CN107060743A - A kind of mud resistivity probe - Google Patents
A kind of mud resistivity probe Download PDFInfo
- Publication number
- CN107060743A CN107060743A CN201611246424.1A CN201611246424A CN107060743A CN 107060743 A CN107060743 A CN 107060743A CN 201611246424 A CN201611246424 A CN 201611246424A CN 107060743 A CN107060743 A CN 107060743A
- Authority
- CN
- China
- Prior art keywords
- probe
- mud
- retaining collar
- probe socket
- mud resistivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000523 sample Substances 0.000 title claims abstract description 61
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 12
- 238000009413 insulation Methods 0.000 description 7
- 210000003660 reticulum Anatomy 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
- E21B49/005—Testing the nature of borehole walls or the formation by using drilling mud or cutting data
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of mud resistivity probe, including for installing the probe socket of probe, the top of probe socket is provided for the electrode retaining collar with mud contacts；Some capillaries are provided with probe socket, the end of capillary is contacted with electrode retaining collar, the electrical connection for electrode retaining collar is drawn, and the bottom of capillary is connected by lead with measuring circuit；The bottom of probe socket is provided with bonnet.The structure of mud resistivity probe of the present invention is divided into inner chamber two parts that shell and capillary, electrode retaining collar, lead, sealing-plug, the film being made up of probe socket and bonnet are constituted.Mud resistivity is so more accurately measured, the influence that the borehole wall and mud cutout are measured mud resistivity is effectively eliminated, while in turn ensure that reliability of structure, and does not increase the difficulty of processing of structure, so that assembling is also very convenient with repairing.The present invention can calculate to provide for electrical log more precisely computes basis, and strong support is provided for later productionization well logging.
Description
【Technical field】
The invention belongs to oil well logging instrument technical field, it is related to a kind of mud resistivity probe.
【Background technology】
The shale content of many oil reservoirs of China is heavier, and the change of natural potential amplitude is little, and lithology and mud are oozed in the hole of reservoir
Variation is presented in matter content ratio, and some water layer resistivity is sufficiently close to resistivity reservoir, it is impossible to distinguished.Resistivity error
Can be very big.
Mud resistivity parameter is that oil field is badly in need of, and evaluates extremely important to oil, but home and abroad is so far also without instrument
This parameter of the measure of energy accurate quantitative analysis.In order to help oil field solving practical problems, it is badly in need of carrying out mud log method
Research and instrument development, anxious oil field institute are anxious.
Mud resistivity probe is an important component of mud log instrument, and the quality of its structure is directly
Have influence on measurement accuracy.Domestic and international logger has a variety of resistivity probe structures, and sonde configuration form common at present has outer
Pipe side is filled and outer tunnel end is filled etc., and subject matter is that probe contacts mud area is uneven, and the borehole wall has shadow to mud resistivity measurement
Ring, but measurement accuracy does not reach highest level also.
【The content of the invention】
It is an object of the invention to solve the above problems there is provided a kind of mud resistivity probe, the probe is capable of science
Mud resistivity parameter is obtained exactly, and strong support is provided for later productionization well logging.
To reach above-mentioned purpose, the present invention is achieved using following technical scheme：
A kind of mud resistivity probe, including for installing the probe socket of probe, the top of probe socket is provided for and mud
Starch the electrode retaining collar of contact；Some capillaries are provided with probe socket, the end of capillary is contacted with electrode retaining collar, for being electrically connected for electrode retaining collar
Extraction is connect, the bottom of capillary is connected by lead with measuring circuit；The bottom of probe socket is provided with bonnet.
Further improve of the invention is：
Electrode retaining collar is ring-type copper sheet.
Lead is drawn and sets sealing-plug on the part of probe socket.
Lead is connected with capillary by welding manner.
Bonnet is fixedly mounted by screw and probe socket.
The part that bonnet is contacted with probe socket is provided with the glue for making to keep balance inside probe socket with outside pressure
Piece.
Compared with prior art, the invention has the advantages that：
The structure of mud resistivity of the present invention probe be divided into the shell and capillary that are made up of probe socket and bonnet, electrode retaining collar,
Lead, sealing-plug, inner chamber two parts of film composition.Mud resistivity is so more accurately measured, the borehole wall is effectively eliminated and disconnected
The influence measured mud resistivity is flowed, while in turn ensure that reliability of structure, and does not increase the difficulty of processing of structure, so that
Make assembling also very convenient with repairing.The present invention calculates to provide for electrical log more precisely computes basis, is later production
Well logging provides strong support.
【Brief description of the drawings】
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is operation principle schematic diagram of the invention；
Fig. 3 is use position view of the invention；
Fig. 4 is measurement current diagram of the invention；
Mud flow schematic diagram when Fig. 5 works for the put-on and delegated of the present invention；
Fig. 6 is patch borehole wall operating diagram of the invention；
Fig. 7 is inclined work schematic diagram of the invention.
Wherein, 1- probe sockets；2- capillaries；3- electrode retaining collars；4- leads；5- sealing-plugs；6- films；7- bonnets；8- screws.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, mud resistivity probe of the present invention, including for installing the probe socket 1 of probe, the top of probe socket 1
The electrode retaining collar 3 with mud contacts is provided for, electrode retaining collar 3 is ring-type copper sheet；Some capillaries 2, capillary 2 are provided with probe socket 1
End contacted with electrode retaining collar 3, for electrode retaining collar 3 electrical connection draw, the bottom of capillary 2 passes through lead 4 and measuring circuit phase
Even, lead 4, which is drawn, sets sealing-plug 5 on the part of probe socket 1, lead 4 is welded with capillary 2；The bottom of probe socket 1 passes through screw
8 are provided with bonnet 7, and bonnet 7 is provided with for keeping the inside of probe socket 1 and outside pressure with the part that probe socket 1 is contacted
The film 6 of balance.
The principle and the course of work of the present invention：
As shown in Fig. 2 work when, by constant-current source provide measurement electric current, outwards launch through A0, behind mud, stratum by
A1 is received.Because there is resistance on mud, stratum, a potential difference can be produced when electric current passes through M1, M2.By the M1 detected,
M2 potential differences send into calculation procedure, it is possible to calculate mud resistivity Rm '.
The present invention is A0, M1, M2, A1 and tie-portion in Fig. 2.The features of the present invention：
State when the 1st, working
As shown in figure 3, probe is installed in the insulation shell of instrument.Instrument is outer to be full of mud between the borehole wall, by two ends of popping one's head in
Mud is introduced insulation shell by opening, makes to be also filled with mud inside insulation shell, and probe is in mud.
2nd, eliminating measurement of the stratum on mud resistivity influences
As shown in figure 4, with reference to Fig. 2, according to Ohm's law：
Mud resistance Rm ' obtained by measurement is composed in parallel by mud resistance Rm in itself and formation resistivity Re.
As can be seen from the above equation, when Re tends to infinity, Rm '=Rm
The present invention has been separated the electrical connection of probe, mud and ground interlayer with insulation shell, has been made Re by the way of built-in probe
Tend to be infinitely great.Mud resistivity i.e. obtained by measurement is exactly the resistivity of mud in itself, eliminates formation resistivity to measurement institute
The influence of the mud resistivity obtained.
3rd, the influence to measurement when instrument moves up and down is eliminated
As shown in figure 4, being moved upwards regardless of instrument, still move downward.Due to cutting for present position of being popped one's head in insulation shell
Area is consistently less than the sectional area at probe two ends, and mud stream is not in cutout at probe.Therefore, accurate mud can be obtained
Measure resistance.
4th, eliminate instrument it is adherent when influence to measurement
As shown in fig. 6, because probe is in insulation shell, stratum can be ignored to the influence for measuring mud resistance.
5th, the influence to measurement when instrument is tilted is eliminated
As shown in fig. 7, because probe is in insulation shell, stratum can be ignored to the influence for measuring mud resistance.
The technological thought of above content only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme each falls within claims of the present invention
Protection domain within.
Claims (6)
1. a kind of mud resistivity probe, it is characterised in that including the probe socket (1) for installing probe, the top of probe socket (1)
End is provided for the electrode retaining collar (3) with mud contacts；Be provided with some capillaries (2) in probe socket (1), the end of capillary (2) with
Electrode retaining collar (3) is contacted, and the electrical connection for electrode retaining collar (3) is drawn, and the bottom of capillary (2) passes through lead (4) and measuring circuit phase
Even；The bottom of probe socket (1) is provided with bonnet (7).
2. mud resistivity probe according to claim 1, it is characterised in that electrode retaining collar (3) is ring-type copper sheet.
3. mud resistivity probe according to claim 1, it is characterised in that lead (4) draws the part of probe socket (1)
Upper setting sealing-plug (5).
4. mud resistivity probe according to claim 1, it is characterised in that lead (4) passes through welding side with capillary (2)
Formula is connected.
5. mud resistivity probe according to claim 1, it is characterised in that bonnet (7) passes through screw (8) and probe socket
(1) it is fixedly mounted.
6. mud resistivity probe according to claim 1, it is characterised in that the portion that bonnet (7) is contacted with probe socket (1)
Set up the film (6) being equipped with for making probe socket (1) internal with outside pressure holding balance separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246424.1A CN107060743A (en) | 2016-12-29 | 2016-12-29 | A kind of mud resistivity probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246424.1A CN107060743A (en) | 2016-12-29 | 2016-12-29 | A kind of mud resistivity probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107060743A true CN107060743A (en) | 2017-08-18 |
Family
ID=59624321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611246424.1A Pending CN107060743A (en) | 2016-12-29 | 2016-12-29 | A kind of mud resistivity probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060743A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617868A (en) * | 1969-06-09 | 1971-11-02 | Marathon Oil Co | Resistivity cell including a grounded shield for liquid-solid mixtures |
| CN201041039Y (en) * | 2007-04-03 | 2008-03-26 | 中国石油天然气集团公司 | Microelectrode array for measuring downhole shallow slurry electrical resistivity |
| CN101694157A (en) * | 2009-09-25 | 2010-04-14 | 中国电子科技集团公司第二十二研究所 | Method for shortening length of log tool and dual laterolog tool with electrode probe internally provided with electronic circuit |
| CN102798762A (en) * | 2011-05-24 | 2012-11-28 | 桑德克斯有限公司 | Method and apparatus for measuring borehole mud resistivity |
| CN103015974A (en) * | 2012-12-25 | 2013-04-03 | 中国海洋石油总公司 | Measuring probe of oil-base mud logger |
| CN103628825A (en) * | 2012-08-24 | 2014-03-12 | 中国石油集团长城钻探工程有限公司 | Slurry resistivity measurement pressure bearing connector used for induction logging instrument |
-
2016
- 2016-12-29 CN CN201611246424.1A patent/CN107060743A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3617868A (en) * | 1969-06-09 | 1971-11-02 | Marathon Oil Co | Resistivity cell including a grounded shield for liquid-solid mixtures |
| CN201041039Y (en) * | 2007-04-03 | 2008-03-26 | 中国石油天然气集团公司 | Microelectrode array for measuring downhole shallow slurry electrical resistivity |
| CN101694157A (en) * | 2009-09-25 | 2010-04-14 | 中国电子科技集团公司第二十二研究所 | Method for shortening length of log tool and dual laterolog tool with electrode probe internally provided with electronic circuit |
| CN102798762A (en) * | 2011-05-24 | 2012-11-28 | 桑德克斯有限公司 | Method and apparatus for measuring borehole mud resistivity |
| CN103628825A (en) * | 2012-08-24 | 2014-03-12 | 中国石油集团长城钻探工程有限公司 | Slurry resistivity measurement pressure bearing connector used for induction logging instrument |
| CN103015974A (en) * | 2012-12-25 | 2013-04-03 | 中国海洋石油总公司 | Measuring probe of oil-base mud logger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |