EP1627240A2 - Dispositif et procede de mesure d'ondes sismiques - Google Patents
Dispositif et procede de mesure d'ondes sismiquesInfo
- Publication number
- EP1627240A2 EP1627240A2 EP04742530A EP04742530A EP1627240A2 EP 1627240 A2 EP1627240 A2 EP 1627240A2 EP 04742530 A EP04742530 A EP 04742530A EP 04742530 A EP04742530 A EP 04742530A EP 1627240 A2 EP1627240 A2 EP 1627240A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrophone
- module
- resin
- seismic waves
- geophone
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 4
- 229920005989 resin Polymers 0.000 claims abstract description 29
- 239000011347 resin Substances 0.000 claims abstract description 29
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 206010001488 Aggression Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
Definitions
- the present invention relates to devices for measuring seismic waves comprising at least one hydrophone.
- a device for measuring seismic waves intended to be placed permanently in a borehole and comprising at least one module comprising at least one hydrophone.
- the fluid in which the hydrophone is placed can also be aggressive with respect to the sensor. It is often oil. This poses problems of sealing and / or porosity of the hydrophone vis-à-vis the surrounding fluid. Damage to the hydrophone causes a deterioration in the quality of the measurements, and therefore a misinterpretation of the physical characteristics of the subsoil area that is being explored. ...
- the devices of the prior art are relatively fragile and difficult to handle due to the presence of the fluid pockets around the hydrophone. It is understood that the above-mentioned problems of tightness and brittleness increase with the number of hydrophones. It is particularly difficult to produce vertical measurement devices, and more particularly devices that have to reach relatively high measurement depths, which include a large number of sensors including hydrophones.
- the invention proposes to overcome these drawbacks.
- the invention provides a device for measuring seismic waves placed in a borehole, comprising a module including at least one hydrophone and a coupling agent which fills the space between the module and the wall of the borehole and immobilizes the module, characterized in that the module includes a resin protection element in which the hydrophone is embedded, the resin being capable of transmitting the pressure variations resulting from seismic waves.
- Such a device suitably comprises at least one geophone embedded in a protective element made of hard resin itself embedded in the protective element of the hydrophone.
- the invention also relates to a method for measuring seismic waves in an area of the earth's subsoil, in which the measurement is carried out by means of at least one device as defined above.
- FIG. 2 schematically shows a compact view of a module according to Figure 1;
- FIG. 3 shows schematically a module according to Figure 2 showing more particularly the electrical conductors;
- FIG. 4 schematically shows an exterior view of a module as shown in Figures 1-3;
- FIG. 5 shows schematically a device according to the invention comprising a plurality of modules.
- FIG. 1 schematically represents an exploded view of the interior of a possible embodiment of a module intended for use in a device for measuring seismic waves as shown in FIG. 5.
- the measuring device comprises at least one module 1 comprising at least one hydrophone 2.
- the module comprises at least one geophone 3. It also comprises a transformer 12 connected to the hydrophone 2 Instead of the transformer 12, it is also possible to use a pre-amplifier, which however requires an electrical supply, therefore an additional conductor per hydrophone.
- the geophone 3 is embedded in a protective element formed by an overmolding of hard resin 4, which can be a two-component polyurethane resin formed from a resin and a hardener and typically having a Shore D hardness of the order of 90.
- the transformer 12 is embedded in the same resin.
- the geophone 3 is placed near the hydrophone 2 in order to obtain, as is known, a good correlation between the measurements made by the geophone 3 and the hydrophone 2.
- the distance between the geophone and the hydrophone is order of magnitude of the decimetre for example.
- the hydrophone 2 has a substantially cylindrical shape with a circular base.
- the basics of the cylinder form the sensitive elements which oscillate according to the pressure variations in the environment in which they are placed.
- the hydrophone 2 transforms the vibrations of the bases into an electrical signal which is applied to processing means, not shown, arranged for example on the surface.
- the hydrophone 2 is embedded in a protective element consisting of a resin 11.
- the resin 11 has on the one hand sufficient strength to adequately protect the hydrophone mechanically, and on the other hand an ability to transmit variations, of pressure comparable to that of a liquid.
- the hydrophone 2 can, thanks to the presence of the resin 11, measure the pressure variations in the surrounding medium.
- the resin 11 is further characterized by its resistance to external aggressions, in particular of a chemical nature, and protects the hydrophone from the action of chemical agents.
- a two-component polyurethane resin formed from polyol and isocyanate can be used as resin 11.
- Such a resin has, as is desirable for transmitting the pressure, a density of 1.1 close to that of water and a Shore A1 / A15 hardness of the order of 80, relatively low.
- the resin 11 is placed directly in contact with a coupling agent such as cement.
- FIGS 1 to 3 schematically show a preferred embodiment of the interior of a module 1 according to which each module 1 comprises a tubular frame 5 serving as support for each hydrophone, and a possible geophone.
- the tubular frame is a hollow tube 5 in which the hydrophone 2 is placed in particular.
- the geophone 3 and / or the transformer associated with the hydrophone can be placed in the tube 5.
- the tube 5 is substantially cylindrical in shape with a circular base.
- the tube 5 advantageously comprises at one of its ends 13 an outer wall which converges towards the longitudinal axis of the tube 5.
- the tube also has a bore 7 in its wall.
- the axis of the bore 7 is substantially perpendicular to the longitudinal axis of the tube 5 and substantially located in the middle of the tube 5.
- the diameter of each tube 5 is reduced to the maximum, so that each module 1 has a minimum diameter.
- the converging shape placed at the end 13 provides support for the various supply and operating wires of each module, and the bore 7 allows the introduction
- the tube 5 also includes, near the end 13, at least one substantially circular opening 6.
- the tube has two openings 6 opposite one another. The axis passing through each center of the openings 6 is perpendicular to the longitudinal axis of the tube 5.
- the hydrophone 2 is introduced into the tube through one of the openings 6.
- the openings 6 are thus in line with the hydrophone 2 so that the bases of the hydrophone 2 are exposed to the outside in order to be able to pick up the pressure differences resulting from seismic waves.
- the tube 5 has one end 14 opposite the end 13. At the end 14, the transformer 12 associated with the hydrophone and then all or part of the geophone 3 is inserted into the tube 5.
- each module 1 is visible in FIG. 3.
- N The possible modules placed respectively to the right and to the left of the module N are referenced by N + 1 and N-1 respectively.
- the various supply and operating wires 9 of each module 1 can be introduced at the level of the hydrophone 2 through the opening 6 and / or at the level of the geophone 3 through the bore 7
- the wires 9 not used for the module N pass outside the tube 5.
- the wires 9 arrive via a sheath 10 coming from a module N-1. They then pass around the tube 5 of the module N to go either into the openings 6 and / or the bore 7 of the module N, or directly to a sheath 10 which includes all of the wires 9 from the module N.
- the sheath 10 from the module N goes towards the module N + 1 and surrounds the wires from the module N.
- the wires 9 not serving for the module N can for example be pressed against the outside of the tube 5 by adhesive strips 15, or any other means.
- each module 1 is only in contact with the cement 62 by the overmolding of resin 11 and the sheaths 10 protective of the power supply wires 9.
- the geophone 3 and the hydrophone 2 are perfectly protected.
- the overmolding of the resin 11 on the module can be carried out hot or cold.
- the overmolding of the resin 11 covers the respective protective elements in hard resin.
- FIG. 5 shows an example of a permanent seismic wave measurement device placed in a hole or borehole 57 formed in an area 60 of the basement.
- the drilling is suitably substantially vertical.
- the device comprises at least one cable 50 itself comprising at least one module 1.
- the measurement device comprises three cables referenced by 50 and arranged along the borehole 57.
- Each cable 50 comprises at least one measurement module 1 according to Figures 1 to 4.
- the borehole is filled with a coupling agent 62 such as cement which, once hardened, immobilizes the modules.
- the first cable 50 comprises eight modules 1
- the second cable 50 also comprises eight modules 1
- the third cable 50 comprises six modules 1.
- the first two cables 50 measure two components of the seismic waves.
- each module 1 comprises a hydrophone and a vertical geophone.
- the third cable 50 comprises two types of modules different. It comprises four modules 1 measuring two components of the waves and two modules, measuring four components of the waves, located at the end of the cable 50.
- the two-component modules comprise a hydrophone and a vertical geophone.
- the two modules 1 measuring four components are represented diagrammatically in FIG. 5, in a magnifying glass referenced by 16.
- the last two modules 1 located at the end of the third cable 50 comprise a module referenced by 1 and comprising a hydrophone and a vertical geophone, and a module comprising a geophone "X" and a geophone "Y” horizontal along perpendicular X and Y axes.
- the modules 1 and l' are thus close to each other without forming a single module.
- Sockets 56 make it possible to interface between the cables 50 and the surface acquisition device 61.
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0304817A FR2853968B1 (fr) | 2003-04-17 | 2003-04-17 | Dispositif et procede de mesure d'ondes sismiques |
| PCT/FR2004/000950 WO2004095075A2 (fr) | 2003-04-17 | 2004-04-16 | Dispositif et procede de mesure d’ondes sismiques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1627240A2 true EP1627240A2 (fr) | 2006-02-22 |
Family
ID=33041941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04742530A Withdrawn EP1627240A2 (fr) | 2003-04-17 | 2004-04-16 | Dispositif et procede de mesure d'ondes sismiques |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1627240A2 (fr) |
| CA (1) | CA2522406C (fr) |
| FR (1) | FR2853968B1 (fr) |
| WO (1) | WO2004095075A2 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9304217B2 (en) | 2012-03-23 | 2016-04-05 | Cggveritas Services Sa | Retrievable vertical hydrophone cable and method |
| US9568625B2 (en) | 2013-03-08 | 2017-02-14 | Cgg Services Sas | Buried hydrophone with solid or semi-rigid coupling |
| US20140269184A1 (en) * | 2013-03-15 | 2014-09-18 | Cgg Services Sa | Land hydrophone and method |
| CN115629358A (zh) * | 2022-09-26 | 2023-01-20 | 西南民族大学 | 一种储罐腐蚀在线检测机器人空间定位方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0072288A2 (fr) * | 1981-08-11 | 1983-02-16 | Thomson-Csf | Transducteur électroacoustique à polymère piézoélectrique |
| EP1096273A2 (fr) * | 1999-10-29 | 2001-05-02 | Litton Systems, Inc. | Dispositif détecteur acoustique pour l'application sismique dans le puit utilisant une matrice de palpeurs à fibre optique |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2600172B1 (fr) * | 1986-01-17 | 1988-08-26 | Inst Francais Du Petrole | Dispositif d'installation de capteurs sismiques dans un puits de production petroliere |
| FR2640842B1 (fr) * | 1988-12-20 | 1991-07-26 | Thomson Csf | Antenne hydrophonique lineaire modulaire directionnelle |
| DE4226485C1 (de) * | 1992-08-11 | 1993-12-23 | Prakla Seismos Gmbh | Hydrophon, Verfahren zu seiner Herstellung und Verwendung |
| US5392258A (en) * | 1993-10-12 | 1995-02-21 | The United States Of America As Represented By The Secretary Of The Navy | Underwater acoustic intensity probe |
| US5524709A (en) * | 1995-05-04 | 1996-06-11 | Atlantic Richfield Company | Method for acoustically coupling sensors in a wellbore |
| WO1998025437A2 (fr) * | 1996-12-04 | 1998-06-11 | Input/Output, Inc. | Procede de fabrication d'un transducteur acoustique |
-
2003
- 2003-04-17 FR FR0304817A patent/FR2853968B1/fr not_active Expired - Fee Related
-
2004
- 2004-04-16 EP EP04742530A patent/EP1627240A2/fr not_active Withdrawn
- 2004-04-16 CA CA2522406A patent/CA2522406C/fr not_active Expired - Fee Related
- 2004-04-16 WO PCT/FR2004/000950 patent/WO2004095075A2/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0072288A2 (fr) * | 1981-08-11 | 1983-02-16 | Thomson-Csf | Transducteur électroacoustique à polymère piézoélectrique |
| EP1096273A2 (fr) * | 1999-10-29 | 2001-05-02 | Litton Systems, Inc. | Dispositif détecteur acoustique pour l'application sismique dans le puit utilisant une matrice de palpeurs à fibre optique |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2853968B1 (fr) | 2005-06-24 |
| WO2004095075A3 (fr) | 2005-01-06 |
| WO2004095075A2 (fr) | 2004-11-04 |
| FR2853968A1 (fr) | 2004-10-22 |
| CA2522406A1 (fr) | 2004-11-04 |
| CA2522406C (fr) | 2015-07-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20051026 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE NL |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RBV | Designated contracting states (corrected) |
Designated state(s): DE NL |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INSTITUT FRANCAIS DU PETROLE Owner name: CGG SERVICES |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INSTITUT FRANCAIS DU PETROLE Owner name: CGGVERITAS SERVICES SA |
|
| 17Q | First examination report despatched |
Effective date: 20110824 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: INSTITUT FRANCAIS DU PETROLE Owner name: CGGVERITAS SERVICES SA |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CGG SERVICES SA Owner name: INSTITUT FRANCAIS DU PETROLE |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: IFP ENERGIES NOUVELLES Owner name: CGG SERVICES SA |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20181101 |