CN103217362B - Drilling fluid rheological property measurement device and measurement method - Google Patents
Drilling fluid rheological property measurement device and measurement method Download PDFInfo
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- CN103217362B CN103217362B CN201310082575.8A CN201310082575A CN103217362B CN 103217362 B CN103217362 B CN 103217362B CN 201310082575 A CN201310082575 A CN 201310082575A CN 103217362 B CN103217362 B CN 103217362B
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Abstract
The invention relates to a drilling fluid rheological property measurement device and a measurement method. The device is characterized by comprising an autoclave body, a rotating cylinder, a combined kettle cover and a measuring element. The autoclave body comprises a cylinder body with a turbocharged inlet; a refrigeration pipe communicating with an outside refrigeration machine is arranged in the cylinder body; an undersurface of a baseboard of the cylinder body is provided with a lower magnetic ring driven by a motor through a belt wheel, and a top surface is provided with an upper magnetic ring rotating with the lower magnetic ring; the rotating cylinder is rotatably supported in the autoclave body, and the bottom of the rotating cylinder is connected with the lower magnetic ring; the combined kettle cover comprises an inner kettle cover and an outer kettle cover, and the inner kettle cover is provided with a top cover, a clapboard and a sealing plate; the upper magnetic ring is arranged between the top cover and the clapboard, and the lower magnetic ring is arranged between the clapboard and the sealing plate; the measuring element comprises a torque sensor and a measuring body, and an input shaft of the torque sensor is connected with the upper magnetic ring in the combined kettle cover; and the measuring body is inserted in the rotating cylinder, and an output shaft of the measuring body is connected with the lower magnetic ring in the combined kettle cover. The invention can measure the rheological property of drilling fluid under different pressure and temperature, and can be widely used in the determination process of rheological properties of drilling fluid.
Description
Technical field
The present invention relates to a kind of liquid stream sex change measurement mechanism and measuring method, the drilling fluid rheology measurement mechanism being particularly applicable under different Temperature-pressure Conditions, drilling fluid rheology to be measured about a kind of and measuring method.
Background technology
At present, in ocean deepwater drilling process, all can run into the situation of cryogenic high pressure, and the impact of temperature and pressure on the rheological of drilling fluid is larger.In order to better meet ocean deepwater drilling requirement, need to measure the rheological of drilling fluid under the condition of cryogenic high pressure, so that the rheological of drilling fluid in cryogenic high pressure situation when understanding ocean deepwater drilling more accurately.Existing rheology measurement method is all adopt the rotational viscosimeter of inside and outside cartridge type to carry out the mensuration of drilling fluid rheology.Conventional viscosity meter adopts the structure of synchronous machine drives, mechanical gear shift speed change, can only measure the rheological of drilling fluid under six fixed shear speed, shear rate required when can not freely select to measure.This viscosity meter can only measure the rheological under normal temperature and pressure conditions in addition, if the rheological under low temperature or hot conditions need be measured, measure again after also needing separately cooling or heating, not only troublesome poeration, also Yin Wendu non-constant can cause that data error is large, poor repeatability.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of easy and simple to handle, measuring accuracy is high, and the drilling fluid rheology measurement mechanism of drilling fluid rheology and measuring method under different Temperature-pressure Conditions can be measured.
For achieving the above object, the present invention takes following technical scheme: a kind of drilling fluid rheology measurement mechanism and measuring method, is characterized in that: it comprises autoclave body, rotating cylinder, combination kettle cover, measuring sensor and drive motor; Described autoclave body comprises a cylindrical shell, is provided with refrigerator pipes in described cylindrical shell, and the two ends of described refrigerator pipes pass described cylindrical shell and are communicated with a refrigeration machine, and on described cylindrical shell, radial direction is provided with a boost port be communicated with supercharge pump; The bottom of described cylindrical shell is provided with a base plate, and the bottom surface of described base plate is fixedly connected with a pillar, described pillar is rotationally connected a belt pulley driven by described drive motor; The top of described belt pulley is provided with the magnet ring once rotated with it, and the end face of described base plate is provided with the upper magnetic ring of magneticaction with described lower magnet ring rotation; Described rotating cylinder is connected in described autoclave body by bearing, and the bottom of described rotating cylinder is fixedly connected with described lower magnet ring; Described combination kettle cover comprise be sealedly connected on described autoclave body top one in kettle cover, the middle part of described interior kettle cover is provided with a dividing plate, and the bottom of described interior kettle cover connects a shrouding by internal thread; The outer steps of described interior kettle cover is provided with an outer kettle cover, the bottom of described outer kettle cover is connected on described autoclave body by internal thread; Described interior kettle cover top is provided with a top cover, and it is outside that described top cover bottom is connected to described interior kettle cover; Be provided with a upper magnetic ring between described top cover and described dividing plate, between described dividing plate and described shrouding, be provided with magnet ring; Described measuring sensor comprises a torque sensor and and measures body, and described torque sensor is arranged on described top cover, and its input shaft, and to be fixedly connected with the upper magnetic ring inwall in described combination kettle cover by bearings on described top cover and dividing plate; Described measurement body is plugged in described rotating cylinder, and its output shaft rotation is supported on described shrouding and dividing plate, and is fixedly connected with the lower magnet ring inwall in described combination kettle cover.
The top of described rotating cylinder is provided with the step-like iner ledge of the upper big, lower small that facilitates drilling fluid to inject.
Described interior kettle cover bottom is connected in described autoclave body by external thread, is provided with packing washer between the bench floor of described interior kettle cover and described cylindrical shell end face.
Described interior kettle cover bottom arranges some O-ring seals, and described interior kettle cover and described autoclave body are sealed connected together by O-ring seal, is provided with packing washer between the bench floor of described interior kettle cover and described autoclave body end face.
The measuring method of above-mentioned a kind of drilling fluid rheology measurement mechanism, it comprises the following steps: 1) open combination kettle cover, and related taking-up measuring sensor, injects drilling fluid to be measured from the top of rotating cylinder, loaded in rotating cylinder by measuring sensor, and tightens combination kettle cover; 2) before the test begins, according to test request, the Temperature-pressure Conditions of drilling fluid to be measured in rotating cylinder is regulated; 3) after drilling fluid to be measured reaches the Temperature-pressure Conditions of test request, open drive motor, rotated, under magneticaction by the lower magnet ring in belt pulley energizes high-pressure kettle, upper magnetic ring in autoclave body can rotate together along with lower magnet ring, thus driven rotary cylinder rotates; Drilling fluid in rotating cylinder is while rotating together along with rotating cylinder, can be driven by the viscous effect of drilling fluid and measure body rotation, the rotation of measuring body can drive the lower magnet ring in combination kettle cover to rotate by its output shaft, under magneticaction, upper magnetic ring in combination kettle cover can rotate together along with lower magnet ring, and the torsion information that input shaft is responded to just can be inputed to torque sensor by the input shaft connecting the torque sensor of upper magnetic ring; 4) control system by being connected with torque sensor is passed through and is calculated, and just can draw the rheological parameter of drilling fluid to be measured.
Described step 2) in adopt one of following method about the regulative mode of Temperature-pressure Conditions: when 1. measuring the rheological of drilling fluid under cryogenic high pressure condition, the refrigerator pipes arranged in autoclave body is communicated with refrigeration machine, refrigerating fluid is injected to reduce the temperature of drilling fluid to be measured to the refrigerator pipes circulation in autoclave body by refrigeration machine, boost port on autoclave body is connected with supercharge pump simultaneously, is pressurizeed with the pressure increasing drilling fluid to be measured to autoclave body by supercharge pump; When 2. measuring the rheological of drilling fluid under high-temperature and high-pressure conditions, in autoclave body periphery, one high-temperature heating equipment is set, drilling fluid to be measured to be heated to the high-temperature temperature set, boost port on autoclave body is connected with supercharge pump simultaneously, pressurizes to autoclave body 1 pressure increasing drilling fluid to be measured by supercharge pump.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is owing to being provided with a belt pulley driven by drive motor in the bottom of autoclave body, belt pulley top is connected to a lower magnet ring rotated with it, the upper magnetic ring rotated with lower magnet ring by magneticaction is provided with at the plate top surface of autoclave body, upper magnetic ring inwall is connected to a rotary body, opening drive motor drives lower magnet ring to rotate by belt pulley, under magneticaction, upper magnetic ring in autoclave body can rotate together along with lower magnet ring, thus driven rotary cylinder rotates, therefore drive part design of the present invention is ingenious, and it is simple to operate.2, the present invention is owing to being provided with a combination kettle cover at autoclave body top, magnet ring and a upper magnetic ring rotated with lower magnet ring by magneticaction is provided with in combination kettle cover, the measurement body be plugged in rotating cylinder is supported at combination kettle cover lower rotational, and the output shaft measuring body is fixedly connected with lower magnet ring inwall, a torque sensor is provided with at combination kettle cover top, its input shaft is rotatably supported in combination kettle cover top, and be fixedly connected with upper magnetic ring inwall, drilling fluid in rotating cylinder is while rotating together along with rotating cylinder, can promote to measure body drives the lower magnet ring in combination kettle cover to rotate, thus drive lower magnet ring to rotate, the torsion information of its input shaft measured by torque sensor, and the rheological parameter of drilling fluid to be measured is calculated by control system, therefore measure portion design of the present invention is ingenious, simple to operate, and carry out survey calculation by torque sensor and control system, measuring accuracy is high.3, the present invention is owing to being provided with an import and an outlet in the cylindrical shell radial direction of autoclave body, before starting measurement, import on cylindrical shell is communicated with refrigeration machine or supercharge pump with outlet, the Temperature-pressure Conditions of drilling fluid can be regulated very easily, and at autoclave body outer cladding one heating jacket, just can heat drilling fluid to be measured, therefore the present invention can the Temperature-pressure Conditions of Reality simulation ocean deepwater well, thus measures the rheological parameter of drilling fluid more accurately.The present invention is simple to operate, and accuracy of measurement is high, and the rheological of drilling fluid under different Temperature-pressure Conditions can be measured, it can be widely used in the rheological measurement process of all kinds of drilling fluid.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the present invention includes autoclave body 1, rotating cylinder 2, combination kettle cover 3, measuring sensor 4 and drive motor (not shown).
Autoclave body 1 of the present invention comprises a cylindrical shell 11, cylindrical shell 11 inwall is fixedly connected with the refrigerator pipes (not shown) of a structure in the shape of a spiral, the opening 12 that the two ends of refrigerator pipes are arranged by cylindrical shell 11 bottom stretches out autoclave body, be communicated with liquid back pipe with the feed pipe of a refrigeration machine, and do encapsulation process between opening 12 and refrigerator pipes.The middle part radial direction of cylindrical shell 11 is provided with a boost port 13, and boost port 13 is communicated with a supercharging delivery side of pump by pipeline.The bottom of cylindrical shell 11 is provided with a base plate 14 integrated with it, and the bottom surface of base plate 14 is fixedly connected with a pillar 15, and pillar 15 is rotationally connected a belt pulley driven by drive motor 16 by bearing.Be provided with a lower magnet ring 17 rotated with it at the top of belt pulley 16, the end face of base plate 14 is provided with a upper magnetic ring 18 rotated with lower magnet ring by magneticaction.
Rotating cylinder 2 of the present invention is connected in autoclave body 1 by bearing, and the bottom of rotating cylinder 2 is fixedly connected in lower magnet ring 18.Rotating cylinder 2 top is provided with three grades of step-like iner ledges 21 of upper big, lower small, injects to facilitate drilling fluid.
Combination kettle cover 3 of the present invention comprise be sealedly connected on autoclave body top one in kettle cover 31, the middle part of interior kettle cover 31 is provided with a dividing plate 32 integrated with it, and the bottom of interior kettle cover 31 connects a shrouding 33 by internal thread; The outer steps of interior kettle cover 31 is provided with an outer kettle cover 34, the bottom of outer kettle cover 34 is connected on autoclave body 1 by internal thread; Interior kettle cover 31 top is provided with a top cover 35, and it is outside that top cover 35 bottom is connected to interior kettle cover 31 by internal thread.Between top cover 35 and dividing plate 32, be provided with a upper magnetic ring 36, between dividing plate 32 and shrouding 33, be provided with magnet ring 37.
Measuring sensor 4 of the present invention comprises a torque sensor 41 and and measures body 42, and torque sensor 41 is arranged on top cover 35 top, and its input shaft 43, and to be fixedly connected with upper magnetic ring 36 inwall by bearings on top cover 35 and dividing plate 32.Measuring body 42 is plugged in rotating cylinder 2, and its output shaft 44, and to be fixedly connected with lower magnet ring 37 inwall by bearings on dividing plate 32 and shrouding 33.
Drive motor of the present invention adopts electrodeless variable-speed, can regulate arbitrarily the rotating speed of belt pulley 16, therefore can measure the shear stress under different rotating speeds, obtain the rheological measurement result of drilling fluid more accurately within the scope of 0 ~ 600 turn.
In above-described embodiment, the bottom of interior kettle cover 31 can be connected in autoclave body 1 by external thread; Also some O-ring seals can be set in interior kettle cover 31 bottom, interior kettle cover 31 and cylindrical shell 11 are sealed connected together by O-ring seal.In addition, packing washer is provided with between the bench floor of interior kettle cover 31 and autoclave body 1 end face, to realize being tightly connected.
When using the rheological of apparatus of the present invention to drilling fluid to measure, comprise the following steps:
1) open combination kettle cover 3, related taking-up measuring sensor 4, injects drilling fluid to be measured from the top of rotating cylinder 2, is loaded in rotating cylinder 2 by measuring sensor 4, and tightens combination kettle cover 3;
2) before the test begins, according to test request, the Temperature-pressure Conditions of drilling fluid to be measured in rotating cylinder 2 is regulated:
3) after drilling fluid to be measured reaches the Temperature-pressure Conditions of test request, open drive motor, rotated, under magneticaction by the lower magnet ring 17 in belt pulley 16 energizes high-pressure kettle, upper magnetic ring 18 in autoclave body can rotate together along with lower magnet ring 17, thus driven rotary cylinder 2 rotates; Drilling fluid in rotating cylinder 2 is while rotating together along with rotating cylinder 2, measurement body 42 can be driven to rotate by the viscous effect of drilling fluid, the rotation of measuring body 42 can drive the lower magnet ring 37 in combination kettle cover 3 to rotate by its output shaft 44, under magneticaction, upper magnetic ring 36 in combination kettle cover 3 can rotate together along with lower magnet ring 37, and the torsion information that input shaft 43 just can be responded to by the input shaft 43 connecting the torque sensor 41 of upper magnetic ring 36 inputs to torque sensor 41;
4) by the control system that is connected with torque sensor 41 through conventionally calculation, just can draw the rheological parameter of drilling fluid to be measured.
In said method embodiment, step 2) comprise about the adjustment of Temperature-pressure Conditions:
When 1. needing to measure the rheological of drilling fluid under cryogenic high pressure condition, the import 12 of autoclave body 1 is communicated with refrigeration machine with outlet 13, boost port on autoclave body 1 is connected with supercharge pump, inject refrigerating fluid to reduce the temperature of drilling fluid to be measured by refrigeration machine to the refrigerator pipes circulation in autoclave body 1, pressurize to autoclave body 1 pressure increasing drilling fluid to be measured by supercharge pump simultaneously.
When 2. needing the rheological measuring drilling fluid under high-temperature and high-pressure conditions, in autoclave body 1 periphery, one high-temperature heating equipment is set, drilling fluid to be measured to be heated to the high-temperature temperature set, boost port on autoclave body 1 is connected with supercharge pump simultaneously, pressurizes to autoclave body 1 pressure increasing drilling fluid to be measured by supercharge pump.
Above-mentioned high-temperature heating equipment can be a heating jacket with high temperature circulation liquid state, also can be an electric heater unit.
The various embodiments described above are only for illustration of the present invention, and wherein the structure, connected mode etc. of each parts all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (6)
1. a drilling fluid rheology measurement mechanism, is characterized in that: it comprises autoclave body, rotating cylinder, combination kettle cover, measuring sensor and drive motor;
Described autoclave body comprises a cylindrical shell, is provided with refrigerator pipes in described cylindrical shell, and the two ends of described refrigerator pipes pass described cylindrical shell and are communicated with a refrigeration machine, and on described cylindrical shell, radial direction is provided with a boost port be communicated with supercharge pump; The bottom of described cylindrical shell is provided with a base plate, and the bottom surface of described base plate is fixedly connected with a pillar, described pillar is rotationally connected a belt pulley driven by described drive motor; The top of described belt pulley is provided with the magnet ring once rotated with it, and the end face of described base plate is provided with the upper magnetic ring of magneticaction with described lower magnet ring rotation;
Described rotating cylinder is connected in described autoclave body by bearing, and the bottom of described rotating cylinder is fixedly connected with described upper magnetic ring;
Described combination kettle cover comprise be sealedly connected on described autoclave body top one in kettle cover, the middle part of described interior kettle cover is provided with a dividing plate, and the bottom of described interior kettle cover connects a shrouding by internal thread; The outer steps of described interior kettle cover is provided with an outer kettle cover, the bottom of described outer kettle cover is connected on described autoclave body by internal thread; Described interior kettle cover top is provided with a top cover, and it is outside that described top cover bottom is connected to described interior kettle cover; Be provided with a upper magnetic ring between described top cover and described dividing plate, between described dividing plate and described shrouding, be provided with magnet ring;
Described measuring sensor comprises a torque sensor and and measures body, and described torque sensor is arranged on described top cover, and its input shaft, and to be fixedly connected with the upper magnetic ring inwall in described combination kettle cover by bearings on described top cover and dividing plate; Described measurement body is plugged in described rotating cylinder, and its output shaft rotation is supported on described shrouding and dividing plate, and is fixedly connected with the lower magnet ring inwall in described combination kettle cover.
2. a kind of drilling fluid rheology measurement mechanism as claimed in claim 1, is characterized in that: the top of described rotating cylinder is provided with the step-like iner ledge of the upper big, lower small that facilitates drilling fluid to inject.
3. a kind of drilling fluid rheology measurement mechanism as claimed in claim 1 or 2, is characterized in that: described interior kettle cover bottom is connected in described autoclave body by external thread, is provided with packing washer between the bench floor of described interior kettle cover and described cylindrical shell end face.
4. a kind of drilling fluid rheology measurement mechanism as claimed in claim 1 or 2, it is characterized in that: described interior kettle cover bottom arranges some O-ring seals, described interior kettle cover and described autoclave body are sealed connected together by O-ring seal, are provided with packing washer between the bench floor of described interior kettle cover and described autoclave body end face.
5. use a measuring method for drilling fluid rheology measurement mechanism as described in any one of Claims 1 to 4, it comprises the following steps:
1) open combination kettle cover, related taking-up measuring sensor, injects drilling fluid to be measured from the top of rotating cylinder, is loaded in rotating cylinder by measuring sensor, and tightens combination kettle cover;
2) before the test begins, according to test request, the Temperature-pressure Conditions of drilling fluid to be measured in rotating cylinder is regulated;
3) after drilling fluid to be measured reaches the Temperature-pressure Conditions of test request, open drive motor, rotated, under magneticaction by the lower magnet ring in belt pulley energizes high-pressure kettle, upper magnetic ring in autoclave body can rotate together along with lower magnet ring, thus driven rotary cylinder rotates; Drilling fluid in rotating cylinder is while rotating together along with rotating cylinder, can be driven by the viscous effect of drilling fluid and measure body rotation, the rotation of measuring body can drive the lower magnet ring in combination kettle cover to rotate by its output shaft, under magneticaction, upper magnetic ring in combination kettle cover can rotate together along with lower magnet ring, and the torsion information that input shaft is responded to just can be inputed to torque sensor by the input shaft connecting the torque sensor of upper magnetic ring;
4) control system by being connected with torque sensor is passed through and is calculated, and just can draw the rheological parameter of drilling fluid to be measured.
6. measuring method as claimed in claim 5, is characterized in that: described step 2) in adopt one of following method about the regulative mode of Temperature-pressure Conditions:
When 1. measuring the rheological of drilling fluid under cryogenic high pressure condition, the refrigerator pipes arranged in autoclave body is communicated with refrigeration machine, refrigerating fluid is injected to reduce the temperature of drilling fluid to be measured to the refrigerator pipes circulation in autoclave body by refrigeration machine, boost port on autoclave body is connected with supercharge pump simultaneously, is pressurizeed with the pressure increasing drilling fluid to be measured to autoclave body by supercharge pump;
When 2. measuring the rheological of drilling fluid under high-temperature and high-pressure conditions, in autoclave body periphery, one high-temperature heating equipment is set, drilling fluid to be measured to be heated to the high-temperature temperature set, boost port on autoclave body is connected with supercharge pump simultaneously, is pressurizeed with the pressure increasing drilling fluid to be measured to autoclave body by supercharge pump.
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| CN201310082575.8A CN103217362B (en) | 2013-03-15 | 2013-03-15 | Drilling fluid rheological property measurement device and measurement method |
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| CN201310082575.8A CN103217362B (en) | 2013-03-15 | 2013-03-15 | Drilling fluid rheological property measurement device and measurement method |
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