CN100343515C - Horizontal oil-well pump - Google Patents
Horizontal oil-well pump Download PDFInfo
- Publication number
- CN100343515C CN100343515C CNB2004100440493A CN200410044049A CN100343515C CN 100343515 C CN100343515 C CN 100343515C CN B2004100440493 A CNB2004100440493 A CN B2004100440493A CN 200410044049 A CN200410044049 A CN 200410044049A CN 100343515 C CN100343515 C CN 100343515C
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- Prior art keywords
- valve
- well pump
- oil well
- center tubes
- horizontal oil
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Abstract
The present invention relates to a horizontal oil well pump which chiefly solves the problem that the sealing effect of a fixed pump valve of the existing oil well pump is poor. The present invention is characterized in that an upper joint (1) and a lower joint (2) are respectively connected to a central pipe body (6) which can rotate along an axial line of the central pipe body and is fixed, and on an eccentric block (7) with a flute which is arranged on the upper half part of the axial line. A sieve pipe (10) is sheathed outside the central pipe body (6). A circular hole is arranged on the lateral wall of the central pipe body (6), and a valve base (8) above which a valve ball (9) is arranged is fixed in the circular hole. The imbalance side of the eccentric block (7) and a lateral wall hole of the central pipe body (6) are arranged at the same side of the axial line. The horizontal oil well pump has the characteristic that the sealing effect of a pump valve used in a horizontal well is favorable.
Description
Technical field:
The present invention relates to used oil well pump in the oil recovery field, oil field, especially horizontal oil well pump.
Background technique:
In the oil recovery process of oil field, usually to beat some horizontal wells, because the standing valve valve ball of conventional oil well pump below moves along the pump barrel axial direction, this oil well pump can not use because of the valve ball valve seat position that can't fall back in horizontal well, Chinese patent 00234044.5 discloses the strong enclosed oil well pump of a kind of orientation, it wherein mainly is the improvement of standing valve valve, utilize spring to force valve valve ball return, in some gradient wells, use and play good effect, but in horizontal well, use the valve valve to be subjected to the sealing effect between gravity effect and the valve seat poor, influence the ordinary production of horizontal well.
Summary of the invention:
In order to solve the problem of existing oil well pump standing valve valve seal weak effect, the invention provides a kind of horizontal oil well pump, this horizontal oil well pump has use valve valve seal good effectiveness in horizontal well.
Technological scheme of the present invention is: this horizontal oil well pump comprises lower contact and center tubes, last lower contact is connected with short circuit and starting taper respectively, last lower contact is connected to can be along on the eccentric mass of its rotational and center tubes that fixes and axis first half fluting, center tubes is with screen casing outward, having circular hole on the center tubes sidewall and be equipped with the valve seat of valve valve ball above the internal fixation of hole, the areole of laying particular stress on side and center tubes of eccentric mass is at its axis homonymy.
Above-mentioned upper connection links to each other with center tubes by overcoat, bearing and upper baffle ring: lower contact links to each other with eccentric mass by bearing and lower baffle ring; Valve seat is fixed by jackscrew; The difference of the maximum outside diameter of the maximum outside diameter of short circuit and starting taper and center tubes and eccentric mass is 6mm～10mm.
The present invention has following beneficial effect: owing to take such scheme, center tubes is fixed on one with eccentric mass and can rotates around the central axis of last lower contact, when in horizontal well, using, eccentric mass is under action of gravity, it is laid particular stress on side and remains downwards, the areole of laying particular stress on side and center tubes of eccentric mass is at its axis homonymy, and then make in the center tubes valve seat all the time below show the valve valve ball up, here the gravity of valve valve ball can not influence its sealing, be utilized on the contrary and played positive effect, be adapted at using in the horizontal well.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present invention.
1-upper connection among the figure, 2-lower contact, 3-jackscrew, 4-short circuit, 5-starting taper, 6-center tubes, 7-eccentric mass, 8-valve seat, 9-valve valve ball, 10-screen casing, 11-overcoat, 12-bearing, 13-upper baffle ring, 14-lower baffle ring.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, this horizontal oil well pump comprises lower contact (1,2) and center tubes 6, last lower contact (1,2) be connected with short circuit 4 and starting taper 5 respectively, upper connection 1 links to each other with center tubes 6 by overcoat 11, bearing 12 and upper baffle ring 13, lower contact 2 links to each other with eccentric mass 7 by bearing 12 and lower baffle ring 14, the axis first half fluting of eccentric mass 7, center tubes 6 fixes with eccentric mass 7 and can be along last lower contact (1,2) rotational, eccentric mass 7 are under action of gravity, and it is laid particular stress on side and remains downwards; The center tubes 6 outer screen casings 10 that are with, on center tubes 6 sidewalls, have circular hole and at hole internal fixation valve seat 8, there is hollow jackscrew 3 valve seat 8 belows, the effect of jackscrew 3 is fixed valve bases 8, valve valve ball 9 is placed in valve seat 8 tops, the areole of laying particular stress on side and center tubes 6 of eccentric mass 7 makes valve seat 8 be in the below all the time at its axis homonymy.The difference of the maximum outside diameter of the maximum outside diameter of short circuit 4 and starting taper 5 and center tubes 6 and eccentric mass 7 is 6mm～10mm, avoids because of center tubes 6 or eccentric mass 7 and its rotation of pit shaft friction obstruction.Avoided valve valve ball 9 to be subjected to the deficiency that influences the sealing effect difference of gravity when this invention is used in horizontal well, utilized gravity to make the effect of sealing reach best on the contrary, be fit to use in the oilfield horizontal well.
During actual the use, Placement is the same with existing pump, and when upstroke, the travelling valve that these pump short circuit 4 right-hand members connect is closed, valve valve ball 9 on the fixed valve base 8 moves upward under the pressure difference effect, and crude oil enters this pump right chamber from the space between fixed valve base 8 and the valve valve ball 9; During down stroke, travelling valve is opened, and valve valve ball 9 drops on the fixed valve base 8 under the effect of gravity skill right chamber fluid pressure, makes valve valve ball 9 and fixed valve base 8 closures, at this moment, in the oil pipe that travelling valve enters with travelling valve is connected of the liquid in the right chamber through opening.By the left and right continuous to-and-fro motion of plunger, well liquid constantly is pumped into well head, enter gathering system.
Claims (5)
1, a kind of horizontal oil well pump, comprise lower contact (1,2) and center tubes (6), last lower contact (1,2) be connected with short circuit (4) and starting taper (5) respectively, it is characterized in that: go up lower contact (1,2) being connected to can be along on the eccentric mass (7) of its rotational and center tubes that interfixes (6) and axis first half fluting, the outer screen casing (10) that is with of center tubes (6), have circular hole and be equipped with the valve seat (8) of valve valve ball (9) on center tubes (6) sidewall above the internal fixation of hole, the areole of laying particular stress on side and center tubes (6) of eccentric mass (7) is at its axis homonymy.
2, horizontal oil well pump according to claim 1 is characterized in that: upper connection (1) links to each other with center tubes (6) by overcoat (11), bearing (12) and upper baffle ring (13).
3, horizontal oil well pump according to claim 1 is characterized in that: lower contact (2) links to each other with eccentric mass (7) by bearing (12) and lower baffle ring (14).
4, horizontal oil well pump according to claim 1 is characterized in that: valve seat (8) is fixing by jackscrew (3).
5, horizontal oil well pump according to claim 1 is characterized in that: the difference of the maximum outside diameter of the maximum outside diameter of short circuit (4) and starting taper (5) and center tubes (6) and eccentric mass (7) is 6mm～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100440493A CN100343515C (en) | 2004-11-10 | 2004-11-10 | Horizontal oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100440493A CN100343515C (en) | 2004-11-10 | 2004-11-10 | Horizontal oil-well pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619146A CN1619146A (en) | 2005-05-25 |
| CN100343515C true CN100343515C (en) | 2007-10-17 |
Family
ID=34763807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100440493A Expired - Fee Related CN100343515C (en) | 2004-11-10 | 2004-11-10 | Horizontal oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100343515C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1204695A1 (en) * | 1982-06-22 | 1986-01-15 | Центральная Научно-Исследовательская Лаборатория Производственного Объединения "Нижневартовскнефтегаз" | Wellhead equipment for sucker-rod wells |
| SU1384725A1 (en) * | 1986-03-24 | 1988-03-30 | Центральная научно-исследовательская лаборатория Производственного объединения "Укрнефть" | Apparatus for pumping granulated material into well |
| CN2387283Y (en) * | 1999-09-10 | 2000-07-12 | 中原石油勘探局机械制造总厂 | Dischargeable oil-well pump |
| CN2479252Y (en) * | 2001-06-05 | 2002-02-27 | 张晓义 | Eccentric valve type steam oil-well pump |
| CN2736556Y (en) * | 2004-10-16 | 2005-10-26 | 大庆油田有限责任公司 | Horizontal oil well pump |
-
2004
- 2004-11-10 CN CNB2004100440493A patent/CN100343515C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1204695A1 (en) * | 1982-06-22 | 1986-01-15 | Центральная Научно-Исследовательская Лаборатория Производственного Объединения "Нижневартовскнефтегаз" | Wellhead equipment for sucker-rod wells |
| SU1384725A1 (en) * | 1986-03-24 | 1988-03-30 | Центральная научно-исследовательская лаборатория Производственного объединения "Укрнефть" | Apparatus for pumping granulated material into well |
| CN2387283Y (en) * | 1999-09-10 | 2000-07-12 | 中原石油勘探局机械制造总厂 | Dischargeable oil-well pump |
| CN2479252Y (en) * | 2001-06-05 | 2002-02-27 | 张晓义 | Eccentric valve type steam oil-well pump |
| CN2736556Y (en) * | 2004-10-16 | 2005-10-26 | 大庆油田有限责任公司 | Horizontal oil well pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1619146A (en) | 2005-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071017 Termination date: 20101110 |