CN204344118U - The syndeton of a kind of downhole instrument and coupling - Google Patents
The syndeton of a kind of downhole instrument and coupling Download PDFInfo
- Publication number
- CN204344118U CN204344118U CN201420769276.1U CN201420769276U CN204344118U CN 204344118 U CN204344118 U CN 204344118U CN 201420769276 U CN201420769276 U CN 201420769276U CN 204344118 U CN204344118 U CN 204344118U
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- coupling
- downhole instrument
- positive
- communication cable
- joint hoop
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Abstract
The utility model discloses the syndeton of a kind of downhole instrument and coupling.Comprise downhole instrument 1 and coupling 2, downhole instrument is connected through positive and negative joint hoop 3 with coupling, and positive and negative joint hoop one end is provided with nipple 4, and the positive and negative joint hoop other end is provided with hickey 5; The thread rotary orientation of nipple and hickey is contrary; Nipple is threaded with the internal thread 6 in coupling, and hickey is threaded with the external screw thread 7 on downhole instrument; Communication cable 8 on downhole instrument passes from the endoporus of positive and negative joint hoop, and passes from the wire guide 9 coupling.The utility model adds a positive and negative joint hoop on the basis of existing syndeton, positive and negative joint hoop is provided with positive and negative two external threadings, the connection of coupling and downhole instrument can be completed when communication cable is not distorted, by disconnected for communication cable strand, the reliability that communication cable connects can not be improve greatly.
Description
Technical field
the utility model relates to the syndeton of a kind of downhole instrument and coupling, belongs to the technical field preventing downhole instrument communication cable from twisting off.
Background technology
oil field, to development late stage, generally enters the High water cut stage.General oil well many employings multilayer cage integration excavating technology, therefore oilfield technology developing department accurately cannot obtain the detail parameters (as strata pressure, Liquid output, moisture content, temperature etc.) on a certain stratum, can not take effective technological measure for the situation on each stratum.The oil recovery that becomes more meticulous all by every means, is done in a lot of oil field, improves the understanding of formation characteristic.The requirement controlled for down-hole along with oil field is more and more higher, and downhole instrument also progressively develops to direct reading instrument from memory-type instrument.Direct reading instrument is simple to operate, and digital independent is directly perceived, and tie surface equipment can gather the zonal pressure, Temperature numerical etc. in each period, understands reservoir parameter change rule, thus carries out reserve estimate and production capacity budget.Meanwhile, downhole instrument can be controlled as required at any time and carry out action, enter duty fast, cost that minimizing is repeatedly gone into the well.Direct reading instrument can improve the technical level of formation testing greatly, improves the accuracy of test data, strengthens the comparativity between each layer of position in same well, thus sees economic benefit as soon as possible, has important directive significance to the exploitation of oil-gas reservoir and exploration.
one of important component part of direct reading instrument is communication cable.The energising of downhole instrument, test action and data transmission are all inseparable with cable.Because subsurface environment is severe, therefore downhole instrument commonly uses cable is steel pipe type cable, i.e. heart yearn outer wrapping one deck steel pipe, and hardness is higher, strand disconnected phenomenon easily occurs in installation process.
Utility model content
the purpose of this utility model is, provides the syndeton of a kind of downhole instrument and coupling, is twisted off by the communication cable of downhole instrument, to overcome the deficiencies in the prior art with when downhole instrument and coupling.
the technical solution of the utility model:
a syndeton for downhole instrument and coupling, comprises downhole instrument and coupling, downhole instrument and coupling through positive and negative save to bind round be connected, positive and negative joint hoop one end is provided with nipple, and the positive and negative joint hoop other end is provided with hickey; The thread rotary orientation of nipple and hickey is contrary; Nipple is threaded with the internal thread in coupling, and hickey is threaded with the external screw thread on downhole instrument; Communication cable on downhole instrument passes from the endoporus of positive and negative joint hoop, and passes from the wire guide coupling.
in aforementioned coupling structure, the communication cable on described downhole instrument is positioned at the end face side of external screw thread one end on downhole instrument.
in aforementioned coupling structure, the wire guide in described coupling is positioned at coupling sidewall, and parallel with coupling.
in aforementioned coupling structure, the port of export of described wire guide is provided with screwed hole, is provided with seal groove bottom screwed hole.
in aforementioned coupling structure, one end cover that described communication cable passes coupling has sealing ring and housing screw, and housing screw is threaded with the screwed hole of the wire guide port of export, and sealing ring is in housing screw indentation sealing groove.
compared with prior art, the utility model adds a positive and negative joint hoop on the basis of existing syndeton, positive and negative joint hoop is provided with positive and negative two external threadings, the connection of coupling and downhole instrument can be completed when communication cable is not distorted, by disconnected for communication cable strand, the reliability that communication cable connects can not be improve greatly.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
fig. 2 is the position view of communication cable on downhole instrument;
fig. 3 is the structural representation of coupling;
fig. 4 is the structural representation after the utility model has connected;
fig. 5 is the connection diagram of prior art.
being labeled as in accompanying drawing: 1-downhole instrument, 2-coupling, the positive and negative joint hoop of 3-, 4-nipple, 5-hickey, 6-internal thread, 7-external screw thread, 8-communication cable, 9-wire guide, 10-screwed hole, 11-seal groove, 12-sealing ring, 13-housing screw.
Detailed description of the invention
below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
a syndeton for downhole instrument and coupling, comprises downhole instrument 1 and coupling 2, and downhole instrument 1 is connected through positive and negative joint hoop 3 with coupling 2, and positive and negative joint hoop 3 one end is provided with nipple 4, and positive and negative joint hoop 3 other end is provided with hickey 5; The thread rotary orientation of nipple 4 and hickey 5 is contrary; Nipple 4 is threaded with the internal thread 6 in coupling 2, and hickey 5 is threaded with the external screw thread 7 on downhole instrument 1; Communication cable 8 on downhole instrument 1 passes from the endoporus of positive and negative joint hoop 3, and passes from the wire guide 9 coupling 2.Communication cable 8 on downhole instrument 1 is positioned at the end face side of external screw thread 7 one end on downhole instrument 1.Wire guide 9 in coupling 2 is positioned at coupling 2 sidewall, and parallel with coupling 2.The port of export of wire guide 9 is provided with screwed hole 10, is provided with seal groove 11 bottom screwed hole 10.One end cover that communication cable 8 passes coupling 2 has sealing ring 12 and housing screw 13, and housing screw 13 is threaded with the screwed hole 10 of wire guide 9 port of export, and sealing ring 12 is in housing screw 13 indentation sealing groove 11.
Embodiment
the improvement that the utility model carries out mainly for existing syndeton, as shown in Figure 5, the communication cable 8 on downhole instrument 1 is positioned at the end face side of external screw thread 7 one end on downhole instrument 1 to existing syndeton.During installation, first the cable head of communication cable 8 is passed from the wire guide 9 coupling 2, then downhole instrument 1 and coupling 2 are spun, in the process of spinning, communication cable 8 can follow downhole instrument 1 to rotate together, but because the wire guide 9 in coupling 2 is very little, communication cable 8 can not rotate freely in wire guide 9, is easy to communication cable 8 to twist disconnected.Affect the functional reliability of downhole instrument 1.
in order to avoid the generation of above-mentioned situation, as shown in Figure 1 and Figure 4, add a positive and negative joint hoop 3 between downhole instrument 1 and coupling 2, positive and negative joint hoop 3 one end is provided with nipple 4, and positive and negative joint hoop 3 other end is provided with hickey 5; The thread rotary orientation of nipple 4 and hickey 5 is contrary; Screw thread between downhole instrument 1 and positive and negative joint hoop 3 is dextrorotation screw thread, and the screw thread between coupling 2 and positive and negative joint hoop 3 is derotation screw thread, and dextrorotation screw thread is identical with derotation thread size.
the utility model is installed according to the following steps:
1, downhole instrument 1 is fixed on vice, prevents downhole instrument 1 from rotating;
2, coupling 2 is fixed with special tool, make it can only move linearly along downhole instrument 1 axis, but can not rotate.
3, the endoporus of the communication cable 8 on downhole instrument 1 from positive and negative joint hoop 3 is passed, then pass from the wire guide 9 coupling 2, more positive and negative joint hoop 3 is screwed in external screw thread 7 one to two button of downhole instrument 1;
4, coupling 2 is screwed in positive and negative joint hoop 3 one to two button by rotating positive and negative joint hoop 3 again;
5, by the positive and negative joint hoop 3 that turns clockwise, make coupling 2 and downhole instrument 1 screw in positive and negative joint hoop 3 more stubborn tighter simultaneously.
in above-mentioned installation process, due to downhole instrument 1 and coupling 2 all non rotating, only have positive and negative joint hoop 3 to rotate, so communication cable 8 non rotating in installation process, communication cable 8 can not be twisted off.
in unloading process, by being rotated counterclockwise positive and negative joint hoop 3, downhole instrument 1 and the connection of coupling 2 can being removed, also can ensure communication cable 8 non rotating in installation process in unloading process, communication cable 8 can not be twisted off.
Claims (5)
1. the syndeton of a downhole instrument and coupling, comprise downhole instrument (1) and coupling (2), it is characterized in that: downhole instrument (1) and coupling (2) are bound round (3) be connected through positive and negative being saved, positive and negative joint hoop (3) one end is provided with nipple (4), and positive and negative joint hoop (3) other end is provided with hickey (5); The thread rotary orientation of nipple (4) and hickey (5) is contrary; Nipple (4) is threaded with the internal thread (6) in coupling (2), and hickey (5) is threaded with the external screw thread (7) on downhole instrument (1); Communication cable (8) on downhole instrument (1) passes from the endoporus of positive and negative joint hoop (3), and passes from the wire guide (9) coupling (2).
2. syndeton according to claim 1, is characterized in that: the communication cable (8) on described downhole instrument (1) is positioned at the end face side of upper external screw thread (7) one end of downhole instrument (1).
3. syndeton according to claim 1, is characterized in that: the wire guide (9) in described coupling (2) is positioned at coupling (2) sidewall, and parallel with coupling (2).
4. syndeton according to claim 1, is characterized in that: the port of export of described wire guide (9) is provided with screwed hole (10), and screwed hole (10) bottom is provided with seal groove (11).
5. syndeton according to claim 1, it is characterized in that: one end cover that described communication cable (8) passes coupling (2) has sealing ring (12) and housing screw (13), housing screw (13) is threaded with the screwed hole (10) of wire guide (9) port of export, and sealing ring (12) is in housing screw (13) indentation sealing groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420769276.1U CN204344118U (en) | 2014-12-09 | 2014-12-09 | The syndeton of a kind of downhole instrument and coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420769276.1U CN204344118U (en) | 2014-12-09 | 2014-12-09 | The syndeton of a kind of downhole instrument and coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204344118U true CN204344118U (en) | 2015-05-20 |
Family
ID=53227393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420769276.1U Active CN204344118U (en) | 2014-12-09 | 2014-12-09 | The syndeton of a kind of downhole instrument and coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204344118U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464629A (en) * | 2015-12-30 | 2016-04-06 | 上海飞舟博源石油装备技术有限公司 | Submersible diaphragm pump and composite coiled tube oil extraction system |
| CN108418018A (en) * | 2018-03-16 | 2018-08-17 | 武汉奇泰隆机械有限公司 | A kind of downhole electric drilling tool cable steel tube independent suspension connection sealing device |
| CN109141666A (en) * | 2018-09-25 | 2019-01-04 | 国家电网有限公司 | A kind of temperature detecting resistance that temperature value jump is less likely to occur |
| CN110854796A (en) * | 2019-12-13 | 2020-02-28 | 中国石油化工股份有限公司 | Cable connector and connecting method thereof |
| CN114320176A (en) * | 2021-11-18 | 2022-04-12 | 中国海洋石油集团有限公司 | Split oil pipe head and electric pump through oil pipe wellhead construction method |
| CN114575776A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气股份有限公司 | Cable water-plugging packer and assembling method thereof |
-
2014
- 2014-12-09 CN CN201420769276.1U patent/CN204344118U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464629A (en) * | 2015-12-30 | 2016-04-06 | 上海飞舟博源石油装备技术有限公司 | Submersible diaphragm pump and composite coiled tube oil extraction system |
| CN108418018A (en) * | 2018-03-16 | 2018-08-17 | 武汉奇泰隆机械有限公司 | A kind of downhole electric drilling tool cable steel tube independent suspension connection sealing device |
| CN109141666A (en) * | 2018-09-25 | 2019-01-04 | 国家电网有限公司 | A kind of temperature detecting resistance that temperature value jump is less likely to occur |
| CN109141666B (en) * | 2018-09-25 | 2020-06-26 | 国家电网有限公司 | Temperature measuring resistor with temperature value jumping difficultly |
| CN110854796A (en) * | 2019-12-13 | 2020-02-28 | 中国石油化工股份有限公司 | Cable connector and connecting method thereof |
| CN114575776A (en) * | 2020-11-30 | 2022-06-03 | 中国石油天然气股份有限公司 | Cable water-plugging packer and assembling method thereof |
| CN114320176A (en) * | 2021-11-18 | 2022-04-12 | 中国海洋石油集团有限公司 | Split oil pipe head and electric pump through oil pipe wellhead construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |