CN103175762A - Tester and test method for detecting penetration time of propping agent - Google Patents
Tester and test method for detecting penetration time of propping agent Download PDFInfo
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- CN103175762A CN103175762A CN2012104601906A CN201210460190A CN103175762A CN 103175762 A CN103175762 A CN 103175762A CN 2012104601906 A CN2012104601906 A CN 2012104601906A CN 201210460190 A CN201210460190 A CN 201210460190A CN 103175762 A CN103175762 A CN 103175762A
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Abstract
The invention relates to a tester and testing method for detecting penetration time of a propping agent. The tester comprises a measuring device, an upper liquid level sensor, a lower liquid level sensor and a processor, wherein the measuring device comprises a charging part for containing the propping agent, a liquid filling part for containing liquid, and a breathable base; the liquid filling part is prepared from a hydrophobic material and is communicated with the outside; the upper liquid level sensor and the lower liquid level sensor are respectively embedded near the upper surface and the lower surface of the propping agent; and the processor is connected with the upper liquid level sensor and the lower liquid level sensor, receives signals sent out from the upper liquid level sensor and the lower liquid level sensor and calculates difference of time when the upper liquid level sensor and the lower liquid level sensor sense liquid. The tester for detecting the penetration time of the propping agent does not simulate ground conditions and can relatively simply and visually detect the penetration time for the liquid to pass through the propping agent with preset filling thickness under a normal pressure condition, so that the water resistance performance of the propping agent can be accurately evaluated. Different penetration time of different propping agents are obtained under the same condition, and the longer the penetration time is, the better the water resistance performance is, otherwise, the water resistance performance is poorer.
Description
Technical field
The present invention relates to liquid barrier property testing apparatus and the method thereof of propping agent, be specifically related to a kind of tester for detection of the propping agent time of penetration and method of testing thereof.
Background technology
In the performance history of Oil/gas Well, continuous decline due to reservoir pressure, cause limit water to advance and end liter waterborne, the increasing yield and injection operations such as pressure break, acidifying, water filling in addition, cause the oil gas water percentage of producing well to raise, even reach more than 90%, this not only makes production efficiency descend, make simultaneously the oil gas field sewage load sharply increase, consume a large amount of human and material resources.Propping agent with selectivity liquid barrier property is to inject the stratum in fracturing process, be used for supporting crack, improve a kind of material with blocking solution characteristic of fracture flow capacity, can obviously reduce the water rate of Oil/gas Well, improves oil and gas production.Liquid barrier property refers to, propping agent hinders the ability that liquid passes through when normal pressure is piled up, and can represent with hindering the time that Liquid Penetrant passes through, and namely time of penetration, represent.The test index of the liquid barrier property of ununified regulation propping agent, instrument, method etc. in the company standard of the large enterprises such as oil and gas industry standard and PetroChina Company Limited., China Petrochemical Industry.
Chinese patent literature CN201697857U discloses a kind of pick-up unit for fracturing propping agents, comprise air deflector, this air deflector comprises housing and moving press plate, is limited with in housing be used to the cavity volume that holds fracturing propping agents, inlet porting and outlet on housing, moving press plate can be done Linear-moving; At least the first liquid feedway is connected valve and is connected with described entrance with the second liquid feedway, and of selectively controlling in first liquid feedway and second liquid feedway of this valve communicates with entrance; Flow measurement device is used for measuring the flow from the liquid of outlet outflow; And controller, this controller is electrically connected to first liquid feedway, second liquid feedway and flow measurement device.Pick-up unit in the prior art, flow measurement device detect the flow that can pass through the liquid of cavity volume, estimate propping agent to the penetrating power of water and oil product with this.In certain hour, flow is larger, illustrate that the penetrating power of propping agent is poorer, otherwise the penetrating power of propping agent is better; Flow is certain, and time of penetration is longer, illustrates that the penetrating power of propping agent is better, otherwise, illustrate that the penetrating power of propping agent is poorer.Above-mentioned detection device partial simulation formation condition, but process is loaded down with trivial details, complicated operation, and the quality of the penetrating power that reflects of the time of penetration of different propping agent under normal pressure is consistent with the penetrating power quality that time of penetration under clossing pressure reflects.In addition, above-mentioned detection device has only been estimated the penetrating power of propping agent from the fluid flow angle that penetrates propping agent, not mentioned time of penetration and measurement mechanism thereof, and result is directly perceived not.
Summary of the invention
For this reason, to be solved by this invention is that the pick-up unit testing process of prior art is loaded down with trivial details, complicated operation, and the problem of not mentioned time of penetration provides a kind of tester for detection of the propping agent time of penetration and method of testing thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of tester for detection of the propping agent time of penetration, described tester comprises:
Measurement mechanism, comprise be used to the charging section that holds propping agent to be measured and be positioned at the dress liquid section that described charging section top is used for accommodating test liquid, described dress liquid section and extraneous conducting, the hydrophobic material manufacturing of described charging section's employing, described measurement mechanism also comprises be used to the ventilative base that supports described propping agent to be measured;
Upper level sensor is used for being embedded near position described propping agent middle distance upper surface to be measured;
Lower level sensor is for the following pre-position of level sensor on being embedded in described in described propping agent to be measured;
Processor, described processor joins with described upper level sensor, described lower level sensor respectively, be used for receiving the signal that described upper level sensor and described lower level sensor send, and obtaining the time that described upper level sensor and described lower level sensor are sensed liquid, described lower level sensor is sensed the time of liquid and time interval that described upper level sensor is sensed liquid is time of penetration.
As a kind of embodiment, described tester also comprises feeding device, and described feeding device is provided with valve and drain pipe, and wherein, described valve is connected with described processor, and described processor is controlled described valve open and shutoff; The outlet end of described drain pipe extend near the top of described charging section.
As a kind of embodiment, described feeding device also comprises constant flow pump, is used for described test liquid is pumped into described measurement mechanism, and the speed that pumps into of described constant flow pump is 60-80ml/min.
As a kind of embodiment, the ventilative base of described measurement mechanism is the screen mesh type base.
As a kind of embodiment, also comprise being placed in the filter paper that propping agent upper surface to be measured described in described charging section is used for current stabilization when using.
Based on same inventive concept, the method for testing that the present invention also provides a kind of above-mentioned tester to realize comprises the steps:
S1: propping agent to be measured is inserted in charging section, and process the upper surface of described propping agent to be measured smooth, in the process of charging, upper level sensor is imbedded near position described test propping agent middle distance upper surface, the following pre-position of level sensor on imbedding described lower level sensor described in described test propping agent, and respectively described upper level sensor is connected with processor with described lower level sensor;
S2: with the described dress liquid of the lasting injection of test liquid section; Simultaneously, described processor receives the signal of described upper level sensor, and records the time that described upper level sensor is sensed liquid, stops injecting test liquid to described dress liquid section;
S3: the time that under processor for recording, described lower level sensor is sensed liquid;
S4: described lower level sensor is sensed the time of liquid and time interval that described upper level sensor is sensed liquid is time of penetration.
As a kind of embodiment, by feeding device, liquid is injected described dress liquid section under the prerequisite of not destroying described propping agent upper surface to be measured.
As a kind of embodiment, in described step S2, described feeding device pumps into described measurement mechanism by constant flow pump with liquid, and the speed that pumps into of described constant flow pump is 60-80ml/min.
As a kind of embodiment, in described step S1, the upper surface that also is included in described propping agent to be measured covers the step of filter paper.
As a kind of embodiment, before described step S1, also comprise the step of described propping agent to be measured being dried and is cooled to room temperature.
As a kind of embodiment, more than five times, repeating step S1 to step S4, obtains respectively five above time of penetration values, gives up the individual data point that obviously departs from actual value, and the mean value of obtaining all the other time of penetration values is as final time of penetration.
Technique scheme of the present invention has the following advantages compared to existing technology:
Tester for detection of the propping agent time of penetration of the present invention comprises measurement mechanism, upper level sensor, lower level sensor and processor, when the measurement mechanism of a certain amount of propping agent was equipped with in the water injection, the time interval that upper and lower level sensor is sensed liquid was time of penetration.The present invention need not simulation stratum condition, can complete test under atmospheric pressure state, and testing tool is relatively less, and testing procedure is simple; And, test out intuitively test liquid by this liquid barrier property index of time of penetration of the propping agent to be measured of predetermined filling thickness, as reference, can facilitate, assess intuitively, exactly the liquid barrier property of propping agent with this; Dissimilar propping agent adopts tester of the present invention and testing liquid, and guarantees that the filling thickness of the testing liquid infiltration imbedded is identical, can draw the time of penetration of different propping agents, time of penetration is longer, show that liquid barrier property is better, time of penetration is shorter, shows that liquid barrier property is poorer.
The present invention by the outlet end with the feeding device drain pipe extend into charging section near, make the speed of liquid of outflow of outlet end identical with the liquid velocity that arrives proppant surface, avoid that outlet end is too high brings propping agent excessive impact.By constant flow pump is set, when realizing automatic feed liquor, also provide stable flow rate of liquid, avoid change in flow to break up propping agent, guarantee that measurement result is accurate.Can filter insoluble impurities in test liquid by filter paper is set, simultaneously, dispersing liquid plays the current stabilization effect, avoids propping agent is broken up, and affects testing result.Be provided with the screen mesh type base bottom graduated cylinder, make the graduated cylinder full communication between the higher and lower levels, when avoiding filling liquid, the graduated cylinder inner sealing has gas, and testing liquid can't pass through, and can't complete experiment.With propping agent oven dry to be measured, avoiding propping agent to be measured itself affects liquid barrier property because of humidity before detection.Through repeated detection, obtain the mean value of time of penetration, avoid because the operation reason causes that measuring result error is excessive.
Description of drawings
For content of the present invention is more likely to be clearly understood, the below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein:
Fig. 1 is the structural representation for detection of the tester of propping agent time of penetration to be measured of first embodiment of the present invention;
Fig. 2 is the structural representation for detection of the tester of propping agent time of penetration to be measured of second embodiment of the present invention;
In figure, Reference numeral is expressed as: 101-the first liquid reserve tank, the 102-constant flow pump, the upper customization of 103-graduated cylinder, 104-first processor, 105-liquid outlet, the 106-thermo detector, the 107-fluid level gauge, 108-air hole, level sensor on 109-first, first time level sensor of 110-, 111-screen mesh type base customizes graduated cylinder under 112-, 201-integral type customization graduated cylinder, level sensor on 202-second, 203-the second processor, 204-drain pipe, 205-the second liquid reserve tank, the 206-valve, second time level sensor of 207-.
Embodiment
Embodiment one, and is shown in Figure 1:
A kind of tester for detection of the propping agent time of penetration comprises:
The first liquid reserve tank 101; Described the first liquid reserve tank 101 inside are provided with the thermo detector 106 be used to the temperature of measuring described the first liquid reserve tank 101 interior liquid; Described the first liquid reserve tank 101 outer setting are useful on the fluid level gauge 107 that shows described the first liquid reserve tank 101 interior liquid levels.The temperature that thermo detector 106 can obtain test liquid is set the first liquid reserve tank 101 is interior, in order to record propping agent to the penetrating power of the liquid of different temperatures; Fluid level gauge 107 is set, can shows the liquid level in the first liquid reserve tank 101, in order to adjust the first interior liquid level of liquid reserve tank 101 in good time, avoid the too high or too low gas that makes of liquid level to pump into measurement mechanism.
Feeding device, described feeding device are provided with valve, drain pipe and constant flow pump 102; The outlet end of described drain pipe extend near the top of described charging section.The inlet of feeding device is connected with the liquid outlet 105 of described the first liquid reserve tank 101.Described constant flow pump 102 is used for described test liquid is pumped into measurement mechanism, and the speed that pumps into of described constant flow pump 102 is 60-80ml/min.By constant flow pump 102 is set, current stably also are provided when realizing automatic feeding water, avoid water flow velocity to neglect fast neglecting slowly, break up propping agent, cause measurement result inaccurate.But the invention is not restricted to use constant flow pump 102, other can realize that the device of controlling flow rate of liquid also can be suitable for.
Measurement mechanism, comprise be used to the charging section that holds propping agent to be measured and be positioned at the dress liquid section that described charging section top is used for accommodating test liquid, described dress liquid section and extraneous conducting, the hydrophobic material manufacturing of described charging section's employing, described proving installation also comprises be used to the ventilative base that supports described propping agent to be measured.In the present embodiment, described charging section and dress liquid section adopt respectively two transparent customization graduated cylinders: on customize graduated cylinder 103 and lower customization graduated cylinder 112, on the outer wall of described upper customization graduated cylinder 103 and described lower customization graduated cylinder 112, altitude scale is arranged all, described upper customization graduated cylinder 103 is as dress liquid section, described lower customization graduated cylinder 112 is as charging section, described lower customization graduated cylinder 112 adopts common hydrophobic materials, and liquid stream flows down along customization graduated cylinder sidewall when avoiding liquid to flow into, and affects testing result.Wherein, described upper customization graduated cylinder 103 both ends opens, described lower customization graduated cylinder 112 1 end openings, the other end has be used to the screen mesh type base 111 that supports described propping agent to be measured; Described upper customization graduated cylinder 103 and described lower customization graduated cylinder 112 are oppositely arranged up and down, be provided with draw-in groove and closure on the outer wall that joins between described upper customization graduated cylinder 103 and described lower customization graduated cylinder 112, and sealed by elastic seal ring, when avoiding injecting test liquid, test liquid flows out from here, affects measurement result; The drain pipe of described feeding device is stretched into by upper customization graduated cylinder 103 tops, and is fixed by rubber plug, and avoiding when the liquid flow, drain pipe rocks, and change in flow is impacted propping agent, affects test result.The top of described upper customization graduated cylinder 103 is also to be provided with air hole on rubber plug so that with the atmosphere conducting, guarantee that test carries out under normal pressure.Described lower customization graduated cylinder 112 bottoms are provided with screen mesh type base 111, make lower customization graduated cylinder 112 and atmosphere conducting, thereby get rid of the cylinder internal gas pressure to the impact of test.Screen mesh type base 111 its holes are even and specification is more, and the size in its hole is as the criterion not reveal propping agent, for example, are 20/40 order as propping agent, and screen cloth should select 50 orders even thinner; Be 30/50 order as propping agent, screen cloth should select 70 orders even thinner.
In the present embodiment, described upper customization graduated cylinder 103 and lower customization graduated cylinder 112 internal diameters are 50 millimeters, and customization graduated cylinder height is 150mm down, and the filling thickness of the propping agent that when being convenient to guarantee repeated detection, test liquid flows through is identical.
On first, level sensor 109, are used for being embedded in described propping agent middle distance upper surface 2mm to be measured position, and all are embedded in described propping agent to be measured and do not expose;
First time level sensor 110 is used for being embedded in described propping agent middle distance lower surface 2mm to be measured position;
First processor 104, described processor respectively with described first on level sensor 109, described lower first time level sensor 110 join, receive the signal that on described first, level sensor 109 and described first time level sensor 110 send, and record the time that on described first, level sensor 109 and described first time level sensor 110 are sensed liquid, described first time level sensor 110 sensed level sensor 109 on time and described first of liquid and sensed the mistiming of liquid and be time of penetration.Simultaneously, described first processor 104 is connected with described valve, and described first processor 104 is controlled described valve open and shutoff.
Filter paper, be placed in propping agent upper surface to be measured described in described charging section during use, be used for current stabilization, main by with liquid dispersion to described propping agent to be measured more on large tracts of land, play the current stabilization effect, avoid liquid only to act in the support of small size very propping agent is broken up, guarantee the accuracy of testing conditions and detection architecture; Can also filter the insoluble impurities in test liquid.
As a kind of distortion of the above embodiment of the present invention, described liquid reserve tank adopts the transparent material manufacturing, and is carved with scale on outer wall, cancels the setting of fluid level gauge.
Based on same inventive concept, the method for testing that the present invention also provides above-mentioned tester to realize comprises the steps:
S1: propping agent to be measured is inserted in lower customization graduated cylinder 112, and the upper surface of described propping agent to be measured is struck off and the filter paper of mating formation, in the process of charging, level sensor 109 on first is imbedded described test propping agent middle distance upper surface 2mm position, described lower first time level sensor 110 imbedded described test propping agent middle distance lower surface 2mm position, and (distance on described first between level sensor 109 and first time level sensor 110 is the filling thickness of propping agent, in the present embodiment, the filling thickness of propping agent to be measured is 146mm), and respectively level sensor 109 on described first is connected with first processor 104 with described first time level sensor 110, then 112 times customization graduated cylinders 112 of described upper customization graduated cylinder 103 and lower customization graduated cylinder are oppositely arranged, and be provided with draw-in groove and closure on the outer wall that joins between customization graduated cylinder 103 and described lower customization graduated cylinder 112 on described, at last by elastic seal ring sealing, guarantees that described upper customization graduated cylinder 103 and lower customization graduated cylinder 112 junctions seal fully,
S2: test liquid is continued to inject described upper customization graduated cylinder 103 by constant flow pump with 60-80ml/min speed; Simultaneously, described first processor 104 receives the signal of level sensor 109 on described first, and record the time that on described first, level sensor 109 is sensed liquid, and stop when level sensor 109 has been sensed liquid on described first injecting test liquid to described dress liquid section; At this moment, the liquid height of 103 li, described upper customization graduated cylinder is the blocking solution height of described propping agent to be measured;
S3: record the time that described first time level sensor 110 sensed liquid first processor 104;
S4: calculate described first time level sensor 110 and sense the mistiming that on the time and described first of liquid, level sensor 109 is sensed liquid, the described mistiming is time of penetration.
Time of penetration refers to, a certain amount of Liquid Penetrant flows through the required time of propping agent of certain filling thickness.In the present embodiment, adopt water as test liquid.In above-mentioned testing process, when water enters described upper customization graduated cylinder 103, resistance effect due to propping agent, the interior water level of described upper customization graduated cylinder 103 begins to rise, when rising to the blocking solution height, under the pressure of water, propping agent begins infiltration water, send signal when on described first, level sensor 109 is sensed water, when described processor 103 receives the signal of level sensor 109 on described first, stop into water standing propping agent, when described first time level sensor 110 sensed water, the needed time was time of penetration.
In described step S2, the position of imbedding of level sensor 109 should be predeterminated position on described first, can not arbitrarily change, otherwise affect test repeatability.On first, level sensor 109 should be positioned at left and right, 2mm place under the propping agent upper surface.Because propping agent is the loose attitude of normal pressure, thus easily broken up by ambient pressure, and then cause test result to be forbidden or test crash, so on first, level sensor 109 should not be imbedded shallow; Because time of penetration itself is that tolerance propping agent normal pressure hinders the ability that water passes through, if any obvious infiltration, exceeded the scope of its time of penetration, therefore on first, level sensor 109 should not be imbedded dark; Consider, the 2mm place to be advisable, both can to have guaranteed to measure and normally carry out, be unlikely to again obvious infiltration.
Depth of burial as for lower first time level sensor 110, mainly based on the concept of " time of penetration ", guarantee that namely water sees through the propping agent of certain filling thickness, select first time level sensor 110 to be positioned at above 2mm place, charging section bottom surface in the present embodiment, also can select as required other position, as long as guarantee that there is difference the time that upper level sensor and lower level sensor induce, comparability for the test data of the time of penetration that guarantees different propping agents, when the different propping agent time of penetration of test, the filling thickness of different propping agents should be consistent.
As a distortion of said method, before described step S1, also comprise the step of described propping agent to be measured being dried and is cooled to room temperature.Oven dry is preferably in 105 ℃, and the time is about 1 hour; Must be placed in exsiccator when cooling interior cooling, prevent that condensation vapor from proppant surface, affecting testing result.
Method of testing as other embodiments of the invention, comprise that also repeatedly repeating step S1 is to step S4, repeating step S1 is preferably in more than five times to the number of times of step S4, obtain respectively five above time of penetration values, give up the individual data point that obviously departs from actual value, and the mean value of obtaining all the other times of penetration is as final time of penetration.
Embodiment two, and is shown in Figure 2:
A kind of tester for detection of the propping agent time of penetration of the present invention comprises:
The second liquid reserve tank 205, described the second liquid reserve tank 205 outer walls adopt the transparent material manufacturing, and be carved with altitude scale on described outer wall, liquid storage amount in can described the second liquid reserve tank of Real Time Observation, in order to adjust the liquid storage amount in described the second liquid reserve tank 205 in good time, in order to avoid the second too high overflow of the interior liquid level of liquid reserve tank 205 or liquid level are too low the gas inject measurement mechanism arranged.
Feeding device, described feeding device are provided with valve 206 and drain pipe 204, and the outlet end of described drain pipe extend near the top of charging section.The inlet of feeding device is connected with the liquid outlet of described the second liquid reserve tank 205.
Measurement mechanism, comprise be used to the charging section that holds propping agent to be measured and be positioned at the dress liquid section that described charging section top is used for accommodating test liquid, described dress liquid section and extraneous conducting, the hydrophobic material manufacturing of described charging section's employing, described proving installation also comprises be used to the ventilative base that supports described propping agent to be measured.In the present embodiment, described measurement mechanism adopts integral type customization graduated cylinder 201, the latter half of described integral type customization graduated cylinder 201 is as charging section, the first half of described integral type customization graduated cylinder 201 is as dress liquid section, the thickness of propping agent of packing into is not limited to 1/2 place of integral type customization graduated cylinder 201, can insert according to the substantial evidence needs propping agent of certain filling thickness, as long as guarantee that repeated detection is under identical conditions.Described integral type customization graduated cylinder 201 adopts common hydrophobic material as the latter half of charging section, and liquid stream flows down along customization graduated cylinder sidewall when avoiding liquid to flow into, and affects testing result.Wherein, have air hole on the base of described integral type customization graduated cylinder 201, make integral type customization graduated cylinder 201 lower ends and atmosphere conducting, get rid of the cylinder internal gas pressure to the impact of test, the size of described air hole can guarantee to make propping agent not reveal and get final product, and an air hole or a plurality of air hole can be set.The drain pipe of described feeding device is stretched into by described integral type customization graduated cylinder 201 upper ends, when test, guarantees as far as possible that drain pipe is stable not rock, in order to avoid during liquid flow, drain pipe rocks, and impacts propping agent.
On second, level sensor 202, are embedded in described propping agent middle distance upper surface 2mm to be measured position; And all be embedded in described propping agent to be measured and do not expose;
Second time level sensor 207 is embedded in described propping agent middle distance lower surface 2mm to be measured position;
The second processor 203, described the second processor 203 is connected with level sensor 202, described second time level sensor 207 on described second respectively, receive the signal that on described second, level sensor 202 and described second time level sensor 207 send, and record the time that on described second, level sensor 202 and described second time level sensor 207 are sensed liquid, described second time level sensor 207 sensed level sensor 202 on time and described second of liquid and sensed the mistiming of liquid and be time of penetration.Simultaneously, described the second processor 203 is connected with described valve 206, and described the second processor 203 is controlled opening and turn-offing of described valve 206.
Filter paper, be placed in propping agent upper surface to be measured described in described charging section during use, be used for current stabilization, main by with liquid dispersion to described propping agent to be measured more on large tracts of land, play the current stabilization effect, avoid liquid only to act in the support of small size very propping agent is broken up, guarantee the accuracy of testing conditions and detection architecture; Can also filter the insoluble impurities in test liquid.
Based on same inventive concept, the method for testing that the present invention also provides above-mentioned tester to realize comprises the steps:
T1: propping agent to be measured is inserted in integral type customization graduated cylinder 201, reach 1/2 height of integral type customization graduated cylinder 201, and the upper surface of described propping agent to be measured is struck off and the filter paper of mating formation, in the process of charging, level sensor 202 on second is imbedded described test propping agent middle distance upper surface 2mm position, described second time level sensor 207 imbedded described test propping agent middle distance lower surface 2mm position, and respectively level sensor 202 on described second is connected with processor with described second time level sensor 207;
T2: with the described dress liquid of the lasting injection of test liquid section; Simultaneously, described the second processor 203 receives the signal of level sensor 202 on described second, and record the time that on described second, level sensor 202 is sensed liquid, and stop when level sensor 202 has been sensed liquid on described second injecting test liquid to described dress liquid section; At this moment, the liquid height in described integral type customization graduated cylinder 201 the first half is the blocking solution height of described propping agent to be measured;
T3: record the time that described second time level sensor 207 sensed liquid;
T4: calculate described second time level sensor 207 and sense the mistiming that on the time and described second of liquid, level sensor 202 is sensed liquid, the described mistiming is time of penetration.
Time of penetration refers to, the needed time of propping agent of the certain filling thickness of a certain amount of Liquid Penetrant.In the present embodiment, described test liquid is water.in above-mentioned testing process, enter the first half of described integral type customization graduated cylinder 201 when water, resistance effect due to propping agent, in dress liquid section, water level begins to rise, when rising to certain altitude, when reaching maximum height, under the pressure of water, propping agent begins infiltration water, send signal when on described second, level sensor 202 is sensed water, when described the second processor 203 receives the signal of level sensor 202 on described second, stop into water, second time level sensor induction 207 is sensed level sensor 202 on water institute's elapsed time and described second and is sensed the mistiming of liquid and be time of penetration.
In described step T2, the position of imbedding of level sensor 202 should be predeterminated position on described second, can not arbitrarily change, in order to avoid affect test repeatability.On second, level sensor 202 should be positioned at left and right, 2mm place under the propping agent upper surface.Because propping agent is the loose attitude of normal pressure, thus easily broken up by ambient pressure, and then cause test result to be forbidden or test crash, so on second, level sensor 202 should not be imbedded shallow; Because time of penetration itself is that tolerance propping agent normal pressure hinders the ability that water passes through, if any obvious infiltration, exceeded the scope of its time of penetration, therefore on second, level sensor 202 should not be imbedded dark.Consider, the 2mm place to be advisable, both can to have guaranteed to measure and normally carry out, be unlikely to again obvious infiltration.
Depth of burial as for second time level sensor 207, mainly based on the concept of " time of penetration ", guarantee that namely water sees through the propping agent of certain filling thickness, therefore selecting lower level sensor to be positioned at above 2mm place, charging section bottom surface in the present embodiment is advisable, also can select as required other position, as long as guarantee that there is difference the time that level sensor 201 on second and second time level sensor 207 induce.
In the present embodiment, before described step T1, also comprise the step of described propping agent to be measured to be measured being dried and is cooled to room temperature.Oven dry is preferably in 105 ℃, and the time was preferably about 1 hour; Must be placed in exsiccator when cooling interior cooling, prevent that condensation vapor from proppant surface, affecting testing result.
Method of testing as other embodiments of the invention, comprise that also repeatedly repeating step T1 is to step T4, multiplicity is preferably in more than five times, obtain respectively five above time of penetration values, give up the individual data point that obviously departs from actual value, and the mean value of obtaining all the other times of penetration is as final time of penetration.
Obviously, above-described embodiment is only for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the invention.
Claims (11)
1. the tester for detection of the propping agent time of penetration, is characterized in that, described tester comprises:
Measurement mechanism, comprise be used to the charging section that holds propping agent to be measured and be positioned at the dress liquid section that described charging section top is used for accommodating test liquid, described dress liquid section and extraneous conducting, the hydrophobic material manufacturing of described charging section's employing, described measurement mechanism also comprises be used to the ventilative base that supports described propping agent to be measured;
Upper level sensor is used for being embedded near position described propping agent middle distance upper surface to be measured;
Lower level sensor is for the following pre-position of level sensor on being embedded in described in described propping agent to be measured;
Processor, described processor joins with described upper level sensor, described lower level sensor respectively, be used for receiving the signal that described upper level sensor and described lower level sensor send, and obtaining the time that described upper level sensor and described lower level sensor are sensed liquid, described lower level sensor is sensed the time of liquid and time interval that described upper level sensor is sensed liquid is time of penetration.
2. tester according to claim 1, is characterized in that, described tester also comprises feeding device, and described feeding device is provided with valve and drain pipe, and wherein, described valve is connected with described processor, and described processor is controlled described valve open and shutoff; The outlet end of described drain pipe extend near the top of described charging section.
3. tester according to claim 2, is characterized in that, described feeding device also comprises constant flow pump, is used for described test liquid is pumped into described measurement mechanism, and the speed that pumps into of described constant flow pump is 60-80ml/min.
4. according to claim 1-3 described testers of any one, is characterized in that, the ventilative base of described measurement mechanism is the screen mesh type base.
5. according to claim 1-4 described testers of any one, is characterized in that, also comprises being placed in the filter paper that propping agent upper surface to be measured described in described charging section is used for current stabilization when using.
6. the method for testing that the described tester of claim 1-5 any one is realized, is characterized in that, comprises the steps:
S1: propping agent to be measured is inserted in charging section, and process the upper surface of described propping agent to be measured smooth, in the process of charging, upper level sensor is imbedded near position described test propping agent middle distance upper surface, the following pre-position of level sensor on imbedding described lower level sensor described in described test propping agent, and respectively described upper level sensor is connected with processor with described lower level sensor;
S2: with the described dress liquid of the lasting injection of test liquid section; Simultaneously, described processor receives the signal of described upper level sensor, and records the time that described upper level sensor is sensed liquid, stops injecting test liquid to described dress liquid section;
S3: the time that under processor for recording, described lower level sensor is sensed liquid;
S4: described lower level sensor is sensed the time of liquid and time interval that described upper level sensor is sensed liquid is time of penetration.
7. method of testing according to claim 6, is characterized in that, in described step S2, by feeding device, liquid injected described dress liquid section under the prerequisite of not destroying described propping agent upper surface to be measured.
8. according to claim 6 or 7 described method of testings, is characterized in that, in described step S2, described feeding device pumps into described measurement mechanism by constant flow pump with liquid, and the speed that pumps into of described constant flow pump is 60-80ml/min.
9. according to claim 6-8 described method of testings of any one, is characterized in that, in described step S1, the upper surface that also is included in described propping agent to be measured covers the step of filter paper.
10. according to claim 6-9 described method of testings of any one, is characterized in that, before described step S1, also comprises the step of described propping agent to be measured being dried and is cooled to room temperature.
11. according to claim 6-10 described method of testings of any one, it is characterized in that, more than five times, repeating step S1 is to step S4, obtain respectively five above time of penetration values, give up the individual data point that obviously departs from actual value, and the mean value of obtaining all the other time of penetration values is as final time of penetration.
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| CN104198345A (en) * | 2014-09-16 | 2014-12-10 | 中国石油大学(华东) | Method for measuring effective settling particle diameter of supporting agent |
| CN113075099A (en) * | 2021-02-24 | 2021-07-06 | 山东仁丰特种材料股份有限公司 | Method for rapidly detecting water resistance of acrylic resin coated automobile filter paper |
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| CN103175762B (en) | 2015-09-16 |
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