CN216342079U - Sand control and water control simulation test system under complex working conditions - Google Patents
Sand control and water control simulation test system under complex working conditions Download PDFInfo
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- CN216342079U CN216342079U CN202121522811.XU CN202121522811U CN216342079U CN 216342079 U CN216342079 U CN 216342079U CN 202121522811 U CN202121522811 U CN 202121522811U CN 216342079 U CN216342079 U CN 216342079U
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Abstract
The utility model discloses a sand control and water control simulation test system under complex working conditions, which comprises a simulation shaft, a sand adding and water adding system, an oil adding system and a tail fluid treatment system, wherein the simulation shaft is arranged on a pitching support with an adjustable inclination angle, the simulation shaft is provided with at least three shaft pipe nipples which are connected in series, the side wall of each shaft pipe nipple is provided with a liquid inlet which is connected with the sand adding and water adding system and the oil adding system, a sealing end cover is provided with a first liquid outlet and a second liquid outlet, the first liquid outlet is connected with a central pipe nipple, the second liquid outlet is connected with a second annulus, the first liquid outlet of each tail shaft nipple is connected with a first unit of the tail fluid treatment system, and the second liquid outlet of each shaft nipple is connected with a second unit of the tail fluid treatment system through a valve. The utility model can avoid the influence of the scale of the device on the water control test result, and is beneficial to realizing the accurate evaluation of the water control performance; the sand control and water control simulation and performance evaluation tests can be simultaneously carried out; and complex working conditions can be simulated.
Description
Technical Field
The utility model belongs to the field of water control and sand control well completion in the oil and gas exploitation industry, and particularly relates to a sand control and water control simulation test system under a complex working condition.
Background
For loose sandstone reservoirs accompanied with bottom water and needing water injection development, sand production and water production of oil and gas wells are important factors influencing oil and gas development, and sand production causes the problems of near-wellbore zone blockage, shaft sand burying, equipment erosion damage, increased difficulty in oil and gas treatment in the later period, and the like, and even stratum collapse, oil well shutdown and the like. A great deal of effluent can form a dominant channel in a reservoir stratum, the output of a high oil-bearing stratum is inhibited, the problems of the reduction of the productivity of an oil well, the increase of water content, the burden of production equipment, the increase of the treatment cost of produced liquid, oil and water and the like are caused, and in addition, the sand production problem is aggravated by the scouring action of the produced water. Therefore, the key to realize the stable production and the yield increase of the oil well is to stabilize the formation sand, control the oil-water interface and delay the water breakthrough time of the oil well.
In order to realize sand control and water control of an oil well, gravel packing is widely applied as a common sand control process, stratum sand is blocked outside a well barrel by utilizing a pore throat inside a gravel packing layer to control the production of the stratum sand, meanwhile, gravel is filled in the well barrel and a well wall annular space, and the flow resistance difference caused by the radial and axial flow distance of the stratum produced liquid in the well barrel plays roles of preventing axial fluid channeling of the well barrel and improving the water control effect. In the aspect of a water control tool, a sand control screen pipe is combined with flow control devices such as an AICD valve and an ICV valve to form the water control screen pipe, the water control screen pipe is widely applied to water control and sand control well completion of an oil well, and the oil-water profile adjustment and the formation water output control are realized mainly by installing a throttle valve and mechanically regulating the opening degree of the throttle valve on a screen pipe at a production section of the oil well or generating additional flow resistance by utilizing oil-water density difference. The sand control and water control process is obviously influenced by underground working conditions, the process is complex, the secondary construction difficulty is high, indoor simulation tests need to be carried out on the sand control and water control process before construction, effect evaluation needs to be carried out, and the conventional sand control and water control simulation and evaluation technology mainly has the following problems:
1) the existing sand control and water control evaluation technology respectively designs a sand control simulation test and a water control simulation test aiming at a sand control and water control process, the existing test device cannot simultaneously carry out the sand control and water control simulation test and the sand control and water control evaluation, and the mutual influence of the sand control and water control process and the adaptability to the working condition cannot be considered in the test process;
2) the existing sand control and water control test device can only simulate a small part of working conditions such as actual oil well liquid production amount to carry out sand control and water control simulation and performance evaluation, the difference between the test working conditions and the field working conditions is large, the effect of the packer in the working conditions such as segmental sand control and water control cannot be simulated, a sand control and water control simulation test needs to be carried out under relatively stable or simple test conditions, the test conditions cannot be adjusted or are difficult to adjust, and the existing device and test method lack sufficient adaptability to sand control and water control simulation under complex working conditions; 3) the existing related test device only has one simulated shaft nipple, the scale is generally small, when the water control test is carried out, the influence of oil-water flow and water content on the scale of the device is obvious, and the evaluation precision and reliability of the water control performance are limited.
In conclusion, a set of test device capable of simulating different production and geological conditions to carry out oil well sand control and water control integrated simulation and performance test tests is not available at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sand control and water control simulation test system under complex working conditions for solving the technical problems in the known technology, and the system can simulate different production and geological conditions to carry out sand control and water control integrated simulation and performance test tests on oil wells.
The technical scheme adopted by the utility model for solving the technical problems in the prior art is as follows: a sand control and water control simulation test system with complex working conditions comprises a simulation shaft, a sand adding and water adding system, a refueling system and a tail fluid treatment system which are connected with the simulation shaft, wherein the tail fluid treatment system is provided with two units which are connected in parallel, the simulation shaft is arranged on a pitching support with an adjustable inclination angle, the simulation shaft is provided with at least three serially connected shaft nipples, two ends of each shaft nipple are respectively provided with a sealing end cover, a central pipe nipple, a screen pipe nipple and a filling isolation net which are coaxially arranged with the shaft nipples are sequentially arranged in the shaft nipples from inside to outside, a first annular space is formed between the central pipe nipple and the screen pipe nipple, a second annular space is formed between the screen pipe nipples and the filling isolation net, gravel layers are filled in the second annular space, filter screens are respectively arranged at the bottoms and the tops of the gravel layers, two ends of the central pipe and the screen pipe nipples are respectively connected with the sealing end covers through a sealing sleeve, the end part of the filling isolation net is connected with the sealing end cover in a sealing way, a water control valve is installed on the side wall of the central pipe nipple, pressure guide pipes are arranged inside the central pipe nipple, inside the first annular space and inside the second annular space, the pressure guide pipes penetrate through the sealing sleeve and the shaft nipple to be connected with corresponding differential pressure sensors, the pressure guide pipes are connected with the sealing sleeve in a sealing way, a liquid inlet connected with the sand adding and water adding system and the oil adding system is arranged on the side wall of the shaft nipple, a first liquid discharge port and a second liquid discharge port are arranged on the sealing end cover, the first liquid discharge port is connected with the nipple central pipe, the second liquid discharge port is connected with the second annular space, two second liquid discharge ports are respectively arranged on two sides of the first liquid discharge port, and the first liquid discharge ports of two adjacent shafts are connected, and a first liquid discharge port of the tail shaft nipple is connected with a first unit of the tail liquid treatment system, second liquid discharge ports corresponding to two adjacent shaft nipples are connected, and each second liquid discharge port of the shaft nipple is connected with a second unit of the tail liquid treatment system through a valve.
The sand adding and water adding system is provided with a water supply pipeline, and a water storage tank, a water driving pump, a throttle valve I, an automatic sand adding device and a flowmeter I are sequentially connected onto the water supply pipeline along the water supply direction.
The refueling system is provided with an oil supply pipeline, and an oil storage tank, an oil displacement pump, a throttle valve II and a flowmeter II are sequentially connected to the oil supply pipeline along the oil supply direction.
The tail liquid treatment system is characterized in that the tail liquid treatment system is the same in unit structure and is provided with a liquid drainage pipeline, a solid-liquid separator and an oil-water separator are sequentially connected onto the liquid drainage pipeline along the liquid drainage direction, the upper part of the oil-water separator is connected with an oil collecting tank through a flowmeter III, and the lower part of the oil-water separator is connected with a water collecting tank through a flowmeter IV.
Every 3 ~ 5 groups of feed liquor hole along the axial equipartition of pit shaft nipple joint, every group feed liquor hole is equipped with 3 ~ 5 along the circumference equipartition.
The utility model has the advantages and positive effects that: by optimizing the structure of the simulation shaft and adopting the structure that a plurality of simulation shafts are connected in series, the influence of the scale of the device on the water control test result can be avoided, and the accurate evaluation of the water control performance is further facilitated; the requirements of a sand prevention simulation test and a water control simulation test are considered, and the sand prevention and water control simulation and performance evaluation tests can be carried out simultaneously; the method can simulate production and geological conditions such as actual oil well shaft inclination angle, liquid production amount, water content, stratum sand production, oil well inflow profile, crude oil physical property, well completion mode and the like, and carry out sand prevention and water control simulation test, the test conditions are close to the field, and the test result is more convincing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a wellbore pup joint structure of the present invention.
In the figure, 101, a water storage tank; 102 driving a water pump; 103. a throttle valve I; 104. an automatic sand feeder; 105. a flowmeter I; 201. an oil storage tank; 202. driving an oil pump; 203. a throttle valve II; 204. a flowmeter II; 301. a pitch support; 302. a wellbore nipple; 303. filling an isolation net; 304. a gravel layer; 305. a screen pipe nipple; 306. a central tube nipple; 307. filtering with a screen; 308. sealing sleeves; 309. a water control valve; 310. sealing the end cap; 311. a pressure guide pipe; 312. a first drain port; 313. a second liquid discharge port; 401. a solid-liquid separator; 402. an oil-water separator; 403. an oil collecting tank; 404. a water collecting tank.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
referring to fig. 1 and 2, a complex working condition sand control and water control simulation test system comprises a simulation wellbore, and a sand adding and water adding system, a oil adding system and a tail fluid treatment system connected with the simulation wellbore, wherein the tail fluid treatment system is provided with two units connected in parallel, the simulation wellbore is installed on an inclination angle adjustable pitching support 301, the simulation wellbore is provided with at least three wellbore nipples 302 connected in series, two ends of the wellbore nipples 302 are respectively provided with a sealing end cover 310, a central pipe nipple 306, a screen nipple 305 and a filling isolation net 303 coaxially arranged with the wellbore nipples 302 are sequentially arranged in the wellbore nipples 302 from inside to outside, a first annular space is formed between the nipples 306 and the screen nipples 305, a second annular space is formed between the screen nipples 305 and the filling isolation net 303, a gravel layer 304 is filled in the second annular space, and filter screens 307 are respectively arranged at the bottom and the top of the gravel layer 304, the two ends of the central pipe short section 306 and the screen pipe short section 305 are respectively connected with the sealing end cover through a sealing sleeve 308, the end part of the filling isolation net 303 is connected with the sealing end cover in a sealing way, a water control valve 309 is installed on the side wall of the central pipe short section 306, pressure guide pipes 311 are respectively arranged inside the central pipe short section 306, the first annular space and the second annular space, the pressure guide pipes 311 penetrate through the sealing sleeve 308 and the shaft short section 302 and are connected with corresponding differential pressure sensors, the pressure guide pipes 311 are connected with the sealing sleeve 308 in a sealing way, liquid inlets connected with the sand and water adding system and the oil adding system are arranged on the side wall of the shaft short section 302, a first liquid outlet 312 and a second liquid outlet 313 are arranged on the sealing end cover 310, the first liquid outlet 312 is connected with the shaft short section 302, and the second liquid outlet 313 is connected with the second annular space, the two second liquid discharge ports 313 are respectively arranged on two sides of the first liquid discharge port 312, the first liquid discharge ports of two adjacent shaft short sections are connected, the first liquid discharge port of the tail shaft short section is connected with the first unit of the tail liquid treatment system, the second liquid discharge ports corresponding to the two adjacent shaft short sections are connected, and the second liquid discharge port 313 of each shaft short section is connected with the second unit of the tail liquid treatment system through a valve.
In this embodiment, the sand and water adding system is provided with a water supply pipeline, and a water storage tank 101, a water driving pump 102, a throttle valve i 103, an automatic sand adding device 104 and a flow meter i 105 are sequentially connected to the water supply pipeline along a water supply direction. The refueling system is provided with an oil supply pipeline, and an oil storage tank 201, an oil displacement pump 202, a throttle valve II 203 and a flowmeter II 204 are sequentially connected to the oil supply pipeline along the oil supply direction. The tail liquid treatment system is characterized in that the two units of the tail liquid treatment system are identical in structure and are respectively provided with a liquid drainage pipeline, a solid-liquid separator 401 and an oil-water separator 402 are sequentially connected to the liquid drainage pipeline along the liquid drainage direction, the upper part of the oil-water separator 402 is connected with an oil collecting tank 403 through a flowmeter III, and the lower part of the oil-water separator 402 is connected with a water collecting tank 404 through a flowmeter IV. Every 3 ~ 5 groups of feed liquor hole along axial equipartition of pit shaft nipple joint 302, every group feed liquor hole is equipped with along 3 ~ 5 of circumference equipartition, the even feed liquor of being convenient for.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (5)
1. A sand control and water control simulation test system under complex working conditions comprises a simulation shaft, a sand adding and water adding system, a refueling system and a tail fluid treatment system which are connected with the simulation shaft, and is characterized in that the tail fluid treatment system is provided with two units which are connected in parallel, the simulation shaft is arranged on a pitching support with an adjustable inclination angle, the simulation shaft is provided with at least three shaft nipples which are connected in series, sealing end covers are arranged at two ends of each shaft nipple, a central pipe nipple, a screen pipe nipple and a filling isolation net which are coaxially arranged with the shaft nipples are sequentially arranged inside the shaft nipples from inside to outside, a first annular space is formed between the central pipe nipples and the screen pipe nipples, a second annular space is formed between the screen pipe nipples and the filling isolation net, a gravel layer is filled in the second annular space, and filter screens are arranged at the bottom and the top of the gravel layer, the two ends of the central pipe short section and the screen pipe short section are respectively connected with the sealing end cover through a sealing sleeve, the end part of the filling isolation net is connected with the sealing end cover in a sealing way, a water control valve is installed on the side wall of the central pipe short section, pressure guide pipes are respectively arranged inside the central pipe short section, the first annular space and the second annular space, the pressure guide pipes penetrate through the sealing sleeve and the shaft short section and are connected with corresponding differential pressure sensors, the pressure guide pipes are connected with the sealing sleeve in a sealing way, liquid inlets connected with the sand and water adding system and the oil adding system are arranged on the side wall of the shaft short section, a first liquid discharge port and a second liquid discharge port are arranged on the sealing end cover, the first liquid discharge port is connected with the central pipe short section, the second liquid discharge port is connected with the second annular space, and the number of the second liquid discharge ports is two, the two adjacent shaft short sections are connected with the first drainage port, the first drainage port of the tail shaft short section is connected with the first unit of the tail fluid treatment system, the second drainage ports corresponding to the two adjacent shaft short sections are connected with the second drainage port of the tail fluid treatment system, and each of the second drainage ports of the shaft short sections is connected with the second unit of the tail fluid treatment system through a valve.
2. The complex working condition sand control and water control simulation test system according to claim 1, wherein the sand adding and water adding system is provided with a water supply pipeline, and a water storage tank, a water driving pump, a throttle valve I, an automatic sand adding device and a flow meter I are sequentially connected to the water supply pipeline along a water supply direction.
3. The complex working condition sand control and water control simulation test system according to claim 1, wherein the oil filling system is provided with an oil supply pipeline, and an oil storage tank, an oil displacement pump, a throttle valve II and a flow meter II are sequentially connected to the oil supply pipeline along an oil supply direction.
4. The complex working condition sand control and water control simulation test system according to claim 1, wherein two units of the tail liquid treatment system are identical in structure and are respectively provided with a liquid drainage pipeline, a solid-liquid separator and an oil-water separator are sequentially connected to the liquid drainage pipeline along a liquid drainage direction, the upper part of the oil-water separator is connected with an oil collecting tank through a flowmeter III, and the lower part of the oil-water separator is connected with a water collecting tank through a flowmeter IV.
5. The complex working condition sand control and water control simulation test system according to claim 1, wherein 3-5 groups of liquid inlet holes are uniformly distributed in each shaft nipple along the axial direction, and 3-5 liquid inlet holes are uniformly distributed in each group along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121522811.XU CN216342079U (en) | 2021-07-06 | 2021-07-06 | Sand control and water control simulation test system under complex working conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121522811.XU CN216342079U (en) | 2021-07-06 | 2021-07-06 | Sand control and water control simulation test system under complex working conditions |
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| Publication Number | Publication Date |
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| CN216342079U true CN216342079U (en) | 2022-04-19 |
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| CN202121522811.XU Active CN216342079U (en) | 2021-07-06 | 2021-07-06 | Sand control and water control simulation test system under complex working conditions |
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| CN (1) | CN216342079U (en) |
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- 2021-07-06 CN CN202121522811.XU patent/CN216342079U/en active Active
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