CN203201515U - Underground fishing tool - Google Patents
Underground fishing tool Download PDFInfo
- Publication number
- CN203201515U CN203201515U CN 201320212507 CN201320212507U CN203201515U CN 203201515 U CN203201515 U CN 203201515U CN 201320212507 CN201320212507 CN 201320212507 CN 201320212507 U CN201320212507 U CN 201320212507U CN 203201515 U CN203201515 U CN 203201515U
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- pressure
- bearing cylinder
- circuit
- fishing tool
- measurement
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- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an underground fishing tool comprising a circuit pressure-bearing cylinder, an annular slurry converter arranged in the circuit pressure-bearing cylinder, and a lower joint connected with the circuit pressure-bearing cylinder through a connecting element. A slurry pressure measuring sensor used for sensing the pressure of slurry is arranged in the circuit pressure-bearing cylinder. A measuring control circuit is arranged in the circuit pressure-bearing cylinder in a sealed mode. A drill stress measuring sensor used for measuring the stress borne by a drill is arranged between the circuit pressure-bearing cylinder and the lower joint. The outer wall of the lower joint is provided with a conductivity measuring electrode system used for measuring the conductivity around the underground fishing tool. Water holes used for slurry flowing are formed in the middle of the circuit pressure-bearing cylinder, the middle of the connecting element and the middle of the lower joint. Due to measurement of resistivity changes around the fishing tool, pressure change situations of the slurry in a water hole of the drill and pull force or pressure changes of the lower portion of the fishing tool, whether fishing is successful or not can be accurately confirmed, and the fishing successful rate is improved.
Description
Technical field
The utility model relates to petroleum exploration field, particularly relates to a kind of underground fishing tool.
Background technology
In oil exploration and development fields, because the formation condition of some well is complicated, can cause pit shaft in poor shape.In when construction well logging, logger and/or logging cable may be met card even the well that falls, and cause engineering accident and heavy losses, especially with the instrument of the radioactive source well that falls, can cause serious accident.Therefore, in case similar accident occurs, just must fall well cable and/or instrument are salvaged out.
The method of salvaging at present instrument/cable is more, and such as slip-type, telescopic etc., but existing method can not know accurately whether fishing tool arrives top of fish, whether instrument enters fishing socket.Especially when logging cable falls well, present tool and method can't judge substantially whether fishing tool arrives cable and fall that well location is put and whether salvage cable, and can only rule of thumb make repeated attempts.The salvaging time is long, success rate is low, even can cause secondary injury to being salvaged instrument.
The utility model content
The technical problem that the purpose of this utility model will solve provides a kind of accurate positioning, underground fishing tool that fishing success ratio is high.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of underground fishing tool, its underpart connects fishing socket or cable salvage lance, and top connects hanger and drilling tool successively.This underground fishing tool comprises: circuit pressure-bearing cylinder, the mud annular space converter that is installed in circuit pressure-bearing cylinder inside and the lower contact of being connected a connection piece and being connected with circuit pressure-bearing cylinder are provided with the mud pressure measuring transducer of perception mud pressure and are sealed and installed with circuit of measurement and control in described circuit pressure-bearing cylinder; The drilling tool of measuring the stressed size of drilling tool is installed between described circuit pressure-bearing cylinder and lower contact is subjected to force measuring sensors, when this fishing tool under tension or pressure, this sensor can produce corresponding strain signal and send measuring circuit back to, and measured and record; The conductivity measurement electrode system of measuring this underground fishing tool electrical conductivity on every side is installed at described lower contact outer wall, forms the hydrophthalmia for the mud circulation at described circuit pressure-bearing cylinder, connector and lower contact middle part.
Described circuit of measurement and control comprises pressure-bearing support, circuit of measurement and control plate and supplying cell group, described pressure-bearing support middle part form slurry channel and and circuit pressure-bearing cylinder inwall between form sealing cabin, described circuit of measurement and control plate and supplying cell group are arranged in the described sealing cabin.
The two ends of described pressure-bearing support are respectively by forming sealing between sealing ring and the circuit pressure-bearing cylinder inwall.
Described mud pressure measuring transducer is installed on the pressure-bearing support, and its test lead is communicated with hydrophthalmia, is used for measuring the mud pressure in the hydrophthalmia.
Described conductivity measurement electrode system is comprised of a plurality of current electrodes, measurement electrode and loop electrode, be provided with a sealing-plug between described connector and lower contact, described current electrode, measurement electrode and loop electrode are connected high voltage bearing insulated conductor and are connected with described circuit of measurement and control through sealing-plug.
Described lower contact is the standard rig joint, as required stube cable fishing spear or instrument fishing socket.
The beneficial effects of the utility model are: judge around the fishing tool by measuring fishing tool electrical conductivity on every side whether logging cable is arranged, well location is put thereby definite cable falls; Judge by measuring the drilling tool water hole mud pressure variations whether instrument enters fishing socket; Judge whether to arrive the instrument top or instrument or cable are lived in no salvaging by the tension variations of measuring the fishing tool bottom.By the measurement to above-mentioned 3 parameters, " visual " salvaging be can realize, thereby salvaging accuracy rate and success rate improved, reduce the engineering safety accident, reduced economic loss.
Description of drawings
Fig. 1 is the cross-sectional view of underground fishing tool of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing concrete structure of the present utility model is elaborated.
During use, this underground fishing tool bottom connects fishing socket or cable salvage lance, and top connects hanger and drilling tool successively.Its concrete structure comprises as shown in Figure 1: circuit pressure-bearing cylinder 1, the mud annular space converter 2 that is installed in circuit pressure-bearing cylinder 1 inside and the lower contact 12 of being connected a connection piece and being connected with circuit pressure-bearing cylinder 1.In circuit pressure-bearing cylinder 1, be provided with the mud pressure measuring transducer 8 of perception mud pressure and be sealed and installed with circuit of measurement and control.The drilling tool of measuring the stressed size of drilling tool is installed between circuit pressure-bearing cylinder 1 and lower contact 12 is subjected to force measuring sensors 9, when this fishing tool under tension or pressure, this sensor can produce corresponding strain signal and send measuring circuit back to, and measured and record.The conductivity measurement electrode system 13 of measuring this underground fishing tool electrical conductivity on every side is installed at lower contact 12 outer walls, forms the hydrophthalmia 14 for the mud circulation at circuit pressure-bearing cylinder 1, connector and lower contact 12 middle parts.
Circuit of measurement and control comprises: press support 3, circuit of measurement and control plate 5 and supplying cell group 6.Pressure-bearing support 3 middle parts form slurry channel and and circuit pressure-bearing cylinder 1 inwall between form sealing cabin, circuit of measurement and control plate 5 and supplying cell group 6 are arranged in the described sealing cabin.The two ends of pressure-bearing support 3 respectively by sealing ring 4,10 with circuit pressure-bearing cylinder 1 inwall between form to seal.
Mud pressure measuring transducer 8 is installed on the pressure-bearing support 3, and its test lead is communicated with hydrophthalmia 14, is used for measuring the mud pressure in the hydrophthalmia 14.On the support of installation mud pressure measuring transducer 8 sealing ring 7 is housed, forms gas-tight silo in the support, the circuit of protection mud pressure measuring transducer 8.
Conductivity measurement electrode system 13 is comprised of a plurality of current electrodes, measurement electrode and loop electrode, be provided with a sealing-plug 11 between described connector and lower contact 12, the current electrode of conductivity measurement electrode system 13, measurement electrode and loop electrode are connected high voltage bearing insulated conductor and are connected with described circuit of measurement and control through sealing-plug 11.
The course of work and the principle of this fishing tool are as follows:
When carrying out fishing, this fishing tool bottom need to connect the instrumentations such as fishing socket or cable salvage lance, and its top is connected with scalable connecting short section, mud-pulse controller, mud pulse generator in being installed in special-purpose hanger by annular space converter 2.Hanger top connects drilling tool, by drilling tool this fishing tool and instrument fishing socket or cable salvage lance is transferred in the pit shaft.
After arriving predetermined well depth position below the fishing tool, drilling tool is slowly transferred on beginning circulating mud limit, limit.Behind the beginning circulating mud, this fishing tool begins to measure electrical conductivity, hydrophthalmia mud pressure and drilling tool around the drilling tool electrode system three parameters of power that are squeezed.One group of data of every measurement, communication bus by instrument is transferred to the mud-pulse controller, and by the data format of mud-pulse controller according to prior layout, the control mud pulse generator produces mud-pulse, after ground receives mud wave, realize that by ground instrument decoding and data show.The ground handling personnel can judge according to these data whether fishing tool arrives instrument or cable position.
When arriving instrument and touching instrument or during cable, because fishing tool can be squeezed, the extruding force of its measurement can increase; After instrument enters fishing socket, because hydrophthalmia is plugged a part, so the hydrophthalmia mud pressure during circulating mud can increase; When around the electrode apparatus cable being arranged, the electrical conductivity of measurement can obviously raise.
After salvaging upper instrument or cable, when carrying drilling tool, if instrument or cable do not have unfreezing, the tensile force that drilling tool is subject to can obviously increase.After unfreezing, fishing tool is not subjected to the stretching of instrument gravity, and the pulling force that fishing tool is measured can obviously reduce.
That is to say, by measuring the pressure that is subject to when drilling tool is transferred, can judge whether fishing tool arrives top of fish; The pulling force that is subject to when carrying on the drilling tool by measuring can judge whether the fishing tool bottom has instrument or cable; By measuring hydrophthalmia mud pressure variations in the drilling tool, can judge whether the instrument of salvaging enters in the fishing socket; Change by measuring drilling tool external resistance rate, can judge whether the fishing tool outside exists logging cable.
After ground demonstrates above data variation, by the Comprehensive Comparison to these three parameters, refloating operation teacher can accurately determine whether successfully to salvage instrument or cable, has solved the problem that originally can only lean on micro-judgment, reaches the purpose of " visual " fishing.
Claims (5)
1. underground fishing tool, its underpart connects fishing socket or cable salvage lance, top connects hanger and drilling tool successively, it is characterized in that: this underground fishing tool comprises circuit pressure-bearing cylinder (1), be installed in the inner mud annular space converter (2) of circuit pressure-bearing cylinder (1) and the lower contact (12) of being connected a connection piece and being connected with circuit pressure-bearing cylinder (1), is provided with the mud pressure measuring transducer (8) of perception mud pressure and is sealed and installed with circuit of measurement and control in described circuit pressure-bearing cylinder (1); The drilling tool of measuring the stressed size of drilling tool is installed between described circuit pressure-bearing cylinder (1) and lower contact (12) is subjected to force measuring sensors (9); The conductivity measurement electrode system (13) of measuring this underground fishing tool electrical conductivity on every side is installed at described lower contact (12) outer wall, forms the hydrophthalmia (14) for the mud circulation at described circuit pressure-bearing cylinder (1), connector and lower contact (12) middle part.
2. underground fishing tool according to claim 1, it is characterized in that: described circuit of measurement and control comprises pressure-bearing support (3), circuit of measurement and control plate (5) and supplying cell group (6), described pressure-bearing support (3) middle part form slurry channel and and circuit pressure-bearing cylinder (1) inwall between form sealing cabin, described circuit of measurement and control plate (5) and supplying cell group (6) are arranged in the described sealing cabin.
3. underground fishing tool according to claim 2 is characterized in that: the two ends of described pressure-bearing support (3) seal by forming between sealing ring (4,10) and circuit pressure-bearing cylinder (1) inwall respectively.
4. underground fishing tool according to claim 1, it is characterized in that: described mud pressure measuring transducer (8) is installed on the pressure-bearing support (3), and its test lead is communicated with hydrophthalmia (14).
5. underground fishing tool according to claim 1, it is characterized in that: described conductivity measurement electrode system (13) is comprised of a plurality of current electrodes, measurement electrode and loop electrode, be provided with a sealing-plug (11) between described connector and lower contact (12), described current electrode, measurement electrode and loop electrode are connected high voltage bearing insulated conductor and are connected with described circuit of measurement and control through sealing-plug (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212507 CN203201515U (en) | 2013-04-24 | 2013-04-24 | Underground fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212507 CN203201515U (en) | 2013-04-24 | 2013-04-24 | Underground fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201515U true CN203201515U (en) | 2013-09-18 |
Family
ID=49145630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320212507 Expired - Fee Related CN203201515U (en) | 2013-04-24 | 2013-04-24 | Underground fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201515U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678700A (en) * | 2018-08-02 | 2018-10-19 | 吉艾（天津）石油工程有限公司 | Fishing device |
| CN110805431A (en) * | 2019-11-15 | 2020-02-18 | 中国石油集团测井有限公司华北分公司 | Fish top position measuring method |
| CN111810073A (en) * | 2020-07-13 | 2020-10-23 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
| CN112145161A (en) * | 2020-08-21 | 2020-12-29 | 中石化石油工程技术服务有限公司 | Source top-mounted neutron instrument capable of being salvaged |
| CN114776245A (en) * | 2022-05-16 | 2022-07-22 | 大庆长垣能源科技有限公司 | Drilling plug-free salvageable well completion process |
-
2013
- 2013-04-24 CN CN 201320212507 patent/CN203201515U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678700A (en) * | 2018-08-02 | 2018-10-19 | 吉艾（天津）石油工程有限公司 | Fishing device |
| CN108678700B (en) * | 2018-08-02 | 2024-04-30 | 吉辰智能设备集团有限公司 | Fishing device |
| CN110805431A (en) * | 2019-11-15 | 2020-02-18 | 中国石油集团测井有限公司华北分公司 | Fish top position measuring method |
| CN111810073A (en) * | 2020-07-13 | 2020-10-23 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
| CN111810073B (en) * | 2020-07-13 | 2022-07-08 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
| CN112145161A (en) * | 2020-08-21 | 2020-12-29 | 中石化石油工程技术服务有限公司 | Source top-mounted neutron instrument capable of being salvaged |
| CN112145161B (en) * | 2020-08-21 | 2022-05-17 | 中石化石油工程技术服务有限公司 | Source top-mounted neutron instrument capable of being salvaged |
| CN114776245A (en) * | 2022-05-16 | 2022-07-22 | 大庆长垣能源科技有限公司 | Drilling plug-free salvageable well completion process |
| CN114776245B (en) * | 2022-05-16 | 2023-03-24 | 大庆长垣能源科技有限公司 | Drilling plug-free salvageable well completion process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180622 Address after: 710077 No. 85 zhang85 Road, Jinye two road, Xi'an high and new technology development zone, Shaanxi Patentee after: CHINA PETROLEUM LOGGING Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 |