CN104793256B - A kind of microgravity acquisition method - Google Patents
A kind of microgravity acquisition method Download PDFInfo
- Publication number
- CN104793256B CN104793256B CN201510107501.4A CN201510107501A CN104793256B CN 104793256 B CN104793256 B CN 104793256B CN 201510107501 A CN201510107501 A CN 201510107501A CN 104793256 B CN104793256 B CN 104793256B
- Authority
- CN
- China
- Prior art keywords
- gravity
- point
- general
- microgravity
- observation
- 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.)
- Active
Links
Abstract
The embodiments of the invention provide a kind of microgravity acquisition method, methods described includes：The observation station in target work area is determined, the observation station includes gravity base point, gravity auxiliary magnet and the general point of gravity；100% is carried out to the general point simultaneously using at least two gravimeters in very first time threshold value and comes and goes repetitive observation；The general observing unit of gravity observed by the observed pattern is obtained, is the general point observation subelement of gravity by general observing unit Symmetric Decomposition of the gravity；Calculate the gravity value of each general point in the general point observation subelement of each gravity；Calculate the average value of each general all gravity values of point.Present invention method improves the acquisition precision of target work area microgravity.
Description
Technical field
The invention belongs to geophysical exploration technology, more particularly to a kind of microgravity acquisition method.
Background technology
The gravity anomaly that oil-gas reservoir is produced is faint, typically all in microgal level.Oil-gas reservoir (especially deep-seated oil gas reservoir) is entered
Row time shift microgravity is monitored, and can be changed by the oil-gas reservoir microgravity monitored, be understood the distribution situation of oil-gas reservoir.Oil-gas reservoir
Development time can reach that the Gravity changer produced every year is just fainter more than 20 years.Therefore, time shift is carried out to oil-gas reservoir
Microgravity monitoring needs the acquisition method of higher precision.
The land gravimetric prospecting method used at present, by taking petroleum industry gravimetric prospecting as an example, the standard of execution is《It is land heavy
Power exploration engineering code (SY/T5819-2010)》, it monitors and not applied to time shift microgravity, still micro- not heavy on time shift
The industry technology code of power collection, parameter and ins and outs more not on time shift microgravity acquisition technique.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of microgravity acquisition method, to improve the acquisition precision of microgravity.
In order to solve the above technical problems, the embodiment of the present application provides what a kind of microgravity acquisition method was realized in：
A kind of microgravity acquisition method, methods described includes：
The observation station in target work area is determined, the observation station includes gravity base point, gravity auxiliary magnet and the general point of gravity；
100% round repetitive is carried out in very first time threshold value to the general point simultaneously using at least two gravimeters to see
Survey, observed pattern is started with the order of " gravity base point-gravity auxiliary magnet-gravity base point ", with " gravity base point-gravity auxiliary magnet-
The order of gravity base point " terminates；
The general observing unit of gravity observed by the observed pattern is obtained, by general observing unit of the gravity symmetrically minute
Solve and observe subelement for the general point of gravity, the general point observation subelement of gravity is opened with same gravity base point or gravity auxiliary magnet
Begin, and terminated with same gravity base point or gravity auxiliary magnet；
Calculate the gravity value of each general point in the general point observation subelement of each gravity；
Calculate the average value of each general all gravity values of point.
Preferably, in an embodiment of the present invention, the gravity auxiliary magnet is apart no more than first with the gravity base point
Distance threshold, the depth displacement of the gravity auxiliary magnet and the gravity base point is not less than second distance threshold value.
Preferably, in an embodiment of the present invention, first distance threshold is not more than 40 meters, the second distance threshold value
Not less than 15 centimetres.
Preferably, in an embodiment of the present invention, the spud pile of surface level is set up in the observation station.
Preferably, in an embodiment of the present invention, the spud pile includes long 40 centimetres, wide 40 centimetres, thick 10 centimetres
Concrete stake.
Preferably, in an embodiment of the present invention, the conformity error of any two gravimeters is missed no more than first
Poor threshold value.
Preferably, in an embodiment of the present invention, first error threshold is not more than 0.008 × 10-5Rice/square the second.
Preferably, in an embodiment of the present invention, the very first time threshold value is not more than 5 hours.
Preferably, in an embodiment of the present invention, when being observed using the gravimeter to observation station, when observing every time
Between be not less than the second time threshold, and continuously record 3 gravity values, the difference of gravity value is not more than the first threshold described in any two
Value.
Preferably, in an embodiment of the present invention, second time threshold is not less than 3 minutes, and the first threshold is not
More than 0.005 × 10-5Rice/square the second.
Preferably, in an embodiment of the present invention, before the average value for calculating each general all gravity values of point, also
Including：
Calculate the standard variance and average value of each general all gravity values of point；
When the standard variance is less than Second Threshold, removes gravity value and arranged with the average value difference according to numerical values recited
The gravity value corresponding to general point in preceding 3rd threshold value；
When the standard variance is not less than Second Threshold, the general point is observed again.
Preferably, in an embodiment of the present invention, the Second Threshold is not more than 0.008 × 10-5Rice/square the second.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the flow chart of method provided in an embodiment of the present invention；
Fig. 2 is observed pattern schematic diagram of the embodiment of the present invention to general point.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
, can be using the high observation of the gravimeter of more than two of matching degree in order to obtain the time shift microgravity value of higher precision
The general point of gravity, gravity auxiliary magnet and the general point of gravity, general gravity can be obtained by the observation procedure of 100% reciprocating formula
Observing unit, it is in follow-up data handling procedure, the gravimetric observation unit Symmetric Decomposition is general into several general gravity
Point observation subelement, calculates the gravity value of each general point in the general point observation subelement of each general gravity respectively.As described in Figure 1,
Specific method flow includes：
Step S101：Determine the observation station in target work area, the observation station includes gravity base point, gravity auxiliary magnet and again
The general point of power.
Before microgravity data acquisition is carried out to target work area, it is thus necessary to determine that the observation station in target work area, the observation station
Including gravity base point, gravity auxiliary magnet and the general point of gravity.The gravity base point is used to check the null drift of gravimeter, determined
Suitable zero correction coefficient, the accumulation for reducing error and raising gravity measurement precision.The gravity auxiliary magnet is used to aid in institute
State the microgravity observation of gravity base point, it is therefore an objective to obtain high-precision increment size on the gravity base point.In the embodiment of the present invention
In, a gravity base point can be only determined, the gravity base point is as the Fixed Initial Point of general gravity value of gravity, it is necessary to by high-precision
Spend microgravity observation.
The gravity base point selection is having a good transport service, is indicating the firm stability region of obvious, ground, in the embodiment of the present invention
In, the gravity base point can be selected by the road in target work area.The gravity auxiliary magnet is with the gravity base point at a distance of not
More than the first distance threshold, the depth displacement of the gravity auxiliary magnet and the gravity base point is not less than second distance threshold value.It is described
First distance threshold is not more than 40 meters, and the second distance threshold value is not less than 15 centimetres.Surface water is set up in the observation station
Flat spud pile.The spud pile includes long 40 centimetres, wide 40 centimetres, thick 10 centimetres concrete stake.In addition, in some months or
Need to observe the observation station again after several years, period and the center of observation station can be marked on the spud pile,
The observation station can be accurately found during to observe next time.
Step S102：It is simultaneously past to the general point progress 100% using at least two gravimeters in very first time threshold value
Repetitive observation is returned, observed pattern is started with the order of " gravity base point-gravity auxiliary magnet-gravity base point ", with " gravity base point-
The order of gravity auxiliary magnet-gravity base point " terminates.
When carrying out microgravimetry, point general to gravity is observed since gravity base point, then one by one, finally with gravity
Basic point terminates.In embodiments of the present invention, before the general point observation of gravity is carried out, basic point observation can be carried out, i.e., using " gravity base
The observed pattern of point-gravity auxiliary magnet-gravity base point ".Specifically, can be on the gravity base point and the gravity auxiliary magnet
Three gravity values are respectively read, when the difference of the gravity value of gravity base point twice is less than some threshold value, it is believed that gravimeter is in just
Normal working condition, can carry out the general point observation of gravity.Similarly, will also be with " gravity base after to gravity, general point observation terminates
The observed pattern of point-gravity auxiliary magnet-gravity base point " terminates.
In embodiments of the present invention, 100% is carried out to the general point and comes and goes repetitive observation, observation schematic diagram such as Fig. 2 institutes
Show, from " gravity base point-gravity auxiliary magnet-gravity base point ", is observed along the general line pointwise of gravity, then along backtracking, pointwise
Observation, is finally terminated with " gravity base point-gravity auxiliary magnet-gravity base point ".Specific observation order includes：" gravity base point (t1
When observe) general general point the 2- ...-gravity of point 1- gravity of-gravity auxiliary magnet 1 (being observed during t2)-gravity base point (being observed during t3)-gravity
General point 1- gravity base points (being observed during the tt3)-gravity of the general point 2- gravity of general point the n- ...-gravity of general point n- gravity auxiliary magnet 2- gravity is auxiliary
Help a little 1 (being observed during tt2)-gravity base point (being observed during tt1) ".
, can be using extremely in order to obtain gravimetric data as much as possible of same time when being observed to each observation station
Few two gravimeters are observed simultaneously.In order to ensure the uniformity of each gravimeter reading, Consistency test is carried out to the gravimeter,
First error threshold is no more than with the conformity error for determining any two gravimeters.First error threshold is not more than
0.008 × 10-5 meter/square seconds.
In order to improve the stability and accuracy of each observation station gravity value, observation station is observed using the gravimeter
When, each observation time is not less than the second time threshold, and continuously records 3 gravity values, the difference of gravity value described in any two
Value is not more than first threshold.Second time threshold be not less than 3 minutes, the first threshold be not more than 0.005 × 10-5 meters/
Square second.Usually, can be to the observation station when the difference for having two in 3 gravity values of record is less than first threshold
Again observe.Although ensureing that each observation station is not less than the observation time of the second time threshold, gravity can pushing away with the time
Move and change, in order to reduce the change of microgravity in whole observation process, can be limited to the time of whole observation process
In one time threshold.For example, the very first time threshold value is not more than 3 hours.
Step S103：The general observing unit of gravity observed by the observed pattern is obtained, the general point of the gravity is observed
Unit Symmetric Decomposition is the general point observation subelement of gravity, and the general point observation subelement of gravity is with same gravity base point or again
Power auxiliary magnet starts, and is terminated with same gravity base point or gravity auxiliary magnet.
The general observing unit of gravity observed by the observed pattern is obtained, described general observing unit of gravity includes all
All gravity value readings of general point, wherein, the gravity value reading includes the reading of the general point of gravity of at least two gravimeter observation
Several, each general point of gravity observes the reading of 3 times and the reading for the general point of gravity for coming and going observation.In order to improve each follow-up gravity
The accuracy of general gravity value, described general observing unit Symmetric Decomposition of gravity is the general point observation subelement of gravity.The gravity
General point observation subelement is started with same gravity base point or gravity auxiliary magnet, and auxiliary with same gravity base point or gravity
Help and a little terminate.For example, general observing unit of gravity can be decomposed into the general point observation subelement of 3 gravity in step 102, including
" the general general point of point n- gravity auxiliary magnet 2- gravity of general general point the 2- ...-gravity of point 1- gravity of gravity base point (being observed during t1)-gravity
The general point 1- gravity base points (being observed during tt1) of the general point 2- gravity of n- ...-gravity ", " the general point of gravity auxiliary magnet 1 (being observed during t2)-gravity
The general point 1- gravity of the general general point 2- gravity of general point the n- ...-gravity of point n- gravity auxiliary magnet 2- gravity of general point the 2- ...-gravity of 1- gravity is auxiliary
Help a little 1 (being observed during tt2) ", " the general general point n- gravity of general point the 2- ...-gravity of point 1- gravity of gravity base point (being observed during t3)-gravity is auxiliary
Help the general point 1- gravity base points (being observed during tt3) of the general point 2- gravity of general point the n- ...-gravity of point 2- gravity ".
Step S104：Calculate the gravity value of each general point in the general point observation subelement of each gravity.
The gravity value of each general point in the general point observation subelement of each gravity is calculated, computational methods include conventional gravity and surveyed
The general line computation mode visited.
Before the average value for calculating each general all gravity values of point, in addition to：
Calculate the standard variance and average value of each general all gravity values of point；
When the standard variance is less than Second Threshold, removes gravity value and arranged with the average value difference according to numerical values recited
The gravity value corresponding to general point in preceding 3rd threshold value；
When the standard variance is not less than Second Threshold, the general point is observed again.
In embodiments of the present invention, if observed using two gravimeters, and three weights are read to each general point every time
Force value data, then by the decomposition of general subelement of three gravity, after calculating, each general point will have 36 gravity values.
According to above-mentioned steps, the standard variance and average value of 36 gravity values of general point are calculated, the Second Threshold is not more than 0.008
×10-5Rice/square the second.When the standard variance is less than Second Threshold, gravity value is removed with the average value difference according to number
Value size comes the gravity value corresponding to the general point in preceding 3rd threshold value, and the 3rd threshold value is no less than 6.Usually, institute is worked as
When stating standard variance not less than Second Threshold, the general point can observe and calculate again.
Step S105：Calculate the average value of each general all gravity values of point.
Calculate the average value of each general remaining gravity value of point.
The above-mentioned technical proposal of introduction of the embodiment of the present invention has the advantages that：Observed simultaneously by many gravimeters
Each observation station, the gravity value for handling each general point is calculated using the method for Symmetric Decomposition, the collection of target work area microgravity is improved
Precision, while improving the reliability of time shift microgravity data.
Above-described embodiment method will be illustrated by a specific application scenarios below.
In the monitoring experiment to certain western gas reservoir, according to above-described embodiment method step, before work is acquired, paving
If the gravity base point and gravity auxiliary magnet in work area, gravity base point and the gravity auxiliary magnet shares for whole work area.Wherein, gravity
Basic point choice is in work area and by road, at the 30m of gravity auxiliary magnet laying in its vicinity, gravity auxiliary magnet and gravity base point
Depth displacement reach 30cm.Gravity base point and gravity auxiliary magnet use long 40cm, width 40cm, thickness 10cm concrete stake.In gravity
Basic point and gravity auxiliary magnet do permanent marker, wherein, the numbering of gravity base point is " KL2-G9 ", and the numbering of gravity auxiliary magnet is
“KL2-F9”。
Preferably go out 4 from 8 CG-5 gravimeters, match two-by-two.Assembled pair using two CG-5 gravimeters as one, they
Conformity error is respectively 0.007 × 10-5Rice/square the second and 0.008 × 10-5Rice/square the second.Using the gravimeter after pairing,
Two gravimeters come and go repetitive observation method using 100% to general line together and observed.Gravimeter is in gravity base point, gravity auxiliary magnet
Or gravity it is general point observation when, each observation time be no less than 3 minutes, continuously record 3 differences be not more than 0.005 × 10-5Rice/flat
The gravity value of square second.When being unsatisfactory for above-mentioned condition, continue to observe, until observe continuous record 3 be more or less the same in 0.005 ×
10-The gravity value of rice/square second.
General line is observed, the general line acquisition method of gravity base point auxiliary magnet is opened and closed using three-fold symmetry, i.e.,：Each gravity
Observing unit is when opening basic point, closing basic point, using " KL2-G9 (observes)-KL2-F9 and-KL2-G9 (is observed) during t2 (during t3 during t1
Observation)-general general point the 2- ... of point 1--general point n- auxiliary magnets-general point n- ...-general point 1-KL2-G9 of general point 2- (observe)-KL2- during tt3
F9 (observes)-KL2-G9 (being observed during tt1) during tt2 " observed pattern implementation observation.
The general observing unit of gravity observed aforesaid way, be decomposed into according to symmetric mode " KL2-G9 (being observed during t1)-
The general general point 1-KL2-G9 (being observed during tt1) of the general point 2- ... of point 1--general point n- auxiliary magnets-general point n- ...-general point 2- ", " KL2-F9
(being observed during t2)-general point 1- general point 2- ...-general point n- auxiliary magnets-general point n- ...-general point 1-KL2-F9 of general point 2- (are seen during tt2
Survey) ", " KL2-G9 (being observed during the t3)-general point 2- ... of general point 1--general point n- auxiliary magnets-general point n- ...-general point 1-KL2- of general point 2-
The general point observation subelement of three gravity of G9 (being observed during tt3) ".Follow-up point observation subelement general to each gravity uses conventional articulated gravity
The general line computation mode of exploration calculates gravity value.
General Gravity calculation, including variance is calculated and general gravity value is calculated.By above-described embodiment method point general to gravity
Calculate, be combined into 3 units and calculated.The each general point of every gravimeter has 18 gravity values after calculating, and two gravimeters are total to
There are 36 gravity values.Calculate the standard variance and average value of this 36 gravity values, when the standard variance be less than 0.008 ×
10-5During meter/square the second, remove 6 gravity values and the maximum reading of average value difference, and ask for the standard of remaining 30 gravity values
Variance, and it is used as using the average value of this 30 gravity values the final gravity value of the general point of the gravity.When the data standard of 36 values is inclined
Difference is more than 0.008 × 10-5During meter/square the second, then the general point of the gravity needs to observe and calculate again.
By using the acquisition method of the microgravity of the embodiment of the present invention, relative to the acquisition method of prior art, the work
The time shift microgravity data precision in area is by 0.014 × 10-5ms-2Bring up to 0.007 × 10-5ms-2, it will be apparent that improve time shift micro-
The reliability of gravity data.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (12)
1. a kind of microgravity acquisition method, it is characterised in that methods described includes：
The observation station in target work area is determined, the observation station includes gravity base point, gravity auxiliary magnet and the general point of gravity；
100% is carried out to the general point simultaneously using at least two gravimeters in very first time threshold value and comes and goes repetitive observation,
Observed pattern is started with the order of " gravity base point-gravity auxiliary magnet-gravity base point ", with " gravity base point-gravity auxiliary magnet-weight
The order of power basic point " terminates；
The general observing unit of gravity observed by the observed pattern is obtained, is by general observing unit Symmetric Decomposition of the gravity
The general point observation subelement of gravity, the general point observation subelement of gravity is started with same gravity base point or gravity auxiliary magnet,
And terminated with same gravity base point or gravity auxiliary magnet；
Calculate the gravity value of each general point in the general point observation subelement of each gravity；
Calculate the average value of each general all gravity values of point.
2. microgravity acquisition method according to claim 1, it is characterised in that the gravity auxiliary magnet and the gravity base
Point is not less than second distance threshold at a distance of the first distance threshold, the depth displacement of the gravity auxiliary magnet and the gravity base point is no more than
Value.
3. microgravity acquisition method according to claim 2, it is characterised in that first distance threshold is not more than 40
Rice, the second distance threshold value is not less than 15 centimetres.
4. microgravity acquisition method according to claim 1, it is characterised in that surface level is set up in the observation station
Spud pile.
5. microgravity acquisition method according to claim 4, it is characterised in that the spud pile includes long 40 centimetres, wide
40 centimetres, thick 10 centimetres concrete stake.
6. microgravity acquisition method according to claim 1, it is characterised in that the uniformity of any two gravimeters
Error is no more than the first error threshold.
7. microgravity acquisition method according to claim 6, it is characterised in that first error threshold is not more than
0.008×10-5Rice/square the second.
8. microgravity acquisition method according to claim 1, it is characterised in that it is small that the very first time threshold value is not more than 5
When.
9. microgravity acquisition method according to claim 1, it is characterised in that carried out using the gravimeter to observation station
During observation, each observation time is not less than the second time threshold, and continuously records 3 gravity values, gravity value described in any two
Difference be not more than first threshold.
10. microgravity acquisition method according to claim 9, it is characterised in that second time threshold is not less than 3 points
Clock, the first threshold is not more than 0.005 × 10-5Rice/square the second.
11. microgravity acquisition method according to claim 1, it is characterised in that all heavy in each general point of the calculating
Before the average value of force value, in addition to：
Calculate the standard variance and average value of each general all gravity values of point；
When the standard variance is less than Second Threshold, before removal gravity value comes with the average value difference according to numerical values recited
The gravity value corresponding to general point in 3rd threshold value；
When the standard variance is not less than Second Threshold, the general point is observed again.
12. microgravity acquisition method according to claim 11, it is characterised in that the Second Threshold is not more than 0.008
×10-5Rice/square the second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107501.4A CN104793256B (en) | 2015-03-12 | 2015-03-12 | A kind of microgravity acquisition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107501.4A CN104793256B (en) | 2015-03-12 | 2015-03-12 | A kind of microgravity acquisition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104793256A CN104793256A (en) | 2015-07-22 |
| CN104793256B true CN104793256B (en) | 2017-10-17 |
Family
ID=53558217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107501.4A Active CN104793256B (en) | 2015-03-12 | 2015-03-12 | A kind of microgravity acquisition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104793256B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625421A (en) * | 2008-07-08 | 2010-01-13 | 中国石油集团东方地球物理勘探有限责任公司 | Three-dimensional gravity magnetic multiple acquisition method |
| CN101625422A (en) * | 2008-07-08 | 2010-01-13 | 中国石油集团东方地球物理勘探有限责任公司 | Method for monitoring time-lapse microgravity oil and gas reservoirs by fixed field method |
| CN102236109A (en) * | 2010-05-06 | 2011-11-09 | 中国石油天然气集团公司 | Method for correcting interference of variance coefficient in gravity and magnetic interference zone |
| WO2012001388A2 (en) * | 2010-07-02 | 2012-01-05 | Arkex Limited | Gravity survey data processing |
-
2015
- 2015-03-12 CN CN201510107501.4A patent/CN104793256B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625421A (en) * | 2008-07-08 | 2010-01-13 | 中国石油集团东方地球物理勘探有限责任公司 | Three-dimensional gravity magnetic multiple acquisition method |
| CN101625422A (en) * | 2008-07-08 | 2010-01-13 | 中国石油集团东方地球物理勘探有限责任公司 | Method for monitoring time-lapse microgravity oil and gas reservoirs by fixed field method |
| CN102236109A (en) * | 2010-05-06 | 2011-11-09 | 中国石油天然气集团公司 | Method for correcting interference of variance coefficient in gravity and magnetic interference zone |
| WO2012001388A2 (en) * | 2010-07-02 | 2012-01-05 | Arkex Limited | Gravity survey data processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104793256A (en) | 2015-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103339627B (en) | Assessment surface data | |
| CN108710732A (en) | A kind of visualization assessment of shield cutter service phase abrasion and prediction technique | |
| CN105526925B (en) | A kind of regional land subsidence level monitoring net optimum design method | |
| CN101625422B (en) | Method for monitoring time-lapse microgravity oil and gas reservoirs by fixed field method | |
| CN104881547B (en) | A kind of error analysis method for directional well well track | |
| CN103926617A (en) | Seam hole reservoir body detection method and detection device | |
| CN103038670A (en) | Processing geophysical data | |
| CN113155109B (en) | Supervision control method, system, equipment and medium for super high-rise building engineering measurement | |
| CN102236108A (en) | Three-dimensional terrain correcting method for magnetic surface | |
| CN106610502A (en) | A buried communication optical cable ground location rapid and accurate search method | |
| Gottsmann et al. | 50 years of steady ground deformation in the Altiplano-Puna region of southern Bolivia | |
| CN109869140B (en) | Adjacent well distance measuring method based on magnetic field gradient | |
| CN107831536A (en) | Desert surface seismic data processing floating datum method for building up | |
| CN104316961A (en) | Method for obtaining geological parameters of weathered layer | |
| CN104632206B (en) | A kind of oil well logging index bed determines method and device | |
| CN104793256B (en) | A kind of microgravity acquisition method | |
| CN112378376A (en) | Seabed deformation combined monitoring method based on sensing array and inclinometer | |
| Mariita | The gravity method | |
| CN115420778B (en) | Quick investigation and positioning method and system for shallow soil pollution | |
| CN108592949B (en) | Azimuth drilling tool magnetic interference correction method and system | |
| US20180073870A1 (en) | Method and system for measuring subsidence | |
| CN106289241A (en) | Utilize positioning correction method and the device of magnetic signature | |
| CN1949000B (en) | Method of measuring polarization rate using common copper electrode | |
| CN113189660B (en) | Method and system for observing array type land time-varying gravity and gradient field | |
| CN114200538B (en) | Ground stress direction determining method, device, storage medium and computer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |