Device for inducing scaling of oilfield produced liquid
By adding seeds to the oil field production liquid induction scale device, the growth of scale-forming substances on the seeds is promoted, and the problem of scale-forming fluids that affect the oil and gas collection and transportation system after mixing the production liquids in different layers is solved, efficient scaling and automatic operation are achieved, and maintenance costs are reduced.
Patent Information
- Application Number
- CN202421995129.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-17
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-17
AI Technical Summary
The scale formation of different layers of production liquids after mixing will affect the normal operation of the oil and gas collection and transportation system, resulting in pipeline blockage, reduced transportation capacity, increased collection and transportation pressure, and high maintenance costs.
The oil field production liquid inducing scaling device is used. This device provides crystal growth sites for scaling substances by adding fine seeds with large specific surface area to the reaction tank, thereby accelerating the growth rate of scaling substances, making them preferentially attached to the seeds and avoiding scaling in the pipeline.
It effectively avoids scaling in the inner wall of the reaction tank and pipelines, achieves efficient scaling of oil production liquid, reduces the loss of crude oil production shutdown and pipeline renewal and maintenance costs, and realizes automated operation and is unattended.
Smart Images
Figure CN222894252U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oil and gas gathering and transportation in oil fields, in particular to an oil field produced liquid induction scaling device. Background Art
[0002] In the oil and gas gathering and transportation process of oil fields, the produced liquid from the wellheads of each oil well in the oil field is usually transported to a metering station through a single-well oil gathering pipeline, and several metering stations are transported to a transfer station through an oil gathering trunk line. In the above two pipelines, the three-phase medium of oil, gas and water is transported in a mixed phase in the same pipeline. After the gas and liquid are separated at the transfer station, the oil-water mixture is pumped in a closed manner to a crude oil dehydration station or a joint station for centralized treatment.
[0003] The underground reservoir types in the same surface oil and gas gathering and transportation area are diverse, the vertical development layers of the underground reservoirs are complex, and the oil-water relationship between the produced fluids in different layers is complex. In some areas, the produced fluids of different development layers contain different scaling ions. For example, the A layer contains Ba 2+ , Ca 2+ , the B layer contains CO 3 2- 、SO 4 2- After the produced fluid from layer A and layer B is mixed, a large amount of precipitation will be produced and attached to the inner wall of the pipeline or valve, causing pipeline blockage, reduced transportation capacity, increased gathering and transportation pressure, etc., seriously affecting the production of oil and gas gathering and transportation system.
[0004] In actual production, in order to solve the above problems, the produced fluids of oil wells of the same layer are usually mixed at the metering station, and then the produced fluids of different layers are mixed at the metering station, so that the scaling ions are concentrated and pre-scaled in the front section of the oil gathering trunk line, avoiding maintenance difficulties and large-scale oil well shutdowns caused by pipeline scaling. However, the inner diameter of the oil gathering trunk line is generally not large, and when the content of scaling ions is high, the oil gathering trunk line scales quickly. In order to maintain the operation of the gathering and transportation pipeline network, it is necessary to regularly shut down and update the severely scaled oil gathering trunk line, which has an adverse impact on oil and gas production and has high maintenance costs.
[0005] Therefore, how to solve the problem that scaling after mixing produced fluids from different layers will affect the normal operation of the oil and gas gathering and transportation system is an urgent problem to be solved by technical personnel in this field. Utility Model Content
[0006] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide an oilfield produced fluid inducing scaling device that can solve the above technical problems.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] An oilfield produced liquid induced scaling device comprises a reaction tank 1, a reaction tank 2 and a control console, wherein the reaction tank 1 and the reaction tank 2 are arranged in parallel, the bottom of the reaction tank 1 is provided with an A-layer produced liquid inlet pipeline 1, the bottom of the reaction tank 2 is provided with an A-layer produced liquid inlet pipeline 2, the A-layer produced liquid inlet pipeline 1 and the A-layer produced liquid inlet pipeline 2 are both connected to the A-layer produced liquid inlet pipeline; the side of the reaction tank 1 is provided with a B-layer produced liquid inlet pipeline 1, the side of the reaction tank 2 is provided with a B-layer produced liquid inlet pipeline 2, the B-layer produced liquid inlet pipeline 1 and the B-layer produced liquid inlet pipeline 2 are both connected to the B-layer produced liquid inlet pipeline; the B-layer produced liquid inlet pipeline 1 is connected with a seed feed pipeline 1, the seed feed pipeline 1 is connected to the The seed buffer tank is connected with one, and the B layer system produced liquid inlet pipeline two is connected with a seed feed pipeline two, and the seed feed pipeline two is connected with the seed buffer tank two; the top of the reaction tank one is provided with a liquid outlet pipeline one, and the top of the reaction tank two is provided with a liquid outlet pipeline two, and the liquid outlet pipeline one and the liquid outlet pipeline two are both connected with the liquid outlet manifold pipeline; the liquid outlet manifold pipeline is also connected with a liquid outlet reflux flushing pipeline one and a liquid outlet reflux flushing pipeline two, the liquid outlet reflux flushing pipeline one is connected with the reaction tank one, and the liquid outlet reflux flushing pipeline two is connected with the reaction tank two; the lower end of the reaction tank is provided with a sewage pipeline one, and the lower end of the reaction tank two is provided with a sewage pipeline two, the sewage pipeline one and the sewage pipeline two are both connected with the sewage manifold pipeline, and the sewage manifold pipeline is connected with the sewage buffer tank.
[0009] Preferably, the reaction tank 1 is provided with a water inlet distributor 1, a lower crystal sieve plate 1, a water inlet distribution pipeline 1 and an upper crystal sieve plate 1 from bottom to top, the water inlet distributor 1 is connected to the A layer system produced liquid inlet pipeline 1, and the water inlet distribution pipeline 1 is connected to the B layer system produced liquid inlet pipeline 1.
[0010] Preferably, the second reaction tank is provided with a second water inlet distributor, a second lower crystal sieve plate, a second water inlet distribution pipeline and a second upper crystal sieve plate from bottom to top, the second water inlet distributor is connected to the second liquid inlet pipeline of the A layer system produced liquid, and the second water inlet distribution pipeline is connected to the second liquid inlet pipeline of the B layer system produced liquid.
[0011] Preferably, the A layer system produced liquid inlet pipeline 1 and the B layer system produced liquid inlet pipeline 1 are both provided with a water inlet electric valve 1, the liquid outlet pipeline 1 is provided with a water outlet electric valve 1, the liquid outlet reflux flushing pipeline 1 is provided with a reflux flushing electric valve 1, the sewage pipeline 1 is provided with a sewage discharge electric valve 1, and the seed feed pipeline 1 is provided with a seed addition electric ball valve 1.
[0012] Preferably, the A layer system produced liquid inlet pipeline two and the B layer system produced liquid inlet pipeline two are both provided with water inlet electric valves, the liquid outlet pipeline two is provided with water outlet electric valves, the liquid outlet reflux flushing pipeline two is provided with reflux flushing electric valves, the sewage pipeline two is provided with sewage discharge electric valves, and the seed feed pipeline two is provided with seed addition electric ball valves.
[0013] Preferably, an ultrasonic level meter and an explosion-proof vent are provided on the top of the sewage buffer tank.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the device adopts the seed method to induce scaling of the oilfield produced liquid mixture, and by pre-adding fine seeds with a large specific surface area in the device, a site for crystal growth is provided for scaling substances, thereby accelerating the growth rate of scaling substances on the seeds, and scaling substances preferentially adhere to the seeds to avoid scaling of the inner wall of the reaction tank and the pipeline; the device adopts an automated operation mode for operations such as sewage discharge and seed addition to achieve unattended operation; in addition, the device adopts a dual-tank parallel operation mode, and when a single tank automatically discharges sewage and adds seeds, the other tank can meet the scaling induction demand, and there is no need to stop production for maintenance, which greatly reduces the loss of crude oil production suspension and the cost of pipeline renewal and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0016] Figure 1 It is a flow chart of the utility model.
[0017] Description of reference numerals:
[0018] 1-Reaction tank 1, 2-Reaction tank 2, 3-Control console, 4-A layer produced liquid inlet pipeline 1, 5-A layer produced liquid inlet pipeline 2, 6-A layer produced liquid outflow pipeline, 7-B layer produced liquid inlet pipeline 1, 8-B layer produced liquid inlet pipeline 2, 9-B layer produced liquid outflow pipeline, 10-Seed feed pipeline 1, 11-Seed buffer tank 1, 12-Seed feed pipeline 2, 13-Seed buffer tank 2, 14-Outlet pipeline 1, 15-Outlet pipeline 2, 16-Outlet manifold pipeline, 17-Outlet reflux flushing pipeline 1, 18-Outlet reflux flushing pipeline 2, 19-Drainage pipeline 1, 20-Drainage pipeline 2, 21-Drainage manifold pipeline , 22- sewage buffer tank, 23- water inlet distributor 1, 24- lower crystal sieve plate 1, 25- water inlet distribution pipeline 1, 26- upper crystal sieve plate 1, 27- water inlet distributor 2, 28- lower crystal sieve plate 2, 29- water inlet distribution pipeline 2, 30- upper crystal sieve plate 2, 31- water inlet electric valve 1, 32- water outlet electric valve 1, 33- backflow flushing electric valve 1, 34- sewage electric valve 1, 35- seeding electric ball valve 1, 36- water inlet electric valve 2, 37- water outlet electric valve 2, 38- backflow flushing electric valve 2, 39- sewage electric valve 2, 40- seeding electric ball valve 2, 41- ultrasonic level meter, 42- explosion-proof vent. DETAILED DESCRIPTION
[0019] The following is a detailed description of the invention of the utility model by way of examples in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.
[0020] Embodiment 1
[0021] like Figure 1As shown, the utility model discloses an oilfield produced liquid induction scaling device, comprising a reaction tank 1, a reaction tank 2 and a control console 3, wherein the reaction tank 1 and the reaction tank 2 are arranged in parallel. The bottom of the reaction tank 1 is provided with an A-layer produced liquid inlet pipeline 1 4, and the bottom of the reaction tank 2 is provided with an A-layer produced liquid inlet pipeline 2 5, and the A-layer produced liquid inlet pipeline 1 4 and the A-layer produced liquid inlet pipeline 2 5 are both connected to the A-layer produced liquid inlet pipeline 6; the side of the reaction tank 1 is provided with a B-layer produced liquid inlet pipeline 7, and the side of the reaction tank 2 is provided with a B-layer produced liquid inlet pipeline 2 8, the B layer system produced liquid inlet pipeline 1 7 and the B layer system produced liquid inlet pipeline 2 8 are both connected to the B layer system produced liquid inlet pipeline 9; the B layer system produced liquid inlet pipeline 1 7 is connected to a seed crystal feed pipeline 10, and the seed crystal feed pipeline 10 is connected to a seed crystal buffer tank 11, and the B layer system produced liquid inlet pipeline 2 8 is connected to a seed crystal feed pipeline 2 12, and the seed crystal feed pipeline 2 12 is connected to the seed crystal buffer tank 11. The buffer tank 13 is connected; a liquid outlet pipeline 14 is provided on the top of the reaction tank 1, and a liquid outlet pipeline 2 15 is provided on the top of the reaction tank 2, and the liquid outlet pipeline 14 and the liquid outlet pipeline 2 15 are both connected to the liquid outlet manifold pipeline 16; the liquid outlet manifold pipeline 16 is also connected to a liquid outlet reflux flushing pipeline 17 and a liquid outlet reflux flushing pipeline 2 18, the liquid outlet reflux flushing pipeline 17 is connected to the reaction tank 1, and the liquid outlet reflux flushing pipeline 2 18 is connected to the reaction tank 2; a sewage pipeline 19 is provided at the lower end of the reaction tank 1, and a sewage pipeline 20 is provided at the lower end of the reaction tank 2, the sewage pipeline 19 and the sewage pipeline 2 20 are both connected to the sewage manifold pipeline 21, the sewage manifold pipeline 21 is connected to the sewage buffer tank 22, and an ultrasonic level meter 41 and an explosion-proof vent 42 are provided on the top of the sewage buffer tank 22.
[0022] Furthermore, in this embodiment, a water inlet distributor 23, a lower crystal sieve plate 24, a water inlet distribution pipeline 25 and an upper crystal sieve plate 26 are sequentially provided in the reaction tank 1 from bottom to top, the water inlet distributor 23 is connected to the A layer system produced liquid inlet pipeline 4, and the water inlet distribution pipeline 25 is connected to the B layer system produced liquid inlet pipeline 7.
[0023] The reaction tank 2 is provided with a water inlet distributor 27, a lower crystal sieve plate 28, a water inlet distribution pipeline 29 and an upper crystal sieve plate 30 from bottom to top. The water inlet distributor 27 is connected to the A layer system produced liquid inlet pipeline 25, and the water inlet distribution pipeline 29 is connected to the B layer system produced liquid inlet pipeline 28.
[0024] The A layer system produced liquid inlet pipeline 4 and the B layer system produced liquid inlet pipeline 7 are both provided with an inlet electric valve 31, the liquid outlet pipeline 14 is provided with an outlet electric valve 32, the liquid outlet reflux flushing pipeline 17 is provided with a reflux flushing electric valve 33, the sewage pipeline 19 is provided with a sewage discharge electric valve 34, and the seed feed pipeline 10 is provided with a seed addition electric ball valve 35.
[0025] The A layer system produced liquid inlet pipeline 25 and the B layer system produced liquid inlet pipeline 28 are both provided with an inlet electric valve 236, the liquid outlet pipeline 215 is provided with an outlet electric valve 237, the liquid outlet reflux flushing pipeline 218 is provided with a reflux flushing electric valve 238, the sewage pipeline 220 is provided with a sewage discharge electric valve 239, and the seed feed pipeline 212 is provided with a seed addition electric ball valve 240.
[0026] Working principle: During normal operation, open the water inlet electric valve 1 31, the water inlet electric valve 2 36, the water outlet electric valve 1 32 and the water outlet electric valve 2 37; close the backflow flushing electric valve 1 33, the backflow flushing electric valve 2 38, the sewage discharge electric valve 1 34, the sewage discharge electric valve 2 39, the crystal seed addition electric ball valve 1 35 and the crystal seed addition electric ball valve 2 40; pre-add crystal seeds to the reaction tank 1 and the reaction tank 2 2, and the lower crystal sieve plate 1 24 and the lower crystal sieve plate 2 28 respectively block the crystal seeds. , to prevent the seed crystals from sinking to the bottom of the tank; the A layer system produced liquid enters the produced liquid induced scaling device through the A layer system produced liquid inlet pipeline 6, and enters the reaction tank 1 and reaction tank 2 respectively through the reaction tank 1 A layer system produced liquid inlet pipeline 4 and the reaction tank 2 A layer system produced liquid inlet pipeline 5; the B layer system produced liquid enters the produced liquid induced scaling device through the B layer system produced liquid inlet pipeline 9, and enters the reaction tank 1 B layer system produced liquid inlet pipeline 7 and the reaction tank 2 B layer system produced liquid inlet pipeline 8. 28 enters reaction tank 1 and reaction tank 22 respectively; the produced liquid of layer A in reaction tank 1 passes through water inlet distributor 23 to make the water inlet evenly distributed and flows upward, carrying the crystal seeds on the lower crystal sieve plate 24 during the flow, so that the crystal seeds are suspended; the produced liquid of layer B in reaction tank 1 enters reaction tank 1 laterally through water inlet distribution pipeline 25 to make the water inlet evenly distributed; the produced liquid of layer A flowing vertically in reaction tank 1 is fully mixed with the produced liquid of layer B flowing laterally, The scaling substances in the mixed liquid are precipitated in large quantities and grow rapidly on the seed crystals to achieve the purpose of inducing scaling. The mixed liquid after scaling is induced continues to flow upward, and the crystals in the mixed liquid are blocked by the upper crystal sieve plate 26. The mixed liquid is discharged from the reaction tank 1 through the liquid outlet pipeline 14 at the top of the reaction tank 1; the scaling induction work flow in the reaction tank 2 is consistent with that in the reaction tank 1; the mixed liquid of the reaction tank 1 and the reaction tank 2 is transported to the downstream oil collection trunk line through the liquid outlet manifold pipeline 16.
[0027] During automatic sewage discharge, reaction tank 1 and reaction tank 2 2 perform sewage discharge work alternately. For example, when reaction tank 1 is discharging sewage, reaction tank 2 2 operates normally. When reaction tank 1 is discharging sewage, the water inlet electric valve 31 and the water outlet electric valve 32 are closed, and the reflux flushing electric valve 33 and the sewage discharge electric valve 34 are opened. The mixed liquid discharged from reaction tank 2 2 enters reaction tank 1 through the liquid outlet reflux flushing pipeline 17, and the lower crystal sieve plate 24 with a certain slope is flushed by the mixed liquid, and the large-particle crystals of the lower crystal sieve plate 24 are discharged from reaction tank 1, and discharged into sewage buffer tank 22 for caching through sewage discharge pipeline 19 and sewage collection pipeline 21 of reaction tank 1; the automatic sewage discharge workflow of reaction tank 2 2 is consistent with that of reaction tank 1; sewage buffer tank 22 performs liquid level detection through ultrasonic liquid level meter 41. When the liquid level reaches the limit value, an automatic sound and light alarm is given at the management station to remind the staff of the management station to transport and clean the sewage buffer tank 22.
[0028] When the crystal seeds are automatically added, the automatic crystal seed addition work should be followed by the automatic sewage discharge work. The reaction tank 1 and the reaction tank 2 perform the automatic crystal seed addition work alternately. For example, when the crystal seeds are automatically added to the reaction tank 1, the reaction tank 2 operates normally. When the crystal seeds are automatically added to the reaction tank 1, the reflux flushing electric valve 33 and the sewage discharge electric valve 34 are closed, the water inlet electric valve 31 and the water outlet electric valve 32 are opened, and the crystal seed addition electric ball valve 35 is automatically adjusted to open. The opening degree and opening time of the crystal seed addition electric ball valve 35 are automatically calculated and adjusted according to the preset crystal seed addition amount. The crystal seeds in the crystal seed buffer tank 11 enter the reaction tank 1 through the crystal seed feed pipeline 10 driven by the B layer system produced liquid, and the automatic crystal seed addition work is completed. The crystal seed automatic addition work process of the reaction tank 2 is consistent with that of the reaction tank 1.
[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and application concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An oilfield produced fluid induction scaling device, comprising a reaction tank 1 (1), a reaction tank 2 (2) and a control console (3), wherein the reaction tank 1 (1) and the reaction tank 2 (2) are arranged in parallel, and characterized in that: The bottom of the reaction tank 1 (1) is provided with an A-layer produced liquid inlet pipeline 1 (4), and the bottom of the reaction tank 2 (2) is provided with an A-layer produced liquid inlet pipeline 2 (5). The A-layer produced liquid inlet pipeline 1 (4) and the A-layer produced liquid inlet pipeline 2 (5) are both connected to the A-layer produced liquid inlet pipeline (6). The side of the reaction tank 1 (1) is provided with a B-layer produced liquid inlet pipeline 1 (7), and the side of the reaction tank 2 (2) is provided with a B-layer produced liquid inlet pipeline 2 (8). The B-layer produced liquid inlet pipeline 1 (7) and the B-layer produced liquid inlet pipeline 2 (8) are both connected to the B-layer produced liquid inlet pipeline (9); the B-layer produced liquid inlet pipeline 1 (7) is connected to a seed crystal feed pipeline 1 (10), the seed crystal feed pipeline 1 (10) is connected to a seed crystal buffer tank 1 (11), the B-layer produced liquid inlet pipeline 2 (8) is connected to a seed crystal feed pipeline 2 (12), the seed crystal The feed pipeline 2 (12) is connected to the seed crystal buffer tank 2 (13); the top of the reaction tank 1 (1) is provided with a liquid outlet pipeline 1 (14), and the top of the reaction tank 2 (2) is provided with a liquid outlet pipeline 2 (15); the liquid outlet pipeline 1 (14) and the liquid outlet pipeline 2 (15) are both connected to the liquid outlet manifold pipeline (16); the liquid outlet manifold pipeline (16) is also connected to the liquid outlet reflux flushing pipeline 1 (17) and the liquid outlet reflux flushing pipeline 2 (18), the The first liquid return flushing pipeline (17) is connected to the first reaction tank (1), and the second liquid return flushing pipeline (18) is connected to the second reaction tank (2); the first reaction tank (1) is provided with a sewage discharge pipeline (19) at the lower end, and the second reaction tank (2) is provided with a sewage discharge pipeline (20) at the lower end; the first sewage discharge pipeline (19) and the second sewage discharge pipeline (20) are both connected to a sewage discharge manifold pipeline (21), and the sewage discharge manifold pipeline (21) is connected to a sewage discharge buffer tank (22).
2. The oilfield produced fluid induction scaling device according to claim 1, characterized in that: The reaction tank (1) is provided with a water inlet distributor (23), a lower crystal sieve plate (24), a water inlet distribution pipeline (25) and an upper crystal sieve plate (26) from bottom to top. The water inlet distributor (23) is connected to a liquid inlet pipeline (4) of the A layer system produced liquid, and the water inlet distribution pipeline (25) is connected to a liquid inlet pipeline (7) of the B layer system produced liquid.
3. The oilfield produced fluid induction scaling device according to claim 1, characterized in that: The second reaction tank (2) is provided with a second water inlet distributor (27), a second lower crystallization sieve plate (28), a second water inlet distribution pipeline (29) and a second upper crystallization sieve plate (30) from bottom to top. The second water inlet distributor (27) is connected to the second liquid inlet pipeline (5) of the A layer produced liquid, and the second water inlet distribution pipeline (29) is connected to the second liquid inlet pipeline (8) of the B layer produced liquid.
4. The oilfield produced fluid scaling induction device according to claim 1, characterized in that: The A layer system produced liquid inlet pipeline 1 (4) and the B layer system produced liquid inlet pipeline 1 (7) are both provided with a water inlet electric valve 1 (31), the liquid outlet pipeline 1 (14) is provided with a water outlet electric valve 1 (32), the liquid outlet reflux flushing pipeline 1 (17) is provided with a reflux flushing electric valve 1 (33), the sewage pipeline 1 (19) is provided with a sewage discharge electric valve 1 (34), and the seed feed pipeline 1 (10) is provided with a seed addition electric ball valve 1 (35).
5. The oilfield produced fluid scaling induction device according to claim 1, characterized in that: The A layer system produced liquid inlet pipeline 2 (5) and the B layer system produced liquid inlet pipeline 2 (8) are both provided with water inlet electric valve 2 (36), the liquid outlet pipeline 2 (15) is provided with water outlet electric valve 2 (37), the liquid outlet reflux flushing pipeline 2 (18) is provided with reflux flushing electric valve 2 (38), the sewage discharge pipeline 2 (20) is provided with sewage discharge electric valve 2 (39), and the seed feed pipeline 2 (12) is provided with seed addition electric ball valve 2 (40).
6. The oilfield produced fluid induction scaling device according to claim 1, characterized in that: An ultrasonic level meter (41) and an explosion-proof vent hole (42) are provided on the top of the sewage buffer tank (22).