CN103643929A - Asphalt particle profile control effect predicting device and method for three-dimensional cementation model - Google Patents
Asphalt particle profile control effect predicting device and method for three-dimensional cementation model Download PDFInfo
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- CN103643929A CN103643929A CN201310633039.2A CN201310633039A CN103643929A CN 103643929 A CN103643929 A CN 103643929A CN 201310633039 A CN201310633039 A CN 201310633039A CN 103643929 A CN103643929 A CN 103643929A
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Abstract
The invention relates to an asphalt particle profile control effect predicting device for a three-dimensional cementation model. The device comprises a large-drift-diameter screwed pipe, a perforation simulation device, a near wellbore formation simulation device and a three-dimensional well group cementation model. The invention further relates to a method for simulating asphalt particle profile control with the utilization of the device. According to the method, asphalt particle profile control liquid sequentially enters the large-drift-diameter screwed pipe, a turbulence occurring groove, the perforation simulation device and the near wellbore formation simulation device through a constant-flux pump, before entering the three-dimensional well group cementation model, the asphalt particle profile control liquid has a certain-degree turbulent condition, and finally the asphalt particle profile control liquid enters the target model successfully. The asphalt particle profile control effect predicting device is safe and reliable and can be used for relatively actually simulating the motion state of asphalt particles before and after the asphalt particles enter the target three-dimensional well group cementation model, effectively overcome the defect that due to the fact that the particles are injected into a fracture surface and serious blockage is generated, the particles cannot be injected into the model and achieve that the asphalt particles are used for performing indoor profile control experiment study and effectiveness evaluation.
Description
Technical field
The present invention relates to water controlled field middle and later periods profile control and water plugging technology field, relate in particular to a kind of device and method for three-dimensional well group consolidated model pitch particle profile control effect prediction.
Background technology
Oil field is in waterflooding development process for many years, the pore structure of subsurface reservoir, mineral composition, cementation type etc., all can there is variation in various degree, especially at note, adopt intensity larger in the situation that, some has the loose sand of the weak feature such as cementing, its pore throat radius, cements etc. there will be increase, the phenomenon tailing off, and then the permeability in this region can become large, when follow-up fluid process, will form water drive advantage passage, the well water rate of climb is accelerated, water drive sweep efficiency reduces, remaining oil enrichment degree uprises, the final development effectiveness that affects oil field, therefore, the development of oil field profile control and water plugging technology has vital effect to Tapping Residual Oil under water drive advantage passage.
Utilize pitch particle to carry out profile control popularizes gradually in the middle of oil field, and for different reservoir, the formulation of its profile control strategy still need complete by the means of laboratory experiment, although current indoor displacement test means have entered a higher level, but when carrying out pitch particle profile control, still there is a comparatively serious problem, when the three-dimensional well group of the profile control solution target approach of oil-containing pitch particle is cementing, existence due to features such as himself particle size and viscosity, particle can be gathered in the entrance wall of threedimensional model greatly, and then by its obstruction, thereby do not reach the object of Reality simulation subsurface reservoir profile control movement of particles rule.
Summary of the invention
The present invention is directed to existing problem in prior art, a kind of device and method for three-dimensional well group consolidated model pitch particle profile control effect prediction is provided, the problem that solution easily assembles at indoor asphalt particle profile control experimentation medium pitch particle the entrance wall that stops up three-dimensional well group consolidated model, thereby solution laboratory experiment and the problem that the rule that true subsurface reservoir shows differs greatly, further improve the application technology of particle profile control in laboratory experiment.
The present invention relates to a kind of device for three-dimensional well group consolidated model pitch particle profile control effect prediction, it is characterized in that, device comprises large latus rectum screwed pipe, analogue perforation device, simulation near wellbore formation device and three-dimensional well group consolidated model, and analogue perforation device, simulation near wellbore formation device and three-dimensional well group consolidated model are nested successively from the inside to the outside; Analogue perforation device is hollow cylindrical structure, and wall has a plurality of through holes, and the upper and lower two ends of analogue perforation device are sealed by the end plate of duroplasts, and internal cavities forms turbulent generation trough, and upper head plate central authorities arrange opening, is communicated with large latus rectum screwed pipe fluid.
Further, large latus rectum screwed pipe is a female extra heavy pipe line of tool; Turbulent flow generation trough bottom is provided with supersonic generator; Simulation near wellbore formation device is that three-dimensional well group consolidated model is the round-meshed rectangular structure of Intermediate Gray by the high porous medium layer that oozes of the cementing hollow cylindrical forming of coarse granule, and length equates with width.
Further, large latus rectum screwed pipe diameter is 10mm, and form of thread is triangle, and nominal diameter is 3mm-4mm, and central diameter is 2.675mm-3.545mm, and path is 2.459mm-3.242mm, and pitch is 0.5mm-0.7mm.
Further, analogue perforation device is steel hollow cylindrical-shaped structure, and internal diameter is 25mm, and external diameter is 45mm.
Further, the through hole on analogue perforation device is evenly covered with the cylindrical wall of steel hollow, and aperture is 5mm-7mm.
Further, supersonic generator is stepless time adjustment supersonic generator.
Further, the permeability of simulation near wellbore formation device is 5-10 times of three-dimensional well group consolidated model, and internal diameter is 45mm, and external diameter is 75mm.
Further, described coarse grained particle diameter is 0.5mm-3mm.
Further, the technical data of this device is: the length maximum of (1) three-dimensional well group consolidated model can reach 80cm, and highly maximum can reach 12cm, and middle Circularhole diameter is 75mm; (2) operating temperature is room temperature-80 ℃.
By said apparatus, for simulating a method for pitch particle profile control, its key step is as follows:
(1) three-dimensional well group consolidated model is carried out and formation water;
(2) three-dimensional well group consolidated model is carried out to saturated oils, make irreducible water;
(3) three-dimensional well group consolidated model is carried out to constant speed or level pressure water drive, until moisture 98%;
(4) utilize constant-flux pump that the profile control solution of bituminous particle is pumped into large latus rectum screwed pipe, turbulent generation trough, analogue perforation device, simulation near wellbore formation device successively, finally enter three-dimensional well group consolidated model;
(5) carry out follow-up water drive, until moisture, return to 98%.
Experimental facilities provided by the present invention and method safety are reliable, simple to operate, and effect is better.Effectively solved the deficiency of laboratory experiment to the simulation of pitch particle profile control rule, further reduced the error between indoor displacement test and true subsurface reservoir, realized and utilized laboratory experiment means to the policy development of pitch particle profile control and effect assessment.
Accompanying drawing explanation:
Fig. 1 is experimental facilities schematic diagram of the present invention.
Fig. 2 is the schematic diagram of analogue perforation device
Fig. 3 is profile adjustment and oil displacement effect curve figure of the present invention
Wherein: 1, constant-flux pump; 2, fluid reservoir; 3, large latus rectum screwed pipe; 4, turbulent generation trough; 5, analogue perforation device; 6, simulation near wellbore formation device; 7, three-dimensional well group consolidated model; 8, liquid collection beaker.
The specific embodiment
In order to make object of the present invention, experimental facilities and method more clear, below in conjunction with drawings and the embodiments, the present invention is described in further detail.Should be appreciated that instantiation described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, device for three-dimensional well group consolidated model pitch particle profile control effect prediction provided by the invention, mainly comprise large latus rectum screwed pipe 3, analogue perforation device 5, simulation near wellbore formation device 6 and three-dimensional well group consolidated model 7, analogue perforation device 5, simulation near wellbore formation device 6 and three-dimensional well group consolidated model 7 are nested successively from the inside to the outside; Analogue perforation device 5 is hollow cylindrical structure, and wall has a plurality of through holes, and upper and lower two ends are sealed by the end plate of duroplasts, and internal cavities forms turbulent generation trough 4, and upper head plate central authorities arrange opening, are communicated with large latus rectum screwed pipe 3 fluids.Constant-flux pump 1 is communicated with fluid reservoir 2 by pipeline, fluid reservoir 2 is divided into simulated oil fluid reservoir, simulated formation water fluid reservoir and profile control solution fluid reservoir, fluid reservoir 2 is communicated with analogue perforation device 5 fluids by large latus rectum screwed pipe 3, and four angles of three-dimensional well group consolidated model are symmetrical arranged with liquid collection beaker 8 and are communicated with.Large latus rectum screwed pipe 3 can make profile control solution progressively enter turbulent condition, prevents that profile control particle from precipitating; Turbulent flow generation trough 4 can further promote the turbulence level of profile control solution, and profile control particle is fully disperseed in profile control solution; Analogue perforation device 5, can make profile control solution flow in the pipeline of similar capillary bunch, to reach the action effect of perforation to profile control solution in true pit shaft; It is mobile that simulation near wellbore formation device 6 can make profile control solution progressively enter in porous media, further makes being evenly distributed of profile control particle, finally makes profile control particle enter smoothly three-dimensional well group consolidated model.
Large latus rectum screwed pipe 3 is the female extra heavy pipe lines of tool, can make the pitch particle in profile control solution keep suspended state, its tooth form is triangle thread, nominal diameter is at 3mm-4mm, central diameter is at 2.675mm-3.545mm, path is at 2.459mm-3.242mm, and pitch is at 0.5mm-0.7mm, and tooth form angle is 60 °.
Turbulent flow generation trough 4 external diameters are 25mm, and bottom is provided with supersonic generator; Make the motion of liquid generation certain rule, it has the feature of stepless time adjustment, and there is no moving component and electromagnetic radiation, and the extent of damage of profile control particle has been dropped to extremely low level.
Analogue perforation device 5 is steel hollow cylindrical-shaped structure, and internal diameter is 25mm, and external diameter is 45mm, wall has a plurality of through holes, the wall that is covered with uniformly carbon steel hollow cylinder processed, aperture is 5mm-7mm, further prevents that pitch particle is bonded together and precipitates.
Simulation near wellbore formation device 6 is by the high porous medium layer that oozes of the cementing hollow cylindrical forming of coarse granule, internal diameter is 45mm, and external diameter is 75mm, and its permeability is far above three-dimensional well group consolidated model, the flow regime that makes profile control solution progressively enter porous media, its multiple at 5-10 doubly.
The specification of the available three-dimensional well group consolidated model of this experimental facilities, the length of three-dimensional well group consolidated model equates with width, and maximum can reach 80cm, and highly maximum can reach 12cm, permeability and degree of porosity can design according to formation at target locations reservoir properties, and operating temperature is room temperature-80 ℃.
With the high 60cm * 60cm * 4.5cm that is of a size of of three-dimensional well group consolidated model 7 length and width, average pore is 0.28, and top layer is followed successively by 200mD to bottom permeability, 500mD, and 1200mD is example.The method of utilizing said apparatus simulation pitch particle profile control, comprises the following steps:
(1), three-dimensional well group consolidated model is carried out to saturated formation water;
(2), three-dimensional well group consolidated model is carried out to saturated oils, make irreducible water;
(3), three-dimensional well group consolidated model carries out constant speed water drive, injection rate is 4ml/min, until moisture 98%;
(4), utilize constant-flux pump 1 that the profile control solution of bituminous particle is pumped into large latus rectum screwed pipe 3, turbulent generation trough 4, analogue perforation device 5, simulation near wellbore formation device 6 successively, finally enter three-dimensional well group consolidated model 7, it injects slug is 0.3PV;
(5), carry out follow-up water drive, until moisture, return to 98%.
By said method, make bitumeniferous profile control solution just have turbulent condition to a certain degree before the three-dimensional well group consolidated model 7 of target approach, final realization smoothly, to the 7 more macroporous shutoff of target three-dimensional well group model, reaches the object of profile control.
Port of export aquifer yield and oil production are measured to the pitch profile control production performance graph having obtained shown in Fig. 3, and result shows, by the method for the invention, injects after pitch profile control solution, and moisture content declines 25%, oil increment 260ml.
The foregoing is only better embodiment of the present invention, do not limit the present invention, all any modifications of making within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the device for the prediction of three-dimensional well group consolidated model pitch particle profile control effect, device comprises large latus rectum screwed pipe, analogue perforation device, simulation near wellbore formation device and three-dimensional well group consolidated model, and analogue perforation device, simulation near wellbore formation device and three-dimensional well group consolidated model are nested successively from the inside to the outside; It is characterized in that, analogue perforation device is hollow cylindrical structure, and wall has a plurality of through holes, the upper and lower two ends of analogue perforation device are sealed by the end plate of duroplasts, internal cavities forms turbulent generation trough, and upper head plate central authorities arrange opening, is communicated with large latus rectum screwed pipe fluid.
2. device as claimed in claim 1, is characterized in that, large latus rectum screwed pipe is a female extra heavy pipe line of tool; Turbulent flow generation trough bottom is provided with supersonic generator; Simulation near wellbore formation device is that three-dimensional well group consolidated model is the round-meshed rectangular structure of Intermediate Gray by the high porous medium layer that oozes of the cementing hollow cylindrical forming of coarse granule, and length equates with width.
3. device as claimed in claim 1 or 2, is characterized in that, large latus rectum screwed pipe diameter is 10mm, and form of thread is triangle, and nominal diameter is 3mm-4mm, and central diameter is 2.675mm-3.545mm, and path is 2.459mm-3.242mm, and pitch is 0.5mm-0.7mm.
4. the device as described in aforementioned arbitrary claim 1-3, is characterized in that, analogue perforation device is steel hollow cylindrical-shaped structure, and internal diameter is 25mm, and external diameter is 45mm.
5. the device as described in aforementioned arbitrary claim, is characterized in that, the through hole on analogue perforation device is evenly covered with the cylindrical wall of steel hollow, and aperture is 5mm-7mm.
6. the device as described in aforementioned arbitrary claim, is characterized in that, supersonic generator is stepless time adjustment supersonic generator.
7. the device as described in aforementioned arbitrary claim, is characterized in that, the permeability of simulation near wellbore formation device is 5-10 times of three-dimensional well group consolidated model, and internal diameter is 45mm, and external diameter is 75mm.
8. the device as described in aforementioned arbitrary claim, is characterized in that, described coarse grained particle diameter is 0.5mm-3mm.
9. the device as described in aforementioned arbitrary claim, is characterized in that, the technical data of this device is as follows:
(1) the length maximum of three-dimensional well group consolidated model can reach 80cm, and highly maximum can reach 12cm, and middle Circularhole diameter is 75mm;
(2) operating temperature: room temperature-80 ℃.
10. the device described in any one in claim 1-9 is used for simulating a method for pitch particle profile control, comprises the following steps:
(1) three-dimensional well group consolidated model is carried out and formation water;
(2) three-dimensional well group consolidated model is carried out to saturated oils, make irreducible water;
(3) three-dimensional well group consolidated model is carried out to constant speed or level pressure water drive, until moisture 98%;
(4) utilize constant-flux pump that the profile control solution of bituminous particle is pumped into large latus rectum screwed pipe, turbulent generation trough, analogue perforation device, simulation near wellbore formation device successively, finally enter three-dimensional well group consolidated model;
(5) carry out follow-up water drive, until moisture, return to 98%.
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| CN201310633039.2A CN103643929A (en) | 2013-12-03 | 2013-12-03 | Asphalt particle profile control effect predicting device and method for three-dimensional cementation model |
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| CN201310633039.2A CN103643929A (en) | 2013-12-03 | 2013-12-03 | Asphalt particle profile control effect predicting device and method for three-dimensional cementation model |
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| CN112967245A (en) * | 2021-03-01 | 2021-06-15 | 创新奇智(青岛)科技有限公司 | Battery detection method and device, electronic equipment and readable storage medium |
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