CN114458292B - High-temperature deep well logging-while-drilling drill collar containing phase-change material and use method thereof - Google Patents
High-temperature deep well logging-while-drilling drill collar containing phase-change material and use method thereof Download PDFInfo
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- CN114458292B CN114458292B CN202210087672.5A CN202210087672A CN114458292B CN 114458292 B CN114458292 B CN 114458292B CN 202210087672 A CN202210087672 A CN 202210087672A CN 114458292 B CN114458292 B CN 114458292B
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- phase change
- logging instrument
- logging
- change material
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- 239000012782 phase change material Substances 0.000 title claims abstract description 45
- 238000005553 drilling Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 2
- 230000001012 protector Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
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- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
- E21B47/0175—Cooling arrangements
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a high-temperature deep well logging-while-drilling drill collar containing a phase change material, which comprises a logging instrument main body and a phase change logging instrument protection device, wherein the phase change logging instrument protection device is sleeved outside the logging instrument main body and is matched with the logging instrument main body. The invention is mainly characterized in that the local normal temperature environment of the internal logging instrument is kept for a long time under the high temperature environment, the logging instrument unit is protected from the high temperature environment, the quick connection, the disassembly and the assembly can be realized, the use efficiency is improved, the whole equipment can be recycled, and the like.
Description
Technical Field
The invention belongs to the technical field of logging while drilling equipment, and relates to a high-temperature deep well logging while drilling drill collar containing a phase-change material and a use method thereof.
Background
Logging while drilling can measure stratum information in real time while drilling a bottom layer, and downhole instrument units for logging while drilling are all arranged in a drill collar and can measure parameters such as well deviation, well deviation azimuth, downhole torque, drill bit bearing, natural gamma, resistivity and the like. However, in the drilling and measuring process of deep wells and ultra-deep wells (3000 m-6000 m), the downhole instrument units for logging while drilling are easily affected by the downhole high-temperature environment due to the fact that the downhole temperature increases (about 0.03 ℃/m) along with the increase of drilling depth, so that the service efficiency and service life of the downhole instrument are seriously affected.
Disclosure of Invention
Aiming at the problems, the invention provides a high-temperature deep well logging-while-drilling drill collar containing a phase-change material and a use method thereof, which are used for logging while drilling, are suitable for high-temperature environments encountered in the deep well and ultra-deep well logging process, and can effectively protect downhole instrument units of logging while drilling.
In order to achieve the technical purpose of the invention, the invention adopts the following technical scheme:
the invention provides a high-temperature deep well logging-while-drilling drill collar containing a phase change material, which comprises a logging instrument main body and a phase change logging instrument protection device, wherein the phase change logging instrument protection device is sleeved outside the logging instrument main body and is matched with the logging instrument main body, and the phase change logging instrument protection device comprises a phase change material, a phase change material and a phase change material, wherein the phase change material is formed by the phase change material, the phase change material and the phase change material, wherein the phase change material is formed by the phase change material:
the phase change logging instrument protection device comprises a shell, wherein the top of the shell is provided with internal threads, the bottom of the shell is provided with a clamping groove, and a sealing ring is embedded in the clamping groove; the inside of the shell is provided with a corrugated pipe cavity for containing phase change materials, the inner side of the corrugated pipe cavity is provided with a straight pipe wall, the outer side of the corrugated pipe cavity is provided with a corrugated pipe wall, and an annulus is arranged between the corrugated pipe wall and the shell;
the logging instrument top-down is provided with top screw thread, upper portion screw thread, downhole instrument unit, lower part step and bottom screw thread, the top screw thread is used for being connected with upper portion drilling rod, upper portion screw thread be used for with the internal thread connection at casing top, the lower part step be used for with the bottom sealing connection of casing, the bottom screw thread be used for being connected with lower part drilling rod.
Preferably, the top of the case is provided with a PCM injection hole for injecting a phase change material into the bellows chamber.
More preferably, the PCM injection holes are two and symmetrically disposed at both sides of the center line of the case.
Preferably, the phase change material has a phase change temperature of 50-70 ℃ and a latent heat of phase change of 160-190 kJ/kg.
Preferably, the volume of the annulus is 15% -20% of the bellows cavity.
Preferably, the sealing ring is a double-layer O-shaped sealing ring.
Preferably, the housing is a metal housing.
The invention also provides a use method of the high-temperature deep well logging-while-drilling drill collar containing the phase-change material, which comprises the following steps: the phase change logging instrument protection device is sleeved on the logging instrument main body from top to bottom, upper connection is achieved through upper threads, lower connection is achieved through a sealing ring and a lower step, the whole phase change logging instrument is connected with a lower drill rod, the whole phase change logging instrument is connected with the upper drill rod after being lowered, the whole phase change logging instrument is disconnected with the upper drill rod after logging is completed, the whole phase change logging instrument is disconnected with the lower drill rod, finally the phase change logging instrument protection device is disconnected with the logging instrument main body, and the phase change logging instrument protection device is replaced with the cooled phase change logging instrument protection device for later use.
Preferably, the method further comprises the step of cryogenically cooling the used phase-change logging instrument protection device.
More preferably, the number of phase change logging instrument protection devices for replacement is 2-4 sets.
The invention has the following beneficial effects:
(1) In a deep well high-temperature drilling environment, the characteristic that a large amount of latent heat of fusion is absorbed and the temperature is unchanged in the process of changing the phase change material from solid state to liquid state is utilized, so that the local normal-temperature environment of an internal logging instrument is kept for a long time, and the logging instrument unit is protected from the high-temperature environment;
(2) The phase change logging instrument protection device and the logging instrument main body can be quickly connected, disassembled and assembled, and the use efficiency is improved;
(3) The phase change logging instrument protection device can be recycled.
Drawings
FIG. 1 shows a protection device for a high-temperature deep well logging-while-drilling drill collar containing a phase change material.
FIG. 2 is a schematic illustration of a logging instrument of the high temperature deep well logging while drilling drill collar of the present invention containing phase change material.
FIG. 3 is a schematic diagram of the overall structure of the high temperature deep well logging while drilling drill collar containing the phase change material.
Fig. 4 is an enlarged view of a portion of an O-ring at the bottom of the protector of the present invention.
FIG. 5 is a flow chart of the use of the high temperature deep well logging while drilling drill collar containing phase change material of the present invention.
In the figure:
100. phase change logging instrument protection device 101, internal thread, 102, PCM injection hole, 103, corrugated pipe wall, 104, straight pipe wall, 105, corrugated pipe cavity, 106, annulus, 107, casing, 108, sealing ring, 200, logging instrument body, 201, top thread, 202, upper thread, 203, downhole instrument unit, 204, cable passage, 205, lower step, 206, bottom thread, 300, phase change logging instrument whole, 400, double-layer O-ring.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be described in further detail below with reference to examples and with reference to the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected, indirectly connected through an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if not specifically described, the components adopted in the following embodiments are all existing components, and their corresponding connection modes can also be implemented by conventional technical means, which will not be described in detail in this application.
Examples
The invention provides a high-temperature deep well logging-while-drilling drill collar containing a phase-change material, which is shown in fig. 3, and mainly comprises a phase-change logging instrument protection device 100 and a logging instrument main body 200 which is matched with the phase-change logging instrument protection device:
as shown in fig. 1, the outside of the phase-change logging instrument protection device 100 is a shell 107, the shell 107 is made of metal, an internal thread 101 connected with the logging instrument main body 200 is arranged at the top of the shell 107, a corrugated pipe cavity 105 for containing the phase-change material is arranged inside the shell 107, the inner side of the corrugated pipe cavity 105 is provided with a straight pipe wall 104, the outer side of the corrugated pipe cavity is provided with a corrugated pipe wall 103, the corrugated pipe wall 103 on the outer side can absorb the expansion volume when the phase-change material is changed from solid to liquid, the straight pipe wall 104 on the inner side can isolate the phase-change material inside the corrugated pipe cavity 105 from the underground instrument unit 203 inside the corrugated pipe, and the straight pipe wall 104 is made of metal. An annulus 106 exists between the bellows wall 103 and the housing 107, the volume of the annulus 106 being approximately 15% to 20% of the bellows cavity 105, providing a volume expansion space for the phase change material. The bottom of the housing 107 is provided with a clamping groove (conventional structure in the art, not shown), the clamping groove is embedded with a sealing ring 108, and the sealing ring 108 is preferably a double-layer O-shaped sealing ring, as shown in fig. 4, the O-shaped sealing ring is embedded in the clamping groove at the lower part of the housing 107 and can be matched with the lower step of the logging instrument main body 200 to realize sealing, so that external drilling fluid is isolated outside the drill collar. The top of the shell 107 is provided with a PCM injection hole 102, and phase change material is injected into the corrugated pipe cavity 105 from the PCM injection hole 102, wherein the phase change temperature of the phase change material is about 50-70 ℃, and the phase change latent heat is about 160-190 kJ/kg. The PCM injection holes 102 are provided in two, symmetrically disposed at both sides of the center line of the case 107.
As shown in fig. 2, the logging tool body 200 is provided with a top thread 201, an upper thread 202, a downhole tool unit 203, a lower step 205 and a bottom thread 206 from top to bottom, and a cable channel 204 is also provided in the center. The top thread 201 is connected with the upper drill pipe, the upper thread 202 is connected with the internal thread 101 at the top of the casing of the phase change logging instrument protection device 100, the lower step 205 is connected with the bottom of the phase change logging instrument protection device 100 in a sealing way through the sealing ring 108 to realize the isolation of external drilling fluid, and the bottom thread 206 is connected with the lower drill pipe.
As shown in fig. 5, when the high temperature deep well logging while drilling drill collar containing the phase change material is used, the cooled phase change logging tool protection device 100 is first sleeved on the logging tool main body 200 from top to bottom, upper connection is achieved through the upper threads 202, lower connection is achieved through the sealing ring 108 and the lower step 205, the phase change logging tool whole 300 is then connected with the lower drill rod, the phase change logging tool whole 300 is then connected with the upper drill rod after being lowered, the upper drill rod is firstly disconnected with the phase change logging tool whole 300 after logging is completed, the phase change logging tool whole 300 is then disconnected with the lower drill rod, finally the phase change logging tool protection device 100 is disconnected with the logging tool main body 200, and the phase change logging tool protection device 100 is replaced with the cooled phase change logging tool protection device 100 for subsequent use. The phase change tool protection device 100 that has been used is cryogenically cooled. The present invention requires 2-4 sets of phase change logging instrument protection devices 100 for replacement, increasing logging equipment efficiency.
The invention provides a high-temperature deep well logging-while-drilling drill collar containing a phase-change material, which comprises a phase-change logging instrument protection device and a logging instrument which is matched with the phase-change logging instrument protection device, and is more suitable for a downhole high-temperature environment by mainly utilizing the characteristic that a large amount of latent heat of fusion is absorbed in the melting process of the phase-change material and the temperature is unchanged. The invention is mainly characterized in that the local normal temperature environment of the internal logging instrument is kept for a long time under the high temperature environment, the logging instrument unit is protected from the high temperature environment, the quick connection, disassembly and assembly can be realized, the use efficiency is improved, the whole equipment can be recycled, and the like.
It should be understood that the foregoing examples of the present invention are merely illustrative of the present invention and not limiting of the embodiments of the present invention, and that various other changes and modifications can be made by those skilled in the art based on the above description, and it is not intended to be exhaustive of all the embodiments of the present invention, and all obvious changes and modifications that come within the scope of the invention are defined by the following claims.
Claims (10)
1. The utility model provides a high temperature deep well logging while drilling drill collar that contains phase change material, includes logging instrument main part and phase change logging instrument protection device, phase change logging instrument protection device cover is established the outside of logging instrument main part and with logging instrument main part adaptation, wherein:
the phase change logging instrument protection device comprises a shell, wherein the top of the shell is provided with internal threads, the bottom of the shell is provided with a clamping groove, and a sealing ring is embedded in the clamping groove; the inside of the shell is provided with a corrugated pipe cavity for containing phase change materials, the inner side of the corrugated pipe cavity is provided with a straight pipe wall, the outer side of the corrugated pipe cavity is provided with a corrugated pipe wall, and an annulus is arranged between the corrugated pipe wall and the shell;
the logging instrument top-down is provided with top screw thread, upper portion screw thread, downhole instrument unit, lower part step and bottom screw thread, the top screw thread is used for being connected with upper portion drilling rod, upper portion screw thread be used for with the internal thread connection at casing top, the lower part step be used for with the bottom sealing connection of casing, the bottom screw thread be used for being connected with lower part drilling rod.
2. The high temperature deep well logging-while-drilling drill collar containing phase change material of claim 1, wherein a PCM injection hole is provided at the top of the housing for injecting phase change material into the bellows cavity.
3. The high temperature deep well logging-while-drilling drill collar containing phase change material of claim 2, wherein the PCM injection holes are two and symmetrically arranged on two sides of the center line of the housing.
4. The high-temperature deep well logging-while-drilling drill collar containing the phase-change material according to claim 1, wherein the phase-change temperature of the phase-change material is 50-70 ℃, and the phase-change latent heat is 160-190 kJ/kg.
5. The high temperature deep well logging while drilling collar containing phase change material of claim 1 wherein the volume of the annulus is 15% -20% of the bellows cavity.
6. The high temperature deep well logging-while-drilling drill collar containing phase change material of claim 1, wherein the seal ring is a double-layer O-ring seal.
7. The high temperature deep well logging-while-drilling drill collar containing phase change material of claim 1, wherein the housing is a metal housing.
8. A method of using the high temperature deep well logging while drilling drill collar containing phase change material of any one of claims 1-7, comprising: the phase change logging instrument protection device is sleeved on the logging instrument main body from top to bottom, upper connection is achieved through upper threads, lower connection is achieved through a sealing ring and a lower step, the whole phase change logging instrument is connected with a lower drill rod, the whole phase change logging instrument is connected with the upper drill rod after being lowered, the whole phase change logging instrument is disconnected with the upper drill rod after logging is completed, the whole phase change logging instrument is disconnected with the lower drill rod, finally the phase change logging instrument protection device is disconnected with the logging instrument main body, and the phase change logging instrument protection device is replaced with the cooled phase change logging instrument protection device for later use.
9. The method of use of claim 8, further comprising cryogenically cooling the used phase change logging instrument protection device.
10. The method of claim 8, wherein the number of phase change tool protectors used for replacement is 2-4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087672.5A CN114458292B (en) | 2022-01-25 | 2022-01-25 | High-temperature deep well logging-while-drilling drill collar containing phase-change material and use method thereof |
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|---|---|---|---|
| CN202210087672.5A CN114458292B (en) | 2022-01-25 | 2022-01-25 | High-temperature deep well logging-while-drilling drill collar containing phase-change material and use method thereof |
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| CN114458292B true CN114458292B (en) | 2023-05-02 |
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