipe and manufacturing method of sand control sieve pipe |
| CN211201905U (en) * | 2019-06-17 | 2020-08-07 | 中国石油天然气股份有限公司 | Temporary plugging sand-proof screen pipe |
| CN110821449A (en) * | 2019-11-28 | 2020-02-21 | 新疆恒智伟业石油工程技术开发有限公司 | Completion pipe string of carbonate rock oil well screen pipe and unfreezing method |
| CN110836109A (en) * | 2019-12-18 | 2020-02-25 | 新疆恒智伟业石油工程技术开发有限公司 | Open hole segmented acid fracturing easy drilling and grinding well completion production string and working method thereof |
| CN111088973B (en) * | 2020-01-10 | 2023-07-07 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing completion pipe string and process for high-temperature high-pressure oil-gas well |
| CN214576929U (en) * | 2020-12-15 | 2021-11-02 | 安东石油技术（集团）有限公司 | Temporary plugging sieve tube |
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| CN112554851A (en) | 2021-03-26 |
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