Drilling liquid flow amount detecting device
Technical field
This utility model relates to drilling engineering field, especially relates to a kind of drilling liquid flow amount detecting device.
Background technology
In drilling process, the discovery in time of the abnormal phenomenas such as overflow, well kick, leakage plays important work for safety drilling
With.The accurately detection of drilling fluid gateway flow is one of important means finding above abnormal phenomena.Conventional outlet flow is examined
Surveying and generally use target type meter to measure, rely on the impulsive force of outlet drilling fluid to make gear target position change, drive can power transformation
Hinder and rotate, generation signal intensity, thus reflection exports the changes in flow rate of drilling fluid indirectly, but it is tired to there is installation in applying at the scene
The shortcomings such as difficulty, data are untrue, environmental effect is big.The detection of on-the-spot inlet flow rate is according to drilling fluid pump parameter, jig frequency detection
Theoretical Calculation obtains, and the accuracy of detection also can be pre-by the actually water efficiency of drilling fluid pump jig frequency number detection case, pump
The impact of the factors such as measured value, also exists unstability.We have invented a kind of new drilling liquid flow amount detecting device for this, solve
Above technical problem.
Utility model content
The purpose of this utility model be to provide a kind of can detection by quantitative drilling fluid outlet and the flow of entrance, additionally it is possible to logical
Cross the contrast to outlet and the data such as inlet flow rate, cumulative volume and realize the accurate forecast of the abnormal conditions such as overflow, well kick, leakage
Drilling liquid flow amount detecting device.
The purpose of this utility model can be achieved by the following technical measures: drilling liquid flow amount detecting device, this drilling fluid
Flow detector includes inlet flow rate detection device probe, supersonic range finder, rate of discharge detection device probe, entrance
Flow data collector processing module, rate of discharge digital sampling and processing, logging data collecting system and down-hole complexity feelings
Condition analyzes system, and this inlet flow rate detection device probe is arranged on drilling fluid inlet duct, detection drilling fluid inlet duct
Rate of flow of fluid, this supersonic range finder, this rate of discharge detection device probe is separately mounted on drilling fluid outlet pipeline, should
The rate of flow of fluid of rate of discharge detection device probe detection drilling fluid outlet pipeline, this supersonic range finder is measured drilling fluid and is gone out
The height of mouth pipeline liquid level, this inlet flow rate digital sampling and processing is connected to this inlet flow rate detection device probe, and will
The fluid flow rate data of drilling fluid inlet duct carries out signal processing, and this rate of discharge digital sampling and processing is connected to
This supersonic range finder, this rate of discharge detection device probe, by fluid flow rate data and the drilling well of drilling fluid outlet pipeline
The altitude information of liquid outlet conduit liquid level carries out signal processing, and this logging data collecting system is connected to this inlet flow rate data
Acquisition processing module and this rate of discharge digital sampling and processing, and the signal that they export is transferred to this down-hole complexity feelings
Condition analyzes system, and this down hole problem is analyzed system and is connected to this logging data collecting system, carries out data storage, shows
Show, play back, analyze.
The purpose of this utility model realizes also by following technical measures:
This inlet flow rate detection device probe includes transmitting probe and receiving transducer, and this transmitting probe and this receiving transducer divide
It is not fixed to the both sides of drilling fluid suction line with clamp and ultrasonic coupling agent and complies with the direction of drilling fluid flowing.
This rate of discharge detection device probe includes a transmitting probe and two receiving transducers, is installed in drilling fluid and goes out
The direction of drilling fluid flowing complied with by mouth pipeline, and this transmitting probe is arranged on centre, and said two receiving transducer is separately mounted to two
Side.
This drilling liquid flow amount detecting device also includes explosion-proof tank, this inlet flow rate digital sampling and processing and this outlet stream
Amount digital sampling and processing is encapsulated in this explosion-proof tank, and this inlet flow rate digital sampling and processing is by drilling fluid inlet duct
Fluid flow rate data carry out shaping filter, single-chip data process, moving average, 485 isolation signals output, analogue signal defeated
Going out, this rate of discharge digital sampling and processing is by the fluid flow rate data of drilling fluid outlet pipeline and drilling fluid outlet pipeline liquid
The altitude information in face carry out shaping filter, single-chip data process, moving average, 485 isolation signals output, analogue signal defeated
Go out.
This explosion-proof tank includes detecting device probe, this supersonic range finder, this rate of discharge with this inlet flow rate respectively
The connection jaws that detection device probe connects, 485 buses being connected with this logging data collecting system and 4-20mA simulation output
Interface.
This inlet flow rate digital sampling and processing and this rate of discharge digital sampling and processing are made in same circuit
On plate, or make a plate respectively.
This inlet flow rate digital sampling and processing and this rate of discharge digital sampling and processing use and this logging
The 24V direct current supply that data collecting system is supporting, this inlet flow rate detection device probe, this supersonic range finder, this outlet
Flow detector probe uses positive 15V direct current supply.
This inlet flow rate detection device probe is connected to this inlet flow rate digital sampling and processing by shielding line, and this surpasses
Sound ranging device, this rate of discharge detection device probe is connected to this rate of discharge data acquisition process by shielding line respectively
Module.
This logging data collecting system is analyzed system by netting twine or RS232 with this down hole problem and is carried out data biography
Defeated, this down hole problem is analyzed system and is shown and store real time data, and the coefficient individually controlling entrance and exit is arranged, and carries out
Data readback and curve play back, and the flow curve of real-time rendering drilling fluid entrance and exit, and calculating a period of time passes through entrance
With the fluid cumulative volume number of outlet conduit, and realize down-hole complexity feelings by two curves or cumulative volume number are carried out contrast
Condition forecast analysis.
Drilling liquid flow amount detecting device in this utility model, quantitative detection drilling fluid entrance and exit flow, replace
Conventional outlet uses the method that target type meter, entrance use Theoretical Calculation, fundamentally improves the precision of flow detection,
Achieve whole quantitative analyses of well control information, it is possible to realize Real_time quantitative detection and the analysis of drilling fluid entrance and exit, right
Significant in the discovery of the abnormal conditions such as overflow, well kick, leakage, for oil-gas exploration have significant economic benefit and
Social benefit.
Accompanying drawing explanation
Fig. 1 is the structure chart of a specific embodiment of drilling liquid flow amount detecting device of the present utility model.
Detailed description of the invention
For making above and other objects, features and advantages of the present utility model to become apparent, cited below particularly go out preferably
Embodiment, and coordinate shown in accompanying drawing, it is described in detail below.
As it is shown in figure 1, the structure chart that Fig. 1 is drilling liquid flow amount detecting device of the present utility model.This mud flow rate is examined
Survey device by inlet flow rate detection device probe 3, supersonic range finder 4, rate of discharge detection device probe 5, inlet flow rate
Digital sampling and processing 6, rate of discharge digital sampling and processing 7, explosion-proof tank 8, logging data collecting system 9, down-hole
Complex situations are analyzed system 10 and are formed.
Inlet flow rate detection device probe 3 is installed on drilling fluid inlet duct 1, by shielding line and inlet flow rate data
Acquisition processing module 6 connects.The rate of flow of fluid of inlet flow rate detection device probe 3 detection drilling fluid inlet duct 1.Implement one
In example, inlet flow rate detection device probe 3 employing Doppler ultrasound velocimetry mode, drilling fluid is solid-liquid-gas three phase fluid, meets
The condition of Doppler's velocity measurement.Inlet flow rate detection device probe 3 comprises a transmitting probe and a receiving transducer, is arranged on
The direction of drilling fluid flowing is complied with in drilling fluid inlet duct 1 both sides, adds secure fit tube wall after ultrasonic coupling agent.Because of drilling fluid
Inlet duct 1 and slush pump are Hard link, and vibrations are strong in the course of the work, and inlet flow rate detection device probe 3 needs to use
Fixture is fixed.In drilling process, drilling fluid suction line is full packages, and inlet flow rate is Inlet fluid flowing velocity and entrance
The product that line cross-section is long-pending.
Inlet flow rate digital sampling and processing 6 is connected to inlet flow rate detection device probe 3, receives its brill detected
The rate of flow of fluid of well liquid inlet duct 1.In one embodiment, inlet flow rate digital sampling and processing 6 uses and joins with logging
The 24V of set powers, and by if the circuit such as lm2576 are to the inlet flow rate detection device probe 3 positive 15V direct current supply of offer.Entrance stream
Amount digital sampling and processing 6 has shaping filter, single-chip data process, moving average, 485 isolation signals outputs, simulation
The functions such as signal output.
Supersonic range finder 4, rate of discharge detection device probe 5 is respectively installed on drilling fluid outlet pipeline 2, passes through
Shielding line is connected with rate of discharge digital sampling and processing 7.Rate of discharge detection device probe 5 detection drilling fluid outlet pipeline
The rate of flow of fluid of 2.In one embodiment, the general not full packages of drilling fluid outlet pipeline, outlet flow measurement uses ultrasound wave how general
Le test the speed and supersonic range finder combine calculate, rate of discharge detection device probe 5 there is a transmitting probe and two connect
Receiving probe, be installed in drilling fluid outlet pipeline 2 and comply with the direction of drilling fluid flowing, transmitting probe is arranged on centre, and two connect
Receiving probe and be separately mounted to both sides, supersonic range finder 4 is arranged on the upside of pipeline, it is desirable to precision must reach grade, disappears
Except the arc pipe impact on measurement result when flow is less, calculate according to the liquid level that supersonic range finder 4 is measured
The sectional area of fluid in drilling fluid outlet pipeline 2, is multiplied by flow velocity and is rate of discharge.
Supersonic range finder 4 measures the height of drilling fluid outlet pipeline 2 liquid level.Measured by supersonic range finder 4
The liquid level of drilling fluid outlet pipeline 2 calculate the cross-sectional area of fluid in pipeline.
When drilling fluid height accounts for the half of caliber, formula is:
S=π D2/8
When drilling fluid height is less than or greater than the half of caliber, formula is:
In formula, S flow cross-sectional area;
D caliber;
D drilling fluid height;
A pipeline center and the angle of liquid level line.
Rate of discharge digital sampling and processing 7 is connected to supersonic range finder 4, rate of discharge detection device is visited
5, receive the rate of flow of fluid of the drilling fluid outlet pipelines 2 that rate of discharge detection device probe 5 detects, supersonic range finder
4 height measuring drilling fluid outlet pipeline 2 liquid level arrived.In one embodiment, rate of discharge digital sampling and processing 7 uses
The 24V supporting with logging powers, and by if the circuit such as lm2576 are to the rate of discharge detection device probe 5 positive 15V direct current of offer
Power supply.Rate of discharge digital sampling and processing 7 has shaping filter, single-chip data process, moving average, 485 isolation letters
Number function such as output, analog signal output.
Inlet flow rate digital sampling and processing 6 and rate of discharge digital sampling and processing 7 both can be made in same electricity
On the plate of road, it is also possible to make a plate respectively, entrance and exit can each form flow transducer and go forward side by side row number and simulate output.
Inlet flow rate digital sampling and processing 6 and rate of discharge digital sampling and processing 7 are encapsulated in explosion-proof tank 8,
Explosion-proof tank 8 makes according to standards such as ExnRIb, IP67, has inlet flow rate detection device probe 3, rate of discharge detection device spy
5 and the connection jaws of supersonic range finder 4, also there are 485 buses and the interface of 4-20mA simulation output.Explosion-proof tank 8 is by 485
Bus or 4-20mA analog signal line are connected with logging data collecting system 9.
Logging data collecting system 9 is connected to down hole problem and analyzes system 10, sends data to host computer
Down hole problem analyzes system 10.In one embodiment, transmitted to down hole problem by the mode such as netting twine or RS232 and divide
Analysis system 10 carry out data storage, show, play back, the operation such as analysis.
Down hole problem is analyzed system 10 and can be shown and store real time data, individually controls the coefficient of entrance and exit
Arrange.Data readback and curve playback, and the flow curve of real-time rendering drilling fluid entrance and exit can be carried out, calculate one section
The time fluid cumulative volume number by Inlet and outlet pipe, has by contrasting two curves or cumulative volume number
Realize the function of down hole problem forecast analysis.Analyze system 10 software by down hole problem and complete drilling fluid at PC end
The work such as the record of data on flows, monitoring and down hole problem analysis, meet the demand of the work such as drilling well control.