CN104614193A - Analog well test system - Google Patents
Analog well test system Download PDFInfo
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- CN104614193A CN104614193A CN201410785467.1A CN201410785467A CN104614193A CN 104614193 A CN104614193 A CN 104614193A CN 201410785467 A CN201410785467 A CN 201410785467A CN 104614193 A CN104614193 A CN 104614193A
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Abstract
The invention provides an analog well test system. The system comprises a body extending lengthwise, said body is provided with a lumen extending along the longitudinal extension direction; said sleeve has a cavity capable of accommodating seal the column spacer, between the inner wall of the packer and the outer wall of the string can be formed with an annular space, the packer can partition the annular space into a first chamber and a second chamber; the the body is provided with a side wall of the body through the first inlet and a second inlet, the first inlet can be in communication with the first chamber; a second inlet can be in communication with the second chamber; the first inlet and the second inlet can be connected to an external pressure source, respectively. To achieve the object of the invention to provide different specifications can detect a packer system simulation test well.
Description
Technical field
The present invention relates to oil and gas exploitation field, particularly relate to a kind of pilot system of simulation well.
Background technology
Along with the continuous intensification of oilfield, cause oil temperature to raise, pressure increase, require that subsurface tool and seal element can adapt to the environment of down-hole high temperature, high pressure thus.For this reason, before the new product of subsurface tool and seal element or improvement product use at the scene, need to carry out simulation test according to onsite application operating mode, improve product structure and adjusting process parameter to pinpoint the problems.
At present, main application experiment room simulation experiment system detects the subsurface tool used in petroleum drilling and mining and seal element.In petroleum drilling and mining subsurface tool laboratory simulation test system, usually utilize the dimensional space of industrial and mineral parameter and the environment of down-hole High Temperature High Pressure of simulation test well simulation oil field real oil well.
Simulated experiment well is mainly for the petroleum drilling and mining packer of certain specification provides the test space of simulation, supporting temperature-pressure system is aided with during work, realize the simulation to high temperature and pressure test environment in down-hole in oil exploitation process, to the performance test that packer is correlated with.At present conventional method for designing designs a sleeve body for the packer of often kind of specification, every sleeve body can only carry out simulation test to a kind of packer of specification, therefore when the specification of packer is different, its multipair cylinder internal diameter of answering is also different, and the packer of different size then must join the cylindrical shell of different size.Because the starting material testing cylindrical shell require high, material price is high, and simulated experiment well production cost is comparatively large, and when detecting the different packer of specification, because needs re-establish simulated experiment well, makes overall sense cycle long.
Summary of the invention
The object of this invention is to provide the pilot system of a kind of simulation well of the packer that can detect different size.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize: a kind of pilot system of simulation well, and it comprises: the body that lengthwise extends, and is provided with the inner chamber extended along described lengthwise bearing of trend in described body; Described inner chamber can accommodate the tubing string being arranged with packer, can be formed with annular space between the outer wall of described packer and the inwall of described tubing string, and described annular space can be divided into the first chamber and the second chamber by described packer; Described body is provided with the first entrance and the second entrance that run through described body sidewall, and described first entrance can be communicated with described first chamber; Described second entrance can be communicated with described second chamber; Described first entrance can be connected with external pressure source respectively with described second entrance.
Preferably, it comprises: described body is provided with the first outlet and the second outlet that run through described body sidewall, and described first outlet can be connected with described first chamber; Described second outlet can be connected with described second chamber.
Preferably, it comprises: the second opening being arranged on the first opening on described body sidewall and being arranged on tubing string; Described first opening is connected with external agency container, to make the medium in external agency container be flowed in described inner chamber by described first opening, and then is flowed in described tubing string by described second opening.
Preferably, it comprises: heating apparatus, and described heating apparatus comprises the calandria be set on described body outer wall; Be arranged on the heating medium inlet on the sidewall of described calandria; Be arranged on the heating chamber in described calandria; Be arranged on heating rod in described heating chamber, when heating medium is entered after in described heating chamber by described heating medium inlet, described heating rod can heat described heating medium.
Preferably, it comprises: be arranged on the perforate on the sidewall of described body, in described perforate, be provided with temperature sensor, and described temperature sensor stretches in the described inner chamber of described body, thus can detect described intrinsic temperature.
Preferably, it comprises: computer controlling center, and described computer controlling center has input end and output terminal, and described input end is connected with described temperature sensor, and described output terminal is connected with described heating rod.
Preferably, it comprises: cooling system, and described cooling system comprises heat eliminating medium entrance on the sidewall being arranged at described calandria and heat eliminating medium outlet; To be arranged in described calandria and the coolant guiding channel of body described in spiral surrounding, described coolant guiding channel has first end and the second end, and described first end is connected with described heat eliminating medium entrance, and described second end exports with described heat eliminating medium and is connected.
Preferably, it comprises: the circulation system, the described circulation system comprises coolant medium container, liquid pump, described coolant medium container has inlet end and endpiece, described liquid pump has input port and delivery outlet, the described endpiece of described coolant medium container is connected with the described input port of described liquid pump, and the described inlet end of described coolant medium container exports with described heat eliminating medium and is connected; The described delivery outlet of described liquid pump is connected with described heat eliminating medium entrance.
Preferably, it comprises: pressure system, and described pressure system comprises low-pressure pneumatic pump and high-pressure pneumatic pump, and described low-pressure pneumatic pump and described high-pressure pneumatic pump are in parallel; When opening described low-pressure pneumatic pump, described high-pressure pneumatic pump is in closed condition; When opening described high-pressure pneumatic pump, described low-pressure pneumatic pump is in closed condition.
Preferably, it comprises: export with described first the first flow switch be connected, and exports with described second the second flow switch be connected; When described first flow switch detects the medium flowed out from described first outlet, described first flow switch will send feedback signal; When described second flow switch detects the medium flowed out from described second outlet, described second flow switch will send feedback signal.
The beneficial effect of the pilot system of a kind of simulation well provided by the invention is:
First, the present invention is by being provided with the tubing string being arranged with packer in the body, the internal diameter of this tubing string corresponds between the outer wall of this packer of specification of this packer and the inwall of this tubing string and can be formed with annular space, and described annular space can be divided into the first chamber and the second chamber by this packer, and the first entrance and the second entrance that run through body sidewall is provided with at body, this first entrance can be communicated with the first chamber, this second entrance can be communicated with the second chamber, this first entrance can be connected with external pressure source respectively with this second entrance, achieve when this packer setting, suppress in this first chamber by this first entrance, detect the environment that can packer bear predetermined high pressure, detect complete, suppressed in this second chamber by this second entrance again, detect the environment that can packer bear the high pressure in the second chamber, thus detect that can packer bear predetermined hyperbaric environment, when changing the packer of different size, only need the tubing string changing the size corresponding with packer just can detect the packer of different size, avoid and re-establish simulated experiment well, reduce cost, shorten overall sense cycle, achieve the present invention and a kind of object detecting the pilot system of the simulation well of the packer of different size can be provided,
Second, the present invention is by the first opening be arranged on body sidewall and the second opening be arranged on tubing string, this first opening is connected with external agency container, flow in inner chamber to make the medium in external agency container by this first opening, and then flow in tubing string by this second opening, medium flows along in body and tubing string, by the air scavenge in body and tubing string while liquid flow, until be full of medium by body and tubing string, now when the second flow switch detects the medium flowed out from the second outlet, second flow switch will send feedback signal, close and second export the pneumatic valve that is connected with this and ought export with first the first flow switch be connected, when the medium flowed out from the first outlet being detected, this first flow switch will send feedback signal, close and first export the pneumatic valve be connected with this.Owing to being filled with medium in body and tubing string, so the gas in body and tubing string is excluded totally, under this avoid the environment of high temperature, high pressure explosive event generation and simulate the environment that down-hole has liquid medium to exist;
3rd, the present invention is by arranging the calandria be set on described body outer wall; Be arranged on the heating medium inlet on the sidewall of calandria; Be arranged on the heating chamber in calandria; Be arranged on heating rod in heating chamber, achieve when heating medium is entered after in heating chamber by heating medium inlet, this heating rod can heat heating medium, thus heats intrinsic medium, thus simulates the environment of the high temperature of on-the-spot down-hole;
4th, the present invention is by being arranged on the perforate on the sidewall of described body, temperature sensor is provided with in perforate, this temperature sensor stretches in the inner chamber of body, thus described intrinsic temperature can be detected and computer controlling center is set, this computer controlling center has input end and output terminal, this input end is connected with temperature sensor, output terminal is connected with heating rod, achieve the heating can carrying out controlling according to intrinsic temperature heating rod, thus intrinsic hot environment is controlled in predetermined scope;
5th, the present invention is by arranging cooling system, and this cooling system comprises and is arranged at heat eliminating medium entrance on the sidewall of calandria and heat eliminating medium outlet; To be arranged in calandria and the coolant guiding channel of body described in spiral surrounding, coolant guiding channel has first end and the second end, first end is connected with heat eliminating medium entrance, second end exports with described heat eliminating medium and is connected, achieve by injecting heat eliminating medium in coolant guiding channel, the temperature in calandria can be reduced rapidly, prevent the explosive phenomenon of high-temp liquid;
6th, the present invention is by arranging the circulation system, this circulation system comprises coolant medium container, liquid pump, coolant medium container has inlet end and endpiece, liquid pump has input port and delivery outlet, the endpiece of coolant medium container is connected with the described input port of liquid pump, and the inlet end of coolant medium container exports with heat eliminating medium and is connected; The described delivery outlet of liquid pump is connected with heat eliminating medium entrance, achieves when exporting heat eliminating medium by liquid pump in cooling system, and this heat eliminating medium can circulate and flow into coolant medium container, achieves recycling heat eliminating medium;
7th, the present invention is by arranging pressure system, and this pressure system comprises low-pressure pneumatic pump and high-pressure pneumatic pump, and low-pressure pneumatic pump and high-pressure pneumatic pump are in parallel; When opening low-pressure pneumatic pump, this low-pressure pneumatic pump is used for the air in discharge line, thus adds medium in body, and high-pressure pneumatic pump is in closed condition; When opening high-pressure pneumatic pump, pressurizeed respectively in first chamber and the second chamber, low-pressure pneumatic pump is in closed condition, achieves low-pressure pneumatic pump and adopts little pressure, large discharge to pour into and the employing of high-pressure pneumatic pump high pressure, small-flow precise pressure control, ensure the object of output pressure and precision.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The partial schematic diagram of the pilot system of Fig. 1 a kind of simulation well provided by the present invention;
The schematic diagram of the pilot system of Fig. 2 a kind of simulation well provided by the present invention;
The partial schematic diagram of the pilot system of Fig. 3 a kind of simulation well provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 2, the invention provides a kind of pilot system of simulation well, it comprises: the body 10 that lengthwise extends, and is provided with the inner chamber 13 extended along described lengthwise bearing of trend in described body 10; Described inner chamber 13 can accommodate the tubing string 15 being arranged with packer 23, can be formed with annular space 21 between the outer wall of described packer 23 and the inwall of described tubing string 15, and described annular space 21 can be divided into the first chamber 25 and the second chamber 27 by described packer 23; Described body 10 is provided with the first entrance 29 and the second entrance 31 running through described body 10 sidewall, and described first entrance 29 can be communicated with described first chamber 25; Described second entrance 31 can be communicated with described second chamber 27; Described first entrance 29 can be connected with external pressure source respectively with described second entrance 31.
The pilot system of a kind of simulation well provided by the invention, by being provided with the tubing string 15 being arranged with packer 23 in body 10, the internal diameter of this tubing string 15 corresponds to the specification of this packer 23, this packing, can be formed with annular space 21 between the inwall of the outer wall of 23 and this tubing string 15, described annular space 21 can be divided into the first chamber 25 and the second chamber 27 by this packer 23, and the first entrance 29 and the second entrance 31 running through body 10 sidewall is provided with at body 10, this first entrance 29 can be communicated with the first chamber 25, this second entrance 31 can be communicated with the second chamber 27, this first entrance 29 can be connected with external pressure source respectively with this second entrance 31, achieve when this packer 23 sets, suppress in this first chamber 25 by this first entrance 29, detect the environment that can packer 23 bear predetermined high pressure, detect complete, suppressed in this second chamber 27 by this second entrance 31 again, detect the environment that can packer 23 bear the high pressure in the second chamber 27, thus detect that can packer 23 bear predetermined hyperbaric environment, when changing the packer 23 of different size, only need the tubing string 15 changing the size corresponding with packer 23 just can detect the packer 23 of different size, avoid and re-establish simulated experiment well, reduce cost, shorten overall sense cycle, achieve the present invention and a kind of object detecting the pilot system of the simulation well of the packer of different size can be provided.
The pilot system of a kind of simulation well provided by the invention can be applied to oil well, gasser.
As shown in Figure 1, in the present embodiment, the oil well that uses for simulated field of body 10 that lengthwise extends, is provided with the inner chamber 13 that the lengthwise bearing of trend along body 10 extends in this body 10, this inner chamber 13 is for the accommodating packer 23 that will detect and tubing string 15 supporting with it.When having detected a kind of packer 23 of model, change the packer 23 of another kind of model and tubing string 15 supporting with it can provide a kind of object detecting the pilot system of the simulation well of the packer 23 of different size to reach the present invention by taking out packer 23 that this detection completes and tubing string 15 supporting with it.
This body 10 comprises Part I 11, Part II 43 and Part III 53.When detecting packer 23, packer 23 being placed in the inner chamber 13 of body 10, by this Part I 11, Part II 43 and Part III 53 packer 23 being sealed in this inner chamber 13 and detecting.
The Part I 11 of this body 10 has first end 33 and the second end 35, and this first end 33 is formed with boss 37.This inner chamber 13 can accommodate the tubing string 15 being arranged with packer 23, in the present embodiment, when detecting packer 23, the end of tubing string 15 one end and flange 39 are fixed, again flange 39 to be erected on boss 37 and to be sealed by seal between flange 39 and boss 37, tubing string 15 from the gap between flange 39 and boss 37 to outward leakage, thus can not be placed in the inner chamber 13 of body 10 and be formed with the first annular space 41 between the inwall of the outer wall of tubing string 15 and body 10 by liquids and gases completely.The first through hole 49 that the internal diameter of tubing string 15 is identical is provided with, the center line of this first through hole 49 and the centerline collineation of tubing string 15 at the center of flange 39.
The Part II 43 of this body 10 has the recess 45 matched with flange 39, and this Part II 43 is fixed by screw and boss 37 thus is fixed on Part I 11 by flange 39.The mode that this Part II 43 and boss 37 fix is not limited to this, and can also be other fixed form, such as bolt be fixed.The second through hole 51 that the internal diameter of tubing string 15 is identical is provided with, the center line of this second through hole 51 and the centerline collineation of tubing string 15 at the center of Part II 43.
The Part III 53 of this body 10 has the perforate 55 can held packer 23 and pass, and this Part III 53 is fixed by screw and Part II 43, thus seals this tubing string 15.
As shown in Figure 1, in the present embodiment, the sidewall of tubing string 15 away from flange 39 one end is provided with the second opening 45, this second opening 45 is connected with the inner chamber 13 of body 10.
As shown in Figure 1, in the present embodiment, when detecting, packer 23 is through perforate 55, one end is connected with external pneumatic pump, and the other end is set in tubing string 15, can be formed with annular space 21 between the outer wall of described packer 23 and the inwall of described tubing string 15, thus when detecting, this annular space 21 can be divided into the first chamber 25 and the second chamber 27 by this packer 23.This first chamber 25 and the second chamber 27 are the state of simulation packer 23 when underground work, and namely packer 23 is when underground work, sets on down-hole casing, thus is split by the annular space formed between packer 23 and down-hole casing.
As shown in Figure 1, in the present embodiment, body 10 is provided with the first entrance 29 and the second entrance 31 running through body 10 sidewall, and this first entrance 29 can be communicated with the first chamber 25; This second entrance 31 can be communicated with the second chamber 27; This first entrance 29 can be connected with external pressure source respectively with this second entrance 31.Detect the effect that packer 23 sets under the hyperbaric environment of down-hole, hyperbaric environment simulation must be carried out respectively to the first chamber 25 be separated into by packer 23 and the second chamber 27, thus just can detect that can packer 23 bear the high pressure in the first chamber 25 and bear the high pressure in the second chamber 27, thus just can detect that can packer 23 meet the performance of down-hole high pressure environment.First entrance 29 and the second entrance 31 are respectively used to pressurize to the first chamber 25 and the second chamber 27, to make form predetermined hyperbaric environment in the first chamber 25 and the second chamber 27.
As shown in Figure 1, in the present embodiment, body 10 is provided with the first outlet 57 and the second outlet 59 running through body 10 sidewall, and this first outlet 57 can be connected with the first chamber 25, this second outlet 59 can be connected with the second chamber 27, when detecting packer 23 and can meeting the environment of down-hole high pressure, need to pressurize respectively to the first chamber 25 and the second chamber 27, after being pressurizeed in the first chamber 25, the high pressure in the first chamber 25 is made to keep a period of time, then the high pressure in the first chamber 25 to be discharged, high pressure in first chamber 25 is discharged by the first outlet 57, in like manner, after being pressurizeed in the second chamber 27, the high pressure in the second chamber 27 is made to keep a period of time, then the high pressure in the second chamber 27 to be discharged, high pressure in second chamber 27 is discharged by the second outlet 59.
As shown in Figure 1, in the present embodiment, the second end 35 of the Part I 11 of body 10 is provided with the first opening 61, and this first opening 61 is connected with the inner chamber 13 of body 10.This first opening 61, for being connected with external agency container, makes the medium in external agency container flow in this inner chamber 13 by this first opening 61.
As shown in Figure 1, in the present embodiment, heating apparatus is used for heating to body 10, thus the medium in body 10 is warmed to certain temperature, thus when detecting packer 23 environment of energy simulated field high temperature.This heating apparatus comprises the calandria 56 be set on body 10 outer wall; Be arranged on the heating medium inlet 54 on the sidewall of calandria 56; This heating medium inlet 54 is connected with heating medium vessel 52, thus the heating medium in heating medium vessel 52 flows in calandria 56 by this heating medium inlet 54.Be arranged on the heating chamber 94 in calandria 56; Be arranged on heating rod 60 in heating chamber 94, when in heating medium to enter calandria 56 heating chamber 94 by heating medium inlet 54, heating rod 60 can heat heating medium.
As shown in Figure 1, in the present embodiment, be arranged on the perforate 100 on the sidewall of body 10, be provided with temperature sensor 66 in perforate 100, this temperature sensor 66 is for measuring the temperature in body 10.
As shown in Figure 2, in the present embodiment, computer controlling center 58, for according to temperature sensor 66 the temperature detected in the body 10 that obtains control the heating of heating rod 60, make the temperature in body 10 meet the requirements of range of control.This computer controlling center 58 has input end 101 and output terminal 102, and input end 101 is connected with temperature sensor 66, and output terminal 102 is connected with heating rod 60.
As shown in Figure 1, in the present embodiment, cooling system, for cooling the hot environment in body 10.This cooling system comprises the heat eliminating medium entrance 74 on the sidewall being arranged at calandria 56 and is arranged on the heat eliminating medium outlet 92 on the sidewall of calandria 10; To be arranged in heating chamber 94 and the coolant guiding channel 76 of spiral surrounding body 10, coolant guiding channel 76 has first end 75 and the second end 77, and first end 75 is connected with heat eliminating medium entrance 74, and the second end 77 and heat eliminating medium export 92 and be connected.
As shown in Figure 2, in the present embodiment, the circulation system, for reclaiming the heat eliminating medium in cooling system again to input heat eliminating medium to cooling system when detecting another kind of instrument to be detected.This circulation system comprises coolant medium container 82, liquid pump 72, this coolant medium container 82 has inlet end 84 and endpiece 86, described liquid pump 72 has input port 88 and delivery outlet 90, and endpiece 86 is connected with the input port 88 of liquid pump 72, and inlet end 84 and heat eliminating medium export 92 and be connected; The delivery outlet 90 of liquid pump 72 is connected with heat eliminating medium entrance 74.When cooling, liquid pump 72 extracts heat eliminating medium from the endpiece 86 of coolant medium container 82, then by the delivery outlet 90 of liquid pump 72 heat eliminating medium is input in the coolant guiding channel 76 in heating chamber 94, thus heating chamber 94 is cooled, and then the medium in body 10 is cooled.
As shown in Figure 2, in the present embodiment, pressure system, this pressure system is used for suppressing in body 10.This pressure system comprises air compressor 62, gas-holder 64, stop valve 21, Air-regulating valves 22, solenoid valve 30, solenoid valve 68, Air-regulating valves 28, low-pressure pneumatic pump 26, high-pressure pneumatic pump 24, first pneumatic valve 36, second pneumatic valve 38, the 3rd pneumatic valve 40, the 4th pneumatic valve 42, the 6th pneumatic valve 44, the 7th pneumatic valve 46, the 8th pneumatic valve 48.Low-pressure pneumatic pump 26 and high-pressure pneumatic pump 24 are in parallel; When opening low-pressure pneumatic pump 26, this low-pressure pneumatic pump is used for the air in discharge line, thus adds medium in body 10, and high-pressure pneumatic pump 24 is in closed condition; When opening high-pressure pneumatic pump 24, pressurizeed respectively in first chamber 25 and the second chamber 27, low-pressure pneumatic pump 26 is in closed condition, achieve that low-pressure pneumatic pump 26 adopts that little pressure, large discharge pour into and high-pressure pneumatic pump 24 adopts high pressure, small-flow precise pressure control, ensure the object of output pressure and precision.
First pneumatic valve 36 one end is connected with high-pressure pneumatic pump 24 with low-pressure pneumatic pump 26, and the other end is connected with the second entrance 31; Second pneumatic valve 38 one end is connected with high-pressure pneumatic pump 24 with low-pressure pneumatic pump 26, the other end is connected with the first entrance 29, thus can by opening separately the pressurization that the first pneumatic valve 36 and the second pneumatic valve 38 realize respectively to the first chamber 25 and the second chamber 27.3rd pneumatic valve 40 one end is connected with high-pressure pneumatic pump 24 with low-pressure pneumatic pump 26, and the other end is connected with packer 23, thus can realize carrying out injection liquid to packer 23 separately, thus makes packer 23 realize setting.4th pneumatic valve 42 one end is connected with high-pressure pneumatic pump 24 with low-pressure pneumatic pump 26, and the other end is connected with the first opening 61, thus opens the 4th pneumatic valve 4 medium can be made to be flowed in body 10 by the first opening 61.
As shown in Figure 2, in the present embodiment, export the 57 first flow switches 50 be connected with described first, export 59 the second flow switches 34 be connected with described second; Whether this first flow switch 50 has medium to flow out from described first outlet 57 for detecting, and whether this second flow switch 34 has medium to flow out from the second outlet 59 for detecting.
The course of work of the pilot system of a kind of simulation well provided by the present invention is as follows:
As shown in Figure 2, in the present embodiment, the first step: packer 23 is set in tubing string 15, be lowered in the inner chamber 13 of body 10, the Part II 43 of body 10 is fixed on Part I 11, the Part III 53 of body 10 is fixed on Part II 43, thus packer 23 is sealed in inner chamber 13.Now packer 23 is in the state of not setting, the annular space 21 formed between packer 23 and tubing string 15 not seal by packer 23, as shown in Figure 3.
Second step: add medium and exhaust in the inner chamber of body 10 and tubing string 15 to make to be full of medium in the inner chamber 13 of body 10 and tubing string 15, thus is the working environment having liquid medium to exist when packer 23 provides simulation underground work on the one hand; Another aspect is in fact also the process of being discharged by the gas in the inner chamber 13 of body 10 and tubing string 15 to the process of filled media in the inner chamber 13 of body 10 and tubing string 15, like this that the air scavenge in inner chamber 13 and tubing string 15 is clean, just avoid the generation of explosive event.
Specific works process is as follows: open air compressor 62 to gas-holder 64 air feed, opens Air-regulating valves 22, Air-regulating valves 28 and provides source of the gas for high-pressure pneumatic pump 24 and low-pressure pneumatic pump 26.Open stop valve 70, opens solenoid valve 30 provides low-pressure gas for low-pressure pneumatic pump 26, while low-pressure pneumatic pump 26 is opened, open the first pneumatic valve 36, second pneumatic valve 38, the 3rd pneumatic valve 40, the 4th pneumatic valve 42, the 6th pneumatic valve 44, the 7th pneumatic valve 46, the 8th pneumatic valve 48, medium is sucked in body 10 from test(ing) medium container 32.The present invention adopts in low-pressure pneumatic pump 26 pairs of bodies 10 and carries out perfusion medium, can reach the object adopting the perfusion of little pressure, large discharge.Medium enters in the inner chamber 13 of body 10 by the first opening 61, enter in tubing string 15 by the second opening 45 again, because the packer 23 in tubing string 15 is in unset state, second end 35 of medium along tubing string 15 to the Part I 43 of body 10 flows, when the second flow switch 34 detects the medium flowed out from the second outlet 59, second flow switch 34 will send feedback signal, in the present embodiment, this feedback signal is 24V, close and second export 59 the 7th pneumatic valves 46 be connected with this, make medium second cannot export outside 59 outflow bodies 10 by this; When first flow switch 50 detects the medium flowed out from the first outlet 57, this first flow switch 50 will send feedback signal, in the present embodiment, this feedback signal is 24V, close and first export 57 the 6th pneumatic valves 44 be connected with this, medium first cannot to be exported outside 57 outflow bodies 10 by this.Close the first pneumatic valve 36, second pneumatic valve 38, the 3rd pneumatic valve 40, the 4th pneumatic valve 42, the 8th pneumatic valve 48 and low-pressure pneumatic pump 26 simultaneously, stop injected media in body 10.Owing to being filled with medium in body 10 and tubing string 15, so the gas in body 10 and tubing string 15 is excluded totally, under this avoid the environment of high temperature, high pressure explosive event generation and simulate the environment that down-hole has liquid medium to exist.
Second step: the medium injected in body 10 is heated.First heating medium flows in calandria 56 by heating medium inlet 54 from heating medium vessel 52; In computer controlling center 58, set test temperature, in present embodiment, this test temperature is 0-350 DEG C; Heating rod 60 is started working, thus the heating medium in calandria 56 is heated, and then by the medium in calandria 56, the medium stated in body 10 is heated, when the temperature of the medium that temperature sensor 66 detects in body 10 reaches set temperature, thermostatic process will be entered; Make the temperature that the medium in body 10 reaches predetermined like this, thus simulate the environment of down-hole high temperature.
3rd step: packer 23 sets.Opens solenoid valve 68 provides high-pressure air source for high-pressure pneumatic pump 24, opens the 3rd pneumatic valve 40, thus the medium in test(ing) medium container 32 outputs in packer 23 by high-pressure pneumatic pump 24, and packer 23 realizes setting under the effect of highly pressurised liquid, as shown in Figure 2.After packer 23 sets, the annular space 21 formed between the inwall of the outer wall of this packer 23 and tubing string 15 is divided into the first chamber 25 and the second chamber 27.Close the 3rd pneumatic valve 40 and high-pressure pneumatic pump 24.
4th step: pressurizeed in the first chamber 25.Open the second pneumatic valve 38 and high-pressure pneumatic pump 24, the medium in test(ing) medium container 32 exports by high-pressure pneumatic pump 24, thus inputs high-pressure medium in the first chamber 25, thus pressurizeed in the first chamber 25, be forced into setting value, in the present embodiment, pressurization scope: 0-35MPa.After having pressurizeed, close high-pressure pneumatic pump 24, make in the first chamber 25 hyperbaric environment keep a period of time, then open the 6th pneumatic valve 44 and carry out relief pressure.Earth pressure release completes, and closes the second pneumatic valve 38 and the 6th pneumatic valve 44.First chamber 25 high pressure of packer 23 has detected.
5th step: pressurizeed in the second chamber 27.Open the first pneumatic valve 36 and high-pressure pneumatic pump 24, the medium in test(ing) medium container 32 exports by high-pressure pneumatic pump 24, thus inputs high-pressure medium in the second chamber 27, thus pressurizeed in the second chamber 27, be forced into setting value, in the present embodiment, pressurization scope: 0-35MPa.After having pressurizeed, close high-pressure pneumatic pump 24, make in the second chamber 27 hyperbaric environment keep a period of time, then open the 7th pneumatic valve 46 and carry out relief pressure.Earth pressure release completes, and closes the first pneumatic valve 36 and the 7th pneumatic valve 46.Second chamber 25 high pressure of packer 23 has detected.
The present invention adopts high-pressure pneumatic pump 24 to pressurize to the first chamber 25 and the second chamber 27, achieves high pressure, small-flow precise pressure control, ensures the object of output pressure and precision.
6th step: get rid of medium process.Open liquid pump 72, input heat eliminating medium to heat eliminating medium entrance 74, heat eliminating medium enters coolant guiding channel 76, thus the heating medium in calandria 56 is cooled to safe temperature, thus the medium in cooling body 10.Open stop valve 78, the 4th pneumatic valve 42, the 8th pneumatic valve 48, to aerating in body 10, get rid of the medium in body 10 and tubing string 15 under gas pressure, open air-cooled cooling tube 80 heat eliminating medium, medium enters test(ing) medium container 32.
The pilot system of a kind of simulation well provided by the present invention the testing conditions that meets as follows:
Test(ing) medium: diesel oil;
Predetermined pressurization scope: 0-35MPa;
Predetermined test temperature: 0-350 DEG C;
Predetermined temperature uniformity: ± 2 DEG C;
Predetermined pressure, temperature measurement accuracy: ± 0.5%FS;
Predetermined pressure, temperature control precision: ± 1%FS.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.
Claims (10)
1. a pilot system for simulation well, is characterized in that, it comprises:
The body that lengthwise extends, is provided with the inner chamber extended along described lengthwise bearing of trend in described body; Described inner chamber can accommodate the tubing string being arranged with packer, can be formed with annular space between the outer wall of described packer and the inwall of described tubing string, and described annular space can be divided into the first chamber and the second chamber by described packer;
Described body is provided with the first entrance and the second entrance that run through described body sidewall, and described first entrance can be communicated with described first chamber; Described second entrance can be communicated with described second chamber; Described first entrance can be connected with external pressure source respectively with described second entrance.
2. the pilot system of simulation well according to claim 1, is characterized in that, it comprises: described body is provided with the first outlet and the second outlet that run through described body sidewall, and described first outlet can be connected with described first chamber; Described second outlet can be connected with described second chamber.
3. the pilot system of simulation well according to claim 2, is characterized in that, it comprises: the second opening being arranged on the first opening on described body sidewall and being arranged on tubing string; Described first opening is connected with external agency container, to make the medium in external agency container be flowed in described inner chamber by described first opening, and then is flowed in described tubing string by described second opening.
4. the pilot system of simulation well according to claim 3, is characterized in that, it comprises: heating apparatus, and described heating apparatus comprises the calandria be set on described body outer wall; Be arranged on the heating medium inlet on the sidewall of described calandria; Be arranged on the heating chamber in described calandria; Be arranged on heating rod in described heating chamber, when heating medium is entered after in described heating chamber by described heating medium inlet, described heating rod can heat described heating medium.
5. the pilot system of simulation well according to claim 4, it is characterized in that, it comprises: be arranged on the perforate on the sidewall of described body, temperature sensor is provided with in described perforate, described temperature sensor stretches in the described inner chamber of described body, thus can detect described intrinsic temperature.
6. the pilot system of simulation well according to claim 5, it is characterized in that, it comprises: computer controlling center, and described computer controlling center has input end and output terminal, described input end is connected with described temperature sensor, and described output terminal is connected with described heating rod.
7. the pilot system of simulation well according to claim 6, is characterized in that, it comprises: cooling system, and described cooling system comprises heat eliminating medium entrance on the sidewall being arranged at described calandria and heat eliminating medium outlet; To be arranged in described calandria and the coolant guiding channel of body described in spiral surrounding, described coolant guiding channel has first end and the second end, and described first end is connected with described heat eliminating medium entrance, and described second end exports with described heat eliminating medium and is connected.
8. the pilot system of simulation well according to claim 7, it is characterized in that, it comprises: the circulation system, the described circulation system comprises coolant medium container, liquid pump, described coolant medium container has inlet end and endpiece, described liquid pump has input port and delivery outlet, and the described endpiece of described coolant medium container is connected with the described input port of described liquid pump, and the described inlet end of described coolant medium container exports with described heat eliminating medium and is connected; The described delivery outlet of described liquid pump is connected with described heat eliminating medium entrance.
9. the pilot system of simulation well according to claim 8, is characterized in that, it comprises: pressure system, and described pressure system comprises low-pressure pneumatic pump and high-pressure pneumatic pump, and described low-pressure pneumatic pump and described high-pressure pneumatic pump are in parallel; When opening described low-pressure pneumatic pump, add test(ing) medium in described body, described high-pressure pneumatic pump is in closed condition; When opening described high-pressure pneumatic pump, carry out input high-pressure medium respectively to described first chamber and described second chamber, described low-pressure pneumatic pump is in closed condition.
10. the pilot system of simulation well according to claim 9, is characterized in that, it comprises: export with described first the first flow switch be connected, and exports with described second the second flow switch be connected; When described first flow switch detects the medium flowed out from described first outlet, described first flow switch will send feedback signal; When described second flow switch detects the medium flowed out from described second outlet, described second flow switch will send feedback signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785467.1A CN104614193A (en) | 2014-12-17 | 2014-12-17 | Analog well test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785467.1A CN104614193A (en) | 2014-12-17 | 2014-12-17 | Analog well test system |
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| Publication Number | Publication Date |
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| CN104614193A true CN104614193A (en) | 2015-05-13 |
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| CN201410785467.1A Pending CN104614193A (en) | 2014-12-17 | 2014-12-17 | Analog well test system |
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| CN109916616A (en) * | 2019-04-16 | 2019-06-21 | 吉林大学 | A kind of experimental bench and method for testing static pressure fishing device |
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Application publication date: 20150513 |