CN204827379U - Three-element production well water mixing and casing dosing device - Google Patents

Abstract

The utility model relates to a water-mixing and casing-pipe drug-dosing device for a ternary production well. It mainly solves the problems of inaccurate flow control of the existing wellhead water mixing and chemical dosing process, and inaccurate water content testing due to lax closing of water mixing valves. It is characterized in that: the water mixing pipeline (6) is connected with a filter (2), and the filter (2) is provided with two outlets, one outlet is connected to the sleeve (7) through the sleeve piston valve (1). The other outlet is connected to the wellhead sampling device (3) through a high-pressure rubber hose (5). The three-element production well water mixing and casing dosing device solves the blockage of the concentrated dosing process caused by the poor water quality of the current centralized dosing device, and the water mixing valve is not closed tightly when sampling at the wellhead, which affects the water content of the sample. It shortens the sampling time of oil production workers, reduces labor intensity and improves work efficiency.

Description

Three-element production well water mixing and casing dosing device

technical field

The utility model relates to the field of oil fields, in particular to a three-element production well water mixing and casing dosing device.

Background technique

The ASP flooding technology is an important means to further enhance the oil recovery in the late stage of high water cut in the oilfield, and it has entered the stage of comprehensive promotion at present. However, with the prolongation of the development time of strong alkali ASP flooding, the scale in the production well is serious, which affects the normal production of the oil well. It is necessary to add anti-scaling agent to the wellhead and bottom hole casing to reduce the scaling speed. At present, there are two methods of dosing: single well and centralized dosing. Centralized dosing is more suitable for large industrialized areas. However, due to the poor water quality of the current Sanyuan well, the application of centralized dosing technology is prone to the following problems : 1. Inaccurate dosing flow control; 2. The dosing process and water nozzles are often blocked, causing the pipeline to freeze; 3. It is difficult to clean the flow controller and replace the water nozzle; 4. The flow metering valve is frozen and cannot be opened, resulting in difficulty in flow measurement And other issues.

At the same time, there are problems in the wellhead water mixing process and wellhead sampling: 1. Because the water mixing valve is not closed tightly, it affects the inaccurate testing of the water content of the sample; 2. During the production control process of water mixing, it is easy to be blocked by impurities and affect production; 3. The original sampling The device can only take samples from local points, which is not representative; 4. There is no heat tracing between the production valve at the wellhead and the water mixing pipe. Waste of crude oil, environmental pollution and other problems often appear in the oil well management process.

Contents of the invention

In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a ternary production well water mixing and casing dosing device, which solves the problem of the current centralized dosing device The blockage of the concentrated dosing process caused by poor water quality, and the inaccurate test of water content in the sample due to the lax closure of the water mixing valve during wellhead sampling shortened the sampling time of oil extraction workers, reduced labor intensity, and improved work efficiency. .

The technical scheme of the utility model is: a three-element production well water mixing and casing dosing device, including a water mixing pipeline and a high-pressure rubber hose, a filter is connected to the water mixing pipeline, and two outlets are arranged on the filter , one outlet is connected to the casing piston valve through a high-pressure rubber hose, and the other end of the casing piston valve is connected to the casing, and the other outlet is connected to the wellhead sampling device through a high-pressure rubber hose;

The filter includes a filter jacket, the filter jacket is T-shaped, and there are three inlets and outlets on the T-shape, wherein the bottom of the T-shape is connected with a settling plug, and the outlets at both ends of the upper part are respectively connected with filter plugs, and T There is a coarse filter on the inner side of the lower part of the shape, a fine filter is fixed on the inner side of the upper part, and a faucet connector is installed inside the fine filter. ; The inlet at the lower pipe wall of the filter jacket is connected with the water mixing pipeline;

The sampling device includes a wellhead plug, the left end of the wellhead plug is equipped with a quick sampling joint, the right end is connected to the liquid collector fixing part, and the wellhead plug is equipped with a straight-through piston valve, the left end of the straight-through piston valve is in contact with the quick sampling joint, and the right end A return spring B is connected, and the right end of the return spring B pushes against the liquid collector fixture.

The sleeve piston valve includes a valve body and a base, the right end of the valve body is connected with the base, the valve body is provided with a piston valve, the right end of the piston valve is connected with a return spring A, and the right end of the return spring A is fixed on the base, the piston valve The left end is connected with a quick sampling connector.

The utility model has the following beneficial effects: due to the adoption of the above scheme, the device is mainly used in the centralized dosing of wellhead casings in oil wells in the ternary demonstration area, and solves the blockage of the centralized dosing process caused by the poor water quality of the current centralized dosing device. And when the wellhead sampling is not strictly closed due to the water mixing valve, it affects the inaccurate testing of water content in the sample; shortens the sampling time of oil extraction workers, reduces labor intensity, and improves work efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of casing piston valve;

Fig. 3 is the structural representation of filter mixed with water;

Fig. 4 is a schematic diagram of the structure of the sampling device.

In the figure 1-casing piston valve, 2-filter, 3-sampling device, 4-quick sampling connector, 5-high pressure rubber hose, 6-water mixing pipeline, 7-casing, 8-oil return pipeline, 11-quick Joint, 12-valve body, 13-piston valve, 14-base, 15-return spring A, 21-filter plug, 22-faucet fixed joint, 23-faucet, 24-fine filter, 25-water Mouth connector, 26-filter jacket, 27-coarse filter, 28-sedimentation plug, 32-wellhead plug, 33-straight-through piston valve, 34-return spring B, 35-liquid collector fixing piece, 36- Liquid collector.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 4, a ternary production well water mixing and casing dosing device includes a water mixing pipeline 6 and a high-pressure rubber hose 5, and the water mixing pipeline 6 is connected with a filter 2, a filter 2 There are two outlets on the top, one outlet is connected to the sleeve piston valve 1 through the high-pressure rubber hose, and the other end of the sleeve piston valve 1 is connected to the sleeve 7, and the other outlet is connected to the high-pressure rubber hose 5, and the other end of the high-pressure rubber hose 5 passes through The quick connector 4 is connected to the wellhead sampling device 3 , and the other end of the wellhead sampling device 3 is connected to the oil return pipeline 8 .

The casing piston valve 1 includes a valve body 12 and a base 14, the right end of the valve body 12 is connected with the base 14, and a sealing ring is placed between the two, the valve body 12 is provided with a piston valve 13, and the center of the piston valve 13 is A liquid flow channel is provided along the axial direction, and a liquid passage hole perpendicular to the right end of the liquid flow channel is provided. The right end of the piston valve 13 is connected with a return spring 15 , and the right end of the return spring 15 is fixed on the base 14 , and the left end of the piston valve 13 is connected with a quick sampling connector 11 . When the casing piston valve 1 is connected to the casing 7 through the quick sampling joint 11, the quick sampling joint pushes the piston valve 13 to the right, opens the liquid flow channel, and makes the casing piston valve 1 communicate with each other.

The filter 2 includes a filter jacket 26. The filter jacket 26 is T-shaped as a whole. The two ends of the upper part of the T-shape and the bottom side wall are respectively provided with inlets and outlets. The bottom side wall is an inlet, which is connected to the water mixing pipeline 6. As an outlet, filter plugs 21 are respectively connected to the outlets at both ends of the upper part, and meanwhile, a settlement plug 28 is also connected to the T-shaped bottom. The inner side of the T-shaped bottom of the filter coat 26 is provided with a coarse filter screen 27, and the water in the water-mixing pipeline 6 enters the filter thus, and the inner side of the T-shaped upper part is fixed with a fine filter screen 24, and the liquid filtered through the coarse filter screen 27 Then filter through a fine filter. A faucet connector 25 is provided inside the fine filter 24 , and faucets 23 are respectively connected to two ends of the faucet connector 25 , and a faucet fixing joint 22 is connected to the faucet 23 . The filtered liquid is delivered to both ends through the water nozzle 23 by the fine filter screen 24 . When the filter 2 is in use, the settling plug 28 and the filter plug 21 are removed, the bottom side wall inlet is connected to the water mixing pipeline 6, the outlets at both ends of the upper part are respectively connected to the high-pressure rubber hose 5, and the high-pressure rubber hose 5 at one end passes through The bushing piston valve 1 is connected to the bushing 7 , and the high-pressure rubber hose 5 at the other end is connected to the sampling device 3 through the quick sampling connector 4 .

The sampling device 3 includes a wellhead plug 32 , and a quick sampling connector 4 is built inside the left end of the wellhead plug 32 , and is connected to the high-pressure rubber hose 5 through the quick sampling connector 4 . The right end of the wellhead plug 32 is connected with a liquid collector fixing part 35, and a trumpet-shaped liquid collector 36 is fixed on the liquid collecting device fixing part 35. The inside of the wellhead plug 32 is provided with a straight-through piston valve 33, and the center of the straight-through piston valve 33 is axially provided with a liquid flow channel, and its right end is provided with a liquid passage hole perpendicular to the liquid flow channel, and the left end of the straight-through piston valve 33 is connected to the fast sampling valve. The joint 34 contacts, and the right end is connected with a return spring 34 , and the right end of the return spring 34 bears on the liquid collector fixing member 35 .

When mixing water and casing dosing, the water from the water mixing pipeline 6 passes through the two-layer filtration of the coarse filter 27 and the fine filter 24 of the water mixing filter 2, and then is divided into two parts, one part passes through the casing piston valve 1 is injected into the casing 7 for dosing, and the other part flows into the oil return pipeline 8 through the sampling device 3 for water mixing, wherein the amount of water mixing is adjusted by the water nozzle 23 in the water mixing filter 2. When sampling is required, close the valve at the plug on the right side of the filter, remove the quick joint 4 connected to the wellhead sampling device 3, and connect the quick sampling joint for sampling; when measuring the flow rate, the flow meter passes through the left high-pressure hose and casing piston valve 1 is connected in series with the process, and can be connected with the casing piston valve 1 with the quick pressure gauge joint to measure the oil and casing pressure.

Claims (2)

1. ternary extraction well water mixing, casing medicament adding device, comprise water mixing pipeline (6), high-pressure rubber pipe (5), it is characterized in that: described water mixing pipeline (6) is connected with strainer (2), strainer (2) is provided with two outlets, an outlet is connected with sleeve piston valve (1) by high-pressure rubber pipe, and the other end of sleeve piston valve (1) is connected on sleeve pipe (7), another outlet connects well head sampling apparatus (3) by high-pressure rubber pipe (5);

Described strainer (2) comprises strainer overcoat (26), strainer overcoat (26) is T-shaped, T-shaped has three import and export, wherein be connected with sedimentation plug (28) bottom T-shaped, both upper ends thereof exit is connected to strainer plug (21), and the lower inside of T-shaped is provided with coarse filtration net (27), upper inner is fixed with smart screen pack (24), essence screen pack (24) inside is equipped with tap connector (25), tap connector (25) two ends are connected to water nozzle (23), water nozzle (23) are connected with water nozzle anchor tip (22); The bottom tube wall place import of described strainer overcoat (26) is connected with water mixing pipeline (6);

Described sampler (3) comprises well head plug (32), the left end inside of well head plug (32) is equipped with fast sampling joint (4), right-hand member connects liquid trap fixture (35), well head plug (32) inside is equipped with straight through piston valve (33), straight through piston valve (33) left end contacts with fast sampling joint (34), right-hand member is connected with back-moving spring B(34), back-moving spring B(34) right-hand member withstand on liquid trap fixture 35.

2. ternary extraction well according to claim 1 water mixing, casing medicament adding device, it is characterized in that: described sleeve piston valve (1) comprises valve body (12), base (14), valve body (12) right-hand member is connected with base (14), valve body (12) inside is provided with piston valve (13), piston valve (13) right-hand member is connected with back-moving spring A(15), and back-moving spring A(15) right-hand member is fixed on base (14), described piston valve (13) left end is connected with fast sampling joint (11).