Lifting plunger for gas recovery and water drainage of gas well
By designing a lifting plunger with a unidirectional flow channel and a gas pressure regulation system, the problem of gas well lifting interruption was solved, dynamic adjustment of liquid lifting quality was achieved, and gas well production and drainage efficiency was improved.
Patent Information
- Application Number
- CN202520002819.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-02
AI Technical Summary
After prolonged use, the energy at the bottom of the well weakens in existing gas well lifting plungers, resulting in insufficient quality of the lifted fluid, which cannot return to the wellhead, causing lifting interruption.
A lifting plunger with a unidirectional flow channel, a flow control annular cavity, and a pressure regulation system was designed. The flow rate is controlled by adjusting the annular plunger and the pressure valve, thereby achieving dynamic adjustment of the liquid lifting quality.
It enables dynamic adjustment of the lifting liquid weight based on changes in gas well energy, avoiding lifting interruptions and improving the efficiency of gas well production and drainage.
Smart Images
Figure CN223594401U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gas drainage device field especially is related to a kind of lifting plunger for gas well gas drainage. BACKGROUND
[0002] Plunger is one of important means of shale gas well liquid drainage gas production, by plunger is put into to well bottom, then plunger and top liquid accumulation are discharged to ground using the energy of well bottom, then plunger is caught by catcher, but with long-time continuous use drainage, well bottom energy can gradually weaken, if continue to lift liquid of same quality, gas well energy deficiency can cause plunger to be unable to return to wellhead after entering well bottom, so a lifting plunger that can adjust lifting quality is needed. SUMMARY
[0003] The utility model discloses a kind of lifting plunger for gas well gas drainage to solve the above-mentioned problems.
[0004] The utility model discloses the following technical solutions to realize the above-mentioned purposes:
[0005] A kind of lifting plunger for gas well gas drainage, including plunger main body and one-way flow channel, the one-way flow channel is arranged in the plunger main body, the one-way flow channel is sequentially from bottom to top bottom straight-flow channel, adjusting cavity and top limit plug cavity, the plunger main body is equipped with flow control ring cavity, adjusting ring plug is arranged in the flow control ring cavity, adjusting ring plug is installed on the top ring surface of adjusting ring plug, adjusting column is installed, the top end of adjusting column extends into adjusting cavity and is installed with sliding carriage, the center of sliding carriage is equipped with sliding hole, sliding rod is slidably inserted into the sliding hole, the top end of sliding rod extends into top limit plug cavity and is installed with one-way plug, negative pressure tank and high-pressure gas tank are embedded and installed on the hole wall of bottom straight-flow channel, the high-pressure gas tank and the negative pressure tank are connected and installed to the bottom of flow control ring cavity by gas pressure valve.
[0006] Further, control protection box is embedded and installed in the inside of plunger main body, wireless controller and battery are installed in the control protection box.
[0007] Further, gas pressure sensor is installed in the flow control ring cavity.
[0008] Further, the bottom end of sliding rod is installed with stop head.
[0009] Further, the one-way plug is conical plug, and the top limit plug cavity is frustum-shaped cavity.
[0010] The beneficial effect lies in: the lifting plunger for gas well gas production and drainage can change the weight of the lifting liquid by driving the maximum stroke displacement of the top plug, remotely adjusts the energy in the wellbore, and avoids the lifting interruption caused by the excessive lifting quality. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a structure schematic view of the lifting plunger for gas well gas production and drainage.
[0012] The reference signs are explained as follows:
[0013] 1, plunger body; 2, one-way flow channel, 21, bottom straight flow channel, 22, adjusting cavity, 23, top limiting plug cavity; 3, flow control ring cavity; 4, negative pressure tank; 5, control protection box; 6, adjusting ring plug; 7, adjusting column; 8, one-way top plug; 9, air pressure sensor; 10, sliding rod; 11, sliding carriage; 12, stop head; 13, air pressure valve; 14, high-pressure gas tank. DETAILED DESCRIPTION
[0014] The utility model will be further described in connection with the drawings:
[0015] As Figure 1 shown, a lifting plunger for gas well gas production and drainage is composed of a plunger body 1 and a one-way flow channel 2;
[0016] The plunger body 1 is internally provided with a one-way flow channel 2 penetrating from top to bottom, and the one-way flow channel 2 is sequentially provided with a bottom straight flow channel 21, an adjusting cavity 22 and a top limiting plug cavity 23 from bottom to top.
[0017] The flow control ring cavity 3 is internally provided with an adjusting ring plug 6, the top ring surface of the adjusting ring plug 6 is installed with an adjusting column 7, the top end of the adjusting column 7 extends into the adjusting cavity 22 and is installed with a sliding carriage 11, the center of the sliding carriage 11 is provided with a sliding hole, the sliding hole is internally and slidingly provided with a sliding rod 10, the top end of the sliding rod 10 extends into the top limiting plug cavity 23 and is installed with a one-way top plug 8.
[0018] The bottom straight flow channel 21 is internally provided with a negative pressure tank 4 and a high-pressure gas tank 14, the high-pressure gas tank 14 and the negative pressure tank 4 are both connected and installed to the bottom of the flow control ring cavity 3 through an air pressure valve 13, the air pressure in the flow control ring cavity 3 is adjusted through the high-pressure gas tank 14 and the negative pressure tank 4, so as to drive the lifting of the adjusting ring plug 6.
[0019] As Figure 1 shown, the utility model further discloses the following more optimized specific structures:
[0020] The inside of the plunger body 1 is embeddedly installed with a control protection box 5, and the control protection box 5 is installed with a wireless controller and a battery.
[0021] The flow control ring cavity 3 is installed with an air pressure sensor 9.
[0022] The bottom end of the sliding rod 10 is installed with a stop head 12.
[0023] The one-way top plug 8 is a conical plug, and the top limiting plug cavity 23 is a frustum-shaped cavity.
[0024] As shown in the figure, Figure 1 When the lifting plunger for gas well gas production and drainage descends, liquid enters the one-way flow channel 2 from the bottom, and the one-way top plug 8 is pressed open to form a channel, and the liquid enters above the plunger body 1. When the plunger body 1 rises, the one-way top plug 8 enters the top limiting plug cavity 23, so that the one-way flow channel 2 is closed, the liquid is lifted, and as the energy in the gas well decreases, the air pressure valve 13 of the negative pressure tank 4 is opened, the adjusting ring plug 6 descends, the sliding stroke of the sliding rod 10 is shortened, the flow channel between the one-way top plug 8 and the top limiting plug cavity 23 is narrowed, the liquid pressure on the top is reduced, and the lifting weight is adjusted.
[0025] Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.
Claims
1. A lift plunger for gas well gas recovery and water disposal, characterized by: The utility model provides a kind of piston, including plunger body and one-way flow channel, the one-way flow channel is provided in the plunger body and is through from top to bottom, the one-way flow channel is sequentially bottom straight-flow channel, adjusting cavity and top limiting plug cavity from bottom to top, flow control ring cavity is equipped in the plunger body, adjusting ring plug is inserted in the flow control ring cavity, adjusting column is installed on the top ring surface of the adjusting ring plug, the top end of the adjusting column extends into adjusting cavity and is installed with carriage, the center of the carriage is equipped with sliding hole, sliding rod is slidably inserted in the sliding hole, the top end of the sliding rod extends into top limiting plug cavity and is installed with one-way top plug, negative pressure tank and high-pressure gas tank are embedded and installed on the hole wall of the bottom straight-flow channel, the high-pressure gas tank and the negative pressure tank are connected and installed to the bottom of the flow control ring cavity by gas pressure valve.
2. A lift ram for gas well production water separation according to claim 1, characterized in that: The inside of the plunger body is embedded and installed with control protection box, and the control protection box is installed with wireless controller and battery.
3. A lift ram for gas well production water separation according to claim 1, characterized in that: A gas pressure sensor is installed in the flow control ring cavity.
4. The lift ram for gas well production water separation of claim 1, wherein: A stop head is installed at the bottom end of the sliding rod.
5. A lift plug for gas well production water removal according to claim 1, characterized in that: The one-way top plug is a conical plug, and the top limiting plug cavity is a frustum-shaped cavity.