CN102628962A - Seismic acquisition observation system for underground microseismic detection - Google Patents
Seismic acquisition observation system for underground microseismic detection Download PDFInfo
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Abstract
The invention relates to a seismic acquisition observation system for underground microseismic detection, so that a problem that an existing system can not form a three-dimensional image can be solved. The provided system is formed by a plurality of concentric circles by taking a wellhead as a center O, thereby forming a circle-shaped structure. The number of receiving points arranged on each circumference varies and is generally increased with the increase of the circumference, so that uniformity of distribution of the receiving points can be kept. Received seismic data are in a circle-shaped three-dimensional structure with uniform arrangement, so that the attribute of a seismic wave can be displayed in a three-dimensional mode. Besides, the number of the receiving points arranged on the circumference doubles the number of the receiving points at an innermost ring and the arrangement is uniform; and a radial structure is formed while the circle-shaped structure is formed, wherein each radial ray can be used as a two-dimensional profile to display the attribute of the seismic wave. According to the invention, effectiveness and economy of the underground microseismic detection are fully considered; and the arrangement is simple and can be realized easily; a three-dimensional image can be formed; and the received seismic data are in the circle-shaped three-dimensional structure with the uniform arrangement, so that the attribute of the seismic wave can be displayed in a three-dimensional mode.
Description
Technical field
The present invention relates to a kind of microseismic detection recording geometry, particularly relate to a kind of seismic event that carries out the down-hole microseismic detection and gather recording geometry.
Technical background
When seismic prospecting; In order to obtain systematically to follow the trail of the seismologic record of zone of interest significant wave; Must suitably arrange the mutual alignment with selective excitation point and acceptance point in the open air during data collection, the position relation is called recording geometry between this description shot point and the acceptance point and between arranging and arranging.
It is a kind of more special recording geometry that the seismic event of down-hole microseismic detection is gathered recording geometry, the microseism that its excitaton source breaks and produces during for reservoir fracturing, be distributed in well around, have randomness.And energy a little less than, signal to noise ratio (S/N ratio) is very low.The observing system that adopts at present is radial, is the center with the well head, is radial by some surveys line and stretches out.Its advantage is to lay simply, realizes that easily shortcoming is that decentering point is far away more, and circular arc direction spacing is big more, can not form 3-D view.
Summary of the invention
The object of the invention is to overcome the above-mentioned defective of prior art, provides a kind of seismic event that carries out the down-hole microseismic detection that can form 3-D view to gather recording geometry.Being that the seismic event that detects the down-hole microseism is gathered recording geometry, also is a kind of method that produces seismic event when gathering underground fracture.
The present invention gathers recording geometry, the seismic event that produces when being used for detecting the well pressure break for a kind of seismic event that carries out the down-hole microseismic detection.This recording geometry is center of circle O with the well head, is made up of a plurality of concentric circless, forms cyclic structure, and the reception that is provided with on each circumference is counted can be different, generally increases along with the increase of circumference, is evenly distributed to keep acceptance point.
Acceptance point distributes by following requirements: we define the individual concentrically ringed radius of i be Ri (i=1,2 ..., max), then have: minimum radius of a circle is R1, maximum radius of a circle is Rmax; The girth of i circle is Ci=2 π Ri, i circle and i+1 radius of a circle difference DRi=R (i+1)-Ri.
Be defined in and lay Mi acceptance point and evenly distribution on i the circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...) then have: the arc length DLi=2 π Ri/Mi between 2 acceptance points.The definition shortest arc is long to be DLmin, and long arc is long to be then have DLmax: DLmin≤DLi≤DLmax.
According to above definition, we have provided the seismic event that detects the down-hole microseism and have gathered the recording geometry (see figure 1): 1. be made up of a plurality of concentric circless, form cyclic structure; I concentrically ringed radius be Ri (i=1,2 ... Max), minimum radius of a circle is R1, and maximum radius of a circle is Rmax; 2. the radial direction spacing of acceptance point (abbreviation span) is DRi; 3. the spacing of acceptance point circumferencial direction (abbreviation arc distance) is DLi, and DLmin≤DLi≤DLmax is arranged.4. lay Mi acceptance point and evenly distribution on i circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...).
The present invention has taken into full account the validity and the economy of down-hole microseismic detection, lays simply, realizes easily; It can form 3-D view; The geological data that receives is the round three-dimensional structure, and laying is more even, can carry out the attribute that 3 D stereo shows seismic event.
As optimization, the geological data of reception is a cyclic structure, can show each circle as a two dimensional cross-section attribute of seismic event.
As optimization; Owing to defined the acceptance point number laid on the circumference for 2 multiples of inner ring (inner ring except) and evenly distribute; When having cyclic structure, have radial structure, can show each bar ray as a two dimensional cross-section attribute of seismic event.
As optimization, can be constant at radial direction spacing (abbreviation span) DRi of acceptance point, but the spacing of acceptance point circumferencial direction (abbreviation arc distance) DLi then can not be constant, can only limit within the specific limits, and DLmin≤DLi≤DLmax is arranged.
As optimization; The present invention detects the seismic event of down-hole microseism and gathers recording geometry, is the regular geometry under a kind of ideal situation, during practical application in the open air; Owing to receive the restriction of surficial geology condition and ground surface environment condition, can make reasonable adjustment according to actual conditions.
As optimization, said system is the regular geometry under a kind of ideal situation, during practical application in the open air, owing to receive the restriction of surficial geology condition and ground surface environment condition, and can be not too regular, promptly span DRi and arc distance DLi all can change within the specific limits.DRmin≤DRi≤DRmax is arranged; DLmin≤DLi≤DLmax, wherein DRmin and DRmax are respectively the minimum and the maximum diameter distance of permission, and DLmin and DLmax are respectively the minimum and the maximum arc distance of permission.
The present invention carries out the seismic event of down-hole microseismic detection and gathers validity and the economy that recording geometry has taken into full account the down-hole microseismic detection; And lay simple; Realize that easily can form 3-D view, the geological data of reception is the round three-dimensional structure; And laying is more even, can carry out the attribute that 3 D stereo shows seismic event.
Description of drawings
Fig. 1 is that the seismic event of down-hole of the present invention microseismic detection is gathered the recording geometry synoptic diagram.
Embodiment
As shown in the figure, the present invention gathers recording geometry, the seismic event that produces when being used for detecting the well pressure break for a kind of seismic event that carries out the down-hole microseismic detection.This recording geometry is center of circle O with the well head, is made up of a plurality of concentric circless, forms cyclic structure, and the reception that is provided with on each circumference is counted can be different, generally increases along with the increase of circumference, is evenly distributed to keep acceptance point.
We define i concentrically ringed radius be Ri (i=1,2 ..., max), then have: minimum radius of a circle is R1, maximum radius of a circle is Rmax; The girth of i circle is Ci=2 π Ri, i circle and i+1 radius of a circle difference DRi=R (i+1)-Ri.
Be defined in and lay Mi acceptance point and evenly distribution on i the circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...) then have: the arc length DLi=2 π Ri/Mi between 2 acceptance points.The definition shortest arc is long to be DLmin, and long arc is long to be then have DLmax: DLmin≤DLi≤DLmax.
According to above definition, we have provided the seismic event that detects the down-hole microseism and have gathered the recording geometry (see figure 1): 1. be made up of a plurality of concentric circless, form cyclic structure; I concentrically ringed radius be Ri (i=1,2 ... Max), minimum radius of a circle is R1, and maximum radius of a circle is Rmax; 2. the radial direction spacing of acceptance point (abbreviation span) is DRi; 3. the spacing of acceptance point circumferencial direction (abbreviation arc distance) is DLi, and DLmin≤DLi≤DLmax is arranged.4. lay Mi acceptance point and evenly distribution on i circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...).
The geological data that seismic event of the present invention is gathered the recording geometry reception is the round three-dimensional structure, and laying is more even, can carry out the attribute that 3 D stereo shows seismic event.
The geological data that seismic event of the present invention is gathered the recording geometry reception is a cyclic structure, can show each circle as a two dimensional cross-section attribute of seismic event.
Seismic event of the present invention is gathered recording geometry owing to defined the acceptance point number laid on the circumference for 2 multiples of inner ring (inner ring except) and evenly distribute; When having cyclic structure; Have radial structure, can show each bar ray as a two dimensional cross-section attribute of seismic event.
Seismic event of the present invention is gathered recording geometry can be constant at radial direction spacing (abbreviation span) DRi of acceptance point; But the spacing of acceptance point circumferencial direction (abbreviation arc distance) DLi then can not be constant; Can only limit within the specific limits, and DLmin≤DLi≤DLmax is arranged.
It is the regular geometry under a kind of ideal situation that seismic event of the present invention is gathered recording geometry, during practical application in the open air, owing to receive the restriction of surficial geology condition and ground surface environment condition, can make reasonable adjustment according to actual conditions.
It is the regular geometry under a kind of ideal situation that seismic event of the present invention is gathered recording geometry; During practical application in the open air; Since receive the restriction of surficial geology condition and ground surface environment condition, can be not too regular, and promptly span DRi and arc distance DLi all can change within the specific limits.DRmin≤DRi≤DRmax is arranged; DLmin≤DLi≤DLmax, wherein DRmin and DRmax are respectively the minimum and the maximum diameter distance of permission, and DLmin and DLmax are respectively the minimum and the maximum arc distance of permission.
Instance:
If: R1=50m; Rmax=2000m; DR=25m; DLmin=20m; DLmax=40m; N=8.
Then have:
1. recording geometry is made up of 79 concentric circless, and smallest circle radius R 1 is 50m, and greatest circle radius R max is 2000m, and the smallest circle girth is 314m, and the greatest circle girth is 12560m,
2. the radial direction spacing of acceptance point (abbreviation span) DR is 25m;
3. the spacing of acceptance point circumferencial direction (abbreviation arc distance) is DLi, and 20m≤DLi≤40m is arranged
4. evenly lay 8 acceptance points on the 1st circumference, evenly lay 16 acceptance points on the 2nd～3 circumference; Evenly lay 32 acceptance points on the 4th～7 circumference; Evenly lay 64 acceptance points on the 8th～15 circumference; Evenly lay 128 acceptance points on the 16th～31 circumference; Evenly lay 256 acceptance points on the 32nd～64 circumference; Evenly lay 512 acceptance points on the 65th～79 circumference.
5. whole recording geometry is laid with 18856 acceptance points.
Laying situation on each concentric circles is seen table 1.
Table 1: recording geometry parameter list
Claims (8)
1. a seismic event that carries out the down-hole microseismic detection is gathered recording geometry; It is characterized in that system is center of circle O with the well head; Be made up of a plurality of concentric circless, form cyclic structure, the reception that is provided with on each circumference is counted can be different; Generally increase, be evenly distributed to keep acceptance point along with the increase of circumference.
2. according to the said system of claim 1, it is characterized in that said acceptance point distributes by following requirement: define i concentrically ringed radius and be Ri (i=1,2 ..., max), then have: minimum radius of a circle is R1, maximum radius of a circle is Rmax; The girth of i circle is Ci=2 π Ri, i circle and i+1 radius of a circle difference DRi=R (i+1)-Ri;
Be defined in and lay Mi acceptance point and evenly distribution on i the circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...) then have: the arc length DLi=2 π Ri/Mi between 2 acceptance points; The definition shortest arc is long to be DLmin, and long arc is long to be then have DLmax: DLmin≤DLi≤DLmax;
According to above definition, provide system: 1. form, form cyclic structure by a plurality of concentric circless, i concentrically ringed radius be Ri (i=1,2 ..., max), minimum radius of a circle is R1, maximum radius of a circle is Rmax; 2. the radial direction spacing of acceptance point is DRi; 3. the arc length spacing of acceptance point circumferencial direction is DLi, and DLmin≤DLi≤DLmax is arranged.4. lay Mi acceptance point and evenly distribution on i circumference, and Mi=N * 2
m(N=3,4,5,6,7,8, M=0,1,2,3 ...).
3. according to claim 1 or 2 said systems, it is characterized in that the geological data that receives is the round three-dimensional structure, and laying is more even, can carries out the attribute that 3 D stereo shows seismic event.
4. according to claim 1 or 2 said systems, it is characterized in that the geological data that receives is a cyclic structure, can show each circle as a two dimensional cross-section attribute of seismic event.
5. according to claim 1 or 2 said systems; The acceptance point number that it is characterized in that laying on the circumference is for 2 multiples of inner ring and evenly distribute; When having cyclic structure, have radial structure, can show each bar ray as a two dimensional cross-section attribute of seismic event.
6. according to claim 1 or 2 said systems, it is characterized in that to be constant, but the space D Li of acceptance point circumferencial direction then can not be constant, can only limit within the specific limits, and DLmin≤DLi≤DLmax is arranged at the radial direction space D Ri of acceptance point.
7. according to claim 1 or 2 said systems, it is characterized in that it being the regular geometry under a kind of ideal situation, during practical application in the open air,, can make reasonable adjustment according to actual conditions owing to receive the restriction of surficial geology condition and ground surface environment condition.
8. according to the said system of claim 7; It is characterized in that said reasonable adjustment is: during practical application in the open air; Because receive the restriction of surficial geology condition and ground surface environment condition, span DRi and arc distance DLi all can change within the specific limits, i.e. DRmin≤DRi≤DRmax; DLmin≤DLi≤DLmax, wherein DRmin and DRmax are respectively the minimum and the maximum diameter distance of permission, and DLmin and DLmax are respectively the minimum and the maximum arc distance of permission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110341081.8A CN102628962B (en) | 2011-11-02 | 2011-11-02 | Seismic acquisition observation system for underground microseismic detection |
| PCT/CN2012/001476 WO2013063866A1 (en) | 2011-11-02 | 2012-10-31 | Specialized digital seismometer measuring microtremors in wells |
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| CN201110341081.8A CN102628962B (en) | 2011-11-02 | 2011-11-02 | Seismic acquisition observation system for underground microseismic detection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063866A1 (en) * | 2011-11-02 | 2013-05-10 | 中国科学院地质与地球物理研究所 | Specialized digital seismometer measuring microtremors in wells |
| CN103147800A (en) * | 2013-04-01 | 2013-06-12 | 北京市市政工程研究院 | Tunnel monitoring measurement early warning method represented by using tree ring |
| CN103760595A (en) * | 2014-01-13 | 2014-04-30 | 中国科学院武汉岩土力学研究所 | Method for arranging microquake real-time monitoring sensors in large-diameter surge shaft excavation process |
| CN105467436A (en) * | 2015-12-17 | 2016-04-06 | 东北大学 | Method for arranging micro-shock sensors in construction of ultra-deep vertical shaft |
| CN105676279A (en) * | 2016-01-18 | 2016-06-15 | 长江地球物理探测（武汉）有限公司 | Earthquake reflection data collection method with concentric-circle equivalent shot-geophone distance |
| CN106154315A (en) * | 2016-08-24 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of high-density seismic acquisition method symmetrically and evenly |
Families Citing this family (1)
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| CN105388513B (en) * | 2015-10-15 | 2017-12-05 | 中国石油天然气集团公司 | The method for building up and device of earthquake-capturing observation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168997C (en) * | 1999-09-15 | 2004-09-29 | 埃克森美孚上游研究公司 | Remote reservoir resistivity mapping |
| US20090225629A1 (en) * | 2003-11-21 | 2009-09-10 | Ray Clifford H | Method and system for transmission of seismic data |
| CN101942993A (en) * | 2010-09-01 | 2011-01-12 | 大港油田集团有限责任公司 | Inter-well potential tomography imaging system and method while drilling |
-
2011
- 2011-11-02 CN CN201110341081.8A patent/CN102628962B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1168997C (en) * | 1999-09-15 | 2004-09-29 | 埃克森美孚上游研究公司 | Remote reservoir resistivity mapping |
| US20090225629A1 (en) * | 2003-11-21 | 2009-09-10 | Ray Clifford H | Method and system for transmission of seismic data |
| CN101942993A (en) * | 2010-09-01 | 2011-01-12 | 大港油田集团有限责任公司 | Inter-well potential tomography imaging system and method while drilling |
Non-Patent Citations (1)
| Title |
|---|
| 熊翥: "我国物探技术的进步及展望", 《石油地球物理勘探》, vol. 39, no. 6, 31 December 2004 (2004-12-31), pages 745 - 750 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063866A1 (en) * | 2011-11-02 | 2013-05-10 | 中国科学院地质与地球物理研究所 | Specialized digital seismometer measuring microtremors in wells |
| CN103147800A (en) * | 2013-04-01 | 2013-06-12 | 北京市市政工程研究院 | Tunnel monitoring measurement early warning method represented by using tree ring |
| CN103147800B (en) * | 2013-04-01 | 2014-10-22 | 北京市市政工程研究院 | Tunnel monitoring measurement early warning method represented by using tree ring |
| CN103760595A (en) * | 2014-01-13 | 2014-04-30 | 中国科学院武汉岩土力学研究所 | Method for arranging microquake real-time monitoring sensors in large-diameter surge shaft excavation process |
| CN103760595B (en) * | 2014-01-13 | 2015-07-22 | 中国科学院武汉岩土力学研究所 | Method for arranging microquake real-time monitoring sensors in large-diameter surge shaft excavation process |
| CN105467436A (en) * | 2015-12-17 | 2016-04-06 | 东北大学 | Method for arranging micro-shock sensors in construction of ultra-deep vertical shaft |
| CN105676279A (en) * | 2016-01-18 | 2016-06-15 | 长江地球物理探测（武汉）有限公司 | Earthquake reflection data collection method with concentric-circle equivalent shot-geophone distance |
| CN105676279B (en) * | 2016-01-18 | 2017-12-08 | 长江地球物理探测（武汉）有限公司 | A kind of earthquake reflective data acquisition method using geophone offsets such as concentric circles |
| CN106154315A (en) * | 2016-08-24 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of high-density seismic acquisition method symmetrically and evenly |
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