CN201176872Y

CN201176872Y - Down-hole parameter detector

Info

Publication number: CN201176872Y
Application number: CNU2008201073334U
Authority: CN
Inventors: 任文浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-09
Filing date: 2008-04-09
Publication date: 2009-01-07
Anticipated expiration: 2018-04-09

Abstract

The utility model discloses a parameter detector which has a simple structure and low cost, is easy to manufacture, and is suitable to be used in underground high-temperature environment. The parameter detector comprises a measuring section which is provided with a circuit required for measurement and a shell, wherein one end of the measuring section is provided with a sealer, and the other end of the measuring section is provided with a measuring probe; and a refrigerant ring which is prepared by semiconductor materials is arranged inside the shell. The parameter detector has good sealing means, good heat conduction or dissipation means in the shell, quick measurement, high precision and low cost due to use of common electronic parts and components, can be used in multipoints and in large range, increases monitoring of underground parameters, can find out possible abnormalities underground in time, and then avoids generation of accidents and improves the production efficiency of an oil well.

Description

The downhole parameters detector

Technical field:

The utility model relates to a kind of instrumentation that use the down-hole, oil field that is used for, and specifically is meant a kind of downhole parameters detector that can be used for using under the hot environment.

Background technology:

It is dark that the probing at present external oil field or the oil recovery degree of depth have reached thousands of rice, increase along with the degree of depth, down-hole ambient temperature improves thereupon and can reach about 100 ℃～150 ℃, the components and parts of general instrumentation commonly used can use under normal temperature environment, but often certainty of measurement declines to a great extent under hot environment, even can't use, its reason is electronic devices and components characteristic electron changes at high temperature, therefore the components and parts that present downhole parameters detector both domestic and external uses must be selected high temperature resistant element or special the making, cause components and parts to cost an arm and a leg, limited the application of common data acquisition, and then influenced field produces, the hidden danger that causes the accident can not in time be found.

Summary of the invention:

Goal of the invention of the present utility model is to disclose the parameter detecting instrument that a kind of suitable down-hole hot environment simple in structure, easy to manufacture, with low cost is used.

Realize that technical solution of the present utility model is as follows: comprise being provided with the measuring section of measuring required circuit and housing 1, key is that an end of measuring section is provided with sealer 2, the measuring section other end is provided with measuring probe 3, is provided with the refrigerating ring 4 of semi-conducting material preparation in housing 1.

Described measuring probe 3 is an end cap 5, and end cap 5 can be connected with housing 1, and the wall of end cap 5 has and the extraneous through hole 6 that communicates, and is provided with measuring cell 7 in the through hole 6.

The through hole 6 of the wall of described end cap 5 is located at the front end face of end cap 5, or is located at the side wall surface of end cap 5.

The front end side wall of described end cap 5 has connecting portion 8, and end cap 5 is provided with lead attachment plug 13, and end cap 5 front ends can connect a measuring section and corresponding measuring probe 3 again.

The through hole 6 that the wall of described end cap 5 is provided with is at least one.

Described sealer 2 is a joint ring 9 that is connected with housing 1, and the single-core cable 10 that transmits the measuring circuit output signal is passed at joint ring 9 centers, compresses sealing by O-ring seal 11 through sealing nut 12.

There is internal thread the outer end of the joint ring 9 of described sealer 2, can be threaded with the front end of the joint ring 9 of another sealer 2.

The support that the good heat conducting material making that is connected with the contact of refrigerating ring 4 inwalls is arranged in the described refrigerating ring 4.

The utility model is provided with refrigerating ring in the housing of the specific measuring section of detector, energising earlier makes the refrigerating ring refrigeration before measuring, and makes in the housing temperature drop to normal level or far below subsurface environment high temperature, but then makes ordinary electronic components and parts operate as normal.Because the detection of subsurface environment parameter only needs to be undertaken by the timing requirement, it can be undertaken or set and carry out automatically by preset program fully by the terrestrial operation personnel, and the utlity model has good conduction of heat or diffusion means in good seal means and the housing, make that measurement of the present utility model is quick, precision is high, and it is with low cost owing to the ordinary electronic components and parts are made, but multiple spot and use on a large scale, increased monitoring to downhole parameters, can in time find the abnormal conditions that the down-hole may occur, and then avoid accident to take place, improve the production efficiency of oil well.

Description of drawings:

Fig. 1 is the structural representation of an embodiment of the present utility model.

Fig. 2 is the structural representation of second embodiment of the present utility model.

Fig. 3 is the structural representation of the 3rd embodiment of the present utility model.

Fig. 4 is the schematic diagram of ground power supply communications adapter of the present utility model.

Fig. 5 is the section structure schematic diagram of single-core cable of the present utility model.

The specific embodiment:

See also Fig. 1～Fig. 5, specific embodiment of the utility model is as follows: comprise being provided with and measure required circuit and housing 1, described circuit is a prior art, be signal processing circuit such as the measurement temperature used always or pressure or flow and interlock circuit that the signal that obtains is transferred out, foregoing circuit places in the housing 1, key is that an end of measuring section is provided with sealer 2, in housing 1, be provided with the refrigerating ring 4 of semi-conducting material preparation, above-mentioned refrigerating ring 4 freezes under the direct current effect that circuit provides, can make temperature in the housing 1 reach normal temperature rapidly and components and parts in the circuit can normally be measured with signal transmit, sealer 2 can make housing 1 guarantee that at first low temperature is difficult for conduction, and the stable holding of the single-core cable 10 of signal is transmitted in assurance simultaneously earthward; Described measuring probe 3 is an end cap 5, end cap 5 can be connected with housing 1, for example be threaded or caulking groove connects or clamping all can, the wall of end cap 5 has and the extraneous through hole 6 that communicates, be provided with measuring cell 7 in the through hole 6, described measuring cell 7 can be temperature pick up or pressure sensor or flow transmitter etc., above-mentioned sensor is the product of prior art, sensor can carry out suitable encapsulation, help the collection of data on the one hand, on the one hand can be with local or all shutoff of through hole 6, be beneficial to keep the low-temperature condition in the housing 1; The through hole 6 of the wall of described end cap 5 is located at the leading section of end cap 5 or is located at the side wall surface of end cap 5, and visual concrete measurement requirement is provided with suitable measuring cell 7 during actual the use in through hole 6; The front end side wall of described end cap 5 has connecting portion 8, and end cap 5 is provided with lead attachment plug 13, end cap 5 front ends can connect a measuring section and corresponding measuring probe 3 again, the above-mentioned essence that is provided with is the measuring section and the corresponding measuring probe 3 that can be provided with more than two or two, reaching the parameter of measuring multi-parameter more or a certain measured zone understanding the more detailed state in down-hole, the circuit of the circuit between two measuring sections connects only to need to peg graft by default attachment plug 13 just can; As shown in Figure 2, the through hole 6 that the wall of described end cap 5 is provided with is at least one, so that just can the multiclass parameter be measured at a measuring probe 3, can simultaneously downhole temperature and pressure be measured; The sealer 2 of described measuring section one end is a joint ring 9 that is connected with housing 1, and the single-core cable 10 that transmits the measuring circuit output signal is passed at joint ring 9 centers, compresses sealing by O-ring seal 11 through sealing nut 12; There is internal thread the outer end of the joint ring 9 of sealer 2, can be threaded with the front end of the joint ring 9 of another sealer 2, with further increase sealing effectiveness, and has goodish bonding strength; The support (not shown) that the good heat conducting material making that is connected with the contact of refrigerating ring 4 inwalls is arranged in the described refrigerating ring 4, this support can be delivered to the low temperature that refrigerating ring 4 produces rapidly the inside of housing 1 on the one hand, play the effect of radiator or sheet, also can be used as the system supporting member of circuit board simultaneously, described refrigerating ring 4 can be integrally formed ring-type or cylindrical tube, also the arc more than two and be spliced into cylindrical tube; When the utility model uses, by ground power supply communications adapter 14 start detection, at first be that the alternating current that inlet wire 15 will be come in becomes high voltage direct current through power module 16, the circuit that reaches measuring section through single-core cable 10 is restarted 4 work of semiconductor refrigerating ring, make the measuring section internal temperature drop to the temperature that to work, circuit working then, measuring probe 3 is transferred to circuit with the signal of measuring, and the transmission unit 17 that in single-core cable 10 passes to ground power supply communications adapter 14, is provided with, transmission unit 17 can use wired or wireless mode to be transferred to Surveillance center, also can show on the display unit 18 of adapter 14; Described single-core cable 10 is made up of outer steel armour 19, overcoat 20, screen layer 21, insulating layer 22 and single core conductor 23, and single core conductor 23 connects dc power anode, and screen layer 21 connects dc power cathode.

Claims

1. downhole parameters detector, comprise and be provided with the measuring section of measuring required circuit and housing (1), an end that it is characterized in that measuring section is provided with sealer (2), and the measuring section other end is provided with measuring probe (3), is provided with the refrigerating ring (4) of semi-conducting material preparation in housing (1).

2. by the described downhole parameters detector of claim 1, it is characterized in that described measuring probe (3) is an end cap (5), end cap (5) can be connected with housing (1), and the wall of end cap (5) has and the extraneous through hole (6) that communicates, and is provided with measuring cell (7) in the through hole (6).

3. by claim 1 or 2 described downhole parameters detectors, it is characterized in that the through hole (6) of the wall of described end cap (5) is located at the front end face of end cap (5), or be located at the side wall surface of end cap (5).

4. by the described downhole parameters detector of claim 3, the front end side wall that it is characterized in that described end cap (5) has connecting portion (8), and end cap (5) is provided with lead attachment plug (13), and end cap (5) front end can connect a measuring section and corresponding measuring probe (3) again.

5. by the described downhole parameters detector of claim 4, it is characterized in that the through hole (6) that the wall of described end cap (5) is provided with is at least one.

6. by the described downhole parameters detector of claim 5, it is characterized in that described sealer (2) is a joint ring (9) that is connected with housing (1), the single-core cable (10) that transmits the measuring circuit output signal is passed at joint ring (9) center, compresses sealing by O-ring seal (11) through sealing nut (12).

7. by the described downhole parameters detector of claim 6, it is characterized in that there is internal thread the outer end of the joint ring (9) of described sealer (2), can be threaded with the front end of the joint ring (9) of another sealer (2).

8. by claim 1 or 2 or 4 or 5 or 6 or 7 described downhole parameters detectors, it is characterized in that having in the described refrigerating ring (4) support of the good heat conducting material making that is connected with the contact of refrigerating ring (4) inwall.