CN202158012U - Centrifugal pump connecting device for electric submersible pump unit - Google Patents
Centrifugal pump connecting device for electric submersible pump unit Download PDFInfo
- Publication number
- CN202158012U CN202158012U CN 201120250219 CN201120250219U CN202158012U CN 202158012 U CN202158012 U CN 202158012U CN 201120250219 CN201120250219 CN 201120250219 CN 201120250219 U CN201120250219 U CN 201120250219U CN 202158012 U CN202158012 U CN 202158012U
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- Prior art keywords
- electric submersible
- pump unit
- submersible pump
- centrifugal pump
- centrifugal
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Abstract
The utility model relates to a centrifugal pump connecting device for an electric submersible pump unit, which is used for overcoming defects that in the process of putting the electric submersible pump unit among general centrifugal pumps, which is connected through face flanges, ordinary spring cushions and bolts, into a horizontal well and a large-slope well, a shell of the unit frequency is plastically deformed or broken, and connecting bolts are broken. Two or more than two centrifugal pumps of the centrifugal pump connecting device for the electric submersible pump unit, provided by the utility model, are fixedly connected in sequence from top to bottom; the lower end parts of pump bodies of the centrifugal pumps are provided with connecting flanges; seam allowances at the lower ends of the connecting flanges are inserted into inner holes at the upper ends of the pump bodies of the adjacent centrifugal pumps; contact faces of the connecting flanges and the pump bodies of the centrifugal pumps are spherical; gaskets used by the bolts are dish-like bolts; and the spherical faces of the connecting flanges are convex, and the spherical faces at the upper ends of the pump bodies of the centrifugal pumps are concave. The centrifugal pump connecting device for the electric submersible pump unit has advantages that: the structure is rational; the integral flexibility of the electric submersible pump unit can be improved; the success rate of putting the electric submersible pump unit into the well in the use process of the horizontal well and the large-slope well is increased; the service life of the electric submersible pump unit is prolonged; and the production and operation cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of Electric Submersible Pump Unit, particularly relates to a kind of Electric Submersible Pump Unit centrifugal pump connection set, is particularly useful for the Electric Submersible Pump Unit centrifugal pump connection set of horizontal well manufacturing operation.
Background technique
Straight well drills that the oil reservoir number of plies is few because horizontal well technology has overcome, success rate is low not enough; Have ground (or platform) well location portion's point and concentrate characteristics such as freedom; Can effectively improve capacity of oilwell and recovery rate; Be the principal mode of offshore drilling, also become the main direction of land from now on drilling well development.Along with the continuous development of the continuous growth of oil demand and directional well technology is perfect, high-inclination directional well and horizontal well application area are more and more widely.In the oil production equipment of all kinds of artificial lifts, Electric Submersible Pump Unit is the main lifting means that horizontal well, high angle hole are produced.Electric Submersible Pump Unit is connected to form by 2 or 2 above centrifugal pumps and separator, protector, oil-submersible motor pump usually successively; At present, mainly adopt bolt, common compression spring to connect in the Electric Submersible Pump Unit between each parts, because the special well structure (bending point) of horizontal well through face-flange; And the special shape of submersible electric pump (elongated connecting structure); When the process of going into the well is located with angle buildup interval through oil well " dog-leg ", Electric Submersible Pump Unit housing generation local plastic deformation, fracture or connecting bolt often occur and rupture, cause unit to damage or the well that falls; What thereby influence was produced normally carries out, and brings economic loss.
The model utility content
In order to overcome the deficiency that machine unit shell plastic deformation, fracture and connecting bolt fracture often take place the Electric Submersible Pump Unit that adopts face-flange, common spring pad, bolt connecting mode between the existing conventional centrifugal pump in horizontal well, high angle hole are gone into the well process, the utility model provides a kind of novel Electric Submersible Pump Unit centrifugal pump connection set.
The utility model solves the technological scheme that its technical problem adopted: Electric Submersible Pump Unit centrifugal pump connection set comprises centrifugal pump, bolt, packing ring; Centrifugal pump more than 2 or 2 from top to bottom is fixedly connected sequentially; The underpart of centrifugal pump body is an adpting flange; The seam of adpting flange lower end is inserted in the endoporus of adjacent centrifugal pump body upper end, and the surface of contact of adpting flange and centrifugal pump body is a sphere, and the employed packing ring of bolt is a saucer washer; The sphere of adpting flange is protruding sphere, and the sphere of centrifugal pump body upper end is a concave spherical surface.
The beneficial effect of the utility model is; Rational in infrastructure; Can increase the overall flexibility of Electric Submersible Pump Unit, the success rate that the raising Electric Submersible Pump Unit is gone into the well and the working life of submersible electric pump, reduce the manufacturing operation cost greatly in horizontal well, high angle hole using process.
Description of drawings
Fig. 1 is the utility model Electric Submersible Pump Unit centrifugal pump connection set structural representation.
Among the figure: 1. centrifugal pump body, 2. bolt, 3. saucer washer, 4. adpting flange, 5. sphere.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.But what those skilled in the art should know is to the invention is not restricted to listed embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
The utility model Electric Submersible Pump Unit centrifugal pump connection set; Electric Submersible Pump Unit comprises the centrifugal pump more than 2 or 2; And from top to bottom be fixedly connected sequentially; The necking down end of centrifugal pump body 1 underpart is an adpting flange 4, and adpting flange 4 lower ends have seam to be inserted in the adjacent centrifugal pump body 1 upper end endoporus, and adpting flange 4 is a sphere 5 with the surface of contact of centrifugal pump body 1; The sphere 5 of adpting flange 4 is protruding sphere, and the sphere 5 of centrifugal pump body 1 upper end is a concave spherical surface.Bolt 2 passes the hole of top centrifugal pump body 1 adpting flange 4 radial equipartitions, is connected with the axial bolts hole of below centrifugal pump body 1, and bolt 2 employed packing rings are saucer washer 3.
The utility model is according to the structural feature of each parts multi-section serial of Electric Submersible Pump Unit; The centrifugal pump joint adopts sphere to cooperate, and the connecting bolt place adopts saucer washer, makes the relative axis in joint freely to turn an angle; Electric Submersible Pump Unit integral body has certain flexibility; When Electric Submersible Pump Unit during, can avoid the generation of Electric Submersible Pump Unit plastic deformation and fracture accident smoothly through the dog-leg place and the inclination section of oil well in horizontal well, big gradient operation; Improve Electric Submersible Pump Unit in horizontal well, the high angle hole success rate of going into the well, prolong the running time of Electric Submersible Pump Unit.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (2)
1. Electric Submersible Pump Unit centrifugal pump connection set; Comprise centrifugal pump, bolt, packing ring; Centrifugal pump more than 2 or 2 from top to bottom is fixedly connected sequentially, and the underpart of centrifugal pump body is an adpting flange, and the seam of adpting flange lower end is inserted in the endoporus of adjacent centrifugal pump body upper end; It is characterized in that: said adpting flange (4) is sphere (5) with the surface of contact of centrifugal pump body (1), and the employed packing ring of bolt (2) is saucer washer (3).
2. according to the said Electric Submersible Pump Unit centrifugal pump of claim 1 connection set, it is characterized in that: the sphere (5) of said adpting flange (4) is protruding sphere, and the sphere (5) of said centrifugal pump body (1) upper end is a concave spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250219 CN202158012U (en) | 2011-07-15 | 2011-07-15 | Centrifugal pump connecting device for electric submersible pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120250219 CN202158012U (en) | 2011-07-15 | 2011-07-15 | Centrifugal pump connecting device for electric submersible pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158012U true CN202158012U (en) | 2012-03-07 |
Family
ID=45765652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120250219 Expired - Fee Related CN202158012U (en) | 2011-07-15 | 2011-07-15 | Centrifugal pump connecting device for electric submersible pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878114A (en) * | 2011-07-15 | 2013-01-16 | 中国石油集团渤海石油装备制造有限公司 | Connecting device for centrifugal pumps of electrical submersible pump unit |
-
2011
- 2011-07-15 CN CN 201120250219 patent/CN202158012U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878114A (en) * | 2011-07-15 | 2013-01-16 | 中国石油集团渤海石油装备制造有限公司 | Connecting device for centrifugal pumps of electrical submersible pump unit |
| WO2013010375A1 (en) * | 2011-07-15 | 2013-01-24 | 中国石油天然气集团公司 | Centrifugal pump connection device for electric submersible pump unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20190715 |