CN111075431B - Oil gas testing parameter recorder, operation state mode identification method and system - Google Patents
Oil gas testing parameter recorder, operation state mode identification method and system Download PDFInfo
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- CN111075431B CN111075431B CN202010020886.1A CN202010020886A CN111075431B CN 111075431 B CN111075431 B CN 111075431B CN 202010020886 A CN202010020886 A CN 202010020886A CN 111075431 B CN111075431 B CN 111075431B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 239000000725 suspension Substances 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims description 48
- 238000004804 winding Methods 0.000 claims description 8
- 238000003909 pattern recognition Methods 0.000 claims 2
- 238000012567 pattern recognition method Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 16
- 239000007788 liquid Substances 0.000 description 14
- 239000012530 fluid Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention discloses a test oil gas parameter recorder, an operation state mode identification method and a system, wherein the test oil gas parameter recorder based on tension change is provided with a tension suspension assembly, at least one end of the tension suspension assembly is fixed, and at least one end of the tension suspension assembly is connected with an oil pipe to be lifted or a pump to be lifted; and a tension sensor is arranged at the fixed end of the tension suspension component. The invention relates to a method for identifying an operation state mode, which comprises the steps of collecting tension data by using a tension change-based oil testing gas parameter recorder, and identifying the operation state through a tension data time change curve; the operation state comprises tubing operation, tubing lifting operation and swabbing operation. The oil test operation parameters can be effectively recorded, the operation state is remotely monitored, the oil extraction quantity is monitored to a certain extent, and the operation monitoring is realized.
Description
Technical Field
The disclosure belongs to the field of oil and gas well detection, and particularly relates to an oil and gas testing parameter recorder, an operation state mode identification method and an operation state mode identification system.
Background
The oil (gas) testing is the key of the oil and gas exploration, is the most direct means for searching oil and gas fields and knowing underground conditions, and is an important link for providing scientific basis for development.
The specific process is that the oil tester starts to test, search and lift after preparing. The test is pressure test, and the sealing performance of the wellhead Christmas tree and the underground sleeve is detected; the oil pipe is deepened to the bottom of the well, so that the oil tester needs to wash the well barrel with clean water in order to record the oil testing information more accurately in the subsequent work. And then, the oil tester takes part in logging and perforating operation, and the prepared special liquid medicine is pumped into the well by a pump truck and is sent to a well section to be perforated, so that the purpose of reducing pollution to stratum of the well section is to be perforated. And (3) pumping and sampling, namely reciprocating the pump up and down in the oil pipe, inducing the oil and gas layer to flow, extracting an oil sample, a gas sample and a water sample, and analyzing. Finally, the oil pipe is lifted, namely the oil pipe which is lowered into the whole shaft is lifted up. The lifted oil pipe must be placed in order to calculate the oil pipe length and well depth.
In the traditional oil and gas testing operation process, the processes of 'probing', 'lifting' namely descending and lifting the oil pipe do not have complete records, and the number of the oil pipes which are lowered/lifted is judged by the memory of oil testing workers. The recording of parameters such as speed, start-stop time and the like in the processes of oil pipe descending and oil pipe starting is also mainly finished by the recording of workers. In the oil pumping induced flow process, the record is also carried out by means of an oil tester. The difficulty of obtaining real oil test data is greatly increased.
Disclosure of Invention
The invention aims to solve the problem that the oil testing operation parameters cannot be effectively recorded through a single sensor in the existing production operation process, and provides an oil testing gas parameter recorder, an operation state mode identification method and an operation state mode identification system, which can be used for remotely monitoring the operation state.
In order to achieve the aim of the invention, a tension-change-based oil gas testing parameter recorder is provided with a tension suspension component, at least one end of the tension suspension component is fixed, and at least one end of the tension suspension component is connected with an oil pipe to be lifted or a pump to be lifted;
and a tension sensor is arranged at the fixed end of the tension suspension component.
Optionally, the tension sensor is FYZLY-101.
Optionally, the tension suspension assembly is a roller assembly, the roller assembly is provided with at least a first pulley and a second pulley, the first pulley is a fixed pulley, the second pulley is a movable pulley, and a first pull rope is arranged around the first pulley and the second pulley in a penetrating way;
The oil pipe to be lifted or the swab to be lifted is hung on the second pulley.
Optionally, the tension suspension assembly further comprises a third pulley, and the third pulley is in suspension connection with the second pulley; and a second stay cord is wound on the third pulley;
and the free end of the second stay cord is hung with an oil pipe to be lifted or a swab to be lifted.
Optionally, the well repairing machine is used for providing power for the tension suspension component.
In order to achieve the purpose of the invention, an operation state mode identification method is provided, tension data is collected by using the oil testing gas parameter recorder, and an operation state is identified through a tension-time change curve; the operation state comprises tubing operation, tubing lifting operation and swabbing operation.
Optionally, judging the operation state according to the tension pulse change value; the tension measured by the tension sensor when the oil pipe or the pump is not suspended is F, the unit is N, the tension collected by the tension sensor forms a one-dimensional array according to the time(s) sequence, the relation of the one-dimensional array to time is F n (t), and the pulse value is F n(t)＝Fn (t) -F; n represents a data number for measuring tension at a certain time, and n is a natural number which is not zero;
Sn＝max[fn(t)]-max[f(n-1)(t)]
S n is a tension pulse change value, the weight of the single oil pipe is set to be G Pipe , and the unit is N;
when S n is greater than 0 and (Sn-G Pipe )＜(G Pipe /10), judging the current state as oil pipe descending operation;
When S n is smaller than 0 and |Sn-G Pipe |＜(G Pipe /10), judging the current state as tubing operation;
When the continuous 10 pieces of S n |Sn| < (G Pipe /10), the current state is judged as the pumping operation.
Optionally, the pumping process further comprises the steps of beginning to lower the pump, locating the pump on the working fluid level, reaching the pumping depth, ascending the pump, beginning to discharge the liquid from the pump and reaching the wellhead; and carrying out the correspondence of the waveform of the tension-time change curve according to the states of the beginning of the drawing corresponding to the actual drawing, the drawing being positioned on the working fluid level, the drawing reaching the drawing depth, the drawing lifting process, the drawing beginning of the drawing liquid and the drawing reaching the wellhead.
Optionally, the method further comprises oil pumping weight identification, and specifically comprises the following steps:
the pumping weight is calculated when the pumping operation is currently performed:
m Oil (oil) ＝[Fn(t)-Fn-1(t)]a/2*sinθ*g+ρ Rope (Hn-Hn-1)；
m Oil (oil) is the mass of the oil discharged by single pumping; the pulley wire winding between first pulley and the second pulley is a, and the linear density of ρ Rope stay cord, unit: kg/m; the stress included angle between the tension sensor and the rope is theta and DEG; g is a gravity constant, 9.8N/Kg; f n(t) is the tension acquired by a tensiometer at a certain moment, N; h n is the depth of the pump to the wellhead at a certain time, m.
In order to achieve the purpose of the invention, an operation state mode identification system is provided with an operation state mode identification module, wherein the operation state mode identification module collects tension data based on a test oil gas parameter recorder, establishes a tension-time change curve and judges an operation state according to a tension pulse change value; the operation state comprises oil pipe descending operation, oil pipe lifting operation and swabbing operation; the pumping operation comprises the steps of beginning to lower the pump, positioning the pump on the working fluid level, reaching the pumping depth, ascending the pump, beginning to discharge the liquid of the pump and reaching the wellhead;
The tension of the tension sensor is F when the oil pipe or the pump is not suspended, the unit is N, the tension collected by the tension sensor forms a one-dimensional array according to the time (min) sequence, the relation of the one-dimensional array to the time is F n (t), and the pulse value is F n(t)＝Fn (t) -F; n represents a data number for measuring tension at a certain time, and n is a natural number which is not zero;
Sn＝max[fn(t)]-max[f(n-1)(t)]
S n is a tension pulse change value, the weight of the single oil pipe is set to be G Pipe , and the unit is N;
when S n is greater than 0 and (Sn-G Pipe )＜(G Pipe /10), judging the current state as oil pipe descending operation;
When S n is smaller than 0 and |Sn-G Pipe |＜(G Pipe /10), judging the current state as tubing operation;
When the continuous 10 (G Pipe /10) of S n 'Sn' S, judging the current state as the swabbing operation;
The oil pumping weight recognition module is also arranged;
the pumping weight identification specifically comprises the following steps when the pumping operation is performed:
m Oil (oil) ＝[Fn(t)-Fn-1(t)]a/2*sinθ*g+ρ Rope (Hn-Hn-1)
m Oil (oil) is the mass of the oil discharged by single pumping; the pulley wire winding between first pulley and the second pulley is a, and the linear density of ρ Rope stay cord, unit: kg/m; the stress included angle between the tension sensor and the rope is theta and DEG; g is a gravity constant, 9.8N/Kg; f n(t) is the tension acquired by a tensiometer at a certain moment, N; h n is the depth of the pump to the wellhead at a certain time, m.
The invention achieves the technical effects that:
The oil testing gas parameter recorder, the operation state mode identification method and the system can remotely monitor the operation state, monitor the oil extraction to a certain extent and realize operation monitoring.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure.
FIG. 1 is a diagram showing a first connection state of a test oil gas parameter recorder according to the present invention;
FIG. 2 is a diagram showing a second connection state of the oil and gas testing parameter recorder according to the present invention;
FIG. 3 is a complete graph of the oil test operation process of a well during the period from 16 days of 8 months of 2018 to 31 days of 8 months of 2018, including three-stage oil-down operation, three-stage oil-up operation, and two-stage swabbing operation;
FIG. 4 is a complete graph of the oil test operation process of a well during the period from 4 days of 11 in 2018 to 19 days of 11 in 2018, including three-stage oil-down operation, three-stage oil-up operation, and two-stage swabbing operation;
FIG. 5 is a detailed drawing of the pumping operation, a detailed drawing of the tubing running operation and a detailed drawing of the tubing lifting operation of FIG. 4;
FIG. 6 is a diagram showing the status of the pump and the liquid level in the pumping process of FIG. 5;
the reference numerals in the figures are as follows: 1-tension sensor, 2-first pulley, 3-first stay cord, 4-second pulley, 5-lifting part, 6-oil pipe, 7-oil well, 8-workover rig, 9-first ground anchor point, 10-second ground anchor point, 11-third pulley, 12-swab, 13-second stay cord.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
1-2, The tension change-based oil and gas testing parameter recorder is provided with a tension suspension assembly, at least one end of the tension suspension assembly is fixed, and at least one end of the tension suspension assembly is connected with an oil pipe 6 to be lifted or a pump 12 to be lifted; the tension sensor 1 is mounted at the fixed end of the tension suspension assembly. According to the invention, the tension of the pull rope on the tension suspension assembly is monitored, and a change trend chart of the tension relative to time is drawn. The working state performed in a certain time period is accurately divided through analysis of the tension and time change trend graph. Further obtaining the starting time and the ending time of the oil discharging pipe and the oil starting pipe; the number and depth of the lower and the lifting oil pipes; single speed and average speed of the lower oil pipe and the lifting oil pipe; the shortest, longest down and up time of the single oil pipe. The start time and the end time of the pumping operation, the position of the liquid level, and the duration of single pumping; single liquid extraction amount; accumulating the liquid extraction amount; the total number of swabbing and other detailed parameters.
In the embodiment of the present disclosure, the tension sensor 1 transmits and stores the measured tension data in time sequence, in s units; the model number of the tension sensor 1 is FYZLY-101.
In the embodiment of the disclosure, the tension suspension assembly is a pulley assembly, the pulley assembly is at least provided with a first pulley 2 and a second pulley 4, the first pulley 2 is a fixed pulley, the second pulley 4 is a movable pulley, and a first pull rope 3 is arranged around the first pulley 2 and the second pulley 4; the tubing 6 to be lifted or the pump 12 to be lifted is suspended on the second pulley 4. Preferably, a lifting element 5, such as a hook, is mounted on the second pulley for hanging the tubing 6 to be lifted or the pump 12 to be lifted. During operation, the oil pipe is firstly lowered to the bottom of the well from the wellhead of the oil well 7 through the lifting part 5 on the tension suspension assembly;
in an embodiment of the present disclosure, the tension suspension assembly further comprises a third pulley 11, the third pulley 11 being in suspension connection with the second pulley 4; and a second pulling rope 13 is wound on the third pulley 11; the free end of the second pulling rope 13 hangs the oil pipe 6 to be lifted or the pump 12 to be lifted. When the tubing 6 is lowered to the bottom of the well, a pumping operation, i.e., a pumping operation, is required by the pump 12.
In the embodiment of the disclosure, the well repairing machine 8 is further included, the well repairing machine 8 provides power for the tension suspension assembly, and when one end of the first stay rope 3 of the tension suspension assembly is fixed at the first ground anchor point 9, the other end of the first stay rope is connected with the well repairing machine 8 to perform the operation of oil pipe lowering; after the end, the other end of the first stay cord 3 is fixed at the second ground anchor point 10, then the third pulley 11 is connected with the second pulley 4 to carry out swabbing operation, namely, the free end of the second stay cord 13 is connected with the swab 12 to carry out swabbing operation, and the other end of the second stay cord 13 is in power connection with the workover rig 8 to provide power.
The invention relates to a working state mode identification method, which comprises the following steps: collecting tension data by using a tension change-based oil testing gas parameter recorder, and identifying an operation state through a tension data time change curve; the operation state comprises tubing operation, tubing lifting operation and swabbing operation; the oil pipe descending operation refers to the process that the oil pipe is lowered to the bottom of the well from the wellhead; the oil pipe lifting operation refers to a process of pulling the oil pipe from the bottom of the well to the top of the well when the pumping operation is completed. The pumping operation comprises the steps of beginning to lower the pump, locating the pump on the working fluid level, reaching the pumping depth, ascending the pump, beginning to discharge the liquid and reaching the wellhead. Beginning to put down the swab: namely, the workover rig starts to rotate anticlockwise, and the pump is driven by gravity to be put into the well; the swab is positioned on the working fluid level: the pump reaches the position with oil in the oil pipe; the drawer reaches the depth: i.e. the swab reaches a predetermined maximum depth, ready to begin lifting; the lifting process of the swab comprises the following steps: namely, the workover rig starts to rotate clockwise to drive the pump to ascend together with the oil on the pump; the pump starts to discharge liquid: oil begins to overflow from the wellhead; the pump reaches the wellhead: at the end of the lifting process, the pump reaches the highest position.
In an embodiment of the present disclosure, in conjunction with fig. 3, a working state determination is performed according to a tension pulse variation value; the tension of the tension sensor is F when the oil pipe or the pump is not suspended, the unit is N, the tension collected by the tension sensor forms a one-dimensional array according to the time(s) sequence, the relation of the one-dimensional array to the time is F n (t), and the pulse value is F n(t)＝Fn (t) -F; n represents a data number for measuring tension at a certain time, and n is a natural number which is not zero;
Sn＝max[fn(t)]-max[f(n-1)(t)]
S n is a tension pulse change value, the weight of the single oil pipe is set to be G Pipe , and the unit is N;
when S n is greater than 0 and (Sn-G Pipe )＜(G Pipe /10), judging the current state as oil pipe descending operation;
When S n is smaller than 0 and |Sn-G Pipe |＜(G Pipe /10), judging the current state as tubing operation;
When a plurality of S n (usually 10) Sn < (G Pipe /10) are consecutive, the current state is determined as a pumping operation.
In an embodiment of the present disclosure, the method further includes oil pumping weight identification, specifically including:
the pumping weight is calculated when the pumping operation is currently performed:
m Oil (oil) ＝[Fn(t)-Fn-1(t)]a/2*sinθ*g+ρ Rope (Hn-Hn-1)；
m Oil (oil) is the mass of the oil discharged by single pumping; the pulley wire winding between first pulley and the second pulley is a, and the linear density of ρ Rope stay cord, unit: kg/m; the stress included angle between the tension sensor and the rope is theta and DEG; g is a gravity constant, 9.8N/Kg; f n(t) is the tension acquired by a tensiometer at a certain moment, N; h n is the depth of the pump to the wellhead at a certain time, m.
In connection with fig. 6, assume 1: the friction force between the pump and the oil pipe is smaller than the pump gravity and is set to be 0; the radius of the pull rope is as follows: r units m (the radius of the steel cord is now known to be 7.8 mm); the inner diameter of the oil pipe is as follows: r is m; pull rope gravity: g Rope ; the gravity of the swab is G Drawing machine ;
f n is the tension acquired by the tensiometer at a certain moment, and H n is the depth of the pump from the wellhead (the distance from the upper surface of the pump to the wellhead) at a certain moment.
F1＝2(G Drawing machine +G Rope )*sinθ；
I.e., at the wellhead (1-point in time position in fig. 6);
at time point 2, the tensiometer collects a tension value F 2,(H2-H1)＝(F2-F1)*n/2ρ Rope x g x sin θ;
(H 2-H1) is the working fluid level depth; h 2 represents the distance of the pump from the wellhead at time point 2.
When the pump and the steel rope are positioned in the working fluid level.
(H3-H2)＝(F3-F2)*n/2(ρ Rope -ρ Oil (oil) πr2)*g*sinθ；
Wherein (H 3-H2) is the pumping depth, and H 3 represents the distance from the pump to the wellhead at time 3;
m Oil (oil) ＝(F5-F4)a/2*sinθ*g+ρ Rope (H5-H4)
where (H 5-H4) is the liquid level, i.e., the distance from the upper surface of the swab to the wellhead at point 5.
According to the operation state mode identification system, an operation state mode identification module is arranged, tension data is collected by the operation state mode identification module based on a tension change test oil gas parameter recorder, and the operation state is identified through a tension data time change curve; the operation state comprises oil pipe descending operation, oil pipe lifting operation and swabbing operation; the pumping operation comprises the steps of beginning to lower the pump, positioning the pump on the working fluid level, reaching the pumping depth, ascending the pump, beginning to discharge the liquid of the pump and reaching the wellhead;
Judging the operation state according to the tension pulse change value;
The tension of the tension sensor is F when the oil pipe or the pump is not suspended, the unit is N, the tension collected by the tension sensor forms a one-dimensional array according to the time (min) sequence, the relation of the one-dimensional array to the time is F n (t), and the pulse value is F n(t)＝Fn (t) -F; n represents a data number for measuring tension at a certain time, and n is a natural number which is not zero;
Sn＝max[fn(t)]-max[f(n-1)(t)]
S n is a tension pulse change value, the weight of the single oil pipe is set to be G Pipe , and the unit is N;
when S n is greater than 0 and (Sn-G Pipe )＜(G Pipe /10), judging the current state as oil pipe descending operation;
When S n is smaller than 0 and |Sn-G Pipe |＜(G Pipe /10), judging the current state as tubing operation;
When the continuous 10 (G Pipe /10) of S n 'Sn' S, judging the current state as the swabbing operation;
The oil pumping weight recognition module is also arranged;
the pumping weight identification specifically comprises the following steps when the pumping operation is performed:
m Oil (oil) ＝[Fn(t)-Fn-1(t)]a/2*sinθ*g+ρ Rope (Hn-Hn-1)
m Oil (oil) is the mass of the oil discharged by single pumping; the pulley wire winding between first pulley and the second pulley is a, and the linear density of ρ Rope stay cord, unit: kg/m; the stress included angle between the tension sensor and the rope is theta and DEG; g is a gravity constant, 9.8N/Kg; f n(t) is the tension acquired by a tensiometer at a certain moment, N; h n is the depth of the pump to the wellhead at a certain time, m.
In combination with the method and the system, the device and the method are utilized for carrying out actual detection:
Verification example one:
Testing oil and gas operation of a certain oil well in a long-term celebration oil field from 16 days of 2018 to 31 days of 2018: see fig. 3 for specific results:
The friction force between the pump and the oil pipe is smaller than the pump gravity and is set to be 0;
The radius of the pull rope is as follows: r units m (the radius of the steel cord is now known to be 7.8mm, i.e. 0.078 m);
the inner diameter of the oil pipe is as follows: r is m,0.62m;
pull rope gravity: g Rope is a real-time variable, and the unit is N;
the gravity of the swab is G Drawing machine and 200N;
The number of pulley windings between the first pulley and the second pulley is a=6;
Linear density of ρ Rope pull cord, unit: kg/m, 0.84Kg/m;
the stress included angle between the tension sensor and the rope is theta, DEG and 30 DEG;
g is a gravity constant, 9.8N/Kg.
Verification example two:
oil and gas testing operation of a certain oil well in a long-term celebration oil field from 2018, 11 months and 4 days to 2018, 11 months and 19 days: the specific results are shown in tables 1-3 and figures 4 and 5:
The friction force between the pump and the oil pipe is smaller than the pump gravity and is set to be 0;
The radius of the pull rope is as follows: r units m (the radius of the steel cord is now known to be 7.8mm, i.e. 0.078 m);
the inner diameter of the oil pipe is as follows: r is m,0.62m;
pull rope gravity: g Rope is a real-time variable, and the unit is N;
the gravity of the swab is G Drawing machine and 200N;
The number of pulley windings between the first pulley and the second pulley is a=6;
Linear density of ρ Rope pull cord, unit: kg/m, 0.84Kg/m;
the stress included angle between the tension sensor and the rope is theta, DEG and 30 DEG;
g is a gravity constant, 9.8N/Kg;
The results are shown in the following table:
TABLE 1
The graph corresponding to the data of Table 1 is shown in the pumping operation of FIG. 5.
TABLE 2
The graph corresponding to the data of table 2 is shown for the tubing run of fig. 5.
TABLE 3 Table 3
The graph corresponding to the data of table 3 is shown for the tubing run of fig. 5.
The data show that the actual use comparison proves that the oil testing gas parameter recorder, the operation state mode identification method and the system can remotely monitor the operation state and monitor the oil extraction quantity to a certain extent, thereby realizing operation monitoring.
Referring to fig. 6, (fig. 6 is an enlarged analysis of the pumping curve in fig. 5, and the abscissa is in seconds), the pumping process further includes beginning to lower the pump, locating the pump at the working fluid level, reaching the pumping depth, lifting the pump, beginning to discharge the liquid from the pump, and reaching the wellhead, and performing the correspondence of the waveform of the tension data time change curve according to the states of beginning to lower the pump, locating the pump at the working fluid level, reaching the pumping depth, lifting the pump, beginning to discharge the liquid from the pump, and reaching the wellhead corresponding to the actual pump; specifically, in FIG. 6, the pump is at the highest point (wellhead) at time 1, there is no oil above the pump, and the suspension to the cable now reflects the shortest to tension curve is as shown in FIG. 6, at time 1 the tension is at a minimum. At this time, if the tension gradually increases, it is considered that the drawing starts to be lowered. At time point 2, when the pump descends to the working fluid level, the tension obviously fluctuates due to the contact of the pump with the fluid level, and a pulse is formed. The previous point in time when the tension value reaches the maximum value is the deep drawing position. When the tension reaches the maximum value, it is the time point at which the lifting starts. The absolute value of the slope of the tension curve increases at the beginning of the tapping and the curve is relatively smooth throughout the tapping. When the wellhead is reached, the tension returns to its minimum value.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the embodiments described above, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (8)
1. The operation state mode identification method is characterized in that tension data are collected by using a test oil gas parameter recorder, and an operation state is identified through a tension-time change curve;
the oil gas testing parameter recorder is provided with a tension suspension assembly, at least one end of the tension suspension assembly is fixed, and at least one end of the tension suspension assembly is connected with an oil pipe (6) to be lifted or a pump (12) to be lifted;
a tension sensor (1) is arranged at the fixed end of the tension suspension component;
The operation state comprises oil pipe descending operation, oil pipe lifting operation and swabbing operation;
Judging the operation state according to the tension pulse change value;
Tension measured by a tension sensor when the oil pipe or the swab is not suspended is In units of/>The tension collected by the tension sensor forms a one-dimensional array according to the time-second sequence, and the relation of the one-dimensional array to time is/>Pulse value/>；/>Data number indicating tension measured at a certain time,/>Taking a natural number which is not zero;
；
For the tension pulse change value, the weight of the single oil pipe is set as/> In units of/>；
When (when)Greater than 0, and/>Judging the current state as oil pipe descending operation;
When (when) Less than 0, and/>Judging the current state as tubing operation;
When 10 are consecutive />Then the current state is determined as the pumping operation.
2. The method for identifying the operation state mode according to claim 1, further comprising the step of identifying the weight of the oil pumping, and specifically comprising the steps of:
Pumping weight identification is carried out when the pumping operation is currently carried out:
；
the quality of the oil discharged for a single pump; pulley winding between the first pulley and the second pulley is/> Root,/>Linear density of the pull rope, unit: kg/m; the stress included angle between the tension sensor and the rope is/>，°；/>A weight constant of 9.8N/Kg; /(I)The tension acquired by the tensiometer at a certain moment is N; /(I)For the depth of the pump to the wellhead at a certain moment, m.
3. The working state pattern recognition method according to claim 1 or 2, wherein the type of the tension sensor (1) is FYZLY-101.
4. The method for identifying the operation state mode according to claim 1 or 2, wherein the tension suspension assembly is a roller assembly, the roller assembly is provided with at least a first pulley (2) and a second pulley (4), the first pulley (2) is a fixed pulley, the second pulley (4) is a movable pulley, and a first pull rope (3) is arranged around the first pulley (2) and the second pulley (4);
The oil pipe (6) to be lifted or the pump (12) to be lifted is hung on the second pulley (4).
5. The method of claim 4, wherein the tension suspension assembly further comprises a third pulley (11), the third pulley (11) being in suspension connection with the second pulley (4); and a second stay cord (13) is wound on the third pulley (11);
the free end of the second stay cord (13) is hung with an oil pipe (6) to be lifted or a sucker (12) to be lifted.
6. The method of operating condition pattern recognition according to claim 1 or 2, further comprising a workover rig (8), the workover rig (8) powering the tension suspension assembly.
7. The operation state mode recognition system is characterized in that an operation state mode recognition module is arranged, the operation state mode recognition module collects tension data based on a test oil gas parameter recorder, a tension-time change curve model is established, and operation state judgment is carried out according to a tension pulse change value; the operation state comprises oil pipe descending operation, oil pipe lifting operation and swabbing operation;
tension of tension sensor when tubing or swab is not suspended The unit is N, the tension collected by the tension sensor forms a one-dimensional array according to the time-minute sequence, and the relation of the one-dimensional array to time is/>Pulse value/>；/>Data number indicating tension measured at a certain time,/>Taking a natural number which is not zero;
；
For the tension pulse change value, the weight of the single oil pipe is set as/> The unit is N;
When (when) Greater than 0, and/>Judging the current state as oil pipe descending operation;
When (when) Less than 0, and/>Judging the current state as tubing operation;
When 10 are consecutive />Then the current state is determined as the pumping operation.
8. The work state pattern recognition system of claim 7, wherein a pumping weight recognition module is further provided;
the pumping weight identification module specifically comprises:
；
the quality of the oil discharged for a single pump; pulley winding between the first pulley and the second pulley is/> Root,/>Linear density of the pull rope, unit: kg/m; the stress included angle between the tension sensor and the rope is/>，°；/>A weight constant of 9.8N/Kg; /(I)The tension acquired by the tensiometer at a certain moment is N; /(I)For the depth of the pump to the wellhead at a certain moment, m.
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