CN103217362A - 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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- CN103217362A CN103217362A CN2013100825758A CN201310082575A CN103217362A CN 103217362 A CN103217362 A CN 103217362A CN 2013100825758 A CN2013100825758 A CN 2013100825758A CN 201310082575 A CN201310082575 A CN 201310082575A CN 103217362 A CN103217362 A CN 103217362A
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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 flow of liquid sex change measurement mechanism and measuring method, particularly about a kind of drilling fluid rheology measurement mechanism and measuring method of under different temperature and pressure conditions, drilling fluid rheology being measured that be applicable to.
Background technology
At present, in the ocean deepwater drilling process, all can run into the situation of cryogenic high pressure, and temperature and pressure is bigger to the influence of the rheological of drilling fluid.In order to better meet the ocean deepwater drilling requirement, need under the condition of cryogenic high pressure, the rheological to drilling fluid measure, so that the rheological of drilling fluid under the cryogenic high pressure situation when understanding ocean deepwater drilling more accurately.Existing rheology measurement method all is the mensuration that the rotational viscosimeter of cartridge type carries out drilling fluid rheology inside and outside adopting.Viscosity meter commonly used 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, required shear rate in the time of can not freely selecting to measure.This in addition viscosity meter can only be measured the rheological under the normal temperature and pressure conditions, if need to measure the rheological under low temperature or the hot conditions, also need to measure again after cooling separately or the heating, troublesome poeration not only, also can Yin Wendu non-constantly cause that data error is big, poor repeatability.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of easy and simple to handle, measuring accuracy height, and can measure the drilling fluid rheology measurement mechanism and the measuring method of drilling fluid rheology under the different temperature and pressure conditions.
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 the described cylindrical shell, and the two ends of described refrigerator pipes pass described cylindrical shell and are communicated with a refrigeration machine, radially are provided with a boost port that is communicated with supercharge pump on the described cylindrical shell; The bottom of described cylindrical shell is provided with a base plate, the fixedly connected pillar in the bottom surface of described base plate, and a belt pulley by described drive motor drive is rotationally connected on the described pillar; The top of described belt pulley is provided with the magnet ring once with its rotation, and the end face of described base plate is provided with a upper magnetic ring that rotates with described magnet ring down by magneticaction; Described rotating cylinder is connected in the described autoclave body by bearing, the fixedly connected described magnet ring down in the bottom of described rotating cylinder; Described combination kettle cover comprises an interior kettle cover that is sealedly connected on described autoclave body top, and 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 kettle cover is provided with an outer kettle cover in described, and the bottom of described outer kettle cover is connected on the described autoclave body by internal thread; The kettle cover top is provided with a top cover in described, and described top cover bottom is connected described interior kettle cover outside; Be provided with a upper magnetic ring between described top cover and the described dividing plate, be provided with magnet ring between described dividing plate and the described shrouding; Described measuring sensor comprises a torque sensor and a measuring body, and described torque sensor is arranged on the described top cover, and its input shaft, and is fixedlyed connected with the upper magnetic ring inwall in the described combination kettle cover on described top cover and dividing plate by bearings; Described measuring body is plugged in the described rotating cylinder, and its output shaft rotational support and is fixedlyed connected with the following magnet ring inwall in the described combination kettle cover on described shrouding and dividing plate.
The top of described rotating cylinder is provided with the iner ledge of going up big, following small stair shape that makes things convenient for drilling fluid to inject.
The kettle cover bottom is connected in the described autoclave body by external thread in described, is provided with packing washer between the step bottom surface of described interior kettle cover and the described cylindrical shell end face.
The kettle cover bottom is provided with some O-ring seals in described, and described interior kettle cover and described autoclave body are tightly connected together by O-ring seal, is provided with packing washer between the step bottom surface of described interior kettle cover and the described autoclave body end face.
The measuring method of above-mentioned a kind of drilling fluid rheology measurement mechanism, it may further comprise the steps: 1) open the combination kettle cover, related taking-up measuring sensor injects drilling fluid to be measured from the top of rotating cylinder, measuring sensor is packed in the rotating cylinder, and tighten the combination kettle cover; 2) before the test beginning,, the temperature and pressure condition of drilling fluid to be measured in the rotating cylinder is regulated according to test request; 3) after drilling fluid to be measured reaches the temperature and pressure condition of test request, open drive motor, the following magnet ring that drives in the autoclave body by belt pulley rotates, under magneticaction, upper magnetic ring in the autoclave body can rotate together along with following magnet ring, thereby the driven rotary tube rotates; Drilling fluid in the rotating cylinder is when rotating together along with rotating cylinder, can drive measuring body by the viscous effect of drilling fluid rotates, the rotation of measuring body can be rotated by the following magnet ring that its output shaft drives in the combination kettle cover, under magneticaction, upper magnetic ring in the combination kettle cover can rotate together along with following magnet ring, and the input shaft that connects the torque sensor of upper magnetic ring just can input to torque sensor with the information of reversing of input shaft induction; 4) calculate by the control system process that is connected with torque sensor, just can draw the rheological parameter of drilling fluid to be measured.
Described step 2) regulative mode about the temperature and pressure condition in adopts one of following method: when 1. measuring the rheological of drilling fluid under the cryogenic high pressure condition, the refrigerator pipes that is provided with in the autoclave body is communicated with refrigeration machine, inject refrigerating fluid to reduce the temperature of drilling fluid to be measured by the refrigerator pipes circulation of refrigeration machine in autoclave body, simultaneously the boost port on the autoclave body is connected with supercharge pump, pressurizes to increase the pressure of drilling fluid to be measured to autoclave body by supercharge pump; When 2. measuring the rheological of drilling fluid under the high-temperature and high-pressure conditions, in the autoclave body periphery one high-temperature heating equipment is set, drilling fluid to be measured is heated to the high-temperature temperature of setting, simultaneously the boost port on the autoclave body is connected with supercharge pump, pressurizes to increase the pressure of drilling fluid to be measured to autoclave body 1 by supercharge pump.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to be provided with a belt pulley by the drive motor drive in the bottom of autoclave body, the belt pulley top has connected a following magnet ring with its rotation, plate top surface at autoclave body is provided with a upper magnetic ring that rotates with following magnet ring by magneticaction, the upper magnetic ring inwall has connected a rotary body, open drive motor and drive magnet ring rotation down by belt pulley, under magneticaction, upper magnetic ring in the autoclave body can rotate together along with following magnet ring, thereby the driven rotary tube rotates, drive part design therefore of the present invention is ingenious, and simple to operate.2, the present invention makes up kettle cover owing to be provided with one at the autoclave body top, combination is provided with the upper magnetic ring that magnet ring and rotates with magnet ring down by magneticaction in the kettle cover, be plugged in a measuring body in the rotating cylinder in combination kettle cover bottom rotational support, and the output shaft of measuring body is fixedlyed connected with following magnet ring inwall, be provided with a torque sensor at combination kettle cover top, its input shaft rotates and is supported on combination kettle cover top, and fixedly connected with the upper magnetic ring inwall, drilling fluid in the rotating cylinder is when rotating together along with rotating cylinder, the following magnet ring that can promote in the measuring body drive combination kettle cover rotates, thereby driving down, magnet ring rotates, torque sensor is measured the information of reversing of its input shaft, and calculate the rheological parameter of drilling fluid to be measured by control system, measure portion design therefore of the present invention is ingenious, simple to operate, and measure calculating, the measuring accuracy height by torque sensor and control system.3, the present invention is owing to the cylindrical shell at autoclave body radially is provided with an import and an outlet, before beginning measurement, import on the cylindrical shell and outlet are communicated with refrigeration machine or supercharge pump, can regulate the temperature and pressure condition of drilling fluid very easily, and outside autoclave body, coat a heating jacket, just can heat, so the present invention can simulate the temperature and pressure condition of true ocean deepwater well drilling fluid to be measured, thus the more accurate rheological parameter of measuring drilling fluid.The present invention is simple to operate, the accuracy of measurement height, and can measure the rheological of drilling fluid under the different temperature and pressure conditions, it can be widely used in the rheological measurement process of all kinds of drilling fluids.
Description of drawings
Fig. 1 is a 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).
Rotating cylinder 2 of the present invention is connected in the autoclave body 1 by bearing, and the bottom of rotating cylinder 2 is fixedly connected on down in the magnet ring 18.Rotating cylinder 2 tops are provided with greatly, following three grades of little step-like iner ledges 21, inject to make things convenient for drilling fluid.
Drive motor of the present invention adopts electrodeless variable-speed, can regulate the rotating speed of belt pulley 16 in 0～600 commentaries on classics scope arbitrarily, therefore can measure the shear stress under the different rotating speeds, obtains the rheological measurement result of drilling fluid more accurately.
In the foregoing description, the bottom of interior kettle cover 31 can be connected in the autoclave body 1 by external thread; Also can some O-ring seals be set, interior kettle cover 31 and cylindrical shell 11 be tightly connected by O-ring seal be in the same place in interior kettle cover 31 bottoms.In addition, be provided with packing washer between the step bottom surface of interior kettle cover 31 and autoclave body 1 end face, be tightly connected with realization.
When using apparatus of the present invention that the rheological of drilling fluid is measured, may further comprise the 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, measuring sensor 4 is packed in the rotating cylinder 2, and tighten combination kettle cover 3;
2) before the test beginning,, the temperature and pressure condition of drilling fluid to be measured in the rotating cylinder 2 is regulated according to test request:
3) after drilling fluid to be measured reaches the temperature and pressure condition of test request, open drive motor, the following magnet ring 17 that drives in the autoclave body by belt pulley 16 rotates, under magneticaction, upper magnetic ring 18 in the autoclave body can rotate together along with following magnet ring 17, thereby driven rotary tube 2 rotates; Drilling fluid in the rotating cylinder 2 is when rotating together along with rotating cylinder 2, can drive measuring body 42 by the viscous effect of drilling fluid rotates, the rotation of measuring body 42 can be rotated by the following magnet ring 37 that its output shaft 44 drives in the combination kettle cover 3, under magneticaction, upper magnetic ring 36 in the combination kettle cover 3 can rotate together along with following magnet ring 37, and the input shaft 43 that connects the torque sensor 41 of upper magnetic ring 36 just can input to torque sensor 41 with the information of reversing of input shaft 43 inductions;
4) calculate through conventional by the control system that is connected with torque sensor 41, just can draw the rheological parameter of drilling fluid to be measured.
Among the said method embodiment, step 2) adjusting about the temperature and pressure condition comprises:
When 1. needing to measure the rheological of drilling fluid under the cryogenic high pressure condition, the import 12 of autoclave body 1 and outlet 13 are communicated with refrigeration machine, boost port on the autoclave body 1 is connected with supercharge pump, inject refrigerating fluid to reduce the temperature of drilling fluid to be measured by the refrigerator pipes circulation of refrigeration machine in autoclave body 1, pressurize to increase the pressure of drilling fluid to be measured to autoclave body 1 by supercharge pump simultaneously.
When 2. needing to measure the rheological of drilling fluid under the high-temperature and high-pressure conditions, in autoclave body 1 periphery one high-temperature heating equipment is set, drilling fluid to be measured is heated to the high-temperature temperature of setting, simultaneously the boost port on the autoclave body 1 is connected with supercharge pump, pressurizes to increase the pressure of drilling fluid to be measured to autoclave body 1 by supercharge pump.
Above-mentioned high-temperature heating equipment can be one to have the heating jacket of high temperature circulation liquid state, also can be an electric heater unit.
The various embodiments described above only are used to illustrate the present invention, and wherein the structure of each parts, connected mode etc. 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 got rid of outside protection scope of the present invention.
Claims (6)
1. drilling fluid rheology measurement mechanism, it 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 the described cylindrical shell, and the two ends of described refrigerator pipes pass described cylindrical shell and are communicated with a refrigeration machine, radially are provided with a boost port that is communicated with supercharge pump on the described cylindrical shell; The bottom of described cylindrical shell is provided with a base plate, the fixedly connected pillar in the bottom surface of described base plate, and a belt pulley by described drive motor drive is rotationally connected on the described pillar; The top of described belt pulley is provided with the magnet ring once with its rotation, and the end face of described base plate is provided with a upper magnetic ring that rotates with described magnet ring down by magneticaction;
Described rotating cylinder is connected in the described autoclave body by bearing, the fixedly connected described magnet ring down in the bottom of described rotating cylinder;
Described combination kettle cover comprises an interior kettle cover that is sealedly connected on described autoclave body top, and 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 kettle cover is provided with an outer kettle cover in described, and the bottom of described outer kettle cover is connected on the described autoclave body by internal thread; The kettle cover top is provided with a top cover in described, and described top cover bottom is connected described interior kettle cover outside; Be provided with a upper magnetic ring between described top cover and the described dividing plate, be provided with magnet ring between described dividing plate and the described shrouding;
Described measuring sensor comprises a torque sensor and a measuring body, and described torque sensor is arranged on the described top cover, and its input shaft, and is fixedlyed connected with the upper magnetic ring inwall in the described combination kettle cover on described top cover and dividing plate by bearings; Described measuring body is plugged in the described rotating cylinder, and its output shaft rotational support and is fixedlyed connected with the following magnet ring inwall in the described combination kettle cover on described shrouding and dividing plate.
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 iner ledge of going up big, following small stair shape that makes things convenient for drilling fluid to inject.
3. a kind of drilling fluid rheology measurement mechanism as claimed in claim 1 or 2 is characterized in that: the kettle cover bottom is connected in the described autoclave body by external thread in described, is provided with packing washer between the step bottom surface of described interior kettle cover and the 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: the kettle cover bottom is provided with some O-ring seals in described, kettle cover and described autoclave body are tightly connected together by O-ring seal in described, are provided with packing washer between the step bottom surface of described interior kettle cover and the described autoclave body end face.
5. measuring method as drilling fluid rheology measurement mechanism as described in the claim 1～4, it may further comprise the steps:
1) open the combination kettle cover, related taking-up measuring sensor injects drilling fluid to be measured from the top of rotating cylinder, measuring sensor is packed in the rotating cylinder, and tighten the combination kettle cover;
2) before the test beginning,, the temperature and pressure condition of drilling fluid to be measured in the rotating cylinder is regulated according to test request;
3) after drilling fluid to be measured reaches the temperature and pressure condition of test request, open drive motor, the following magnet ring that drives in the autoclave body by belt pulley rotates, under magneticaction, upper magnetic ring in the autoclave body can rotate together along with following magnet ring, thereby the driven rotary tube rotates; Drilling fluid in the rotating cylinder is when rotating together along with rotating cylinder, can drive measuring body by the viscous effect of drilling fluid rotates, the rotation of measuring body can be rotated by the following magnet ring that its output shaft drives in the combination kettle cover, under magneticaction, upper magnetic ring in the combination kettle cover can rotate together along with following magnet ring, and the input shaft that connects the torque sensor of upper magnetic ring just can input to torque sensor with the information of reversing of input shaft induction;
4) calculate by the control system process that is connected with torque sensor, just can draw the rheological parameter of drilling fluid to be measured.
6. the measuring method of a kind of drilling fluid rheology measurement mechanism as claimed in claim 5 is characterized in that: the regulative mode about the temperature and pressure condition described step 2) adopts one of following method:
When 1. measuring the rheological of drilling fluid under the cryogenic high pressure condition, the refrigerator pipes that is provided with in the autoclave body is communicated with refrigeration machine, inject refrigerating fluid to reduce the temperature of drilling fluid to be measured by the refrigerator pipes circulation of refrigeration machine in autoclave body, simultaneously the boost port on the autoclave body is connected with supercharge pump, pressurizes to increase the pressure of drilling fluid to be measured to autoclave body by supercharge pump;
When 2. measuring the rheological of drilling fluid under the high-temperature and high-pressure conditions, in the autoclave body periphery one high-temperature heating equipment is set, drilling fluid to be measured is heated to the high-temperature temperature of setting, simultaneously the boost port on the autoclave body is connected with supercharge pump, pressurizes to increase the pressure of drilling fluid to be measured to autoclave body 1 by supercharge pump.
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Yangtze University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Yangtze University |
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Effective date of registration: 20191211 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC research institute limited liability company Patentee before: China Offshore Oil Group Co., Ltd. Co-patentee before: Yangtze University |