On-site liquid preparation device for barite blockage removal of oil well

Abstract

The utility model provides an oil well barite unblocking site liquid preparation device which comprises an air blowing pump, an air pumping pipeline and a feeding cylinder, one end of the air pumping pipeline is provided with a transportation tank connector, the other end of the air pumping pipeline is communicated with an air outlet of the air blowing pump, and the transportation tank connector is used for being connected with a liquid inlet and / or a liquid outlet of a transportation tank; the feeding cylinder comprises a splash-proof cylinder body, a manhole opening flange and a manhole plug which are sequentially communicated from top to bottom, a plurality of feeding windows are formed in the cylinder wall of the splash-proof cylinder body, and a turnover type feeding mechanism is mounted in each feeding window. The on-site liquid preparation device for barite blockage removal of the oil well has the advantages of scientific design, no need of arranging a stirring pool on site, simplicity in operation and no risk of hurting people.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well exploitation, in particular to an on-site liquid dispensing device for removing barite blockage in oil wells. Background Art

[0002] Barite is a common solid phase weighting material in drilling fluid. When drilling in ultra-deep, ultra-high pressure, low porosity and low permeability fractured sandstone reservoirs, the barite weighting material in the drilling fluid may leak and block natural fractures, resulting in obstruction of oil flow channels and reduced oil well production. Barite is a non-metallic mineral product with barium sulfate as its main component. It has stable chemical properties and is insoluble in acid. Existing acidizing technology is difficult to effectively solve its blockage problem.

[0003] Patent application number 201310722290.6 discloses a working fluid for removing barite blockage in oil and gas wells, which is prepared from six chemical raw materials, including nitrilotriacetic acid, 4-methylbenzenesulfonic acid pyridine, 2-butyric acid sodium salt, etc. In order to prevent the working fluid from becoming ineffective due to long-term storage, the existing preparation method generally uses tank trucks and transport vehicles to transport water and chemical raw materials to the work site, sets up a stirring pool on site, manually weighs various raw materials, puts them into the pool together with water, and then manually stirs them evenly; this preparation method is not only cumbersome to operate, but also during the preparation process, the working fluid may splash onto the skin and eyes of the staff, posing a risk of injury.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The utility model aims to address the deficiencies of the prior art and thus provide an on-site liquid dispensing device for oil well barite blockage relief, which has a scientific design, does not require a stirring tank to be set up on site, is simple to operate, and has no risk of injury to personnel.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a liquid dispensing device on-site for unblocking barite in oil wells, comprising an air pump, an air pumping pipe and a feeding barrel, one end of the air pumping pipe is provided with a transport tank joint, and the other end is connected to the air outlet of the air pump, and the transport tank joint is used to connect the liquid inlet and / or liquid outlet of the transport tank; the feeding barrel comprises a splash-proof cylinder body, a manhole mouth rib and a manhole plug which are sequentially connected from top to bottom, and a plurality of feeding windows are opened on the cylinder wall of the splash-proof cylinder body, and a flip feeding mechanism is installed in each of the feeding windows.

[0007] Based on the above, the flip-type feeding mechanism includes a back plate and a transparent measuring cup arranged on the outside of the back plate, the upper and middle part of the back plate is hinged to the two side walls of the feeding window, the bottom end of the back plate is placed on the outside of the bottom edge of the feeding window, and the transparent measuring cup is provided with weight scale lines.

[0008] Based on the above, a gap-blocking plastic film is arranged at the edge of the feeding window, and the gap-blocking plastic film is used to block the gap between the feeding window and the back plate.

[0009] Based on the above, an air intake one-way valve is provided on the air pumping pipeline.

[0010] Based on the above, there are a total of six flip-type feeding mechanisms.

[0011] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0012] (1) The manhole rib and the manhole plug are arranged so that the feeding barrel can be inserted into the manhole on the top of the transport tank. The splash-proof cylinder body can, on the one hand, feed various chemical raw materials into the transport tank through the flip-type feeding mechanism in the multiple feeding windows. On the other hand, it has a certain height, which can prevent the working fluid from splashing out during the process of the pumping pipe pumping air into the transport tank and the liquid in the tank tumbling and mixing, thereby avoiding injuries. Moreover, the mixing can be carried out directly in the transport tank, without the need to set up a stirring tank on site.

[0013] (2) The transparent measuring cup can be set with corresponding weight scale lines according to the density of different chemical raw materials, and the weight of each solid chemical raw material can be weighed by volume, which saves the step of on-site weighing and makes feeding more convenient.

[0014] (3) In the non-feeding state, the back plate naturally droops and blocks the feeding window, and the gap-blocking plastic film blocks the gap between the feeding window and the back plate to prevent the working liquid from splashing out of the feeding window.

[0015] (4) The provision of the air intake check valve can prevent the liquid in the transport tank from flowing back when the tank is inflated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of the on-site liquid dispensing device for removing barite plugging in oil wells when in use.

[0017] Figure 2 It is a side view of the feeding barrel in the utility model.

[0018] Figure 3 It is a top view of the feeding barrel in the utility model.

[0019] In the figure: 1. Air pump; 2. Air pump pipe; 3. Transport tank joint; 4. Air inlet check valve; 5. Transport tank; 6. Liquid inlet; 7. Liquid outlet; 8. Splash-proof cylinder; 9. Manhole rib; 10. Manhole plug; 11. Feeding window; 12. Manhole; 13. Back plate; 14. Transparent measuring cup; 15. Seam-blocking plastic film. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0021] like Figure 1-3 As shown, an on-site liquid dispensing device for unblocking barite in oil wells comprises an air pump 1, an air pumping pipe 2 and a feeding tube, one end of the air pumping pipe 2 is provided with a transport tank joint 3, and the other end is connected to the air outlet of the air pump 1, the transport tank joint 3 is used to connect the liquid inlet 6 and / or liquid outlet 7 of the transport tank 5, the air pump 1 pumps air into the transport tank 5 through the air pumping pipe 2 to make the liquid in the tank tumble and mix the working fluid; to prevent the liquid in the transport tank 5 from flowing back, an air inlet check valve 4 is provided on the air pumping pipe 2.

[0022] The feeding cylinder includes a splash-proof cylinder body 8, a manhole rib 9 and a manhole plug 10 which are sequentially connected from top to bottom. Six feeding windows 11 (corresponding to 6 kinds of chemical raw materials) are opened on the cylinder wall of the splash-proof cylinder body 8. A flip feeding mechanism is installed in each of the feeding windows 11. The manhole plug 10 is used to be inserted into the manhole 12 on the top of the transport tank 5, and the manhole rib 9 is used to be pressed on the top edge of the manhole 12 to achieve fixation.

[0023] The flip feeding mechanism specifically includes a back plate 13 and a transparent measuring cup 14 arranged on the outside of the back plate 13. The upper and middle parts of the back plate 13 are hinged to the two side walls of the feeding window 11, so that the center of gravity is lowered. In a natural state, the back plate 13 can be blocked in the feeding window 11, and the bottom end of the back plate 13 is placed on the outside of the bottom edge of the feeding window 11. The transparent measuring cup 14 is provided with weight scale lines, which can be set according to the density of different chemical raw materials. The volume is used to weigh the weight of each solid chemical raw material, eliminating the step of on-site weighing.

[0024] A gap-blocking plastic film 15 is provided at the edge of the feeding window 11 , and the gap-blocking plastic film 15 is used to block the gap between the feeding window 11 and the back plate 13 to prevent the working liquid from splashing out of the feeding window 11 when rolling.

[0025] Working principle:

[0026] First, connect the transport tank joint 3 with the liquid inlet 6 or the liquid outlet 7 on the transport tank 5, or connect them at the same time, and insert the manhole plug 10 of the feeding cylinder into the manhole 12 to complete the fixation; then, calculate the weight of the six chemical raw materials according to the amount of water in the transport tank 5, and measure the weight of the chemical raw materials in the six transparent measuring cups 14; then, flip the back plate 13 into the cylinder, and put the raw materials in the transparent measuring cups 14 into the transport tank 5; finally, turn on the air pump 1, pump air into the transport tank 5, and the liquid in the tank rolls until the liquid is mixed. At the same time, the splash-proof cylinder 8 has a certain height, and the back plate 13 and the seam-blocking plastic film 15 block the feeding window 11 to prevent the working liquid from splashing out and avoid injury.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. An on-site liquid preparation device for oil well barite plugging removal, characterized in that: It includes an air pump, an air pumping pipe and a feeding barrel, one end of the air pumping pipe is provided with a transport tank joint, and the other end is connected to the air outlet of the air pump, and the transport tank joint is used to connect the liquid inlet and / or liquid outlet of the transport tank; the feeding barrel includes a splash-proof cylinder body, a manhole mouth rib and a manhole plug which pass through from top to bottom in sequence, and a plurality of feeding windows are opened on the cylinder wall of the splash-proof cylinder body, and a flip feeding mechanism is installed in each of the feeding windows.

2. The on-site liquid preparation device for removing barite plugging in oil wells according to claim 1, characterized in that: The flip feeding mechanism includes a back plate and a transparent measuring cup arranged on the outside of the back plate, the upper middle part of the back plate is hinged to the two side walls of the feeding window, the bottom end of the back plate is placed on the outside of the bottom edge of the feeding window, and the transparent measuring cup is provided with weight scale lines.

3. The on-site liquid preparation device for removing barite plugging in oil wells according to claim 2, characterized in that: A gap-blocking plastic film is arranged at the edge of the feeding window, and the gap-blocking plastic film is used to block the gap between the feeding window and the back plate.

4. The on-site liquid preparation device for removing barite plugging in oil wells according to any one of claims 1 to 3, characterized in that: An air intake one-way valve is arranged on the air pumping pipeline.

5. The on-site liquid preparation device for removing barite plugging in oil wells according to claim 4, characterized in that: There are six flip-type feeding mechanisms in total.

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