CN104090073B - High temperature leak stopping gelling performance tester - Google Patents
High temperature leak stopping gelling performance tester Download PDFInfo
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- CN104090073B CN104090073B CN201410315917.0A CN201410315917A CN104090073B CN 104090073 B CN104090073 B CN 104090073B CN 201410315917 A CN201410315917 A CN 201410315917A CN 104090073 B CN104090073 B CN 104090073B
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Abstract
The invention provides a kind of high temperature leak stopping gelling performance tester, comprise the gel container for storing colloid, the top of described gel container is provided with clamp flange, bottom is provided with the thermostable fluorine glue sealing-plug with gel container inwall close contact, and colloid is sealed in described gel container by clamp flange and thermostable fluorine glue sealing-plug; The bottom vertical of described thermostable fluorine glue sealing-plug is connected with screw mandrel, described screw mandrel with for driving the elevating mechanism that thermostable fluorine glue sealing-plug moves or moves down to be connected; Gravity sensor is provided with between described screw mandrel top and fluorine glue seal, the sidewall of gel container is respectively arranged with the first temperature sensor, the second temperature sensor, described gravity sensor, the first temperature sensor, the second temperature sensor, elevating mechanism are all connected with control system, the sidewall of gel container are provided with air release, zone of heating and attemperator.The present invention can the temperature resistance of accurate evaluation leak stopping gel, becomes colloidality, sticky wall, swelling property and pressure-bearing property.
Description
Technical field
The present invention relates to oilfield drilling fluid shutoff formation leakage field in the process of petroleum exploration and development, particularly relate to a kind of can the instrument of gel state at simulated formation temperature, for testing the high temperature leak stopping gelling performance tester of gel one-tenth colloidality at the formation temperature, sticky wall, swelling property, pressure-bearing property.
Background technology
Be born so far from modern petroleum industry, leakage (problem) always along with the exploratory development process of petroleum gas, and creates serious impact to the development of petroleum industry.The problem such as drilling cost increase, construction period prolongation, reservoir pollution increasing that leakage causes also annoyings oil worker always.
According to foreign statistic, current drilling well down-hole meet in the loss that complex situations cause: leakage accounts for 58.5%, and hole instability accounts for 24%, bit freezing accounts for 3.5%, and bit balling accounts for 3.5%, and barite sedimentation accounts for 3.5%, Deal With Drilling Fluid is improper accounts for 3.5%, maximum to miss the loss caused.Will be cost-saving and accelerate cost recovery in drilling process to us so solve well leakage problem, ensure that the research and development application of wellbore construction safety and new technology has greatly positive effect.By analyzing the way of different leakage type and process leakage, find that gel is used to shutoff stratum severe mud losses more and more widely as a kind of high-quality, efficiently leak stopping slurry.In order to effectively improve the success ratio of gel in the severe mud losses of shutoff stratum, needing (guarantee) gel to have good temperature resistance, becoming colloidality, sticky wall, the performance such as swelling property and pressure-bearing property, rare to reach gel anti-impact, that stops lives, and that fills out expires, and intensity height waits leak stopping performance requirement.And also there is no above-mentioned whole core capabilities needed for pertinent instruments energy accurate evaluation leak stopping gel at present.
Summary of the invention
The object of the invention is to solve the defect that above-mentioned prior art exists, provide a kind of can evaluate gel at the formation temperature plastic state temperature resistance, become the high temperature leak stopping gelling performance tester of colloidality, sticky wall, swelling property, pressure-bearing property.
A kind of high temperature leak stopping gelling performance tester, comprise the gel container for storing colloid, the top of described gel container is provided with clamp flange, bottom is provided with the thermostable fluorine glue sealing-plug with gel container inwall close contact, and colloid is sealed in described gel container by clamp flange and thermostable fluorine glue sealing-plug; The bottom vertical of described thermostable fluorine glue sealing-plug is connected with screw mandrel, described screw mandrel with for driving the elevating mechanism that thermostable fluorine glue sealing-plug moves or moves down to be connected; Gravity sensor is provided with between described screw mandrel top and thermostable fluorine glue seal, the sidewall of gel container is respectively arranged with the first temperature sensor, the second temperature sensor, described gravity sensor, the first temperature sensor, the second temperature sensor, elevating mechanism are all connected with control system, the sidewall of gel container are provided with air release, zone of heating and attemperator.
Further, high temperature leak stopping gelling performance tester as above, described clamp flange is provided with tensimeter.
Further, high temperature leak stopping gelling performance tester as above, described zone of heating and attemperator adopt tracklayer heater to make thermal source, are equipped with insulation material and shell.
Further, high temperature leak stopping gelling performance tester as above, the safe pressure of described air release is 0.3Mpa, exceedes this pressure releasing pressure automatically.
Further, high temperature leak stopping gelling performance tester as above, the range ability of described first temperature sensor 3, second temperature sensor 6 is 0 ~ 300 DEG C, and measuring accuracy is 0.1 DEG C, and material is stainless steel.
The ability meter of high temperature leak stopping gel provided by the invention, the temperature resistance of leak stopping gel can be evaluated, become colloidality, sticky wall, swelling property and pressure-bearing property, solve the gelling performance accurate evaluation problem for shutoff stratum severe mud losses in drilling process: 1) at the formation temperature, the physical presence state (gel temperature resistance, one-tenth colloidality and wall built-up) of gel; 2) at different temperatures, the gelation time of gel and bearing resistance; 3) after heating different time, the bearing capacity change of gel; 4) gel volumetric expansion amount at different temperatures.By these apparatus measures data can analyze inject drop ply gel institute energy packing force value, judge existence (such as temperature resistance, the swelling property of underground gel, become colloidality and wall built-up etc.), for judging that the feasibility of gel leak stopping provides experimental basis.
Accompanying drawing explanation
Fig. 1 is the structural representation of high temperature leak stopping gelling performance tester of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is 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.
Fig. 1 is the structural representation of high temperature leak stopping gelling performance tester of the present invention, as shown in Figure 1, high temperature leak stopping gelling performance tester provided by the invention, comprise the gel container 2 for storing colloid, the top of described gel container 2 is provided with clamp flange 9, bottom is provided with the thermostable fluorine glue sealing-plug 8 with gel container 2 inwall close contact, and colloid is sealed in described gel container 2 by clamp flange 9 and thermostable fluorine glue sealing-plug 8; The bottom vertical of described thermostable fluorine glue sealing-plug 8 is connected with screw mandrel, described screw mandrel with for driving the elevating mechanism 7 that thermostable fluorine glue sealing-plug moves or moves down to be connected; Described screw mandrel top and thermostable fluorine glue are provided with gravity sensor 5 between sealing 8, the sidewall of gel container 2 is respectively arranged with the first temperature sensor 3, second temperature sensor 6, described gravity sensor 5, first temperature sensor 3, second temperature sensor 6, elevating mechanism 7 are all connected with control system, the sidewall of gel container 2 are provided with air release, zone of heating and attemperator 4.
The ability meter of high temperature leak stopping gel provided by the invention, can evaluate the temperature resistance of leak stopping gel, becomes colloidality, sticky wall, swelling property and pressure-bearing property.
Further, described clamp flange 9 is provided with tensimeter 1.Described zone of heating and attemperator adopt tracklayer heater to make thermal source, are equipped with insulation material and shell.The safe pressure of described air release is 0.3Mpa, exceedes this pressure releasing pressure automatically.The range ability of described first temperature sensor 3, second temperature sensor 6 is 0 ~ 300 DEG C, and measuring accuracy is 0.1 DEG C, and material is stainless steel.
Described air release is on the sidewall of container, and its safe pressure is 0.3Mpa, exceedes this pressure and gets final product pressure release, ensures safety; Described gel container 2 is of a size of internal diameter 7in, high 100cm.Described heating and attemperator 4 make thermal source with tracklayer heater, are equipped with insulation material and shell, maximum operating temperature 750 DEG C.Described gravity sensor 5 maximum range is the LOAD CELLS of 2t.Elevating mechanism 7 adopts square worm gear screw structure, and lifting is relatively more steady, and rising or falling speed can be arranged, and driver selects servomotor to prepare.Described thermostable fluorine glue sealing-plug 8 can be high temperature resistant, with inner chamber body close contact when ensureing to completely cut off temperature.The inner chamber body of described gel container 2 adopts SUS304 stainless steel to make, and the outside heater strip that adopts heats, and most external is incubated, and adopts insulation material of good performance.
Embodiment 1:
This example have rated the gel bearing capacity at 140 DEG C.
1. open opening of device button, open clamp flange 9, in gel container 2, inject the gel solution prepared.Seal clamp flange 9, close air release.It is 140 DEG C by the heating-up temperature of the zone of heating of set-up of control system gel container 2;
2. monitored the temperature of colloid in gel container 2 by the first temperature sensor 3, second temperature sensor 6, observe heat time and actual measurement heating-up temperature by control system;
3., after reaching the heat time, open air release venting, prevent internal gas back pressure from affecting experimental result and prevent experimenter from being burnt by high-temperature gas;
4. open elevating mechanism 7 by control system, the screw mandrel be connected with elevating mechanism 7 starts to rise, and starts to monitor the pressure data that gravity sensor 5 transmits, and automatically generate about pressure, the time dependent curve of temperature by controller by control system; Observe pressure---the time curve of gel, reading when force value reaches maximum, is the maximum pressure-bearing value of colloid;
5. after obtaining reading, copy experimental data, then declined by elevating mechanism by control system from instrument, final taking-up thermostable fluorine glue sealing-plug 8, discharges colloid.
Embodiment 2:
Under this instance analysis 150 DEG C of conditions, gel stucks out one's tongue length, tests its sticky wall.
1. open opening of device button, open clamp flange 9, in gel container 2, inject the gel solution prepared.Seal clamp flange 9, close air release.It is 150 DEG C by the heating-up temperature of set-up of control system gel;
2. the temperature of gel container 2 inner chamber body colloid is monitored by the first temperature sensor 3, second temperature sensor 6.Heat time and actual measurement heating-up temperature is observed by control system;
3., after reaching the heat time, open air release venting, prevent internal gas back pressure from affecting experimental result and prevent experimenter from being burnt by high-temperature gas;
4. pointing device X button, closing device.After cooling, control elevating mechanism by control system and decline, final take out thermostable fluorine glue sealing-plug 8, by the length record L1 of stucking out one's tongue of kind of calliper colloid;
5. after data acquisition terminates, open clamp flange 9 at container 2 top, from top pressing gel, bottom gel container 2, discharge colloid.(gel is discharged bottom container 2, and the length that stucks out one's tongue is the length measuring the sagging rear top of gel from the basal surface of container bottom)
Example 3
This example have rated in gel 150 DEG C heating 10h process, the bearing resistance change of gel (measure gel bearing resistance over time, sign be pressure-bearing over time).
1. open opening of device button, open clamp flange 9, in gel container 2, inject the gel solution prepared.Seal clamp flange 9, close air release.It is 150 DEG C by the heating-up temperature of set-up of control system gel;
2. the temperature of gel container 2 inner chamber body colloid is monitored by the first temperature sensor 3, second temperature sensor 6.Heat time and actual measurement heating-up temperature is observed by control system;
3., after reaching the heat time, open air release venting, prevent internal gas back pressure from affecting experimental result and prevent experimenter from being burnt by high-temperature gas;
4. after heating 1h, control elevating mechanism by control system and rise, the pressure data that the gravity sensor 5 that the screw mandrel that then acquisition is connected with elevating mechanism is arranged transmits, and automatically generate about pressure, temperature data; Observe pressure---time curve, reading when force value reaches maximum, be heating 1h after colloid pressure-bearing value P1;
5. repeat step 3. ~ 4., test following 2h ~ 10h gel pressure-bearing numerical value P2 ~ P10 of each hour respectively.After obtaining data, arrange, analyze pressure-bearing numerical value situation of change in time.
6. control elevating mechanism 7 by control system to decline, take out thermostable fluorine glue sealing-plug 8, discharge colloid.
Embodiment 4:
This example have rated gel swell increment test at 160 DEG C.
1. open opening of device button, open clamp flange 9, in gel container 2, inject the gel solution prepared.With kind of calliper liquid level distance gel container 2 distance from top, and record L1;
2. seal clamp flange 9, close air release.Controlling gel heating-up temperature by control system is 160 DEG C;
3. the temperature of gel container 2 inner chamber body colloid is monitored by the first temperature sensor 3, second temperature sensor 6.Heat time and actual measurement heating-up temperature is observed by control system;
4., after reaching the heat time, open air release venting, prevent internal high temperature gas to burn experimenter;
5. pointing device X button, closing device.After gel cooling, open top clamp flange 9, again measure rear glue face of expanding to gel container 2 distance from top with slide calliper rule, and record L2;
6. obtain the rising distance in container 2 in colloid face, and calculate colloid expander accumulated amount V1 by the diameter of gel container 2;
7. after experiment terminates, control elevating mechanism by control system and decline, then take out thermostable fluorine glue sealing-plug 8, discharge colloid.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. a high temperature leak stopping gelling performance tester, it is characterized in that, comprise the gel container (2) for storing colloid, the top of described gel container (2) is provided with clamp flange (9), bottom is provided with the thermostable fluorine glue sealing-plug (8) with gel container (2) inwall close contact, and colloid is sealed in described gel container (2) by clamp flange (9) and thermostable fluorine glue sealing-plug (8), the bottom vertical of described thermostable fluorine glue sealing-plug (8) is connected with screw mandrel, described screw mandrel with for driving the elevating mechanism (7) that thermostable fluorine glue sealing-plug moves or moves down to be connected, gravity sensor (5) is provided with between described screw mandrel top and thermostable fluorine glue sealing-plug (8), the sidewall of gel container (2) is respectively arranged with the first temperature sensor (3), second temperature sensor (6), described gravity sensor (5), first temperature sensor (3), second temperature sensor (6), elevating mechanism (7) is all connected with control system, the sidewall of gel container (2) is provided with air release, zone of heating and attemperator (4), elevating mechanism (7) adopts square worm gear screw structure, described gravity sensor (5) maximum range is the LOAD CELLS of 2t.
2. high temperature leak stopping gelling performance tester according to claim 1, is characterized in that, described clamp flange (9) is provided with tensimeter (1).
3. high temperature leak stopping gelling performance tester according to claim 1, is characterized in that, described zone of heating and attemperator adopt tracklayer heater to make thermal source, are equipped with insulation material and shell.
4. high temperature leak stopping gelling performance tester according to claim 1, it is characterized in that, the safe pressure of described air release is 0.3Mpa, exceedes this pressure releasing pressure automatically.
5. high temperature leak stopping gelling performance tester according to claim 1, it is characterized in that, the range ability of described first temperature sensor (3), the second temperature sensor (6) is 0 ~ 300 DEG C, and measuring accuracy is 0.1 DEG C, and material is stainless steel.
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Cited By (1)
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| CN106153677B (en) * | 2015-04-15 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of anti-dilution capacity evaluating apparatus of leak stopping gel and method |
| CN106501127B (en) * | 2016-10-17 | 2019-04-12 | 大港油田集团有限责任公司 | Profile control gel evaluation of dynamic method and device |
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| CN113670804A (en) * | 2021-08-20 | 2021-11-19 | 中海石油(中国)有限公司湛江分公司 | Device and method for evaluating tolerance of jelly natural gas in high-temperature and high-pressure environment |
| CN113777028B (en) * | 2021-11-11 | 2022-01-18 | 成都理工大学 | Device and method for measuring adhesive strength between gel plugging material and rock wall surface |
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