Skid-mounted movable oil production well mouth dosing device

Abstract

The utility model discloses a skid-mounted movable oil producing well mouth dosing device, and relates to the technical field of oil and gas exploitation. The pesticide adding device comprises a base, a pesticide storage box is arranged on the upper side of the base, a water inlet cylinder and a pesticide inlet cylinder are arranged on the upper side of the pesticide storage box, a pesticide adding pipe fitting is arranged on one side of the pesticide storage box, and a pressure relief pipe fitting is arranged between the pesticide storage box and the pesticide adding pipe fitting; a motor is arranged on the upper side of the pesticide storage box, and a stirring roller fixedly connected with the output end of the motor is arranged in the pesticide storage box in a running fit mode. When the button is pressed, the motor can drive the stirring roller to rotate to stir and mix medicaments and water in the medicament storage box, the crushing roller is driven by the start-stop transmission part to rotate to crush solid and granular medicaments in the filter basket into powder, and the powder medicaments are filtered by the filter basket and then fall into the medicament storage box to be stirred and mixed with the water. And the dilution with water is accelerated, so that the efficiency of descaling and paraffin control in the well is improved.

Description

Technical Field

[0001] The utility model belongs to the field of oil and gas production, and in particular relates to a skid-mounted movable wellhead dosing device for oil production wells. Background Art

[0002] Usually, a dosing device is added at the wellhead of the oil well to prevent scaling and wax formation in the wellbore and well facilities.

[0003] The Chinese patent with announcement number CN209603942U discloses a simple wellhead dosing device, including a medicine storage box, a screw pump, a water pumping pipe, and a pressure balance pipe. One end of the water pumping pipe extends into the bottom of the medicine storage box, and the other end is connected to the inlet end of the screw pump, and the outlet end of the screw pump is connected to the wellhead; a pressure relief pipe is provided on the left side of the upper end of the medicine storage box, and an injection pipe is provided on the right side. One end of the pressure balance pipe is connected to the outlet end of the screw pump, and the other end is connected to the pressure relief pipe; an inner sleeve is provided in the medicine storage box, and a gap is left between the inner sleeve and the inner wall of the medicine storage box to form a hollow structure. A heating plate is provided between the inner sleeve and the gap in the center of the bottom of the medicine storage box. A waste liquid tank is provided at the lower end of the medicine storage box, and the waste liquid tank is connected to the medicine storage box through a pipeline. Although the device uses a pressure balancing tube, the casing pressure relief can be completed without removing the device when the wellhead casing is pressure relieved; due to the movable design, it can be moved to different wellheads for adding medicines. However, when the above device is actually used, the medicine enters the medicine storage box and is mixed with water before being transported to the wellhead. The existing descaling and anti-wax medicines are divided into solid, granular, powdered and liquid forms. When the solid and granular medicines are stirred with water, the solid and granular medicines are not easy to melt, so the dilution rate is relatively slow, which affects the work efficiency.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a skid-mounted movable oil wellhead dosing device, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A skid-mounted movable oil wellhead dosing device comprises: a base, a medicine storage box is mounted on the upper side of the base, a water inlet cylinder and a medicine inlet cylinder are arranged on the upper side of the medicine storage box, a dosing pipe is arranged on one side of the medicine storage box, and a pressure relief pipe is arranged between the medicine storage box and the dosing pipe;

[0008] A motor is provided on the upper side of the medicine storage box, and a stirring roller fixedly connected to the output end of the motor is rotatably provided in the medicine storage box. A filter basket corresponding to the medicine inlet cartridge is fixedly connected to the top of the inner wall of the medicine storage box, and a crushing roller located in the filter basket is rotatably provided on the top of the inner wall of the medicine storage box. A start-stop transmission component is provided between the crushing roller and the output end of the motor, and a button cooperating with the start-stop transmission component is provided on the upper side of the medicine storage box.

[0009] Optionally, an inner cavity is provided on the upper side of the medicine storage box, and the start-stop transmission component is located in the inner cavity; the start-stop transmission component includes a first gear that is interference-fitted at the output end of the motor, a telescopic rod that is rotatably fitted in the inner cavity, and a second gear that is interference-fitted around the telescopic rod and meshes with the first gear, and the telescopic rod is rotatably fitted on the lower end surface of the button and is fixedly connected to the crushing roller.

[0010] Optionally, a through groove connected to the inner cavity is opened on the upper side of the medicine storage box, the button is located in the through groove, and a limiting member is provided between the button and the through groove; the limiting member includes two limiting grooves opened in the through groove, a fixing groove opened on one side of the button, a card bead located in the fixing groove and corresponding to the two limiting grooves respectively, and a spring fixedly connected between the card bead and the fixing groove.

[0011] Optionally, universal wheels are provided at the corners of the bottom of the base, and a push handle is fixedly connected to the base.

[0012] Optionally, the dosing pipe fittings include a screw pump arranged on one side of the medicine storage box, a dosing pipe fixedly connected to the water outlet of the screw pump, a connecting pipe head fixedly connected to the end of the dosing pipe, and a main valve arranged on the dosing pipe.

[0013] Optionally, the pressure relief pipe includes a first pressure relief pipe arranged on the dosing pipe, a second pressure relief pipe arranged on the upper side of the medicine storage box, a connecting pipe fixedly connected between the first pressure relief pipe and the second pressure relief pipe, a first valve arranged on the first pressure relief pipe, and a second valve arranged on the second pressure relief pipe.

[0014] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0015] By pressing the button on the start-stop transmission member provided on the upper side of the medicine storage box, the motor can drive the stirring roller to rotate to mix the medicine and water in the medicine storage box. At the same time, the start-stop transmission member drives the crushing roller to rotate to crush the solid and granular medicine in the filter basket into powder. The powdered medicine is filtered through the filter basket and falls into the medicine storage box where the medicine and water are mixed, which speeds up the dilution with water and improves the efficiency of descaling and anti-waxing in the well.

[0016] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] In the picture:

[0019] Figure 1 This is a structural diagram of the wellhead dosing device;

[0020] Figure 2 Schematic diagram of the internal structure of the medicine storage box;

[0021] Figure 3 Schematic diagram of the start-stop transmission structure;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] Base 1, medicine storage box 2, universal wheel 3, push handle 4, dosing pipe fitting 5, dosing pipe 501, screw pump 502, main valve 503, connecting pipe head 504, pressure relief pipe fitting 6, first pressure relief pipe 601, second pressure relief pipe 602, connecting pipe 603, first valve 604, second valve 605, water inlet cylinder 7, medicine inlet cylinder 8, motor 9, button 10, stirring roller 11, filter basket 12, crushing roller 13, inner cavity 14, start-stop transmission part 15, first gear 1501, second gear 1502, telescopic rod 1503, bearing 16, limiter 17, limit groove 1701, fixing groove 1702, spring 1703, and card bead 1704.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] See also Figure 1-4 As shown, in this embodiment, a skid-mounted movable oil wellhead dosing device is provided, comprising: a base 1, a medicine storage box 2 is mounted on the upper side of the base 1, a water inlet cylinder 7 and a medicine inlet cylinder 8 are arranged on the upper side of the medicine storage box 2, a dosing pipe 5 is arranged on one side of the medicine storage box 2, and a pressure relief pipe 6 is arranged between the medicine storage box 2 and the dosing pipe 5;

[0028] A motor 9 is provided on the upper side of the medicine storage box 2, and a stirring roller 11 fixedly connected to the output end of the motor 9 is rotatable inside the medicine storage box 2. A filter basket 12 corresponding to the medicine inlet cartridge 8 is fixedly connected to the top of the inner wall of the medicine storage box 2, and a crushing roller 13 located in the filter basket 12 is rotatable on the top of the inner wall of the medicine storage box 2. A start-stop transmission part 15 is provided between the crushing roller 13 and the output end of the motor 9, and a button 10 cooperating with the start-stop transmission part 15 is provided on the upper side of the medicine storage box 2. Pressing the button 10 can facilitate the control of the start and stop of the crushing roller 13 through the start-stop transmission part 15, and can stop the crushing roller 13 when powdered and liquid medicines are added.

[0029] One aspect of the application of this embodiment is as follows: when it is necessary to perform descaling and paraffin prevention in an oil well, water is first added to the medicine storage box 2 through the water inlet cylinder 7, and then medicine is added to the medicine storage box 2 through the medicine inlet cylinder 8. The solid and granular medicines fall into the filter basket 12, and the motor 9 is started. The motor 9 drives the stirring roller 11 to rotate. At this time, the button 10 is pressed, and the button 10 drives the start-stop transmission member 15 to transmit to the output end of the motor 9 and the crushing roller 13, so that the motor 9 drives the stirring roller 11 to rotate and the start-stop transmission member 15 drives the crushing roller 13 to rotate. The crushing roller 13 rotates to crush the solid and granular medicines in the filter basket 12 into powder. The powdered medicine is filtered through the filter basket 12 and falls into the medicine storage box 2. The medicine and water are mixed and stirred. After mixing, the medicine liquid is transported to the wellhead through the medicine dosing pipe 5 for descaling and paraffin prevention. It should be noted that all electrical equipment involved in this application can be powered by batteries or external power.

[0030] By means of the start-stop transmission member 15 provided on the upper side of the medicine storage box 2, pressing the button 10 can cause the motor 9 to drive the stirring roller 11 to rotate to stir and mix the medicine and water in the medicine storage box 2. At the same time, the start-stop transmission member 15 drives the crushing roller 13 to rotate to crush the solid and granular medicine in the filter basket 12 into powder. The powdered medicine is filtered through the filter basket 12 and falls into the medicine storage box 2 where the medicine and water are stirred and mixed, thereby accelerating the dilution with water, thereby improving the efficiency of descaling and anti-waxing in the well.

[0031] like Figure 3 As shown, an inner cavity 14 is provided on the upper side of the medicine storage box 2 of this embodiment, and a start-stop transmission member 15 is located in the inner cavity 14;

[0032] like Figure 3 As shown, specifically, the specific structure of the start-stop transmission member 15 includes the following: a first gear 1501 that is interference-fitted at the output end of the motor 9, a telescopic rod 1503 that is rotationally fitted in the inner cavity 14, and a second gear 1502 that is interference-fitted around the telescopic rod 1503 and meshes with the first gear 1501. The telescopic rod 1503 is rotationally fitted on the lower end surface of the button 10 and is fixedly connected to the crushing roller 13. The cross-section of the telescopic rod 1503 is rectangular, and a through hole communicating with the inner cavity 14 is provided at the top of the inner wall of the medicine storage box 2. A bearing 16 is fixedly connected in the through hole, and the telescopic rod 1503 is fixedly connected to the inner side of the bearing 16.

[0033] like Figure 3-4 As shown, a through groove connected to the inner cavity 14 is provided on the upper side of the medicine storage box 2 of this embodiment, the button 10 is located in the through groove, and a limiting member 17 is provided between the button 10 and the through groove; the limiting member 17 includes two limiting grooves 1701 provided in the through groove, a fixing groove 1702 provided on one side of the button 10, a card bead 1704 located in the fixing groove 1702 and corresponding to the two limiting grooves 1701 respectively, and a spring 1703 fixedly connected between the card bead 1704 and the fixing groove 1702.

[0034] When it is necessary to crush the solid and granular medicines in the filter basket 12, the button 10 is pressed, and the card bead 1704 is engaged with one of the corresponding limit grooves 1701 by the elastic force of the spring 1703, so that the button 10 can be limited and fixed in the through groove. When the button 10 is pressed, the telescopic rod 1503 is squeezed and retracted. The retraction of the telescopic rod 1503 drives the second gear 1502 to engage with the first gear 1501. At this time, the motor 9 is started. While the motor 9 drives the stirring roller 11 to rotate, it also drives the first gear 1501 to rotate. The rotation of the first gear 1501 drives the second gear 1502 to rotate. The rotation of the second gear 1502 drives the crushing roller 13 to rotate. The crushing roller 13 rotates to crush the solid and granular medicines in the filter basket 12 into powder. The powdered medicine is filtered through the filter basket 12 and falls into the medicine storage box 2. The medicine and water are mixed, which accelerates the dilution with water, thereby improving the efficiency of descaling and anti-wax in the well.

[0035] like Figure 1 As shown, universal wheels 3 are provided at the corners of the bottom of the base 1 of this embodiment, and a push handle 4 is fixedly connected to the base 1. The medicine storage box 2 on the base 1 is pushed by holding the push handle 4. The medicine storage box 2 can be moved through the universal wheels 3 at the bottom of the base 1, so that it is convenient to move it to different wellheads for adding medicines, thereby facilitating sharing by multiple wells without the need to modify the existing wellhead oil production tree.

[0036] like Figure 1As shown, specifically, the specific structure of the dosing pipe 5 includes the following: a screw pump 502 provided on one side of the medicine storage box 2, a dosing pipe 501 fixedly connected to the water outlet of the screw pump 502, a connecting pipe head 504 fixedly connected to the end of the dosing pipe 501, and a main valve 503 provided on the dosing pipe 501;

[0037] Among them, after the connecting pipe head 504 is connected to the wellhead casing, the main valve 503 is opened and the screw pump 502 is started, the medicine liquid in the medicine storage box 2 can be extracted into the dosing pipe 501, and the medicine liquid in the dosing pipe 501 is transported to the wellhead. The medicine liquid can remove scale and prevent wax in the well.

[0038] like Figure 1 As shown, specifically, the specific structure of the pressure relief pipe 6 includes the following: a first pressure relief pipe 601 provided on the dosing pipe 501, a second pressure relief pipe 602 provided on the upper side of the medicine storage box 2, a connecting pipe 603 fixedly connected between the first pressure relief pipe 601 and the second pressure relief pipe 602, a first valve 604 provided on the first pressure relief pipe 601, and a second valve 605 provided on the second pressure relief pipe 602;

[0039] Among them, a pressure gauge is provided on the first pressure relief pipe 601 for monitoring the pressure in the dosing pipe 501 during the dosing process. When the wellhead casing is depressurized, it is only necessary to shut down the screw pump 502, close the second valve 605, and open the second valve 605 to complete the wellhead casing pressure relief, without having to disassemble the pipeline connecting the dosing device and the wellhead, saving time and effort.

[0040] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A skid-mounted movable oil wellhead dosing device, characterized in that: include: A base (1), a medicine storage box (2) is mounted on the upper side of the base (1), a water inlet cylinder (7) and a medicine inlet cylinder (8) are arranged on the upper side of the medicine storage box (2), a medicine dosing pipe (5) is arranged on one side of the medicine storage box (2), and a pressure relief pipe (6) is arranged between the medicine storage box (2) and the medicine dosing pipe (5); A motor (9) is provided on the upper side of the medicine storage box (2), a stirring roller (11) fixedly connected to the output end of the motor (9) is rotatably mounted inside the medicine storage box (2), a filter basket (12) corresponding to the medicine inlet barrel (8) is fixedly connected to the top of the inner wall of the medicine storage box (2), a crushing roller (13) located in the filter basket (12) is rotatably mounted on the top of the inner wall of the medicine storage box (2), a start-stop transmission member (15) is provided between the crushing roller (13) and the output end of the motor (9), and a button (10) matched with the start-stop transmission member (15) is provided on the upper side of the medicine storage box (2).

2. The skid-mounted movable oil wellhead dosing device according to claim 1, characterized in that: An inner cavity (14) is provided on the upper side of the medicine storage box (2), and the start-stop transmission component (15) is located in the inner cavity (14).

3. The skid-mounted movable oil wellhead dosing device according to claim 2, characterized in that: The start-stop transmission member (15) includes a first gear (1501) that is interference-fitted at the output end of the motor (9), a telescopic rod (1503) that is rotationally fitted in the inner cavity (14), and a second gear (1502) that is interference-fitted around the telescopic rod (1503) and meshes with the first gear (1501). The telescopic rod (1503) is rotationally fitted on the lower end surface of the button (10) and is fixedly connected to the crushing roller (13).

4. The skid-mounted movable oil wellhead dosing device according to claim 2, characterized in that: A through slot communicating with the inner cavity (14) is provided on the upper side of the medicine storage box (2); the button (10) is located in the through slot; and a limiting member (17) is provided between the button (10) and the through slot.

5. The skid-mounted movable oil wellhead dosing device according to claim 4, characterized in that: The limiting member (17) comprises two limiting grooves (1701) provided in the through groove, a fixing groove (1702) provided on one side of the button (10), a clamping bead (1704) located in the fixing groove (1702) and corresponding to the two limiting grooves (1701), and a spring (1703) fixedly connected between the clamping bead (1704) and the fixing groove (1702).

6. The skid-mounted movable oil wellhead dosing device according to claim 1, characterized in that: Universal wheels (3) are provided at the corners of the bottom of the base (1), and a push handle (4) is fixedly connected to the base (1).

7. The skid-mounted movable oil wellhead dosing device according to claim 1, characterized in that: The dosing pipe (5) comprises a screw pump (502) arranged on one side of the medicine storage box (2), a dosing pipe (501) fixedly connected to the water outlet of the screw pump (502), a connecting pipe head (504) fixedly connected to the end of the dosing pipe (501), and a main valve (503) arranged on the dosing pipe (501).

8. The skid-mounted movable oil wellhead dosing device according to claim 7, characterized in that: The pressure relief pipe (6) comprises a first pressure relief pipe (601) arranged on the dosing pipe (501), a second pressure relief pipe (602) arranged on the upper side of the medicine storage box (2), a connecting pipe (603) fixedly connected between the first pressure relief pipe (601) and the second pressure relief pipe (602), a first valve (604) arranged on the first pressure relief pipe (601), and a second valve (605) arranged on the second pressure relief pipe (602).

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