CN113586017B - Integrated pipe column suitable for perforation and sand prevention of volcanic reservoir and use method - Google Patents
Integrated pipe column suitable for perforation and sand prevention of volcanic reservoir and use method Download PDFInfo
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- CN113586017B CN113586017B CN202111013545.2A CN202111013545A CN113586017B CN 113586017 B CN113586017 B CN 113586017B CN 202111013545 A CN202111013545 A CN 202111013545A CN 113586017 B CN113586017 B CN 113586017B
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- oil pipe
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention discloses an integrated pipe column suitable for volcanic reservoir perforation and sand prevention and a use method thereof, wherein the pipe column comprises a first oil pipe, a second oil pipe, an expansion joint, a third oil pipe, a permanent well completion packer, a fourth oil pipe, a sand prevention screen pipe, a perforating gun group and a ball receiving seat arranged in the sand prevention screen pipe, which are sequentially connected, and the expansion joint is in a stretching state when entering a well and is used for compensating the length reduction of the pipe column; the ball receiving seat arranged in the sand control screen pipe can slide downwards along the inner cavity of the sand control screen pipe. According to the invention, one-pass tubular column perforation, reservoir transformation, sand prevention and well completion operation are realized, the construction is simplified, and the construction efficiency is improved; after perforation operation is completed, flowback of well killing liquid is timely carried out through a tubular column structure, so that pollution of a volcanic reservoir is avoided; the sand control treatment of the flowback substances is realized through the sand control screen pipe, and the flowback substances are prevented from blocking the pipe column; meanwhile, the releasing device is used for releasing the perforating gun group to drop the well, so that the problem of shaft burial caused by sand discharge of a perforating section and bridging of the perforating gun group is avoided.
Description
Technical Field
The invention relates to the technical field of downhole operation tools of petroleum wells, in particular to an integrated tubular column suitable for perforation and sand prevention of a volcanic reservoir and a use method.
Background
Recently, great findings of natural gas in volcanic rock are obtained in Sichuan basin, and the natural gas resource distribution area is about 6000km 2 The phenomenon that the sand is produced on the stratum and the flowback substances are pasty to block the pipe column occurs in the natural gas exploitation process; meanwhile, the core indoor experiment shows that each sensitivity of the stratum is strong, the well wall is easy to collapse, and the aims of sand prevention and reservoir protection cannot be achieved by using a conventional tubular column structure and a conventional well completion process.
A comparison document Sun Xiaogang clamei seven day volcanic gas reservoir development subject technology [ J ]. Natural gas industry, 2010 (02); fan Tianchao, wang Zhijiang, etc. the technique of volcanic completion in three-pond lake oil field [ J ]. Petroleum geology and engineering, 2011, (S1); li Jun the well completion and production and reservoir protection technology of the volcanic reservoir [ J ]. Special oil and gas reservoirs, 2012, (04) respectively explore and study on various domestic volcanic reservoir well completion processes, but the situation similar to the sand production of the volcanic reservoir of the Sichuan basin is not shown, and the well completion operation of the volcanic reservoir of the Sichuan basin cannot be completed effectively by adopting a conventional pipe column structure and a conventional well completion process.
Disclosure of Invention
The invention aims to provide a well completion operation of a Sichuan basin volcanic reservoir, which is suitable for perforation and sand prevention of the volcanic reservoir and a use method, and can realize perforation, reservoir transformation, sand prevention and well completion operation of the Sichuan basin volcanic reservoir by one-pass pipe through a simple pipe column structure and a use method, and simultaneously can avoid pollution of the volcanic reservoir and reduce the possibility of sand burying of the pipe column.
The invention is realized by the following technical scheme:
the utility model provides a be applicable to volcanic reservoir perforation, sand control integration tubular column, includes first oil pipe, second oil pipe, expansion joint, third oil pipe, permanent completion packer, fourth oil pipe, sand control screen pipe, perforation rifle group and the ball receiving ball seat that sets up in sand control screen pipe that connects gradually, expansion joint is tensile state when going into the well, is used for compensating tubular column length reduction;
the ball receiving seat arranged in the sand control screen pipe can slide downwards along the inner cavity of the sand control screen pipe. The invention realizes the perforation, reservoir transformation, sand prevention and well completion operation of the Sichuan basin volcanic reservoir by providing the simple integrated pipe column suitable for perforation and sand prevention of the volcanic reservoir, thereby simplifying construction and improving construction efficiency; after perforation operation is completed, flowback of well killing liquid is timely carried out through a tubular column structure, so that pollution of a volcanic reservoir is avoided; the sand control treatment of the flowback substances is realized through the sand control screen pipe, so that the flowback substances are prevented from being pasty to block the pipe column; meanwhile, the releasing device on the perforating gun group is used for releasing and dropping the perforating gun group, so that the problem of shaft burial caused by sand discharge of a perforating section and bridging of the perforating gun group is avoided.
The technical scheme is as follows:
the diameters of the first oil pipe and the third oil pipe are larger than those of the second oil pipe, and the first oil pipe, the second oil pipe and the third oil pipe form a dumbbell-shaped structure;
the third oil pipe is a thickened oil pipe with the thickness of 9-14 mm, and the length of the third oil pipe is matched with the effective suspension weight required to be applied on the permanent well completion packer.
Further: when the ball receiving ball seat is internally matched with a steel ball and the force value of the ball receiving ball seat, which is prevented from moving downwards, is larger than the pressure value of the ball receiving ball seat, the ball receiving ball seat is positioned between the fourth oil pipe and the sand control screen pipe;
further: when the ball receiving ball seat is internally matched with a steel ball, and the force value of the ball receiving ball seat, which is prevented from moving downwards, is smaller than the pressure value born by the ball receiving ball seat, the ball receiving ball seat slides downwards to the bottom of the sand control screen.
Further: the fourth oil pipe and the sand control screen pipe are thickened oil pipes which are made of high-strength steel and have the thickness of 9-14 mm, and the length of the fourth oil pipe is not less than 50m.
Further: the perforating gun set is connected with the bottom end of the sand control screen pipe, and the bottom end of the sand control screen pipe is in a blocking state.
Further: and a releasing device is arranged on the perforating gun group.
A method of using the integrated string suitable for volcanic reservoir perforation, modification, sand control, comprising the steps of:
step one: a pipe column enters a well, and when clear water or low-density oil testing working environment is adopted in a shaft, the integrated pipe column suitable for perforation, transformation and sand prevention of a volcanic reservoir is lowered to a preset position and is calibrated deeply;
step two: the well bore is sealed, the permanent well completion packer is pressed and abutted in the well bore, and sealing of the annular space of the well bore is achieved;
step three: perforating and releasing, namely activating a perforating gun set to carry out perforation operation, and carrying out releasing operation after perforation is completed;
step four: flowback of well killing liquid, after perforation is completed, the well killing liquid passes through sand screening of a sand control screen pipe and then timely flowback is carried out through a pipe column;
step five: completion and put into production. The method for using the integrated pipe column suitable for perforation, transformation and sand prevention of the volcanic reservoir, provided by the invention, can realize perforation, reservoir transformation, sand prevention and well completion operations of the volcanic reservoir of the Sichuan basin by one pipe column; the well killing liquid flowback process can avoid the pollution of the volcanic rock reservoir; the perforation and releasing process can avoid the problem of shaft burial caused by sand discharge of a perforation section and bridging of a perforation gun set while realizing well completion work.
The method comprises the following steps:
the specific operation method of the second step is as follows: after the pipe column is lowered in place and is calibrated deeply, a steel ball is thrown into the pipe column to a ball receiving ball seat, after the steel ball is matched with the ball receiving ball seat, the fourth oil pipe is not communicated with the sand control screen pipe, then a permanent well completion packer is pressurized, and the permanent well completion packer is pressurized and abutted in a shaft, so that the sealing of the annular space of the shaft is realized, and the sealing effect of the annular space of the shaft is checked;
the specific operation steps of the third step are as follows: and after the sealing of the annular space of the well bore by the permanent well completion packer is finished, continuing to pressurize the tubular column until the downward pressure value of the ball receiving seat is larger than the downward movement force of the ball receiving seat, sliding the ball receiving seat downwards to the bottom of the sand control screen pipe, and triggering the perforating gun group to perform perforation operation, and after the perforation operation is finished, enabling the releasing device to activate to realize releasing operation of the perforating gun group.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the integrated pipe column suitable for perforation and sand prevention of the volcanic reservoir and the use method thereof can realize perforation, reservoir transformation, sand prevention and completion operation of the volcanic reservoir of the Sichuan basin by one pipe column through a simple pipe column structure and the use method, simplify construction, improve construction efficiency and effectively protect the volcanic reservoir;
2. the invention relates to an integrated pipe column suitable for perforation and sand prevention of a volcanic reservoir and a use method thereof, wherein flowback of well control fluid is timely carried out through a pipe column structure after perforation operation is completed, so that pollution of the volcanic reservoir is avoided;
3. according to the integrated tubular column suitable for perforation and sand prevention of the volcanic reservoir and the use method, the release well dropping of the perforating gun set is realized through the release device on the perforating gun set, and the problem of shaft burial caused by sand discharge of a perforating section and bridging of the perforating gun set is avoided;
4. the invention relates to a perforation and sand prevention integrated tubular column for a volcanic reservoir and a use method thereof, which are used for realizing sand prevention treatment on flowback substances through a sand prevention screen pipe and avoiding the flowback substances from being pasty to block the tubular column;
5. the invention relates to an integrated string suitable for perforation and sand prevention of a volcanic reservoir and a use method thereof, wherein an expansion joint can be used for compensating the shortening amount of the string during reservoir transformation, and the suspension weight of the lower string can be effectively applied to a permanent completion packer, so that the effective sealing of the permanent completion packer in the transformation process is ensured.
6. According to the integrated tubular column suitable for perforation and sand prevention of the volcanic reservoir and the use method, the first oil pipe, the second oil pipe and the third oil pipe form a dumbbell-shaped structure, and the third oil pipe adopts a thickened oil pipe, so that the weight of the integrated tubular column can be effectively applied to the permanent well completion packer to meet the suspension weight requirement, the effective sealing of the permanent well completion packer in the reconstruction process is ensured, and the problem of sleeve channeling caused by the failure of the packer in the reconstruction process can be effectively reduced;
7. the invention relates to an integrated pipe column suitable for volcanic reservoir perforation and sand prevention and a use method thereof, wherein a fourth oil pipe and a sand prevention screen pipe are both made of high-strength steel, and the influence of a higher perforation detonation effect can be resisted, so that the problem of oil pipe fracture is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention.
In the drawings, the reference numerals and corresponding part names:
1-first oil pipe, 2-second oil pipe, 3-expansion joint, 4-third oil pipe, 5-permanent completion packer, 6-fourth oil pipe, 7-ball receiving seat, 8-sand control screen pipe, 9-perforating gun group.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the invention.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
Examples
As shown in FIG. 1, the integrated string suitable for volcanic reservoir perforation and sand prevention comprises a first oil pipe 1, a second oil pipe 2, an expansion joint 3, a third oil pipe 4, a permanent well completion packer 5, a fourth oil pipe 6, a sand prevention screen pipe 8, a perforating gun set 9 and a ball receiving ball seat 7 arranged in the sand prevention screen pipe 8, which are sequentially connected, wherein the expansion joint 3 is in a stretching state when entering a well and is used for compensating the length reduction of the string; in the embodiment, perforation, reservoir transformation, sand prevention and well completion operations of the volcanic reservoir of the Sichuan basin are completed by realizing one-pass pipe column, so that construction is simplified and construction efficiency is improved; after perforation operation is completed, flowback of well killing liquid is timely carried out through a tubular column structure, so that pollution of a volcanic reservoir is avoided; the sand control treatment of the flowback substances is realized through the sand control screen pipe 8, so that the flowback substances are prevented from being pasty to block the pipe column; the expansion joint 3 can be used for compensating the shortening amount of the pipe column during reservoir reconstruction, and ensures that the hanging weight of the lower pipe column can be effectively applied to the permanent well completion packer, thereby ensuring the effective sealing of the permanent well completion packer in the reconstruction process.
The ball receiving seat 7 arranged in the sand control screen 8 can slide downwards along the inner cavity of the sand control screen 8. In this embodiment, when the ball receiving seat 7 is located between the fourth oil pipe 6 and the sand control screen 8, the fourth oil pipe 6 is not communicated with the sand control screen, and when the pressure is increased from the top of the tubular column to the inside of the tubular column, the permanent completion packer 5 is pressurized and abutted in the wellbore, so as to realize the sealing of the annular space of the wellbore; when the ball receiving seat 7 slides to the bottom of the sand control screen pipe 8, the fourth oil pipe 6 is communicated with the sand control screen pipe, and after perforation operation is completed, flowback of well control fluid can be carried out through the pipe column, so that pollution of a volcanic reservoir is avoided.
The diameters of the first oil pipe 1 and the third oil pipe 4 are larger than the diameter of the second oil pipe 2, and the first oil pipe 1, the second oil pipe 2 and the third oil pipe 4 form a dumbbell-shaped structure; in this embodiment, the first oil pipe 1, the second oil pipe 2 and the third oil pipe 4 form a dumbbell structure, so that the weight of the dumbbell structure can be ensured to be effectively applied to the permanent well completion packer 5 to meet the suspension weight requirement of the dumbbell structure, and therefore effective sealing of the permanent well completion packer 5 in the transformation process is ensured, and compared with the existing perforation and transformation test pipe column, the problem of sleeve channeling caused by the failure of the packer in the transformation process can be effectively reduced.
The third oil pipe 4 is a thickened oil pipe with the thickness of 9-14 mm, and the length of the third oil pipe 4 is matched with the effective suspension weight required to be applied on the permanent well completion packer 5. In this embodiment, the third oil pipe 4 is a thickened oil pipe, which has better bending resistance, and can ensure that the suspension weight of the oil pipe on the permanent completion packer 5 is effectively applied on the thickened oil pipe, so as to ensure the sealing effect of the permanent completion packer 5.
When a steel ball is matched in the ball receiving ball seat 7, and the force value of the ball receiving ball seat 7 which is blocked from moving downwards is larger than the pressure value of the ball receiving ball seat 7, the ball receiving ball seat 7 is positioned between the fourth oil pipe 6 and the sand control screen 8; in this embodiment, the ball receiving seat 7 is matched with a steel ball to separate the fourth oil pipe 6 from the sand control screen 8 and move downwards; when the ball receiving seat 7 is arranged, a force for preventing the ball receiving seat 7 from moving downwards is generated between the sand control screen 8, and the force for preventing the ball receiving seat from moving downwards is larger than a downward pressure value born by the ball receiving seat 7 when the permanent well completion packer 5 performs pressurizing and packing, and the ball receiving seat 7 is positioned between the fourth oil pipe 6 and the sand control screen 8, so that the permanent well completion packer 5 can perform pressurizing and packing; in this embodiment, the pin is preferably used to fix the ball receiving seat 7 between the fourth oil pipe 6 and the sand control screen 8, the pin provides a force for preventing the ball receiving seat 7 from moving downwards, and the downward pressure value of the ball receiving seat 7 when the pin is cut is larger than the downward pressure value of the ball receiving seat 7 when the permanent well completion packer 5 is pressurized and sealed.
When the ball receiving ball seat 7 is internally matched with a steel ball, and the force value of the ball receiving ball seat 7 which is blocked from moving downwards is smaller than the pressure value of the ball receiving ball seat 7, the ball receiving ball seat 7 slides downwards to the bottom of the sand control screen 8. In this embodiment, after the pressurization and packing of the permanent completion packer 5 are completed, the pressure continues to be applied to the inside of the tubular column, when the downward pressure applied to the ball receiving ball seat 7 is greater than the downward movement force of the ball receiving ball seat 7, the ball receiving ball seat 7 slides down to the bottom of the sand control screen 8, at this time, the fourth oil pipe 6 is communicated with the sand control screen 8, and well killing fluid and the like can flow back through the tubular column, and meanwhile, the perforating gun set 9 can be excited to perform perforation operation only after the ball receiving ball seat 7 falls to the bottom of the sand control screen 8.
The fourth oil pipe 6 and the sand control screen pipe 8 are thickened oil pipes which are made of high-strength steel and have the thickness of 9 mm-14 mm, and the length of the fourth oil pipe 6 is not less than 50m. In this embodiment, the fourth oil pipe 6 and the sand control screen 8 are manufactured by using thickened oil pipes, so that damage or breakage of the fourth oil pipe 6 or the sand control screen 8 due to impact force generated by perforation detonation can be avoided.
The perforating gun group 9 is connected with the bottom end of the sand control screen pipe 8, and the bottom end of the sand control screen pipe 8 is in a blocking state. In this embodiment, the bottom of the sand control screen 8 is in a plugging state, so that fluids in a production layer after completion of a well are ensured to enter a wellbore from a sand control section of the sand control screen 8, and the sand control effect is ensured.
And a releasing device is arranged on the perforating gun group 9. In the embodiment, when the releasing device works after perforation operation is finished, the perforating gun group 9 releases and falls into the well, so that the possibility of burying a pipe column caused by sand production of a perforating section shaft is reduced.
Example 2:
as shown in fig. 1, a method for using the integrated string suitable for perforation and sand prevention of a volcanic reservoir comprises the following steps:
step one: a pipe column enters a well, and when clear water or low-density oil testing working environment is adopted in a shaft, the integrated pipe column suitable for perforation, transformation and sand prevention of a volcanic reservoir is lowered to a preset position and is calibrated deeply;
step two: the well bore is sealed, the permanent well completion packer 5 is pressed and abutted in the well bore, and sealing of the annular space of the well bore is achieved;
step three: perforating and releasing, namely activating a perforating gun set 9 to carry out perforation operation, and carrying out releasing operation after perforation is completed;
step four: flowback of well killing liquid, after perforation is completed, the well killing liquid passes through sand screening of a sand control screen pipe 8 and then is timely flowback through a pipe column;
step five: completion and put into production. In the embodiment, the integrated pipe column suitable for perforation and sand prevention of the volcanic reservoir is used by the method, so that the processes of perforation, transformation, sand prevention, well completion and the like of one pipe column can be realized, and the pollution of the volcanic reservoir can be avoided by the well control fluid flowback process; the perforation and releasing process can avoid the problem of shaft burial caused by sand discharge of a perforation section and bridging of a perforation gun set while realizing well completion work. Compared with the traditional process, the method is simple to operate, and can effectively realize perforation, reservoir transformation, sand prevention and well completion operations of the Sichuan basin volcanic reservoir.
The specific operation method of the second step in this embodiment is as follows:
after the pipe column is lowered in place and is calibrated deeply, a steel ball is thrown into the pipe column to a ball receiving ball seat 7, after the steel ball is matched with the ball receiving ball seat 7, the fourth oil pipe 6 is not communicated with the sand control screen 8, then the permanent well completion packer 5 is pressurized, the permanent well completion packer 5 is pressurized and abutted in a shaft, sealing of the annular space of the shaft is achieved, and the sealing effect of the annular space of the shaft is checked;
the specific operation steps of the third step are as follows:
and after the permanent well completion packer 5 seals the annular space of the well bore, continuing to pressurize the tubular column until the downward pressure value of the ball receiving seat 7 is larger than the downward movement force of the ball receiving seat, sliding the ball receiving seat 7 downwards to the bottom of the sand control screen 8, and triggering the perforating gun set to perform perforation operation, and after the perforation operation is completed, enabling the releasing device to activate the releasing operation of the perforating gun set.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The utility model provides a be applicable to volcanic reservoir perforation, sand control integration tubular column, its characterized in that includes first oil pipe (1), second oil pipe (2), expansion joint (3), third oil pipe (4), permanent completion packer (5), fourth oil pipe (6), sand control screen pipe (8), perforation rifle group (9) and set up in ball seat (7) of catching in sand control screen pipe (8) that connect gradually, expansion joint (3) are tensile state when going into the well for compensate tubular column length reduction;
the ball receiving ball seat (7) arranged in the sand control screen (8) can slide downwards along the inner cavity of the sand control screen (8);
the diameters of the first oil pipe (1) and the third oil pipe (4) are larger than the diameter of the second oil pipe (2), and the first oil pipe (1), the second oil pipe (2) and the third oil pipe (4) form a dumbbell-shaped structure;
the third oil pipe (4) is a thickened oil pipe with the thickness of 9-14 mm, and the length of the third oil pipe (4) is matched with the effective suspension weight required to be applied on the permanent well completion packer (5).
2. The integrated string for perforation and sand control of a volcanic reservoir according to claim 1, wherein when a steel ball is fitted in the ball receiving ball seat (7) and the force value of the ball receiving ball seat (7) which is blocked from moving downwards is larger than the pressure value of the ball receiving ball seat (7), the ball receiving ball seat (7) is positioned between the fourth oil pipe (6) and a sand control screen (8);
when the ball receiving ball seat (7) is internally matched with a steel ball, and the force value of the ball receiving ball seat (7) which is blocked from moving downwards is smaller than the pressure value of the ball receiving ball seat (7), the ball receiving ball seat (7) slides downwards to the bottom of the sand control screen pipe (8).
3. The integrated string for perforation and sand prevention of volcanic reservoir according to claim 1, wherein the fourth oil pipe (6) and the sand prevention screen (8) are thickened oil pipes made of high-strength steel and having a thickness of 9-14 mm, and the length of the fourth oil pipe (6) is not less than 50m.
4. The integrated string for perforation and sand prevention of a volcanic reservoir according to claim 1, wherein the perforating gun set (9) is connected with the bottom end of the sand control screen (8), and the bottom end of the sand control screen (8) is in a blocking state.
5. The integrated string for perforation and sand prevention of a volcanic reservoir according to claim 1, wherein a releasing device is arranged on the perforating gun set (9).
6. The use method of the integrated string suitable for perforation and sand prevention of the volcanic reservoir according to any one of claims 1 to 5 is characterized by comprising the following steps:
step one: a pipe column enters a well, and when clear water or low-density oil testing working fluid environment exists in a well shaft, the integrated pipe column suitable for perforation and sand prevention of a volcanic reservoir is lowered to a preset position and is calibrated deeply;
step two: the well bore is sealed, the permanent well completion packer (5) is pressed and abutted in the well bore, and sealing of the annular space of the well bore is achieved;
step three: perforating and releasing, namely activating a perforating gun set (9) to carry out perforation operation, and carrying out releasing operation after perforation is completed;
step four: flowback of well killing liquid, after perforation is completed, the well killing liquid passes through sand screening of a sand control screen (8) and then is timely flowback through a pipe column;
step five: completion and put into production.
7. The method of claim 6, wherein the specific operation of step two is as follows:
after the pipe column is lowered in place and is calibrated deeply, a steel ball is thrown into the pipe column to a ball receiving ball seat (7), after the steel ball is matched with the ball receiving ball seat (7), the fourth oil pipe (6) is not communicated with the sand control screen pipe (8), then the permanent well completion packer (5) is pressurized, the permanent well completion packer (5) is pressurized and abutted in a shaft, sealing of the annular space of the shaft is achieved, and the sealing effect of the annular space of the shaft is tested;
the specific operation steps of the third step are as follows:
and after the permanent well completion packer (5) completes sealing the annular space of the well bore, continuing to pressurize the tubular column until the downward pressure value of the ball receiving seat (7) is larger than the downward movement force of the ball receiving seat, wherein the ball receiving seat (7) slides downwards to the bottom of the sand control screen pipe (8) and triggers the perforating gun group to perform perforation operation, and after the perforation operation is completed, the releasing device is activated to realize releasing operation of the perforating gun group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111013545.2A CN113586017B (en) | 2021-08-31 | 2021-08-31 | Integrated pipe column suitable for perforation and sand prevention of volcanic reservoir and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111013545.2A CN113586017B (en) | 2021-08-31 | 2021-08-31 | Integrated pipe column suitable for perforation and sand prevention of volcanic reservoir and use method |
Publications (2)
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