CN111236839A - Hydraulic sidewall contact device of cased well cable logging tractor - Google Patents
Hydraulic sidewall contact device of cased well cable logging tractor Download PDFInfo
- Publication number
- CN111236839A CN111236839A CN202010162503.4A CN202010162503A CN111236839A CN 111236839 A CN111236839 A CN 111236839A CN 202010162503 A CN202010162503 A CN 202010162503A CN 111236839 A CN111236839 A CN 111236839A
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- Prior art keywords
- pressure oil
- oil bin
- low
- pressure
- shell
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- 239000003921 oil Substances 0.000 claims abstract description 103
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 9
- 238000010008 shearing Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic pushing device of a cased well cable logging tractor, which comprises a low-pressure oil bin, a high-pressure oil bin and a bearing pin screw connected with a shell of the low-pressure oil bin and the high-pressure oil bin, wherein the bearing pin screw is positioned in a kidney-shaped groove capable of moving axially. And the output end of the plunger pump fixed on the low-pressure oil bin shell is inserted into the high-pressure oil bin. The electromagnetic valve is fixed in the high-pressure oil bin shell, and two ends of the electromagnetic valve are respectively contacted with hydraulic oil in the low-pressure oil bin and the high-pressure oil bin. One end of the push rod extends into the high-pressure oil bin, and the other end of the push rod is connected with the support rod. The stay bar is respectively connected with the two traction arms, the traction arms are connected with the gear sleeve, and the gear sleeve is fixed on the traction arms. When the traction arm needs to be opened, the electromagnetic valve is closed, the plunger pump pressurizes and inputs low-pressure oil into the high-pressure oil bin, the push rod is pushed to open the traction arm, and positive pressure is applied to the sleeve. The electromagnetic valve is conducted, the two oil bins are communicated, the oil pressure of the high-pressure oil bin is reduced, the push rod retracts, and the traction arm is retracted. The invention is a sealing device which can generate constant positive pressure, is not influenced by external environment and has stable and reliable work.
Description
Technical Field
The invention relates to a casing tractor, in particular to a hydraulic sidewall contact device of a casing well cable logging tractor.
Background
Tractor input is an important tool for horizontal well logging, wherein the pushing device of the tractor is the main component for expanding the driving arm of the tractor to contact the wall of the casing and applying positive pressure to the casing, thereby generating traction force.
The traditional retractor pushing device adopts a mechanical structure, the traction arm is opened in a mode of compressing a spring by a motor, the elasticity of the spring is reduced after the traction arm is used for a long time, the elasticity is reduced, and the positive pressure of a sleeve is changed after the traction arm is opened, so that the conveying effect of the retractor is influenced; mechanical parts of the tractor pushing device are exposed outside, impurities in a shaft are easy to block the pushing device, so that the tractor pushing device breaks down, and the logging success rate is low
Disclosure of Invention
The invention aims to provide a hydraulic pushing device of a cased hole cable logging tractor, which has a simple structure, can generate constant positive pressure, is not influenced by external environment, and is stable and reliable.
The invention aims to realize that a hydraulic sidewall contact device of a cased well cable logging tractor is provided with a low-pressure oil bin and a high-pressure oil bin, wherein a low-pressure oil bin shell and a high-pressure oil bin shell are connected into a whole by force-bearing pin screws; the bearing pin screw is positioned at the rightmost side of the kidney-shaped groove of the high-pressure oil bin shell, and the lower end of the bearing pin screw is connected with the low-pressure oil bin shell in a threaded manner; the bearing pin screw can axially move in the kidney-shaped groove; the plunger pump is fixed on the low-pressure oil bin shell by a fixing screw, the output end of the plunger pump is inserted into the high-pressure oil bin shell, and the output end of the plunger pump and the high-pressure oil bin shell are sealed by a first sealing ring; the plunger pump divides the low-pressure oil bin into two parts which are communicated by two oil passages in the plunger pump; the electromagnetic valve is fixed in the high-pressure oil bin shell through the mounting frame, and the mounting frame and the low-pressure oil bin are sealed by a second sealing ring; one end of the electromagnetic valve is contacted with hydraulic oil in the low-pressure oil bin, and the other end of the electromagnetic valve is contacted with hydraulic oil in the high-pressure oil bin; one end of the push rod extends into the high-pressure oil bin, one end of the push rod is connected with two support rods which are arranged in a Y shape, and the joint of the push rod and the high-pressure oil bin is sealed by a third sealing ring; the two support rods are respectively connected with two traction arms, and traction wheels are arranged on the traction arms; the draft arm passes through fixing nut and is connected with the gear external member, and the gear external member passes through the set screw to be fixed on high-pressure oil storehouse casing.
When the invention is used for opening the traction arm, the electromagnetic valve is controlled to be in a closed state, the plunger pump pressurizes and inputs hydraulic oil in the low-pressure oil bin into the high-pressure oil bin, the push rod is pushed, the push rod opens the traction arm, the traction arm is in contact with the sleeve, and a certain positive pressure is applied to the sleeve. When the traction arm needs to be retracted, the electromagnetic valve is controlled to be in a conducting state, the high-pressure oil bin is communicated with the low-pressure oil bin, the oil pressure in the high-pressure oil bin is reduced, the push rod retracts, and the traction arm is retracted.
The invention has simple structure, is a closed device, can generate constant positive pressure, is not influenced by external environment, and has stable and reliable work.
Drawings
FIG. 1 is a schematic structural view of the present invention,
fig. 2 is a force bearing pin screw position diagram.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the invention is provided with a low pressure oil bin 1 and a high pressure oil bin 7, wherein a low pressure oil bin shell 10 and a high pressure oil bin shell 11 are connected into a whole by a force bearing pin screw 2, the force bearing pin screw is positioned at the rightmost side of a kidney-shaped groove of the high pressure oil bin shell, and the lower end of the force bearing pin screw is connected with the low pressure oil bin shell in a threaded manner. The bearing pin screw can axially move in the kidney-shaped groove, and when the bearing pin screw moves to the left side of the kidney-shaped groove, the hydraulic pump can be completely separated from the high-pressure oil bin body.
The plunger pump 4 is fixed on the low-pressure oil bin shell through the fixing screw 5, the output end of the plunger pump is inserted into the high-pressure oil bin shell, and the output end of the plunger pump and the high-pressure oil bin shell are sealed through the first sealing ring 12. The plunger pump divides the low-pressure oil bin into two parts which are communicated by two oil passages in the plunger pump.
The electromagnetic valve 6 is fixed in the high-pressure oil bin shell through a mounting frame, and the mounting frame and the low-pressure oil bin are sealed through a sealing ring II 13. One end of the electromagnetic valve is in contact with the hydraulic oil in the low-pressure oil bin, and the other end of the electromagnetic valve is in contact with the hydraulic oil in the high-pressure oil bin. One end of the push rod 8 extends into the high-pressure oil bin 7, one end of the push rod is connected with two support rods 15 which are arranged in a Y shape, and the joint of the push rod 8 and the high-pressure oil bin 7 is sealed by a third sealing ring 17. The two support rods are respectively connected with two traction arms 9, and traction wheels 19 are arranged on the traction arms; the trailing arm is connected to a gear assembly 16 by a fixing nut 18, which is fixed to the high-pressure oil sump housing 11 by a fixing screw 14.
When the invention is needed to open the traction arm 9, the electromagnetic valve 6 is controlled to be in a closed state, the plunger pump 4 pressurizes and inputs hydraulic oil in the low-pressure oil bin 1 into the high-pressure oil bin 7, the push rod 8 is pushed, the traction arm 9 is opened by the push rod, the traction arm is in contact with the sleeve, and a certain positive pressure is applied to the sleeve. When the traction arm needs to be retracted, the solenoid valve is controlled to be in a conducting state, the high-pressure oil bin is communicated with the low-pressure oil bin, oil in the high-pressure oil bin flows to the low-pressure oil bin, the oil pressure in the high-pressure oil bin is reduced, the push rod retracts, and the traction arm is retracted.
The invention designs a set of safety system, namely a shear pin 3 is arranged at the joint of a low-pressure oil bin shell and a high-pressure oil bin shell. When the electromagnetic valve has problems, the oil in the high-pressure oil bin can not return to the low-pressure oil bin, the traction arm can not be retracted, and the tractor can be stuck underground. At the moment, if the instrument is forcibly pulled upwards, a relative acting force can be generated between the low-pressure oil bin shell and the high-pressure oil bin shell, the acting force can be completely applied to the shearing pin, when the acting force is greater than the shearing pressure of the shearing pin, the shearing pin is broken, the low-pressure oil bin shell is relatively separated from the high-pressure oil bin shell, the low-pressure oil bin shell moves leftwards, the force bearing pin screw 2 moves to the leftmost side of the kidney-shaped groove and simultaneously drives the plunger pump to move leftwards, the plunger pump is completely separated from the high-pressure oil bin shell, the low-pressure oil bin is communicated with the high-pressure oil bin, oil in the high-pressure oil bin flows to the low-pressure oil bin, the oil pressure in the high-pressure oil bin is reduced, the.
The shear pins can be arranged in 1-4 numbers, the force bearing shear pin is a cylindrical copper pin, one end of the force bearing shear pin is arranged in a round hole of the low-pressure cabin shell, the other end of the force bearing shear pin is fixed on the high-pressure cabin shell through a nut, and each shear pin can be broken when being subjected to 600kg of force.
Claims (3)
1. The utility model provides a cased hole cable logging tractor hydraulic pressure is pushed away and is pushed away device which characterized in that: the low-pressure oil bin and the high-pressure oil bin are connected into a whole by a force bearing pin screw; the bearing pin screw is positioned at the rightmost side of the kidney-shaped groove of the high-pressure oil bin shell, and the lower end of the bearing pin screw is connected with the low-pressure oil bin shell in a threaded manner; the bearing pin screw can axially move in the kidney-shaped groove; the plunger pump is fixed on the low-pressure oil bin shell by a fixing screw, the output end of the plunger pump is inserted into the high-pressure oil bin shell, and the output end of the plunger pump and the high-pressure oil bin shell are sealed by a first sealing ring; the plunger pump divides the low-pressure oil bin into two parts which are communicated by two oil passages in the plunger pump; the electromagnetic valve is fixed in the high-pressure oil bin shell through the mounting frame, and the mounting frame and the low-pressure oil bin are sealed by a second sealing ring; one end of the electromagnetic valve is contacted with hydraulic oil in the low-pressure oil bin, and the other end of the electromagnetic valve is contacted with hydraulic oil in the high-pressure oil bin; one end of the push rod extends into the high-pressure oil bin, one end of the push rod is connected with two support rods which are arranged in a Y shape, and the joint of the push rod and the high-pressure oil bin is sealed by a third sealing ring; the two support rods are respectively connected with two traction arms, and traction wheels are arranged on the traction arms; the draft arm passes through fixing nut and is connected with the gear external member, and the gear external member passes through the set screw to be fixed on high-pressure oil storehouse casing.
2. The cased hole wireline logging tractor hydraulic ram of claim 1, wherein: and a shear pin is arranged at the joint of the low-pressure oil bin shell and the high-pressure oil bin shell.
3. The cased hole wireline logging tractor hydraulic ram of claim 1, wherein: 1-4 shearing pins are arranged, and the shearing pins are copper pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162503.4A CN111236839A (en) | 2020-03-10 | 2020-03-10 | Hydraulic sidewall contact device of cased well cable logging tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010162503.4A CN111236839A (en) | 2020-03-10 | 2020-03-10 | Hydraulic sidewall contact device of cased well cable logging tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111236839A true CN111236839A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010162503.4A Pending CN111236839A (en) | 2020-03-10 | 2020-03-10 | Hydraulic sidewall contact device of cased well cable logging tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111236839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653453A (en) * | 2021-08-18 | 2021-11-16 | 中石化石油工程技术服务有限公司 | Downhole reducing environment self-adaptive adjusting device of tractor and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217260B1 (en) * | 1998-07-10 | 2001-04-17 | Dexin He | Downhole reamer with double acting dual piston cylinder |
| CN201391311Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Adaptive reducing backup device |
| CN202673287U (en) * | 2012-06-28 | 2013-01-16 | 北京世纪诚和科技有限责任公司 | Miniature open hole well cable formation tester |
| CN203516246U (en) * | 2013-10-16 | 2014-04-02 | 北京波特耐尔石油技术有限公司 | Rotary guiding tool hydraulic system power driving device |
| CN104879119A (en) * | 2015-04-07 | 2015-09-02 | 武汉海阔科技有限公司 | Device for preventing downhole probe from getting stuck |
| CN206144497U (en) * | 2016-08-30 | 2017-05-03 | 西安旭丰科技发展有限责任公司 | Actuating mechanism of big traction force crawl device |
| CN207377520U (en) * | 2017-10-24 | 2018-05-18 | 西安同兴石油设备技术有限公司 | A kind of executing agency of petroleum horizontal well tractor |
| CN110374582A (en) * | 2019-06-04 | 2019-10-25 | 中国海洋石油集团有限公司 | A kind of hydraulic sidewall contact device and logging instrument |
| CN111255773A (en) * | 2020-03-10 | 2020-06-09 | 中国石油化工集团有限公司 | Hydraulic pushing-free oil injection device of cable logging tractor |
| CN211974877U (en) * | 2020-03-10 | 2020-11-20 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
-
2020
- 2020-03-10 CN CN202010162503.4A patent/CN111236839A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6217260B1 (en) * | 1998-07-10 | 2001-04-17 | Dexin He | Downhole reamer with double acting dual piston cylinder |
| CN201391311Y (en) * | 2009-04-17 | 2010-01-27 | 中国石油天然气集团公司 | Adaptive reducing backup device |
| CN202673287U (en) * | 2012-06-28 | 2013-01-16 | 北京世纪诚和科技有限责任公司 | Miniature open hole well cable formation tester |
| CN203516246U (en) * | 2013-10-16 | 2014-04-02 | 北京波特耐尔石油技术有限公司 | Rotary guiding tool hydraulic system power driving device |
| CN104879119A (en) * | 2015-04-07 | 2015-09-02 | 武汉海阔科技有限公司 | Device for preventing downhole probe from getting stuck |
| CN206144497U (en) * | 2016-08-30 | 2017-05-03 | 西安旭丰科技发展有限责任公司 | Actuating mechanism of big traction force crawl device |
| CN207377520U (en) * | 2017-10-24 | 2018-05-18 | 西安同兴石油设备技术有限公司 | A kind of executing agency of petroleum horizontal well tractor |
| CN110374582A (en) * | 2019-06-04 | 2019-10-25 | 中国海洋石油集团有限公司 | A kind of hydraulic sidewall contact device and logging instrument |
| CN111255773A (en) * | 2020-03-10 | 2020-06-09 | 中国石油化工集团有限公司 | Hydraulic pushing-free oil injection device of cable logging tractor |
| CN211974877U (en) * | 2020-03-10 | 2020-11-20 | 中石化江汉石油工程有限公司测录井公司 | Hydraulic sidewall contact device of cased well cable logging tractor |
Non-Patent Citations (4)
| Title |
|---|
| 周劲辉等: "水平井自扶正式电缆牵引器的设计", 石油机械, vol. 43, no. 2, 28 February 2015 (2015-02-28), pages 79 - 82 * |
| 张志华;李伟;饶海涛;张学亮;: "JHQY-B型大功率牵引器技术特性及其应用", 江汉石油职工大学学报, no. 06, 20 November 2016 (2016-11-20), pages 11 - 13 * |
| 董学凯: "HH2530液压推靠器常见故障及其排除方法", 石油仪器, vol. 24, no. 6, 31 December 2010 (2010-12-31), pages 82 - 84 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653453A (en) * | 2021-08-18 | 2021-11-16 | 中石化石油工程技术服务有限公司 | Downhole reducing environment self-adaptive adjusting device of tractor and control method thereof |
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