Novel unblocking valve for hydraulic jet pump
Through the new hydraulic reset and high-pressure power hydraulic control, the problem of pressure testing and unstable pressure during the downwelling process of traditional hydraulic relief valve is solved, and the efficient operation of automatic reset and blocking flushing is achieved, reducing costs and Waste of time.
Patent Information
- Application Number
- CN202420542580.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The unblocking valve in traditional hydraulic jet pump systems is prone to fall into the down stroke due to collisions and other reasons during the downwelling process, which makes it difficult to test pressure, and it is difficult to check leakage points when the pressure is unstable, resulting in wasted labor and time costs.
A new type of unblocking valve for water conservancy jet pump was designed, and the valve seat was reset by hydraulic force, and the up and down movement of the valve seat was controlled by the power fluid of the high-pressure pump system, so as to realize the pressure test and leakage detection of the first pipe column, and When blocked, use power fluid to flush the bottom of the well.
It realizes automatic resetting of the valve seat and pressure test and leakage measurement, reduces manual resetting costs, improves operating efficiency, simplifies the blockage inspection and flushing process, and significantly improves the convenience and efficiency of production.
Smart Images
Figure CN222207865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil and gas exploitation in oil fields, in particular to a novel unblocking valve for a hydraulic jet pump. Background Art
[0002] Oil and gas production is the process of extracting oil and natural gas buried in underground oil layers. The way oil and gas are extracted from underground to the surface can be divided into: self-flowing and artificial lifting according to whether it is necessary to artificially add energy to the wellbore fluid. Artificial lifting oil production includes: gas lift oil production, pumping rod pump oil production, submersible electric centrifugal pump oil production, hydraulic piston pump oil production and jet pump oil production.
[0003] The utility model discloses a device for controlling the flow direction and the opening and closing of a flow channel of a fluid in a hydraulic jet pump system. The utility model discloses a device for controlling the flow direction of a fluid and the opening and closing of a flow channel in a hydraulic jet pump system. The utility model discloses a key device for realizing the unidirectional entry of formation production fluid into the hydraulic jet pump system and then being lifted to the ground to realize oil and gas exploitation and flushing of a blocked production pipe column to achieve the purpose of unblocking. In the process of lowering the tool into the well, due to collision, setback and the like, the conventional unblocking valve has the hidden danger that the valve seat falls into the downstroke and thus the unblocking channel is opened, resulting in the failure of pressure testing of the first pipe column. If pressure testing is necessary, the first pipe column must be taken out and the valve seat must be manually reset before lowering. If the second pipe column is continuously lowered, the valve body is put into the upper stroke position after the operation is completed, and the two pipe columns are pressure tested together. Once the pressure drops unstably, it is difficult to check whether the leakage point is the first pipe column or the second pipe column, and a large amount of labor and time costs are also wasted. To this end, the utility model discloses a device for controlling the flow direction and the opening and closing of a flow channel of a fluid in a hydraulic jet pump system. Utility Model Content
[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a new type of unblocking valve for a hydraulic jet pump, which can reset the valve seat inside the unblocking valve by hydraulic force, thereby effectively realizing the pressure test and leak detection of the first trip pipe string, providing a strong guarantee for the smooth progress of subsequent work, and having a significant effect of reducing costs and increasing efficiency.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of unblocking valve for a hydraulic jet pump, comprising a pump barrel, a separation joint is provided inside the pump barrel, a valve body is installed on the right side of the separation joint, six first through holes are opened on the right side of the outer surface of the valve body, a valve cover is connected to the left end of the valve body, a valve seat is slidably provided inside the valve body, two second through holes are opened on the outer surface of the valve seat, a valve ball is provided between the valve seat and the valve cover, a lower joint is installed inside the pump barrel, and the right end of the valve body is connected to the inner wall of the lower joint, and a wire plug is provided inside the right end of the lower joint.
[0006] Furthermore, a retaining ring is fixedly connected to the outer surface of the valve seat, which can limit the valve seat and prevent the valve seat from moving too much, causing the valve seat to squeeze the valve ball and affect normal oil delivery operations.
[0007] Furthermore, a pipeline interface is provided on the inner wall of the right end of the valve seat to facilitate the connection of the valve seat to the oil pipe and to facilitate overall operation.
[0008] Compared with the prior art, the new type of unblocking valve for hydraulic jet pump has the following beneficial effects:
[0009] 1. The utility model uses the power fluid of the ground high-pressure pump system to pressurize the power fluid, so that the power fluid passes through the gap between the pump barrel and the valve body, and then enters between the valve seat and the valve body through the first through hole, and uses the pressure difference to control the valve seat to reset, so as to achieve the first string pressure test operation. In the process of oil and gas production, once the oil layer screen is blocked, the production pump core can be pulled out, the unblocking pump core can be put in, and the valve body can be pushed into the downstroke to open the flow channel by using the high-pressure power fluid, so as to achieve the goal of washing the sand blockage at the bottom of the well without scooping the ball.
[0010] 2. The utility model uses two sealing surfaces of the valve seat to realize free switching of the valve seat for different upward and downward working purposes through hydraulic force. The switching can be achieved by simply reversing the ground hydraulic circulation process, which is convenient and fast, reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a cross-sectional view of the structure of the utility model;
[0012] Figure 2 This is a schematic diagram of the kinetic energy of oil production work of the utility model;
[0013] Figure 3 It is a schematic diagram of the kinetic energy of unblocking of the utility model.
[0014] In the figure: 1, pump barrel; 2, separation joint; 3, valve cover; 4, valve ball; 5, valve body; 6, retaining ring; 7, valve seat; 8, interface; 9, thread plug; 10, lower joint; 11, first through hole; 12, second through hole. DETAILED DESCRIPTION
[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0016] To this end, the present embodiment provides a new type of unblocking valve for a hydraulic jet pump. The device can perform a pressure test on the unblocking valve before it is lowered into the well to detect whether the unblocking valve can be used normally. At the same time, it can reset the internal valve seat of the unblocking valve when the unblocking valve does not come out of the well, thereby effectively improving the overall convenience of use.
[0017] See also Figures 1 to 3 This embodiment proposes a new type of unblocking valve for a hydraulic jet pump, including a pump barrel 1, a separation joint 2 is provided inside the pump barrel 1, a valve body 5 is installed on the right side of the separation joint 2, six first through holes 11 are opened on the right side of the outer surface of the valve body 5, a valve cover 3 is connected to the left end of the valve body 5, and a valve seat 7 is slidably provided inside the valve body 5.
[0018] A retaining ring 6 is fixedly connected to the outer surface of the valve seat 7 to limit the valve seat 7 and prevent the valve seat 7 from moving too much, which would cause the valve seat 7 to squeeze the valve ball 4 and affect the normal oil discharge operation.
[0019] The entire valve structure is embedded in the lower end of the working cylinder of the hydraulic jet pump.
[0020] The inner wall of the right end of the valve seat 7 is provided with a pipeline interface 8, which facilitates the valve seat 7 to be connected to the oil pipe and facilitates the overall operation.
[0021] Two second through holes 12 are formed on the outer surface of the valve seat 7, a valve ball 4 is arranged between the valve seat 7 and the valve cover 3, a lower joint 10 is installed inside the pump barrel 1, and the right end of the valve body 5 is connected to the inner wall of the lower joint 10, and a wire plug 9 is arranged inside the right end of the lower joint 10.
[0022] First, the unblocking valve in the present application needs to be used in conjunction with a working pump core and an unblocking pump core. The output end of the working pump core is open on the side, while the unblocking pump core is open at the end.
[0023] Working principle: After the oil and gas well is lowered into the tubing, the production tubing must be pressure tested to ensure that it can be used only after it is leak-proof. For production wells with a double-tubing structure, after the first trip of tubing is lowered, the valve seat may be opened in the lower stroke unblocking position due to collisions, setbacks, etc. during the lowering process. At this time, the valve seat can be automatically reset to the upper stroke production position by using the sealing surface area difference in the new valve body structure through normal test pressure, thereby realizing the oil pipe pressure test operation and avoiding the manual reset process of re-raising the oil pipe. After the oil and gas well operation is completed, in the normal production process, if the screen pipe is blocked, the unblocking operation is performed, and the production pump core inside the separation joint 2 is replaced with the unblocking pump core. The output end of the unblocking pump core passes through the inner tube inside the separation joint 2, so that the power fluid can directly flow into the inside of the valve cover 3, and the power fluid pushes the valve ball 4 and the valve seat 7 to move downward, and the power fluid enters the inside of the valve seat 7 from the second through hole 12, and then the power fluid flushes the bottom hole oil layer screen pipe for cleaning.
Claims
1. A novel unblocking valve for a hydraulic jet pump, comprising a pump barrel (1), characterized in that: The pump barrel (1) is provided with a separation joint (2) inside, a valve body (5) is installed on the right side surface of the separation joint (2), six first through holes (11) are opened on the right side of the outer surface of the valve body (5), the left end of the valve body (5) is connected to the valve cover (3), a valve seat (7) is slidably arranged inside the valve body (5), two second through holes (12) are opened on the outer surface of the valve seat (7), a valve ball (4) is arranged between the valve seat (7) and the valve cover (3), a lower joint (10) is installed inside the pump barrel (1), and the right end of the valve body (5) is connected to the inner wall of the lower joint (10), and a thread plug (9) is arranged inside the right end of the lower joint (10).
2. The new type of unblocking valve for a hydraulic jet pump according to claim 1 is characterized in that: A retaining ring (6) is fixedly connected to the outer surface of the valve seat (7).
3. The new type of unblocking valve for a hydraulic jet pump according to claim 1 is characterized in that: The inner wall of the right end of the valve seat (7) is provided with a pipeline interface (8).