CN220485608U - Double-density guide type plugging granular material - Google Patents
Double-density guide type plugging granular material Download PDFInfo
- Publication number
- CN220485608U CN220485608U CN202321408308.0U CN202321408308U CN220485608U CN 220485608 U CN220485608 U CN 220485608U CN 202321408308 U CN202321408308 U CN 202321408308U CN 220485608 U CN220485608 U CN 220485608U
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- plugging
- guide
- particles
- density
- guiding
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- 239000008187 granular material Substances 0.000 title description 2
- 239000002245 particle Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims description 12
- 230000004323 axial length Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 2
- 239000011236 particulate material Substances 0.000 claims 5
- 239000000155 melt Substances 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000012768 molten material Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
- 239000010428 baryte Substances 0.000 description 3
- 229910052601 baryte Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model relates to a double-density guide type plugging particle material in the technical field of well drilling plugging, which comprises a guide end and a plugging end, wherein the whole of the guide end and the plugging end is of a conical structure, the guide end is positioned at the conical top of the conical structure, and the density of the guide end is greater than that of the plugging end. The double-density guiding type plugging particles are respectively designed into the guiding end and the plugging end with conical structures, the density of the guiding end is larger than that of the plugging end, so that the gravity center of the plugging particles is positioned at the guiding end of the conical roof, when the plugging particles are pumped to a crack along with plugging slurry, the guiding end always faces the streamline direction, the guiding end of the plugging particles firstly enters the crack part and is wedged into the crack under the action of pressure, and the adaptability of the plugging particles to the size of the crack is improved by utilizing the characteristics and deformability of the conical structures of the guiding end and the plugging end, the success of primary plugging is improved, and the occurrence of repeated well leakage is avoided.
Description
Technical Field
The utility model relates to the technical field of well drilling plugging, in particular to a double-density guide type plugging particle material for coping with stratum crack leakage in a well drilling process.
Background
The crack leakage is a common and complex leakage form in the drilling process, and the problems of low once success rate of leakage stoppage, repeated occurrence of well leakage after leakage stoppage and the like still prevent the smooth progress of drilling operation. One main reason is the lack of accurate information on the width of the seam of the leak, and the width of the seam of the leak at different positions is different, complex and changeable. That is, for most cases of fracture loss, there are often multiple fractures of varying widths downhole. However, the conventional technical means at present does not accurately predict the width of the crack of the leakage layer, so that the particle size selection of the bridging particle for plugging cannot be completely matched with the width of the crack, and bridging particles are difficult to enter the crack or flow into the crack, so that a door is sealed or bridging effect is not achieved, and the plugging failure is caused.
Traditional bridging plugging particles (mineral particles, mica sheets, fiber particles and the like) have strong sensitivity to the width of the crack, and cannot be self-adaptively and effectively bridged and plugged to the crack. The intelligent plugging agent is prepared into small-volume flaky shape memory plugging agent at normal temperature, and is conveyed to a leakage layer along with drilling fluid, and after the leakage layer is activated by means of temperature, the shape returns to an original blocky three-dimensional structure, and the intelligent plugging agent can be adaptively bridged and plugged in a certain range, but the manufacturing process is complex, flaky particles are not easy to enter cracks and are limited by the activation temperature of the particles.
Therefore, it is necessary to develop a plugging particle which is adaptive to bridge a crack and has a simple process, so as to realize efficient plugging of a fractured leakage stratum.
Disclosure of Invention
Aiming at the problem that the prior art crack plugging agent is difficult to adapt to the requirements of complex and changeable plugging of the crack of the leakage layer, the utility model provides a double-density guiding type plugging particle material, so as to solve the problems of difficult selection of bridging plugging particle size and poor self-adaptation to the crack.
The utility model aims to realize the double-density guide type plugging particle material, which comprises a guide end and a plugging end, wherein the whole of the guide end and the plugging end is of a conical structure, the guide end is positioned at the conical top of the conical structure, and the density of the guide end is higher than that of the plugging end.
The double-density guide type plugging particle material is designed into a guide end and a plugging end respectively, the density of the guide end of the conical structure is larger than that of the plugging end, so that the gravity center of plugging particles is positioned at the guide end of the conical top, when the plugging particles are pumped to a crack part along with plugging slurry, the guide end always faces the streamline direction, the guide end firstly enters the crack and is wedged into the crack under the action of pressure, and the adaptability of the plugging particles to the size of the crack is increased by utilizing the difference of the conical structure sizes of the guide end and the plugging end, thereby being suitable for complex and changeable crack plugging, improving the success of primary plugging and avoiding the occurrence of repeated well leakage.
Further, the whole guiding type plugging particles are conical or polygonal.
In order to meet the high-temperature and high-pressure plugging requirements of the stratum conveniently, the guide end is a thermoplastic particle or a gel particle added with a weighting agent.
To facilitate adaptation to changes in formation temperature and pressure to accommodate plastic deformation, the lost circulation tip is a thermoplastic resin or gel pellet or an aerated thermoplastic resin or gel pellet.
Further, the axial length of the guide end is 20% -25% of the whole axial length.
Further, the taper of the top of the guide end is 20 ︒ -30 ︒.
Further, the weighting agent is barite or iron ore fines.
Further, the particles of the integral conical structure of the guide end and the plugging end are prepared by layering, pouring and molding through a die.
Further, the particles of the integral conical structures of the guide end and the plugging end are manufactured by layering, tiling and cooling, cutting and molding the melted materials.
In summary, compared with the prior art, the dual-density guiding type plugging particles have the beneficial effects that: 1) The double-density guide type plugging particles are provided with guide ends and plugging ends, the wedge-shaped structure is adopted, the density of the guide ends is higher than that of the plugging ends, the gravity centers of the plugging particles are positioned at the guide ends, the guide ends always face the streamline direction in the pumping process of the plugging slurry, so that the guide ends firstly enter the cracks, the plugging ends are wedged into the cracks, and the adaptability of the plugging particles to the sizes of the cracks is improved by utilizing the difference between the sizes of the guide ends and the plugging ends; 2) The plugging particles have good thermoplasticity and high-temperature adaptability, can adapt to the high-temperature property of the plugging layer, strengthen the strength of the plugging layer, prevent reverse drainage and avoid repeated leakage; 3) The plugging particles are prepared from thermoplastic resin or gel and other particles, have high temperature resistance, and can be suitable for plugging high-temperature stratum.
Drawings
FIG. 1 is a schematic structural view of a dual density guiding plugging particle according to the present utility model.
Fig. 2 is a schematic diagram of the dual-density guiding plugging particles of the present utility model formed by cutting and shaping by layering and tiling the melted materials.
Fig. 3 is a schematic diagram of a dual density guide type plugging particle of the present utility model formed by layered infusion molding using a mold.
Wherein, 1 a guiding end; 2, plugging the leaking end; 3 a multi-cavity mold; 4 horizontal bottom plate.
Detailed Description
Example 1
As shown in fig. 1, the dual-density guiding type plugging particles comprise a guiding end 1 and a plugging end 2, wherein the guiding end 1 and the plugging end 2 are integrally in a conical structure, the guiding end 1 is positioned at the conical top of the conical structure, the particle density of the guiding end 1 is larger than that of the plugging end 2, so that the guiding end 1 with the gravity center of the plugging particles positioned at the conical top can be realized, when the plugging particles are pumped to a crack part along with a plugging paddle, the guiding end 1 always faces the streamline direction, firstly enters the crack part, the plugging end 2 is wedged into the crack under the action of pressure, and the adaptability of the plugging particles to the crack size is increased by utilizing the difference of the conical structure sizes of the guiding end 1 and the plugging end 2, thereby adapting to complex and changeable crack plugging, improving the success of primary plugging and avoiding repeated occurrence of lost circulation.
In the embodiment, the whole of the guide end 1 and the plugging end 2 after being connected is conical or polygonal; in order to be convenient for adapting to the plugging construction requirements of different stratum, the guide end 1 is a thermoplastic particle or a gel particle added with a weighting agent, and the weighting agent can be barite or iron ore powder which is added according to the proportion as required when preparing the mixture, so that the density of the guide end is improved; to further accommodate formation temperature and pressure changes to accommodate plastic deformation, the lost circulation tip 2 is a thermoplastic resin or gel pellet or an aerated thermoplastic resin or gel pellet.
In order to facilitate the smooth pumping and guiding of the plugging particles to the crack position, the axial length of the guide end 1 is 20% -25% of the whole axial length, and the taper of the top of the guide end 1 is 20 ︒ -30 ︒.
Example 2
The dual density guided plugging particles of example 1 can be manufactured by: as shown in fig. 2, through a specific multi-cavity mold 3, the molten materials with corresponding components are layered and poured into each cavity, a plurality of particles with an integral conical structure of a guide end 1 and a plugging end 2 can be manufactured by layered and poured into the multi-cavity mold 3 for one-step molding, the specific method is that the molten materials for pouring the guide end 1 and the plugging end 2 are respectively prepared, according to the density difference requirement of the guide end 1 and the plugging end 2, barite or iron ore powder with proper weight proportion is added into the molten materials of the guide end 1 as a weighting agent, after uniform mixing, the molten materials of the guide end with corresponding high material are poured into the cone dust end at the lower part of each cavity, then the molten materials of the plugging end 2 of an upper layer are added, and according to the density requirement, a certain volume of air is mixed into the molten materials of the plugging end 2, so that a certain amount of bubbles are uniformly mixed in the molten materials, and after pouring, cooling and vibration demoulding are carried out, so that the manufacturing of the plugging particles with one mold is completed.
Example 3
As shown in fig. 3, the dual density guided plugging particles of example 1 were manufactured by the following method: firstly, according to the density requirements of a guide end 1 and a plugging end 2, respectively preparing a guide end melting material and a plugging end melting material by means of a simple die cavity with a horizontal bottom plate 4, then firstly spreading the melting materials with the thickness corresponding to the guide end layer on the horizontal bottom plate, continuously spreading the melting materials with the thickness corresponding to the plugging end layer on the upper layer after cooling, demoulding into an integral block after cooling, and then cutting and forming to obtain a plurality of plugging particles with required sizes.
Claims (6)
1. The double-density guide type plugging particle material is characterized by comprising a guide end and a plugging end, wherein the whole of the guide end and the plugging end is of a conical structure, the guide end is positioned at the conical top of the conical structure, and the density of the guide end is greater than that of the plugging end.
2. The dual density guided plugging particulate material of claim 1, wherein the guide end and the plugging end are generally conical or polygonal.
3. The dual density guided plugging particulate material of claim 1, wherein the axial length of the guide end is 20% -25% of the overall axial length.
4. The dual density guided plugging particulate material of claim 1, wherein the taper at the top of the guide end is 20 ︒ to 30 ︒.
5. The dual density guided plugging particulate material of any one of claims 1-4, wherein the particles of the overall tapered structure of the guide end and the plugging end are made by die layerwise infusion molding.
6. The dual density guidance plugging particulate material of any of claims 1-4, wherein the particles of the overall conical structure of the guidance end and plugging end are formed by layering and tiling the melt and then cooling and cutting the melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321408308.0U CN220485608U (en) | 2023-06-05 | 2023-06-05 | Double-density guide type plugging granular material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321408308.0U CN220485608U (en) | 2023-06-05 | 2023-06-05 | Double-density guide type plugging granular material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220485608U true CN220485608U (en) | 2024-02-13 |
Family
ID=89831320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321408308.0U Active CN220485608U (en) | 2023-06-05 | 2023-06-05 | Double-density guide type plugging granular material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220485608U (en) |
-
2023
- 2023-06-05 CN CN202321408308.0U patent/CN220485608U/en active Active
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