CN2682206Y - Borehole geophone string - Google Patents
Borehole geophone string Download PDFInfo
- Publication number
- CN2682206Y CN2682206Y CN 200420033012 CN200420033012U CN2682206Y CN 2682206 Y CN2682206 Y CN 2682206Y CN 200420033012 CN200420033012 CN 200420033012 CN 200420033012 U CN200420033012 U CN 200420033012U CN 2682206 Y CN2682206 Y CN 2682206Y
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- Prior art keywords
- wave detector
- borehole
- string
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a borehole geophone string, which belongs to the technical field of the manufacture of the equipments collecting the earthquake wave signals. The utility model alters that the prior art completes the arranging of one point once in the borehole, and then raises the gun to excite. A surface geophone receives the earthquake wave collecting mode of the earthquake wave signal of one point. The geophones are connected in series together according to a definite interval by the transmission cable of the utility model, in order to form the geophone string receiving the borehole earthquake wave signals. Because the geophones is connected in series to be arranged in the various places of the borehole at a definite interval according to the requirement of the construction design, the signals of different horizons can be obtained once. Moreover, the collected information has higher correctness and dependability, so the utility model can be used for the petroleum seismic exploration, the geologic survey, the engineering exploration of city construction plan, and the geologic exploration survey of the superficial layer geology of the high-rise building and the hydraulic engineering.
Description
Technical field: a kind of well geophone string, be used for oil seismic exploration, the exploration investigation in ore deposit geological survey, physical construction planning engineering exploration, highrise building and quality ore deposit, hydraulic engineering shallow-layer ground, belong to the technical field that the seismic signal collecting device is made.
Background technology: at present do not have the string that similar down-hole receives seismic signal carrying out micro logging technology fashion, the method that adopts is to excite in the well, surface geophone receives, mainly contain two kinds, first kind is the pointwise setting, point-by-point excitation, that is: once the explosive of a point is delivered to desired depth, finish the back that is provided with of a point and just play gun excitation, surface geophone receives the seismic signal of a point, and then the explosive of another point delivered to the predetermined degree of depth, and being provided with and finishing the back gun excitation that recurs, surface geophone is the receiving record seismic signal again; Second kind is to be provided with afterwards earlier to excite, that is: earlier explosive is delivered to one by one each predetermined shot point position of down-hole, and be fixed on this position, after all shot point settings are finished, excites one by one again, and seismic signal is gathered and write down to surface geophone one by one;
The shortcoming of two kinds of methods of prior art is: the actual blast shot point degree of depth and the working design degree of depth goodness of fit are poor, because the position of each shot point of down-hole, the stratum, the difference of environment, the energy that blast excites the back to be produced, frequency significant wave characteristic effect is also inequality, therefore the uniformity of seismic data can not get guaranteeing, the method that pointwise is provided with point-by-point excitation causes the borehole wall to collapse easily, and the setting of back can not be carried out, the method of back secondary is set because well head has tens pairs of connecting lines earlier, the more or less freely numbering mistake that causes connecting line, and cause exciting the obstructed of wrong and circuit, short circuit or leaky, the method of prior art also wastes time and energy in force in addition, and labour intensity is very big.
The novel purpose of this use is a kind of well geophone string that can wave detector be serially connected by certain distance by cable with waterproof characteristics of design.
Summary of the invention: the technical solution of the utility model is: selecting the transmission cable with 96 heart yearns for use is the main body that is connected of connection, installation, fixed pickup and transmission seismic signal, consider the condition of down-hole, for wave detector designs twice waterproof, one isolation layer, and wave detector is designed to the spindle-type shape, wave detector is provided with one by one and is fixed on the transmission cable with 96 heart yearns according to certain spacing distance, have in the design of the upper end of cable to connect the well head cable connector that receives instrument, there is the weight coupling hook in being convenient to the string band gone into the well the lower end.
What this use was novel is a little: because wave detector is placed in the different location of down-hole by serial connection by certain interval by the working design requirement, so once just can not obtain the signal of different layers position, and the data of gathering has higher accuracy and reliability, simultaneously, owing to be the signals collecting of once carrying out the multilayer position, so simplified the program of construction greatly, reduced the intensity of work.
Marginal data:
Fig. 1 is the novel connection diagram of this use.
Fig. 2 uses the structure for amplifying schematic diagram of novel wave detector 3 for this.
Specific implementation method: provide most preferred embodiment of the present invention below in conjunction with accompanying drawing: the utility model comprises wave detector 3, transmission cable 2, cable connector 1 and weight hook 4; Selecting the transmission cable 2 with 96 pairs of heart yearns for use is the connector of connection, installation, fixed pickup 3 and transmission seismic signal, the upper end stube cable joint 1 of string, be convenient to connect the signal receiver device, the a plurality of wave detectors 3 of middle connection, according to the different well depth degree of depth, spacing between each wave detector 3 is 0.5m-2m, and the lower end of string is provided with a weight hook 4; The output line of each wave detector 3 is connected with corresponding transmission signal line on the transmission cable 2, and marshalling in order, be arranged on the instrument bar of cable output end; Consider the special environment condition of down-hole, the centre of wave detector 3 is wave detector cores 10, skin at wave detector core 10 is provided with resistance to compression containment vessel 5, is disposed with inner waterproofing topping 9, heat-barrier coating 8, outer fish tail and waterproof layer 7 and 6 between wave detector core 10 and resistance to compression containment vessel 5; Go into the well for ease of wave detector 3, wave detector 3 is designed to the spindle-type shape; During construction, cable is connected on the signal receiver device by cable connector 1, again weight is hung on the weight hook 4 of string tail end, then string is put into well, string is brought into the down-hole under the gravity of weight, after reaching desired depth, start the string pushing device, make string be close to the borehole wall, explosive source is gathered seismic wave then, after signals collecting is finished, discharge pushing device, the string of down-hole is dropped to the new degree of depth gather the seismic wave signal once more, or propose well head and put into new well and implement new construction operation.
Claims (2)
1. a well geophone string is made of wave detector and transmission cable, it is characterized in that:
A. connect a plurality of wave detectors on described transmission cable, the spacing between each wave detector is 0.5m-2m, and at the upper end of string stube cable joint, the lower end of string is provided with a weight hook;
B. corresponding transmission signal line is connected, organizes into groups on the output line of described wave detector and the transmission cable, is arranged on the instrument bar of cable output end;
C. the centre of described wave detector is the wave detector core, and the skin of wave detector core is provided with the resistance to compression containment vessel, is disposed with inner waterproofing topping, heat-barrier coating, outer fish tail and waterproof layer between wave detector core and resistance to compression containment vessel.
2. a kind of well geophone string according to claim 1 is characterized in that: described wave detector is a spindle-type shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033012 CN2682206Y (en) | 2004-02-27 | 2004-02-27 | Borehole geophone string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420033012 CN2682206Y (en) | 2004-02-27 | 2004-02-27 | Borehole geophone string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2682206Y true CN2682206Y (en) | 2005-03-02 |
Family
ID=34607371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420033012 Expired - Fee Related CN2682206Y (en) | 2004-02-27 | 2004-02-27 | Borehole geophone string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2682206Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520440A (en) * | 2012-01-13 | 2012-06-27 | 重庆地质仪器厂 | Multi-channel borehole geophone string and manufacturing method thereof |
-
2004
- 2004-02-27 CN CN 200420033012 patent/CN2682206Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520440A (en) * | 2012-01-13 | 2012-06-27 | 重庆地质仪器厂 | Multi-channel borehole geophone string and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA PETROLEUM GROUP CHUANQING DRILLING ENGINEER Free format text: FORMER OWNER: SICHUAN PETROLEUM ADMINISTRATION Effective date: 20081114 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081114 Address after: Overlooking the green road Chengdu city Sichuan province 1 No. 3 company Chuanqing drilling technology information office, zip code: 610051 Patentee after: Chuanqing Drilling Engineering Co., Ltd. of China National Petroleum Corporation Address before: Patent Office of No.1 Petroleum Bureau, Sichuan, Chengdu Province: 610051 Patentee before: Sichuan Petroleum Administration |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050302 Termination date: 20130227 |