CN201443349U - Anti-spray machine below screw pump - Google Patents
Anti-spray machine below screw pump Download PDFInfo
- Publication number
- CN201443349U CN201443349U CN2009200161987U CN200920016198U CN201443349U CN 201443349 U CN201443349 U CN 201443349U CN 2009200161987 U CN2009200161987 U CN 2009200161987U CN 200920016198 U CN200920016198 U CN 200920016198U CN 201443349 U CN201443349 U CN 201443349U
- Authority
- CN
- China
- Prior art keywords
- screw pump
- cylinder sleeve
- machine below
- track groove
- spray machine
- 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.)
- Expired - Lifetime
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Abstract
The utility model belongs to oil-gas field downhole tools, particularly relates to an anti-spray machine below a screw pump, which comprises a cylinder sleeve (2), a prepared cap (3), a center pipe (4), a rubber bobbin (5) and a spacer ring (6). Two symmetrical track grooves are arranged on an upper joint (1), and a lower joint (7) is provided with two bumps (7-1) limited inside a track groove axial groove (1-1) and a track groove circumferential groove (1-2) of the upper joint (1). The anti-spray machine below the screw pump has the advantages of having anti-spray function, preventing high pressure well fluid from overflowing and polluting a well head, avoiding losing ground layer energy and improving operation efficiency.
Description
Technical field
The utility model belongs to the oil gas field downhole tool, preventer under particularly a kind of screw pump pump.
Background technology
At present, connecting anchor under the employing pump in the well operations under the screw pump of oil field goes into the well, because of anchor does not have the blowout prevention function, cause high-pressure well liquid excessive, pollute well head, the loss stratum energy, influence duty cycle, preventer nonreactive resistance function under the existing screw pump pump that adopts, going into the well is hampered opens inefficacy easily, cause well liquid excessive, can not blowout prevention during lift pipe string.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of reliable operation is provided, good sealing effect, preventer under the screw pump pump of blowout prevention when having anti-resistance function and playing lower tubular column.
The technical scheme that the utility model technical solution problem adopts is: preventer comprises cylinder sleeve, is equipped with cap, central tube, packing element, spacer ring under the screw pump pump; Be characterized in that top connection is provided with the track groove of two symmetries, it is spacing in the track groove axial groove and circumferential slot of top connection that lower contact is provided with two projections.
The beneficial effects of the utility model are: preventer has the blowout prevention function under the screw pump pump, prevents that high-pressure well liquid is excessive and pollutes well head, and the stratum energy that avoids damage improves operating efficiency.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is that the preventer master looks sectional view under the screw pump pump.
Fig. 2 is the partial enlarged drawing of top connection among Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Among the figure, the 1-top connection; 1-1-track groove axial groove; 1-2-track groove circumferential slot; The 2-cylinder sleeve; 3-is equipped with cap; The 4-central tube; The 5-packing element; The 6-spacer ring; The 7-lower contact; 7-1-lower contact spacing block set;
The specific embodiment
With reference to accompanying drawing 1～3, top connection 1 and cylinder sleeve 2 are by being threaded togather, top connection is provided with the track groove axial groove 1-1 and the circumferential slot 1-2 of two symmetries, in cylinder sleeve 2 with being equipped with cap 3 and central tube 4 by being threaded togather, packing element 5 sealings are respectively arranged on cylinder sleeve 2 and the central tube 4, shoulder limit mounting on the central tube 4 is in cylinder sleeve 2, central tube 4 bottoms and lower contact 7 are threaded to one, have in the lower contact 7 among the track groove axial groove 1-1 and circumferential slot 1-2 of spacing two correspondences in top connection 1 of the lower contact spacing block set 7-1 of two correspondences.
The operating principle of preventer is under the screw pump pump: connecting screw rod pump on the preventer under the screw pump pump, following connection anchor, when going into the well, the projection 7-1 of two correspondences in the lower contact 7 is in the circumferential slot of the track groove of two correspondences of top connection 1, cylinder sleeve 2 forms one and seals and cross the liquid passage on the cylinder sleeve 2 with being equipped with cap 3, central tube 4, packing element 5, realizes the tubing string blowout prevention of going into the well; After anchor sets, dextrorotation tubing string one circle, cylinder sleeve 2, to be equipped with cap 3, central tube 4, packing element 5, lower contact 7 one motionless, top connection 1, cylinder sleeve 2 one are just changeed, the lower contact spacing block set 7-1 of two correspondences of lower contact 7 enters in the axial groove 1-1 of track groove of two correspondences of top connection 1, transfer tubing string again, top connection 1, cylinder sleeve 2 are descending, and the liquid passage of crossing on the cylinder sleeve 2 is opened; During lift pipe string, top connection 1, cylinder sleeve 2 are up, and counter-rotating is again closed and crossed the liquid passage on the cylinder sleeve 2, and the lower contact spacing block set 7-1 of two correspondences of lower contact 7 simultaneously enters in the circumferential slot 1-2 of track groove of two correspondences of top connection 1.
Claims (1)
1. preventer under the screw pump pump comprises cylinder sleeve (2), is equipped with cap (3), central tube (4), packing element (5), spacer ring (6); It is characterized in that top connection (1) is provided with the track groove of two symmetries, it is spacing in the track groove axial groove (1-1) and circumferential slot (1-2) of top connection (1) that lower contact (7) is provided with two projections (7-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161987U CN201443349U (en) | 2009-08-05 | 2009-08-05 | Anti-spray machine below screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200161987U CN201443349U (en) | 2009-08-05 | 2009-08-05 | Anti-spray machine below screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201443349U true CN201443349U (en) | 2010-04-28 |
Family
ID=42548025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200161987U Expired - Lifetime CN201443349U (en) | 2009-08-05 | 2009-08-05 | Anti-spray machine below screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201443349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355192A (en) * | 2016-05-10 | 2017-11-17 | 辽宁新华仪器有限公司 | A kind of screw pump anti-blowout anchoring tool |
-
2009
- 2009-08-05 CN CN2009200161987U patent/CN201443349U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355192A (en) * | 2016-05-10 | 2017-11-17 | 辽宁新华仪器有限公司 | A kind of screw pump anti-blowout anchoring tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100428 |
|
| CX01 | Expiry of patent term |