CN112539813A - Real-time online measurement method for weight of drilling cuttings - Google Patents
Real-time online measurement method for weight of drilling cuttings Download PDFInfo
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- CN112539813A CN112539813A CN202011222405.1A CN202011222405A CN112539813A CN 112539813 A CN112539813 A CN 112539813A CN 202011222405 A CN202011222405 A CN 202011222405A CN 112539813 A CN112539813 A CN 112539813A
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- 238000005553 drilling Methods 0.000 title claims abstract description 18
- 238000000691 measurement method Methods 0.000 title claims abstract description 13
- 238000005520 cutting process Methods 0.000 title claims abstract description 9
- 239000011435 rock Substances 0.000 claims abstract description 55
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 230000001133 acceleration Effects 0.000 claims abstract description 28
- 239000012634 fragment Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 26
- 239000011295 pitch Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/02—Apparatus for or methods of weighing material of special form or property for weighing material of filamentary or sheet form
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a real-time online measurement method for the weight of drilling cuttings, which comprises the following steps: 1: setting a measurement time period, and acquiring the number of rotation turns of the spiral shaft in the measurement time period; 2: dividing the number of turns into a plurality of turning periods; 3: acquiring the initial weight and the real-time weight of the spiral conveyor at the starting moment and the ending moment of each rotation period, and the vibration acceleration at the starting moment and the vibration acceleration at the ending moment of each rotation period; calibrating the initial weight and the real-time weight to obtain an initial calibration weight and a real-time calibration weight, and then calculating the actual conveying weight of the rock debris in each rotation period; 4: and summing the actual conveying weight of the rock fragments in each rotation period to obtain the total weight of the rock fragments in the measurement time period. The invention has little change to the existing equipment and can realize the real-time on-line accurate measurement of the drilling return rock debris in the measuring time period according to the preset measuring time period.
Description
Technical Field
The invention relates to the technical field of petroleum drilling, in particular to a real-time online measurement method for the weight of drilling cuttings.
Background
Along with the continuous propulsion of shale gas exploration and development, major displacement wells and horizontal wells in Sichuan Yu areas, particularly three-dimensional cluster horizontal wells, are greatly increased, wherein 90% of horizontal wells for shale gas deployment are three-dimensional horizontal wells, and horizontal sections are longer and longer. In the well drilling of the horizontal well, detritus beds are easily formed at the positions of the lower well wall of the large-inclination section and the horizontal well section to be accumulated, so that friction resistance and torque are greatly increased, complex conditions such as drill sticking, pump holding and the like can be caused, the service life of a drilling tool and drilling safety are seriously influenced, and the engineering delay cost is increased. Meanwhile, the problems of difficult well logging tool running, difficult casing well cementing, poor well cementing quality and the like can be caused due to insufficient well cleaning. The measurement of the rock debris is one of key technologies for judging the return condition of the rock debris in the well in the drilling process, the surplus of the rock debris in the well can be represented through the measurement of the rock debris, engineering technicians can make measures in time, and underground accidents are reduced.
At present, according to the latest environmental protection requirement, the current drilling team is generally provided with a rock debris falling-proof device, namely, rock debris is conveyed by a screw conveyor, enters from a feeding hole at one end of the screw conveyor and is output from a discharging hole at the other end under the driving of a screw shaft. However, such screw conveyors generally only have a conveying function, and cannot perform online measurement on the conveyed rock debris in the conveying process, so that a new technology capable of realizing online measurement of the rock debris in the conveying process needs to be researched, so that the condition of the rock debris at the bottom of a well can be judged in real time, the safety of long-horizontal-section drilling is guaranteed, and the drilling efficiency is improved.
In addition, the prior art with publication number CN210719361U discloses a novel rock debris weighing device, which comprises a fixed support and a circular arc-shaped hopper, wherein the fixed support is integrally formed by a vertical support and two L-shaped supports, the hopper is arranged on the L-shaped support at the lower end of the fixed support, a weighing sensor is arranged at the joint of the hopper and the fixed support, proximity switches are arranged on two sides of the fixed support at the bottom of the hopper, the weighing sensor is connected with a display, a vibration motor is arranged at the bottom of the hopper, and a hydraulic rocker arm is arranged on the fixed support and used for connecting the fixed support and the hopper. Although the technology can detect the rock debris data in real time, equipment needs to be customized, the rock debris is required to be automatically turned and poured out after being filled into a set material level, the rock debris cannot enter the rock debris in the period of time, otherwise, the metering cannot be carried out, and the technical problem of discontinuous metering exists.
Disclosure of Invention
The invention aims to overcome the technical problems in the prior art and provides a real-time online measurement method for the weight of drilling cuttings.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a real-time online measurement method for the weight of drilling cuttings is characterized by comprising the following steps: the device comprises a processor, a screw conveyer, a longitudinal vibration sensor for acquiring the vibration acceleration of the screw conveyer, a weight sensor for acquiring the weight of the screw conveyer and a detector for acquiring the number of turns of a screw shaft; the spiral conveyor is respectively fixed on the two bases through two support columns, and the number of the weight sensors is two and the two weight sensors are respectively arranged below the support columns on the two bases; the weight of the spiral conveyor is the sum of the two weight sensors; the longitudinal vibration sensor is fixed on one of the support columns;
the real-time online measurement method comprises the following steps:
step 1: setting a measurement time period by a processor, and acquiring the number of turns of the spiral shaft in the measurement time period by a detector;
step 2: dividing the number of turns of the screw shaft into a plurality of rotation periods by a processor according to the number value of the screw pitch of the screw shaft;
and step 3: acquiring the initial weight of the screw conveyor at the starting moment and the real-time weight of the screw conveyor at the ending moment of each rotation period through a weight sensor, and acquiring the vibration acceleration of the screw conveyor at the starting moment and the vibration acceleration of the screw conveyor at the ending moment of each rotation period through a longitudinal vibration sensor; between two adjacent rotation periods, the real-time weight and the vibration acceleration of the screw conveyor at the end moment of the previous rotation period are the initial weight and the vibration acceleration at the start moment of the next rotation period; then, respectively calibrating the initial weight and the real-time weight by the processor according to the vibration acceleration to obtain an initial calibration weight and a real-time calibration weight, and calculating the actual conveying weight of the rock debris in each rotation period according to the initial calibration weight and the real-time calibration weight;
and 4, step 4: and summing the actual conveying weight of the rock fragments in each rotation period to obtain the total weight of the rock fragments in the measurement time period.
In the real-time online measurement method, when the numerical value of the rotating ring is integral multiple of the thread pitch numerical value of the spiral shaft, the last rotating period is a complete rotating period, and the actual conveying weight of the rock debris in each rotating period is summed to obtain the total weight of the rock debris in the measurement time period; when the numerical value of the rotating ring is not an integral multiple of the thread pitch numerical value of the spiral shaft, the last rotating period is an incomplete rotating period, at the moment, the real-time calibration weight of the spiral conveyor at the end of the last rotating period is used as the initial calibration weight of the incomplete rotating period, the real-time calibration weight of the spiral conveyor at the end of the measuring time period is combined to calculate the actual conveying weight of the rock debris in the incomplete rotating period, and then the total weight of the rock debris in the measuring time period is obtained by combining the actual conveying weights of the rock debris in the rest rotating periods and summing.
The dividing method of the step 2 comprises the following steps: starting from a measurement time period, accumulating the number of rotation turns of the screw shaft on the basis of an initial value, and taking a rotation period when the number of the accumulated rotation turns is equal to the number value of the thread pitch of the screw shaft; and then resetting the rotating circle value to the initial value and accumulating again to divide the next rotating period.
The initial value is 0.
The calibration method in the step 3 comprises the following steps:
G=G0*g/（g±g1）
in the formula, G represents the weight after calibration, G0 represents the weight before calibration, G represents the gravitational acceleration, and G1 represents the vibration acceleration in the longitudinal direction.
The detector is a spiral detector or a speed rotator, and when the detector is the spiral detector, the spiral detector is arranged above the spiral shaft; in the case of a tacho, the tacho is arranged on the rotational axis of the screw conveyor.
The spiral conveyor is provided with a feeding hole and a discharging hole, the feeding hole and the discharging hole are respectively arranged at the upper part and the lower part of the two ends of the spiral shaft, and the actual conveying weight of the rock debris in the previous rotation period is automatically output from the discharging hole when the later rotation period starts.
The invention has the advantages that:
1. the invention can realize real-time online automatic accurate measurement of the drilling return rock debris in any time period according to the preset measurement time period, record and store the rock debris weight value of each time point, can meet different monitoring requirements of field operators, and can provide effective basis for distinguishing the well bottom rock debris condition.
2. The invention has small modification to field equipment, can be realized by only adding a plurality of sensors, has strong field adaptability, and can simply and economically modify the field.
3. According to the invention, the rock debris weight sampling value of the discrete point is adopted to describe the rock debris weight of the whole measurement time period, and the control interference on the feeding port and the discharging port is not needed, so that the anti-interference capability is strong, and the weight value of the rock debris in the measurement time period can be obtained with high precision.
Drawings
FIG. 1 is a schematic structural view of the present invention;
labeled as: 1. the device comprises a screw conveyor, 2, a screw shaft, 3, a feeding hole, 4, a discharging hole, 5, a weight sensor, 6, a longitudinal vibration sensor, 7, a screw detector, 8, a rotating speed device, 9 and a supporting column.
Detailed Description
The invention discloses a real-time online measurement method of drilling debris weight, which comprises a processor, a screw conveyor 1, a longitudinal vibration sensor 6 for acquiring the vibration acceleration of the screw conveyor 1, a weight sensor 5 for acquiring the weight of the screw conveyor 1 and a detector for acquiring the number of rotation turns of a screw shaft 2, wherein the longitudinal vibration sensor 6 is used for acquiring the vibration acceleration of the screw conveyor 1; wherein, the screw conveyor 1 is provided with a feed inlet 3 and a discharge outlet 4, the feed inlet 3 and the discharge outlet 4 are respectively arranged at the upper part and the lower part of the two ends of the screw shaft 2 and are used for feeding and discharging rock debris; the spiral conveyor 1 is respectively fixed on two bases (not shown in the figure) through two support columns 9, and the number of the weight sensors 5 is two, and the two weight sensors are respectively arranged below the support columns 9 on the two bases; the weight of the screw conveyor 1 is the sum of the two weight sensors 5; the longitudinal vibration sensor 6 is fixed on one of the supporting columns 9; the detector is a spiral detector 7 or a rotating speed device 8, when the detector is the spiral detector 7, the spiral detector 7 is arranged above the spiral shaft 2, and the number of rotation turns is acquired by non-contact signals such as laser and the like; in the case of the tacho 8, the tacho 8 is provided on the rotating shaft of the screw conveyor 1. In addition, the processor can be processing equipment of a well site control center, the weight sensor 5, the longitudinal vibration sensor 6, the spiral detector 7/the speed rotator 8 are connected with the processor, and information collection, calculation and the like involved in the whole measurement process can be processed by the processor.
The real-time online measurement method comprises the following steps:
step 1: the measurement time period is set by the processor, and the number of rotations of the screw shaft 2 in the measurement time period is acquired by the detector.
Step 2: the number of turns is divided into a plurality of turn periods in time sequence by a processor based on the magnitude of the pitch of the screw shaft 2. The specific dividing method comprises the following steps: setting an initial value and assigning the initial value as 0, firstly accumulating the number of rotation turns of the screw shaft 2 on the basis of the initial value from the beginning of the measurement time period, and setting the rotation period when the number of the accumulated rotation turns is equal to the number value of the screw pitch of the screw shaft 2; and then resetting the numerical value of the rotation circle to the initial value and accumulating again, and dividing the next rotation period to divide a plurality of rotation periods.
In this step, the number of screw pitches of the screw shaft 2 refers to the number of pitches between the screw teeth on the screw shaft 2, and the specific data thereof can be obtained according to the screw shaft 2 actually used. The rotation period is divided according to the thread pitch quantity value of the screw shaft 2, so that all the rock debris in the previous rotation period can be just output from the discharge hole 4 when the next rotation period starts.
And step 3: the initial weight of the screw conveyor 1 at the start time and the real-time weight at the end time of each rotation cycle are acquired by the weight sensor 5, and the vibration acceleration of the screw conveyor 1 at the start time and the vibration acceleration at the end time of each rotation cycle are acquired by the longitudinal vibration sensor 6. Since the rotation periods are continuous, the real-time weight and vibration acceleration of the screw conveyor 1 between two adjacent rotation periods at the end of the previous rotation period are the initial weight and vibration acceleration at the start of the next rotation period. After the acquisition is finished, the processor calibrates the corresponding initial weight and the corresponding real-time weight respectively according to the vibration acceleration to obtain an initial calibration weight and a real-time calibration weight, and then calculates the actual conveying weight of the rock debris in each rotation period in a mode of subtracting the initial calibration weight from the real-time calibration weight according to the initial calibration weight and the real-time calibration weight. Wherein the actual conveying weight of the rock debris in the previous rotation period is automatically output from the discharge port 4 of the screw conveyor 1 at the beginning of the following rotation period.
In this step, the calibration method comprises:
G=G0*g/（g±g1）
in the formula, G represents the weight after calibration, G0 represents the weight before calibration, G represents the acceleration of gravity, G1 represents the acceleration of vibration in the longitudinal direction, and ± represents the acceleration direction downward or upward.
And 4, step 4: and summing the actual conveying weight of the rock fragments in each rotation period to obtain the total weight of the rock fragments in the measurement time period.
In the invention, when the numerical value of the rotating ring is integral multiple of the thread pitch numerical value of the spiral shaft 2, the last rotating period is a complete rotating period, and the total weight of the rock debris in the measuring time period is obtained by summing the actual conveying weight of the rock debris in each rotating period; when the numerical value of the thread pitch of the spiral shaft 2 is not an integral multiple of the numerical value of the rotating ring, the last rotating period is an incomplete rotating period, at the moment, the real-time calibration weight of the spiral conveyor 1 at the end of the last rotating period is used as the initial calibration weight of the incomplete rotating period, the real-time calibration weight of the spiral conveyor 1 at the end of the measuring time period is combined to calculate the actual conveying weight of the rock debris in the incomplete rotating period, and finally the total weight of the rock debris in the measuring time period is obtained by combining the actual conveying weights of the rock debris in the rest rotating periods and summing.
When the numerical value of the rotating ring is not the integral multiple of the thread pitch numerical value of the screw shaft 2, the last rotating period is an incomplete rotating period, and then the calculation method of the actual conveying weight of the rock debris in the incomplete rotating period is as follows:
setting the number value of the screw pitch of the screw shaft as n, the number value of the rotation circle acquired at the end moment of the measurement time period as m, the real-time calibration weight at the end moment of the measurement time period as G2, the real-time calibration weight at the end moment of the previous rotation period as G1, and the real-time calibration weight G1 as the initial calibration weight at the start moment of the incomplete rotation period, so that the actual conveying weight in the incomplete rotation period is as follows:
M=m/n*（G2-G1）
where M represents the actual delivered weight during the incomplete rotation cycle.
Finally, the applicant sets a measuring time period of 1 hour from any time to test by adopting the method, sets a storage tank at the discharge port 4 to collect and verify, and finally compares the two to know that the metering accuracy of the method can reach 1 percent, the accuracy is high, and the method can effectively provide a basis for distinguishing the condition of the rock debris at the bottom of the well.
While the invention has been described with reference to specific embodiments, any feature disclosed in this specification may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.
Claims (7)
1. A real-time online measurement method for the weight of drilling cuttings is characterized by comprising the following steps: the device comprises a processor, a screw conveyor (1), a longitudinal vibration sensor (6) for acquiring the vibration acceleration of the screw conveyor (1), a weight sensor (5) for acquiring the weight of the screw conveyor (1) and a detector for acquiring the number of turns of a screw shaft (2); the spiral conveyor (1) is respectively fixed on the two bases through two support columns (9), and the number of the weight sensors (5) is two and the two weight sensors are respectively arranged below the support columns (9) on the two bases; the weight of the screw conveyor (1) is the sum of the two weight sensors (5); the longitudinal vibration sensor (6) is fixed on one of the supporting columns (9);
the real-time online measurement method comprises the following steps:
step 1: setting a measurement time period by a processor, and acquiring the number of turns of the spiral shaft (2) in the measurement time period by a detector;
step 2: dividing the number of turns of the screw shaft (2) into a plurality of turning periods by a processor according to the number of the screw pitches;
and step 3: acquiring the initial weight and the real-time weight of the spiral conveyor (1) at the starting moment and the ending moment of each rotation period through a weight sensor (5), and acquiring the vibration acceleration of the spiral conveyor (1) at the starting moment and the vibration acceleration at the ending moment of each rotation period through a longitudinal vibration sensor (6); between two adjacent rotation periods, the real-time weight and the vibration acceleration of the screw conveyor (1) at the end moment of the previous rotation period are the initial weight and the vibration acceleration at the start moment of the next rotation period; then, respectively calibrating the initial weight and the real-time weight by the processor according to the vibration acceleration to obtain an initial calibration weight and a real-time calibration weight, and calculating the actual conveying weight of the rock debris in each rotation period according to the initial calibration weight and the real-time calibration weight;
and 4, step 4: and summing the actual conveying weight of the rock fragments in each rotation period to obtain the total weight of the rock fragments in the measurement time period.
2. The method of claim 1, wherein the method comprises the following steps: in the real-time online measurement method, when the numerical value of the rotating ring is integral multiple of the thread pitch numerical value of the spiral shaft (2), the last rotating period is a complete rotating period, and the total weight of the rock debris in the measurement time period is obtained by summing the actual conveying weight of the rock debris in each rotating period; when the numerical value of the thread pitch of the spiral shaft (2) is not an integral multiple of the numerical value of the rotating ring, the last rotating period is an incomplete rotating period, at the moment, the real-time calibration weight of the spiral conveyor (1) at the end of the last rotating period is used as the initial calibration weight of the incomplete rotating period, the real-time calibration weight of the spiral conveyor (1) at the end of the measuring time period is combined to calculate the actual conveying weight of the rock debris in the incomplete rotating period, and the total weight of the rock debris in the measuring time period is obtained by combining the actual conveying weights of the rock debris in the rest rotating periods and summing.
3. The method of claim 1, wherein the method comprises the following steps: the dividing method of the step 2 comprises the following steps: from the beginning of the measuring time period, accumulating the number of turns of the screw shaft (2) on the basis of the initial value, and taking one turn cycle every time when the accumulated number of turns equals the number of pitches of the screw shaft (2); and then resetting the rotating circle value to the initial value and accumulating again to divide the next rotating period.
4. The method of claim 3, wherein the weight of the drill cuttings is measured in real time on-line, and the method comprises the following steps: the initial value is 0.
5. A method for real-time on-line measurement of weight of drill cuttings as claimed in any of claims 1-4, wherein: the calibration method in the step 3 comprises the following steps:
G=G0*g/（g±g1）
in the formula, G represents the weight after calibration, G0 represents the weight before calibration, G represents the gravitational acceleration, and G1 represents the vibration acceleration in the longitudinal direction.
6. The method of claim 1, wherein the method comprises the following steps: the detector is a spiral detector (7) or a speed rotating device (8), and when the detector is the spiral detector (7), the spiral detector (7) is arranged above the spiral shaft (2); in the case of the speed changer (8), the speed changer (8) is arranged on the rotating shaft of the screw conveyor (1).
7. The method of claim 1, wherein the method comprises the following steps: the spiral conveyor (1) is provided with a feeding hole (3) and a discharging hole (4), the feeding hole (3) and the discharging hole (4) are respectively arranged at the upper part and the lower part of the two ends of the spiral shaft (2), and the actual conveying weight of the rock debris in the previous rotation period is automatically output from the discharging hole (4) when the later rotation period starts.
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| CN202011222405.1A CN112539813B (en) | 2020-11-05 | 2020-11-05 | Real-time online measurement method for weight of drilling cuttings |
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| CN202011222405.1A CN112539813B (en) | 2020-11-05 | 2020-11-05 | Real-time online measurement method for weight of drilling cuttings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114062183A (en) * | 2021-10-15 | 2022-02-18 | 中国石油天然气集团有限公司 | Circularly-metered rock debris real-time weighing method |
| CN114061717A (en) * | 2021-10-15 | 2022-02-18 | 中国石油天然气集团有限公司 | Spiral continuous weighing method for rock debris |
| CN116969132A (en) * | 2023-08-17 | 2023-10-31 | 无锡时代桃源环保设备有限公司 | Online metering method and system for total output amount of pretreated impurities |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116969132B (en) * | 2023-08-17 | 2024-06-04 | 无锡时代桃源环保设备有限公司 | Online metering method and system for total output amount of pretreated impurities |
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| CN112539813B (en) | 2021-09-17 |
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