CN115217427B - Oil gas exploration gas drilling dust device - Google Patents
Oil gas exploration gas drilling dust device Download PDFInfo
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- CN115217427B CN115217427B CN202110406487.3A CN202110406487A CN115217427B CN 115217427 B CN115217427 B CN 115217427B CN 202110406487 A CN202110406487 A CN 202110406487A CN 115217427 B CN115217427 B CN 115217427B
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/07—Arrangements for treating drilling fluids outside the borehole for treating dust-laden gaseous fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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Abstract
The invention provides an oil-gas exploration gas drilling dust settling device which comprises a main body, a main body fixing piece, a dust settling unit, a circulating unit, a gas flow sensor, a rock debris particle concentration sensor and a control box, wherein the main body fixing piece can connect the main body with a rock debris discharge pipe outlet, the dust settling unit comprises a water inlet main pipe, a plurality of groups of atomizing water inlet pipes and a plurality of groups of atomizing spray heads connected to the water inlet main pipe, the circulating unit comprises a collecting circulating pool arranged below the main body outlet, a control valve and a water adding pump arranged at one end of the water inlet main pipe, and a circulating water adding pipe, the water inlet main pipe is communicated with the collecting circulating pool, the gas flow sensor and the rock debris particle concentration sensor are respectively arranged at the inlet and the outlet of the main body, and the control box can control the starting, stopping and the water inlet amount of the water adding pump and the control valve according to the results of the gas flow sensor and the rock debris particle concentration sensor. The invention can save manpower, obviously reduce the concentration of rock debris and dust at the outlet and ensure clean production of gas drilling operation.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas exploitation gas drilling dust control equipment, in particular to a gas oil exploitation gas drilling dust settling device.
Background
In order to reduce the damage to the stratum and solve the technical problems of easy leakage and low drilling speed of the stratum, an underbalanced technology which uses light fluid such as air, nitrogen and the like as a circulating medium is developed and widely applied. When the gas drilling is utilized to perform operation, the air and the nitrogen are used as media, so that the drilling speed is greatly improved, the gas density used as a circulating medium is low, the pressure formed on a well hole is low, the leakage of drilling fluid does not exist in the drilling process, the problem of lost circulation of long-section complex stratum can be effectively solved, the lost circulation complex loss is greatly reduced, the drilling engineering progress is accelerated, and the oil and gas exploration benefit is improved.
However, air drilling brings great economic benefit and corresponding environmental pollution. During air drilling operations, the fluid (air and drill cuttings dust mixture) returning from the well must enter the surface recovery tank through the drainage pipeline. In order to carry cuttings effectively, the field use of the drainage pipeline is mostly a casing of diameter l78mm or 244 mm. The cuttings discharged from the discharge line are typically dry cuttings dust, and the dust carried by the high velocity air stream is dissipated around, severely contaminating the environment and affecting the physical health of the personnel on site. Because of the site and period limitation of the drilling site, it is impossible to adopt complicated dust removing devices such as electric dust removing devices, and common dust removing facilities such as bag type dust collectors, internal devices can be rapidly scratched through by high-speed rock fragments carrying sharp edges and corners.
At present, when air drilling is carried out, a water pipeline is directly installed on an opening hole of a rock discharge pipeline, and the influence of dust is reduced by a water injection method. For example, patent application documents, which are disclosed in 2011, 8 and 24 and are entitled gas drilling dust settling device and publication number CN 201943615U, describe a gas drilling dust settling device comprising an outer cylinder and an inner cylinder, wherein the dust settling device is connected with a sand discharge pipe through a flange plate, the outer cylinder and the inner cylinder are connected through a ring plug to form an annular space, a water filling port is arranged at the upper part of the outer cylinder, a plurality of flushing ports are arranged at the lower part of the outer cylinder, a plurality of spiral-distributed injection holes are arranged on the inner cylinder to inject water flow into the device, and dust sprayed by the sand discharge pipe is settled. Although the dust settling device has a certain dust settling effect, the water consumption is large, the concentration of the rock debris and dust at the outlet cannot be obviously reduced, the dust settling device is not suitable for the production process of a drilling site, the drilling process is required to be followed by manpower for 24 hours, and the starting and stopping of the control equipment are controlled.
Therefore, it is necessary to invent a gas drilling dust-settling device capable of ensuring clean production in a gas drilling period, reducing the influence on the quality of air and ensuring normal production of gas drilling.
Disclosure of Invention
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, it is an object of the present invention to provide a gas drilling dust settling device capable of remarkably reducing the concentration of rock dust during gas drilling, ensuring clean production during gas drilling, and reducing the influence on air quality.
In order to achieve the above purpose, the invention provides an oil and gas exploration gas drilling dust device, which comprises a main body, a main body fixing piece, a dust falling unit, a circulating unit, a gas flow sensor, a rock debris particle concentration sensor and a control box, wherein the main body is of a reducing cylindrical structure and is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis, the outer diameter of the first cavity is smaller than that of the third cavity, the outer diameter of the second cavity is gradually increased from the outer diameter of the first cavity to the outer diameter of the third cavity along a direction of 30-45 degrees with the first central axis, and a plurality of groups of first open holes and second open holes which are symmetrical along the first central axis are formed in two sides of the main body; the main body fixing piece is arranged at one end of the main body, which is close to the first cavity, and can connect the main body with the outlet of the rock debris discharging pipe; the dust settling unit comprises a main water inlet pipe, a plurality of groups of atomizing water inlet pipes and a plurality of groups of atomizing spray heads, wherein the main water inlet pipe is arranged above the main body and is provided with a second central axis parallel to the first central axis, each group of atomizing water inlet pipes comprises two atomizing water inlet branch pipes symmetrically distributed along the second central axis, each atomizing water inlet branch pipe is provided with an extending section along the horizontal direction and a bending section which is 45-65 degrees with the first central axis along the vertical direction, the extending section is fixedly connected with the main water inlet pipe, the bending section extends into the main body from a first opening or a second opening, the tail end of the bending section is connected with the atomizing spray heads, and the atomizing spray heads can spray water mist to the central area of the main body so as to moisten the rock dust mist and form a descending trend at the outlet of the main body; the circulating unit comprises a collecting and circulating pool, a control valve, a water adding pump and a circulating water adding pipe, wherein the collecting and circulating pool is arranged below the outlet of the main body and can accommodate and collect rock scraps after dust fall treatment, clear water is stored in the collecting and circulating pool, one end of the circulating water adding pipe is connected with a water inlet main pipe, the other end of the circulating water adding pipe stretches into the pool bottom of the collecting and circulating pool, the water adding pump and the control valve are both arranged at one end of the water inlet main pipe, which is close to the outlet of the rock scraps discharging pipe, the water adding pump can pump pool water in the collecting and circulating pool to a water inlet main pipe along the circulating water adding pipe, and the control valve can be communicated with the water inlet main pipe and the collecting and circulating pool so as to provide injection water for the atomizing water inlet pipe; the gas flow sensor is arranged in the first cavity and can monitor the flow of the gas with the flow rate of 80-130 m/min and transmit the flow to the control box; the rock debris particle concentration sensor is arranged in the central area at the rear end of the third cavity and can monitor the rock debris particle concentration of the fluid and transmit the rock debris particle concentration to the control box; one end of the control box is connected with the gas flow sensor, the other end of the control box is connected with the control valve and the water adding pump, the control box can carry out linkage control on the control valve and the water adding pump after receiving signals of the gas flow sensor so that the control valve and the water adding pump are in an open state or a closed state, and the control box can carry out linkage control on the control valve and the water adding pump after calculating feedback control adjustment parameters according to monitoring results of the rock debris particle concentration sensor so as to adjust water supply intensity of a water inlet main pipe.
In an exemplary embodiment of the present invention, the diameter of the main water inlet pipe may be 108mm to 133mm, the diameters of the plurality of groups of atomized water inlet branches may be 50mm to 70mm, the length of the extension section may be 180 mm to 250mm, and the length of the bending section may be 300 mm to 350mm.
In an exemplary embodiment of the present invention, the outer diameter of the first cavity may be 240 to 250mm, the length of the first cavity may be 0.8 to 1.2m, the outer diameter of the third cavity may be 400 to 500mm, the length of the third cavity may be 1.5 to 2.4m, the flow rate of the water pump may be 40 to 80L/min, and the diameter of the circulation water supply pipe may be 25 to 38mm.
In an exemplary embodiment of the present invention, the collecting and circulating tank may have a length of 20m to 30m, a width of 10m to 20m, and a height of 1.5m to 2m.
In an exemplary embodiment of the present invention, a filtrate collecting and circulating tank formed of a multi-surface water filtering screen may be provided in the collecting and circulating tank, the length of the filtrate collecting and circulating tank may be 1m to 2m, the width may be 1m to 2m, the height may be 1.5m to 2m, and the mesh pore diameter of the water filtering screen may be 0.05cm to 0.1cm.
In an exemplary embodiment of the present invention, the bending section may be disposed at 50 ° to 60 ° from the first central axis in the vertical direction.
In an exemplary embodiment of the present invention, the gas drilling dust settling device may include a gas flow sensor disposed in the first cavity, and a center of a center region of the debris particle concentration sensor disposed at a rear end of the third cavity is located at an outer diameter of the third cavity, which is parallel to the first central axis and is located 0.1 to 0.2 times below the first central axis, and has a diameter of 0.2 to 0.4 times.
In an exemplary embodiment of the present invention, the algorithm for calculating the feedback control adjustment parameter by the control box according to the monitoring result of the rock debris particle concentration sensor is as follows:
P increase the number of ＝α(C Real world -C Label (C) )/C Label (C)
Wherein P is Increase the number of Percent, C, percent of increase in water supply intensity Real world Mg/m for the actual measured concentration of cuttings particles 3 ，C Label (C) For the concentration of cuttings particles after target treatment, mg/m 3 Alpha is a correction coefficient, and the value range is 0.3-0.6.
In an exemplary embodiment of the present invention, the gas drilling dust settling device may include a plurality of sets of support columns disposed below the main body at intervals from left to right, each set of support columns including two circular tubes having an outer diameter of 140mm to 110mm.
In an exemplary embodiment of the present invention, the rear end of the third cavity may be provided with an impact baffle plate along a direction of 35 ° to 60 ° with respect to the first central axis, and a surface of the impact baffle plate is provided with a wear-resistant lining, and the wear-resistant lining is sprayed with a ceramic coating.
In an exemplary embodiment of the present invention, the number of the atomizing inlet pipes may be equal to or greater than three groups, and the number of the atomizing nozzles may be equal to or greater than three groups.
In an exemplary embodiment of the present invention, the number of the support columns may be equal to or greater than two groups.
The benefits and advantages of the present invention over the prior art may include at least one of the following:
(1) According to the invention, through optimizing parameters such as a main body expansion structure, an angle of inserting an atomization water inlet branch pipe into a main body and the like, the concentration of rock debris dust at an outlet is obviously reduced, the comprehensive dust removal efficiency reaches more than 99%, the influence of high-speed rock debris dust generated during gas drilling on the environment is effectively reduced during operation, and the clean production of gas drilling operation is ensured;
(2) The invention controls the start and stop of the pump and the valve through the gas flow sensor, saves labor, and can adapt to the production process of the drilling site, follow the drilling process in real time and control the start and stop of the gas dust settling device;
(3) The circulating unit provided by the invention can realize the recycling of water, is ecological and environment-friendly, has economic benefits, and can control the water inflow of the water inlet main pipe in real time according to the signals transmitted by the rock debris particle concentration sensor so as to adapt to different gas drilling working conditions, thereby being beneficial to saving electric energy and water consumption.
Drawings
FIG. 1 illustrates a schematic elevational structural view of a gas drilling and dustfall apparatus for hydrocarbon exploration in accordance with an exemplary embodiment of the present invention;
FIG. 2 illustrates a schematic top view of a gas drilling and dustfall apparatus for hydrocarbon exploration in accordance with an exemplary embodiment of the present invention.
The reference numerals are explained as follows:
the device comprises a 1-magnetic pump, a 2-circulating water adding pipe, a 3-electromagnetic valve, a 4-water inlet main pipe, a 5-primary atomization water inlet branch pipe, a 6-secondary atomization water inlet branch pipe, a 7-tertiary atomization water inlet branch pipe, an 8-main body fixing flange, a 9-gas flow sensor, a 10-primary atomization spray head, a 11-secondary atomization spray head, a 12-tertiary atomization spray head, a 13-wear-resistant lining, a 14-supporting upright post, a 15-water filtering screen, a 16-collecting circulation tank, a 17-control box, an 18-main body and a 19-rock debris particle concentration sensor.
Detailed Description
Hereinafter, the oil and gas exploration gas drilling dust suppression device of the present invention will be described in detail with reference to exemplary embodiments. Herein, "first," "second," and "third" are merely for convenience of description and for convenience of distinction, and are not to be construed as indicating or implying relative importance or strict order.
Example 1
In one exemplary embodiment of the invention, the invention provides a gas drilling and dust settling device for oil and gas exploration. The oil and gas exploration gas drilling dust device can comprise a main body, a main body fixing piece, a dust falling unit, a circulating unit, a gas flow sensor, a rock debris particle concentration sensor and a control box.
The main body is of a reducing cylindrical structure and is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis. Here, left to right refers to a direction in which the cuttings are discharged from the cuttings discharge pipe outlet to the cuttings collection pit. The outer diameter of the first cavity is smaller than that of the third cavity, and the outer diameter of the second cavity is gradually increased from the outer diameter of the first cavity to that of the third cavity along the direction of 30-45 degrees relative to the first central axis.
That is, the main body has a diverging structure, the outer diameter of the first cavity is consistent with the outer diameter of the rock discharging pipeline, and the main body can be connected with a rock discharging sleeve with the outer diameter of 244mm, and if the outer diameter of the rock discharging pipeline at a construction site is 178mm, the front end of the first cavity can be connected with a conversion joint, so that the main body can be connected with the rock discharging sleeve with the outer diameter of 178 mm. The cross section of the second cavity is gradually increased, so that the flow velocity of the rock dust mist can be reduced, and the rock dust mist can be fully combined with the water mist in the third cavity.
Further, the outer diameter of the first cavity may be 240mm to 250mm, the length of the first cavity may be 0.8m to 1.2m, the outer diameter of the third cavity may be 400mm to 500mm, and the length of the third cavity may be 1.5m to 2.4m. The ratio of the lengths of the first cavity to the third cavity may be 1:1.5 to 1:3.5. for example, the body may be formed by welding two sections of 304L stainless steel cylinders having a diameter of 400mm and a diameter of 244mm, wherein the outer diameter of the first cavity may be 240mm, the length of the first cavity may be 0.8m, the outer diameter of the third cavity may be 400mm, the length of the third cavity may be 1.5m, the outer diameter of the second cavity gradually increases from 244mm to 400mm in a direction of 30 ° from the first central axis, and the length of the second cavity may be 0.135m.
The both sides of main part have seted up multiunit along first central axis symmetry's first trompil and second trompil.
The main body fixing piece is arranged at one end of the main body, which is close to the first cavity, and can be used for connecting the main body with the outlet of the rock debris discharging pipe. For example, the main body fixing piece can be a main body fixing flange, and the front end of the main body is fixedly connected with the outlet of the rock debris discharging pipe through the main body fixing flange by a clamp.
The dust fall unit comprises a main water inlet pipe, a plurality of groups of atomizing water inlet pipes and a plurality of groups of atomizing spray heads. The main water inlet pipe is arranged above the main body and provided with a second central axis parallel to the first central axis. Each group of atomizing inlet tube all includes two atomizing inlet branch pipes of following second central axis symmetric distribution, and every atomizing inlet branch pipe all is configured with the extension section along the horizontal direction and along vertical direction and first central axis 45 ~ 65's the section of bending. The extension section is fixedly connected with the water inlet main pipe, and the bending section stretches into the main body from the first opening or the second opening. The end of the bending section is connected with an atomizing nozzle, and the atomizing nozzle can spray water mist to the central area of the main body so that the rock dust mist is moist and is in a descending trend at the outlet of the main body.
Here, the atomized water inlet branch pipe is arranged along the parallel direction of the vertical plane of the main body and is at a certain angle with the axis of the main body, so that the flow velocity of water in the water inlet main pipe can be increased, the contact of the water jet and the rock dust fog is facilitated, and a better dust settling effect is achieved, for example, the atomized water inlet branch pipe is arranged along the parallel direction of the vertical plane of the main body and is at 48 degrees, 51 degrees, 56 degrees, 62 degrees and the like with the axis of the main body. In addition, through experimental study, the flow rate of the gas drill cuttings is high, the gas drill cuttings are mainly distributed near the central axis of the main body, and the gas drill cuttings are not distributed in the middle area between the main body pipe wall and the first central axis, so that the position of the atomizing nozzle extending into the main body is ensured to spray water in the atomizing water inlet pipe mainly aiming at the first central axis.
Further, the diameter of the main water inlet pipe can be 108 mm-133 mm. The diameters of the multiple groups of atomizing water inlet branch pipes can be 50-70 mm, the lengths of the extension sections of the atomizing water inlet branch pipes can be 180-250 mm, and the lengths of the bending sections of the atomizing water inlet branch pipes can be 300-350 mm.
Still further, the number of the atomizing inlet pipes may be equal to or greater than three groups, and the number of the atomizing nozzles may be equal to or greater than three groups. The more the quantity that atomizing inlet tube and atomizer set up, the more obvious the dust fall effect of gas drilling dust fall device.
For example, the diameter of the main water inlet pipe can be 110mm, three groups of primary atomization water inlet branch pipes, secondary atomization water inlet branch pipes and tertiary atomization water inlet branch pipes with the pipe diameter of 50mm are respectively arranged on two sides of the main water inlet pipe, one end of each group of atomization water inlet pipes is connected with the main water inlet pipe through welding, and the other end of each group of atomization water inlet pipes is connected with internal threads of three groups of primary atomization spray heads, secondary atomization spray heads and tertiary atomization spray heads through 90-degree elbows. The arrangement mode of each atomization water inlet branch pipe can be as follows: the plane of the water inlet main pipe extends outwards for 180mm, is bent through a 90-degree elbow, continuously extends for 300mm along the parallel direction of the vertical plane of the main body and forms 45 degrees with the axis of the main body, and extends into the atomizing nozzle from the opening of the main body through the bending of a second 90-degree elbow.
The circulating unit comprises a collecting and circulating pool, a control valve, a water adding pump and a circulating water adding pipe. The collection circulation tank is arranged below the outlet of the main body and can hold and collect rock scraps after dust fall treatment. Clear water is stored in the collecting and circulating pool. One end of the circulating water adding pipe is connected with the water inlet main pipe, and the other end of the circulating water adding pipe extends into the bottom of the collecting circulating pool. The water adding pump and the control valve are both arranged at one end of the water inlet main pipe, which is close to the outlet of the rock debris discharging pipe, and the water adding pump can pump pool water in the collecting and circulating pool to the water inlet main pipe along the circulating water adding pipe, and the control valve can be communicated with the water inlet main pipe and the collecting and circulating pool so as to provide injection water for the atomizing water inlet pipe. For example, a water adding pump can be arranged at the front end of the control valve, and one end of the circulating water adding pipe is connected with the water adding pump; or the water adding pump can be arranged at the rear end of the control valve, and one end of the circulating water adding pipe is connected with the control valve; or, the two ends of the water adding pump are connected with control valves, and one end of the circulating water adding pipe is connected with the control valve in front of the water adding pump.
Further, the length of the collecting and circulating pool can be 20-30 m, the width can be 10-20 m, and the height can be 1.5-2 m; the flow rate of the water adding pump can be 40L/min-80L/min; the diameter of the circulating water adding pipe can be 25 mm-38 mm. For example, the collection circulation tank may be 20m long, 10m wide and 1.5m high; the flow rate of the water adding pump can be 40L/min; the diameter of the circulating water adding pipe can be 25mm.
The gas flow sensor is arranged in the first cavity and can monitor the flow of the gas with the flow rate of 80-130 m/min and transmit the gas to the control box.
For example, a gas flow sensor can be installed at the position 300-400 mm of the inlet of the main body, the gas flow sensor is connected with a control box on the upper surface of the main body, the control box is connected with the control valve and the water adding pump through circuit pipelines, and the gas flow sensor can control the start and stop of the control valve and the water adding pump through the control box after receiving signals. The start and stop of the pump and the valve are controlled through the gas flow sensor, so that the labor is saved, the influence of high-speed rock debris dust generated during gas drilling on the environment is effectively reduced during operation, and the clean production of gas drilling operation is ensured.
And the rock debris particle concentration sensor is arranged in the central area at the rear end of the third cavity and can monitor the rock debris particle concentration of the fluid and transmit the rock debris particle concentration to the control box. The center of the center area of the rock debris particle concentration sensor arranged at the rear end of the third cavity is positioned at the outer diameter of the third cavity which is parallel to the first central axis and is 0.1-0.2 times of the lower part of the first central axis, and the diameter of the third cavity is 0.2-0.4 times of the diameter of the third cavity. The purpose that the setting of detritus particle concentration sensor is aimed at real-time detection and falls the detritus particle concentration after the dirt processing to transmit this actual measurement result to the control box, so that the control box further adjusts the water supply intensity of water inlet director. For example, the outer diameter of the third cavity is 400mm, the center of the center area of the rock debris particle concentration sensor is located at the outer diameter of the third cavity (namely, located at 40mm below the first central axis) which is parallel to the first central axis and is 0.1 times lower than the first central axis, and the diameter of the center area is 0.2 times the outer diameter of the third cavity (namely, 80 mm).
One end of the control box is connected with the gas flow sensor, and the other end of the control box is connected with the control valve and the water adding pump. The control box can carry out linkage control on the control valve and the water adding pump after receiving the signal of the gas flow sensor so as to enable the control valve and the water adding pump to be in an open state or a closed state.
In addition, the control box can also carry out linkage control on the control valve and the water adding pump after calculating feedback control adjustment parameters according to the monitoring result of the rock debris particle concentration sensor so as to adjust the water supply intensity of the water inlet main pipe. The rock debris particle real-time concentration sensor transmits a real-time detection result to a control box, and the control box performs a detection according to the real-time detection result (C Real world ) And target result (C) Label (C) ) And (3) adjusting the water supply intensity of the water inlet main pipe. The control box can be further combined with the actual conditions of the air drilling (such as the flow velocity range, the rock debris granularity range, the rock debris initial concentration range and other characteristic ranges) to set a target result range [ ]I.e., the desired purge range) and gives the feedback control adjustment parameter range. For example, particle removal with a cuttings particle size greater than 0.08mm or more can be set by a PLC in the control box, and the water supply intensity can be adjusted by setting a target result range and controlling the pump flow by a concentration value signal fed back to the cuttings particle real-time concentration sensor.
Further, the algorithm for calculating the feedback control adjustment parameters by the control box according to the monitoring result of the rock debris particle concentration sensor is shown as the following formula:
P increase the number of ＝α(C Real world -C Label (C) )/C Label (C)
Wherein P is Increase the number of Percent, C, percent of increase in water supply intensity Real world Mg/m for the actual measured concentration of cuttings particles 3 ，C Label (C) For the concentration of cuttings particles after target treatment, mg/m 3 Alpha is a correction coefficient, and the value range is 0.3-0.6.
Example 2
In yet another exemplary embodiment of the present invention, an oil and gas exploration gas drilling dust suppression apparatus may include a main body, a main body fixture, a dust suppression unit, a circulation unit, a gas flow sensor, a cuttings particle concentration sensor, and a control box.
The main body is of a reducing cylindrical structure and is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis. The outer diameter of the first cavity is smaller than that of the third cavity, and the outer diameter of the second cavity is gradually increased from the outer diameter of the first cavity to that of the third cavity along the direction of 30-45 degrees relative to the first central axis. Four groups of first holes and second holes which are symmetrical along the first central axis are formed in two sides of the main body. Here, the outer diameter of the first cavity may be 241mm, and the first cavity length may be 1.0m; the outer diameter of the third cavity can be 420mm, and the length of the third cavity can be 1.8m; the outer diameter of the second cavity may gradually increase from the outer diameter of the first cavity to the outer diameter of the third cavity in a direction of 35 ° to the first central axis.
Further, the rear end of the third cavity of the main body is provided with an impact baffle along the direction of 35-60 degrees relative to the first central axis, the surface of the impact baffle is provided with a wear-resistant lining, and the wear-resistant lining is formed by spraying ceramic paint.
The main body fixing piece is arranged at one end of the main body, which is close to the first cavity, and can be used for connecting the main body with the outlet of the rock debris discharging pipe.
The dust fall unit comprises a main water inlet pipe, four groups of atomizing water inlet pipes and four groups of atomizing spray heads. The main water inlet pipe is arranged above the main body and provided with a second central axis parallel to the first central axis. The four groups of atomizing inlet pipes comprise two atomizing inlet branch pipes symmetrically distributed along the second central axis, and each atomizing inlet branch pipe is provided with an extension section along the horizontal direction and a bending section which forms 50-60 degrees with the first central axis along the vertical direction. The extension section is fixedly connected with the water inlet main pipe, and the bending section stretches into the main body from the first opening or the second opening. The end of the bending section is connected with an atomizing nozzle, and the atomizing nozzle can spray water mist to the central area of the main body so that the rock dust mist is moist and is in a descending trend at the outlet of the main body. The hydraulic calculation shows that the atomized water inlet branch pipe is arranged in the direction parallel to the vertical plane of the main body and is 50-60 degrees with the axis of the main body, so that the flow of water in the water inlet main pipe can be increased to the maximum, the maximum contact range between the water jet and the rock dust fog is facilitated, and the best dust settling effect is achieved.
For example, the diameter of the main water inlet pipe is 120mm, the diameter of the atomized water inlet branch pipe is 55mm, the length of the extension section is 210mm, the length of the bending section is 320mm, and the atomized water inlet branch pipe is arranged along the vertical plane parallel direction of the main body and is 55 degrees with the axis of the main body.
The circulating unit comprises a collecting and circulating pool, a control valve, a water adding pump and a circulating water adding pipe. The collection circulation tank is arranged below the outlet of the main body and can hold and collect rock scraps after dust fall treatment. Clear water is stored in the collecting and circulating pool. One end of the circulating water adding pipe is connected with the water inlet main pipe, and the other end of the circulating water adding pipe extends into the bottom of the collecting circulating pool. The water adding pump and the control valve are both arranged at one end of the water inlet main pipe, which is close to the outlet of the rock debris discharging pipe, and the water adding pump can pump pool water in the collecting and circulating pool to the water inlet main pipe along the circulating water adding pipe, and the control valve can be communicated with the water inlet main pipe and the collecting and circulating pool so as to provide injection water for the atomizing water inlet pipe.
Further, a filtrate collecting and circulating tank consisting of a multi-surface water filtering net can be arranged in the collecting and circulating tank. In other words, the collecting and circulating pool is divided into two parts, the front part is a rock debris collecting pool, the rear part is a filtrate collecting and circulating pool, three sides of the collecting and circulating pool are separated by a water filtering net, the water filtering net is woven into a grid by adopting stainless steel wires, and the grid is fixed on the wall of the collecting and circulating pool by screws. The length of the filtrate collecting and circulating pool is 1 m-2 m, the width is 1 m-2 m, the height is 1.5 m-2 m, and the diameter of the grid pore of the water filtering net is 0.05 cm-0.1 cm.
For example, the collection circulation tank may be 25m long, 15m wide and 1.8m high; the length of the filtrate collecting and circulating pool can be 1m, the width can be 1m, the height can be 1.5m, and the diameter of the grid pore of the water filtering net is 0.5cm; the flow rate of the water adding pump can be 55L/min; the diameter of the circulating water adding pipe can be 30mm.
The gas flow sensor is arranged in the first cavity and positioned at the position of 350mm of the inlet of the main body. The gas flow sensor can monitor the flow of the gas with the flow rate of 80-130 m/min and transmit the flow to the control box.
And the rock debris particle concentration sensor is arranged in the central area at the rear end of the third cavity and can monitor the rock debris particle concentration of the fluid and transmit the rock debris particle concentration to the control box. The center of the center area of the rock debris particle concentration sensor arranged at the rear end of the third cavity is positioned at the outer diameter of the third cavity which is parallel to the first central axis and is 0.1-0.2 times of the lower part of the first central axis, and the diameter of the third cavity is 0.2-0.4 times of the diameter of the third cavity. For example, the outer diameter of the third cavity is 420mm, the center of the center area of the rock debris particle concentration sensor is located at the outer diameter of the third cavity (i.e. at 63mm below the first central axis) which is parallel to the first central axis and is 0.15 times lower than the first central axis, and the diameter of the center area of the third cavity is 0.3 times lower than the outer diameter of the third cavity (i.e. 126 mm).
One end of the control box is connected with the gas flow sensor, and the other end of the control box is connected with the control valve and the water adding pump. The control box can carry out linkage control on the control valve and the water adding pump after receiving the signal of the gas flow sensor so as to enable the control valve and the water adding pump to be in an open state or a closed state. The control box can also calculate feedback control adjustment parameters according to the monitoring result of the rock debris particle concentration sensor, and then carry out linkage control on the control valve and the water adding pump so as to adjust the water supply intensity of the water inlet main pipe.
Further, the algorithm for calculating the feedback control adjustment parameters by the control box according to the monitoring result of the rock debris particle concentration sensor is shown as the following formula:
P increase the number of ＝α(C Real world -C Label (C) )/C Label (C)
Wherein P is Increase the number of Percent, C, percent of increase in water supply intensity Real world Mg/m for the actual measured concentration of cuttings particles 3 ，C Label (C) For the concentration of cuttings particles after target treatment, mg/m 3 Alpha is a correction coefficient, and the value range is 0.3-0.6.
Example 3
In yet another exemplary embodiment of the present invention, an oil and gas exploration gas drilling and dust suppression apparatus may include a main body, a main body fixture, a dust suppression unit, a circulation unit, a gas flow sensor, a cuttings particle concentration sensor, a control box, and a plurality of sets of support columns.
The main body is of a reducing cylindrical structure and is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis. The outer diameter of the first cavity is smaller than that of the third cavity, and the outer diameter of the second cavity is gradually increased from the outer diameter of the first cavity to that of the third cavity along the direction of 30-45 degrees relative to the first central axis. Five groups of first holes and second holes which are symmetrical along the first central axis are formed in two sides of the main body. Here, the outer diameter of the first cavity may be 243mm, and the first cavity length may be 1.1m; the outer diameter of the third cavity can be 450mm, and the length of the third cavity can be 2.1m; the outer diameter of the second cavity may gradually increase from the outer diameter of the first cavity to the outer diameter of the third cavity in a direction of 40 ° from the first central axis.
Further, the rear end of the third cavity of the main body is provided with an impact baffle along the direction of 35-60 degrees relative to the first central axis, the surface of the impact baffle is provided with a wear-resistant lining, and the wear-resistant lining is formed by spraying ceramic paint.
The main body fixing piece is arranged at one end of the main body, which is close to the first cavity, and can be used for connecting the main body with the outlet of the rock debris discharging pipe.
The dust fall unit comprises a main water inlet pipe, five groups of atomizing water inlet pipes and four groups of atomizing spray heads. The main water inlet pipe is arranged above the main body and provided with a second central axis parallel to the first central axis. The five groups of atomization water inlet pipes comprise two atomization water inlet branch pipes symmetrically distributed along the second central axis, and each atomization water inlet branch pipe is provided with an extension section along the horizontal direction and a bending section which forms 50-60 degrees with the first central axis along the vertical direction. The extension section is fixedly connected with the water inlet main pipe, and the bending section stretches into the main body from the first opening or the second opening. The end of the bending section is connected with an atomizing nozzle, and the atomizing nozzle can spray water mist to the central area of the main body so that the rock dust mist is moist and is in a descending trend at the outlet of the main body. The atomizing spray heads can be divided into two types, one type is positioned in the first cavity, and the other type is positioned in the second cavity and the third cavity, so that the comprehensive excellent effects of prolonging the service life and reducing the dust effect can be obtained.
For example, the diameter of the main water inlet pipe is 130mm, the diameter of the atomized water inlet branch pipe is 60mm, the length of the extension section is 240mm, the length of the bending section is 335mm, and the atomized water inlet branch pipe is arranged along the vertical plane parallel direction of the main body and is 58 degrees with the axis of the main body.
The circulating unit comprises a collecting and circulating pool, a control valve, a water adding pump and a circulating water adding pipe. The collection circulation tank is arranged below the outlet of the main body and can hold and collect rock scraps after dust fall treatment. Clear water is stored in the collecting and circulating pool. One end of the circulating water adding pipe is connected with the water inlet main pipe, and the other end of the circulating water adding pipe extends into the bottom of the collecting circulating pool. The water adding pump and the control valve are both arranged at one end of the water inlet main pipe, which is close to the outlet of the rock debris discharging pipe, and the water adding pump can pump pool water in the collecting and circulating pool to the water inlet main pipe along the circulating water adding pipe, and the control valve can be communicated with the water inlet main pipe and the collecting and circulating pool so as to provide injection water for the atomizing water inlet pipe.
Further, a filtrate collecting and circulating tank consisting of a multi-surface water filtering net can be arranged in the collecting and circulating tank.
For example, the collection circulation tank may be 30m long, 20m wide and 2m high; the length of the filtrate collecting and circulating pool can be 2m, the width can be 2m, the height can be 2m, and the diameter of the grid pore of the water filtering net is 0.1cm; the flow rate of the water adding pump can be 75L/min; the diameter of the circulating water adding pipe can be 35mm.
The gas flow sensor is arranged in the first cavity and is positioned at the 400mm position of the inlet of the main body. The gas flow sensor can monitor the flow of the gas with the flow rate of 80-130 m/min and transmit the flow to the control box.
And the rock debris particle concentration sensor is arranged in the central area at the rear end of the third cavity and can monitor the rock debris particle concentration of the fluid and transmit the rock debris particle concentration to the control box. The center of the center area of the rock debris particle concentration sensor arranged at the rear end of the third cavity is positioned at the outer diameter of the third cavity which is parallel to the first central axis and is 0.1-0.2 times of the lower part of the first central axis, and the diameter of the third cavity is 0.2-0.4 times of the diameter of the third cavity. For example, the outer diameter of the third cavity is 450mm, the center of the center area of the rock debris particle concentration sensor is located at the outer diameter of the third cavity (i.e. located at 90mm below the first central axis) which is parallel to the first central axis and located at 0.2 times below the first central axis, and the diameter of the third cavity is 0.4 times the outer diameter of the third cavity (i.e. 180 mm).
One end of the control box is connected with the gas flow sensor, and the other end of the control box is connected with the control valve and the water adding pump. The control box can carry out linkage control on the control valve and the water adding pump after receiving the signal of the gas flow sensor so as to enable the control valve and the water adding pump to be in an open state or a closed state. The control box can also calculate feedback control adjustment parameters according to the monitoring result of the rock debris particle concentration sensor, and then carry out linkage control on the control valve and the water adding pump so as to adjust the water supply intensity of the water inlet main pipe.
Further, the algorithm for calculating the feedback control adjustment parameters by the control box according to the monitoring result of the rock debris particle concentration sensor is shown as the following formula:
P increase the number of ＝α(C Real world -C Label (C) )/C Label (C)
Wherein P is Increase the number of Percent, C, percent of increase in water supply intensity Real world Mg/m for the actual measured concentration of cuttings particles 3 ，C Label (C) For the concentration of cuttings particles after target treatment, mg/m 3 Alpha is a correction coefficient, and the value range is 0.3-0.6.
In addition, the gas drilling dust device further comprises a plurality of groups of supporting upright posts, the plurality of groups of supporting upright posts are arranged below the main body at intervals from left to right, each group of supporting upright posts comprises two circular tubes, and the outer diameters of the circular tubes are 140-110 mm. The number of the support posts may be equal to or greater than two groups. For example, 1 group of support posts can be installed at 0.8m and 1.5m of the main body respectively, and the support posts adopt 4 inch galvanized pipes to maintain the stability of the main body. Wherein, the external diameter of the 4 inch galvanized pipe is 114mm, and the internal diameter is 10mm.
After entering the main body through the sleeve, the gas drill cuttings enter the main body, the gas flow sensor is triggered by the airflow with a certain flow velocity, after the signal is transmitted to the control box, the control box transmits the signal to the control valve and the water adding pump, the pump and the valve are started, the water in the water filtering tank is pumped out by the water adding pump to enter the water inlet main pipe through the opened control valve, and then the water mist is sprayed out through the five-stage atomization water inlet branch pipes and the atomization spray heads, the formed water mist is condensed in the cuttings dust mist, the speed and weight increasing effect is achieved, and the cuttings after atomization sink from the outlet to the cuttings collecting tank through gravity.
For a better understanding of the above-described exemplary embodiments of the present invention, reference is made to the following description, taken in conjunction with the accompanying drawings and specific examples.
Example 1
FIG. 1 shows a schematic diagram of the front view of a gas and oil exploration gas drilling dust suppression device of the present invention. FIG. 2 shows a schematic top view of a gas and oil exploration gas drilling dust suppression device of the present invention.
As shown in fig. 1 and 2, an oil and gas exploration gas drilling dust settling device may include a magnetic pump 1, a circulating water adding pipe 2, an electromagnetic valve 3, a water inlet main pipe 4, a primary atomization water inlet branch pipe 5, a secondary atomization water inlet branch pipe 6, a tertiary atomization water inlet branch pipe 7, a main body fixing flange 8, a gas flow sensor 9, a primary atomization spray nozzle 10, a secondary atomization spray nozzle 11, a tertiary atomization spray nozzle 12, a wear-resistant lining 13, a supporting upright post 14, a water filtering screen 15, a collecting and circulating pool 16, a control box 17, a main body 18 and a rock debris particle concentration sensor 19.
Wherein the main body 18 is formed by welding a section of a 304L stainless steel cylinder with a diameter of 400mm and a section of a 244mm, and the main body 18 is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis. That is, the first cavity outer diameter of the body 18 is 244mm, the third cavity outer diameter is 400mm, and the second cavity outer diameter gradually increases from 244mm to 400mm in a direction 30 ° from the first central axis. The rear end of the third cavity of the main body 18 is provided with an impact baffle along a direction which is 35 degrees with the first central axis, the surface of the impact baffle is provided with a wear-resistant lining 13, and the wear-resistant lining 13 is formed by spraying ceramic paint.
The main body 18 is connected with the cuttings-discharging casing by means of the main body fixing flange 8. The front end of the first cavity of the main body 18 is fixedly connected with the outlet of the rock debris discharging pipe through a main body fixing flange 8 through a clamp.
A water inlet main pipe 4 is arranged above the main body 18, and the diameter of the water inlet main pipe 4 is 110mm. One end of the water inlet main pipe 4, which is close to the outlet of the rock debris discharging pipe, is sequentially provided with a magnetic pump 1 and an electromagnetic valve 3, and two sides of the other end of the water inlet main pipe 4 are sequentially provided with a primary atomization water inlet branch pipe 5, a secondary atomization water inlet branch pipe 6 and a tertiary atomization water inlet branch pipe 7 at intervals. One end of a magnetic pump 1 with the flow of 60L/min is connected with a water inlet main pipe 4 through a clamp, and the other end is connected with a stainless steel circulating water adding pipe 2 with the pipe diameter of 30 mm. The electromagnetic valve 3 is arranged on one side of the water inlet main pipe 4, which is close to the magnetic pump 1, through internal threads. One ends of the primary atomization water inlet branch pipe 5, the secondary atomization water inlet branch pipe 6 and the tertiary atomization water inlet branch pipe 7 are connected with the water inlet main pipe 4 through welding, and the other ends are respectively connected with internal threads of three groups of primary atomization spray heads 10, secondary atomization spray heads 11 and tertiary atomization spray heads 12 through 90-degree elbows. The arrangement modes of the primary atomization water inlet branch pipe 5, the secondary atomization water inlet branch pipe 6 and the tertiary atomization water inlet branch pipe 7 are as follows: and the water inlet main pipe 4 extends out of 200mm, is bent through one 90-degree elbow, continuously extends for 300mm along the vertical plane parallel direction of the main body 18 and forms 50 degrees with the axis of the main body, and extends into a corresponding atomizing nozzle from an opening of the main body 18 through the second 90-degree elbow.
A collecting and circulating tank 16 is arranged below the outlet of the main body 18, and the collecting and circulating tank 16 is 20m long, 10m wide and 1.5m high. The collecting and circulating pool 16 is divided into two parts, wherein the front end is a rock debris collecting area, the rear end is a water filtering area, and the length of the water filtering area is 1m, the width of the water filtering area is 1m, and the height of the water filtering area is 1.5m. Three sides of the water filtering area are separated by a water filtering net partition 15, the water filtering net partition 15 is woven into a grid with a pore diameter of 0.05cm by adopting stainless steel wires, and the grid is fixed on the pool wall of the collecting and circulating pool 16 by screws. The other end of the circulating water adding pipe 2 extends into the bottom of the water filtering pool.
The gas flow sensor 9 is arranged at the 300mm position of the inlet of the main body 18, and the gas flow sensor 9 is connected with the control box 17 on the upper surface of the main body 18. The control box 17 is connected with the electromagnetic valve 3 and the magnetic pump 1 through circuit pipelines, and the start and stop of the electromagnetic valve 3 and the magnetic pump 1 can be controlled through the control box 17 after the gas flow sensor 9 receives signals.
A debris particle concentration sensor 19 for the fluid is provided at a central region of the rear end of the third cavity of the main body 18 (e.g., a cross section centered on and 0.1 times the outer diameter of the third cavity, 0.2 times the outer diameter of the third cavity, parallel to and below the first central axis). The rock debris particle concentration sensor 19 transmits the real-time detection result to the control box 17, and the control box 17 adjusts the water supply intensity of the water inlet main pipe 4 according to the difference between the real-time detection result and the target result.
1 pair of support columns 14 are respectively arranged at 0.8m and 1.5m of the main body 18, and the support columns 14 are made of 4 inch galvanized pipes, so that the stability of the main body 18 can be maintained. The outer diameter of the 4 inch galvanized pipe is 114mm, and the inner diameter is 10mm.
In summary, the beneficial effects of the present invention may include at least one of the following:
(1) According to the invention, through optimizing parameters such as a main body expansion structure, an angle of inserting an atomization water inlet branch pipe into a main body and the like, the concentration of rock debris dust at an outlet is obviously reduced, the comprehensive dust removal efficiency reaches more than 99%, the influence of high-speed rock debris dust generated during gas drilling on the environment is effectively reduced during operation, and the clean production of gas drilling operation is ensured;
(2) The invention controls the start and stop of the pump and the valve through the gas flow sensor, saves labor, and can adapt to the production process of the drilling site, follow the drilling process in real time and control the start and stop of the gas dust settling device;
(3) The circulating unit provided by the invention can realize the recycling of water, is ecological and environment-friendly, has economic benefits, and can control the water inflow of the water inlet main pipe in real time according to the signals transmitted by the rock debris particle concentration sensor so as to adapt to different gas drilling working conditions, thereby being beneficial to saving electric energy and water consumption.
Although the present invention has been described above with reference to the exemplary embodiments and the accompanying drawings, it should be apparent to those of ordinary skill in the art that various modifications can be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (10)
1. The gas drilling dust device for oil and gas exploration is characterized by comprising a main body, a main body fixing piece, a dust falling unit, a circulating unit, a gas flow sensor, a rock debris particle concentration sensor and a control box, wherein,
the main body is of a variable-diameter cylindrical structure and is provided with a first cavity, a second cavity and a third cavity which are sequentially connected from left to right along a first central axis, the outer diameter of the first cavity is smaller than that of the third cavity, the outer diameter of the second cavity is gradually increased from the outer diameter of the first cavity to the outer diameter of the third cavity along the direction of 30-45 degrees with the first central axis, and a plurality of groups of first open holes and second open holes which are symmetrical along the first central axis are formed in two sides of the main body;
the main body fixing piece is arranged at one end of the main body, which is close to the first cavity, and can connect the main body with the outlet of the rock debris discharging pipe;
the dust settling unit comprises a main water inlet pipe, a plurality of groups of atomizing water inlet pipes and a plurality of groups of atomizing spray heads, wherein the main water inlet pipe is arranged above the main body and is provided with a second central axis parallel to the first central axis, each group of atomizing water inlet pipes comprises two atomizing water inlet branch pipes symmetrically distributed along the second central axis, each atomizing water inlet branch pipe is provided with an extending section along the horizontal direction and a bending section which is 45-65 degrees with the first central axis along the vertical direction, the extending section is fixedly connected with the main water inlet pipe, the bending section extends into the main body from a first opening or a second opening, the tail end of the bending section is connected with the atomizing spray heads, and the atomizing spray heads can spray water mist to the central area of the main body so as to moisten the rock dust mist and form a descending trend at the outlet of the main body;
The circulating unit comprises a collecting and circulating pool, a control valve, a water adding pump and a circulating water adding pipe, wherein the collecting and circulating pool is arranged below the outlet of the main body and can accommodate and collect rock scraps after dust fall treatment, clear water is stored in the collecting and circulating pool, one end of the circulating water adding pipe is connected with a water inlet main pipe, the other end of the circulating water adding pipe stretches into the pool bottom of the collecting and circulating pool, the water adding pump and the control valve are both arranged at one end of the water inlet main pipe, which is close to the outlet of the rock scraps discharging pipe, the water adding pump can pump pool water in the collecting and circulating pool to a water inlet main pipe along the circulating water adding pipe, and the control valve can be communicated with the water inlet main pipe and the collecting and circulating pool so as to provide injection water for the atomizing water inlet pipe;
the gas flow sensor is arranged in the first cavity and can monitor the flow of the gas with the flow rate of 80-130 m/min and transmit the flow to the control box;
the rock debris particle concentration sensor is arranged in the central area at the rear end of the third cavity and can monitor the rock debris particle concentration of the fluid and transmit the rock debris particle concentration to the control box;
one end of the control box is connected with the gas flow sensor, the other end of the control box is connected with the control valve and the water adding pump, the control box can carry out linkage control on the control valve and the water adding pump after receiving signals of the gas flow sensor so that the control valve and the water adding pump are in an open state or a closed state, and the control box can carry out linkage control on the control valve and the water adding pump after calculating feedback control adjustment parameters according to monitoring results of the rock debris particle concentration sensor so as to adjust water supply intensity of a water inlet main pipe.
2. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the diameter of the main water inlet pipe is 108-133 mm, the diameters of the plurality of groups of atomization water inlet branch pipes are 50-70 mm, the length of the extension section is 180-250 mm, and the length of the bending section is 300-350 mm.
3. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the outer diameter of the first cavity is 240-250 mm, the length of the first cavity is 0.8-1.2 m, the outer diameter of the third cavity is 400-500 mm, the length of the third cavity is 1.5-2.4 m, the flow rate of the water adding pump is 40-80L/min, and the diameter of the circulating water adding pipe is 25-38 mm.
4. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the length of the collecting and circulating pool is 20-30 m, the width is 10-20 m, and the height is 1.5-2 m.
5. The oil and gas exploration gas drilling dust settling device according to claim 4, wherein the collecting and circulating tank is provided with a filtrate collecting and circulating tank consisting of a multi-surface water filtering net, the length of the filtrate collecting and circulating tank is 1 m-2 m, the width of the filtrate collecting and circulating tank is 1 m-2 m, the height of the filtrate collecting and circulating tank is 1.5 m-2 m, and the mesh pore diameter of the water filtering net is 0.05 cm-0.1 cm.
6. The oil and gas exploration gas drilling dust suppression device of claim 1, wherein the bending section is disposed at 50 ° to 60 ° to the first central axis in the vertical direction.
7. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the center of the center area of the rock debris particle concentration sensor arranged at the rear end of the third cavity is located at the outer diameter of the third cavity which is parallel to the first central axis and is located 0.1-0.2 times below the first central axis, and the diameter of the third cavity is 0.2-0.4 times.
8. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the algorithm for calculating the feedback control adjustment parameters according to the monitoring result of the rock debris particle concentration sensor by the control box is as follows:
P increase the number of ＝α(C Real world -C Label (C) )/C Label (C)
Wherein P is Increase the number of Percent, C, percent of increase in water supply intensity Real world Mg/m for the actual measured concentration of cuttings particles 3 ，C Label (C) For the concentration of cuttings particles after target treatment, mg/m 3 Alpha is a correction coefficient, and the value range is 0.3-0.6.
9. The oil and gas exploration gas drilling dust device according to claim 1, wherein the gas drilling dust device comprises a plurality of groups of support columns, the plurality of groups of support columns are arranged below the main body at intervals from left to right, each group of support columns comprises two circular tubes, and the outer diameter of each circular tube is 140-110 mm.
10. The oil and gas exploration gas drilling dust settling device according to claim 1, wherein the rear end of the third cavity is provided with an impact baffle plate along the direction of 35-60 degrees relative to the first central axis, the surface of the impact baffle plate is provided with a wear-resistant lining, and the wear-resistant lining is formed by spraying ceramic paint.
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| CN201635683U (en) * | 2010-03-31 | 2010-11-17 | 中国石油集团川庆钻探工程有限公司 | Gas drilling dust falling device |
| CN102787817A (en) * | 2012-09-08 | 2012-11-21 | 东北石油大学 | Comprehensive simulation experimental device of drilling circulation system |
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| US11077390B2 (en) * | 2015-07-31 | 2021-08-03 | Iron Horse Tools, Inc. | Separating drilling cuttings and gas using a liquid seal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201635683U (en) * | 2010-03-31 | 2010-11-17 | 中国石油集团川庆钻探工程有限公司 | Gas drilling dust falling device |
| CN102787817A (en) * | 2012-09-08 | 2012-11-21 | 东北石油大学 | Comprehensive simulation experimental device of drilling circulation system |
Non-Patent Citations (1)
| Title |
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| 气体钻井岩屑分离系统设计;温杰;罗整;吴琦;蒋杰;洪家树;陈国柱;黄杰;;钻采工艺(第05期);全文 * |
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