CA2066414C - Human-portable geophysical energy source - Google Patents
Human-portable geophysical energy sourceInfo
- Publication number
- CA2066414C CA2066414C CA 2066414 CA2066414A CA2066414C CA 2066414 C CA2066414 C CA 2066414C CA 2066414 CA2066414 CA 2066414 CA 2066414 A CA2066414 A CA 2066414A CA 2066414 C CA2066414 C CA 2066414C
- Authority
- CA
- Canada
- Prior art keywords
- earth
- energy
- coupling element
- human
- liquid
- 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.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
- G01V1/04—Details
- G01V1/09—Transporting arrangements, e.g. on vehicles
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A human-portable geophysical energy source is disclosed having an earth-coupling element (12), a means for providing seismic energy (4) operably connected to that earth-coupling element, a lower container (8) and an upper container (8) connected to the means for providing seismic energy, a framework (16) that minimizes vibrations of the liquid by keeping the upper and low-er containers inflexible when they are completely filled with liquid, and a hydraulic pump for filling and removing liquid from the containers. The lower container (8) is located spatially between the earth-coupling element (2) and the means for providing seismic energy (4). The upper container (8) is located spatially above the means for providing seismic energy (4). The liquid pro-vides mass to impart energy through the earth-coupling element (2) and to maintain coupling with the earth.
Description
HUMAN-PORTABLE GEOPHYSICAL ENERGY SOURCE
The present invention relates to a geophysical energy source that can be carried by human beings.
BACKGROUND OF THF INVFNTION
For the past sixty years the petroleum and mining industries have used, controlled, and contained energy sources to gellel~L~ surface and sub-surface vibrations within the earth in order to record, process, and analyæ the-reflected or refracted energy returning from sub-surface geologic strata in the earth for the purpose of e'.~ill~Lillg the most favorable locations to contain or trap petroleum andlor mineral deposits. These, and other efforts, are referred to as geophysical or seismic surveys.
The predominant energy source used for geophysical surveys has historically beenvarious forms of explosives. These products are detonated under controlled and accurately timed conrliti-)n~ whereby the elapsed time required for the energy to propagate through the earth and be reflected or refracted back to sensitive detectors which are deployed on or near the earth's surface in a specific manner. These detectors respond to the reflected energy and the vibrations from the reflected energy cause small ~lt~m~ting current voltages which are amplified and then recorded either by m~c~nic;~l, electronic, or optical means.
~`
... ,,. ~ ,, ,~
From the analysis of the recorded data so obtained, accurate esl;"~tl,s can be effected concerning the shape and depth of sublell~neum strata and the probability of locating petroleum or mineral deposits.
Because the explosive energy is impulsive and non-direction~t, the signal-to-noise ratios of the recorded data are often too poor to accurately estim~te the depth and shape of the desired strata. Consequently, other types of energy sources are often used to improve the signal-to-noise ratios in those areas where explosive energy is not effective.
One such energy source uses oscill~tory, vibrator genera~d energy produced by the combination of servo controlled, hydraulically or pnellm~ti-~lly driven vibrator units. This technique has become the pl~rell-,d geophysical energy source in many areas of the world.
This technique uses large self-propelled vehicles which not only provide propulsion but also provide a large mass to insure that the vibrator units remain coupled to the earth and produce down-ward going energy.
These vibrator units are driven by electronically produced, oscill~tory signals which are amplified by the hydraulic or pneumatic pressure of the unit and causes a baseplate to shake in unison with the applied signals. Normally, these signals are of mathematically coded nature in order that the coded information can be removed from the reflected or refracted energy either before, during, or after the data is recorded Since the vibrator units or other vehicle mounted energy sources must be held to the earth, and the amount of force imparted into the earth is a direct relation to the weight of the ~ass used, these t~pes of sources have not and cannot be used efficiently in ruq~ed, hostile -~ .~^ ., or impassable terrain. Consequently, large areas of land on the earth have not and cannot use many desired techniques.
SUMMARY OF THE INVENTION
An aspect of this invention is as follows:
A human-portable geophysical energy source comprising:
(a) an earth-coupling element;
lo (b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a containing means comprising at least one flexible container connected to said means for providing seismic energy; and (d) a means for filling and removing liquid from said containing means, wherein said liquid provides mass to impart energy through said earth-coupling element and to maintain coupling with the earth.
This unique concept uses the sources in a human-portable mode whereby the source units can be used without the need of large vehicles or carriers to provide propuls-ion and mass. All of the various t~c~niques which require a large mass to provide coupling, or direction, or reaction to convert or transmit energy into the earth are included under this concept.
Preferably, the human-portable geophysical energy source has a framework that minimizes vibrations of the liquid by keeping the containing means inflexible when that containing means is completely filled with liquid.
Preferably, the containing means has an upper container and a flexible lower container. The lower container is above the earth-coupling element, and the upper ~o ~2~01358 I'~ l / U~
The present invention relates to a geophysical energy source that can be carried by human beings.
BACKGROUND OF THF INVFNTION
For the past sixty years the petroleum and mining industries have used, controlled, and contained energy sources to gellel~L~ surface and sub-surface vibrations within the earth in order to record, process, and analyæ the-reflected or refracted energy returning from sub-surface geologic strata in the earth for the purpose of e'.~ill~Lillg the most favorable locations to contain or trap petroleum andlor mineral deposits. These, and other efforts, are referred to as geophysical or seismic surveys.
The predominant energy source used for geophysical surveys has historically beenvarious forms of explosives. These products are detonated under controlled and accurately timed conrliti-)n~ whereby the elapsed time required for the energy to propagate through the earth and be reflected or refracted back to sensitive detectors which are deployed on or near the earth's surface in a specific manner. These detectors respond to the reflected energy and the vibrations from the reflected energy cause small ~lt~m~ting current voltages which are amplified and then recorded either by m~c~nic;~l, electronic, or optical means.
~`
... ,,. ~ ,, ,~
From the analysis of the recorded data so obtained, accurate esl;"~tl,s can be effected concerning the shape and depth of sublell~neum strata and the probability of locating petroleum or mineral deposits.
Because the explosive energy is impulsive and non-direction~t, the signal-to-noise ratios of the recorded data are often too poor to accurately estim~te the depth and shape of the desired strata. Consequently, other types of energy sources are often used to improve the signal-to-noise ratios in those areas where explosive energy is not effective.
One such energy source uses oscill~tory, vibrator genera~d energy produced by the combination of servo controlled, hydraulically or pnellm~ti-~lly driven vibrator units. This technique has become the pl~rell-,d geophysical energy source in many areas of the world.
This technique uses large self-propelled vehicles which not only provide propulsion but also provide a large mass to insure that the vibrator units remain coupled to the earth and produce down-ward going energy.
These vibrator units are driven by electronically produced, oscill~tory signals which are amplified by the hydraulic or pneumatic pressure of the unit and causes a baseplate to shake in unison with the applied signals. Normally, these signals are of mathematically coded nature in order that the coded information can be removed from the reflected or refracted energy either before, during, or after the data is recorded Since the vibrator units or other vehicle mounted energy sources must be held to the earth, and the amount of force imparted into the earth is a direct relation to the weight of the ~ass used, these t~pes of sources have not and cannot be used efficiently in ruq~ed, hostile -~ .~^ ., or impassable terrain. Consequently, large areas of land on the earth have not and cannot use many desired techniques.
SUMMARY OF THE INVENTION
An aspect of this invention is as follows:
A human-portable geophysical energy source comprising:
(a) an earth-coupling element;
lo (b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a containing means comprising at least one flexible container connected to said means for providing seismic energy; and (d) a means for filling and removing liquid from said containing means, wherein said liquid provides mass to impart energy through said earth-coupling element and to maintain coupling with the earth.
This unique concept uses the sources in a human-portable mode whereby the source units can be used without the need of large vehicles or carriers to provide propuls-ion and mass. All of the various t~c~niques which require a large mass to provide coupling, or direction, or reaction to convert or transmit energy into the earth are included under this concept.
Preferably, the human-portable geophysical energy source has a framework that minimizes vibrations of the liquid by keeping the containing means inflexible when that containing means is completely filled with liquid.
Preferably, the containing means has an upper container and a flexible lower container. The lower container is above the earth-coupling element, and the upper ~o ~2~01358 I'~ l / U~
2 ~ 4 container is above both the lower con~iner arld tbe means for providing seismic energ~.
Bo~h container~ may be covered with a protecovc ma~eri~l lo prevent puncn~res.
'rhis concept lses the n~ass and wei~ht provide~ by an ~ccum~ on of li~uid or li~uids. Thesc acçumu~ations of mass providcd by the liquid or liquids, can be movcd, conveycd, or transported by ~ny of the vaAous forms of pumps, centrifuges, flowlines, ~ y feed, sucnon or any o~er Inanner which can cause a liquid or liq-~ids lo move from one loca~on to another. The resul~ing rnass can provide coupling, rcac~on or foree in any direcnon or re~a~on to une cenler of ~ravi~y of the m~ss.
Therefore, the movemenl, conveyance, transpona~ion or couplin$ of the IllaS5 eanbe readily effecte~ b~ conduits,pipes. can.~ls, hoses, tubes or any other de~ice conG~ci~e to the movemen~ of li~uid or li4uids. in ar ~r~ou~h ~he m~jon~v of the areas th~r are no~
s-~ppor~ve ro vehic~ r mo-~emenr.
Advantaaes of usin~ a liquid or ~iquids ~s an easily moved rnas5 inclu~e ( 1 j the liquid can be used a~a~n and a~ain by h~in~ mul~iple uni:s deployed (7) flexible l~nks or conrainers can be useA to hold the licuid or iiqL;ids.
13) tan~s or conr~ ers c~n be s~acked ~o increase Lne mass, ~4) human-p~nable pumps are easily canied ~o move the liquid, (5) all componenrs of thc source units can be designe~ to allow the units to be carried by manpo~ er, (6) min~ cxpend~hle supplies arç rcquued ~nd ~herefore operanons cost is low, and (7) mulriple unirs c~n be supponed b~ a single ser o~ elecrronics.
20664 1 ~
Another aspect of this invention is as follows:
A human-portable geophysical energy source comprising:
(a) a earth-coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a flexible lower container connected to said means for providing seismic energy, wherein said lower container is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling element to the earth;
(d) an upper container connected to said means for providing seismic energy, wherein said upper container is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling element;
(e) a framework that minimizes vibrations of the liquid by keeping said upper and lower containers inflexible when said containing means is completely filled with liquid; and (f) a hydraulic pump for filling and removing liquid from said containers.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to facilitate the understanding of this invention, reference will now be made to the appended drawings of the preferred embodiments of the present invention. The drawings are exemplary only, and should not be construed as limiting the invention.
Figure l i~ a schematic drawing of one emho~iment of the present invention.
Figure 2 is a schematic drawing of the use of more than one human-portable unit.
- 5a -DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In its broadest aspect, the present invention is a human-portable geophysical energy source having an earth-coupling element, a means for providing seismic energy operably connected to the earth-coupling element, a containing means having at least one flexible container connected to the means for providing seismic energy, and means for filling and 20664 1 `-lr removing liquid from the containing means. The liquid provides mass to impart energy through the earth-coupling elempnt and to m~int~in coupling with the earth.
By "earth-coupling elçm~nt," we mean an element that is in direct connPc~ n withthe earth and couples imparted energy to the earth. A typical earth-coupling element is a baseplate.
By "means for providing seismic energy" we mean a device that geneld~s geophyslcal energy that can be imparted to earth.
Preferably, the cn~ in~ means has an upper CQ~ c~ and a lower container. The lower cont~in~r is spatially above the earth-coupling cle- . .e~-t The upper cl~nt~inp~r is spatially above both the lower cont~inPr and the means for providing seismic energy. Both of the cont~iners may be covered with a protective material to prevent punctures.
Preferably, vibrations of the liquid within the containing means can be minimi7Pd by using a framework that keeps the col-l;1i.-il-g means inflexible when the containing means is completely filled with liquid.
Preferably, the means for filling and removing liquid from the containing means is a hydraulic pump.
In one embo liment~ the human-portable geophysical energy source has an earth-coupling element, a means for providing seismic energy operably connected to the earth-coupling element, a flexible lower container connected to the means for providing seismic ~r ~
~'~i, energy, an upper container connçcte-l to the means for providing seismic energy, a framework that minimi7es vibrations of the liquid by keeping the upper and lowercontainers inflexible when the con~ ing means is comrletely f~ed with liquid, and a hydraul* pump for filling and l~,~oving liquid from the cont~l~lg means. The lower c-~nt~inPr is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling elen~nt to the earth. The upper cont~in~r is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling elem~.nt.
The human-portable geophysical energy sources can be used within a system comprising at least two human-portable geophysical energy sources. The multiple sources can be used ~imlllt~neously to incl~;ase the erîec~ive amount of energy at a given location to cancel undesired signal characteristics associated with the use of a single source.
~Itern~tively, the multiple sources can be used sequentially to improve work efficiency and to provide storage reservoirs of the liquid for anticipated work. When used sequentially, the liquid can be moved from one source to the other.
Referring to Figure 1, which is one embodiment of the present invention, a vibrator unit might consist of a baseplate 2 resting on the surface of the earth. This baseplate 2 is connected to vibrator piston assembly 4. Hydraulic actuator element 5 is attached to liquid container reservoir flange 6, which is attached to support frames 16, which holds the liquid reservoir containers 8. The mass of the liquid contained in cont~iners 8 provides the mass to irnpart energy into the earth any time piston 4 is moved by hydraulic or pneumatic pressure and maintains coupling with the earth.
~, .
- 20664 1 ~
Servo valve 1 directs the pressure provided by hydraulic fluid carried from the hydraulic pump 13. Servo valve 1 is modul~ted by a sinusoidal signal from signalgenerator 14 which causes the piston assembly to move in unison with the signal from the signal generator 14 to servo valve 1. This mo~ ted pressure forces the earth to move in proportion to the total force generated by the movement of the upper mass of container 8 and hydraulic ~cn1~tor el~ment 5. Of course, the force is limited by the amount of plessule used.
The liquid or liquids used to fill containers 8 are moved through conduit 9 during the time the con~ain~l~ 8 is being filled. Upon completion of the work at the location the liquid or liquids are moved to the next location through conduit 10 to the next location of work.
Flange 3 connects the vibrator piston assembly 4 to baseplate 2. Upper flange 6 is a connector for hydraulic actuator element 5 and upper container 8.
The above descriptions apply to a typical use of the concept but is not limited to vibrator energy sources alone. Many other energy sources are used by the geophysical industry which require a vehicle to provide propulsion and hold-down mass. This concept will equally apply to these methods. Some of these methods use hydraulic rams, air guns which expel a volume of high pressure gas into a me~ m, vacuum activated rams are sometimes used and many other types of techniques to impart energy into the earth.
In one embodiment, a multitude of seismic sources can be used tied to one sweep qenerator. Figure 2 shcws one such embodIment.
X
.. .
WO 92/01358 PC~/~S91/0~90~
-9- 28S6~
While the present invention has been described ~ith reference to specific embodiments, this application is intended to cover those various changes and substitunons which may be made by those skilled in the art v~ithout depa~ing from the spirit and scope of the appended claims.
Bo~h container~ may be covered with a protecovc ma~eri~l lo prevent puncn~res.
'rhis concept lses the n~ass and wei~ht provide~ by an ~ccum~ on of li~uid or li~uids. Thesc acçumu~ations of mass providcd by the liquid or liquids, can be movcd, conveycd, or transported by ~ny of the vaAous forms of pumps, centrifuges, flowlines, ~ y feed, sucnon or any o~er Inanner which can cause a liquid or liq-~ids lo move from one loca~on to another. The resul~ing rnass can provide coupling, rcac~on or foree in any direcnon or re~a~on to une cenler of ~ravi~y of the m~ss.
Therefore, the movemenl, conveyance, transpona~ion or couplin$ of the IllaS5 eanbe readily effecte~ b~ conduits,pipes. can.~ls, hoses, tubes or any other de~ice conG~ci~e to the movemen~ of li~uid or li4uids. in ar ~r~ou~h ~he m~jon~v of the areas th~r are no~
s-~ppor~ve ro vehic~ r mo-~emenr.
Advantaaes of usin~ a liquid or ~iquids ~s an easily moved rnas5 inclu~e ( 1 j the liquid can be used a~a~n and a~ain by h~in~ mul~iple uni:s deployed (7) flexible l~nks or conrainers can be useA to hold the licuid or iiqL;ids.
13) tan~s or conr~ ers c~n be s~acked ~o increase Lne mass, ~4) human-p~nable pumps are easily canied ~o move the liquid, (5) all componenrs of thc source units can be designe~ to allow the units to be carried by manpo~ er, (6) min~ cxpend~hle supplies arç rcquued ~nd ~herefore operanons cost is low, and (7) mulriple unirs c~n be supponed b~ a single ser o~ elecrronics.
20664 1 ~
Another aspect of this invention is as follows:
A human-portable geophysical energy source comprising:
(a) a earth-coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a flexible lower container connected to said means for providing seismic energy, wherein said lower container is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling element to the earth;
(d) an upper container connected to said means for providing seismic energy, wherein said upper container is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling element;
(e) a framework that minimizes vibrations of the liquid by keeping said upper and lower containers inflexible when said containing means is completely filled with liquid; and (f) a hydraulic pump for filling and removing liquid from said containers.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to facilitate the understanding of this invention, reference will now be made to the appended drawings of the preferred embodiments of the present invention. The drawings are exemplary only, and should not be construed as limiting the invention.
Figure l i~ a schematic drawing of one emho~iment of the present invention.
Figure 2 is a schematic drawing of the use of more than one human-portable unit.
- 5a -DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In its broadest aspect, the present invention is a human-portable geophysical energy source having an earth-coupling element, a means for providing seismic energy operably connected to the earth-coupling element, a containing means having at least one flexible container connected to the means for providing seismic energy, and means for filling and 20664 1 `-lr removing liquid from the containing means. The liquid provides mass to impart energy through the earth-coupling elempnt and to m~int~in coupling with the earth.
By "earth-coupling elçm~nt," we mean an element that is in direct connPc~ n withthe earth and couples imparted energy to the earth. A typical earth-coupling element is a baseplate.
By "means for providing seismic energy" we mean a device that geneld~s geophyslcal energy that can be imparted to earth.
Preferably, the cn~ in~ means has an upper CQ~ c~ and a lower container. The lower cont~in~r is spatially above the earth-coupling cle- . .e~-t The upper cl~nt~inp~r is spatially above both the lower cont~inPr and the means for providing seismic energy. Both of the cont~iners may be covered with a protective material to prevent punctures.
Preferably, vibrations of the liquid within the containing means can be minimi7Pd by using a framework that keeps the col-l;1i.-il-g means inflexible when the containing means is completely filled with liquid.
Preferably, the means for filling and removing liquid from the containing means is a hydraulic pump.
In one embo liment~ the human-portable geophysical energy source has an earth-coupling element, a means for providing seismic energy operably connected to the earth-coupling element, a flexible lower container connected to the means for providing seismic ~r ~
~'~i, energy, an upper container connçcte-l to the means for providing seismic energy, a framework that minimi7es vibrations of the liquid by keeping the upper and lowercontainers inflexible when the con~ ing means is comrletely f~ed with liquid, and a hydraul* pump for filling and l~,~oving liquid from the cont~l~lg means. The lower c-~nt~inPr is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling elen~nt to the earth. The upper cont~in~r is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling elem~.nt.
The human-portable geophysical energy sources can be used within a system comprising at least two human-portable geophysical energy sources. The multiple sources can be used ~imlllt~neously to incl~;ase the erîec~ive amount of energy at a given location to cancel undesired signal characteristics associated with the use of a single source.
~Itern~tively, the multiple sources can be used sequentially to improve work efficiency and to provide storage reservoirs of the liquid for anticipated work. When used sequentially, the liquid can be moved from one source to the other.
Referring to Figure 1, which is one embodiment of the present invention, a vibrator unit might consist of a baseplate 2 resting on the surface of the earth. This baseplate 2 is connected to vibrator piston assembly 4. Hydraulic actuator element 5 is attached to liquid container reservoir flange 6, which is attached to support frames 16, which holds the liquid reservoir containers 8. The mass of the liquid contained in cont~iners 8 provides the mass to irnpart energy into the earth any time piston 4 is moved by hydraulic or pneumatic pressure and maintains coupling with the earth.
~, .
- 20664 1 ~
Servo valve 1 directs the pressure provided by hydraulic fluid carried from the hydraulic pump 13. Servo valve 1 is modul~ted by a sinusoidal signal from signalgenerator 14 which causes the piston assembly to move in unison with the signal from the signal generator 14 to servo valve 1. This mo~ ted pressure forces the earth to move in proportion to the total force generated by the movement of the upper mass of container 8 and hydraulic ~cn1~tor el~ment 5. Of course, the force is limited by the amount of plessule used.
The liquid or liquids used to fill containers 8 are moved through conduit 9 during the time the con~ain~l~ 8 is being filled. Upon completion of the work at the location the liquid or liquids are moved to the next location through conduit 10 to the next location of work.
Flange 3 connects the vibrator piston assembly 4 to baseplate 2. Upper flange 6 is a connector for hydraulic actuator element 5 and upper container 8.
The above descriptions apply to a typical use of the concept but is not limited to vibrator energy sources alone. Many other energy sources are used by the geophysical industry which require a vehicle to provide propulsion and hold-down mass. This concept will equally apply to these methods. Some of these methods use hydraulic rams, air guns which expel a volume of high pressure gas into a me~ m, vacuum activated rams are sometimes used and many other types of techniques to impart energy into the earth.
In one embodiment, a multitude of seismic sources can be used tied to one sweep qenerator. Figure 2 shcws one such embodIment.
X
.. .
WO 92/01358 PC~/~S91/0~90~
-9- 28S6~
While the present invention has been described ~ith reference to specific embodiments, this application is intended to cover those various changes and substitunons which may be made by those skilled in the art v~ithout depa~ing from the spirit and scope of the appended claims.
Claims (7)
1. A human-portable geophysical energy source comprising:
(a) an earth coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a containing means comprising at least one flexible container connected to said means for providing seismic energy; and (d) a means for filling and removing liquid from said containing means, wherein said liquid provides mass to impart energy through said earth-coupling element and to maintain coupling with the earth.
(a) an earth coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c) a containing means comprising at least one flexible container connected to said means for providing seismic energy; and (d) a means for filling and removing liquid from said containing means, wherein said liquid provides mass to impart energy through said earth-coupling element and to maintain coupling with the earth.
2. A human-portable geophysical energy source according to Claim 1 further comprising a framework that minimizes vibrations of the liquid by keeping the containing means inflexible when said containing means is completely filled with liquid.
3. A human-portable geophysical energy source according to Claim 2 wherein said containing means comprises an upper container and a lower container.
4. A human-portable geophysical energy source according to Claim 3 wherein said lower container is spatially above said earth-coupling element, and said upper container is spatially above both said lower container and said means for providing seismic energy.
5. A human-portable geophysical energy source according to Claim 1 wherein said means for filling and removing liquid from said containing means is a hydraulic pump.
6. A human-portable geophysical energy source comprising:
(a) an earth-coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c ) a flexible lower container connected to said means for providing seismic energy, wherein said lower container is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling element to the earth;
(d) an upper container connected to said means for providing seismic energy, wherein said upper container is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling element;
(e) a framework that minimizes vibrations of the liquid by keeping said upper and lower containers inflexible when said containing means is completely filled withliquid; and (f) a hydraulic pump for filling and removing liquid from said containers.
(a) an earth-coupling element;
(b) a means for providing seismic energy operably connected to said earth-coupling element;
(c ) a flexible lower container connected to said means for providing seismic energy, wherein said lower container is located on top of the earth-coupling element and provides hold-down weight to couple the earth-coupling element to the earth;
(d) an upper container connected to said means for providing seismic energy, wherein said upper container is located spatially above the means for providing seismic energy and provides mass to impart energy through the earth-coupling element;
(e) a framework that minimizes vibrations of the liquid by keeping said upper and lower containers inflexible when said containing means is completely filled withliquid; and (f) a hydraulic pump for filling and removing liquid from said containers.
7. A human-portable seismic energy system comprising at least two human-portable geophysical energy sources according to Claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55196890A | 1990-07-12 | 1990-07-12 | |
| US551,968 | 1990-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2066414C true CA2066414C (en) | 1995-09-26 |
Family
ID=24203413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2066414 Expired - Fee Related CA2066414C (en) | 1990-07-12 | 1991-07-11 | Human-portable geophysical energy source |
Country Status (4)
| Country | Link |
|---|---|
| BR (1) | BR9105810A (en) |
| CA (1) | CA2066414C (en) |
| DK (1) | DK30992A (en) |
| WO (1) | WO1992001358A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310128A (en) * | 1964-01-24 | 1967-03-21 | Bolt Associates Inc | Seismic exploration methods and systems |
| US3718206A (en) * | 1971-01-18 | 1973-02-27 | Delta Exploration Co Inc | Amphibious seismic exploration vehicle and method |
| US4008784A (en) * | 1975-06-12 | 1977-02-22 | Seiscom Delta Inc. | Seismic signal source |
| US4020919A (en) * | 1975-11-14 | 1977-05-03 | Standard Oil Company (Indiana) | Seismic source with no reaction mass |
| US4078632A (en) * | 1976-11-08 | 1978-03-14 | Michael P. Breston | Land seismic gas detonator |
| US4108271A (en) * | 1977-06-10 | 1978-08-22 | Bolt Associates, Inc. | Seismic land source |
| US4739857A (en) * | 1981-11-27 | 1988-04-26 | Atlantic Richfield Company | Seismic source using self-propelled projectile |
| US4597464A (en) * | 1982-05-25 | 1986-07-01 | Bolt Technology Corporation | Method and system for well velocity shooting and vertical seismic profiling |
| US4712641A (en) * | 1984-03-19 | 1987-12-15 | Bolt Technology Corporation | Method and system for generating shear waves and compression waves in the earth for seismic surveying |
| US4739859A (en) * | 1986-04-10 | 1988-04-26 | Bolt Technology Corporation | Method and apparatus for reducing the stretch of an elastomeric diaphragm of a land seismic source |
-
1991
- 1991-07-11 CA CA 2066414 patent/CA2066414C/en not_active Expired - Fee Related
- 1991-07-11 BR BR919105810A patent/BR9105810A/en not_active Application Discontinuation
- 1991-07-11 WO PCT/US1991/004904 patent/WO1992001358A1/en active Application Filing
-
1992
- 1992-03-06 DK DK030992A patent/DK30992A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK30992D0 (en) | 1992-03-06 |
| DK30992A (en) | 1992-05-12 |
| BR9105810A (en) | 1992-08-25 |
| WO1992001358A1 (en) | 1992-01-23 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |