EP0710319A1 - Procede et dispositif de detection et/ou de mesure d'au moins un parametre geophysique sur une carotte - Google Patents
Procede et dispositif de detection et/ou de mesure d'au moins un parametre geophysique sur une carotteInfo
- Publication number
- EP0710319A1 EP0710319A1 EP95918479A EP95918479A EP0710319A1 EP 0710319 A1 EP0710319 A1 EP 0710319A1 EP 95918479 A EP95918479 A EP 95918479A EP 95918479 A EP95918479 A EP 95918479A EP 0710319 A1 EP0710319 A1 EP 0710319A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow body
- core
- carrot
- tube
- measurement
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 16
- 244000000626 Daucus carota Species 0.000 claims description 21
- 235000002767 Daucus carota Nutrition 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 230000002285 radioactive effect Effects 0.000 claims description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims 3
- 235000009518 sodium iodide Nutrition 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 6
- 230000001788 irregular Effects 0.000 description 2
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 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
Definitions
- the present invention relates to a method for detecting and / or measuring at least one geophysical parameter on a core, in particular in the petroleum field.
- Geophysical parameters which are of interest to those skilled in the art in the study of oil wells during drilling are, for example, the natural radioactivity of the carrot, the absorption of known radiation emitted by a known source. arranged near the carrot, and the value of the liquid saturation of the carrot (value measured by induction).
- This cutting-off and the closings and transport manipulations modify the layers of the core te, especially at the two ends of each section, and therefore distort the information that could be obtained from measurements made along the sections and mainly at their ends.
- the carriage being moved by hand, the speed which is communicated to it is irregular and this can compromise the correct quality of the measurements.
- Parameters of the aforementioned kind are likely to be influenced by the environment of the carrot at the time of the measurement or, similar parameters coming from the environment are likely to be added to the corresponding parameters of the carrot during the measurement made on it.
- this difference in distance may modify the result of the measurement, or the ground may influence the instruments due to the proximity, and all the more so since this proximity is asymmetrical with respect to the entire mass of the carrot.
- a lack of accessibility of the carrot does not allow the measurement to be optimized.
- the aim of the present invention is to remedy these problems by making it possible to carry out the detections and / or measurements of geodesic parameters on a core which has undergone the least possible manipulation, for example because it has not yet been cut. in sections, and which is located so as to undergo from the environment the least possible influence or the least asymmetrically possible, because it is for example still maintained, until the moment of detection and / or measurement, in a vertical position (therefore under a symmetrical influence of the ground) and sheltered in the external core barrel tube which is metallic and which therefore forms a screen to certain influences of the surrounding environment.
- the method comprises, during a coring operation with a corer:
- the present invention also relates to a device for detecting and / or measuring at least one geophysical parameter on a core, in particular in the petroleum field.
- said device comprises: a hollow body having two openings, located opposite one another along a longitudinal axis of the hollow body, and a free passage extending between the two openings, the latter and the free passage being arranged so that a core, enclosed in an internal core barrel tube, can pass freely from one opening to the other through the hollow body, fixing means for fixing in a removable manner.
- the hollow body to an external tube of the core barrel, at the end of the latter by which a core enclosed in an internal tube is taken out, so that the hollow body is located, at least in major party in the extension of the outer tube, the longitudinal axes of the hollow body and the core barrel being substantially coaxial, and at least one sensor for detecting and / or measuring a geophysical parameter to be evaluated on a core to be removed from the core barrel, detection and / or measurement sensor being fixed to the hollow body so that it is arranged opposite the core, enclosed in said internal tube, when the latter is in the aforementioned free passage.
- Figure 1 shows an elevational view and partially broken of a device of the invention, for the implementation of the method of the invention, the device being installed on a corer and being in use.
- Figure 2 is a view with cross-dirty section, along line II-II of Figure 1 and according to the associated arrows, showing the attachment of the above device to the core barrel.
- Figure 3 is a view with cross-dirty section, along line III-III of Figure 1 and according to the associated arrows, showing a guide of the above device relative to an internal core barrel passed through the device.
- the method according to the invention is intended for the detection and / or measurement of at least one geophysical parameter on a core 1 (FIG. 1), for example in an oil core.
- a geophysical parameter of this kind can be a natural radioactivity of constituents of the carrot, absorption of the radiation emitted by a known source of radiation, etc.
- the method comprises, during a coring operation with a corer 2, an arrangement, substantially fixed with respect to the corer 2, of a sensor 3 for detecting and / or measuring the parameter concerned, directly downstream, at 4, from the outlet orifice 5 of the core barrel 2 relative to the direction of withdrawal of the core 1 in the immediate vicinity (known to those skilled in the art) of the course of withdrawal of the core 1.
- the senor 3 can be a Nal crystal which detects the part of radiation, from a known source of cesium 137 of 1 millicurie and located in 6, which is not absorbed by the constituents of carrot 1, to determine the part of radiation absorbed by them. A detection and / or measurement of the value of the parameter is therefore carried out by this sensor 3 in one or more places of the core 1 while the latter is removed from the core barrel 2 by known means and / or is returned therein. by these.
- the aim of this procedure may for example be to make the same detection and / or measurement several times in several places along the length of the core 1 which has just been carried out and which is still only in the first manipulations, unlike at p-océdé ante ⁇ laughing, so without being cut and passed r ⁇ e practically vertical position to eg 1 st horizontal position before the above detection / measurement takes place.
- a first treatment of the values of the detection and / or measurement can then also take place directly at the location of the core. ar example in order to sort these values to put in memory or to use them immediately: as explained below.
- the method according to the invention further comprises, simultaneously with the detection and / or measurement mentioned above in 3, a statement of the position of the place corresponding to this detection and / or measurement on the core 1 and, after this reading, a processing thereof for its storage and / or immediate use, for example to determine sections of the core 1 which have particular detection and / or measurement results.
- a selection of a substantially constant pitch between two detection locations can be made so as, for example, to facilitate this mapping between each detection and / or measurement location and this detection and / or measurement or to be able to observe more easily an evolution of it.
- this device 7 comprises a hollow body 10 having two openings 11 and 12 situated opposite one another along a longitudinal axis 13 of the hollow body 10.
- a free passage 14 extends between the openings 11 and 12 and is arranged by with respect to these so that a core 1, enclosed in an internal tube 15 of the core barrel 2, can pass freely through the hollow body 10.
- the device 7 also comprises fixing means 16 for fixing in a removable manner the hollow body 10 to an external tube 17 of the core barrel 2, at the end 22 thereof by which a core 1 enclosed in the internal tube 15 is taken out of the core barrel 2.
- the hollow body 10 is then fixed therein so as to be located, at least for the most part, in the extension of the external tube 17, the longitudinal axes 13, of the hollow body 10, and 18 of the core barrel 2 being substantially coaxial.
- the hollow body 10 comprises at least one sensor 3 for detecting and / or measuring a geophysical parameter to be evaluated on the core 1 to be removed from the corer 2.
- the sensor 3, an example of which is given above, is fixed to the body hollow 10 to be placed in front of the core 1 when the latter is in the free passage 14.
- the aforementioned fixing means 16 may preferably constitute a detachable assembly from the hollow body 10 and comprise (FIG. 2) two flange parts 20 and 21 adapted to the external diameter of the external tube 17 so as to be able to tightly grip this tube 17 in the vicinity of its outlet end 22 from the core 1.
- Connection means 23 and clamping means 24 are arranged between the two flange parts 20 and 21.
- the connection means 23 are formed for example by a connecting cross member 23 which connects them , in an articulated manner, one end of a flange part 20 to a corresponding end of the other flange part 21, so that these flange parts 20, 21 can be moved freely, for clamping and for the release of the end 22, in a plane substantially perpendicular to the longitudinal axis 18.
- the two flange parts 20 and 21 can then be arranged to occupy two relative positions relative to the other, a first in which they enclose ( Figure 1 and 2) securely the outer tube 17 when the device 7 is mounted on the latter, and a second position (not shown) in which the flange parts 20 and 21 are spaced apart from one 'another by a distance greater than the external diameter of the external tube 17, so as to be able to mount the fixing means 16 and therefore the device 7 on the external tube 17 or remove them.
- the flange parts 20 and 21 and the cross-member 23 each have an internal boss 25 of which an internal periphery surface is adapted to said external diameter of the external tube 17, the three internal bosses 25 being regularly distributed around the outer tube 17.
- the aforementioned tightening means 24 are for example a screw 26 passing through a smooth hole 27 formed in the free end of the flange part 21, and in a threaded hole 28 formed in the free end of the flange part 20.
- the screw 26, the smooth 27 and threaded 28 holes have, in the assembled state, connection means 23 and tightening means 24 on the external tube 17, a common axis which is parallel to the aforementioned plane, perpendicular to the longitudinal axis 18, and which extends on the opposite side of the outer tube 17 relative to the cross member 23, preferably parallel to the latter.
- connection means 30 are provided, which may include projecting elements 31 and recesses 32 arranged on the hollow body 10 and for example on the flange parts 20 and 21 as shown in FIG. 2.
- a projection 31 is in each case a cantilever pin 31 fixed to the flange part 20 or 21 so that the two pins 31 are coaxial along a diameter of the outer tube 17, when the means fastening 16 enclose it in the assembled state of the device 7, and so that the free end of each pin 31 is turned towards the longitudinal axis 18.
- each pin 31 and the corresponding opening 32 Preferably, play is provided between each pin 31 and the corresponding opening 32, for reasons explained below.
- connection by the aforementioned form can be released, in the case of the example above, by unscrewing the screws 26 so as to be able to separate the flange parts 20 and 21 from one another, in order to loosen their grip on the outer tube 17, until the pins 31 can be removed from the openings 32.
- the hollow body 10 in order to be able to optionally mount or dismount the corer 2 the hollow body 10, the latter present in the assembly, in cross section at its axis 13, a U-shape.
- a longitudinal side 35 ( Figures 1 and 3) of the hollow body 10 is indeed open over its entire dimension taken parallel to the longitudinal axis 13 and over its transverse dimension at least equal to the diameter outer of the core 1 or preferably of the inner tube 15.
- the device 7 can be brought onto the core barrel 2 or removed from it by a movement transverse to the axis 13 or 18 so that the core 1 or the inner tube 15 can partially come out i of the core barrel 2 thus easily reach the free passage 14 from the outside of the hollow body 10 or vice versa, during assembly of the latter on the core barrel 2 or respectively of a disassembly.
- the device 7 further comprises guide means 36 for the hollow body 10 relative to the internal tube 15.
- These guide means 36 comprising rollers 37 whose axis of rotation is each time in a plane perpendicular to the longitudinal axis 13, are arranged so as to bear on the external surface of the inner tube 15 above mentioned when the latter is disposed in the hollow body 10, in the measurement and / or detection position.
- the axes of rotation of two rollers 37A can be fixed relative to the hollow body 10 and can be located in the same plane perpendicular to the longitudinal axis 13, preferably opposite the open longitudinal side. 35, with respect to the longitudinal axis 13.
- two other rollers 37B can be provided on a support 38 mounted on the hollow body 10 by means, on the one hand, of a hinge 39 and, on the other hand, a screw 40 and a compression spring 41, so as to be able to close or open by this support 38 and the rollers 37B the longitudinal side 35.
- the axes of rotation of the two rollers 37B are in planes perpendicular to the longitudinal axis 13 and situated on either side of the common perpendicular plane of the axes of the rollers 37A.
- the projections on this latter plane of the rollers 37A and 37B are distributed over 360 ° around the projection of the inner tube 15 on this same plane.
- the guide rollers 37 are located at the end of the hollow body 10 away from the core barrel 2 in the assembled state of the device 7 on the core barrel 2.
- the senor 3 formed by a Nal crystal is connected to a photomultiplier 50 for detecting rays. gamma emitted by core 1 or for the measurement of these rays absorbed by this core 1.
- the sensor 3 can be connected by the photomultiplier 50 to a unit 51 for processing the signals from the sensor 3 and this processing unit 51 can be connected to a transmitter 52 for transmission.
- a transmitter 52 for transmission for example wireless VHF, which is arranged to transmit over a distance of 50 to 100 m the processed signals and which is incorporated in the device 7.
- the transmitter 52 via its antenna 52A is then tuned to a transmission receiver wireless (not shown) arranged to receive the processed signals transmitted and to transmit them to a user.
- the aforementioned transmitter 52 and receiver are each a combined transceiver and are arranged to be able to further control from the receiver (not shown), via the transmitter 52, the processing unit 51.
- a radioactive source 6 can be arranged in the hollow body 10 to radiate toward the core 1.
- the above-mentioned sensor can then be arranged to measure the absorption of the radiation from the source 6 by the core 1.
- a second sensor 53 can be mounted in the hollow body 10 to measure natural radiation from the core 1. This sensor 53 is then also connected to the processing unit 51 which, in this case, is arranged to also process signals from the second sensor 53 and to transmit them as above for their use away from the drilling platform where the coring takes place and the use of the device 7.
- the device 7 preferably comprises its own batteries 55 for supplying the aforementioned electronic measuring, detection, processing, transmission, etc. means.
- the internal tube 17 of the core barrel 2 can for example be blocked, in the rotation table 60 (FIG. 1) of the drilling platform, by wedges wedges 61.
- the upper end 62 of the inner tube 15 can be gripped by known means 63, in order to remove this inner tube 15 and the core 1 from the drilled well.
- These gripping means 63 are for example suspended from a cable of a winch (not shown).
- the hollow body 10 can be brought transversely to the axis 18, when the support 38 is pivoted to release the open longitudinal side 35, and the hollow body 10 is placed on the upper end 22 of the external tube 17 to be there fixed by the fixing means 16.
- a damping washer 64 (FIG. 1) can be arranged between the hollow body 10 and the above-mentioned upper end 22.
- the detection and / or measurement, signal processing and transmission apparatuses can be engaged to carry out the measurements and / or detection of parameters, their processing, possibly their storage in a memory incorporated in the device 7 and / or their remote transmission.
- the aforementioned winch is started to remove the inner tube 15 and the core 1 which it carries. Measurements and / or detections are carried out. If necessary, the inner tube 15 and the core 1 are lowered into the outer tube 17 to be pulled out again so that it can be repeated the measurements and / or detections either on the descent or on the descent and the ascent, and this can be repeated as often as desired, at a desired speed, preferably constant.
- the device 7 can be removed by reversing the order of the operations mentioned above and the core 1 can then be processed in the usual way, for other analyzes. useful in the case of drilling of the kind described above.
- a coded wheel system for the displacement and / or the distance traveled by the internal tube 15 can be used to correlate a measurement location with the corresponding measurement, this system being able to be connected to the winch or be in direct contact with the inner tube 15.
- a screen may be provided to close the longitudinal side 35 and thereby avoid an unbalanced influence of the device 7 and / or the environment on the core 1 intended for detection and / or measurement.
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)
- Geophysics And Detection Of Objects (AREA)
- Sampling And Sample Adjustment (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9400537A BE1008302A3 (fr) | 1994-05-30 | 1994-05-30 | Procede et dispositif de detection ou et/ou de mesure d'au moins un parametre geophysique sur une carotte. |
BE9400537 | 1994-05-30 | ||
PCT/BE1995/000048 WO1995033123A1 (fr) | 1994-05-30 | 1995-05-16 | Procede et dispositif de detection et/ou de mesure d'au moins un parametre geophysique sur une carotte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0710319A1 true EP0710319A1 (fr) | 1996-05-08 |
EP0710319B1 EP0710319B1 (fr) | 1998-01-28 |
Family
ID=3888178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95918479A Expired - Lifetime EP0710319B1 (fr) | 1994-05-30 | 1995-05-16 | Procede et dispositif de detection et/ou de mesure d'au moins un parametre geophysique sur une carotte |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0710319B1 (fr) |
AT (1) | ATE162877T1 (fr) |
BE (1) | BE1008302A3 (fr) |
CA (1) | CA2167825C (fr) |
DE (1) | DE69501539T2 (fr) |
NO (1) | NO308869B1 (fr) |
RU (1) | RU2142052C1 (fr) |
WO (1) | WO1995033123A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2996305A1 (fr) * | 2012-10-02 | 2014-04-04 | Segem S A S | Systeme de prelevement et de mesure en continu |
WO2015172818A1 (fr) | 2014-05-13 | 2015-11-19 | Bauer Maschinen Gmbh | Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau |
RU2666280C1 (ru) * | 2017-05-11 | 2018-09-06 | Публичное акционерное общество "Акционерная нефтяная Компания "Башнефть" | Способ увязки результатов замеров фильтрационно-ёмкостных свойств керна и геофизических исследований по глубине скважины |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4854163A (en) * | 1987-09-28 | 1989-08-08 | Amoco Corporation | Beltless core conveyor system for wellsite analysis |
-
1994
- 1994-05-30 BE BE9400537A patent/BE1008302A3/fr not_active IP Right Cessation
-
1995
- 1995-05-16 WO PCT/BE1995/000048 patent/WO1995033123A1/fr active IP Right Grant
- 1995-05-16 EP EP95918479A patent/EP0710319B1/fr not_active Expired - Lifetime
- 1995-05-16 DE DE69501539T patent/DE69501539T2/de not_active Expired - Lifetime
- 1995-05-16 CA CA002167825A patent/CA2167825C/fr not_active Expired - Lifetime
- 1995-05-16 AT AT95918479T patent/ATE162877T1/de not_active IP Right Cessation
- 1995-05-16 RU RU96103629A patent/RU2142052C1/ru active
-
1996
- 1996-01-29 NO NO960367A patent/NO308869B1/no not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9533123A1 * |
Also Published As
Publication number | Publication date |
---|---|
NO960367L (no) | 1996-01-29 |
NO308869B1 (no) | 2000-11-06 |
NO960367D0 (no) | 1996-01-29 |
DE69501539D1 (de) | 1998-03-05 |
RU2142052C1 (ru) | 1999-11-27 |
CA2167825A1 (fr) | 1995-12-07 |
ATE162877T1 (de) | 1998-02-15 |
WO1995033123A1 (fr) | 1995-12-07 |
CA2167825C (fr) | 2001-12-11 |
EP0710319B1 (fr) | 1998-01-28 |
DE69501539T2 (de) | 1998-06-10 |
BE1008302A3 (fr) | 1996-04-02 |
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