Efficient thick oil pump
By designing the rubber sleeve and valve seat structure of a high-efficiency heavy oil pump, the problem of frequent pumping out during heavy oil well extraction was solved, achieving efficient steam utilization and energy saving.
Patent Information
- Application Number
- CN202520109133.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In heavy oil well development, existing technologies require frequent pumping out of the well to steam shut down the well, resulting in high operating costs, long operating times, and low energy efficiency.
A high-efficiency heavy oil pump was designed, including an upper connector, an outer pipe, a pump, a rubber sleeve, and a valve seat structure. The rubber sleeve separates the lower part of the steam, and the high-pressure steam pushes a steel ball to seal the air inlet, preventing steam leakage. The pump automatically expands and sets the seal downhole, enabling normal production without having to remove the pump.
It improved the operational efficiency and energy utilization of heavy oil extraction, reduced operating costs and time, and achieved efficient steam utilization.
Smart Images
Figure CN223662046U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oil well pump technical field especially relates to a kind of high-efficiency heavy oil pump. BACKGROUND
[0002] At present, in the exploitation of heavy oil well, steam needs to be injected first, and then the oil well pump is lowered to exploit, and the oil well pump is lifted out of the oil well every time steam is injected, which is high in operation cost, long in time and high in heat loss, and low in energy utilization rate. CONTENT OF UTILITY MODEL
[0003] In order to solve the problems of high operation cost and low energy utilization rate in the exploitation of heavy oil well, the utility model provides a kind of high-efficiency heavy oil pump.
[0004] The technical scheme provided by the utility model is: including upper joint, the upper joint lower part is connected with a section of outer tube by screw thread, the outer tube lower part has a flange extending outward, the flange lower part is equipped with lower joint, the outer tube is equipped with oil well pump inside;
[0005] The oil well pump includes upper valve cover, the upper valve cover upper part is equipped with oil rod joint, the upper valve cover is equipped with overflow hole, the upper valve cover lower part is connected with adapter pipe by screw thread, the upper valve cover and adapter pipe are equipped with upper valve seat between, the upper valve seat upper part space is equipped with steel ball A, the adapter pipe lower part is connected with lower valve cover by screw thread, the lower valve cover lower part is connected with lower valve seat by screw thread, the lower valve seat upper part space is equipped with steel ball B, the lower valve cover is opened with conical hole, and the conical hole of the lower valve cover can be sealed with steel ball B;
[0006] The outer tube is opened with air inlet hole below the lower valve seat, the outer tube is equipped with rubber tube outside the air inlet hole, the outer tube is welded with limit ring on the rubber tube upper part, and the rubber tube and flange are equipped with compression spring between.
[0007] The rubber tube is opened with annular cavity inside, the cavity outside is vulcanized and fixed with circumferentially distributed plate A, the cavity inside is vulcanized and fixed with circumferentially distributed plate B, each plate A and plate B are connected by soluble metal column, and the cavity lower part is opened with liquid inlet hole, so that the rubber tube outer circle is in compressed state.
[0008] The utility model has the advantages that: the high-efficiency heavy oil pump is connected in the lower part of the oil pipe and lowered to the oil layer part, steam is injected into the casing, the rubber tube separates the lower part, the steam pushes the rubber tube to expose the air inlet hole downward, the steam is injected from the air inlet hole, the high-pressure steam pushes the steel ball B to the conical hole sealing, the steam cannot leak upward, the heavy oil exploitation can be carried out normally after the steam soaking is finished, the oil well pump does not need to be lifted out, the operation efficiency and the energy utilization rate are improved, the rubber tube is in contraction state during the process of lowering into the well, and can reach the oil pumping part smoothly, and the rubber tube can be expanded and set in the well automatically. BRIEF DESCRIPTION OF DRAWINGS
[0009] The utility model relates to oil well pump technical field especially relates to a kind of high-efficiency heavy oil pump. Figure 1 It is the structure schematic diagram of the utility model.
[0010] The accompanying Figure 2 The accompanying Figure 1 The enlarged view of A.
[0011] Figure 1 - the upper joint, 2 - the lower joint, 3 - the outer tube, 4 - rubber tube, 5 - the upper valve cover, 6 - the upper valve seat, 7 - adapter pipe, 8 - the lower valve cover, 9 - the lower valve seat, 10 - steel ball A, 11 - sucker rod joint, 12 - conical hole, 13 - steel ball B, 14 - air inlet hole, 15 - cavity, 16 - liquid inlet hole, 17 - plate A, 18 - plate B, 19 - soluble metal column, 20 - limit ring, 21 - flange, 22 - compression spring, 23 - overflow hole. DETAILED DESCRIPTION
[0012] The following is a vertical multi-stage centrifugal pump as an example:
[0013] As Figures 1-2 shown, a high-efficiency heavy oil pump, comprising an upper joint 1, the upper joint 1 is connected to the oil pipe, the upper joint 1 is threadedly connected to a section of outer tube 3 at the lower part, the outer tube 3 has a flange 21 extending outward at the lower part, the flange 21 is provided with a lower joint 2 at the lower part, the lower joint 2 is threadedly connected to a screen pipe at the lower part, the outer tube 3 is provided with a sucker rod pump inside;
[0014] The sucker rod pump comprises an upper valve cover 5, the upper valve cover 5 is provided with a sucker rod joint 11 at the upper part for connecting to a sucker rod, the upper valve cover 5 is provided with an overflow hole 23 at the upper part, the upper valve cover 5 is threadedly connected to an adapter pipe 7 at the lower part, the upper valve cover 5 and the adapter pipe 7 are provided with an upper valve seat 6 therebetween, the upper valve seat 6 is provided with a steel ball A 10 in the space at the upper part, the adapter pipe 7 is threadedly connected to a lower valve cover 8 at the lower part, the lower valve cover 8 is threadedly connected to a lower valve seat 9 at the lower part, the lower valve seat 9 is provided with a steel ball B 13 in the space at the upper part, the above structure is the existing structure of the sucker rod pump, the lower valve cover 8 is provided with a conical hole 12 at the upper part, the conical hole 12 of the lower valve cover 8 can be sealed with the steel ball B 13, the following factors are considered when designing the height: when the sucker rod pump is pumping oil, the oil flow will lift the steel ball B 13 upward, the flow of the oil flow will not push the steel ball B 13 to the conical hole 12;
[0015] The outer tube 3 is provided with an air inlet hole 14 at the lower part below the lower valve seat 9, the outer tube 3 is provided with a rubber tube 4 outside the air inlet hole 14, the outer tube 3 is welded with a limit ring 20 at the upper part of the rubber tube 4, the rubber tube 4 and the flange 21 are provided with a compression spring 22 therebetween.
[0016] The high-efficiency heavy oil pump is connected to the lower part of the oil pipe and is lowered to the oil layer part, steam is injected into the casing, the lower part is separated by the rubber tube 4, the steam pushes the rubber tube 4 downward to expose the air inlet hole 14, the steam is injected from the air inlet hole 14, the high-pressure steam pushes the steel ball B 13 upward and seals the conical hole 12, the steam cannot leak upward, the well can be normally exploited after the steam injection is finished, the sucker rod pump does not need to be pulled out, the operation efficiency and the energy utilization rate are improved.
[0017] The rubber sleeve 4 is internally provided with an annular cavity 15, the outer side of the cavity 15 is vulcanized and fixed with circumferentially distributed plate A 17, the inner side of the cavity 15 is vulcanized and fixed with circumferentially distributed plate B 18, each plate A 17 and plate B 18 are connected through a soluble metal column 19, the lower part of the cavity 15 is provided with a liquid inlet hole 16, at this time the outer circle of the rubber sleeve 4 is in a compressed state, when the high-efficiency heavy oil pump is lowered into the well, the rubber sleeve 4 does not contact the casing, after entering the well, the downhole liquid flows from the liquid inlet hole 16, the soluble metal column 19 dissolves, and the rubber sleeve 4 restores to the natural state and is seated on the inner wall of the casing for sealing.
Claims
1. A high-efficiency heavy oil pump, comprising an upper connector (1), characterized in that: The lower part of the upper connector (1) is threaded to a section of the outer tube (3). The lower part of the outer tube (3) has an outwardly extending flange (21). The lower part of the flange (21) is provided with a lower connector (2). An oil pump is installed inside the outer tube (3). The oil pump includes an upper valve cover (5), with a sucker rod connector (11) on the upper part of the upper valve cover (5) and a flow hole (23) on the upper valve cover (5). The lower part of the upper valve cover (5) is connected to a connecting pipe (7) by a thread. An upper valve seat (6) is installed between the upper valve cover (5) and the connecting pipe (7). A steel ball A (10) is installed in the upper space of the upper valve seat (6). The lower part of the connecting pipe (7) is threaded to a lower valve cover (8). The lower part of the lower valve cover (8) is threaded to a lower valve seat (9). A steel ball B (13) is installed in the upper space of the lower valve seat (9). A conical hole (12) is opened on the lower valve cover (8). The conical hole (12) of the lower valve cover (8) can be sealed with the steel ball B (13). An air inlet (14) is opened in the part below the lower valve seat (9) of the outer tube (3). A rubber sleeve (4) is sleeved on the outside of the air inlet (14) of the outer tube (3). A limit ring (20) is welded on the upper part of the rubber sleeve (4) of the outer tube (3). A compression spring (22) is installed between the rubber sleeve (4) and the flange (21).
2. The high-efficiency heavy oil pump according to claim 1, characterized in that: The rubber tube (4) has an annular cavity (15) inside. The outer side of the cavity (15) is vulcanized and fixed with circumferentially distributed plates A (17) and the inner side of the cavity (15) is vulcanized and fixed with circumferentially distributed plates B (18). Each plate A (17) and plate B (18) is connected by a soluble metal column (19). The lower part of the cavity (15) has a liquid inlet hole (16). At this time, the outer circle of the rubber tube (4) is in a compressed state.