CN112112628A - Smooth surface cable displacement device - Google Patents
Smooth surface cable displacement device Download PDFInfo
- Publication number
- CN112112628A CN112112628A CN202010940445.3A CN202010940445A CN112112628A CN 112112628 A CN112112628 A CN 112112628A CN 202010940445 A CN202010940445 A CN 202010940445A CN 112112628 A CN112112628 A CN 112112628A
- Authority
- CN
- China
- Prior art keywords
- joint
- cable
- fixedly installed
- smooth
- ring groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 210000001503 joint Anatomy 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims 2
- 239000004020 conductor Substances 0.000 abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention relates to the technical field of oil field underground test systems, in particular to a smooth cable displacement device which comprises an adapter, an NPT (non-positive-pressure) threaded joint, a high-pressure hose and an air compressor, wherein the inner side of the upper part of the adapter can be fixedly installed with the outer side of the lower part of an intermediate joint through threaded connection, the inner side of the lower part of the adapter is connected with the NPT threaded joint through threaded connection, one end of the high-pressure hose is fixedly installed with the outer side of the lower part of the NPT threaded joint, and the other end of. The smooth cable is reasonable and compact in structure and convenient to use, well fluid in the smooth cable can be discharged by matching with the cable head, so that the insulativity between the conductor layer of the smooth cable and the steel pipe sealing layer is improved, the service life of the smooth cable is prolonged, and the condition that the underground test operation fails due to the large current of a test instrument after the underground well caused by the well fluid in the smooth cable is avoided.
Description
Technical Field
The invention relates to the technical field of oil field underground test systems, in particular to a smooth cable displacement device.
Background
When the underground test operation of the oil field is carried out, the connection between the smooth cable and a test instrument needs to be realized through a cable head, the smooth cable is provided at present, a conductor, an insulating layer, an armor layer and a steel pipe sealing layer are sequentially arranged from inside to outside, when the smooth cable is connected with a cable head for underground operation, a small amount of well fluid still leaks in the connecting cylinder due to factors such as non-uniform roundness of the smooth cable, sealing problem of the cable head and the like, the well fluid can be reflected from a test layer to the other end of the smooth cable from gaps between a steel pipe sealing layer and the armor wires, gaps between the armor wires and the like, when the cable is released from the well head cable reel and the smooth cable is lifted out of the well, well liquid exists between the whole roll of smooth cable steel tube sealing layer and the armor layer, which brings a challenge to the insulativity between the smooth cable conductor layer and the steel tube sealing layer, therefore, large current of the instrument after the underground is easy to cause, and results such as failure of underground test operation, sharp reduction of service life of the smooth cable and the like are caused.
Disclosure of Invention
The invention provides a smooth cable displacement device, overcomes the defects of the prior art, and can effectively solve the problems that when the conventional smooth cable is used for the underground test operation of an oil field, the subsequent underground test operation fails and the service life of the smooth cable is sharply reduced due to the fact that well fluid enters the interior of the smooth cable.
The technical scheme of the invention is realized by the following measures: a smooth surface cable displacement device is used in cooperation with a cable head to discharge well fluid in a smooth surface cable, the cable head comprises a fishing head, an upper joint, an intermediate joint, a connecting cylinder and a lower joint, the inner side of the lower part of the fishing head is fixedly installed with the outer side of the upper part of the upper joint, the inner side of the lower part of the upper joint is fixedly installed with the outer side of the upper part of the intermediate joint together, the outer side of the lower part of the intermediate joint is fixedly installed with the inner side of the upper part of the connecting cylinder together through threaded connection, the inner side of the lower part of the connecting cylinder is fixedly installed with the outer side of the upper part of the lower joint together, a sealing plug is fixedly installed on the inner side of the upper part of the lower joint, a single-core plug with the lower end extending out of the lower joint is fixedly installed on the inner side of the lower part of the lower joint, the smooth surface cable displacement device comprises an adapter, an NP, the inner side of the lower part of the adapter is connected with an NPT (male screw) threaded joint through threads, one end of the high-pressure hose is fixedly installed with the outer side of the lower part of the NPT threaded joint, and the other end of the high-pressure hose is connected with an air outlet of the air compressor.
The following is further optimization or/and improvement of the technical scheme of the invention:
an inner ring platform can be arranged on the inner wall of the adapter corresponding to the position above the NPT threaded joint, and a sealing gasket is tightly pressed between the lower end face of the inner ring platform and the upper end of the NPT threaded joint.
The middle part of the top end of the upper joint can be provided with an upper mounting ring groove, and the inner side of the upper mounting ring groove is hermetically provided with a Shiviaoke joint.
Above-mentioned intermediate head top inboard fixed mounting has sealing device, and intermediate head bottom inboard is equipped with down the installation annular, and the inboard fixed mounting in installation annular lower part has the clamp ring down, is equipped with fusiform core cover in the lower installation annular of clamp ring top, and installation annular top down is the toper with fusiform core cover upper portion outside assorted upper portion is narrow down, clamp ring top inboard be with fusiform core cover lower part outside assorted back taper shape wide down.
The smooth cable is reasonable and compact in structure and convenient to use, well fluid in the smooth cable can be discharged by matching with the cable head, so that the insulativity between the conductor layer of the smooth cable and the steel pipe sealing layer is improved, the service life of the smooth cable is prolonged, and the condition that the underground test operation fails due to the large current of a test instrument after the underground well caused by the well fluid in the smooth cable is avoided.
Drawings
Fig. 1 is a schematic view of a partial cross-sectional structure of a front view of the present invention in a use state.
The codes in the figures are respectively: 1 is the adapter, 2 is NPT screwed joint, 3 is high-pressure hose, 4 is air compressor, 5 is sealed the pad, 6 is the fishing head, 7 is the top connection, 8 is intermediate head, 11 is the fusiformis core cover.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described with reference to the following examples and figures:
as shown in the attached figure 1, the smooth cable displacement device is used in cooperation with a cable head to discharge well fluid in a smooth cable, the cable head comprises a fishing head 6, an upper joint 7, a middle joint 8, a connecting cylinder and a lower joint, the lower inner side of the fishing head 6 is fixedly installed with the upper outer side of the upper joint 7, the lower inner side of the upper joint 7 is fixedly installed with the upper outer side of the middle joint 8, the lower outer side of the middle joint 8 is fixedly installed with the upper inner side of the connecting cylinder through threaded connection, the lower inner side of the connecting cylinder is fixedly installed with the upper outer side of the lower joint, the upper inner side of the lower joint is fixedly installed with a sealing plug, the upper end of the sealing plug extends into the connecting cylinder, the lower inner side of the lower joint is fixedly installed with a single-core plug of which the lower end extends out of the lower joint, the smooth cable displacement device comprises an adapter 1, an NPT threaded joint, the inboard of 1 upper portion of adapter can be in the same place through threaded connection fixed mounting with the 8 lower part outsides of intermediate head, and the inboard of 1 lower part of adapter has NPT screwed joint 2 through threaded connection, and 3 one end of high-pressure hose and the 2 lower part outsides fixed mounting of NPT screwed joint are in the same place, and 3 other ends of high-pressure hose are connected with 4 air outlets of air compressor. According to the requirement, the NPT threaded joint 2 is a threaded joint with NPT threads as connecting threads, the air compressor 4 is the prior known technology, when the cable head is used for connecting a smooth cable and a testing instrument to carry out oilfield underground testing operation, during installation, the smooth cable sequentially passes through the fishing head 6, the upper joint 7 and the middle joint 8, then an inner conductor exposed after an insulating layer is stripped is connected to a sealing plug, after one-time testing operation is finished, a connecting cylinder is detached from the middle joint 8, a sealing plug is detached from a conductor of the smooth cable, then the inner side of the upper part of the adapter 1 and the outer side of the lower part of the middle joint 8 are fixedly installed together through threaded connection, one end of the exposed conductor of the smooth cable is positioned in the adapter 1 as shown in figure 1, then the air compressor 4 is started, high-pressure air is injected into an inner cavity of the adapter 1 through the air compressor 4, high-pressure gas enters the light incoming surface cable from the gap between the steel pipe sealing layer and the armor layer of the smooth surface cable and the gap between armor wires of the armor layer, thereby well fluid in the smooth surface cable is discharged from one end of a smooth surface cable reel on the reel, the smooth surface cable is guaranteed to be provided, no well fluid exists in the whole smooth surface cable after the well is rolled up, the insulativity between the conductor layer of the smooth surface cable and the steel pipe sealing layer is improved, the service life of the smooth surface cable is prolonged, the large current of a test instrument after the well is caused by the well fluid stored in the smooth surface cable is avoided, and the condition that the underground test operation fails is caused.
The smooth cable displacement device can be further optimized or/and improved according to actual needs:
as shown in the attached figure 1, an inner ring platform is arranged on the inner wall of the adapter 1 corresponding to the position above the NPT threaded joint 2, and a sealing gasket 5 is tightly pressed between the lower end surface of the inner ring platform and the upper end of the NPT threaded joint 2. Guarantee the sealing performance of NPT screwed joint 2 and adapter 1 junction from this, prevent that high-pressure gas from discharging from NPT screwed joint 2 and adapter 1 joint gap.
As shown in figure 1, the middle part of the top end of the upper joint 7 is provided with an upper mounting ring groove, and the inner side of the upper mounting ring groove is hermetically provided with a Shiviaoke joint.
As shown in the attached drawing 1, a sealing device is fixedly mounted on the inner side of the top of the intermediate joint 8, a lower mounting ring groove is arranged on the inner side of the bottom of the intermediate joint 8, a pressing ring is fixedly mounted on the inner side of the lower portion of the lower mounting ring groove, a shuttle-shaped core sleeve 11 is arranged in the lower mounting ring groove above the pressing ring, the top of the lower mounting ring groove is in a conical shape which is matched with the outer side of the upper portion of the shuttle-shaped core sleeve 11 and is narrow at the top, and the inner side of the top of the pressing ring is in a reverse conical shape which.
When the smooth cable is connected with the cable head, the smooth cable sequentially passes through the fishing head, the Shiviaoke joint and the middle joint, and after a sufficient length is exposed, a stainless steel layer with the length not shorter than 130mm is peeled off by a tool; folding an armor layer with the length of about 65mm upwards from the outer side to ensure that each armor wire is attached to the outer side of the fusiform core sleeve, peeling off an insulating layer with the length of about 65mm to expose an inner conductor, and connecting the conductor to a sealing plug; the free ends of all the armor wires of the armor layer are clamped between the shuttle-shaped core sleeve and the middle joint through the compression ring, and finally the steel pipe sealing layer of the smooth cable is fixed through the Shiviaoke joint.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (5)
1. A smooth surface cable displacement device is used for being matched with a cable head to discharge well fluid in a smooth surface cable, and is characterized in that the cable head comprises a fishing head, an upper joint, a middle joint, a connecting cylinder and a lower joint, the inner side of the lower part of the fishing head is fixedly installed with the outer side of the upper part of the upper joint, the inner side of the lower part of the upper joint is fixedly installed with the outer side of the upper part of the middle joint, the outer side of the lower part of the middle joint is fixedly installed with the inner side of the upper part of the connecting cylinder through threaded connection, the inner side of the lower part of the connecting cylinder is fixedly installed with the outer side of the upper part of the lower joint, a sealing plug is fixedly installed on the inner side of the upper part of the lower joint, a single-core plug with the lower end extending out of the lower joint is fixedly installed on the inner side of the lower part of the lower joint, the smooth surface cable displacement device comprises an adapter, an NP, the inner side of the lower part of the adapter is connected with an NPT (male screw) threaded joint through threads, one end of the high-pressure hose is fixedly installed with the outer side of the lower part of the NPT threaded joint, and the other end of the high-pressure hose is connected with an air outlet of the air compressor.
2. The smooth cable displacement device of claim 1 wherein an inner collar is provided on the inner wall of the adapter at a location above the NPT nipple, and a seal is compressed between the lower end surface of the inner collar and the upper end of the NPT nipple.
3. The smooth cable displacement device of claim 1 or 2, wherein the upper fitting has an upper mounting ring groove in the middle of the top end, and the lower mounting ring groove has a Shewanelk fitting sealingly mounted inside.
4. The smooth cable displacement device according to claim 1 or 2, wherein the inner side of the top of the intermediate joint is fixedly provided with a sealing device, the inner side of the bottom of the intermediate joint is provided with a lower mounting ring groove, the inner side of the lower part of the lower mounting ring groove is fixedly provided with a pressing ring, the lower mounting ring groove above the pressing ring is internally provided with a shuttle-shaped core sleeve, the top of the lower mounting ring groove is in a shape of a cone with a narrow top and a wide bottom matched with the outer side of the upper part of the shuttle-shaped core sleeve, and the inner side of the top of the pressing ring is in a shape of an inverted cone with a wide.
5. The smooth cable displacement device according to claim 3, wherein the sealing device is fixedly installed on the inner side of the top of the intermediate joint, the lower installation ring groove is formed on the inner side of the bottom of the intermediate joint, the pressing ring is fixedly installed on the inner side of the lower portion of the lower installation ring groove, the spindle-shaped core sleeve is arranged in the lower installation ring groove above the pressing ring, the top of the lower installation ring groove is in a shape of a cone with a narrow top and a wide bottom, which is matched with the outer side of the upper portion of the spindle-shaped core sleeve, and the inner side of the top of the pressing ring is in a shape of an inverted cone with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010940445.3A CN112112628A (en) | 2020-09-09 | 2020-09-09 | Smooth surface cable displacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010940445.3A CN112112628A (en) | 2020-09-09 | 2020-09-09 | Smooth surface cable displacement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112112628A true CN112112628A (en) | 2020-12-22 |
Family
ID=73802951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010940445.3A Pending CN112112628A (en) | 2020-09-09 | 2020-09-09 | Smooth surface cable displacement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112628A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785885A (en) * | 1987-05-13 | 1988-11-22 | Cherrington Martin D | Method and apparatus for cementing a production conduit within an underground arcuate bore |
| US20050037656A1 (en) * | 2003-08-26 | 2005-02-17 | Cairns James L. | Dry mate connector |
| CN201234084Y (en) * | 2008-07-24 | 2009-05-06 | 福建省泉州电业局 | Water removal processing device for joint cable |
| CN102611033A (en) * | 2012-03-02 | 2012-07-25 | 广东威恒输变电工程有限公司 | Sealing device for connection of cable drying and inflating system and cable |
| CN107819315A (en) * | 2017-12-06 | 2018-03-20 | 中国石油集团西部钻探工程有限公司 | End |
| CN210358395U (en) * | 2019-06-14 | 2020-04-21 | 中国石油集团渤海钻探工程有限公司 | Be used for well cementation pipeline to sweep cleaning device |
-
2020
- 2020-09-09 CN CN202010940445.3A patent/CN112112628A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785885A (en) * | 1987-05-13 | 1988-11-22 | Cherrington Martin D | Method and apparatus for cementing a production conduit within an underground arcuate bore |
| US20050037656A1 (en) * | 2003-08-26 | 2005-02-17 | Cairns James L. | Dry mate connector |
| CN201234084Y (en) * | 2008-07-24 | 2009-05-06 | 福建省泉州电业局 | Water removal processing device for joint cable |
| CN102611033A (en) * | 2012-03-02 | 2012-07-25 | 广东威恒输变电工程有限公司 | Sealing device for connection of cable drying and inflating system and cable |
| CN107819315A (en) * | 2017-12-06 | 2018-03-20 | 中国石油集团西部钻探工程有限公司 | End |
| CN210358395U (en) * | 2019-06-14 | 2020-04-21 | 中国石油集团渤海钻探工程有限公司 | Be used for well cementation pipeline to sweep cleaning device |
Non-Patent Citations (1)
| Title |
|---|
| 成大生, 化学工业出版社 * |
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Application publication date: 20201222 |
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| RJ01 | Rejection of invention patent application after publication |