CN107916928B - Fluid analyzer while drilling - Google Patents
Fluid analyzer while drilling Download PDFInfo
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- CN107916928B CN107916928B CN201610879144.8A CN201610879144A CN107916928B CN 107916928 B CN107916928 B CN 107916928B CN 201610879144 A CN201610879144 A CN 201610879144A CN 107916928 B CN107916928 B CN 107916928B
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- 239000012530 fluid Substances 0.000 title claims abstract description 99
- 238000005553 drilling Methods 0.000 title claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 84
- 238000004458 analytical method Methods 0.000 claims abstract description 68
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000005415 magnetization Effects 0.000 claims description 8
- 238000007405 data analysis Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 238000005259 measurement Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- -1 content Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000004044 response Effects 0.000 description 1
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Images
Classifications
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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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/088—Well testing, e.g. testing for reservoir productivity or formation parameters combined with sampling
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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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a fluid while drilling analyzer, which comprises: the short section is connected with the drill rod, and an accommodating cavity capable of accommodating the analysis unit is formed in the short section; the analysis unit comprises a suction module for sucking fluid in the stratum and an analysis probe capable of detecting characteristic parameters of the fluid, the analysis probe is communicated with the suction module, and the suction module is abutted against the well wall; the suction module is electrically connected with the control system; and a drainage tube capable of conveying drilling fluid to the drill bit is arranged in the drill rod, and the drainage tube is arranged on one side of the analysis probe. The fluid while drilling analyzer has simple mechanism and simple assembly process, brings great convenience for use, and can quantitatively evaluate key information such as the composition, viscosity and the like of formation fluid in the drilling process, thereby providing key information for the exploration and development of oil and gas.
Description
Technical Field
The invention relates to the field of well logging while drilling of a drilling engineering technology for petroleum exploration and development, in particular to a fluid analyzer while drilling capable of analyzing characteristic parameters of formation fluid.
Background
The physical properties of the reservoir fluids can be used to determine the reserves of the reservoir and can also help predict the capacity and economics of the reservoir. The degree of knowledge of the reservoir fluid properties is an important factor in the development of hydrocarbon reservoirs.
The underground nuclear magnetic resonance fluid analysis technology utilizes the interaction of the magnetism of atomic nuclei and an external magnetic field and response signal characteristics thereof to obtain geophysical parameters such as fluid components, content of the fluid components, fluid viscosity, gas-oil ratio and the like, can also help to determine the invasion range and pollution degree of drilling fluid filtrate of a stratum near a well hole, and provides key information for exploration and development of oil and gas.
Accordingly, there is a need for a fluid while drilling analyzer that can analyze characteristic parameters of formation fluids.
Disclosure of Invention
The fluid analyzer while drilling has the advantages of simple structure, simple assembly and convenient embedding into the outer wall of the drill rod; the while-drilling fluid analyzer can quantitatively evaluate key information such as components, viscosity and the like of formation fluid in the drilling process, so that key information is provided for exploration and development of oil gas.
To achieve the above object, the present invention provides a fluid while drilling analyzer, wherein the fluid while drilling analyzer comprises: the short section is connected with the drill rod, and an accommodating cavity capable of accommodating the analysis unit is formed in the short section;
the analysis unit comprises a suction module for sucking fluid in the stratum and an analysis probe capable of detecting characteristic parameters of the fluid, the analysis probe is communicated with the suction module, and the suction module is abutted against the well wall;
the suction module is electrically connected with the control system;
and a drainage tube capable of conveying drilling fluid to the drill bit is arranged in the drill rod, and the drainage tube is arranged on one side of the analysis probe.
The fluid while drilling analyzer comprises a suction probe, a movable metal probe is arranged in the suction probe, an annular leather bag is arranged between the suction probe and the well wall, a pressurizing unit communicated with the suction probe is arranged on one side of the suction probe, which is far away from the annular leather bag, and the pressurizing unit and the metal probe are respectively electrically connected with the control system.
The fluid while drilling analyzer as described above, wherein a filter screen is disposed within the suction probe, and the metal probe movably passes through the filter screen.
The fluid while drilling analyzer as described above, wherein a formation pressure tester is disposed between the pumping module and the pressurizing unit.
The fluid while drilling analyzer as described above, wherein the fluid outlet end of the analysis probe is connected to a plurality of sampling bottles.
The fluid while drilling analyzer as described above, wherein the liquid inlet end of the sampling bottle is provided with a sampling stress meter, and the sampling stress meter is electrically connected with the control system.
The fluid while drilling analyzer as described above, wherein the outlet end of the analysis probe is communicated with a sampling halter.
The fluid while drilling analyzer as described above, wherein the analysis probe comprises a hollow magnet, the liquid inlet port of a sample tube is communicated with the suction module, the sample tube passes through the magnet, an antenna connected with the magnet is wound on the outer wall of the sample tube, one end of the antenna is electrically connected with the control system, and the other end of the antenna is electrically connected with the data analysis receiving unit of the analysis unit.
The fluid while drilling analyzer as described above, wherein the analysis probe includes a hollow magnet, the magnet is formed by splicing a plurality of sections of polarized magnets, the liquid inlet port of a sample tube is communicated with the suction module, the sample tube passes through the magnet, a spiral antenna is wound around the outer wall of the sample tube, the antenna is formed by a first spiral antenna and a second spiral antenna, the second spiral antenna is spirally arranged in the spiral seam of the first spiral antenna, one end of the first spiral antenna is electrically connected with the control system, the other end of the first spiral antenna is electrically connected with the magnet, and the second spiral antenna is electrically connected with the data analysis receiving unit of the analysis unit.
The fluid while drilling analyzer as described above, wherein the magnet is an annular magnet, and the magnet is clamped in the magnetic steel framework.
The fluid while drilling analyzer has the advantages of simple structure, simple assembly process and great convenience for use, can quantitatively evaluate key information such as components, viscosity and the like of formation fluid in the drilling process, thereby providing key information for exploration and development of oil gas.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a schematic diagram of the configuration of a fluid while drilling analyzer of the present invention;
FIG. 2 is a schematic diagram of the structure of the analysis unit of the while drilling fluid analyzer of the present invention;
FIG. 3 is a schematic structural view of a first embodiment of an analytical probe according to the present invention;
FIG. 4 is a schematic structural view of a second embodiment of an analytical probe according to the present invention;
FIG. 5 is a schematic view of the connection between the magnet and the magnetic steel skeleton of the analytical probe of the present invention;
fig. 6 is a schematic structural diagram of an antenna of the present invention;
FIG. 7 is a flow chart of the general mode of the fluid while drilling analyzer of the present invention;
FIG. 8 is a flow chart of fluid analysis of the while drilling fluid analyzer of the present invention;
fig. 9 is a schematic view of the magnetic field distribution in the central region of the magnet of the analysis probe of the present invention.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations of the invention, which may be considered to be within the scope of the invention, will occur to those skilled in the art upon studying the disclosure and the accompanying drawings, and the invention will be further described below.
Fig. 1 to 9 are a schematic structural diagram of a while-drilling fluid analyzer, a schematic structural diagram of an analysis unit, a schematic structural diagram of a first embodiment of an analysis probe, a schematic structural diagram of a second embodiment of an analysis probe, a schematic connection diagram of a magnet and a magnetic steel skeleton of an analysis probe, a schematic structural diagram of an antenna, a general mode flow diagram of a while-drilling fluid analyzer, a flow diagram of fluid analysis of a while-drilling fluid analyzer, and a schematic distribution diagram of a magnetic field in a central region of a magnet of an analysis probe, respectively.
As shown in fig. 1 and 2, the while drilling fluid analyzer of the present invention includes: the pipe nipple 2 is connected with the drill pipe 1, an accommodating cavity 21 capable of accommodating the analysis unit 3 is arranged in the pipe nipple 2, the analysis unit 3 comprises a suction module 31 capable of sucking fluid in the stratum 4 and an analysis probe 32 capable of detecting characteristic parameters of the fluid, the analysis probe 32 is communicated with the suction module 31, namely the fluid sucked by the suction module 31 is analyzed by the analysis probe 32, so that the characteristic parameters of the fluid are analyzed in real time, the suction module 31 is abutted to the well wall 5, the suction module 31 is electrically connected with the control system 6, the suction module 31 is controlled by the control system 6 on the ground to suck the fluid in the stratum 4, namely, automatic control is realized, a drainage pipe 7 capable of conveying drilling fluid to the drill bit 11 is arranged in the drill pipe 1, and the drainage pipe 7 is positioned on one side of the analysis probe 32.
Specifically, as shown in fig. 2, the suction module 31 of the present invention includes a suction probe 311, a metal probe (not shown) is disposed in the suction probe 311 and can move relative to the suction probe 311, an annular bladder is disposed between the suction probe 311 and the borehole wall 5, the annular bladder has a vacuum sealing performance and is closely attached to the borehole wall 5, so as to form a seal, a pressurizing unit 33 is disposed on a side of the suction probe 311 away from the annular bladder, the pressurizing unit 33 and the metal probe are electrically connected to the control system 6, specifically, in the present invention, the pressurizing unit 33 is a high pressure pump, a pressure pump can be adopted, other pressurizing devices can be adopted, without specific limitation, the pressurizing unit 33 is communicated with the suction probe 311 through a first pipe 34, and further, a formation pressure tester 35 is disposed between the suction probe 311 and the pressurizing unit 33, the formation pressure tester 35 records the change of the formation pressure, and the change is fed back to the control system 6, namely the formation pressure tester 35 is electrically connected with the control system 6, so that the metal probe is controlled to penetrate into the formation, at the moment, the control system 6 starts the pressurizing unit 33, the pressurizing unit 33 operates, the fluid in the formation 4 is sucked into the first pipeline 34 through the metal probe, a second pipeline 36 communicated with the first pipeline 35 is arranged between the formation pressure tester 35 and the pressurizing unit 33, and the fluid in the formation is conveyed into the analysis unit 3 through the second pipeline 36, so that the purpose of analyzing the characteristic parameters of the fluid is realized.
Further, a filter screen 312 is arranged in the suction probe 311, the metal probe penetrates through the filter screen 312 and can move in the filter screen 312, so that the effect of filtering the fluid in the formation 4 is realized, the occurrence of blockage of the analysis probe 32 is prevented, the accuracy of analysis of the characteristic parameters (including parameters such as composition, content, fluid viscosity and gasoline ratio) of the fluid by the analysis probe 32 is further improved, and the filter screen 312 filters the sucked fluid, so that the blockage of the first conduit 35 and the second conduit 36 is prevented.
Specifically, the liquid outlet end of the analysis probe 32 is communicated with a plurality of sampling bottles 37, and further, the liquid inlet end of each sampling bottle 37 is provided with a sampling stress meter 38, and the sampling stress meters 38 are electrically connected with the control system 6, that is, the sampling stress meters 38 are used for recording the filling pressure of the sampling bottles 37 in the sampling process, so that the control system 6 controls the closing of valves of the sampling bottles 37 to prevent the overflow of fluid from the sampling bottles 37, it is described herein that the number of the sampling bottles 37 is multiple, and only one sampling bottle 37 is schematically shown in fig. 2.
Further, the liquid outlet end of the analysis probe 32 is further communicated with a sample outlet tap 80, specifically, the middle position of the third pipeline 39 is communicated with the liquid outlet end of the second pipeline 36, one port of the third pipeline 39 is communicated with the sampling bottle 37, and the other end of the third pipeline is communicated with the sample outlet tap 80, so that after the fluid in the formation 4 enters the analysis probe 32 for nuclear magnetic resonance measurement, a part of the fluid enters the sampling bottle 38 for storage, the collected fluid sample is used for a fluid analysis experiment in a ground laboratory, and the other part of the fluid returns to the well through the sample outlet tap 80.
Specifically, in the present invention, the analytical probe 32 is employed in two different embodiments.
As shown in fig. 3, when the analysis probe 32 is the first embodiment, the analysis probe 32 includes a hollow magnet 321 and an antenna 322, the magnet 321 is electrically connected to the antenna 322, specifically, the liquid inlet port of the second conduit 36 is communicated with the suction module 31, and the second conduit 36 passes through the magnet 321, in the present invention, the magnet 321 adopts a one-piece magnet structure, the antenna 322 is a spiral tube antenna, the antenna 322 is wound on the outer wall of the second conduit, and one end of the antenna 322 is electrically connected to the control system 6, and the other end is electrically connected to the data analysis receiving unit of the analysis unit 3. Further, as shown in fig. 5, the magnet 321 is in a tooth shape and is clamped in the Magnetic steel framework 323, so as to facilitate installation of the while-drilling fluid analyzer of the present invention and prevent Magnetic pole displacement between the magnets 321, further, in the present invention, the tooth structure of the magnet 321 is symmetrically formed in pairs from top to bottom and from left to right, and the tooth portions 320 of the tooth structure are the same in size, that is, the tooth portions 320 of the magnet 321 are symmetrically formed from top to bottom and from left to right, and the tooth portions 320 are the same in size, so as to ensure that the magnet 321 is stably clamped in the Magnetic steel framework 323, fig. 5 only schematically shows that the magnet 321 is in the tooth structure, the magnetization direction of the magnet 321 is a single-pole magnetization Field, a uniform Field is formed in the middle of the magnet 321, in the present invention, the Magnetic Field strength is adjusted by adjusting the inner diameter of the magnet 321, the smaller the inner diameter is, the higher the Magnetic Field strength is higher, as shown in fig. 9, the Magnetic Field in the range from the upper end to the lower end of the magnet 321 (Magnetic Field, MF).
The antenna 322 is wound on the outer side of the second flow guide pipe 36 of the measurement section 324 inside the magnet 321, the outer wall of the second flow guide pipe 36 is grooved, the antenna 322 is embedded in the groove and sealed by oil filling, and a metal shielding shell is sleeved outside a sealing layer, so that the antenna is protected, and the service life of the while-drilling fluid analyzer is prolonged.
As shown in fig. 4, when the analysis probe 32 is a second embodiment, the analysis probe 32 includes a hollow magnet 521 and an antenna 522, the liquid inlet port of the second conduit 36 is communicated with the suction module 31, and the second conduit 36 passes through the magnet 521, in this embodiment, the magnet 521 includes a first magnet a, a second magnet B and a third magnet C which are spliced together, wherein the third magnet C corresponds to the measurement section, the first magnet a, the second magnet B and the third magnet C are all ring magnets, the magnetization direction is a one-way magnetization direction, a relatively uniform Magnetic Field with a single magnet direction is generated inside the magnet 521, the Magnetic Field at the center of the magnet 521 is as shown in fig. 9, the Magnetic Field (Magnetic Field, MF) at the center in the range of the length L from the upper end to the lower end of the magnet 521 is schematically shown in fig. 6, the antenna 522 is composed of a first helical antenna 5221 and a second helical antenna 5222, the second helical antenna 5222 is spirally arranged in the spiral seam of the first helical antenna 5221, the antenna 522 is a solenoid antenna, one end of the first solenoid antenna 5221 is electrically connected to the control system 6, the other end of the first solenoid antenna 5221 is electrically connected to the magnet 521, and the second solenoid antenna 5222 is electrically connected to the data analysis receiving unit of the analysis unit 3. In this embodiment, the antenna 522 is a solenoid antenna made of an enameled copper wire (preferably, 0.3 to 2mm in diameter) or a strip of deoxidized copper (preferably, 0.1 to 2mm in thickness), the antenna 522 is wound around the outside of the second conduit 36, the antenna 522 is a dual-solenoid discrete structure, the antenna 522 is wound around the outside of the second conduit 36 of the internal measurement section of the magnet 521, that is, the outside of the second conduit 36 corresponding to the inside of the magnet C, the outer wall of the second conduit 36 is grooved, the antenna 522 is embedded into the groove and sealed by oil, and a metal shielding shell is wrapped outside the sealing layer; in a fluid flowing state, the first helical antenna 5221 is used for transmitting a pulse signal, the pulse signal is transmitted to the magnet 521 to generate a magnetic field, the magnet 521 itself generates an inherent magnetic field, the two magnetic fields generate a resonance magnetic field, so as to analyze characteristic parameters of the fluid, the second helical antenna 5222 is used for receiving a magnetic resonance signal, and the signal is transmitted to the data analysis receiving unit of the analysis unit 3, so as to obtain the characteristic parameters of the fluid, wherein the nuclear magnetic fluid analysis technology for the fluid is the conventional technology, and details are not repeated here. As shown in fig. 5, the high magnetic steel 523 is added to bind the magnetic force lines outside the entire magnet 521, so that the entire magnetic field is located inside the high magnetic steel 523, the magnetic field is not leaked, the entire fluid analysis probe 32 is small enough (preferably, 3-5 cm in diameter), and is embedded into the accommodating cavity 21 for fixing, further, the magnet 521 is also in a tooth shape and is clamped inside the magnetic steel frame 523, thereby facilitating the installation of the while-drilling fluid analyzer of the present invention and preventing the magnetic pole displacement between the magnets 521, in a specific embodiment of the present invention, the tooth structure of the magnet 521 is symmetrically formed in pairs from top to bottom and from left to right, and the tooth portions 320 of the tooth structure are the same size, i.e. the tooth portions 320 of the magnet 521 are symmetrically formed from top to bottom and from left to right, and the tooth portions 320 are the same size, thereby ensuring that the magnet 521 is stably clamped inside the magnetic steel frame 523, fig. 5 only schematically shows that the magnet 521 is in a tooth structure, the magnetization direction of the magnet 521 is unipolar magnetization, a uniform field is formed in the middle of the magnet 521, and the magnetic field strength is adjusted by adjusting the inner diameter of the magnet 521 in the invention, wherein the smaller the inner diameter is, the higher the field strength is.
PreferablyThe magnet 321/521 of the fluid analysis probe 32 may be a double bar magnet, a Halbach nested magnet, or the like; a relatively uniform magnetic field is formed in the middle of the magnet 321/521 for the relaxation time (T)1、T2) A gradient magnetic field is formed at a portion near the inside of the magnet 321/521 for measurement of the diffusion coefficient (D); the antenna 521 discrete structure may employ a first helical antenna 5221 as a solenoid and a second helical antenna 5222 as a saddle antenna, removing coupling between the first helical antenna 5221 and the second helical antenna 5222; in the stationary measurement mode, measurements can be made with only the solenoid antenna.
Specifically, in the present invention, the while-drilling fluid analyzer has a plurality of operating modes, including: a waiting while drilling mode, a fluid analysis mode. Fig. 7 is a schematic diagram of the overall work flow of the while drilling fluid analyzer. Firstly, the ground control system 6 sends out a signal, the while-drilling fluid analyzer enters a while-drilling standby mode, and the while-drilling fluid analyzer does not perform collection and analysis in the drilling process. The drilling operation is stopped, the drilling operation is fed back to the ground control system 6, and the analysis unit 3 enters a state to be operated; after preparation, the downhole tool feeds back the status to the surface control system 6, the metal probe penetrates into the formation, and the pressurizing unit 33 is then activated to start the fluid analysis mode. And after the fluid analysis data is acquired by the acquisition system, the fluid analysis data is fed back to the ground control system 6, so that the fluid analysis working mode is stopped, and the drilling standby working mode is continued.
As shown in fig. 8, the fluid analysis mode is further divided into a stationary fluid measurement mode and a flow measurement mode. One-dimensional T can be carried out in a static state1、T2And two-dimensional T1-T2Measuring; in the fluid flow analysis mode, the fluid flow one-dimensional T can be carried out under the condition of requiring a short time1、T2The measurement can be carried out under the condition of time allowance1、T2And two-dimensional T1-T2And (6) measuring.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A fluid while drilling analyzer, comprising:
the short section is connected with the drill rod, and an accommodating cavity capable of accommodating the analysis unit is formed in the short section;
the analysis unit comprises a suction module for sucking fluid in the stratum and an analysis probe capable of detecting characteristic parameters of the fluid, the analysis probe is communicated with the suction module, and the suction module is abutted against the well wall;
the suction module is electrically connected with the control system;
a drainage tube capable of conveying drilling fluid to a drill bit is arranged in the drill rod, and the drainage tube is arranged on one side of the analysis probe;
the analysis probe comprises a hollow magnet, the liquid inlet port of a sample tube is communicated with the suction module, the sample tube passes through the magnet, an antenna electrically connected with the magnet is wound on the outer wall of the sample tube, one end of the antenna is electrically connected with the control system, and the other end of the antenna is electrically connected with the data analysis receiving unit of the analysis unit;
the magnet is an annular magnet, and is clamped in the magnetic steel framework by adopting a tooth-shaped structure;
the tooth-shaped structures of the magnets are symmetrically formed in pairs from top to bottom and from left to right, and the tooth parts of the tooth-shaped structures are consistent in size;
the magnetization direction of the magnet is unipolar magnetization;
the liquid outlet end of the analysis probe is communicated with a plurality of sampling bottles; the liquid inlet end of the sampling bottle is provided with a sampling stress meter and a valve, and the sampling stress meter is electrically connected with the control system.
2. The fluid while drilling analyzer of claim 1, wherein the pumping module comprises a pumping probe having a movable metal probe therein, an annular bladder is disposed between the pumping probe and the borehole wall, a pressurizing unit is disposed on a side of the pumping probe away from the annular bladder and is in communication with the pumping probe, and the pressurizing unit and the metal probe are electrically connected to the control system respectively.
3. The fluid while drilling analyzer of claim 2, wherein a filter screen is disposed within the suction probe, and the metal probe is movably passed through the filter screen.
4. The fluid while drilling analyzer of claims 2 or 3, wherein a formation pressure tester is disposed between the pumping module and the pressurizing unit.
5. The while drilling fluid analyzer of any one of claims 1 to 3, wherein the outlet end of the analysis probe is communicated with a sampling halter.
6. The while drilling fluid analyzer of any one of claims 1 to 3, wherein the magnet is formed by splicing a plurality of segments of polarized magnets, the antenna is formed by a first spiral antenna and a second spiral antenna, the spiral of the second spiral antenna is arranged in the spiral seam of the first spiral antenna, one end of the first spiral antenna is electrically connected with the control system, the other end of the first spiral antenna is electrically connected with the magnet, and the second spiral antenna is electrically connected with the data analysis receiving unit of the analysis unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610879144.8A CN107916928B (en) | 2016-10-08 | 2016-10-08 | Fluid analyzer while drilling |
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| CN201610879144.8A CN107916928B (en) | 2016-10-08 | 2016-10-08 | Fluid analyzer while drilling |
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| CN107916928A CN107916928A (en) | 2018-04-17 |
| CN107916928B true CN107916928B (en) | 2021-08-06 |
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| CN110412064B (en) * | 2018-04-27 | 2023-03-17 | 中国石油化工股份有限公司 | Drilling fluid nuclear magnetic resonance on-line measuring system |
| CN108533249A (en) * | 2018-04-28 | 2018-09-14 | 中国电子科技集团公司第二十二研究所 | Mine-used I. S signal measurement apparatus |
| CN111443024B (en) * | 2020-04-01 | 2021-04-13 | 清华大学 | System and method for underground measurement of rock in-situ permeability |
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| US6346813B1 (en) * | 1998-08-13 | 2002-02-12 | Schlumberger Technology Corporation | Magnetic resonance method for characterizing fluid samples withdrawn from subsurface formations |
| US6737864B2 (en) * | 2001-03-28 | 2004-05-18 | Halliburton Energy Services, Inc. | Magnetic resonance fluid analysis apparatus and method |
| BRPI0712334B1 (en) * | 2006-06-09 | 2018-02-14 | Halliburton Energy Services, Inc. | APPARATUS AND METHOD FOR SAMPLING A TRAINING FLUID |
| CN103806910A (en) * | 2014-03-04 | 2014-05-21 | 中国海洋石油总公司 | Stratigraphic drilling sampling system |
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| CN107916928A (en) | 2018-04-17 |
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