CN102877826B - Built-in airtight logging device - Google Patents
Built-in airtight logging device Download PDFInfo
- Publication number
- CN102877826B CN102877826B CN201210363994.4A CN201210363994A CN102877826B CN 102877826 B CN102877826 B CN 102877826B CN 201210363994 A CN201210363994 A CN 201210363994A CN 102877826 B CN102877826 B CN 102877826B
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- CN
- China
- Prior art keywords
- propeller
- blowout prevention
- prevention box
- sliding sleeve
- 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.)
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Links
- 230000002265 prevention Effects 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims description 11
- 238000012856 packing Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 210000000078 claw Anatomy 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gasket Seals (AREA)
- Sealing Devices (AREA)
Abstract
A built-in airtight logging device mainly solves the problems that in the prior art, during logging, the overflow amount of a blowout prevention pipe is large, and a sealing packing in a blowout prevention box cannot be adjusted. The method is characterized in that: both sides of the middle part of the propeller assembly are connected with propeller lead screws (2), one end of each propeller lead screw (2) is connected with a propeller pressure head (3), and the front end of each propeller pressure head (3) is connected with a propeller pressure claw (4) capable of rotating downwards; prevent spouting box (12) middle part outer wall on be equipped with convex propeller pressure platform (11), and prevent spouting box (12) sub-unit connection have separation sliding sleeve (10), it has connector card pearl (9) to inlay on separation sliding sleeve (10) inner wall, is equipped with annular connector draw-in groove (8) on cable head (7) outer wall, connector draw-in groove (8) and connector card pearl (9) cooperate. The built-in airtight logging device can adjust the tightness of a packing in the blowout prevention box, so that the overflow amount is controlled when the blowout prevention box is injected into a well for logging.
Description
Technical field
The present invention relates to oilfield, especially a kind of built-in airtight well logging apparatus.
Background technology
Because oil field Injection Well borehole pressure is high, when causing well logging, lubricator spillway discharge is large, is difficult to control at any time, not only affects the admission of well-log information, and the fluid discharge of overflowing in well can damage environment.At present, in well logging construction, spillway discharge control method is sealed cable by the rubber mats in the blowout prevention box of lubricator upper end, and this method existing problems are: if 1, rubber pad in blowout prevention box fills too tight, then motionless under instrument, if dress get Tai Song, then spillway discharge is too large; 2, cable constantly moves in well logging, and produce friction to rubber pad, rubber pad endoporus can grind larger and larger, and the blowout prevention box that rubber pad is housed is the top at lubricator, overhead have more than ten meters high, people cannot get on and to adjust at any time it, and spillway discharge can not get controlling.
Summary of the invention
In order to overcome in prior art survey into time lubricator spillway discharge large, blowout prevention box in the sealed packing deficiency that cannot adjust, the invention provides a kind of built-in airtight well logging apparatus, the degree of tightness of packing in this built-in airtight well logging apparatus proof adjustable spray box, when making injection well log, spillway discharge is controlled.
Technical scheme of the present invention is: a kind of built-in airtight well logging apparatus, comprise cable head, blowout prevention box, propeller assembly, connect well head bottom described propeller assembly, top connects lubricator, in the middle part of described propeller assembly, both sides are connected with propeller leading screw, one end propeller leading screw being positioned at propeller assembly center is connected with propeller pressure head, and the front end of propeller pressure head is connected with the propeller paw that can be rotated down;
The propeller that in the middle part of described blowout prevention box, outer wall is provided with protrusion is presented a theatrical performance as the last item on a programme, and blowout prevention box bottom is connected with separation sliding sleeve, described separation sliding sleeve inwall is inlaid with connector card bead, described cable head outer wall is provided with the connector draw-in groove of annular, and described connector draw-in groove matches with connector card bead.
The present invention has following beneficial effect: owing to taking such scheme, and blowout prevention box can be compressed into propeller assembly by propeller paw by this device, realizes setting step-down in pipe; And surveying in process, lubricator and propeller assembly can disconnect, and expose blowout prevention box, adjust the degree of tightness of rubber pad according to spillway discharge situation at any time, thus are controlled by spillway discharge in suitable degree, the problem that when solving well logging, lubricator spillway discharge is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Snap ring is separated under 1-, 2-propeller leading screw, 3-propeller pressure head, 4-propeller paw, the upper seal section of 5-in figure, 6-lubricator thread, 7-cable head, 8-connector draw-in groove, 9-connector card bead, 10-is separated sliding sleeve, and 11-propeller is presented a theatrical performance as the last item on a programme, 12-blowout prevention box, 13-packing pressure cap.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of built-in airtight well logging apparatus, comprise cable head 7, blowout prevention box 12, propeller assembly, described propeller assembly integral is " ten " font, well head is threaded connection bottom it, and threaded upper portion inwall is provided with the lower separation snap ring 1 of protrusion, propeller assembly top is provided with seal section 5, and upper seal section 5 top is connected with lubricator by lubricator thread 6.The left and right sides in the middle part of described propeller assembly is connected with propeller leading screw 2, propeller assembly is extend into inner inside propeller leading screw 2, and one end propeller leading screw 2 being positioned at propeller assembly center is connected with propeller pressure head 3, the front end of propeller pressure head 3 is connected with propeller paw 4, described propeller paw 4 is connected on propeller pressure head 3 by rotating shaft, propeller paw 4 can rotate around the shaft, and there is spring between propeller paw 4 and rotating shaft, propeller paw 4 top is fixed with limited block simultaneously, such propeller paw 4 can be rotated down in the effect bottom of external force, but can not rotate up.
Described blowout prevention box 12 inside is filled with packing, and blowout prevention box 12 top connects packing box pressing cap 13, can compress packing by rotating packing pressure cap 13.Blowout prevention box 12 external surface is provided with groove, places O-ring seals, when cable is transferred, sealed by this O-ring seals and upper seal section 5 in groove.The propeller that in the middle part of blowout prevention box 12, outer wall is provided with protrusion presents a theatrical performance as the last item on a programme 11, and blowout prevention box 12 bottom is connected with and is separated sliding sleeve 10, and described separation sliding sleeve 10 inwall is inlaid with connector card bead 9, and connector card bead 9 is through after blowout prevention box 12 inwall, and its fraction exposes.Described cable head 7 outer wall is provided with the connector draw-in groove 8 of annular, and described connector draw-in groove 8 matches with connector card bead 9, and connector card bead 9 can be stuck in connector draw-in groove 8.
Before well logging, first propeller assembly is arranged on well head, blowout prevention box 12 is connected with instrument string, after connecting, separation sliding sleeve 10 is upwards pushed away, cable head 7 is inserted in blowout prevention box 12, makes connector card bead 9 enter in connector draw-in groove 8, be separated sliding sleeve 10 and rebound the two is locked.The blowout prevention box 12 connected is pushed in lubricator with instrument string, the lubricator thread 6 of lubricator with propeller assembly top is connected.Open and produce gate and Zong Zha, lower payout, instrument string moves down with blowout prevention box 12, when blowout prevention box 12 is sitting in upper seal section 5 place, due to the stop of the O-ring seals of blowout prevention box 12 outside, cable display is hampered, by propeller leading screw 2, propeller pressure head 3 is pushed away forward, propeller paw 4 is pressed in propeller and presents a theatrical performance as the last item on a programme on 11, and push away before continuation, propeller paw 4 rotates, its front end press against propeller indent 11 and presses down, drawn in by blowout prevention box 12 in upper seal section 5, at this moment the O-ring seals of blowout prevention box 12 outside and upper seal section 5 inner wall sealing, realize setting step-down in pipe.Meanwhile, in blowout prevention box 12 folding process, be separated sliding sleeve 10 and withstand on lower separation snap ring 1, be separated on sliding sleeve 10 and move, connector card bead 9 is discharged, and instrument string separates with blowout prevention box 12, and instrument is gone into the well, and starts normally to log well.In normal well logging, to realize in lubricator after step-down by this environment protection separating type well logging obturator, by lubricator thread 6, lubricator and obturator are disconnected, 50cm is carried by lubricator, expose blowout prevention box 12, according to blowout prevention box 12 place spillway discharge situation, rotate the degree of tightness that packing pressure cap 13 adjusts packing at any time, spillway discharge is controlled in suitable degree.
This built-in airtight well logging apparatus structure improvement, it is convenient to install, with low cost, is conducive to the accurate admission of injection well log data; Set in well head obturator assembly by built-in blowout prevention box, can by pressure drop in lubricator about 98%; By the design of built-in blowout prevention box, after lubricator is separated with wellhead assembly, achieves the at any time control of borehole log wellhead operating personnel to spillway discharge, make well logging spillway discharge reach well logging standard-required.Adopt this device to log well, reduce well head liquid discharge value, realize environmental protection well logging; Because the lubricator of this device can be separated with well head, in lubricator, there is no stagnant water post, avoid winter low temperature frozen pipe phenomenon, Injection Well well logging in winter can be realized.
Claims (1)
1. a built-in airtight well logging apparatus, comprise cable head (7), blowout prevention box (12), propeller assembly, well head is connected bottom described propeller assembly, top connects lubricator by lubricator thread (6), it is characterized in that: in the middle part of described propeller assembly, both sides are connected with propeller leading screw (2), one end propeller leading screw (2) being positioned at propeller assembly center is connected with propeller pressure head (3), the front end of propeller pressure head (3) is connected with the propeller paw (4) that can be rotated down, spring is had between propeller paw (4) and rotating shaft, and propeller paw (4) top is fixed with limited block,
Described blowout prevention box (12) external surface is provided with groove, O-ring seals is placed in groove, and the upper seal section (5) on this O-ring seals and propeller assembly top is sealed and matched, the propeller that blowout prevention box (12) middle part outer wall is provided with protrusion presents a theatrical performance as the last item on a programme (11), and blowout prevention box (12) bottom is connected with separation sliding sleeve (10), described separation sliding sleeve (10) top and propeller are presented a theatrical performance as the last item on a programme between (11) and are equipped with spring, and separation sliding sleeve (10) inwall is inlaid with connector card bead (9), described cable head (7) outer wall is provided with the connector draw-in groove (8) of annular, described connector draw-in groove (8) matches with connector card bead (9), described propeller assembly lower inner wall is provided with the lower separation snap ring (1) of protrusion, when blowout prevention box (12) moves down, be separated sliding sleeve (10) to withstand on lower separation snap ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210363994.4A CN102877826B (en) | 2012-09-26 | 2012-09-26 | Built-in airtight logging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210363994.4A CN102877826B (en) | 2012-09-26 | 2012-09-26 | Built-in airtight logging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877826A CN102877826A (en) | 2013-01-16 |
| CN102877826B true CN102877826B (en) | 2015-05-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210363994.4A Active CN102877826B (en) | 2012-09-26 | 2012-09-26 | Built-in airtight logging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102877826B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286239Y (en) * | 1997-04-02 | 1998-07-15 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院完井工艺研究所 | Low-voltage electric cable test wellhead blowout preventor |
| CN2616664Y (en) * | 2003-05-16 | 2004-05-19 | 程世英 | Adjustable high-pressure blowout-preventing polish rod packing box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO312560B1 (en) * | 2000-08-21 | 2002-05-27 | Offshore & Marine As | Intervention module for a well |
-
2012
- 2012-09-26 CN CN201210363994.4A patent/CN102877826B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286239Y (en) * | 1997-04-02 | 1998-07-15 | 中国石油天然气总公司石油勘探开发科学研究院廊坊分院完井工艺研究所 | Low-voltage electric cable test wellhead blowout preventor |
| CN2616664Y (en) * | 2003-05-16 | 2004-05-19 | 程世英 | Adjustable high-pressure blowout-preventing polish rod packing box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102877826A (en) | 2013-01-16 |
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