CN102818881B - High-density oil testing work liquid sedimentation stability test device and method - Google Patents
High-density oil testing work liquid sedimentation stability test device and method Download PDFInfo
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- CN102818881B CN102818881B CN201210299652.0A CN201210299652A CN102818881B CN 102818881 B CN102818881 B CN 102818881B CN 201210299652 A CN201210299652 A CN 201210299652A CN 102818881 B CN102818881 B CN 102818881B
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Abstract
The invention relates to a high-density oil testing work liquid sedimentation stability test device and a high-density oil testing work liquid sedimentation stability test method. The device comprises a high-temperature aging tank, pressure sensing test equipment and a slide shaft support frame, wherein the slide shaft support frame comprises a horizontally arranged test platform and a slide rod arranged in a direction vertical to the test platform, the pressure sensing test equipment comprises a probe, a pressure sensor, a sensor display screen, a motor, a case and an electric control box, the motor, the electric control box, the sensor display screen and the pressure sensor are fixedly arranged on the case, the pressure sensor is connected with the sensor display screen, the pressure sensor is fixed with the slide rod, the probe is vertically arranged under the pressure sensor, the motor is connected with the slide rod, and the high-temperature aging tank is arranged on the test platform. The invention also provides the test method adopting the device. The device adopts the pressure sensor and can quantificationally simulate and test the sedimentation stability of oil testing work liquid in the long-time high-temperature still state, and more accurate reference is provided for the in-site operation selection of oil testing work liquid types.
Description
Technical field
The present invention relates to a kind of proving installation and the method for evaluating the sedimentation stability of high density formation testing working fluid, belong to oil liquid testing technical field.
Background technology
Along with the exploratory development of oil marches to deep layer, ultra-deep layer, need to bore deeper and deeper ultra deep well, the ultra deep well finishing drilling well depth of current China is generally 6500-8000 rice, and formation testing working fluid density is generally greater than 1.8g/cm
3, bottom temperature reaches more than 150 DEG C, and the gap of oil pipe and the borehole wall or sleeve pipe is little, when using the tubing string formation testing of many formation testings with packer, if formation testing working fluid generation sedimentation, packer easily occurs simultaneously setting.
On-the-spot normal employing well slurry performance is direct as formation testing working fluid after improving, the formation testing liquid converted by drilling fluid generally comprises a large amount of bentonitic clay, conventional barite weighting agent, polymkeric substance, sulfonated phenol formaldehyde resin, lost circulation additive, oil layer protective agent, lubricant etc., under long-term (12-20 days) high temperature stationary state, easy generation low-density solid solidification and high density solid phase precipitation phenomenon, the above formation testing tubing string of packer is caused to be buried, card formation testing packer and tubing string are one of situations that in oil test operation, accident risk is maximum, therefore, the High Temperature High Pressure down-hole condition of ultra deep well requires harsher to the sedimentation stability of formation testing liquid.
In current ultra deep well oil test operation to the evaluation of high density formation testing working fluid sedimentation stability mainly adopt by static for formation testing working fluid high temperature aging after, the qualitative mode heuristiced of glass bar is adopted to the sediment be deposited at the bottom of tank and solidfied material, the defect of which is poor accuracy, quantitative evaluation can not sink real degree, referential is poor, and during cannot giving oil test operation, whether precipitation and multiviscosisty material cause card to formation testing tubing string provides reference more accurately.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of device and method of quantitative evaluation high density formation testing working fluid high temperature sedimentary stability, simulation oil test operation on-the-spot high density formation testing working fluid high temperature static aging after, carry out pin and enter the heavy real Tachistoscope of detection, record tactile base pressure force value by pressure transducer, obtain heavy real degree evaluation.
For achieving the above object, the invention provides a kind of high density formation testing working fluid settlement stability system safety testing device, it comprises: high temperature ageing tank, pressure sensing testing apparatus and slide shaft support frame, wherein,
The slide bar that slide shaft support frame comprises horizontally disposed test platform and arranges perpendicular to this test platform;
Pressure sensing testing apparatus comprises probe, pressure transducer, sensor display screen, motor, shell and electric cabinet, wherein, motor, electric cabinet, sensor display screen and pressure transducer are fixed on shell, pressure transducer is connected with sensor display screen, pressure transducer and slide bar are fixed together, probe is vertically installed in the below of pressure transducer, motor is connected with slide bar, move up and down for controlling slide bar, under the drive of slide bar, pressure transducer and probe also can move up and down, and probe can be reduced to the inside of electric cabinet;
High temperature ageing tank is located on test platform.
In above-mentioned proving installation provided by the present invention, support is for supporting whole device; High temperature ageing tank is used for splendid attire high density formation testing working fluid to be detected, and carries out high temperature ageing; Probe is used for detecting the high density formation testing working fluid in high temperature ageing tank, when detecting, probe is positioned at high temperature ageing tank, and can upper and lower motion under the drive of motor and slide bar, thus realizes the operation of putting into high temperature ageing tank and taking out from high temperature ageing tank; Pressure transducer is for measuring force value and the frictional force data of high density formation testing working fluid, it can be connected with sensor display screen by cable, the numerical value (sensor display screen is by the outward opening circle display numerical value on shell) detected is shown by sensor display screen, and, pressure transducer and slide bar are fixed together, to move up and down under the drive of slide bar, thus probe is driven to move up and down; Sensor display screen can be arranged in electric cabinet, and people can be able to be seen by arranging form at electric cabinet; Shell is for the protection of the cable etc. of pressure transducer, sensor display screen, electric cabinet and connection, and it can adopt monoblock type steel casing.
In above-specified high density formation testing working fluid settlement stability system safety testing device provided by the invention, preferably, pressure sensing testing apparatus also comprises a locating sleeve, and this locating sleeve is located at the top of probe, and is connected with the external tapping of pressure transducer.By arranging this locating sleeve, can ensure that probe keeps vertical when carrying out upper and lower uniform motion.
In above-specified high density formation testing working fluid settlement stability system safety testing device provided by the invention, preferably, probe is conical, (probe can be provided with spiral to arrange as shown in Figure 1, as the part of the elongate rectangular display in Fig. 1, to ensure reliablely and stablely to be fixed and to test).More preferably, the diameter of above-mentioned probe is 10 millimeters, and weight is 10-20 gram.
In above-specified high density formation testing working fluid settlement stability system safety testing device provided by the invention, preferably, the range of pressure transducer is 0-50N, and pressure block weight is 500-700 gram.
In above-specified high density formation testing working fluid settlement stability system safety testing device provided by the invention, the material of high temperature ageing tank should be identical with the high temperature ageing tank used in API high temp roller furnace, to simulate tested high density formation testing working fluid better in long-time high-temperature stationary state, preferably, the material of high temperature ageing tank is 316 stainless steels, the bottom surface external diameter of this high temperature ageing tank is 10cm, and height is 25cm, and internal diameter is 6.5cm.This high temperature ageing tank can work more than 72 hours No leakage under 250 DEG C of environment.
Present invention also offers a kind of high density formation testing working fluid sedimentation stability method of testing, it adopts above-specified high density formation testing working fluid settlement stability system safety testing device to carry out the method for testing, and comprises the following steps:
By high density formation testing working fluid as in high temperature ageing tank, and require according to site operation the aging 12-360 hour of ageing oven high temperature ageing tank being placed in simulation downhole temperature, take out and be placed on test platform;
Probe is at the uniform velocity put into high temperature ageing tank, after probe touches the end, data shown by read sensor display screen, as tactile base pressure force value, test out the heavy real degree of the static rear formation testing working fluid of long-time high temperature, touch the more severe of the larger namely heavy reality of base pressure force value larger explanation friction.
In said method provided by the invention, preferably, can also comprise the step of the heavy real homogeneity of test, it comprises: when probe at the uniform velocity being put into high temperature ageing tank, and the data when contacting the liquid level of high density formation testing working fluid shown by read sensor display screen are as putting into initial value;
After probe touches the end and reads data, at the uniform velocity be pulled upwardly probe, data in pull-up process shown by read sensor display screen, wherein, data when starting pull-up shown by read sensor display screen are as pull-up initial value, stop pull-up when probe leaves liquid level, the data shown by read sensor display screen are as pull-up stop value.According to the heavy real homogeneity putting into initial value and pull-up stop value, difference between pull-up initial value and tactile base pressure force value can judge working fluid, difference is less, illustrates that homogeneity is better.
In said method provided by the invention, preferably, to same high density formation testing working fluid, four different measurement points are selected to measure, wherein, a measurement point is the center of described high temperature ageing tank, the line of other three measurement points forms an equilateral triangle, and this equilateral leg-of-mutton length of side is 50 millimeters, the center superposition of its center and high temperature ageing tank, as shown in Figure 4.
In said method provided by the invention, put into probe and be controlled as 0.02-0.04 meter per second with the speed being pulled upwardly probe.
High density formation testing working fluid settlement stability system safety testing device provided by the invention adopts pressure transducer, quantitative simulation test out formation testing working fluid long-time high-temperature static time sedimentation stability, than adopting glass rod to insert the qualitative test of working fluid at present, for site work selects formation testing working fluid type to provide reference more accurately.High density formation testing working fluid settlement stability system safety testing device provided by the invention can adopt global design structure, test result is reproducible, stable, and data are reliable, easy and safe to operate, be particularly useful for the ultra deep well high density formation testing working fluid that the appraisal cycle is long, solid load is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of probe of the present invention;
The structural representation of the high density formation testing working fluid settlement stability system safety testing device that Fig. 2 provides for embodiment 1;
The members annexation schematic diagram of the device that Fig. 3 provides for embodiment 1;
Fig. 4 is measurement point selection mode schematic diagram.
Main Reference label declaration:
Test platform 1 slide bar 2 probe 3 locating sleeve 4 pressure transducer 5 sensor display screen 6 motor 7 shell 8 high temperature ageing tank 9 cable 10 central point 11 first: 12 second point 13 thirdly 14
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of high density formation testing working fluid settlement stability system safety testing device, its structure as shown in Figure 2.
The high density formation testing working fluid settlement stability system safety testing device that the present embodiment provides, it comprises high temperature ageing tank 9, pressure sensing testing apparatus and slide shaft support frame, wherein,
The slide bar 2 that slide shaft support frame comprises horizontally disposed test platform 1 and arranges perpendicular to this test platform;
Pressure sensing testing apparatus comprises probe 3 (its structure as shown in Figure 1), locating sleeve 4, pressure transducer 5, sensor display screen 6, motor 7, electric cabinet and shell 8, wherein, motor 7, electric cabinet, sensor display screen 6 and pressure transducer 5 are located in shell 8, pressure transducer 5 is connected by cable with sensor display screen 6, probe 3 is vertically installed in the below of pressure transducer 5 and is connected (as shown in Figure 3) by cable 10 with pressure transducer 5, motor 7 is connected with slide bar 2, moves up and down for controlling slide bar 2; Locating sleeve 4 is located at the top of probe 3, and is connected with the external tapping of pressure transducer 5; High temperature ageing tank 9 is located on test platform 1.
The present embodiment additionally provides a kind of high density formation testing working fluid sedimentation stability method of testing adopting above-mentioned proving installation, and it comprises the following steps:
By high density formation testing working fluid as in high temperature ageing tank 9, and high temperature ageing tank 9 is placed in the ageing oven aging 360 hours cun of simulation downhole temperature, takes out and be placed on test platform 1, open cover and fix;
After high temperature ageing tank 9 cools naturally, open motor 7 and probe 3 is at the uniform velocity put into high temperature ageing tank 9 with the speed of 0.02-0.04 meter per second, data shown by read sensor display screen 6 are started as putting into initial value when contacting the liquid level of high density formation testing working fluid, after probe 3 touches the end, the data shown by read sensor display screen 6 are as tactile bottom pressure; Then probe 3 is at the uniform velocity pulled upwardly, frictional force data is read in pull-up process, data when starting pull-up shown by read sensor display screen are as pull-up initial value, and stop pull-up when probe leaves liquid level, the data shown by read sensor display screen are as pull-up stop value;
In testing process, circular liquid level respectively chooses three points (1: 12 according at nearly tank skin place, second point 13, thirdly 14), Zai Guan center liquid level chooses a reading point (central point 11), amount to four pins and enter measurement point (as shown in Figure 4), in Fig. 4, excircle frame represents the outer wall of high temperature ageing tank 9, central point 11 is positioned at the center of high temperature ageing tank 9, 1: 12, second point 13, thirdly 14 is three angular vertexs of equilateral triangle (length of side 50 millimeters), from central point 11 during measurement, 1: 12, second point 13, thirdly 14 measure respectively.
Test result:
At present, domestic ultra deep well formation testing working fluid used is mainly that drilling fluid directly transforms, the formation testing working fluid three kinds of organic salt formation testing liquid and ultrafine powder accentuation techniques, and wherein organic salt formation testing liquid is that liquid increases the weight of, Solid Free content, therefore there is not sedimentation risk.
Adopt the device that provides of the present embodiment to carry out contrast test to the formation testing working fluid (2#) that Tarim Oilfield increases the weight of for sulfonated drilling fluid transformation liquid (1#) and the ultrafine powder of ultra deep well formation testing respectively according to the method described above, fluid conversion working fluid density is 1.55g/cm
3, the latter's density is 2.10g/cm
3; Two samples after static aging 15 days, adopt the fast rotational viscosimeter of API six to carry out rheological parameter test at 160 DEG C of high temperature, and test result, in table 1, adopts each data of device to test that the present embodiment provides, as shown in table 2 and table 3.
The rheological data of table 1 two kinds of working fluids
Remarks: AV: apparent viscosity, unit mPas; PV: plastic viscosity, unit mPas; YP: yield value, unit Pa; τ
1/ τ
2: ingress and egress, unit Pa.
The test data of table 2 two kinds of working fluids
Namely the heavy real degree of table 3 two kinds of working fluids touches base pressure force value test data
| Condition determination | Central point (N) | First point (N) | Second point (N) | Thirdly (N) | Mean value (N) | |
| 1# | 160 DEG C/15 days | 0.99 | 0.73 | 0.63 | 0.79 | 0.79 |
| 2# | 160 DEG C/15 days | 0.98 | 0.72 | 0.62 | 0.72 | 0.76 |
As can be seen from above experimental result, at 160 DEG C after static aging 15 days, density is 1.55g/cm
3scene mud transform formation testing working fluid and density is 2.10g/cm
3ultrafine powder formation testing working fluid apparent viscosity and plastic viscosity difference little, the first egress of ultrafine powder working fluid is larger.The proving installation adopting the present embodiment to provide and method of testing are when testing heavy real degree, in density difference 30% situation, it is less that ultrafine powder working fluid pin enters the pressure at the tactile end, friction force is also less, show that formation testing working fluid that ultrafine powder increases the weight of sinks real degree and is significantly less than on-the-spot conversion formation testing working fluid, this result meets the architectural feature of two kinds of working fluids, shows that the proving installation that the present embodiment provides and method of testing have good operability.
Claims (8)
1. a high density formation testing working fluid settlement stability system safety testing device, it comprises: high temperature ageing tank, pressure sensing testing apparatus and slide shaft support frame, wherein,
The slide bar that described slide shaft support frame comprises horizontally disposed test platform and arranges perpendicular to this test platform;
Described pressure sensing testing apparatus comprises probe, pressure transducer, sensor display screen, motor, shell and electric cabinet, wherein, described motor, electric cabinet, sensor display screen and pressure transducer are fixed on described shell, described pressure transducer is connected with described sensor display screen, described pressure transducer and described slide bar are fixed together, described probe is vertically installed in the below of described pressure transducer, described motor is connected with described slide bar, move up and down for controlling described slide bar, described probe is conical, the diameter of described probe is 10 millimeters, weight is 10-20 gram,
Described high temperature ageing tank is located on described test platform.
2. high density formation testing working fluid settlement stability system safety testing device according to claim 1, wherein, described pressure sensing testing apparatus also comprises a locating sleeve, and this locating sleeve is located at the top of described probe, and is connected with the external tapping of described pressure transducer.
3. high density formation testing working fluid settlement stability system safety testing device according to claim 1, wherein, the range of described pressure transducer is 0-50N, and pressure block weight is 500-700 gram.
4. high density formation testing working fluid settlement stability system safety testing device according to claim 1, wherein, the material of described high temperature ageing tank is 316 stainless steels, and the bottom surface external diameter of this high temperature ageing tank is 10cm, and height is 25cm, and internal diameter is 6.5cm.
5. a high density formation testing working fluid sedimentation stability method of testing, it adopts the high density formation testing working fluid settlement stability system safety testing device described in any one of claim 1-4 to carry out the method for testing, and comprises the following steps:
High density formation testing working fluid is placed in high temperature ageing tank, and high temperature ageing tank is placed in the aging 12-360 hour of ageing oven of simulation downhole temperature, take out and be placed on test platform;
Probe is at the uniform velocity put into high temperature ageing tank, and after probe touches the end, the data shown by read sensor display screen, as tactile base pressure force value, test out the heavy real degree of the static rear formation testing working fluid of long-time high temperature.
6. method according to claim 5, wherein, when probe at the uniform velocity being put into high temperature ageing tank, the data when contacting the liquid level of high density formation testing working fluid shown by read sensor display screen are as putting into initial value;
After probe touches the end and reads data, at the uniform velocity be pulled upwardly probe, data in pull-up process shown by read sensor display screen, wherein, data when starting pull-up shown by read sensor display screen are as pull-up initial value, stop pull-up when probe leaves liquid level, the data shown by read sensor display screen are as pull-up stop value.
7. the method according to claim 5 or 6, wherein, to same high density formation testing working fluid, select four different measurement points to measure, wherein, a measurement point is the center of described high temperature ageing tank, the line of other three measurement points forms an equilateral triangle, further, this equilateral leg-of-mutton length of side is 50 millimeters, the center superposition of its center and described high temperature ageing tank.
8. the method according to claim 5 or 6, wherein, puts into probe and is respectively 0.02-0.04 meter per second with the speed being pulled upwardly probe.
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| CN2748917Y (en) * | 2004-09-30 | 2005-12-28 | 湖北汉科新技术股份有限公司 | High-temperature and high-pressure well wall stability tester |
| CN2783315Y (en) * | 2005-03-03 | 2006-05-24 | 华北石油管理局钻井工艺研究院 | Digital display rotary viscometer |
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| CN102435538A (en) * | 2011-12-01 | 2012-05-02 | 西南石油大学 | Suspension stability testing device and method |
| CN202814944U (en) * | 2012-08-21 | 2013-03-20 | 中国石油大学(北京) | Device for testing sedimentation stability of high-density well testing work liquid |
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