High-pressure oil-displacing agent injection device for ultra-low permeability oil field

Abstract

The high-pressure oil displacement agent injection device comprises a placing plate, an oil suction pump, a pressure pump, an oil tank, a pressure gauge, a pressure gauge and a pressure release valve, an oil storage barrel is fixedly connected to the bottom of the placing plate, an oil injection pipe is fixedly connected to the bottom of the oil storage barrel, and a supporting plate is fixedly connected to the outer side wall of the oil storage barrel; four adjustable supporting legs are uniformly arranged on the supporting plate along the circumference; each adjustable supporting leg comprises a sleeve, a lead screw in threaded connection with the sleeve, an adjusting bolt fixedly connected to the lower end of the lead screw, a supporting rod fixedly connected to the lower end of the adjusting bolt and a supporting foot in ball connection with the lower end of the supporting rod. And a horizontal detection mechanism is arranged between the adjustable supporting legs IV. The injection device is simple in structure, low in manufacturing cost, high in bearing capacity and not prone to being damaged, the supporting feet can be adjusted in a self-adaptive mode when making contact with an oil field supporting face, better supporting can be achieved, in addition, a horizontal detection mechanism is arranged, it can be guaranteed that the containing plate is in a horizontal state, and therefore the overall stability of the injection device is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil displacement agent injection device technical field, specifically point to a kind of super low permeability oilfield high-pressure oil displacement agent injection device. BACKGROUND

[0002] Oil field widely uses chemical reagent as hydrate inhibitor, which is injected into oil well through injection device to remove hydrate and avoid ice blockage. The existing chemical reagent injection device applied in oil field has slow injection speed, which affects efficiency. The application file with patent number 2020225086996 discloses a super low permeability oilfield high-pressure oil displacement agent injection device. The oil displacement agent is sucked into the oil tank through the connection pipe by the oil pump, and the pressure pump delivers the oil displacement agent to the inside of the oil storage barrel through the oil outlet pipe. At this time, the oil displacement agent is injected into the oil field through the oil injection pipe under the huge pressure of the pressure device, which greatly improves the oil injection speed. The support plate and the adjusting assembly are provided to place the injection device body, so that the four support rods can contact the oil field support surface to support the injection device body. The adjusting assembly adjusts the round rod, so that the bottom end of the support rod can contact the oil field support surface, avoiding the uneven oil field support surface that causes the support rod or round rod not to contact the oil field support surface at the same time, which affects the stability of the injection device body and does not damage the air outlet pipe of the pressure relief valve. However, the adjusting assembly structure is complex, the cost is high, the bearing capacity is not strong, and the round rod bottom and the oil field support surface have small contact area and unstable support. In addition, although the adjusting assembly can be adjusted to avoid the problem that the uneven oil field support surface causes the support rod or round rod not to contact the oil field support surface at the same time, the placement plate may not be in a horizontal state during adjustment, which affects the stability of the injection device as a whole. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a super low permeability oilfield high-pressure oil displacement agent injection device. To solve the above-mentioned technical problem, the utility model provides a technical solution of a super low permeability oilfield high-pressure oil displacement agent injection device: a placement plate is provided, and an oil pump, a pressure pump, an oil tank, a pressure device, a pressure gauge and a pressure relief valve are installed on the top of the placement plate. The bottom of the placement plate is fixedly connected with an oil storage barrel, the bottom of the oil storage barrel is fixedly connected with an oil injection pipe, the outer wall of the oil storage barrel is fixedly connected with a support plate, and four adjustable support legs are evenly arranged along the circumference of the support plate.

[0004] The adjustable support leg comprises a sleeve, a screw rod threadedly connected with the sleeve, an adjusting bolt fixedly connected with the lower end of the screw rod, a support rod fixedly connected with the lower end of the adjusting bolt, and a support foot ball-jointed with the lower end of the support rod, the upper end of the sleeve is fixedly connected with the support plate, the inner wall of the sleeve is provided with an internal thread, and the screw rod is threadedly connected with the sleeve through the internal thread;

[0005] Four adjustable support legs are adjustable support leg one, adjustable support leg two, adjustable support leg three and adjustable support leg four, and a horizontal detection mechanism is arranged between the adjustable support leg one and the adjustable support leg two, between the adjustable support leg two and the adjustable support leg three, and between the adjustable support leg three and the adjustable support leg four.

[0006] Further, the water outlet of the oil suction pump is connected with the oil inlet of the oil tank through a connecting pipe, the pressure pump is connected with the oil tank, the oil outlet of the oil tank is communicated with the oil storage barrel through a connecting pipe, the pressure device is connected with the oil storage barrel, the pressure gauge is connected with the oil storage barrel, and the pressure relief valve is communicated with the upper portion of the oil storage barrel through a connecting pipe.

[0007] Further, the horizontal detection mechanism comprises a horizontal rod and a level gauge arranged at the middle portion of the horizontal rod, and the two ends of the horizontal rod are fixedly connected with the sleeves of the corresponding adjustable support legs.

[0008] Further, the lower end of the support foot is fixedly provided with an antiskid pad, so that the support stability is improved.

[0009] Further, a flowmeter is arranged on the connecting pipe between the water outlet of the oil suction pump and the oil inlet of the oil tank, so that the injection amount of the oil displacement agent can be known.

[0010] Compared with the prior art, the adjustable support leg of the utility model adopts the form of sleeve, screw rod, support foot and adjusting bolt, has simple structure, low cost, strong bearing capacity and is not easy to be damaged, the screw rod is ball-jointed with the support foot, can rotate when the adjusting bolt is screwed, the support foot and the oil field support surface are in contact and can be self-adaptively adjusted, better support can be realized, and the horizontal detection mechanism is arranged, so that the placing plate can be kept in horizontal state and the stability of the whole injection device can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural diagram of the utility model of an ultra-low permeability oil field high-pressure oil displacement agent injection device Figure 1 .

[0012] Figure 2 is a structural diagram of the utility model of an ultra-low permeability oil field high-pressure oil displacement agent injection device Figure 2 .

[0013] As shown in the drawings:

[0014] 1, placement plate, 2, oil pump, 3, pressure pump, 4, oil tank, 5, pressure device, 6, pressure gauge, 7, pressure relief valve, 8, oil storage barrel, 9, oil injection pipe, 10, support plate, 11, sleeve, 12, screw rod, 13, adjusting bolt, 14, support rod, 15, support foot, 16, horizontal rod, 17, level, 18, non-slip mat, 19, flow meter. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Embodiment 1, in combination with the drawings Figures 1-2 A kind of high-pressure oil displacement agent injection device for ultra-low permeability oil field, including placement plate 1, the top of the placement plate 1 is equipped with oil pump 2, pressure pump 3, oil tank 4, pressure device 5, pressure gauge 6 and pressure relief valve 7, the bottom of the placement plate 1 is fixedly connected with oil storage barrel 8, the bottom of the oil storage barrel 8 is fixedly connected with oil injection pipe 9, the outer side wall of the oil storage barrel 8 is fixedly connected with support plate 10, four adjustable support legs are evenly provided on the support plate 10 along circumference;

[0017] The adjustable support leg includes sleeve 11, screw rod 12 threadedly connected with sleeve 11, adjusting bolt 13 fixedly connected with the lower end of screw rod 12, support rod 14 fixedly connected with the lower end of adjusting bolt 13, and support foot 15 ball-jointed with the lower end of support rod 14, the upper end of sleeve 11 is fixedly connected with support plate 10, the inner wall of sleeve 11 is provided with internal thread, and screw rod 12 is threadedly connected with sleeve 11 by the internal thread.

[0018] Four adjustable support legs are adjustable support leg one, adjustable support leg two, adjustable support leg three and adjustable support leg four respectively, and horizontal detection mechanism is arranged between adjustable support leg one and adjustable support leg two, between adjustable support leg two and adjustable support leg three, and between adjustable support leg three and adjustable support leg four.

[0019] The water outlet of the oil pump 2 is connected with the oil inlet of the oil tank 4 by a connecting pipe, the pressure pump 3 is connected with the oil tank 4, the oil outlet of the oil tank 4 is communicated with the oil storage barrel 8 by a connecting pipe, the pressure device 5 is connected with the oil storage barrel 8, the pressure gauge 6 is connected with the oil storage barrel 8, and the pressure relief valve 7 is communicated with the upper part of the oil storage barrel 8 by a connecting pipe.

[0020] When the injection device is placed, the injection device is placed in a designated position, the length of the screw rod 12 extending out of the sleeve 11 is adjusted by turning the adjusting bolt 13 with a wrench, the supporting feet 15 of the four adjustable supporting legs are in contact with the oil field supporting surface, the stable support of the injection device body is realized, and meanwhile, whether the placing plate 1 is in a horizontal state after the length of the adjustable supporting leg is adjusted can be quickly judged according to the horizontal detection mechanism, so that the stability of the injection device as a whole is avoided from being affected due to the placing plate not being in a horizontal state.

[0021] When working, the oil suction pump 2 sucks the oil displacement agent, then the oil displacement agent enters into the oil tank 4 through the connecting pipe, the pressure pump 3 sends the oil displacement agent to the inside of the oil storage barrel 8 through the oil outlet pipe, at this time, the oil displacement agent is injected into the oil field through the oil injection pipe 9 under the high pressure of the pressure device 5, the staff understands the pressure in the oil storage barrel 8 through the pressure gauge 6, and when the pressure in the oil storage barrel 8 is too large, the pressure in the oil storage barrel 8 is released through the pressure relief valve 7.

[0022] The horizontal detection mechanism comprises a horizontal rod 16, a level meter 17 arranged at the middle part of the horizontal rod 16 and fixedly connected with the sleeve 11 of the corresponding adjustable supporting leg at both ends of the horizontal rod 16, and whether the placing plate 1 is in a horizontal state can be judged through the multiple level meters 17, and which adjustable supporting leg should be adjusted can be quickly judged according to each level meter 17.

[0023] The supporting feet 15 are fixedly provided with anti-skid pads 18 at the lower ends, so that the supporting stability is improved.

[0024] A flow meter 19 is arranged on the connecting pipe between the water outlet of the oil suction pump 2 and the oil inlet of the oil tank 4, so that the injection amount of the oil displacement agent can be understood.

[0025] In the description of the embodiments of the utility model, it should be explained that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the utility model product is used, only for the convenience of describing the utility model and simplifying the description, and it does not indicate or imply that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, it does not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the embodiments of the present application, "a plurality of" represents at least 2.

[0028] In the description of the embodiments of the present application, it also needs to be explained that, unless explicitly specified and limited, if the terms "set", "install", "connect", "connect" appear, they should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The above describes the present application and its embodiments, which is not restrictive, and the shown in the drawings is only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if the ordinary skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments of the technical scheme, which should belong to the protection scope of the present application.

Claims

1. A high-pressure oil displacement agent injection device for ultra-low permeability oilfields, comprising a placement plate (1), wherein an oil suction pump (2), a pressure pump (3), an oil tank (4), a pressure device (5), a pressure gauge (6), and a pressure relief valve (7) are installed on the top of the placement plate (1), an oil storage tank (8) is fixedly connected to the bottom of the placement plate (1), an oil injection pipe (9) is fixedly connected to the bottom of the oil storage tank (8), and a support plate (10) is fixedly connected to the outer wall of the oil storage tank (8), characterized in that: The support plate (10) is uniformly provided with four adjustable support legs along the circumference; The adjustable support leg comprises a sleeve (11), a screw rod (12) threadedly connected with the sleeve (11), an adjusting bolt (13) fixedly connected with the lower end of the screw rod (12), a support rod (14) fixedly connected with the lower end of the adjusting bolt (13), and a support foot (15) spherically connected with the lower end of the support rod (14), the upper end of the sleeve (11) is fixedly connected with the support plate (10), the inner wall of the sleeve (11) is provided with an internal thread, and the screw rod (12) is threadedly connected with the sleeve (11) through the internal thread; The four adjustable support legs are adjustable support leg one, adjustable support leg two, adjustable support leg three and adjustable support leg four, respectively, and a horizontal detection mechanism is arranged between the adjustable support leg one and the adjustable support leg two, between the adjustable support leg two and the adjustable support leg three, and between the adjustable support leg three and the adjustable support leg four.

2. The device for injecting a high-pressure oil displacement agent into an ultra-low permeability oil field according to claim 1, characterized in that: The water outlet of the oil suction pump (2) is connected with the oil inlet of the oil tank (4) through a connecting pipe, the pressure pump (3) is connected with the oil tank (4), the oil outlet of the oil tank (4) is communicated with the oil storage barrel (8) through a connecting pipe, the pressure device (5) is connected with the oil storage barrel (8), the pressure gauge (6) is connected with the oil storage barrel (8), and the pressure relief valve (7) is communicated with the upper part of the oil storage barrel (8) through a connecting pipe.

3. The device for injecting a high-pressure oil displacement agent into an ultra-low permeability oil field according to claim 1, characterized in that: The horizontal detection mechanism comprises a horizontal rod (16) and a level (17) arranged at the middle part of the horizontal rod (16), and the two ends of the horizontal rod (16) are fixedly connected with the sleeves (11) of the corresponding adjustable support legs.

4. The device for injecting a high-pressure oil displacement agent into an ultra-low permeability oil field according to claim 1, characterized in that: The lower end of the support foot (15) is fixedly provided with an antiskid pad (18), so as to improve the support stability.

5. The device for injecting a high-pressure oil displacement agent into an ultra-low permeability oil field according to claim 2, characterized in that: A flowmeter (19) is arranged on the connecting pipe between the water outlet of the oil suction pump (2) and the oil inlet of the oil tank (4), so as to facilitate understanding of the injection amount of the oil displacement agent.

Images