CN200996998Y

CN200996998Y - VSP underground micro-wave detecter with sidewall contact device

Info

Publication number: CN200996998Y
Application number: CN 200620133927
Authority: CN
Inventors: 黄双宁; 杜小龙; 秦自耕
Original assignee: China National Petroleum Corp
Current assignee: China National Petroleum Corp
Priority date: 2006-09-28
Filing date: 2006-09-28
Publication date: 2007-12-26
Anticipated expiration: 2016-09-28

Abstract

A mini-VSP well seismometer with the contact device comprises a base, a rectifier core and a contact device; such VSP well seismometer is characterized in that a, the base is composed of an upper connector, a middle connector and a lower connector. The upper connector is connected with the lower connector via the middle connector. The perforated electric cable hole and the tracheal orifice are arranged on the upper connector and the lower connector of each base. The upper connector is provided with the rectifier core, while the cylinder is available in the lower connector; b, the rectifier core and the contact device are arranged in the same base. Three rectifier cores are available in each upper connector and achieve the orthogonal mounting inside the base. The multi-drop three-component geophone series are constituted by the base with the three-component geophones; c, the contact device consists of a bearing rod, a connecting lever and a cylinder. One end of the bearing rod is connected with the lower connector and the tail end thereof is arranged with the support plate. The middle part of the bearing rod is connected via the connecting lever so as to be positioned on the piston rod extension inside the base.

Description

Little VSP well seismometer of band pushing device

Technical field: a kind of little VSP well seismometer with pushing device, be used for oil seismic exploration, shallow-layer geology description of locality such as ore deposit geology and construction work, belong to a kind of manufacturing technology field that little VSP well logging receives the special-purpose detector arrangement in down-hole of multi-component seismic ripple that is used for.

Background technology: at present, little VSP well logging general borehole seismic ripple collecting device, be the single-point three-component seismometer, its backup mode generally adopts air bag or electromagnetism, single-point three-component seismometer borehole seismic ripple collecting device, mainly be made up of matrix, three-component seismometer, pushing device, signal-transmitting cable and joint etc., three-component seismometer and pushing device are fixed on the cover matrix; During construction, earlier this collecting device is put into tens meters construction well, by the job design requirement, arrive the degree of depth of appointment at matrix after, start pushing device, push matrix to the borehole wall and be close on the borehole wall, at this moment, start instrument and excite in ground, the three-component seismometer that is fixed on the matrix converts the seismic event that receives to electric signal, passes back to receive instrument and be recorded in through transmission cable to receive on the instrument, finish the collection of a point after, discharge pushing device, matrix is promoted or drop to another degree of depth, descend the collection of a bit, until the seismic data acquisition work of finishing full well, the shortcoming of this class single-point borehole seismic ripple collecting device is: owing to be single-point acquiring, the carrying out that needs a point of a point after finishing a point and gathering, promotes once again, be installed in three-component seismometer on the matrix and pushing device by the position of resetting of a point of a point, so its operating efficiency is low; Because the down-hole borehole wall, and the flatness of each degree of depth and flexibility all be inequality, therefore adopts the backup effect of air bag or electromagnetism also just different, therefore must cause the consistance of the seismic data that receives relatively poor, simultaneously, constantly shift one's position and also can bring higher construction cost.

Summary of the invention: the present invention is in order to overcome the deficiency that the little vsp well logging of existing single-point borehole seismic ripple collecting device exists in construction, employing in a bite well, be provided with the multiple spot three-component seismometer method, design a kind of little VSP well seismometer that once excites the band pushing device of finishing of can be in a bite well installing simultaneously.

The present invention includes matrix, multiple spot three-component seismometer and telescoping ram, technical scheme is:

1, three-component seismometer and telescoping ram are arranged in the same matrix, in the last connector of matrix the wave detector core are set, a cylinder is set in the following connector; Telescoping ram comprises pole, connecting rod and cylinder, and an end of pole is connected on the following connector of matrix, and the tail end of pole is provided with to support and pulls, and the middle part of pole is connected the piston tail rod that is arranged on matrix inside by connecting rod;

2, three wave detector cores are set in the connector on each matrix, form three-component seismometer, three wave detector core orthogonal thereto installations in matrix;

3, eight matrixes that are provided with three-component seismometer are connected a string on, make little vsp well logging borehole seismic ripple collector form multiple spot three-component seismometer string, according to well depth, the quantity of the three-component seismometer string that is linked together by matrix also can be greater than eight;

4, matrix is provided with the cable aperture and the tracheal orifice of perforation;

During use, three-component seismometer is passed cable aperture by cable connect into multiple spot three-component seismometer string, one end of cable is connected on the reception instrument on ground, the other end connects the three-component seismometer string, connect air pump and the cylinder that is arranged in the matrix by tracheae again, be connected into a string the three-component seismometer polyphone and RIH by wirerope after connecting, start inflating pump high pressure gas is delivered to each cylinder that is arranged in the matrix by the tracheae line, piston moves upward under the promotion of gas, connecting rod promotes pole and outwards relies on the borehole wall, when the support that is arranged on the pole tail end is pulled when being supported on the borehole wall, its reaction thrust is just with matrix being pushed against on the borehole wall tightly, excite the explosive on ground then, produce focus, after under the focus arrival point, the three-component seismometer serial connection that the seismic event that returns is just tightly leaned against on the borehole wall is received, and by cable transmission to receiving in the instrument, so just finished once and excited, then, stop the work of inflating pump, the cylinder in the matrix does not have the support of high pressure gas, under the effect of spring, piston is just return original position, and in drivening rod and the pole withdrawal matrix, so that the recovery of three-component seismometer string.

The invention has the beneficial effects as follows: backup and three-component seismometer are arranged in the matrix, adopt cylinder interlock backup mode, guaranteed the coupling of wave detector, improve the authenticity of seismic data acquisition at the down-hole and the borehole wall; Be serially connected in a plurality of matrixes that are provided with three-component seismometer a string, formed the three-component seismometer of multiple spot, can once finish little vsp well logging borehole seismic ripple collection of a bite well, reach the purpose that improves little vsp well logging operating efficiency, owing to be the artificial string that connects, so, in the time of needs, also can singlely use, and realized that construction finishes the automatic recovery of back sway brace, the whole backup system employs of the present invention the mechanical linkages principle, have simple in structure, easy to operate, backup position characteristic of accurate.

Description of drawings

Fig. 1 is the organigram in longitudinal profile of the present invention,

Fig. 2 is a front of the present invention broken section structural representation.

Embodiment: the present invention includes matrix, multiple spot three-component seismometer and telescoping ram, technical scheme is: three-component seismometer and telescoping ram are arranged in the same matrix, matrix is divided into connector 1, middle connector 7 and following connector 11, in last connector 1, be provided with the mounting hole 3 of laying the wave detector core, for the wave detector core that does not make vertical setting falls down, be provided with wave detector lid 4 in the vertical bottom of the mounting hole of wave detector core, a cylinder is set in the following connector 11, and the last connector 1 of matrix is connected by middle connector 7 with following connector 11; Telescoping ram comprises pole 14, connecting rod 5 and cylinder 10, in cylinder 10, be provided with piston 9, the tail end of piston 9 passes cylinder head 16 by piston rod and is connected with connecting rod 5, the two ends of connecting rod 5 are connected piston rod and pole 14 by pin 6 respectively with 15, one end of pole 14 is connected by supporting pin 18 on the following connector 11 of matrix, and the tail end of pole is provided with to support and pulls; Three wave detector cores are set in the connector 1 on each matrix, form three-component seismometer, three wave detector core orthogonal thereto installations in matrix; With eight matrixes that are provided with three-component seismometer be connected a string on, make little vsp well logging borehole seismic ripple collector form multiple spot three-component seismometer string, according to well depth, the quantity of the three-component seismometer string that is linked together by matrix also can be greater than eight; The both sides of connector 1 and following connector 11 are provided with cable aperture 19 and the tracheal orifice 22 that upper and lower connector connects on matrix, cable aperture 19 communicates with three wave detector core mounting holes 11 of setting in the last connector 1, and tracheal orifice 22 leads to descend valve 24 and the injecting hole 17 that is arranged on down cylinder 10 bottoms in the connector 11 to communicate respectively by the last valve 23 that is arranged on down on the connector 11; During use, three wave detector cores are fixed in three wave detector core mounting holes 3, three wave detector cores on matrix in the connector 1 orthogonal thereto installation can guarantee the isolation of signal on three components; Transmission cable one end of 60 cores is welded on the connection instrument plug, and the other end passes cable aperture 19 and is connected with three wave detector cores respectively, and is fixed on by pressing

plate

20 and 21 in the last connector 1 and following connector 11 of matrix; The transmission cable that passes cable aperture 19 continues to be connected with wave detector core on the next stage matrix by the spacing of design, up to the 8th grade; One end of high pressure gas pipeline connects on the inflating pump, the other end passes on the last valve 23 that tracheal orifice 22 leads to the following connector 11 that is connected first order matrix, then by valve 24 under the tracheae line warp, and the last valve that passes the following connector on tracheal orifice and the second level matrix on the matrix of the second level is connected, and so the one-level one-level is up to the 8th grade; Being connected to by the load-bearing wirerope between each grade matrix on the connecting hole 12 at matrix two ends, eight matrixes are linked together, form little vsp well logging detector string; In order to increase of the friction of wave detector matrix at the down-hole and the borehole wall, prevent that the wave detector matrix from sliding on the borehole wall, connector 1 and telescoping ram all are carved with

tooth

2 and 13 above supporting and pulling on each matrix; Compress in order to connect tracheae, following valve 24 is provided with connector pressure cap 25, prevents gas leakage.

When construction is used, the single matrix that installs three-component seismometer is passed cable connecting hole 12 by cable connect a plurality of single matrixes that installed three-component seismometer, form multiple spot three-component seismometer string, one end of cable is connected on the reception instrument on ground, the other end connects the three-component seismometer string of down-hole, pass tracheal orifice 22 by tracheae again and connect the cylinder 10 that is arranged in the lower substrate 11 and the tracheal orifice of next stage, after connecting, cable a plurality of matrixes are connected a string go up and with the string RIH by wirerope, after arriving the position of setting, starting inflating pump delivers to high pressure gas in each cylinder that is arranged in the matrix by the tracheae line, piston 9 in the cylinder moves upward under the effect of high pressure gas, connecting rod 5 is pushed pole 14 to the borehole wall, when the support that is arranged on pole 14 tail ends is pulled when being supported on the borehole wall, its reaction thrust is just with matrix being pushed against on the borehole wall tightly, excite the explosive on ground then, produce focus, after under the focus arrival point, the three-component seismometer serial connection that the seismic event that returns is just tightly leaned against on the borehole wall is received, and by cable transmission to receiving in the instrument, so just finished once and excited, then, stop the work of inflating pump, cylinder in the matrix does not have the support of high pressure gas, under the effect of spring 8, piston 9 is just return original position, and in drivening rod 5 and the pole 14 withdrawal matrixes, so that the recovery of three-component seismometer string.

Claims

1, a kind of little VSP well seismometer with pushing device comprises matrix, wave detector core and telescoping ram, it is characterized in that:

A, described matrix are made of last connector, middle connector and following connector, last connector is connected by middle connector with following connector, connector and following connector are provided with the cable aperture and the tracheal orifice of perforation on each matrix, in the last connector of matrix the wave detector core is set, in the following connector cylinder is set;

B, described wave detector core and telescoping ram are arranged in the same matrix, three wave detector cores are set in the connector on each, three wave detector core orthogonal thereto installations in matrix, multiple spot three-component seismometer string is connected and composed by the matrix that is provided with three-component seismometer;

C, described telescoping ram comprise pole, connecting rod and cylinder, and an end of pole is connected on the following connector of matrix, and the tail end of pole is provided with to support and pulls, and the middle part of pole is connected the piston tail rod that is arranged on matrix inside by connecting rod.

2, little VSP well seismometer of band pushing device according to claim 1 is characterized in that: connector and telescoping ram are carved with tooth above supporting and pulling on described matrix; Following valve is provided with the connector pressure cap.