CN209908462U - Continuous explosion-proof water-heating water-adding type dosing device for oil well - Google Patents
Continuous explosion-proof water-heating water-adding type dosing device for oil well Download PDFInfo
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- CN209908462U CN209908462U CN201920489527.3U CN201920489527U CN209908462U CN 209908462 U CN209908462 U CN 209908462U CN 201920489527 U CN201920489527 U CN 201920489527U CN 209908462 U CN209908462 U CN 209908462U
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Abstract
A continuous oil well explosion-proof water heating and watering type dosing device relates to a dosing device. Including the box, install well head mixing of water supply system, liquid medicine supply system, unequal double-plunger pump, blender, first ball valve in the box, unequal double-plunger pump includes a big plunger pump and a little plunger pump, and well head mixing of water supply system is connected with the blender through big plunger pump, and liquid medicine supply system is connected with the blender through little plunger pump, and the blender is connected with first ball valve, and the exit end of first ball valve is connected with the connecting pipe that outwards stretches out the box, and the connecting pipe is through preventing the reverse flow valve and connecting the well head. The utility model can improve the dosing effect, prolong the dosing period (more than 90 days), control the ratio of the medicament to the water (1: 10-20), and adopt a hot water heating mode, thereby improving the safety of the equipment and reducing the energy consumption.
Description
Technical Field
The utility model relates to a charge device specifically is an explosion-proof hot-water heating formula charge device of continuous type oil well.
Background
The ternary complex oil displacement technology is a new method for improving the recovery ratio developed in recent years, and becomes a main oil recovery technology for the continuous and stable production of crude oil in Daqing oil fields. However, the alkali three-element combination flooding also reveals many technical problems to be solved, such as scaling of the three-element production well, pump blockage, rod breakage, obvious shortening of pump detection period and the like. Although the previous mine field test has achieved a certain research result in the aspect of scale prevention, the shortcomings of scale law exploration, the mode of adding scale inhibitor, reasonable adding period, adding dosage and the like become main factors restricting the ternary combination flooding high-efficiency exploitation.
The ASP flooding in a certain oil field is already industrially produced, and a test area has a serious oil well scaling problem, so that an antiscaling agent needs to be injected into a well mouth for antiscaling, and the operation rate of a mechanical production well is guaranteed. The conventional mode of injecting the antiscaling agent by a manual or vehicle-mounted pump at one time has the problems of fast concentration attenuation of the agent at the bottom of a well, poor continuity, large labor capacity of workers and the like. Adding the scale inhibitor into a wellhead drip dosing device becomes one of the effective important measures for preventing and inhibiting scale at the wellhead, and the main defects in the prior art are as follows:
1. the existing electric drip dosing device at the wellhead has the problems of short dosing cycle (usually 7 days) (the concentration of the medicament is only 25 percent of that of a pure medicament, the volume of a medicament storage tank is small-usually only 300L), poor well site road conditions and the like, and the dosing time rate of part of oil wells in rainy seasons is zero. Particularly in winter, the snow accumulation period is more than four months, the road leading to each well site is closed, and the tank truck for adding the chemicals cannot approach the well mouth, so that the chemical adding time efficiency is low. The continuous oil well explosion-proof water heating and mixing type dosing device adopts pure chemicals, the volume of a chemical storage tank reaches 1000L, and the dosing period is =7 days × 4 × 3.3 and is approximately equal to 92 days.
2. The prior dosing device has two types, namely an intermittent dosing device and a continuous dosing device, wherein the intermittent dosing device has the advantages that a motor and a pump are in a circulating process of working, stopping the pump and working, and has the defect that the anti-scaling work at the bottom of a well is in a sometimes state, so that the dosing anti-scaling effect is influenced.
3. The medicine adding device in the past is not doped with water, the working fluid level of the 25% concentration medicine from the ground to the oil well is few and hundreds of meters, more and thousands of meters, the medicine constantly contacts the metal sleeve of the oil well from the top, the medicine can produce chemical reaction with the metal of the contact part, not only reduces the effective component of the medicine, but also accelerates the corrosion of the oil well sleeve.
4. The electric drop dosing device of the existing wellhead adopts an electric radiator to heat in a box, and has the following defects: firstly, heating with constant power and high local temperature, so that the temperature is too high when the liquid medicine amount is small, and the components of chemical agents are damaged; waste electric energy (usually each dosing tank consumes more than 2 thousands KW.h in winter); thirdly, as the dosing device is unattended on the well head site, when the well head has leakage or combustible gas flows back, the dosing tank has the danger of fire and explosion. The continuous oil well explosion-proof water heating and mixing type dosing device adopts a water mixing heating and heat preservation mode, and the defects are fully overcome.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an explosion-proof hot-water heating formula charge device of continuous type oil well can improve the medicine effect, prolong the medicine cycle (more than 90 days), control the proportion (1: 10 ~ 20) of medicament and watering to adopt hot water heating mode, both improved the security of equipment and reduced the energy consumption.
The technical scheme for realizing the purpose is as follows: explosion-proof warm formula charge device that adds of water of continuous type oil well, its characterized in that: including the box, install well head mixing of water supply system, liquid medicine supply system, unequal double-plunger pump, blender, first ball valve in the box, unequal double-plunger pump includes a big plunger pump and a little plunger pump, and well head mixing of water supply system is connected with the blender through big plunger pump, and liquid medicine supply system is connected with the blender through little plunger pump, and the blender is connected with first ball valve, and the exit end of first ball valve is connected with the connecting pipe that outwards stretches out the box, and the connecting pipe is through preventing the reverse flow valve and connecting the well head.
The utility model discloses an inequality double-plunger pump pours into the blender into the back with high concentration medicament and well head watering according to certain proportion into, forms the thin liquid medicine of pouring into the sleeve pipe scale control into, mixes in order to realize different proportions, adopts big plunger pump and a little plunger pump of a big one little, accomplishes the mixed injection of different proportions.
The utility model has the advantages that:
1) the dosing period is prolonged. The continuous oil well explosion-proof water heating and watering type dosing device adopts pure chemicals, the volume of a chemical storage tank can reach 1000L, and the dosing period is greatly prolonged (about 90 days). The existing common wellhead dosing device adopts directly prepared liquid medicine to be filled into a liquid storage tank and is injected into the bottom of a well through a pump, and the dosing period is short (usually 7 days) due to the fact that the concentration of the medicine is low (only 25% of pure medicine) and the volume of the medicine storage tank is small (usually only 300L).
2) Is continuously adjustable. The large plunger pump and the small plunger pump are adopted, so that the liquid medicine after the liquid medicine is fully mixed can uniformly and uninterruptedly reach a wellhead, and the concentration and the flow of the liquid medicine are adjusted according to the specific requirements of a well.
3) The safety is high. The connecting pipe is connected with the wellhead through an anti-backflow valve. The anti-backflow valve prevents the combustible gas in the sleeve from flowing backwards to cause fire or explosion.
Further, the box body is an insulation box and is used for insulating the box body in a low-temperature environment.
Furthermore, the mixer is formed by winding two parallel pipelines in a circular ring shape from inside to outside in the same horizontal plane, one ends of the two pipelines positioned in the center are communicated and connected, and the other ends of the two pipelines are respectively used as a liquid inlet and a liquid outlet; the high-concentration medicament and the water are fully mixed in the mixer according to a certain proportion, and the fully mixed diluent reaches a wellhead through a high-pressure hose.
Further, in order to guarantee safety, the mixer is also connected with manometer, fifth ball valve and relief valve respectively, avoids causing the damage of pump because pipeline jam or well head block up.
Further, the liquid medicine supply system comprises a liquid storage tank, a second ball valve and a first filter which are connected in sequence, and the outlet end of the first filter is connected with a small plunger pump.
Further, the exit end of first filter is connected with the vertical level gauge of upwards arranging through the second connecting pipe, and the second connecting pipe passes through the tee junction level gauge, the tee junction is provided with perpendicular port, first horizontal port, second horizontal port, and second connecting pipe threaded connection is in first horizontal port, still overlaps on the second connecting pipe and is equipped with the first sealing joint with the first horizontal port threaded connection of tee junction, and level gauge threaded connection is in the tee junction perpendicular port, still overlaps on the level gauge and is equipped with the second sealing joint with the perpendicular port threaded connection of tee junction, and it is spacing through the step between first sealing head and second connecting pipe, second sealing head and the level gauge, install the control valve that is used for controlling the break-make between first horizontal port and the perpendicular port in the second horizontal port.
The setting up of level gauge conveniently observes the liquid measure in the liquid storage pot, can also judge the imbibition condition of little plunger pump simultaneously because need observe not the normal work of equivalent plunger pump usually when maintaining, the utility model discloses with the tee bend department of level gauge design at liquid storage pot outlet line. Therefore, the liquid suction condition of the small plunger pump can be visually observed on the liquid level meter by closing the second ball valve at the outlet of the liquid storage tank, and if the liquid level is reduced, the small plunger pump is proved to normally work.
The three-way joint, the liquid level meter and the second connecting pipe joint are designed into a double-thread internal and external double-sealing structure, and are controlled by a control valve, so that the maintenance and the repair are convenient.
Furthermore, the wellhead water blending supply system comprises a water inlet pipe, a third ball valve and a third filter which are connected in sequence, wherein the outlet end of the third filter is connected with a large plunger pump, and the water inlet pipe extends out of the box body and is used for being connected with a water blending water source; and a large-flow regulating valve is connected between the large plunger pump and the mixer, and both ends of the large-flow regulating valve are connected with small-flow regulating valves in parallel.
Wherein the flow range of the small flow regulating valve is as follows: 0-10L/min, the flow regulating range of the large-flow regulating valve is as follows: 10-100L/min, select suitable flow control valve according to the size of discharge, and close another flow control valve to realize all can realizing the controllable injection to the watering volume under the different casing pressure condition, flow control valve can guarantee that the liquid medicine after the intensive mixing evenly incessantly reachs the well head simultaneously, and according to the concrete demand adjustment liquid medicine's of well concentration and flow.
Further, big plunger pump and little plunger pump adopt same driver to drive, the driver includes the motor, and the motor output end is connected with the reduction gear, and the adoption biax output of reduction gear to be connected with the power input shaft transmission of big plunger pump, little plunger pump respectively.
Further, the large plunger pump and the small plunger pump are both adjustable variable pumps, and the volume flow ratio between the large plunger pump and the small plunger pump is as follows: 10-20: 1, thereby realizing the mixing of liquid medicines with different proportions.
Furthermore, a fourth ball valve is connected between the third filter and the small plunger pump, two ends of the fourth ball valve are connected with a radiator formed by a return-shaped pipeline, and the radiator is arranged below the liquid storage tank.
The radiator is arranged between the medicament storage tank and the bottom plate, so that the heat of high-temperature water is transferred into the medicament storage tank through a return pipeline, and the heating mode is safe and energy-saving; the 'return' shaped radiator is simple in structure, easy to manufacture, not easy to block, free of occupying space, convenient to install and maintain, and capable of introducing water into the 'return' shaped radiator through the switching flow process by closing the fourth ball valve in winter, and heating and insulating the liquid storage tank through the radiator.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a connection structure of the liquid level meter and a second connection pipe;
FIG. 3 is a schematic diagram of the mixer;
FIG. 4 is a schematic view of a heat sink fixed to the bottom of a liquid reservoir.
Detailed Description
As shown in fig. 1-3, the utility model comprises a heat preservation box body 1, a well mouth watering supply system 3, a liquid medicine supply system 2, an unequal double-plunger pump 4, a mixer 5 and a first ball valve 6 are arranged in the box body 1, the unequal double-plunger pump 4 comprises a big plunger pump 4.1 and a small plunger pump 4.2; the large plunger pump 4.1 and the small plunger pump 4.2 are both adjustable variable pumps, and the volume flow ratio between the large plunger pump and the small plunger pump is as follows: 10-20: 1, big plunger pump 4.1 and little plunger pump 4.2 adopt same driver 7 to drive, and driver 7 includes motor 7.1, and motor 7.1 output is connected with reduction gear 7.2, and reduction gear 7.2 adopts the biax output to be connected with big plunger pump 4.1, little plunger pump 4.2's power input shaft transmission respectively.
As a further description of this embodiment, the mixer 5 may be a conventional mixer known in the prior art, or a mixer formed by two parallel pipelines 5.1 coiled in a circular ring shape from inside to outside in the same horizontal plane as shown in fig. 3, where one end of the two pipelines 5.1 at the center is connected to each other, and the other end is used as a liquid inlet and a liquid outlet respectively.
The mixer 5 is further connected with a pressure gauge 10, a fifth ball valve 12 and a pressure release valve 11 respectively, and the mixer 5 and the pressure gauge 10, the fifth ball valve 12 and the pressure release valve 11 can be connected through a three-way pipe connected in series on the pipeline 5.1 respectively, which is the conventional technology and is not described herein again.
The liquid medicine supply system 2 comprises a liquid storage tank 2.1, a second ball valve 2.2 and a first filter 2.3 which are connected in sequence, the output end of the first filter 2.3 is connected with a small plunger pump 4.2, the outlet end of the first filter 2.3 is connected with a liquid level meter 14 which is vertically and upwards arranged through a second connecting pipe 13, and the second connecting pipe 13 is connected with the liquid level meter 14 through a tee 15.
The tee joint 15 is provided with a vertical port 15.1, a first horizontal port 15.2 and a second horizontal port 15.3, a second connecting pipe 13 is in threaded connection with the first horizontal port 15.2, the second connecting pipe 13 is also sleeved with a first sealing joint 16 in threaded connection with the first horizontal port 15.2 of the tee joint 15, a liquid level meter 14 is in threaded connection with the vertical port 15.1 of the tee joint 15, the liquid level meter 14 is also sleeved with a second sealing joint 17 in threaded connection with the vertical port 15.1 of the tee joint 15, the first sealing joint 16, the second connecting pipe 13, the second sealing joint 17 and the liquid level meter 13 are respectively limited by steps, a control valve 18 for controlling the on-off between the first horizontal port 15.3 and the vertical port 15.1 is installed in the second horizontal port 15.3, the control valve 18 comprises a valve seat 18.1 in threaded connection with the second horizontal port 15.3, a valve core 18.2 is in threaded connection with the center position of the valve seat 18.2, and a sealing ring 18.3 is arranged between the inner wall of the tee joint 15.3 of the second horizontal port 15.3, the outer end of the valve core 18.2 extends out of the valve seat 18.1 and is connected with a handle 18.4, the valve core 18.2 can be driven to move back and forth along the axial direction by rotating the handle 18.4, the opening and closing of the vertical port 15.1 are realized, the annular limiting groove 18.5 is formed in the middle of the inner wall of the valve seat 18.1, the valve core 18.2 is provided with an annular flange 18.6 matched with the annular limiting groove 18.5, when the annular flange 18.6 moves forwards along with the valve core 18.2 to the limit position of the annular limiting groove 18.5, the vertical port 15.1 is closed, and when the annular flange 18.6 moves forwards along with the valve core 18.2 to the limit position of the annular limiting groove 18.5, the vertical port 15.1 is opened.
The wellhead water mixing supply system 3 comprises a water inlet pipe 3.1, a third ball valve 3.2, a third filter 3.3 and a fourth ball valve 3.4 which are connected in sequence, the outlet end of the fourth ball valve 3.4 is connected with a large plunger pump 4.1, two ends of the fourth ball valve 3.4 are connected with a radiator 3.5 formed by a 'return' shaped pipeline, and the radiator 3.5 is arranged below the liquid storage tank 2.1 and can be directly fixed at the bottom of the liquid storage tank 2.1 as shown in fig. 4.
The exit end of big plunger pump 4.1 and little plunger pump 4.2 passes through blender 5 and is connected with first ball valve 6, is connected with large-traffic governing valve 20 between big plunger pump 4.1 and the blender 5, and the both ends of large-traffic governing valve 20 are and have little flow control valve 21, and the exit end of first ball valve 6 is connected with the connecting pipe 8 that outwards stretches out box 1, and the well head is connected through preventing refluence valve 9 to connecting pipe 8.
The utility model discloses a theory of operation:
the volume flow of the large plunger pump 4.1 and the small plunger pump 4.2 is adjusted according to a set value, liquid medicine in the liquid storage tank 2.1 sequentially passes through the second ball valve 2.2, the first filter 2.3 and the small plunger pump 4.2 to enter a mixer, water sequentially passes through the water inlet pipe 3.1, the third ball valve 3.2, the third filter 3.3, the fourth ball valve 3.4 and the large plunger pump 4.1 to enter the large flow regulating valve 20 or the small flow regulating valve 21 and then enters the mixer 5, so that high-concentration medicament and water are fully mixed in the mixer 5 according to a certain proportion.
In winter, in extreme weather of 35 ℃ below zero, the fourth ball valve 3.4 is closed, the water temperature input by the water inlet pipe 3.1 is kept above 5 ℃, the heat of high-temperature water mixing is transmitted into the liquid storage tank 2.1 through the ' return ' shaped radiator 3.5, the heating mode is safe and energy-saving, the return ' shaped radiator 3.5 is simple in structure, easy to manufacture, not easy to block, does not occupy space, and convenient to install and maintain, the fourth ball valve 3.4 is closed in winter, the water mixing is introduced into the ' return ' shaped radiator 3.5 through the switching process, the liquid storage tank 2.1 is heated and insulated through the radiator 3.5, the temperature effect is good, and the energy consumption is low.
Claims (10)
1. Explosion-proof warm formula charge device that adds of water of continuous type oil well, its characterized in that: including the box, install well head mixing of water supply system, liquid medicine supply system, unequal double-plunger pump, blender, first ball valve in the box, unequal double-plunger pump includes a big plunger pump and a little plunger pump, and well head mixing of water supply system is connected with the blender through big plunger pump, and liquid medicine supply system is connected with the blender through little plunger pump, and the blender is connected with first ball valve, and the exit end of first ball valve is connected with the connecting pipe that outwards stretches out the box, and the connecting pipe is through preventing the reverse flow valve and connecting the well head.
2. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the box body is an insulation box.
3. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the mixer is formed by coiling two parallel pipelines in a circular ring shape from inside to outside in the same horizontal plane, one ends of the two pipelines positioned at the center are communicated and connected, and the other ends of the two pipelines are respectively used as a liquid inlet and a liquid outlet.
4. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the mixer is also respectively connected with a pressure gauge, a fifth ball valve and a pressure release valve.
5. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the liquid medicine supply system comprises a liquid storage tank, a second ball valve and a first filter which are connected in sequence, and the outlet end of the first filter is connected with a small plunger pump.
6. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 5, characterized in that: the utility model discloses a filter, including first filter, second filter, third filter, fourth filter, third filter, the exit end of first filter is connected with the vertical level gauge of upwards arranging through the second connecting pipe, and the second connecting pipe passes through the tee junction level gauge, the tee junction is provided with perpendicular port, first horizontal port, second connecting pipe threaded connection is in first horizontal port, still overlap on the second connecting pipe and be equipped with the first sealing joint with tee junction first horizontal port threaded connection, level gauge threaded connection is in tee junction perpendicular port, still overlap on the level gauge and be equipped with the second sealing joint with tee junction perpendicular port threaded connection, it is spacing through the step between first sealing head and second connecting pipe, second sealing head and the level gauge, install the control valve that is used for controlling break-make between first horizontal port and the perpendicular port in the second horizontal port.
7. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the wellhead water blending supply system comprises a water inlet pipe, a third ball valve and a third filter which are connected in sequence, wherein the outlet end of the third filter is connected with a large plunger pump, and the water inlet pipe extends out of the box body and is used for being connected with a water blending water source; and a large-flow regulating valve is connected between the large plunger pump and the mixer, and both ends of the large-flow regulating valve are connected with small-flow regulating valves in parallel.
8. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: big plunger pump and little plunger pump adopt same driver to drive, the driver includes the motor, and the motor output end is connected with the reduction gear, and the adoption biax output of reduction gear to be connected with the power input shaft transmission of big plunger pump, little plunger pump respectively.
9. The continuous oil well explosion-proof water heating and watering type dosing device according to claim 1, characterized in that: the large plunger pump and the small plunger pump are both adjustable variable pumps, and the volume flow ratio between the large plunger pump and the small plunger pump is as follows: 10-20: 1.
10. the continuous oil well explosion-proof water heating and watering type dosing device according to claim 7, characterized in that: and a fourth ball valve is connected between the third filter and the small plunger pump, two ends of the fourth ball valve are connected with radiators, the radiators are return-shaped pipelines, and the radiators are arranged below the liquid storage tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920489527.3U CN209908462U (en) | 2019-04-12 | 2019-04-12 | Continuous explosion-proof water-heating water-adding type dosing device for oil well |
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| CN201920489527.3U CN209908462U (en) | 2019-04-12 | 2019-04-12 | Continuous explosion-proof water-heating water-adding type dosing device for oil well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931035A (en) * | 2019-04-12 | 2019-06-25 | 江苏华安科研仪器有限公司 | The explosion-proof hot-water heating watering-type chemicals dosing plant of continuous type oil well |
-
2019
- 2019-04-12 CN CN201920489527.3U patent/CN209908462U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931035A (en) * | 2019-04-12 | 2019-06-25 | 江苏华安科研仪器有限公司 | The explosion-proof hot-water heating watering-type chemicals dosing plant of continuous type oil well |
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