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An integrated split plunger with adjustable falling speed
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A one-piece, plunger technology, applied in the field of oil drilling, can solve problems such as ball valves are difficult to salvage, and achieve the effect of cost saving and strong applicability
Active Publication Date: 2022-01-11
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
The problem that the split plunger ball valve is difficult to salvage is solved by designing the ejector rod fixed with the ball valve, and the falling speed of the plunger body is controlled by adding multiple flow windows with controllable flow area, and the plunger can be adjusted according to the production situation of the gas well The falling speed solves the technical problem that the ball valve of the conventional split-type plunger is difficult to salvage, and avoids unnecessary risks of on-site operation. Moreover, when using this type of plunger, no additional modification of the wellhead device is required, and the on-site promotion has strong applicability and can be realized Continuous production without shutting in the plunger gas lift well
Method used
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Embodiment 1
[0050] This embodiment provides an integrated split plunger with adjustable falling speed, including a plunger body 3, a push rod 4 and a ball valve 6, wherein:
[0051] The plunger body 3 is a hollow tube structure;
[0052] The inner and outer diameters of both ends of the plunger body 3 are larger than the middle part;
[0053] Both ends of the plunger body 3 are provided with internal threads on the inner walls;
[0054] The top of the plunger body 3 is provided with an upper end speed regulator 2;
[0055] The bottom of the plunger body 3 is provided with a lower end speed regulator 5;
[0056] The upper end speed regulator 2 is a cylindrical structure, and the lower part of the upper end speed regulator 2 is provided with an external thread matched with the plunger main body 3;
[0057] The upper end speed regulator 2 is provided with a plurality of overcurrent windows;
[0058] The lower end speed regulator 5 is a cylindrical structure, and the upper part of the low...
Embodiment 2
[0079] This embodiment provides an integrated split plunger with adjustable falling speed, including a plunger body 3, a push rod 4 and a ball valve 6, wherein:
[0080] The plunger body 3 is a hollow tube structure;
[0081] The inner and outer diameters of both ends of the plunger body 3 are larger than the middle part;
[0082] Both ends of the plunger body 3 are provided with internal threads on the inner walls;
[0083] The top of the plunger body 3 is provided with an upper end speed regulator 2;
[0084] The bottom of the plunger body 3 is provided with a lower end speed regulator 5;
[0085] The upper end speed regulator 2 is a cylindrical structure, and the lower part of the upper end speed regulator 2 is provided with an external thread matched with the plunger main body 3;
[0086] The upper end speed regulator 2 is provided with four overcurrent windows;
[0087] The lower end speed regulator 5 is a cylindrical structure, and the upper part of the lower end spe...
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Abstract
The invention provides an integrated split plunger with adjustable falling speed and relates to the technical field of petroleum drilling. The one-piece split plunger with adjustable falling speed includes a plunger main body (3), a push rod (4) and a ball valve (6). The inner walls of both ends of the plunger main body (3) are provided with internal threads. The top is provided with an upper end speed regulator (2), and the bottom is provided with a lower end speed regulator (5); the bottom of the lower end speed regulator (5) is provided with a ball valve transition chamber (7); the ejector rod (4) It is arranged inside the plunger main body (3), with a fishing head (1) on the top and a ball valve (6) fixed on the lower part. The invention solves the technical problem that the ball valve of the conventional split-type plunger is difficult to salvage, avoids unnecessary on-site operation risks, and does not require additional modification of wellhead devices when using this type of plunger, and has strong applicability for on-site promotion, and can realize column Plug gas lift wells for continuous production without shutting in wells.
Description
technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to an integrated split plunger with adjustable falling speed. Background technique [0002] In actual production, gas wells in the middle and late stages of production often have fluid accumulation problems, and bottomhole fluid accumulation will reduce the productivity of gas wells, and even "squeeze" gas wells to stop production. Currently commonly used gas well drainage methods include gas injection gas lift, foam drainage and plunger gas lift, etc., and plunger gas lift has the characteristics of low cost, simple process operation, and less dependence on wellhead devices. It is widely used in on-site production. At present, the commonly used plungers mainly include: rod plungers, liner plungers, brush plungers and split plungers, etc. Although these plungers have been designed for different gas well types, they exist together. The shortcoming is that it cannot activ...
Claims
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Application Information
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